Merge pull request #1549 from hvitved/csharp/cfg/loop-unrolling

C#: Loop unrolling for `foreach` statements
2025-12-17 01:03:14 +01:00 · 2019-09-12 10:24:26 +01:00
parent 10076a6b2b 41cd13a637
commit e330d5a6c6
34 changed files with 2620 additions and 766 deletions
--- a/change-notes/1.23/analysis-csharp.md
+++ b/change-notes/1.23/analysis-csharp.md
@@ -36,5 +36,6 @@ The following changes in version 1.23 affect C# analysis in all applications.
  picture of the partial flow paths from a given source. The feature is
  disabled by default and can be enabled for individual configurations by
  overriding `int explorationLimit()`.
+* `foreach` statements where the body is guaranteed to be executed at least once, such as `foreach (var x in new string[]{ "a", "b", "c" }) { ... }`, are now recognized by all analyses based on the control flow graph (such as SSA, data flow and taint tracking).

 ## Changes to autobuilder
--- a/csharp/ql/src/semmle/code/csharp/Assignable.qll
+++ b/csharp/ql/src/semmle/code/csharp/Assignable.qll
@@ -567,6 +567,7 @@ module AssignableDefinitions {
   * entry point of `p`'s callable to basic block `bb` without passing through
   * any assignments to `p`.
   */
+  pragma[nomagic]
  private predicate parameterReachesWithoutDef(Parameter p, ControlFlow::BasicBlock bb) {
    forall(AssignableDefinition def | basicBlockRefParamDef(bb, p, def) |
      isUncertainRefCall(def.getTargetAccess())
--- a/csharp/ql/src/semmle/code/csharp/Implements.qll
+++ b/csharp/ql/src/semmle/code/csharp/Implements.qll
@@ -65,6 +65,7 @@ predicate implements(Virtualizable m1, Virtualizable m2, ValueOrRefType t) {
 * `I.M()` is compatible with `A.M()` for types `A` and `B`, but not
 * for type `C`, because `C.M()` conflicts.
 */
+pragma[nomagic]
 private Virtualizable getAnImplementedInterfaceMemberForSubType(Virtualizable m, ValueOrRefType t) {
  result = getACompatibleInterfaceMember(m) and
  t = m.getDeclaringType()
@@ -86,6 +87,7 @@ private predicate hasMemberCompatibleWithInterfaceMember(ValueOrRefType t, Virtu
 * signature, and where `m` can potentially be accessed when
 * the interface member is accessed.
 */
+pragma[nomagic]
 private Virtualizable getACompatibleInterfaceMember(Virtualizable m) {
  result = getACompatibleInterfaceMemberAux(m) and
  (
@@ -97,12 +99,14 @@ private Virtualizable getACompatibleInterfaceMember(Virtualizable m) {
  )
 }

+pragma[nomagic]
 private Virtualizable getACompatibleExplicitInterfaceMember(Virtualizable m, ValueOrRefType declType) {
  result = getACompatibleInterfaceMemberAux(m) and
  declType = m.getDeclaringType() and
  m.implementsExplicitInterface()
 }

+pragma[nomagic]
 private Virtualizable getACompatibleInterfaceMemberAux(Virtualizable m) {
  result = getACompatibleInterfaceAccessor(m) or
  result = getACompatibleInterfaceIndexer(m) or
--- a/csharp/ql/src/semmle/code/csharp/controlflow/ControlFlowElement.qll
+++ b/csharp/ql/src/semmle/code/csharp/controlflow/ControlFlowElement.qll
@@ -32,19 +32,19 @@ class ControlFlowElement extends ExprOrStmtParent, @control_flow_element {
   * several `ControlFlow::Node`s, for example to represent the continuation
   * flow in a `try/catch/finally` construction.
   */
-  Node getAControlFlowNode() { result.getElement() = this }
+  Nodes::ElementNode getAControlFlowNode() { result.getElement() = this }

  /**
   * Gets a first control flow node executed within this element.
   */
-  Node getAControlFlowEntryNode() {
+  Nodes::ElementNode getAControlFlowEntryNode() {
    result = Internal::getAControlFlowEntryNode(this).getAControlFlowNode()
  }

  /**
   * Gets a potential last control flow node executed within this element.
   */
-  Node getAControlFlowExitNode() {
+  Nodes::ElementNode getAControlFlowExitNode() {
    result = Internal::getAControlFlowExitNode(this).getAControlFlowNode()
  }

--- a/csharp/ql/src/semmle/code/csharp/controlflow/ControlFlowGraph.qll
+++ b/csharp/ql/src/semmle/code/csharp/controlflow/ControlFlowGraph.qll
@@ -317,6 +317,8 @@ module ControlFlow {
    class ExceptionHandlerSplit = ExceptionHandlerSplitting::ExceptionHandlerSplitImpl;

    class BooleanSplit = BooleanSplitting::BooleanSplitImpl;
+
+    class LoopUnrollingSplit = LoopUnrollingSplitting::LoopUnrollingSplitImpl;
  }

  class BasicBlock = BBs::BasicBlock;
--- a/csharp/ql/src/semmle/code/csharp/controlflow/Guards.qll
+++ b/csharp/ql/src/semmle/code/csharp/controlflow/Guards.qll
@@ -12,6 +12,9 @@ private import semmle.code.csharp.commons.StructuralComparison::Internal
 private import semmle.code.csharp.controlflow.BasicBlocks
 private import semmle.code.csharp.controlflow.internal.Completion
 private import semmle.code.csharp.frameworks.System
+private import semmle.code.csharp.frameworks.system.Linq
+private import semmle.code.csharp.frameworks.system.Collections
+private import semmle.code.csharp.frameworks.system.collections.Generic

 /** An expression whose value may control the execution of another element. */
 class Guard extends Expr {
@@ -53,6 +56,28 @@ abstract class AbstractValue extends TAbstractValue {
   */
  abstract predicate isSingleton();

+  /**
+   * Holds if this value describes a referential property. For example, emptiness
+   * of a collection is a referential property.
+   *
+   * Such values only propagate through adjacent reads, for example, in
+   *
+   * ```
+   * int M()
+   * {
+   *     var x = new string[]{ "a", "b", "c" }.ToList();
+   *     x.Clear();
+   *     return x.Count;
+   * }
+   * ```
+   *
+   * the non-emptiness of `new string[]{ "a", "b", "c" }.ToList()` only propagates
+   * to the read of `x` in `x.Clear()` and not in `x.Count`.
+   *
+   * Aliasing is not taken into account in the analyses.
+   */
+  predicate isReferentialProperty() { none() }
+
  /** Gets a textual representation of this abstract value. */
  abstract string toString();
 }
@@ -112,6 +137,9 @@ module AbstractValues {
    /** Holds if this value represents `null`. */
    predicate isNull() { this = TNullValue(true) }

+    /** Holds if this value represents non-`null`. */
+    predicate isNonNull() { this = TNullValue(false) }
+
    override predicate branch(ControlFlowElement cfe, ConditionalSuccessor s, Expr e) {
      this = TNullValue(s.(NullnessSuccessor).getValue()) and
      exists(NullnessCompletion c | s.matchesCompletion(c) |
@@ -121,7 +149,7 @@ module AbstractValues {
    }

    override NullValue getDualValue() {
-      if this.isNull() then not result.isNull() else result.isNull()
+      if this.isNull() then result.isNonNull() else result.isNull()
    }

    override DereferenceableExpr getAnExpr() {
@@ -174,6 +202,9 @@ module AbstractValues {
    /** Holds if this value represents an empty collection. */
    predicate isEmpty() { this = TEmptyCollectionValue(true) }

+    /** Holds if this value represents a non-empty collection. */
+    predicate isNonEmpty() { this = TEmptyCollectionValue(false) }
+
    override predicate branch(ControlFlowElement cfe, ConditionalSuccessor s, Expr e) {
      this = TEmptyCollectionValue(s.(EmptinessSuccessor).getValue()) and
      exists(EmptinessCompletion c, ForeachStmt fs | s.matchesCompletion(c) |
@@ -184,13 +215,21 @@ module AbstractValues {
    }

    override EmptyCollectionValue getDualValue() {
-      if this.isEmpty() then not result.isEmpty() else result.isEmpty()
+      if this.isEmpty() then result.isNonEmpty() else result.isEmpty()
    }

-    override Expr getAnExpr() { none() }
+    override Expr getAnExpr() {
+      this.isEmpty() and
+      emptyValue(result)
+      or
+      this.isNonEmpty() and
+      nonEmptyValue(result)
+    }

    override predicate isSingleton() { none() }

+    override predicate isReferentialProperty() { any() }
+
    override string toString() { if this.isEmpty() then result = "empty" else result = "non-empty" }
  }
 }
@@ -254,7 +293,7 @@ class DereferenceableExpr extends Expr {
      exists(ComparisonTest ct, ComparisonKind ck, Expr e | ct.getExpr() = result |
        ct.getAnArgument() = this and
        ct.getAnArgument() = e and
-        e = any(NullValue nv | not nv.isNull()).getAnExpr() and
+        e = any(NullValue nv | nv.isNonNull()).getAnExpr() and
        ck = ct.getComparisonKind() and
        this != e and
        isNull = false and
@@ -363,7 +402,7 @@ class DereferenceableExpr extends Expr {
        v.isNull() and
        isNull = true
      ) else (
-        not v.isNull() and
+        v.isNonNull() and
        isNull = false
      )
    )
@@ -388,6 +427,113 @@ class DereferenceableExpr extends Expr {
  }
 }

+/**
+ * An expression that evaluates to a collection. That is, an expression whose
+ * (transitive, reflexive) base type is `IEnumerable`.
+ */
+class CollectionExpr extends Expr {
+  CollectionExpr() {
+    this.getType().(ValueOrRefType).getABaseType*() instanceof SystemCollectionsIEnumerableInterface
+  }
+
+  /**
+   * Gets an expression that computes the size of this collection. `lowerBound`
+   * indicates whether the expression only computes a lower bound.
+   */
+  private Expr getASizeExpr(boolean lowerBound) {
+    lowerBound = false and
+    result = any(PropertyRead pr |
+        this = pr.getQualifier() and
+        pr.getTarget() = any(SystemArrayClass x).getLengthProperty()
+      )
+    or
+    lowerBound = false and
+    result = any(PropertyRead pr |
+        this = pr.getQualifier() and
+        pr
+            .getTarget()
+            .overridesOrImplementsOrEquals(any(Property p |
+                p.getSourceDeclaration() = any(SystemCollectionsGenericICollectionInterface x)
+                      .getCountProperty()
+              ))
+      )
+    or
+    result = any(MethodCall mc |
+        mc.getTarget().getSourceDeclaration() = any(SystemLinq::SystemLinqEnumerableClass x)
+              .getACountMethod() and
+        this = mc.getArgument(0) and
+        if mc.getNumberOfArguments() = 1 then lowerBound = false else lowerBound = true
+      )
+  }
+
+  private Expr getABooleanEmptinessCheck(BooleanValue v, boolean isEmpty) {
+    exists(boolean branch | branch = v.getValue() |
+      result = any(ComparisonTest ct |
+          exists(boolean lowerBound |
+            ct.getAnArgument() = this.getASizeExpr(lowerBound) and
+            if isEmpty = true then lowerBound = false else any()
+          |
+            // x.Length == 0
+            ct.getComparisonKind().isEquality() and
+            ct.getAnArgument().getValue().toInt() = 0 and
+            branch = isEmpty
+            or
+            // x.Length == k, k > 0
+            ct.getComparisonKind().isEquality() and
+            ct.getAnArgument().getValue().toInt() > 0 and
+            branch = true and
+            isEmpty = false
+            or
+            // x.Length != 0
+            ct.getComparisonKind().isInequality() and
+            ct.getAnArgument().getValue().toInt() = 0 and
+            branch = isEmpty.booleanNot()
+            or
+            // x.Length != k, k != 0
+            ct.getComparisonKind().isInequality() and
+            ct.getAnArgument().getValue().toInt() != 0 and
+            branch = false and
+            isEmpty = false
+            or
+            // x.Length > k, k >= 0
+            ct.getComparisonKind().isLessThan() and
+            ct.getFirstArgument().getValue().toInt() >= 0 and
+            branch = true and
+            isEmpty = false
+            or
+            // x.Length >= k, k > 0
+            ct.getComparisonKind().isLessThanEquals() and
+            ct.getFirstArgument().getValue().toInt() > 0 and
+            branch = true and
+            isEmpty = false
+          )
+        ).getExpr()
+      or
+      result = any(MethodCall mc |
+          mc.getTarget().getSourceDeclaration() = any(SystemLinq::SystemLinqEnumerableClass x)
+                .getAnAnyMethod() and
+          this = mc.getArgument(0) and
+          branch = isEmpty.booleanNot() and
+          if branch = false then mc.getNumberOfArguments() = 1 else any()
+        )
+    )
+  }
+
+  /**
+   * Gets an expression that tests whether this expression is empty.
+   *
+   * If the returned expression has abstract value `v`, then this expression is
+   * guaranteed to be empty if `isEmpty` is true, and non-empty if `isEmpty` is
+   * false.
+   *
+   * For example, if the expression `x.Length != 0` evaluates to `true` then the
+   * expression `x` is guaranteed to be non-empty.
+   */
+  Expr getAnEmptinessCheck(AbstractValue v, boolean isEmpty) {
+    result = this.getABooleanEmptinessCheck(v, isEmpty)
+  }
+}
+
 /** An expression that accesses/calls a declaration. */
 class AccessOrCallExpr extends Expr {
  private Declaration target;
@@ -630,12 +776,12 @@ class GuardedDataFlowNode extends DataFlow::ExprNode {

 /** An expression guarded by a `null` check. */
 class NullGuardedExpr extends GuardedExpr {
-  NullGuardedExpr() { this.mustHaveValue(any(NullValue v | not v.isNull())) }
+  NullGuardedExpr() { this.mustHaveValue(any(NullValue v | v.isNonNull())) }
 }

 /** A data flow node guarded by a `null` check. */
 class NullGuardedDataFlowNode extends GuardedDataFlowNode {
-  NullGuardedDataFlowNode() { this.mustHaveValue(any(NullValue v | not v.isNull())) }
+  NullGuardedDataFlowNode() { this.mustHaveValue(any(NullValue v | v.isNonNull())) }
 }

 /** INTERNAL: Do not use. */
@@ -755,7 +901,7 @@ module Internal {
      bao.getAnOperand() = o and
      // The other operand must be provably non-null in order
      // for `only if` to hold
-      o = any(NullValue nv | not nv.isNull()).getAnExpr() and
+      o = any(NullValue nv | nv.isNonNull()).getAnExpr() and
      e != o
    )
  }
@@ -834,7 +980,7 @@ module Internal {
      v.(NullValue).isNull()
      or
      a.getAssertMethod() instanceof AssertNonNullMethod and
-      v = any(NullValue nv | not nv.isNull())
+      v.(NullValue).isNonNull()
    )
  }

@@ -871,7 +1017,7 @@ module Internal {
    }

    /** Holds if pre-basic-block `bb` only is reached when guard `g` has abstract value `v`. */
-    private predicate preControls(Guard g, PreBasicBlocks::PreBasicBlock bb, AbstractValue v) {
+    predicate preControls(Guard g, PreBasicBlocks::PreBasicBlock bb, AbstractValue v) {
      exists(AbstractValue v0, Guard g0 | preControlsDirect(g0, bb, v0) |
        preImpliesSteps(g0, v0, g, v)
      )
@@ -1257,25 +1403,39 @@ module Internal {
      nonNullValueImplied(def.getDefinition().getSource())
    }

+    private predicate emptyDef(PreSsa::Definition def) {
+      emptyValue(def.getDefinition().getSource())
+    }
+
+    private predicate nonEmptyDef(PreSsa::Definition def) {
+      nonEmptyValue(def.getDefinition().getSource())
+    }
+
    cached
    private module CachedWithCFG {
      private import semmle.code.csharp.Caching

      cached
      predicate isGuard(Expr e, AbstractValue val) {
-        Stages::ControlFlowStage::forceCachingInSameStage() and
-        e.getType() instanceof BoolType and
-        not e instanceof BoolLiteral and
-        not e instanceof SwitchCaseExpr and
-        not e instanceof PatternExpr and
-        val = TBooleanValue(_)
-        or
-        e instanceof DereferenceableExpr and
-        val = TNullValue(_)
-        or
-        val.branch(_, _, e)
-        or
-        asserts(_, e, val)
+        (
+          e.getType() instanceof BoolType and
+          not e instanceof BoolLiteral and
+          not e instanceof SwitchCaseExpr and
+          not e instanceof PatternExpr and
+          val = TBooleanValue(_)
+          or
+          e instanceof DereferenceableExpr and
+          val = TNullValue(_)
+          or
+          val.branch(_, _, e)
+          or
+          asserts(_, e, val)
+          or
+          e instanceof CollectionExpr and
+          val = TEmptyCollectionValue(_)
+        ) and
+        not e = any(ExprStmt es).getExpr() and
+        not e = any(LocalVariableDeclStmt s).getAVariableDeclExpr()
      }

      cached
@@ -1287,6 +1447,15 @@ module Internal {
        )
      }

+      private predicate firstReadSameVarUniquePredecesssor(
+        PreSsa::Definition def, AssignableRead read
+      ) {
+        PreSsa::firstReadSameVar(def, read) and
+        not exists(AssignableRead other | PreSsa::adjacentReadPairSameVar(other, read) |
+          other != read
+        )
+      }
+
      /**
       * Holds if the assumption that `g1` has abstract value `v1` implies that
       * `g2` has abstract value `v2`, using one step of reasoning. That is, the
@@ -1373,6 +1542,13 @@ module Internal {
          (g1 != g2 or v1 != v2)
        )
        or
+        exists(boolean isEmpty | g1 = g2.(CollectionExpr).getAnEmptinessCheck(v1, isEmpty) |
+          v2 = any(EmptyCollectionValue ecv |
+              if ecv.isEmpty() then isEmpty = true else isEmpty = false
+            ) and
+          g1 != g2
+        )
+        or
        g1 instanceof DereferenceableExpr and
        g1 = getNullEquivParent(g2) and
        v1 instanceof NullValue and
@@ -1380,7 +1556,7 @@ module Internal {
        or
        g1 instanceof DereferenceableExpr and
        g2 = getANullImplyingChild(g1) and
-        v1 = any(NullValue nv | not nv.isNull()) and
+        v1.(NullValue).isNonNull() and
        v2 = v1
        or
        g2 = g1.(AssignExpr).getRValue() and
@@ -1395,10 +1571,12 @@ module Internal {
        isGuard(g1, v1) and
        v2 = v1.(NullValue)
        or
-        exists(PreSsa::Definition def | def.getDefinition().getSource() = g2 |
+        exists(PreSsa::Definition def |
+          def.getDefinition().getSource() = g2 and
          g1 = def.getARead() and
          isGuard(g1, v1) and
-          v2 = v1
+          v2 = v1 and
+          if v1.isReferentialProperty() then firstReadSameVarUniquePredecesssor(def, g1) else any()
        )
        or
        exists(PreSsa::Definition def, AbstractValue v |
@@ -1449,6 +1627,63 @@ module Internal {
            forex(PreSsa::Definition u | u = def.getAnUltimateDefinition() | nonNullDef(u))
          ).getARead()
      }
+
+      private predicate adjacentReadPairSameVarUniquePredecessor(
+        AssignableRead read1, AssignableRead read2
+      ) {
+        PreSsa::adjacentReadPairSameVar(read1, read2) and
+        not exists(AssignableRead other |
+          PreSsa::adjacentReadPairSameVar(other, read2) and
+          other != read1 and
+          other != read2
+        )
+      }
+
+      cached
+      predicate emptyValue(Expr e) {
+        e.(ArrayCreation).getALengthArgument().getValue().toInt() = 0
+        or
+        e.(ArrayInitializer).hasNoElements()
+        or
+        exists(Expr mid | emptyValue(mid) |
+          mid = e.(AssignExpr).getRValue()
+          or
+          mid = e.(Cast).getExpr()
+        )
+        or
+        exists(PreSsa::Definition def | emptyDef(def) | firstReadSameVarUniquePredecesssor(def, e))
+        or
+        exists(MethodCall mc |
+          mc.getTarget().getAnUltimateImplementee().getSourceDeclaration() = any(SystemCollectionsGenericICollectionInterface c
+            ).getClearMethod() and
+          adjacentReadPairSameVarUniquePredecessor(mc.getQualifier(), e)
+        )
+      }
+
+      cached
+      predicate nonEmptyValue(Expr e) {
+        forex(Expr length | length = e.(ArrayCreation).getALengthArgument() |
+          length.getValue().toInt() != 0
+        )
+        or
+        e.(ArrayInitializer).getNumberOfElements() > 0
+        or
+        exists(Expr mid | nonEmptyValue(mid) |
+          mid = e.(AssignExpr).getRValue()
+          or
+          mid = e.(Cast).getExpr()
+        )
+        or
+        exists(PreSsa::Definition def | nonEmptyDef(def) |
+          firstReadSameVarUniquePredecesssor(def, e)
+        )
+        or
+        exists(MethodCall mc |
+          mc.getTarget().getAnUltimateImplementee().getSourceDeclaration() = any(SystemCollectionsGenericICollectionInterface c
+            ).getAddMethod() and
+          adjacentReadPairSameVarUniquePredecessor(mc.getQualifier(), e)
+        )
+      }
    }

    import CachedWithCFG
@@ -1515,14 +1750,29 @@ module Internal {
      exists(ConditionOnExprComparisonConfig c | c.same(sub, guarded))
    }

+    private predicate adjacentReadPairSameVarUniquePredecessor(
+      Ssa::Definition def, ControlFlow::Node cfn1, ControlFlow::Node cfn2
+    ) {
+      Ssa::Internal::adjacentReadPairSameVar(def, cfn1, cfn2) and
+      not exists(ControlFlow::Node other |
+        Ssa::Internal::adjacentReadPairSameVar(def, other, cfn2) and
+        other != cfn1 and
+        other != cfn2
+      )
+    }
+
    cached
    predicate isGuardedByExpr(
      AccessOrCallExpr guarded, Guard g, AccessOrCallExpr sub, AbstractValue v
    ) {
      isGuardedByExpr1(guarded, g, sub, v) and
      sub = getAChildExprStar(g) and
-      forall(Ssa::Definition def | def = sub.getAnSsaQualifier(_) |
-        def = guarded.getAnSsaQualifier(_)
+      forall(Ssa::Definition def, ControlFlow::Node subCfn | def = sub.getAnSsaQualifier(subCfn) |
+        exists(ControlFlow::Node defCfn | def = guarded.getAnSsaQualifier(defCfn) |
+          if v.isReferentialProperty()
+          then adjacentReadPairSameVarUniquePredecessor(def, subCfn, defCfn)
+          else any()
+        )
      )
    }

@@ -1550,7 +1800,20 @@ module Internal {
    ) {
      isGuardedByNode1(guarded, g, sub, v) and
      sub = getAChildExprStar(g) and
-      forall(Ssa::Definition def | def = sub.getAnSsaQualifier(_) | isGuardedByNode2(guarded, def))
+      forall(Ssa::Definition def, ControlFlow::Node subCfn | def = sub.getAnSsaQualifier(subCfn) |
+        isGuardedByNode2(guarded, def) and
+        if v.isReferentialProperty()
+        then adjacentReadPairSameVarUniquePredecessor(def, subCfn, guarded)
+        else any()
+      )
+    }
+
+    private predicate firstReadUniquePredecessor(Ssa::ExplicitDefinition def, ControlFlow::Node cfn) {
+      exists(def.getAFirstReadAtNode(cfn)) and
+      not exists(ControlFlow::Node other |
+        Ssa::Internal::adjacentReadPairSameVar(def, other, cfn) and
+        other != cfn
+      )
    }

    /**
@@ -1564,11 +1827,12 @@ module Internal {
    predicate impliesStep(Guard g1, AbstractValue v1, Guard g2, AbstractValue v2) {
      preImpliesStep(g1, v1, g2, v2)
      or
-      forex(ControlFlow::Node cfn | cfn = g1.getAControlFlowNode() |
+      forex(ControlFlow::Node cfn1 | cfn1 = g1.getAControlFlowNode() |
        exists(Ssa::ExplicitDefinition def | def.getADefinition().getSource() = g2 |
-          g1 = def.getAReadAtNode(cfn) and
+          g1 = def.getAReadAtNode(cfn1) and
          isGuard(g1, v1) and
-          v2 = v1
+          v2 = v1 and
+          if v1.isReferentialProperty() then firstReadUniquePredecessor(def, cfn1) else any()
        )
      )
    }
--- a/csharp/ql/src/semmle/code/csharp/controlflow/internal/Completion.qll
+++ b/csharp/ql/src/semmle/code/csharp/controlflow/internal/Completion.qll
@@ -54,6 +54,28 @@ private newtype TCompletion =
    exists(boolean b | inner = TBooleanCompletion(b) and outer = TBooleanCompletion(b.booleanNot()))
  }

+pragma[noinline]
+private predicate completionIsValidForStmt(Stmt s, Completion c) {
+  s instanceof BreakStmt and
+  c = TBreakCompletion()
+  or
+  s instanceof ContinueStmt and
+  c = TContinueCompletion()
+  or
+  s instanceof GotoStmt and
+  c = TGotoCompletion(s.(GotoStmt).getLabel())
+  or
+  s instanceof ReturnStmt and
+  c = TReturnCompletion()
+  or
+  s instanceof YieldBreakStmt and
+  // `yield break` behaves like a return statement
+  c = TReturnCompletion()
+  or
+  mustHaveEmptinessCompletion(s) and
+  c = TEmptinessCompletion(_)
+}
+
 /**
 * A completion of a statement or an expression.
 */
@@ -68,76 +90,59 @@ class Completion extends TCompletion {
   * otherwise it is a normal non-Boolean completion.
   */
  predicate isValidFor(ControlFlowElement cfe) {
-    if cfe instanceof NonReturningCall
-    then this = cfe.(NonReturningCall).getACompletion()
-    else (
-      this = TThrowCompletion(cfe.(TriedControlFlowElement).getAThrownException())
+    cfe instanceof NonReturningCall and
+    this = cfe.(NonReturningCall).getACompletion()
+    or
+    this = TThrowCompletion(cfe.(TriedControlFlowElement).getAThrownException())
+    or
+    cfe instanceof ThrowElement and
+    this = TThrowCompletion(cfe.(ThrowElement).getThrownExceptionType())
+    or
+    completionIsValidForStmt(cfe, this)
+    or
+    mustHaveBooleanCompletion(cfe) and
+    (
+      exists(boolean value | isBooleanConstant(cfe, value) | this = TBooleanCompletion(value))
      or
-      cfe instanceof ThrowElement and
-      this = TThrowCompletion(cfe.(ThrowElement).getThrownExceptionType())
-      or
-      cfe instanceof BreakStmt and
-      this = TBreakCompletion()
-      or
-      cfe instanceof ContinueStmt and
-      this = TContinueCompletion()
-      or
-      cfe instanceof GotoStmt and
-      this = TGotoCompletion(cfe.(GotoStmt).getLabel())
-      or
-      cfe instanceof ReturnStmt and
-      this = TReturnCompletion()
-      or
-      cfe instanceof YieldBreakStmt and
-      // `yield break` behaves like a return statement
-      this = TReturnCompletion()
-      or
-      mustHaveBooleanCompletion(cfe) and
-      (
-        exists(boolean value | isBooleanConstant(cfe, value) | this = TBooleanCompletion(value))
-        or
-        not isBooleanConstant(cfe, _) and
-        this = TBooleanCompletion(_)
-        or
-        // Corner case: In `if (x ?? y) { ... }`, `x` must have both a `true`
-        // completion, a `false` completion, and a `null` completion (but not a
-        // non-`null` completion)
-        mustHaveNullnessCompletion(cfe) and
-        this = TNullnessCompletion(true)
-      )
+      not isBooleanConstant(cfe, _) and
+      this = TBooleanCompletion(_)
      or
+      // Corner case: In `if (x ?? y) { ... }`, `x` must have both a `true`
+      // completion, a `false` completion, and a `null` completion (but not a
+      // non-`null` completion)
      mustHaveNullnessCompletion(cfe) and
-      not mustHaveBooleanCompletion(cfe) and
-      (
-        exists(boolean value | isNullnessConstant(cfe, value) | this = TNullnessCompletion(value))
-        or
-        not isNullnessConstant(cfe, _) and
-        this = TNullnessCompletion(_)
-      )
-      or
-      mustHaveMatchingCompletion(cfe) and
-      (
-        exists(boolean value | isMatchingConstant(cfe, value) | this = TMatchingCompletion(value))
-        or
-        not isMatchingConstant(cfe, _) and
-        this = TMatchingCompletion(_)
-      )
-      or
-      mustHaveEmptinessCompletion(cfe) and
-      this = TEmptinessCompletion(_)
-      or
-      not cfe instanceof ThrowElement and
-      not cfe instanceof BreakStmt and
-      not cfe instanceof ContinueStmt and
-      not cfe instanceof GotoStmt and
-      not cfe instanceof ReturnStmt and
-      not cfe instanceof YieldBreakStmt and
-      not mustHaveBooleanCompletion(cfe) and
-      not mustHaveNullnessCompletion(cfe) and
-      not mustHaveMatchingCompletion(cfe) and
-      not mustHaveEmptinessCompletion(cfe) and
-      this = TNormalCompletion()
+      this = TNullnessCompletion(true)
    )
+    or
+    mustHaveNullnessCompletion(cfe) and
+    not mustHaveBooleanCompletion(cfe) and
+    (
+      exists(boolean value | isNullnessConstant(cfe, value) | this = TNullnessCompletion(value))
+      or
+      not isNullnessConstant(cfe, _) and
+      this = TNullnessCompletion(_)
+    )
+    or
+    mustHaveMatchingCompletion(cfe) and
+    (
+      exists(boolean value | isMatchingConstant(cfe, value) | this = TMatchingCompletion(value))
+      or
+      not isMatchingConstant(cfe, _) and
+      this = TMatchingCompletion(_)
+    )
+    or
+    not cfe instanceof NonReturningCall and
+    not cfe instanceof ThrowElement and
+    not cfe instanceof BreakStmt and
+    not cfe instanceof ContinueStmt and
+    not cfe instanceof GotoStmt and
+    not cfe instanceof ReturnStmt and
+    not cfe instanceof YieldBreakStmt and
+    not mustHaveBooleanCompletion(cfe) and
+    not mustHaveNullnessCompletion(cfe) and
+    not mustHaveMatchingCompletion(cfe) and
+    not mustHaveEmptinessCompletion(cfe) and
+    this = TNormalCompletion()
  }

  /**
@@ -264,7 +269,10 @@ private predicate assemblyCompiledWithCoreLib(Assembly a, CoreLib core) {
 private class TriedControlFlowElement extends ControlFlowElement {
  TryStmt try;

-  TriedControlFlowElement() { this = try.getATriedElement() }
+  TriedControlFlowElement() {
+    this = try.getATriedElement() and
+    not this instanceof NonReturningCall
+  }

  /**
   * Gets an exception class that is potentially thrown by this element, if any.
@@ -372,7 +380,8 @@ private predicate invalidCastCandidate(CastExpr ce) {
 */
 private predicate mustHaveBooleanCompletion(Expr e) {
  inBooleanContext(e, _) and
-  not inBooleanContext(e.getAChildExpr(), true)
+  not inBooleanContext(e.getAChildExpr(), true) and
+  not e instanceof NonReturningCall
 }

 /**
@@ -442,7 +451,8 @@ private predicate inBooleanContext(Expr e, boolean isBooleanCompletionForParent)
 */
 private predicate mustHaveNullnessCompletion(Expr e) {
  inNullnessContext(e, _) and
-  not inNullnessContext(e.getAChildExpr(), true)
+  not inNullnessContext(e.getAChildExpr(), true) and
+  not e instanceof NonReturningCall
 }

 /**
--- a/csharp/ql/src/semmle/code/csharp/controlflow/internal/Splitting.qll
+++ b/csharp/ql/src/semmle/code/csharp/controlflow/internal/Splitting.qll
@@ -29,7 +29,8 @@ private module Cached {
    TInitializerSplitKind() or
    TFinallySplitKind() or
    TExceptionHandlerSplitKind() or
-    TBooleanSplitKind(BooleanSplitting::BooleanSplitSubKind kind) { kind.startsSplit(_) }
+    TBooleanSplitKind(BooleanSplitting::BooleanSplitSubKind kind) { kind.startsSplit(_) } or
+    TLoopUnrollingSplitKind(LoopUnrollingSplitting::UnrollableLoopStmt loop)

  cached
  newtype TSplit =
@@ -39,7 +40,8 @@ private module Cached {
    TBooleanSplit(BooleanSplitting::BooleanSplitSubKind kind, boolean branch) {
      kind.startsSplit(_) and
      (branch = true or branch = false)
-    }
+    } or
+    TLoopUnrollingSplit(LoopUnrollingSplitting::UnrollableLoopStmt loop)

  cached
  newtype TSplits =
@@ -1023,6 +1025,153 @@ module BooleanSplitting {
  }
 }

+module LoopUnrollingSplitting {
+  private import semmle.code.csharp.controlflow.Guards as Guards
+  private import PreBasicBlocks
+  private import PreSsa
+
+  /** Holds if `ce` is guarded by a (non-)empty check, as specified by `v`. */
+  private predicate emptinessGuarded(
+    Guards::Guard g, Guards::CollectionExpr ce, Guards::AbstractValues::EmptyCollectionValue v
+  ) {
+    exists(PreBasicBlock bb | Guards::Internal::preControls(g, bb, v) |
+      PreSsa::adjacentReadPairSameVar(g, ce) and
+      bb.getAnElement() = ce
+    )
+  }
+
+  /**
+   * A loop where the body is guaranteed to be executed at least once, and
+   * can therefore be unrolled in the control flow graph.
+   */
+  abstract class UnrollableLoopStmt extends LoopStmt {
+    /** Holds if the step `pred --c--> succ` should start loop unrolling. */
+    abstract predicate startUnroll(ControlFlowElement pred, ControlFlowElement succ, Completion c);
+
+    /** Holds if the step `pred --c--> succ` should stop loop unrolling. */
+    abstract predicate stopUnroll(ControlFlowElement pred, ControlFlowElement succ, Completion c);
+
+    /**
+     * Holds if any step `pred --c--> _` should be pruned from the unrolled loop
+     * (the loop condition evaluating to `false`).
+     */
+    abstract predicate pruneLoopCondition(ControlFlowElement pred, ConditionalCompletion c);
+  }
+
+  private class UnrollableForeachStmt extends UnrollableLoopStmt, ForeachStmt {
+    UnrollableForeachStmt() {
+      exists(Guards::AbstractValues::EmptyCollectionValue v | v.isNonEmpty() |
+        emptinessGuarded(_, this.getIterableExpr(), v)
+        or
+        this.getIterableExpr() = v.getAnExpr()
+      )
+    }
+
+    override predicate startUnroll(ControlFlowElement pred, ControlFlowElement succ, Completion c) {
+      pred = last(this.getIterableExpr(), c) and
+      succ = this
+    }
+
+    override predicate stopUnroll(ControlFlowElement pred, ControlFlowElement succ, Completion c) {
+      pred = this and
+      succ = succ(pred, c)
+    }
+
+    override predicate pruneLoopCondition(ControlFlowElement pred, ConditionalCompletion c) {
+      pred = this and
+      c.(EmptinessCompletion).isEmpty()
+    }
+  }
+
+  /**
+   * A split for loops where the body is guaranteed to be executed at least once, and
+   * can therefore be unrolled in the control flow graph. For example, in
+   *
+   * ```
+   * void M(string[] args)
+   * {
+   *     if (args.Length == 0)
+   *         return;
+   *     foreach (var arg in args)
+   *         System.Console.WriteLine(args);
+   * }
+   * ```
+   *
+   * the `foreach` loop is guaranteed to be executed at least once, as a result of the
+   * `args.Length == 0` check.
+   */
+  class LoopUnrollingSplitImpl extends SplitImpl, TLoopUnrollingSplit {
+    UnrollableLoopStmt loop;
+
+    LoopUnrollingSplitImpl() { this = TLoopUnrollingSplit(loop) }
+
+    override string toString() {
+      result = "unroll (line " + loop.getLocation().getStartLine() + ")"
+    }
+  }
+
+  private int getListOrder(UnrollableLoopStmt loop) {
+    exists(Callable c, int r | c = loop.getEnclosingCallable() |
+      result = r + BooleanSplitting::getNextListOrder() - 1 and
+      loop = rank[r](UnrollableLoopStmt loop0 |
+          loop0.getEnclosingCallable() = c
+        |
+          loop0 order by loop0.getLocation().getStartLine(), loop0.getLocation().getStartColumn()
+        )
+    )
+  }
+
+  int getNextListOrder() {
+    result = max(int i | i = getListOrder(_) + 1 or i = BooleanSplitting::getNextListOrder())
+  }
+
+  private class LoopUnrollingSplitKind extends SplitKind, TLoopUnrollingSplitKind {
+    private UnrollableLoopStmt loop;
+
+    LoopUnrollingSplitKind() { this = TLoopUnrollingSplitKind(loop) }
+
+    override int getListOrder() { result = getListOrder(loop) }
+
+    override string toString() { result = "Unroll" }
+  }
+
+  private class LoopUnrollingSplitInternal extends SplitInternal, LoopUnrollingSplitImpl {
+    override LoopUnrollingSplitKind getKind() { result = TLoopUnrollingSplitKind(loop) }
+
+    override predicate hasEntry(ControlFlowElement pred, ControlFlowElement succ, Completion c) {
+      loop.startUnroll(pred, succ, c)
+    }
+
+    override predicate hasEntry(Callable pred, ControlFlowElement succ) { none() }
+
+    /**
+     * Holds if this split applies to control flow element `pred`, where `pred`
+     * is a valid predecessor.
+     */
+    private predicate appliesToPredecessor(ControlFlowElement pred, Completion c) {
+      this.appliesTo(pred) and
+      (exists(succ(pred, c)) or exists(succExit(pred, c))) and
+      not loop.pruneLoopCondition(pred, c)
+    }
+
+    override predicate hasExit(ControlFlowElement pred, ControlFlowElement succ, Completion c) {
+      this.appliesToPredecessor(pred, c) and
+      loop.stopUnroll(pred, succ, c)
+    }
+
+    override Callable hasExit(ControlFlowElement pred, Completion c) {
+      this.appliesToPredecessor(pred, c) and
+      result = succExit(pred, c)
+    }
+
+    override predicate hasSuccessor(ControlFlowElement pred, ControlFlowElement succ, Completion c) {
+      this.appliesToPredecessor(pred, c) and
+      succ = succ(pred, c) and
+      not loop.stopUnroll(pred, succ, c)
+    }
+  }
+}
+
 /**
 * A set of control flow node splits. The set is represented by a list of splits,
 * ordered by ascending rank.
--- a/csharp/ql/src/semmle/code/csharp/dataflow/Nullness.qll
+++ b/csharp/ql/src/semmle/code/csharp/dataflow/Nullness.qll
@@ -143,7 +143,7 @@ private predicate ensureNotNullAt(BasicBlock bb, int i, Ssa::Definition def) {
    G::Internal::asserts(bb.getNode(i).getElement(), e, v)
  |
    exprImpliesSsaDef(e, v, def, nv) and
-    not nv.isNull()
+    nv.isNonNull()
  )
 }

@@ -258,7 +258,7 @@ private predicate defNullImpliesStep(
    bb1.getLastNode() = getANullCheck(def1, s, nv).getAControlFlowNode()
  |
    bb2 = bb1.getASuccessorByType(s) and
-    not nv.isNull()
+    nv.isNonNull()
  )
 }

--- a/csharp/ql/src/semmle/code/csharp/dataflow/internal/BaseSSA.qll
+++ b/csharp/ql/src/semmle/code/csharp/dataflow/internal/BaseSSA.qll
@@ -9,14 +9,13 @@ module BaseSsa {
  private import ControlFlow
  private import AssignableDefinitions

+  pragma[noinline]
+  Callable getAnAssigningCallable(LocalScopeVariable v) {
+    result = any(AssignableDefinition def | def.getTarget() = v).getEnclosingCallable()
+  }
+
  private class SimpleLocalScopeVariable extends LocalScopeVariable {
-    SimpleLocalScopeVariable() {
-      not exists(AssignableDefinition def1, AssignableDefinition def2 |
-        def1.getTarget() = this and
-        def2.getTarget() = this and
-        def1.getEnclosingCallable() != def2.getEnclosingCallable()
-      )
-    }
+    SimpleLocalScopeVariable() { not getAnAssigningCallable(this) != getAnAssigningCallable(this) }
  }

  /**
--- a/csharp/ql/src/semmle/code/csharp/frameworks/System.qll
+++ b/csharp/ql/src/semmle/code/csharp/frameworks/System.qll
@@ -54,6 +54,9 @@ class SystemActionTDelegateType extends SystemUnboundGenericDelegateType {
 /** `System.Array` class. */
 class SystemArrayClass extends SystemClass {
  SystemArrayClass() { this.hasName("Array") }
+
+  /** Gets the `Length` property. */
+  Property getLengthProperty() { result = this.getProperty("Length") }
 }

 /** `System.Attribute` class. */
--- a/csharp/ql/src/semmle/code/csharp/frameworks/system/Linq.qll
+++ b/csharp/ql/src/semmle/code/csharp/frameworks/system/Linq.qll
@@ -18,4 +18,15 @@ module SystemLinq {
  class Class extends csharp::Class {
    Class() { this.getNamespace() instanceof Namespace }
  }
+
+  /** The `System.Linq.Enumerable` class. */
+  class SystemLinqEnumerableClass extends Class {
+    SystemLinqEnumerableClass() { this.hasName("Enumerable") }
+
+    /** Gets a `Count()` method. */
+    csharp::ExtensionMethod getACountMethod() { result = this.getAMethod("Count") }
+
+    /** Gets an `Any()` method. */
+    csharp::ExtensionMethod getAnAnyMethod() { result = this.getAMethod("Any") }
+  }
 }
--- a/csharp/ql/src/semmle/code/csharp/frameworks/system/collections/Generic.qll
+++ b/csharp/ql/src/semmle/code/csharp/frameworks/system/collections/Generic.qll
@@ -18,6 +18,13 @@ class SystemCollectionsGenericUnboundGenericInterface extends UnboundGenericInte
  }
 }

+/** An unbound generic class in the `System.Collections.Generic` namespace. */
+class SystemCollectionsGenericUnboundGenericClass extends UnboundGenericClass {
+  SystemCollectionsGenericUnboundGenericClass() {
+    this.getNamespace() instanceof SystemCollectionsGenericNamespace
+  }
+}
+
 /** An unbound generic struct in the `System.Collections.Generic` namespace. */
 class SystemCollectionsGenericUnboundGenericStruct extends UnboundGenericStruct {
  SystemCollectionsGenericUnboundGenericStruct() {
@@ -86,6 +93,14 @@ class SystemCollectionsGenericIListTInterface extends SystemCollectionsGenericUn
  }
 }

+/** The `System.Collections.Generic.List<T>` class. */
+class SystemCollectionsGenericListClass extends SystemCollectionsGenericUnboundGenericClass {
+  SystemCollectionsGenericListClass() {
+    this.hasName("List<>") and
+    this.getNumberOfTypeParameters() = 1
+  }
+}
+
 /** The `System.Collections.Generic.KeyValuePair<TKey, TValue>` structure. */
 class SystemCollectionsGenericKeyValuePairStruct extends SystemCollectionsGenericUnboundGenericStruct {
  SystemCollectionsGenericKeyValuePairStruct() {
@@ -111,4 +126,13 @@ class SystemCollectionsGenericKeyValuePairStruct extends SystemCollectionsGeneri
 /** The `System.Collections.Generic.ICollection<>` interface. */
 class SystemCollectionsGenericICollectionInterface extends SystemCollectionsGenericUnboundGenericInterface {
  SystemCollectionsGenericICollectionInterface() { this.hasName("ICollection<>") }
+
+  /** Gets the `Count` property. */
+  Property getCountProperty() { result = this.getProperty("Count") }
+
+  /** Gets the `Clear` method. */
+  Method getClearMethod() { result = this.getAMethod("Clear") }
+
+  /** Gets the `Add` method. */
+  Method getAddMethod() { result = this.getAMethod("Add") }
 }
--- a/csharp/ql/test/library-tests/controlflow/graph/BasicBlock.expected
+++ b/csharp/ql/test/library-tests/controlflow/graph/BasicBlock.expected
@@ -285,6 +285,42 @@
 | Initializers.cs:29:9:29:11 | enter Sub | Initializers.cs:29:9:29:11 | exit Sub | 11 |
 | Initializers.cs:31:9:31:11 | enter Sub | Initializers.cs:31:9:31:11 | exit Sub | 8 |
 | Initializers.cs:33:9:33:11 | enter Sub | Initializers.cs:33:9:33:11 | exit Sub | 18 |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:9:13:9:28 | ... == ... | 7 |
+| LoopUnrolling.cs:7:10:7:11 | exit M1 | LoopUnrolling.cs:7:10:7:11 | exit M1 | 1 |
+| LoopUnrolling.cs:10:13:10:19 | return ...; | LoopUnrolling.cs:10:13:10:19 | return ...; | 1 |
+| LoopUnrolling.cs:11:21:11:23 | String arg | LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... | 5 |
+| LoopUnrolling.cs:11:28:11:31 | access to parameter args | LoopUnrolling.cs:11:9:12:35 | [unroll (line 11)] foreach (... ... in ...) ... | 2 |
+| LoopUnrolling.cs:15:10:15:11 | enter M2 | LoopUnrolling.cs:18:9:19:33 | [unroll (line 18)] foreach (... ... in ...) ... | 11 |
+| LoopUnrolling.cs:15:10:15:11 | exit M2 | LoopUnrolling.cs:15:10:15:11 | exit M2 | 1 |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... | 5 |
+| LoopUnrolling.cs:22:10:22:11 | enter M3 | LoopUnrolling.cs:24:29:24:32 | access to parameter args | 3 |
+| LoopUnrolling.cs:22:10:22:11 | exit M3 | LoopUnrolling.cs:22:10:22:11 | exit M3 | 1 |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | 1 |
+| LoopUnrolling.cs:24:22:24:24 | Char arg | LoopUnrolling.cs:25:13:26:40 | [unroll (line 25)] foreach (... ... in ...) ... | 3 |
+| LoopUnrolling.cs:25:26:25:29 | Char arg0 | LoopUnrolling.cs:25:13:26:40 | foreach (... ... in ...) ... | 5 |
+| LoopUnrolling.cs:29:10:29:11 | enter M4 | LoopUnrolling.cs:32:26:32:27 | access to local variable xs | 7 |
+| LoopUnrolling.cs:29:10:29:11 | exit M4 | LoopUnrolling.cs:29:10:29:11 | exit M4 | 1 |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | 1 |
+| LoopUnrolling.cs:32:21:32:21 | String x | LoopUnrolling.cs:33:13:33:32 | call to method WriteLine | 4 |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:40:9:42:41 | [unroll (line 40)] foreach (... ... in ...) ... | 18 |
+| LoopUnrolling.cs:36:10:36:11 | exit M5 | LoopUnrolling.cs:36:10:36:11 | exit M5 | 1 |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | 1 |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:41:13:42:41 | [unroll (line 41)] foreach (... ... in ...) ... | 3 |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... | 7 |
+| LoopUnrolling.cs:45:10:45:11 | enter M6 | LoopUnrolling.cs:49:9:52:9 | {...} | 13 |
+| LoopUnrolling.cs:50:13:50:17 | Label: | LoopUnrolling.cs:51:13:51:23 | goto ...; | 5 |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:60:17:60:17 | access to parameter b | 15 |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:55:10:55:11 | exit M7 | 1 |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x | LoopUnrolling.cs:60:17:60:17 | [b (line 55): false] access to parameter b | 4 |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x | LoopUnrolling.cs:60:17:60:17 | [b (line 55): true] access to parameter b | 4 |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | LoopUnrolling.cs:58:9:64:9 | [b (line 55): true] foreach (... ... in ...) ... | 9 |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:58:9:64:9 | [b (line 55): false] foreach (... ... in ...) ... | 3 |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:69:14:69:23 | call to method Any | 6 |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:67:10:67:11 | exit M8 | 1 |
+| LoopUnrolling.cs:70:13:70:19 | return ...; | LoopUnrolling.cs:70:13:70:19 | return ...; | 1 |
+| LoopUnrolling.cs:71:9:71:21 | ...; | LoopUnrolling.cs:72:28:72:31 | access to parameter args | 4 |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | 1 |
+| LoopUnrolling.cs:72:21:72:23 | String arg | LoopUnrolling.cs:73:13:73:34 | call to method WriteLine | 4 |
 | NullCoalescing.cs:3:9:3:10 | enter M1 | NullCoalescing.cs:3:23:3:23 | access to parameter i | 3 |
 | NullCoalescing.cs:3:9:3:10 | exit M1 | NullCoalescing.cs:3:9:3:10 | exit M1 | 1 |
 | NullCoalescing.cs:3:28:3:28 | 0 | NullCoalescing.cs:3:28:3:28 | 0 | 1 |
--- a/csharp/ql/test/library-tests/controlflow/graph/Condition.expected
+++ b/csharp/ql/test/library-tests/controlflow/graph/Condition.expected
@@ -227,6 +227,40 @@ conditionBlock
 | Foreach.cs:32:9:33:11 | foreach (... ... in ...) ... | Foreach.cs:32:23:32:23 | String x | false |
 | Foreach.cs:38:9:39:11 | foreach (... ... in ...) ... | Foreach.cs:36:10:36:11 | exit M6 | true |
 | Foreach.cs:38:9:39:11 | foreach (... ... in ...) ... | Foreach.cs:38:26:38:26 | String x | false |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:10:13:10:19 | return ...; | true |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:11:21:11:23 | String arg | false |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:11:28:11:31 | access to parameter args | false |
+| LoopUnrolling.cs:11:28:11:31 | access to parameter args | LoopUnrolling.cs:11:21:11:23 | String arg | false |
+| LoopUnrolling.cs:15:10:15:11 | enter M2 | LoopUnrolling.cs:15:10:15:11 | exit M2 | false |
+| LoopUnrolling.cs:15:10:15:11 | enter M2 | LoopUnrolling.cs:18:21:18:21 | String x | false |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:15:10:15:11 | exit M2 | true |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:22:10:22:11 | exit M3 | true |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:22:24:24 | Char arg | false |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:25:26:25:29 | Char arg0 | false |
+| LoopUnrolling.cs:24:22:24:24 | Char arg | LoopUnrolling.cs:25:26:25:29 | Char arg0 | false |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:29:10:29:11 | exit M4 | true |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:32:21:32:21 | String x | false |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:36:10:36:11 | exit M5 | false |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | false |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:40:21:40:21 | String x | false |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:41:25:41:25 | String y | false |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:36:10:36:11 | exit M5 | true |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:36:10:36:11 | exit M5 | false |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | false |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:41:25:41:25 | String y | false |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:36:10:36:11 | exit M5 | true |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | true |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x | false |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x | true |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | true |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | false |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x | false |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x | false |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:70:13:70:19 | return ...; | false |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:71:9:71:21 | ...; | true |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | true |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:72:21:72:23 | String arg | true |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:72:21:72:23 | String arg | false |
 | NullCoalescing.cs:3:9:3:10 | enter M1 | NullCoalescing.cs:3:28:3:28 | 0 | true |
 | NullCoalescing.cs:5:9:5:10 | enter M2 | NullCoalescing.cs:5:30:5:34 | false | true |
 | NullCoalescing.cs:5:9:5:10 | enter M2 | NullCoalescing.cs:5:39:5:39 | 0 | true |
@@ -822,6 +856,16 @@ conditionFlow
 | ExitMethods.cs:111:16:111:25 | ... != ... | ExitMethods.cs:111:69:111:75 | "input" | false |
 | ExitMethods.cs:116:16:116:30 | call to method Contains | ExitMethods.cs:116:34:116:34 | 0 | true |
 | ExitMethods.cs:116:16:116:30 | call to method Contains | ExitMethods.cs:116:38:116:38 | 1 | false |
+| LoopUnrolling.cs:9:13:9:28 | ... == ... | LoopUnrolling.cs:10:13:10:19 | return ...; | true |
+| LoopUnrolling.cs:9:13:9:28 | ... == ... | LoopUnrolling.cs:11:28:11:31 | access to parameter args | false |
+| LoopUnrolling.cs:60:17:60:17 | [b (line 55): false] access to parameter b | LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | false |
+| LoopUnrolling.cs:60:17:60:17 | [b (line 55): true] access to parameter b | LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | true |
+| LoopUnrolling.cs:60:17:60:17 | access to parameter b | LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | true |
+| LoopUnrolling.cs:60:17:60:17 | access to parameter b | LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | false |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): false] access to parameter b | LoopUnrolling.cs:58:9:64:9 | [b (line 55): false] foreach (... ... in ...) ... | false |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): true] access to parameter b | LoopUnrolling.cs:63:17:63:37 | [b (line 55): true] ...; | true |
+| LoopUnrolling.cs:69:14:69:23 | call to method Any | LoopUnrolling.cs:70:13:70:19 | return ...; | false |
+| LoopUnrolling.cs:69:14:69:23 | call to method Any | LoopUnrolling.cs:71:9:71:21 | ...; | true |
 | NullCoalescing.cs:5:25:5:25 | access to parameter b | NullCoalescing.cs:5:39:5:39 | 0 | true |
 | NullCoalescing.cs:5:25:5:25 | access to parameter b | NullCoalescing.cs:5:43:5:43 | 1 | false |
 | NullCoalescing.cs:5:30:5:34 | false | NullCoalescing.cs:5:43:5:43 | 1 | false |
--- a/csharp/ql/test/library-tests/controlflow/graph/Dominance.expected
+++ b/csharp/ql/test/library-tests/controlflow/graph/Dominance.expected
@@ -1310,6 +1310,155 @@ dominance
 | Initializers.cs:33:33:33:33 | access to parameter i | Initializers.cs:33:37:33:37 | access to parameter j |
 | Initializers.cs:33:33:33:37 | ... + ... | Initializers.cs:33:29:33:37 | ... = ... |
 | Initializers.cs:33:37:33:37 | access to parameter j | Initializers.cs:33:33:33:37 | ... + ... |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:8:5:13:5 | {...} |
+| LoopUnrolling.cs:8:5:13:5 | {...} | LoopUnrolling.cs:9:9:10:19 | if (...) ... |
+| LoopUnrolling.cs:9:9:10:19 | if (...) ... | LoopUnrolling.cs:9:13:9:16 | access to parameter args |
+| LoopUnrolling.cs:9:13:9:16 | access to parameter args | LoopUnrolling.cs:9:13:9:23 | access to property Length |
+| LoopUnrolling.cs:9:13:9:23 | access to property Length | LoopUnrolling.cs:9:28:9:28 | 0 |
+| LoopUnrolling.cs:9:13:9:28 | ... == ... | LoopUnrolling.cs:10:13:10:19 | return ...; |
+| LoopUnrolling.cs:9:13:9:28 | ... == ... | LoopUnrolling.cs:11:28:11:31 | access to parameter args |
+| LoopUnrolling.cs:9:28:9:28 | 0 | LoopUnrolling.cs:9:13:9:28 | ... == ... |
+| LoopUnrolling.cs:11:9:12:35 | [unroll (line 11)] foreach (... ... in ...) ... | LoopUnrolling.cs:11:21:11:23 | String arg |
+| LoopUnrolling.cs:11:21:11:23 | String arg | LoopUnrolling.cs:12:13:12:35 | ...; |
+| LoopUnrolling.cs:11:28:11:31 | access to parameter args | LoopUnrolling.cs:11:9:12:35 | [unroll (line 11)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:12:13:12:34 | call to method WriteLine | LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:12:13:12:35 | ...; | LoopUnrolling.cs:12:31:12:33 | access to local variable arg |
+| LoopUnrolling.cs:12:31:12:33 | access to local variable arg | LoopUnrolling.cs:12:13:12:34 | call to method WriteLine |
+| LoopUnrolling.cs:15:10:15:11 | enter M2 | LoopUnrolling.cs:16:5:20:5 | {...} |
+| LoopUnrolling.cs:16:5:20:5 | {...} | LoopUnrolling.cs:17:9:17:47 | ... ...; |
+| LoopUnrolling.cs:17:9:17:47 | ... ...; | LoopUnrolling.cs:17:18:17:46 | array creation of type String[] |
+| LoopUnrolling.cs:17:13:17:46 | String[] xs = ... | LoopUnrolling.cs:18:26:18:27 | access to local variable xs |
+| LoopUnrolling.cs:17:18:17:46 | array creation of type String[] | LoopUnrolling.cs:17:32:17:34 | "a" |
+| LoopUnrolling.cs:17:30:17:46 | { ..., ... } | LoopUnrolling.cs:17:13:17:46 | String[] xs = ... |
+| LoopUnrolling.cs:17:32:17:34 | "a" | LoopUnrolling.cs:17:37:17:39 | "b" |
+| LoopUnrolling.cs:17:37:17:39 | "b" | LoopUnrolling.cs:17:42:17:44 | "c" |
+| LoopUnrolling.cs:17:42:17:44 | "c" | LoopUnrolling.cs:17:30:17:46 | { ..., ... } |
+| LoopUnrolling.cs:18:9:19:33 | [unroll (line 18)] foreach (... ... in ...) ... | LoopUnrolling.cs:18:21:18:21 | String x |
+| LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:15:10:15:11 | exit M2 |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:19:13:19:33 | ...; |
+| LoopUnrolling.cs:18:26:18:27 | access to local variable xs | LoopUnrolling.cs:18:9:19:33 | [unroll (line 18)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:19:13:19:32 | call to method WriteLine | LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:19:13:19:33 | ...; | LoopUnrolling.cs:19:31:19:31 | access to local variable x |
+| LoopUnrolling.cs:19:31:19:31 | access to local variable x | LoopUnrolling.cs:19:13:19:32 | call to method WriteLine |
+| LoopUnrolling.cs:22:10:22:11 | enter M3 | LoopUnrolling.cs:23:5:27:5 | {...} |
+| LoopUnrolling.cs:23:5:27:5 | {...} | LoopUnrolling.cs:24:29:24:32 | access to parameter args |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:22:10:22:11 | exit M3 |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:22:24:24 | Char arg |
+| LoopUnrolling.cs:24:22:24:24 | Char arg | LoopUnrolling.cs:25:34:25:37 | access to parameter args |
+| LoopUnrolling.cs:24:29:24:32 | access to parameter args | LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:25:13:26:40 | [unroll (line 25)] foreach (... ... in ...) ... | LoopUnrolling.cs:25:26:25:29 | Char arg0 |
+| LoopUnrolling.cs:25:26:25:29 | Char arg0 | LoopUnrolling.cs:26:17:26:40 | ...; |
+| LoopUnrolling.cs:25:34:25:37 | access to parameter args | LoopUnrolling.cs:25:13:26:40 | [unroll (line 25)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:26:17:26:39 | call to method WriteLine | LoopUnrolling.cs:25:13:26:40 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:26:17:26:40 | ...; | LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 |
+| LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 | LoopUnrolling.cs:26:17:26:39 | call to method WriteLine |
+| LoopUnrolling.cs:29:10:29:11 | enter M4 | LoopUnrolling.cs:30:5:34:5 | {...} |
+| LoopUnrolling.cs:30:5:34:5 | {...} | LoopUnrolling.cs:31:9:31:31 | ... ...; |
+| LoopUnrolling.cs:31:9:31:31 | ... ...; | LoopUnrolling.cs:31:29:31:29 | 0 |
+| LoopUnrolling.cs:31:13:31:30 | String[] xs = ... | LoopUnrolling.cs:32:26:32:27 | access to local variable xs |
+| LoopUnrolling.cs:31:18:31:30 | array creation of type String[] | LoopUnrolling.cs:31:13:31:30 | String[] xs = ... |
+| LoopUnrolling.cs:31:29:31:29 | 0 | LoopUnrolling.cs:31:18:31:30 | array creation of type String[] |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:29:10:29:11 | exit M4 |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:32:21:32:21 | String x |
+| LoopUnrolling.cs:32:21:32:21 | String x | LoopUnrolling.cs:33:13:33:33 | ...; |
+| LoopUnrolling.cs:32:26:32:27 | access to local variable xs | LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:33:13:33:33 | ...; | LoopUnrolling.cs:33:31:33:31 | access to local variable x |
+| LoopUnrolling.cs:33:31:33:31 | access to local variable x | LoopUnrolling.cs:33:13:33:32 | call to method WriteLine |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:37:5:43:5 | {...} |
+| LoopUnrolling.cs:37:5:43:5 | {...} | LoopUnrolling.cs:38:9:38:47 | ... ...; |
+| LoopUnrolling.cs:38:9:38:47 | ... ...; | LoopUnrolling.cs:38:18:38:46 | array creation of type String[] |
+| LoopUnrolling.cs:38:13:38:46 | String[] xs = ... | LoopUnrolling.cs:39:9:39:47 | ... ...; |
+| LoopUnrolling.cs:38:18:38:46 | array creation of type String[] | LoopUnrolling.cs:38:32:38:34 | "a" |
+| LoopUnrolling.cs:38:30:38:46 | { ..., ... } | LoopUnrolling.cs:38:13:38:46 | String[] xs = ... |
+| LoopUnrolling.cs:38:32:38:34 | "a" | LoopUnrolling.cs:38:37:38:39 | "b" |
+| LoopUnrolling.cs:38:37:38:39 | "b" | LoopUnrolling.cs:38:42:38:44 | "c" |
+| LoopUnrolling.cs:38:42:38:44 | "c" | LoopUnrolling.cs:38:30:38:46 | { ..., ... } |
+| LoopUnrolling.cs:39:9:39:47 | ... ...; | LoopUnrolling.cs:39:18:39:46 | array creation of type String[] |
+| LoopUnrolling.cs:39:13:39:46 | String[] ys = ... | LoopUnrolling.cs:40:26:40:27 | access to local variable xs |
+| LoopUnrolling.cs:39:18:39:46 | array creation of type String[] | LoopUnrolling.cs:39:32:39:34 | "0" |
+| LoopUnrolling.cs:39:30:39:46 | { ..., ... } | LoopUnrolling.cs:39:13:39:46 | String[] ys = ... |
+| LoopUnrolling.cs:39:32:39:34 | "0" | LoopUnrolling.cs:39:37:39:39 | "1" |
+| LoopUnrolling.cs:39:37:39:39 | "1" | LoopUnrolling.cs:39:42:39:44 | "2" |
+| LoopUnrolling.cs:39:42:39:44 | "2" | LoopUnrolling.cs:39:30:39:46 | { ..., ... } |
+| LoopUnrolling.cs:40:9:42:41 | [unroll (line 40)] foreach (... ... in ...) ... | LoopUnrolling.cs:40:21:40:21 | String x |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:36:10:36:11 | exit M5 |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:41:30:41:31 | access to local variable ys |
+| LoopUnrolling.cs:40:26:40:27 | access to local variable xs | LoopUnrolling.cs:40:9:42:41 | [unroll (line 40)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:41:13:42:41 | [unroll (line 41)] foreach (... ... in ...) ... | LoopUnrolling.cs:41:25:41:25 | String y |
+| LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:42:17:42:41 | ...; |
+| LoopUnrolling.cs:41:30:41:31 | access to local variable ys | LoopUnrolling.cs:41:13:42:41 | [unroll (line 41)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:42:17:42:40 | call to method WriteLine | LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:42:17:42:41 | ...; | LoopUnrolling.cs:42:35:42:35 | access to local variable x |
+| LoopUnrolling.cs:42:35:42:35 | access to local variable x | LoopUnrolling.cs:42:39:42:39 | access to local variable y |
+| LoopUnrolling.cs:42:35:42:39 | ... + ... | LoopUnrolling.cs:42:17:42:40 | call to method WriteLine |
+| LoopUnrolling.cs:42:39:42:39 | access to local variable y | LoopUnrolling.cs:42:35:42:39 | ... + ... |
+| LoopUnrolling.cs:45:10:45:11 | enter M6 | LoopUnrolling.cs:46:5:53:5 | {...} |
+| LoopUnrolling.cs:46:5:53:5 | {...} | LoopUnrolling.cs:47:9:47:47 | ... ...; |
+| LoopUnrolling.cs:47:9:47:47 | ... ...; | LoopUnrolling.cs:47:18:47:46 | array creation of type String[] |
+| LoopUnrolling.cs:47:13:47:46 | String[] xs = ... | LoopUnrolling.cs:48:26:48:27 | access to local variable xs |
+| LoopUnrolling.cs:47:18:47:46 | array creation of type String[] | LoopUnrolling.cs:47:32:47:34 | "a" |
+| LoopUnrolling.cs:47:30:47:46 | { ..., ... } | LoopUnrolling.cs:47:13:47:46 | String[] xs = ... |
+| LoopUnrolling.cs:47:32:47:34 | "a" | LoopUnrolling.cs:47:37:47:39 | "b" |
+| LoopUnrolling.cs:47:37:47:39 | "b" | LoopUnrolling.cs:47:42:47:44 | "c" |
+| LoopUnrolling.cs:47:42:47:44 | "c" | LoopUnrolling.cs:47:30:47:46 | { ..., ... } |
+| LoopUnrolling.cs:48:9:52:9 | [unroll (line 48)] foreach (... ... in ...) ... | LoopUnrolling.cs:48:21:48:21 | String x |
+| LoopUnrolling.cs:48:21:48:21 | String x | LoopUnrolling.cs:49:9:52:9 | {...} |
+| LoopUnrolling.cs:48:26:48:27 | access to local variable xs | LoopUnrolling.cs:48:9:52:9 | [unroll (line 48)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:49:9:52:9 | {...} | LoopUnrolling.cs:50:13:50:17 | Label: |
+| LoopUnrolling.cs:50:13:50:17 | Label: | LoopUnrolling.cs:50:20:50:40 | ...; |
+| LoopUnrolling.cs:50:20:50:39 | call to method WriteLine | LoopUnrolling.cs:51:13:51:23 | goto ...; |
+| LoopUnrolling.cs:50:20:50:40 | ...; | LoopUnrolling.cs:50:38:50:38 | access to local variable x |
+| LoopUnrolling.cs:50:38:50:38 | access to local variable x | LoopUnrolling.cs:50:20:50:39 | call to method WriteLine |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:56:5:65:5 | {...} |
+| LoopUnrolling.cs:56:5:65:5 | {...} | LoopUnrolling.cs:57:9:57:47 | ... ...; |
+| LoopUnrolling.cs:57:9:57:47 | ... ...; | LoopUnrolling.cs:57:18:57:46 | array creation of type String[] |
+| LoopUnrolling.cs:57:13:57:46 | String[] xs = ... | LoopUnrolling.cs:58:26:58:27 | access to local variable xs |
+| LoopUnrolling.cs:57:18:57:46 | array creation of type String[] | LoopUnrolling.cs:57:32:57:34 | "a" |
+| LoopUnrolling.cs:57:30:57:46 | { ..., ... } | LoopUnrolling.cs:57:13:57:46 | String[] xs = ... |
+| LoopUnrolling.cs:57:32:57:34 | "a" | LoopUnrolling.cs:57:37:57:39 | "b" |
+| LoopUnrolling.cs:57:37:57:39 | "b" | LoopUnrolling.cs:57:42:57:44 | "c" |
+| LoopUnrolling.cs:57:42:57:44 | "c" | LoopUnrolling.cs:57:30:57:46 | { ..., ... } |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): false] foreach (... ... in ...) ... | LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): true] foreach (... ... in ...) ... | LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x |
+| LoopUnrolling.cs:58:9:64:9 | [unroll (line 58)] foreach (... ... in ...) ... | LoopUnrolling.cs:58:21:58:21 | String x |
+| LoopUnrolling.cs:58:21:58:21 | String x | LoopUnrolling.cs:59:9:64:9 | {...} |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x | LoopUnrolling.cs:59:9:64:9 | [b (line 55): false] {...} |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x | LoopUnrolling.cs:59:9:64:9 | [b (line 55): true] {...} |
+| LoopUnrolling.cs:58:26:58:27 | access to local variable xs | LoopUnrolling.cs:58:9:64:9 | [unroll (line 58)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:59:9:64:9 | [b (line 55): false] {...} | LoopUnrolling.cs:60:13:61:37 | [b (line 55): false] if (...) ... |
+| LoopUnrolling.cs:59:9:64:9 | [b (line 55): true] {...} | LoopUnrolling.cs:60:13:61:37 | [b (line 55): true] if (...) ... |
+| LoopUnrolling.cs:59:9:64:9 | {...} | LoopUnrolling.cs:60:13:61:37 | if (...) ... |
+| LoopUnrolling.cs:60:13:61:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:60:17:60:17 | [b (line 55): false] access to parameter b |
+| LoopUnrolling.cs:60:13:61:37 | [b (line 55): true] if (...) ... | LoopUnrolling.cs:60:17:60:17 | [b (line 55): true] access to parameter b |
+| LoopUnrolling.cs:60:13:61:37 | if (...) ... | LoopUnrolling.cs:60:17:60:17 | access to parameter b |
+| LoopUnrolling.cs:60:17:60:17 | access to parameter b | LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; |
+| LoopUnrolling.cs:60:17:60:17 | access to parameter b | LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... |
+| LoopUnrolling.cs:61:17:61:36 | [b (line 55): true] call to method WriteLine | LoopUnrolling.cs:62:13:63:37 | [b (line 55): true] if (...) ... |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | LoopUnrolling.cs:61:35:61:35 | [b (line 55): true] access to local variable x |
+| LoopUnrolling.cs:61:35:61:35 | [b (line 55): true] access to local variable x | LoopUnrolling.cs:61:17:61:36 | [b (line 55): true] call to method WriteLine |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:62:17:62:17 | [b (line 55): false] access to parameter b |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): true] if (...) ... | LoopUnrolling.cs:62:17:62:17 | [b (line 55): true] access to parameter b |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): false] access to parameter b | LoopUnrolling.cs:58:9:64:9 | [b (line 55): false] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): true] access to parameter b | LoopUnrolling.cs:63:17:63:37 | [b (line 55): true] ...; |
+| LoopUnrolling.cs:63:17:63:36 | [b (line 55): true] call to method WriteLine | LoopUnrolling.cs:58:9:64:9 | [b (line 55): true] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:63:17:63:37 | [b (line 55): true] ...; | LoopUnrolling.cs:63:35:63:35 | [b (line 55): true] access to local variable x |
+| LoopUnrolling.cs:63:35:63:35 | [b (line 55): true] access to local variable x | LoopUnrolling.cs:63:17:63:36 | [b (line 55): true] call to method WriteLine |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:68:5:74:5 | {...} |
+| LoopUnrolling.cs:68:5:74:5 | {...} | LoopUnrolling.cs:69:9:70:19 | if (...) ... |
+| LoopUnrolling.cs:69:9:70:19 | if (...) ... | LoopUnrolling.cs:69:13:69:23 | !... |
+| LoopUnrolling.cs:69:13:69:23 | !... | LoopUnrolling.cs:69:14:69:17 | access to parameter args |
+| LoopUnrolling.cs:69:14:69:17 | access to parameter args | LoopUnrolling.cs:69:14:69:23 | call to method Any |
+| LoopUnrolling.cs:69:14:69:23 | call to method Any | LoopUnrolling.cs:70:13:70:19 | return ...; |
+| LoopUnrolling.cs:69:14:69:23 | call to method Any | LoopUnrolling.cs:71:9:71:21 | ...; |
+| LoopUnrolling.cs:71:9:71:12 | access to parameter args | LoopUnrolling.cs:71:9:71:20 | call to method Clear |
+| LoopUnrolling.cs:71:9:71:20 | call to method Clear | LoopUnrolling.cs:72:28:72:31 | access to parameter args |
+| LoopUnrolling.cs:71:9:71:21 | ...; | LoopUnrolling.cs:71:9:71:12 | access to parameter args |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:72:21:72:23 | String arg |
+| LoopUnrolling.cs:72:21:72:23 | String arg | LoopUnrolling.cs:73:13:73:35 | ...; |
+| LoopUnrolling.cs:72:28:72:31 | access to parameter args | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:73:13:73:35 | ...; | LoopUnrolling.cs:73:31:73:33 | access to local variable arg |
+| LoopUnrolling.cs:73:31:73:33 | access to local variable arg | LoopUnrolling.cs:73:13:73:34 | call to method WriteLine |
 | NullCoalescing.cs:3:9:3:10 | enter M1 | NullCoalescing.cs:3:23:3:28 | ... ?? ... |
 | NullCoalescing.cs:3:23:3:23 | access to parameter i | NullCoalescing.cs:3:9:3:10 | exit M1 |
 | NullCoalescing.cs:3:23:3:23 | access to parameter i | NullCoalescing.cs:3:28:3:28 | 0 |
@@ -3946,6 +4095,154 @@ postDominance
 | Initializers.cs:33:33:33:33 | access to parameter i | Initializers.cs:33:29:33:29 | this access |
 | Initializers.cs:33:33:33:37 | ... + ... | Initializers.cs:33:37:33:37 | access to parameter j |
 | Initializers.cs:33:37:33:37 | access to parameter j | Initializers.cs:33:33:33:33 | access to parameter i |
+| LoopUnrolling.cs:7:10:7:11 | exit M1 | LoopUnrolling.cs:10:13:10:19 | return ...; |
+| LoopUnrolling.cs:7:10:7:11 | exit M1 | LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:8:5:13:5 | {...} | LoopUnrolling.cs:7:10:7:11 | enter M1 |
+| LoopUnrolling.cs:9:9:10:19 | if (...) ... | LoopUnrolling.cs:8:5:13:5 | {...} |
+| LoopUnrolling.cs:9:13:9:16 | access to parameter args | LoopUnrolling.cs:9:9:10:19 | if (...) ... |
+| LoopUnrolling.cs:9:13:9:23 | access to property Length | LoopUnrolling.cs:9:13:9:16 | access to parameter args |
+| LoopUnrolling.cs:9:13:9:28 | ... == ... | LoopUnrolling.cs:9:28:9:28 | 0 |
+| LoopUnrolling.cs:9:28:9:28 | 0 | LoopUnrolling.cs:9:13:9:23 | access to property Length |
+| LoopUnrolling.cs:11:9:12:35 | [unroll (line 11)] foreach (... ... in ...) ... | LoopUnrolling.cs:11:28:11:31 | access to parameter args |
+| LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:12:13:12:34 | call to method WriteLine |
+| LoopUnrolling.cs:11:21:11:23 | String arg | LoopUnrolling.cs:11:9:12:35 | [unroll (line 11)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:12:13:12:34 | call to method WriteLine | LoopUnrolling.cs:12:31:12:33 | access to local variable arg |
+| LoopUnrolling.cs:12:13:12:35 | ...; | LoopUnrolling.cs:11:21:11:23 | String arg |
+| LoopUnrolling.cs:12:31:12:33 | access to local variable arg | LoopUnrolling.cs:12:13:12:35 | ...; |
+| LoopUnrolling.cs:15:10:15:11 | exit M2 | LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:16:5:20:5 | {...} | LoopUnrolling.cs:15:10:15:11 | enter M2 |
+| LoopUnrolling.cs:17:9:17:47 | ... ...; | LoopUnrolling.cs:16:5:20:5 | {...} |
+| LoopUnrolling.cs:17:13:17:46 | String[] xs = ... | LoopUnrolling.cs:17:30:17:46 | { ..., ... } |
+| LoopUnrolling.cs:17:18:17:46 | array creation of type String[] | LoopUnrolling.cs:17:9:17:47 | ... ...; |
+| LoopUnrolling.cs:17:30:17:46 | { ..., ... } | LoopUnrolling.cs:17:42:17:44 | "c" |
+| LoopUnrolling.cs:17:32:17:34 | "a" | LoopUnrolling.cs:17:18:17:46 | array creation of type String[] |
+| LoopUnrolling.cs:17:37:17:39 | "b" | LoopUnrolling.cs:17:32:17:34 | "a" |
+| LoopUnrolling.cs:17:42:17:44 | "c" | LoopUnrolling.cs:17:37:17:39 | "b" |
+| LoopUnrolling.cs:18:9:19:33 | [unroll (line 18)] foreach (... ... in ...) ... | LoopUnrolling.cs:18:26:18:27 | access to local variable xs |
+| LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:19:13:19:32 | call to method WriteLine |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:18:9:19:33 | [unroll (line 18)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:18:26:18:27 | access to local variable xs | LoopUnrolling.cs:17:13:17:46 | String[] xs = ... |
+| LoopUnrolling.cs:19:13:19:32 | call to method WriteLine | LoopUnrolling.cs:19:31:19:31 | access to local variable x |
+| LoopUnrolling.cs:19:13:19:33 | ...; | LoopUnrolling.cs:18:21:18:21 | String x |
+| LoopUnrolling.cs:19:31:19:31 | access to local variable x | LoopUnrolling.cs:19:13:19:33 | ...; |
+| LoopUnrolling.cs:22:10:22:11 | exit M3 | LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:23:5:27:5 | {...} | LoopUnrolling.cs:22:10:22:11 | enter M3 |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:29:24:32 | access to parameter args |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:25:13:26:40 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:24:29:24:32 | access to parameter args | LoopUnrolling.cs:23:5:27:5 | {...} |
+| LoopUnrolling.cs:25:13:26:40 | [unroll (line 25)] foreach (... ... in ...) ... | LoopUnrolling.cs:25:34:25:37 | access to parameter args |
+| LoopUnrolling.cs:25:13:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:26:17:26:39 | call to method WriteLine |
+| LoopUnrolling.cs:25:26:25:29 | Char arg0 | LoopUnrolling.cs:25:13:26:40 | [unroll (line 25)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:25:34:25:37 | access to parameter args | LoopUnrolling.cs:24:22:24:24 | Char arg |
+| LoopUnrolling.cs:26:17:26:39 | call to method WriteLine | LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 |
+| LoopUnrolling.cs:26:17:26:40 | ...; | LoopUnrolling.cs:25:26:25:29 | Char arg0 |
+| LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 | LoopUnrolling.cs:26:17:26:40 | ...; |
+| LoopUnrolling.cs:29:10:29:11 | exit M4 | LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:30:5:34:5 | {...} | LoopUnrolling.cs:29:10:29:11 | enter M4 |
+| LoopUnrolling.cs:31:9:31:31 | ... ...; | LoopUnrolling.cs:30:5:34:5 | {...} |
+| LoopUnrolling.cs:31:13:31:30 | String[] xs = ... | LoopUnrolling.cs:31:18:31:30 | array creation of type String[] |
+| LoopUnrolling.cs:31:18:31:30 | array creation of type String[] | LoopUnrolling.cs:31:29:31:29 | 0 |
+| LoopUnrolling.cs:31:29:31:29 | 0 | LoopUnrolling.cs:31:9:31:31 | ... ...; |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:32:26:32:27 | access to local variable xs |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:33:13:33:32 | call to method WriteLine |
+| LoopUnrolling.cs:32:26:32:27 | access to local variable xs | LoopUnrolling.cs:31:13:31:30 | String[] xs = ... |
+| LoopUnrolling.cs:33:13:33:32 | call to method WriteLine | LoopUnrolling.cs:33:31:33:31 | access to local variable x |
+| LoopUnrolling.cs:33:13:33:33 | ...; | LoopUnrolling.cs:32:21:32:21 | String x |
+| LoopUnrolling.cs:33:31:33:31 | access to local variable x | LoopUnrolling.cs:33:13:33:33 | ...; |
+| LoopUnrolling.cs:36:10:36:11 | exit M5 | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:37:5:43:5 | {...} | LoopUnrolling.cs:36:10:36:11 | enter M5 |
+| LoopUnrolling.cs:38:9:38:47 | ... ...; | LoopUnrolling.cs:37:5:43:5 | {...} |
+| LoopUnrolling.cs:38:13:38:46 | String[] xs = ... | LoopUnrolling.cs:38:30:38:46 | { ..., ... } |
+| LoopUnrolling.cs:38:18:38:46 | array creation of type String[] | LoopUnrolling.cs:38:9:38:47 | ... ...; |
+| LoopUnrolling.cs:38:30:38:46 | { ..., ... } | LoopUnrolling.cs:38:42:38:44 | "c" |
+| LoopUnrolling.cs:38:32:38:34 | "a" | LoopUnrolling.cs:38:18:38:46 | array creation of type String[] |
+| LoopUnrolling.cs:38:37:38:39 | "b" | LoopUnrolling.cs:38:32:38:34 | "a" |
+| LoopUnrolling.cs:38:42:38:44 | "c" | LoopUnrolling.cs:38:37:38:39 | "b" |
+| LoopUnrolling.cs:39:9:39:47 | ... ...; | LoopUnrolling.cs:38:13:38:46 | String[] xs = ... |
+| LoopUnrolling.cs:39:13:39:46 | String[] ys = ... | LoopUnrolling.cs:39:30:39:46 | { ..., ... } |
+| LoopUnrolling.cs:39:18:39:46 | array creation of type String[] | LoopUnrolling.cs:39:9:39:47 | ... ...; |
+| LoopUnrolling.cs:39:30:39:46 | { ..., ... } | LoopUnrolling.cs:39:42:39:44 | "2" |
+| LoopUnrolling.cs:39:32:39:34 | "0" | LoopUnrolling.cs:39:18:39:46 | array creation of type String[] |
+| LoopUnrolling.cs:39:37:39:39 | "1" | LoopUnrolling.cs:39:32:39:34 | "0" |
+| LoopUnrolling.cs:39:42:39:44 | "2" | LoopUnrolling.cs:39:37:39:39 | "1" |
+| LoopUnrolling.cs:40:9:42:41 | [unroll (line 40)] foreach (... ... in ...) ... | LoopUnrolling.cs:40:26:40:27 | access to local variable xs |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:40:9:42:41 | [unroll (line 40)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:40:26:40:27 | access to local variable xs | LoopUnrolling.cs:39:13:39:46 | String[] ys = ... |
+| LoopUnrolling.cs:41:13:42:41 | [unroll (line 41)] foreach (... ... in ...) ... | LoopUnrolling.cs:41:30:41:31 | access to local variable ys |
+| LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:42:17:42:40 | call to method WriteLine |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:41:13:42:41 | [unroll (line 41)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:41:30:41:31 | access to local variable ys | LoopUnrolling.cs:40:21:40:21 | String x |
+| LoopUnrolling.cs:42:17:42:40 | call to method WriteLine | LoopUnrolling.cs:42:35:42:39 | ... + ... |
+| LoopUnrolling.cs:42:17:42:41 | ...; | LoopUnrolling.cs:41:25:41:25 | String y |
+| LoopUnrolling.cs:42:35:42:35 | access to local variable x | LoopUnrolling.cs:42:17:42:41 | ...; |
+| LoopUnrolling.cs:42:35:42:39 | ... + ... | LoopUnrolling.cs:42:39:42:39 | access to local variable y |
+| LoopUnrolling.cs:42:39:42:39 | access to local variable y | LoopUnrolling.cs:42:35:42:35 | access to local variable x |
+| LoopUnrolling.cs:46:5:53:5 | {...} | LoopUnrolling.cs:45:10:45:11 | enter M6 |
+| LoopUnrolling.cs:47:9:47:47 | ... ...; | LoopUnrolling.cs:46:5:53:5 | {...} |
+| LoopUnrolling.cs:47:13:47:46 | String[] xs = ... | LoopUnrolling.cs:47:30:47:46 | { ..., ... } |
+| LoopUnrolling.cs:47:18:47:46 | array creation of type String[] | LoopUnrolling.cs:47:9:47:47 | ... ...; |
+| LoopUnrolling.cs:47:30:47:46 | { ..., ... } | LoopUnrolling.cs:47:42:47:44 | "c" |
+| LoopUnrolling.cs:47:32:47:34 | "a" | LoopUnrolling.cs:47:18:47:46 | array creation of type String[] |
+| LoopUnrolling.cs:47:37:47:39 | "b" | LoopUnrolling.cs:47:32:47:34 | "a" |
+| LoopUnrolling.cs:47:42:47:44 | "c" | LoopUnrolling.cs:47:37:47:39 | "b" |
+| LoopUnrolling.cs:48:9:52:9 | [unroll (line 48)] foreach (... ... in ...) ... | LoopUnrolling.cs:48:26:48:27 | access to local variable xs |
+| LoopUnrolling.cs:48:21:48:21 | String x | LoopUnrolling.cs:48:9:52:9 | [unroll (line 48)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:48:26:48:27 | access to local variable xs | LoopUnrolling.cs:47:13:47:46 | String[] xs = ... |
+| LoopUnrolling.cs:49:9:52:9 | {...} | LoopUnrolling.cs:48:21:48:21 | String x |
+| LoopUnrolling.cs:50:20:50:39 | call to method WriteLine | LoopUnrolling.cs:50:38:50:38 | access to local variable x |
+| LoopUnrolling.cs:50:20:50:40 | ...; | LoopUnrolling.cs:50:13:50:17 | Label: |
+| LoopUnrolling.cs:50:38:50:38 | access to local variable x | LoopUnrolling.cs:50:20:50:40 | ...; |
+| LoopUnrolling.cs:51:13:51:23 | goto ...; | LoopUnrolling.cs:50:20:50:39 | call to method WriteLine |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:58:9:64:9 | [b (line 55): false] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:58:9:64:9 | [b (line 55): true] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:56:5:65:5 | {...} | LoopUnrolling.cs:55:10:55:11 | enter M7 |
+| LoopUnrolling.cs:57:9:57:47 | ... ...; | LoopUnrolling.cs:56:5:65:5 | {...} |
+| LoopUnrolling.cs:57:13:57:46 | String[] xs = ... | LoopUnrolling.cs:57:30:57:46 | { ..., ... } |
+| LoopUnrolling.cs:57:18:57:46 | array creation of type String[] | LoopUnrolling.cs:57:9:57:47 | ... ...; |
+| LoopUnrolling.cs:57:30:57:46 | { ..., ... } | LoopUnrolling.cs:57:42:57:44 | "c" |
+| LoopUnrolling.cs:57:32:57:34 | "a" | LoopUnrolling.cs:57:18:57:46 | array creation of type String[] |
+| LoopUnrolling.cs:57:37:57:39 | "b" | LoopUnrolling.cs:57:32:57:34 | "a" |
+| LoopUnrolling.cs:57:42:57:44 | "c" | LoopUnrolling.cs:57:37:57:39 | "b" |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): false] foreach (... ... in ...) ... | LoopUnrolling.cs:62:17:62:17 | [b (line 55): false] access to parameter b |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): true] foreach (... ... in ...) ... | LoopUnrolling.cs:63:17:63:36 | [b (line 55): true] call to method WriteLine |
+| LoopUnrolling.cs:58:9:64:9 | [unroll (line 58)] foreach (... ... in ...) ... | LoopUnrolling.cs:58:26:58:27 | access to local variable xs |
+| LoopUnrolling.cs:58:21:58:21 | String x | LoopUnrolling.cs:58:9:64:9 | [unroll (line 58)] foreach (... ... in ...) ... |
+| LoopUnrolling.cs:58:26:58:27 | access to local variable xs | LoopUnrolling.cs:57:13:57:46 | String[] xs = ... |
+| LoopUnrolling.cs:59:9:64:9 | [b (line 55): false] {...} | LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x |
+| LoopUnrolling.cs:59:9:64:9 | [b (line 55): true] {...} | LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x |
+| LoopUnrolling.cs:59:9:64:9 | {...} | LoopUnrolling.cs:58:21:58:21 | String x |
+| LoopUnrolling.cs:60:13:61:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:59:9:64:9 | [b (line 55): false] {...} |
+| LoopUnrolling.cs:60:13:61:37 | [b (line 55): true] if (...) ... | LoopUnrolling.cs:59:9:64:9 | [b (line 55): true] {...} |
+| LoopUnrolling.cs:60:13:61:37 | if (...) ... | LoopUnrolling.cs:59:9:64:9 | {...} |
+| LoopUnrolling.cs:60:17:60:17 | [b (line 55): false] access to parameter b | LoopUnrolling.cs:60:13:61:37 | [b (line 55): false] if (...) ... |
+| LoopUnrolling.cs:60:17:60:17 | [b (line 55): true] access to parameter b | LoopUnrolling.cs:60:13:61:37 | [b (line 55): true] if (...) ... |
+| LoopUnrolling.cs:60:17:60:17 | access to parameter b | LoopUnrolling.cs:60:13:61:37 | if (...) ... |
+| LoopUnrolling.cs:61:17:61:36 | [b (line 55): true] call to method WriteLine | LoopUnrolling.cs:61:35:61:35 | [b (line 55): true] access to local variable x |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | LoopUnrolling.cs:60:17:60:17 | [b (line 55): true] access to parameter b |
+| LoopUnrolling.cs:61:35:61:35 | [b (line 55): true] access to local variable x | LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:60:17:60:17 | [b (line 55): false] access to parameter b |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): true] if (...) ... | LoopUnrolling.cs:61:17:61:36 | [b (line 55): true] call to method WriteLine |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): false] access to parameter b | LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): true] access to parameter b | LoopUnrolling.cs:62:13:63:37 | [b (line 55): true] if (...) ... |
+| LoopUnrolling.cs:63:17:63:36 | [b (line 55): true] call to method WriteLine | LoopUnrolling.cs:63:35:63:35 | [b (line 55): true] access to local variable x |
+| LoopUnrolling.cs:63:17:63:37 | [b (line 55): true] ...; | LoopUnrolling.cs:62:17:62:17 | [b (line 55): true] access to parameter b |
+| LoopUnrolling.cs:63:35:63:35 | [b (line 55): true] access to local variable x | LoopUnrolling.cs:63:17:63:37 | [b (line 55): true] ...; |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:70:13:70:19 | return ...; |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:68:5:74:5 | {...} | LoopUnrolling.cs:67:10:67:11 | enter M8 |
+| LoopUnrolling.cs:69:9:70:19 | if (...) ... | LoopUnrolling.cs:68:5:74:5 | {...} |
+| LoopUnrolling.cs:69:13:69:23 | !... | LoopUnrolling.cs:69:9:70:19 | if (...) ... |
+| LoopUnrolling.cs:69:14:69:17 | access to parameter args | LoopUnrolling.cs:69:13:69:23 | !... |
+| LoopUnrolling.cs:69:14:69:23 | call to method Any | LoopUnrolling.cs:69:14:69:17 | access to parameter args |
+| LoopUnrolling.cs:71:9:71:12 | access to parameter args | LoopUnrolling.cs:71:9:71:21 | ...; |
+| LoopUnrolling.cs:71:9:71:20 | call to method Clear | LoopUnrolling.cs:71:9:71:12 | access to parameter args |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:72:28:72:31 | access to parameter args |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:73:13:73:34 | call to method WriteLine |
+| LoopUnrolling.cs:72:28:72:31 | access to parameter args | LoopUnrolling.cs:71:9:71:20 | call to method Clear |
+| LoopUnrolling.cs:73:13:73:34 | call to method WriteLine | LoopUnrolling.cs:73:31:73:33 | access to local variable arg |
+| LoopUnrolling.cs:73:13:73:35 | ...; | LoopUnrolling.cs:72:21:72:23 | String arg |
+| LoopUnrolling.cs:73:31:73:33 | access to local variable arg | LoopUnrolling.cs:73:13:73:35 | ...; |
 | NullCoalescing.cs:3:9:3:10 | exit M1 | NullCoalescing.cs:3:23:3:23 | access to parameter i |
 | NullCoalescing.cs:3:9:3:10 | exit M1 | NullCoalescing.cs:3:28:3:28 | 0 |
 | NullCoalescing.cs:3:23:3:23 | access to parameter i | NullCoalescing.cs:3:23:3:28 | ... ?? ... |
@@ -5934,6 +6231,89 @@ blockDominance
 | Initializers.cs:29:9:29:11 | enter Sub | Initializers.cs:29:9:29:11 | enter Sub |
 | Initializers.cs:31:9:31:11 | enter Sub | Initializers.cs:31:9:31:11 | enter Sub |
 | Initializers.cs:33:9:33:11 | enter Sub | Initializers.cs:33:9:33:11 | enter Sub |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:7:10:7:11 | enter M1 |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:7:10:7:11 | exit M1 |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:10:13:10:19 | return ...; |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:11:21:11:23 | String arg |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:11:28:11:31 | access to parameter args |
+| LoopUnrolling.cs:7:10:7:11 | exit M1 | LoopUnrolling.cs:7:10:7:11 | exit M1 |
+| LoopUnrolling.cs:10:13:10:19 | return ...; | LoopUnrolling.cs:10:13:10:19 | return ...; |
+| LoopUnrolling.cs:11:21:11:23 | String arg | LoopUnrolling.cs:11:21:11:23 | String arg |
+| LoopUnrolling.cs:11:28:11:31 | access to parameter args | LoopUnrolling.cs:11:21:11:23 | String arg |
+| LoopUnrolling.cs:11:28:11:31 | access to parameter args | LoopUnrolling.cs:11:28:11:31 | access to parameter args |
+| LoopUnrolling.cs:15:10:15:11 | enter M2 | LoopUnrolling.cs:15:10:15:11 | enter M2 |
+| LoopUnrolling.cs:15:10:15:11 | enter M2 | LoopUnrolling.cs:15:10:15:11 | exit M2 |
+| LoopUnrolling.cs:15:10:15:11 | enter M2 | LoopUnrolling.cs:18:21:18:21 | String x |
+| LoopUnrolling.cs:15:10:15:11 | exit M2 | LoopUnrolling.cs:15:10:15:11 | exit M2 |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:15:10:15:11 | exit M2 |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:18:21:18:21 | String x |
+| LoopUnrolling.cs:22:10:22:11 | enter M3 | LoopUnrolling.cs:22:10:22:11 | enter M3 |
+| LoopUnrolling.cs:22:10:22:11 | enter M3 | LoopUnrolling.cs:22:10:22:11 | exit M3 |
+| LoopUnrolling.cs:22:10:22:11 | enter M3 | LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:22:10:22:11 | enter M3 | LoopUnrolling.cs:24:22:24:24 | Char arg |
+| LoopUnrolling.cs:22:10:22:11 | enter M3 | LoopUnrolling.cs:25:26:25:29 | Char arg0 |
+| LoopUnrolling.cs:22:10:22:11 | exit M3 | LoopUnrolling.cs:22:10:22:11 | exit M3 |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:22:10:22:11 | exit M3 |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:22:24:24 | Char arg |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:25:26:25:29 | Char arg0 |
+| LoopUnrolling.cs:24:22:24:24 | Char arg | LoopUnrolling.cs:24:22:24:24 | Char arg |
+| LoopUnrolling.cs:24:22:24:24 | Char arg | LoopUnrolling.cs:25:26:25:29 | Char arg0 |
+| LoopUnrolling.cs:25:26:25:29 | Char arg0 | LoopUnrolling.cs:25:26:25:29 | Char arg0 |
+| LoopUnrolling.cs:29:10:29:11 | enter M4 | LoopUnrolling.cs:29:10:29:11 | enter M4 |
+| LoopUnrolling.cs:29:10:29:11 | enter M4 | LoopUnrolling.cs:29:10:29:11 | exit M4 |
+| LoopUnrolling.cs:29:10:29:11 | enter M4 | LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:29:10:29:11 | enter M4 | LoopUnrolling.cs:32:21:32:21 | String x |
+| LoopUnrolling.cs:29:10:29:11 | exit M4 | LoopUnrolling.cs:29:10:29:11 | exit M4 |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:29:10:29:11 | exit M4 |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:32:21:32:21 | String x |
+| LoopUnrolling.cs:32:21:32:21 | String x | LoopUnrolling.cs:32:21:32:21 | String x |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:36:10:36:11 | enter M5 |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:36:10:36:11 | exit M5 |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:40:21:40:21 | String x |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:41:25:41:25 | String y |
+| LoopUnrolling.cs:36:10:36:11 | exit M5 | LoopUnrolling.cs:36:10:36:11 | exit M5 |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:36:10:36:11 | exit M5 |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:36:10:36:11 | exit M5 |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:40:21:40:21 | String x |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:41:25:41:25 | String y |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:36:10:36:11 | exit M5 |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:41:25:41:25 | String y |
+| LoopUnrolling.cs:45:10:45:11 | enter M6 | LoopUnrolling.cs:45:10:45:11 | enter M6 |
+| LoopUnrolling.cs:45:10:45:11 | enter M6 | LoopUnrolling.cs:50:13:50:17 | Label: |
+| LoopUnrolling.cs:50:13:50:17 | Label: | LoopUnrolling.cs:50:13:50:17 | Label: |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:55:10:55:11 | enter M7 |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:55:10:55:11 | exit M7 |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:55:10:55:11 | exit M7 |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x | LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x | LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:67:10:67:11 | enter M8 |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:67:10:67:11 | exit M8 |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:70:13:70:19 | return ...; |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:71:9:71:21 | ...; |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:72:21:72:23 | String arg |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:67:10:67:11 | exit M8 |
+| LoopUnrolling.cs:70:13:70:19 | return ...; | LoopUnrolling.cs:70:13:70:19 | return ...; |
+| LoopUnrolling.cs:71:9:71:21 | ...; | LoopUnrolling.cs:71:9:71:21 | ...; |
+| LoopUnrolling.cs:71:9:71:21 | ...; | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:71:9:71:21 | ...; | LoopUnrolling.cs:72:21:72:23 | String arg |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:72:21:72:23 | String arg |
+| LoopUnrolling.cs:72:21:72:23 | String arg | LoopUnrolling.cs:72:21:72:23 | String arg |
 | NullCoalescing.cs:3:9:3:10 | enter M1 | NullCoalescing.cs:3:9:3:10 | enter M1 |
 | NullCoalescing.cs:3:9:3:10 | enter M1 | NullCoalescing.cs:3:9:3:10 | exit M1 |
 | NullCoalescing.cs:3:9:3:10 | enter M1 | NullCoalescing.cs:3:28:3:28 | 0 |
@@ -8030,6 +8410,87 @@ postBlockDominance
 | Initializers.cs:29:9:29:11 | enter Sub | Initializers.cs:29:9:29:11 | enter Sub |
 | Initializers.cs:31:9:31:11 | enter Sub | Initializers.cs:31:9:31:11 | enter Sub |
 | Initializers.cs:33:9:33:11 | enter Sub | Initializers.cs:33:9:33:11 | enter Sub |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:7:10:7:11 | enter M1 |
+| LoopUnrolling.cs:7:10:7:11 | exit M1 | LoopUnrolling.cs:7:10:7:11 | enter M1 |
+| LoopUnrolling.cs:7:10:7:11 | exit M1 | LoopUnrolling.cs:7:10:7:11 | exit M1 |
+| LoopUnrolling.cs:7:10:7:11 | exit M1 | LoopUnrolling.cs:10:13:10:19 | return ...; |
+| LoopUnrolling.cs:7:10:7:11 | exit M1 | LoopUnrolling.cs:11:21:11:23 | String arg |
+| LoopUnrolling.cs:7:10:7:11 | exit M1 | LoopUnrolling.cs:11:28:11:31 | access to parameter args |
+| LoopUnrolling.cs:10:13:10:19 | return ...; | LoopUnrolling.cs:10:13:10:19 | return ...; |
+| LoopUnrolling.cs:11:21:11:23 | String arg | LoopUnrolling.cs:11:21:11:23 | String arg |
+| LoopUnrolling.cs:11:21:11:23 | String arg | LoopUnrolling.cs:11:28:11:31 | access to parameter args |
+| LoopUnrolling.cs:11:28:11:31 | access to parameter args | LoopUnrolling.cs:11:28:11:31 | access to parameter args |
+| LoopUnrolling.cs:15:10:15:11 | enter M2 | LoopUnrolling.cs:15:10:15:11 | enter M2 |
+| LoopUnrolling.cs:15:10:15:11 | exit M2 | LoopUnrolling.cs:15:10:15:11 | enter M2 |
+| LoopUnrolling.cs:15:10:15:11 | exit M2 | LoopUnrolling.cs:15:10:15:11 | exit M2 |
+| LoopUnrolling.cs:15:10:15:11 | exit M2 | LoopUnrolling.cs:18:21:18:21 | String x |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:15:10:15:11 | enter M2 |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:18:21:18:21 | String x |
+| LoopUnrolling.cs:22:10:22:11 | enter M3 | LoopUnrolling.cs:22:10:22:11 | enter M3 |
+| LoopUnrolling.cs:22:10:22:11 | exit M3 | LoopUnrolling.cs:22:10:22:11 | enter M3 |
+| LoopUnrolling.cs:22:10:22:11 | exit M3 | LoopUnrolling.cs:22:10:22:11 | exit M3 |
+| LoopUnrolling.cs:22:10:22:11 | exit M3 | LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:22:10:22:11 | exit M3 | LoopUnrolling.cs:24:22:24:24 | Char arg |
+| LoopUnrolling.cs:22:10:22:11 | exit M3 | LoopUnrolling.cs:25:26:25:29 | Char arg0 |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:22:10:22:11 | enter M3 |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:22:24:24 | Char arg |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:25:26:25:29 | Char arg0 |
+| LoopUnrolling.cs:24:22:24:24 | Char arg | LoopUnrolling.cs:24:22:24:24 | Char arg |
+| LoopUnrolling.cs:25:26:25:29 | Char arg0 | LoopUnrolling.cs:24:22:24:24 | Char arg |
+| LoopUnrolling.cs:25:26:25:29 | Char arg0 | LoopUnrolling.cs:25:26:25:29 | Char arg0 |
+| LoopUnrolling.cs:29:10:29:11 | enter M4 | LoopUnrolling.cs:29:10:29:11 | enter M4 |
+| LoopUnrolling.cs:29:10:29:11 | exit M4 | LoopUnrolling.cs:29:10:29:11 | enter M4 |
+| LoopUnrolling.cs:29:10:29:11 | exit M4 | LoopUnrolling.cs:29:10:29:11 | exit M4 |
+| LoopUnrolling.cs:29:10:29:11 | exit M4 | LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:29:10:29:11 | exit M4 | LoopUnrolling.cs:32:21:32:21 | String x |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:29:10:29:11 | enter M4 |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:32:21:32:21 | String x |
+| LoopUnrolling.cs:32:21:32:21 | String x | LoopUnrolling.cs:32:21:32:21 | String x |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:36:10:36:11 | enter M5 |
+| LoopUnrolling.cs:36:10:36:11 | exit M5 | LoopUnrolling.cs:36:10:36:11 | enter M5 |
+| LoopUnrolling.cs:36:10:36:11 | exit M5 | LoopUnrolling.cs:36:10:36:11 | exit M5 |
+| LoopUnrolling.cs:36:10:36:11 | exit M5 | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:36:10:36:11 | exit M5 | LoopUnrolling.cs:40:21:40:21 | String x |
+| LoopUnrolling.cs:36:10:36:11 | exit M5 | LoopUnrolling.cs:41:25:41:25 | String y |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:36:10:36:11 | enter M5 |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:40:21:40:21 | String x |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:41:25:41:25 | String y |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:36:10:36:11 | enter M5 |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:40:21:40:21 | String x |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:36:10:36:11 | enter M5 |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:40:21:40:21 | String x |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:41:25:41:25 | String y |
+| LoopUnrolling.cs:45:10:45:11 | enter M6 | LoopUnrolling.cs:45:10:45:11 | enter M6 |
+| LoopUnrolling.cs:50:13:50:17 | Label: | LoopUnrolling.cs:50:13:50:17 | Label: |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:55:10:55:11 | enter M7 |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:55:10:55:11 | enter M7 |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:55:10:55:11 | exit M7 |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x | LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x | LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:67:10:67:11 | enter M8 |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:67:10:67:11 | enter M8 |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:67:10:67:11 | exit M8 |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:70:13:70:19 | return ...; |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:71:9:71:21 | ...; |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:72:21:72:23 | String arg |
+| LoopUnrolling.cs:70:13:70:19 | return ...; | LoopUnrolling.cs:70:13:70:19 | return ...; |
+| LoopUnrolling.cs:71:9:71:21 | ...; | LoopUnrolling.cs:71:9:71:21 | ...; |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:71:9:71:21 | ...; |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:72:21:72:23 | String arg |
+| LoopUnrolling.cs:72:21:72:23 | String arg | LoopUnrolling.cs:72:21:72:23 | String arg |
 | NullCoalescing.cs:3:9:3:10 | enter M1 | NullCoalescing.cs:3:9:3:10 | enter M1 |
 | NullCoalescing.cs:3:9:3:10 | exit M1 | NullCoalescing.cs:3:9:3:10 | enter M1 |
 | NullCoalescing.cs:3:9:3:10 | exit M1 | NullCoalescing.cs:3:9:3:10 | exit M1 |
--- a/csharp/ql/test/library-tests/controlflow/graph/EnclosingCallable.expected
+++ b/csharp/ql/test/library-tests/controlflow/graph/EnclosingCallable.expected
@@ -1428,6 +1428,166 @@ nodeEnclosing
 | Initializers.cs:33:33:33:33 | access to parameter i | Initializers.cs:33:9:33:11 | Sub |
 | Initializers.cs:33:33:33:37 | ... + ... | Initializers.cs:33:9:33:11 | Sub |
 | Initializers.cs:33:37:33:37 | access to parameter j | Initializers.cs:33:9:33:11 | Sub |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:7:10:7:11 | exit M1 | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:8:5:13:5 | {...} | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:9:9:10:19 | if (...) ... | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:9:13:9:16 | access to parameter args | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:9:13:9:23 | access to property Length | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:9:13:9:28 | ... == ... | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:9:28:9:28 | 0 | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:10:13:10:19 | return ...; | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:11:9:12:35 | [unroll (line 11)] foreach (... ... in ...) ... | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:11:21:11:23 | String arg | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:11:28:11:31 | access to parameter args | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:12:13:12:34 | call to method WriteLine | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:12:13:12:35 | ...; | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:12:31:12:33 | access to local variable arg | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:15:10:15:11 | enter M2 | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:15:10:15:11 | exit M2 | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:16:5:20:5 | {...} | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:17:9:17:47 | ... ...; | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:17:13:17:46 | String[] xs = ... | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:17:18:17:46 | array creation of type String[] | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:17:30:17:46 | { ..., ... } | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:17:32:17:34 | "a" | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:17:37:17:39 | "b" | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:17:42:17:44 | "c" | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:18:9:19:33 | [unroll (line 18)] foreach (... ... in ...) ... | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:18:26:18:27 | access to local variable xs | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:19:13:19:32 | call to method WriteLine | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:19:13:19:33 | ...; | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:19:31:19:31 | access to local variable x | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:22:10:22:11 | enter M3 | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:22:10:22:11 | exit M3 | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:23:5:27:5 | {...} | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:24:22:24:24 | Char arg | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:24:29:24:32 | access to parameter args | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:25:13:26:40 | [unroll (line 25)] foreach (... ... in ...) ... | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:25:13:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:25:26:25:29 | Char arg0 | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:25:34:25:37 | access to parameter args | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:26:17:26:39 | call to method WriteLine | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:26:17:26:40 | ...; | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:29:10:29:11 | enter M4 | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:29:10:29:11 | exit M4 | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:30:5:34:5 | {...} | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:31:9:31:31 | ... ...; | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:31:13:31:30 | String[] xs = ... | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:31:18:31:30 | array creation of type String[] | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:31:29:31:29 | 0 | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:32:21:32:21 | String x | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:32:26:32:27 | access to local variable xs | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:33:13:33:32 | call to method WriteLine | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:33:13:33:33 | ...; | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:33:31:33:31 | access to local variable x | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:36:10:36:11 | exit M5 | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:37:5:43:5 | {...} | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:38:9:38:47 | ... ...; | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:38:13:38:46 | String[] xs = ... | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:38:18:38:46 | array creation of type String[] | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:38:30:38:46 | { ..., ... } | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:38:32:38:34 | "a" | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:38:37:38:39 | "b" | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:38:42:38:44 | "c" | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:39:9:39:47 | ... ...; | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:39:13:39:46 | String[] ys = ... | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:39:18:39:46 | array creation of type String[] | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:39:30:39:46 | { ..., ... } | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:39:32:39:34 | "0" | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:39:37:39:39 | "1" | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:39:42:39:44 | "2" | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:40:9:42:41 | [unroll (line 40)] foreach (... ... in ...) ... | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:40:26:40:27 | access to local variable xs | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:41:13:42:41 | [unroll (line 41)] foreach (... ... in ...) ... | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:41:30:41:31 | access to local variable ys | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:42:17:42:40 | call to method WriteLine | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:42:17:42:41 | ...; | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:42:35:42:35 | access to local variable x | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:42:35:42:39 | ... + ... | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:42:39:42:39 | access to local variable y | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:45:10:45:11 | enter M6 | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:46:5:53:5 | {...} | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:47:9:47:47 | ... ...; | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:47:13:47:46 | String[] xs = ... | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:47:18:47:46 | array creation of type String[] | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:47:30:47:46 | { ..., ... } | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:47:32:47:34 | "a" | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:47:37:47:39 | "b" | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:47:42:47:44 | "c" | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:48:9:52:9 | [unroll (line 48)] foreach (... ... in ...) ... | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:48:21:48:21 | String x | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:48:26:48:27 | access to local variable xs | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:49:9:52:9 | {...} | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:50:13:50:17 | Label: | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:50:20:50:39 | call to method WriteLine | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:50:20:50:40 | ...; | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:50:38:50:38 | access to local variable x | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:51:13:51:23 | goto ...; | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:56:5:65:5 | {...} | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:57:9:57:47 | ... ...; | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:57:13:57:46 | String[] xs = ... | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:57:18:57:46 | array creation of type String[] | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:57:30:57:46 | { ..., ... } | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:57:32:57:34 | "a" | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:57:37:57:39 | "b" | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:57:42:57:44 | "c" | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): false] foreach (... ... in ...) ... | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): true] foreach (... ... in ...) ... | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:58:9:64:9 | [unroll (line 58)] foreach (... ... in ...) ... | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:58:21:58:21 | String x | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:58:26:58:27 | access to local variable xs | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:59:9:64:9 | [b (line 55): false] {...} | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:59:9:64:9 | [b (line 55): true] {...} | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:59:9:64:9 | {...} | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:60:13:61:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:60:13:61:37 | [b (line 55): true] if (...) ... | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:60:13:61:37 | if (...) ... | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:60:17:60:17 | [b (line 55): false] access to parameter b | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:60:17:60:17 | [b (line 55): true] access to parameter b | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:60:17:60:17 | access to parameter b | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:61:17:61:36 | [b (line 55): true] call to method WriteLine | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:61:35:61:35 | [b (line 55): true] access to local variable x | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): true] if (...) ... | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): false] access to parameter b | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): true] access to parameter b | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:63:17:63:36 | [b (line 55): true] call to method WriteLine | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:63:17:63:37 | [b (line 55): true] ...; | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:63:35:63:35 | [b (line 55): true] access to local variable x | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:68:5:74:5 | {...} | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:69:9:70:19 | if (...) ... | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:69:13:69:23 | !... | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:69:14:69:17 | access to parameter args | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:69:14:69:23 | call to method Any | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:70:13:70:19 | return ...; | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:71:9:71:12 | access to parameter args | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:71:9:71:20 | call to method Clear | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:71:9:71:21 | ...; | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:72:21:72:23 | String arg | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:72:28:72:31 | access to parameter args | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:73:13:73:34 | call to method WriteLine | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:73:13:73:35 | ...; | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:73:31:73:33 | access to local variable arg | LoopUnrolling.cs:67:10:67:11 | M8 |
 | NullCoalescing.cs:3:9:3:10 | enter M1 | NullCoalescing.cs:3:9:3:10 | M1 |
 | NullCoalescing.cs:3:9:3:10 | exit M1 | NullCoalescing.cs:3:9:3:10 | M1 |
 | NullCoalescing.cs:3:23:3:23 | access to parameter i | NullCoalescing.cs:3:9:3:10 | M1 |
@@ -3150,6 +3310,42 @@ blockEnclosing
 | Initializers.cs:29:9:29:11 | enter Sub | Initializers.cs:29:9:29:11 | Sub |
 | Initializers.cs:31:9:31:11 | enter Sub | Initializers.cs:31:9:31:11 | Sub |
 | Initializers.cs:33:9:33:11 | enter Sub | Initializers.cs:33:9:33:11 | Sub |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:7:10:7:11 | exit M1 | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:10:13:10:19 | return ...; | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:11:21:11:23 | String arg | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:11:28:11:31 | access to parameter args | LoopUnrolling.cs:7:10:7:11 | M1 |
+| LoopUnrolling.cs:15:10:15:11 | enter M2 | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:15:10:15:11 | exit M2 | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:15:10:15:11 | M2 |
+| LoopUnrolling.cs:22:10:22:11 | enter M3 | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:22:10:22:11 | exit M3 | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:24:22:24:24 | Char arg | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:25:26:25:29 | Char arg0 | LoopUnrolling.cs:22:10:22:11 | M3 |
+| LoopUnrolling.cs:29:10:29:11 | enter M4 | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:29:10:29:11 | exit M4 | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:32:21:32:21 | String x | LoopUnrolling.cs:29:10:29:11 | M4 |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:36:10:36:11 | exit M5 | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:36:10:36:11 | M5 |
+| LoopUnrolling.cs:45:10:45:11 | enter M6 | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:50:13:50:17 | Label: | LoopUnrolling.cs:45:10:45:11 | M6 |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:55:10:55:11 | exit M7 | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:55:10:55:11 | M7 |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:67:10:67:11 | exit M8 | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:70:13:70:19 | return ...; | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:71:9:71:21 | ...; | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:67:10:67:11 | M8 |
+| LoopUnrolling.cs:72:21:72:23 | String arg | LoopUnrolling.cs:67:10:67:11 | M8 |
 | NullCoalescing.cs:3:9:3:10 | enter M1 | NullCoalescing.cs:3:9:3:10 | M1 |
 | NullCoalescing.cs:3:9:3:10 | exit M1 | NullCoalescing.cs:3:9:3:10 | M1 |
 | NullCoalescing.cs:3:28:3:28 | 0 | NullCoalescing.cs:3:9:3:10 | M1 |
--- a/csharp/ql/test/library-tests/controlflow/graph/EntryElement.expected
+++ b/csharp/ql/test/library-tests/controlflow/graph/EntryElement.expected
@@ -1075,6 +1075,139 @@
 | Initializers.cs:33:33:33:33 | access to parameter i | Initializers.cs:33:33:33:33 | access to parameter i |
 | Initializers.cs:33:33:33:37 | ... + ... | Initializers.cs:33:33:33:33 | access to parameter i |
 | Initializers.cs:33:37:33:37 | access to parameter j | Initializers.cs:33:37:33:37 | access to parameter j |
+| LoopUnrolling.cs:8:5:13:5 | {...} | LoopUnrolling.cs:8:5:13:5 | {...} |
+| LoopUnrolling.cs:9:9:10:19 | if (...) ... | LoopUnrolling.cs:9:9:10:19 | if (...) ... |
+| LoopUnrolling.cs:9:13:9:16 | access to parameter args | LoopUnrolling.cs:9:13:9:16 | access to parameter args |
+| LoopUnrolling.cs:9:13:9:23 | access to property Length | LoopUnrolling.cs:9:13:9:16 | access to parameter args |
+| LoopUnrolling.cs:9:13:9:28 | ... == ... | LoopUnrolling.cs:9:13:9:16 | access to parameter args |
+| LoopUnrolling.cs:9:28:9:28 | 0 | LoopUnrolling.cs:9:28:9:28 | 0 |
+| LoopUnrolling.cs:10:13:10:19 | return ...; | LoopUnrolling.cs:10:13:10:19 | return ...; |
+| LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:11:28:11:31 | access to parameter args |
+| LoopUnrolling.cs:11:21:11:23 | String arg | LoopUnrolling.cs:11:21:11:23 | String arg |
+| LoopUnrolling.cs:11:28:11:31 | access to parameter args | LoopUnrolling.cs:11:28:11:31 | access to parameter args |
+| LoopUnrolling.cs:12:13:12:34 | call to method WriteLine | LoopUnrolling.cs:12:31:12:33 | access to local variable arg |
+| LoopUnrolling.cs:12:13:12:35 | ...; | LoopUnrolling.cs:12:13:12:35 | ...; |
+| LoopUnrolling.cs:12:31:12:33 | access to local variable arg | LoopUnrolling.cs:12:31:12:33 | access to local variable arg |
+| LoopUnrolling.cs:16:5:20:5 | {...} | LoopUnrolling.cs:16:5:20:5 | {...} |
+| LoopUnrolling.cs:17:9:17:47 | ... ...; | LoopUnrolling.cs:17:9:17:47 | ... ...; |
+| LoopUnrolling.cs:17:13:17:46 | String[] xs = ... | LoopUnrolling.cs:17:18:17:46 | array creation of type String[] |
+| LoopUnrolling.cs:17:18:17:46 | 3 | LoopUnrolling.cs:17:18:17:46 | 3 |
+| LoopUnrolling.cs:17:18:17:46 | array creation of type String[] | LoopUnrolling.cs:17:18:17:46 | array creation of type String[] |
+| LoopUnrolling.cs:17:30:17:46 | { ..., ... } | LoopUnrolling.cs:17:32:17:34 | "a" |
+| LoopUnrolling.cs:17:32:17:34 | "a" | LoopUnrolling.cs:17:32:17:34 | "a" |
+| LoopUnrolling.cs:17:37:17:39 | "b" | LoopUnrolling.cs:17:37:17:39 | "b" |
+| LoopUnrolling.cs:17:42:17:44 | "c" | LoopUnrolling.cs:17:42:17:44 | "c" |
+| LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:18:26:18:27 | access to local variable xs |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:18:21:18:21 | String x |
+| LoopUnrolling.cs:18:26:18:27 | access to local variable xs | LoopUnrolling.cs:18:26:18:27 | access to local variable xs |
+| LoopUnrolling.cs:19:13:19:32 | call to method WriteLine | LoopUnrolling.cs:19:31:19:31 | access to local variable x |
+| LoopUnrolling.cs:19:13:19:33 | ...; | LoopUnrolling.cs:19:13:19:33 | ...; |
+| LoopUnrolling.cs:19:31:19:31 | access to local variable x | LoopUnrolling.cs:19:31:19:31 | access to local variable x |
+| LoopUnrolling.cs:23:5:27:5 | {...} | LoopUnrolling.cs:23:5:27:5 | {...} |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:29:24:32 | access to parameter args |
+| LoopUnrolling.cs:24:22:24:24 | Char arg | LoopUnrolling.cs:24:22:24:24 | Char arg |
+| LoopUnrolling.cs:24:29:24:32 | access to parameter args | LoopUnrolling.cs:24:29:24:32 | access to parameter args |
+| LoopUnrolling.cs:25:13:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:25:34:25:37 | access to parameter args |
+| LoopUnrolling.cs:25:26:25:29 | Char arg0 | LoopUnrolling.cs:25:26:25:29 | Char arg0 |
+| LoopUnrolling.cs:25:34:25:37 | access to parameter args | LoopUnrolling.cs:25:34:25:37 | access to parameter args |
+| LoopUnrolling.cs:26:17:26:39 | call to method WriteLine | LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 |
+| LoopUnrolling.cs:26:17:26:40 | ...; | LoopUnrolling.cs:26:17:26:40 | ...; |
+| LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 | LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 |
+| LoopUnrolling.cs:30:5:34:5 | {...} | LoopUnrolling.cs:30:5:34:5 | {...} |
+| LoopUnrolling.cs:31:9:31:31 | ... ...; | LoopUnrolling.cs:31:9:31:31 | ... ...; |
+| LoopUnrolling.cs:31:13:31:30 | String[] xs = ... | LoopUnrolling.cs:31:29:31:29 | 0 |
+| LoopUnrolling.cs:31:18:31:30 | array creation of type String[] | LoopUnrolling.cs:31:29:31:29 | 0 |
+| LoopUnrolling.cs:31:29:31:29 | 0 | LoopUnrolling.cs:31:29:31:29 | 0 |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:32:26:32:27 | access to local variable xs |
+| LoopUnrolling.cs:32:21:32:21 | String x | LoopUnrolling.cs:32:21:32:21 | String x |
+| LoopUnrolling.cs:32:26:32:27 | access to local variable xs | LoopUnrolling.cs:32:26:32:27 | access to local variable xs |
+| LoopUnrolling.cs:33:13:33:32 | call to method WriteLine | LoopUnrolling.cs:33:31:33:31 | access to local variable x |
+| LoopUnrolling.cs:33:13:33:33 | ...; | LoopUnrolling.cs:33:13:33:33 | ...; |
+| LoopUnrolling.cs:33:31:33:31 | access to local variable x | LoopUnrolling.cs:33:31:33:31 | access to local variable x |
+| LoopUnrolling.cs:37:5:43:5 | {...} | LoopUnrolling.cs:37:5:43:5 | {...} |
+| LoopUnrolling.cs:38:9:38:47 | ... ...; | LoopUnrolling.cs:38:9:38:47 | ... ...; |
+| LoopUnrolling.cs:38:13:38:46 | String[] xs = ... | LoopUnrolling.cs:38:18:38:46 | array creation of type String[] |
+| LoopUnrolling.cs:38:18:38:46 | 3 | LoopUnrolling.cs:38:18:38:46 | 3 |
+| LoopUnrolling.cs:38:18:38:46 | array creation of type String[] | LoopUnrolling.cs:38:18:38:46 | array creation of type String[] |
+| LoopUnrolling.cs:38:30:38:46 | { ..., ... } | LoopUnrolling.cs:38:32:38:34 | "a" |
+| LoopUnrolling.cs:38:32:38:34 | "a" | LoopUnrolling.cs:38:32:38:34 | "a" |
+| LoopUnrolling.cs:38:37:38:39 | "b" | LoopUnrolling.cs:38:37:38:39 | "b" |
+| LoopUnrolling.cs:38:42:38:44 | "c" | LoopUnrolling.cs:38:42:38:44 | "c" |
+| LoopUnrolling.cs:39:9:39:47 | ... ...; | LoopUnrolling.cs:39:9:39:47 | ... ...; |
+| LoopUnrolling.cs:39:13:39:46 | String[] ys = ... | LoopUnrolling.cs:39:18:39:46 | array creation of type String[] |
+| LoopUnrolling.cs:39:18:39:46 | 3 | LoopUnrolling.cs:39:18:39:46 | 3 |
+| LoopUnrolling.cs:39:18:39:46 | array creation of type String[] | LoopUnrolling.cs:39:18:39:46 | array creation of type String[] |
+| LoopUnrolling.cs:39:30:39:46 | { ..., ... } | LoopUnrolling.cs:39:32:39:34 | "0" |
+| LoopUnrolling.cs:39:32:39:34 | "0" | LoopUnrolling.cs:39:32:39:34 | "0" |
+| LoopUnrolling.cs:39:37:39:39 | "1" | LoopUnrolling.cs:39:37:39:39 | "1" |
+| LoopUnrolling.cs:39:42:39:44 | "2" | LoopUnrolling.cs:39:42:39:44 | "2" |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:40:26:40:27 | access to local variable xs |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:40:21:40:21 | String x |
+| LoopUnrolling.cs:40:26:40:27 | access to local variable xs | LoopUnrolling.cs:40:26:40:27 | access to local variable xs |
+| LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:41:30:41:31 | access to local variable ys |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:41:25:41:25 | String y |
+| LoopUnrolling.cs:41:30:41:31 | access to local variable ys | LoopUnrolling.cs:41:30:41:31 | access to local variable ys |
+| LoopUnrolling.cs:42:17:42:40 | call to method WriteLine | LoopUnrolling.cs:42:35:42:35 | access to local variable x |
+| LoopUnrolling.cs:42:17:42:41 | ...; | LoopUnrolling.cs:42:17:42:41 | ...; |
+| LoopUnrolling.cs:42:35:42:35 | access to local variable x | LoopUnrolling.cs:42:35:42:35 | access to local variable x |
+| LoopUnrolling.cs:42:35:42:39 | ... + ... | LoopUnrolling.cs:42:35:42:35 | access to local variable x |
+| LoopUnrolling.cs:42:39:42:39 | access to local variable y | LoopUnrolling.cs:42:39:42:39 | access to local variable y |
+| LoopUnrolling.cs:46:5:53:5 | {...} | LoopUnrolling.cs:46:5:53:5 | {...} |
+| LoopUnrolling.cs:47:9:47:47 | ... ...; | LoopUnrolling.cs:47:9:47:47 | ... ...; |
+| LoopUnrolling.cs:47:13:47:46 | String[] xs = ... | LoopUnrolling.cs:47:18:47:46 | array creation of type String[] |
+| LoopUnrolling.cs:47:18:47:46 | 3 | LoopUnrolling.cs:47:18:47:46 | 3 |
+| LoopUnrolling.cs:47:18:47:46 | array creation of type String[] | LoopUnrolling.cs:47:18:47:46 | array creation of type String[] |
+| LoopUnrolling.cs:47:30:47:46 | { ..., ... } | LoopUnrolling.cs:47:32:47:34 | "a" |
+| LoopUnrolling.cs:47:32:47:34 | "a" | LoopUnrolling.cs:47:32:47:34 | "a" |
+| LoopUnrolling.cs:47:37:47:39 | "b" | LoopUnrolling.cs:47:37:47:39 | "b" |
+| LoopUnrolling.cs:47:42:47:44 | "c" | LoopUnrolling.cs:47:42:47:44 | "c" |
+| LoopUnrolling.cs:48:9:52:9 | foreach (... ... in ...) ... | LoopUnrolling.cs:48:26:48:27 | access to local variable xs |
+| LoopUnrolling.cs:48:21:48:21 | String x | LoopUnrolling.cs:48:21:48:21 | String x |
+| LoopUnrolling.cs:48:26:48:27 | access to local variable xs | LoopUnrolling.cs:48:26:48:27 | access to local variable xs |
+| LoopUnrolling.cs:49:9:52:9 | {...} | LoopUnrolling.cs:49:9:52:9 | {...} |
+| LoopUnrolling.cs:50:13:50:17 | Label: | LoopUnrolling.cs:50:13:50:17 | Label: |
+| LoopUnrolling.cs:50:20:50:39 | call to method WriteLine | LoopUnrolling.cs:50:38:50:38 | access to local variable x |
+| LoopUnrolling.cs:50:20:50:40 | ...; | LoopUnrolling.cs:50:20:50:40 | ...; |
+| LoopUnrolling.cs:50:38:50:38 | access to local variable x | LoopUnrolling.cs:50:38:50:38 | access to local variable x |
+| LoopUnrolling.cs:51:13:51:23 | goto ...; | LoopUnrolling.cs:51:13:51:23 | goto ...; |
+| LoopUnrolling.cs:56:5:65:5 | {...} | LoopUnrolling.cs:56:5:65:5 | {...} |
+| LoopUnrolling.cs:57:9:57:47 | ... ...; | LoopUnrolling.cs:57:9:57:47 | ... ...; |
+| LoopUnrolling.cs:57:13:57:46 | String[] xs = ... | LoopUnrolling.cs:57:18:57:46 | array creation of type String[] |
+| LoopUnrolling.cs:57:18:57:46 | 3 | LoopUnrolling.cs:57:18:57:46 | 3 |
+| LoopUnrolling.cs:57:18:57:46 | array creation of type String[] | LoopUnrolling.cs:57:18:57:46 | array creation of type String[] |
+| LoopUnrolling.cs:57:30:57:46 | { ..., ... } | LoopUnrolling.cs:57:32:57:34 | "a" |
+| LoopUnrolling.cs:57:32:57:34 | "a" | LoopUnrolling.cs:57:32:57:34 | "a" |
+| LoopUnrolling.cs:57:37:57:39 | "b" | LoopUnrolling.cs:57:37:57:39 | "b" |
+| LoopUnrolling.cs:57:42:57:44 | "c" | LoopUnrolling.cs:57:42:57:44 | "c" |
+| LoopUnrolling.cs:58:9:64:9 | foreach (... ... in ...) ... | LoopUnrolling.cs:58:26:58:27 | access to local variable xs |
+| LoopUnrolling.cs:58:21:58:21 | String x | LoopUnrolling.cs:58:21:58:21 | String x |
+| LoopUnrolling.cs:58:26:58:27 | access to local variable xs | LoopUnrolling.cs:58:26:58:27 | access to local variable xs |
+| LoopUnrolling.cs:59:9:64:9 | {...} | LoopUnrolling.cs:59:9:64:9 | {...} |
+| LoopUnrolling.cs:60:13:61:37 | if (...) ... | LoopUnrolling.cs:60:13:61:37 | if (...) ... |
+| LoopUnrolling.cs:60:17:60:17 | access to parameter b | LoopUnrolling.cs:60:17:60:17 | access to parameter b |
+| LoopUnrolling.cs:61:17:61:36 | call to method WriteLine | LoopUnrolling.cs:61:35:61:35 | access to local variable x |
+| LoopUnrolling.cs:61:17:61:37 | ...; | LoopUnrolling.cs:61:17:61:37 | ...; |
+| LoopUnrolling.cs:61:35:61:35 | access to local variable x | LoopUnrolling.cs:61:35:61:35 | access to local variable x |
+| LoopUnrolling.cs:62:13:63:37 | if (...) ... | LoopUnrolling.cs:62:13:63:37 | if (...) ... |
+| LoopUnrolling.cs:62:17:62:17 | access to parameter b | LoopUnrolling.cs:62:17:62:17 | access to parameter b |
+| LoopUnrolling.cs:63:17:63:36 | call to method WriteLine | LoopUnrolling.cs:63:35:63:35 | access to local variable x |
+| LoopUnrolling.cs:63:17:63:37 | ...; | LoopUnrolling.cs:63:17:63:37 | ...; |
+| LoopUnrolling.cs:63:35:63:35 | access to local variable x | LoopUnrolling.cs:63:35:63:35 | access to local variable x |
+| LoopUnrolling.cs:68:5:74:5 | {...} | LoopUnrolling.cs:68:5:74:5 | {...} |
+| LoopUnrolling.cs:69:9:70:19 | if (...) ... | LoopUnrolling.cs:69:9:70:19 | if (...) ... |
+| LoopUnrolling.cs:69:13:69:23 | !... | LoopUnrolling.cs:69:13:69:23 | !... |
+| LoopUnrolling.cs:69:14:69:17 | access to parameter args | LoopUnrolling.cs:69:14:69:17 | access to parameter args |
+| LoopUnrolling.cs:69:14:69:23 | call to method Any | LoopUnrolling.cs:69:14:69:17 | access to parameter args |
+| LoopUnrolling.cs:70:13:70:19 | return ...; | LoopUnrolling.cs:70:13:70:19 | return ...; |
+| LoopUnrolling.cs:71:9:71:12 | access to parameter args | LoopUnrolling.cs:71:9:71:12 | access to parameter args |
+| LoopUnrolling.cs:71:9:71:20 | call to method Clear | LoopUnrolling.cs:71:9:71:12 | access to parameter args |
+| LoopUnrolling.cs:71:9:71:21 | ...; | LoopUnrolling.cs:71:9:71:21 | ...; |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:72:28:72:31 | access to parameter args |
+| LoopUnrolling.cs:72:21:72:23 | String arg | LoopUnrolling.cs:72:21:72:23 | String arg |
+| LoopUnrolling.cs:72:28:72:31 | access to parameter args | LoopUnrolling.cs:72:28:72:31 | access to parameter args |
+| LoopUnrolling.cs:73:13:73:34 | call to method WriteLine | LoopUnrolling.cs:73:31:73:33 | access to local variable arg |
+| LoopUnrolling.cs:73:13:73:35 | ...; | LoopUnrolling.cs:73:13:73:35 | ...; |
+| LoopUnrolling.cs:73:31:73:33 | access to local variable arg | LoopUnrolling.cs:73:31:73:33 | access to local variable arg |
 | NullCoalescing.cs:3:23:3:23 | access to parameter i | NullCoalescing.cs:3:23:3:23 | access to parameter i |
 | NullCoalescing.cs:3:23:3:28 | ... ?? ... | NullCoalescing.cs:3:23:3:28 | ... ?? ... |
 | NullCoalescing.cs:3:28:3:28 | 0 | NullCoalescing.cs:3:28:3:28 | 0 |
--- a/csharp/ql/test/library-tests/controlflow/graph/ExitElement.expected
+++ b/csharp/ql/test/library-tests/controlflow/graph/ExitElement.expected
@@ -1372,6 +1372,153 @@
 | Initializers.cs:33:33:33:33 | access to parameter i | Initializers.cs:33:33:33:33 | access to parameter i | normal |
 | Initializers.cs:33:33:33:37 | ... + ... | Initializers.cs:33:33:33:37 | ... + ... | normal |
 | Initializers.cs:33:37:33:37 | access to parameter j | Initializers.cs:33:37:33:37 | access to parameter j | normal |
+| LoopUnrolling.cs:8:5:13:5 | {...} | LoopUnrolling.cs:10:13:10:19 | return ...; | return |
+| LoopUnrolling.cs:8:5:13:5 | {...} | LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:9:9:10:19 | if (...) ... | LoopUnrolling.cs:9:13:9:28 | ... == ... | false |
+| LoopUnrolling.cs:9:9:10:19 | if (...) ... | LoopUnrolling.cs:10:13:10:19 | return ...; | return |
+| LoopUnrolling.cs:9:13:9:16 | access to parameter args | LoopUnrolling.cs:9:13:9:16 | access to parameter args | normal |
+| LoopUnrolling.cs:9:13:9:23 | access to property Length | LoopUnrolling.cs:9:13:9:23 | access to property Length | normal |
+| LoopUnrolling.cs:9:13:9:28 | ... == ... | LoopUnrolling.cs:9:13:9:28 | ... == ... | false |
+| LoopUnrolling.cs:9:13:9:28 | ... == ... | LoopUnrolling.cs:9:13:9:28 | ... == ... | true |
+| LoopUnrolling.cs:9:28:9:28 | 0 | LoopUnrolling.cs:9:28:9:28 | 0 | normal |
+| LoopUnrolling.cs:10:13:10:19 | return ...; | LoopUnrolling.cs:10:13:10:19 | return ...; | return |
+| LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:11:21:11:23 | String arg | LoopUnrolling.cs:11:21:11:23 | String arg | normal |
+| LoopUnrolling.cs:11:28:11:31 | access to parameter args | LoopUnrolling.cs:11:28:11:31 | access to parameter args | normal |
+| LoopUnrolling.cs:12:13:12:34 | call to method WriteLine | LoopUnrolling.cs:12:13:12:34 | call to method WriteLine | normal |
+| LoopUnrolling.cs:12:13:12:35 | ...; | LoopUnrolling.cs:12:13:12:34 | call to method WriteLine | normal |
+| LoopUnrolling.cs:12:31:12:33 | access to local variable arg | LoopUnrolling.cs:12:31:12:33 | access to local variable arg | normal |
+| LoopUnrolling.cs:16:5:20:5 | {...} | LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:17:9:17:47 | ... ...; | LoopUnrolling.cs:17:13:17:46 | String[] xs = ... | normal |
+| LoopUnrolling.cs:17:13:17:46 | String[] xs = ... | LoopUnrolling.cs:17:13:17:46 | String[] xs = ... | normal |
+| LoopUnrolling.cs:17:18:17:46 | 3 | LoopUnrolling.cs:17:18:17:46 | 3 | normal |
+| LoopUnrolling.cs:17:18:17:46 | array creation of type String[] | LoopUnrolling.cs:17:30:17:46 | { ..., ... } | normal |
+| LoopUnrolling.cs:17:30:17:46 | { ..., ... } | LoopUnrolling.cs:17:30:17:46 | { ..., ... } | normal |
+| LoopUnrolling.cs:17:32:17:34 | "a" | LoopUnrolling.cs:17:32:17:34 | "a" | normal |
+| LoopUnrolling.cs:17:37:17:39 | "b" | LoopUnrolling.cs:17:37:17:39 | "b" | normal |
+| LoopUnrolling.cs:17:42:17:44 | "c" | LoopUnrolling.cs:17:42:17:44 | "c" | normal |
+| LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:18:21:18:21 | String x | normal |
+| LoopUnrolling.cs:18:26:18:27 | access to local variable xs | LoopUnrolling.cs:18:26:18:27 | access to local variable xs | normal |
+| LoopUnrolling.cs:19:13:19:32 | call to method WriteLine | LoopUnrolling.cs:19:13:19:32 | call to method WriteLine | normal |
+| LoopUnrolling.cs:19:13:19:33 | ...; | LoopUnrolling.cs:19:13:19:32 | call to method WriteLine | normal |
+| LoopUnrolling.cs:19:31:19:31 | access to local variable x | LoopUnrolling.cs:19:31:19:31 | access to local variable x | normal |
+| LoopUnrolling.cs:23:5:27:5 | {...} | LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:24:22:24:24 | Char arg | LoopUnrolling.cs:24:22:24:24 | Char arg | normal |
+| LoopUnrolling.cs:24:29:24:32 | access to parameter args | LoopUnrolling.cs:24:29:24:32 | access to parameter args | normal |
+| LoopUnrolling.cs:25:13:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:25:13:26:40 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:25:26:25:29 | Char arg0 | LoopUnrolling.cs:25:26:25:29 | Char arg0 | normal |
+| LoopUnrolling.cs:25:34:25:37 | access to parameter args | LoopUnrolling.cs:25:34:25:37 | access to parameter args | normal |
+| LoopUnrolling.cs:26:17:26:39 | call to method WriteLine | LoopUnrolling.cs:26:17:26:39 | call to method WriteLine | normal |
+| LoopUnrolling.cs:26:17:26:40 | ...; | LoopUnrolling.cs:26:17:26:39 | call to method WriteLine | normal |
+| LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 | LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 | normal |
+| LoopUnrolling.cs:30:5:34:5 | {...} | LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:31:9:31:31 | ... ...; | LoopUnrolling.cs:31:13:31:30 | String[] xs = ... | normal |
+| LoopUnrolling.cs:31:13:31:30 | String[] xs = ... | LoopUnrolling.cs:31:13:31:30 | String[] xs = ... | normal |
+| LoopUnrolling.cs:31:18:31:30 | array creation of type String[] | LoopUnrolling.cs:31:18:31:30 | array creation of type String[] | normal |
+| LoopUnrolling.cs:31:29:31:29 | 0 | LoopUnrolling.cs:31:29:31:29 | 0 | normal |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:32:21:32:21 | String x | LoopUnrolling.cs:32:21:32:21 | String x | normal |
+| LoopUnrolling.cs:32:26:32:27 | access to local variable xs | LoopUnrolling.cs:32:26:32:27 | access to local variable xs | normal |
+| LoopUnrolling.cs:33:13:33:32 | call to method WriteLine | LoopUnrolling.cs:33:13:33:32 | call to method WriteLine | normal |
+| LoopUnrolling.cs:33:13:33:33 | ...; | LoopUnrolling.cs:33:13:33:32 | call to method WriteLine | normal |
+| LoopUnrolling.cs:33:31:33:31 | access to local variable x | LoopUnrolling.cs:33:31:33:31 | access to local variable x | normal |
+| LoopUnrolling.cs:37:5:43:5 | {...} | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:38:9:38:47 | ... ...; | LoopUnrolling.cs:38:13:38:46 | String[] xs = ... | normal |
+| LoopUnrolling.cs:38:13:38:46 | String[] xs = ... | LoopUnrolling.cs:38:13:38:46 | String[] xs = ... | normal |
+| LoopUnrolling.cs:38:18:38:46 | 3 | LoopUnrolling.cs:38:18:38:46 | 3 | normal |
+| LoopUnrolling.cs:38:18:38:46 | array creation of type String[] | LoopUnrolling.cs:38:30:38:46 | { ..., ... } | normal |
+| LoopUnrolling.cs:38:30:38:46 | { ..., ... } | LoopUnrolling.cs:38:30:38:46 | { ..., ... } | normal |
+| LoopUnrolling.cs:38:32:38:34 | "a" | LoopUnrolling.cs:38:32:38:34 | "a" | normal |
+| LoopUnrolling.cs:38:37:38:39 | "b" | LoopUnrolling.cs:38:37:38:39 | "b" | normal |
+| LoopUnrolling.cs:38:42:38:44 | "c" | LoopUnrolling.cs:38:42:38:44 | "c" | normal |
+| LoopUnrolling.cs:39:9:39:47 | ... ...; | LoopUnrolling.cs:39:13:39:46 | String[] ys = ... | normal |
+| LoopUnrolling.cs:39:13:39:46 | String[] ys = ... | LoopUnrolling.cs:39:13:39:46 | String[] ys = ... | normal |
+| LoopUnrolling.cs:39:18:39:46 | 3 | LoopUnrolling.cs:39:18:39:46 | 3 | normal |
+| LoopUnrolling.cs:39:18:39:46 | array creation of type String[] | LoopUnrolling.cs:39:30:39:46 | { ..., ... } | normal |
+| LoopUnrolling.cs:39:30:39:46 | { ..., ... } | LoopUnrolling.cs:39:30:39:46 | { ..., ... } | normal |
+| LoopUnrolling.cs:39:32:39:34 | "0" | LoopUnrolling.cs:39:32:39:34 | "0" | normal |
+| LoopUnrolling.cs:39:37:39:39 | "1" | LoopUnrolling.cs:39:37:39:39 | "1" | normal |
+| LoopUnrolling.cs:39:42:39:44 | "2" | LoopUnrolling.cs:39:42:39:44 | "2" | normal |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:40:21:40:21 | String x | normal |
+| LoopUnrolling.cs:40:26:40:27 | access to local variable xs | LoopUnrolling.cs:40:26:40:27 | access to local variable xs | normal |
+| LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:41:25:41:25 | String y | normal |
+| LoopUnrolling.cs:41:30:41:31 | access to local variable ys | LoopUnrolling.cs:41:30:41:31 | access to local variable ys | normal |
+| LoopUnrolling.cs:42:17:42:40 | call to method WriteLine | LoopUnrolling.cs:42:17:42:40 | call to method WriteLine | normal |
+| LoopUnrolling.cs:42:17:42:41 | ...; | LoopUnrolling.cs:42:17:42:40 | call to method WriteLine | normal |
+| LoopUnrolling.cs:42:35:42:35 | access to local variable x | LoopUnrolling.cs:42:35:42:35 | access to local variable x | normal |
+| LoopUnrolling.cs:42:35:42:39 | ... + ... | LoopUnrolling.cs:42:35:42:39 | ... + ... | normal |
+| LoopUnrolling.cs:42:39:42:39 | access to local variable y | LoopUnrolling.cs:42:39:42:39 | access to local variable y | normal |
+| LoopUnrolling.cs:46:5:53:5 | {...} | LoopUnrolling.cs:48:9:52:9 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:46:5:53:5 | {...} | LoopUnrolling.cs:51:13:51:23 | goto ...; | goto(Label) |
+| LoopUnrolling.cs:47:9:47:47 | ... ...; | LoopUnrolling.cs:47:13:47:46 | String[] xs = ... | normal |
+| LoopUnrolling.cs:47:13:47:46 | String[] xs = ... | LoopUnrolling.cs:47:13:47:46 | String[] xs = ... | normal |
+| LoopUnrolling.cs:47:18:47:46 | 3 | LoopUnrolling.cs:47:18:47:46 | 3 | normal |
+| LoopUnrolling.cs:47:18:47:46 | array creation of type String[] | LoopUnrolling.cs:47:30:47:46 | { ..., ... } | normal |
+| LoopUnrolling.cs:47:30:47:46 | { ..., ... } | LoopUnrolling.cs:47:30:47:46 | { ..., ... } | normal |
+| LoopUnrolling.cs:47:32:47:34 | "a" | LoopUnrolling.cs:47:32:47:34 | "a" | normal |
+| LoopUnrolling.cs:47:37:47:39 | "b" | LoopUnrolling.cs:47:37:47:39 | "b" | normal |
+| LoopUnrolling.cs:47:42:47:44 | "c" | LoopUnrolling.cs:47:42:47:44 | "c" | normal |
+| LoopUnrolling.cs:48:9:52:9 | foreach (... ... in ...) ... | LoopUnrolling.cs:48:9:52:9 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:48:9:52:9 | foreach (... ... in ...) ... | LoopUnrolling.cs:51:13:51:23 | goto ...; | goto(Label) |
+| LoopUnrolling.cs:48:21:48:21 | String x | LoopUnrolling.cs:48:21:48:21 | String x | normal |
+| LoopUnrolling.cs:48:26:48:27 | access to local variable xs | LoopUnrolling.cs:48:26:48:27 | access to local variable xs | normal |
+| LoopUnrolling.cs:49:9:52:9 | {...} | LoopUnrolling.cs:51:13:51:23 | goto ...; | goto(Label) |
+| LoopUnrolling.cs:50:13:50:17 | Label: | LoopUnrolling.cs:50:13:50:17 | Label: | normal |
+| LoopUnrolling.cs:50:20:50:39 | call to method WriteLine | LoopUnrolling.cs:50:20:50:39 | call to method WriteLine | normal |
+| LoopUnrolling.cs:50:20:50:40 | ...; | LoopUnrolling.cs:50:20:50:39 | call to method WriteLine | normal |
+| LoopUnrolling.cs:50:38:50:38 | access to local variable x | LoopUnrolling.cs:50:38:50:38 | access to local variable x | normal |
+| LoopUnrolling.cs:51:13:51:23 | goto ...; | LoopUnrolling.cs:51:13:51:23 | goto ...; | goto(Label) |
+| LoopUnrolling.cs:56:5:65:5 | {...} | LoopUnrolling.cs:58:9:64:9 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:57:9:57:47 | ... ...; | LoopUnrolling.cs:57:13:57:46 | String[] xs = ... | normal |
+| LoopUnrolling.cs:57:13:57:46 | String[] xs = ... | LoopUnrolling.cs:57:13:57:46 | String[] xs = ... | normal |
+| LoopUnrolling.cs:57:18:57:46 | 3 | LoopUnrolling.cs:57:18:57:46 | 3 | normal |
+| LoopUnrolling.cs:57:18:57:46 | array creation of type String[] | LoopUnrolling.cs:57:30:57:46 | { ..., ... } | normal |
+| LoopUnrolling.cs:57:30:57:46 | { ..., ... } | LoopUnrolling.cs:57:30:57:46 | { ..., ... } | normal |
+| LoopUnrolling.cs:57:32:57:34 | "a" | LoopUnrolling.cs:57:32:57:34 | "a" | normal |
+| LoopUnrolling.cs:57:37:57:39 | "b" | LoopUnrolling.cs:57:37:57:39 | "b" | normal |
+| LoopUnrolling.cs:57:42:57:44 | "c" | LoopUnrolling.cs:57:42:57:44 | "c" | normal |
+| LoopUnrolling.cs:58:9:64:9 | foreach (... ... in ...) ... | LoopUnrolling.cs:58:9:64:9 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:58:21:58:21 | String x | LoopUnrolling.cs:58:21:58:21 | String x | normal |
+| LoopUnrolling.cs:58:26:58:27 | access to local variable xs | LoopUnrolling.cs:58:26:58:27 | access to local variable xs | normal |
+| LoopUnrolling.cs:59:9:64:9 | {...} | LoopUnrolling.cs:62:17:62:17 | access to parameter b | false |
+| LoopUnrolling.cs:59:9:64:9 | {...} | LoopUnrolling.cs:63:17:63:36 | call to method WriteLine | normal |
+| LoopUnrolling.cs:60:13:61:37 | if (...) ... | LoopUnrolling.cs:60:17:60:17 | access to parameter b | false |
+| LoopUnrolling.cs:60:13:61:37 | if (...) ... | LoopUnrolling.cs:61:17:61:36 | call to method WriteLine | normal |
+| LoopUnrolling.cs:60:17:60:17 | access to parameter b | LoopUnrolling.cs:60:17:60:17 | access to parameter b | false |
+| LoopUnrolling.cs:60:17:60:17 | access to parameter b | LoopUnrolling.cs:60:17:60:17 | access to parameter b | true |
+| LoopUnrolling.cs:61:17:61:36 | call to method WriteLine | LoopUnrolling.cs:61:17:61:36 | call to method WriteLine | normal |
+| LoopUnrolling.cs:61:17:61:37 | ...; | LoopUnrolling.cs:61:17:61:36 | call to method WriteLine | normal |
+| LoopUnrolling.cs:61:35:61:35 | access to local variable x | LoopUnrolling.cs:61:35:61:35 | access to local variable x | normal |
+| LoopUnrolling.cs:62:13:63:37 | if (...) ... | LoopUnrolling.cs:62:17:62:17 | access to parameter b | false |
+| LoopUnrolling.cs:62:13:63:37 | if (...) ... | LoopUnrolling.cs:63:17:63:36 | call to method WriteLine | normal |
+| LoopUnrolling.cs:62:17:62:17 | access to parameter b | LoopUnrolling.cs:62:17:62:17 | access to parameter b | false |
+| LoopUnrolling.cs:62:17:62:17 | access to parameter b | LoopUnrolling.cs:62:17:62:17 | access to parameter b | true |
+| LoopUnrolling.cs:63:17:63:36 | call to method WriteLine | LoopUnrolling.cs:63:17:63:36 | call to method WriteLine | normal |
+| LoopUnrolling.cs:63:17:63:37 | ...; | LoopUnrolling.cs:63:17:63:36 | call to method WriteLine | normal |
+| LoopUnrolling.cs:63:35:63:35 | access to local variable x | LoopUnrolling.cs:63:35:63:35 | access to local variable x | normal |
+| LoopUnrolling.cs:68:5:74:5 | {...} | LoopUnrolling.cs:70:13:70:19 | return ...; | return |
+| LoopUnrolling.cs:68:5:74:5 | {...} | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:69:9:70:19 | if (...) ... | LoopUnrolling.cs:69:14:69:23 | call to method Any | false [true] |
+| LoopUnrolling.cs:69:9:70:19 | if (...) ... | LoopUnrolling.cs:70:13:70:19 | return ...; | return |
+| LoopUnrolling.cs:69:13:69:23 | !... | LoopUnrolling.cs:69:14:69:23 | call to method Any | false [true] |
+| LoopUnrolling.cs:69:13:69:23 | !... | LoopUnrolling.cs:69:14:69:23 | call to method Any | true [false] |
+| LoopUnrolling.cs:69:14:69:17 | access to parameter args | LoopUnrolling.cs:69:14:69:17 | access to parameter args | normal |
+| LoopUnrolling.cs:69:14:69:23 | call to method Any | LoopUnrolling.cs:69:14:69:23 | call to method Any | false |
+| LoopUnrolling.cs:69:14:69:23 | call to method Any | LoopUnrolling.cs:69:14:69:23 | call to method Any | true |
+| LoopUnrolling.cs:70:13:70:19 | return ...; | LoopUnrolling.cs:70:13:70:19 | return ...; | return |
+| LoopUnrolling.cs:71:9:71:12 | access to parameter args | LoopUnrolling.cs:71:9:71:12 | access to parameter args | normal |
+| LoopUnrolling.cs:71:9:71:20 | call to method Clear | LoopUnrolling.cs:71:9:71:20 | call to method Clear | normal |
+| LoopUnrolling.cs:71:9:71:21 | ...; | LoopUnrolling.cs:71:9:71:20 | call to method Clear | normal |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | empty |
+| LoopUnrolling.cs:72:21:72:23 | String arg | LoopUnrolling.cs:72:21:72:23 | String arg | normal |
+| LoopUnrolling.cs:72:28:72:31 | access to parameter args | LoopUnrolling.cs:72:28:72:31 | access to parameter args | normal |
+| LoopUnrolling.cs:73:13:73:34 | call to method WriteLine | LoopUnrolling.cs:73:13:73:34 | call to method WriteLine | normal |
+| LoopUnrolling.cs:73:13:73:35 | ...; | LoopUnrolling.cs:73:13:73:34 | call to method WriteLine | normal |
+| LoopUnrolling.cs:73:31:73:33 | access to local variable arg | LoopUnrolling.cs:73:31:73:33 | access to local variable arg | normal |
 | NullCoalescing.cs:3:23:3:23 | access to parameter i | NullCoalescing.cs:3:23:3:23 | access to parameter i | non-null |
 | NullCoalescing.cs:3:23:3:23 | access to parameter i | NullCoalescing.cs:3:23:3:23 | access to parameter i | null |
 | NullCoalescing.cs:3:23:3:28 | ... ?? ... | NullCoalescing.cs:3:23:3:23 | access to parameter i | non-null |
--- a/csharp/ql/test/library-tests/controlflow/graph/LoopUnrolling.cs
+++ b/csharp/ql/test/library-tests/controlflow/graph/LoopUnrolling.cs
@@ -0,0 +1,75 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+class LoopUnrolling
+{
+    void M1(string[] args)
+    {
+        if (args.Length == 0)
+            return;
+        foreach(var arg in args) // unroll
+            Console.WriteLine(arg);
+    }
+
+    void M2()
+    {
+        var xs = new string[]{ "a", "b", "c" };
+        foreach(var x in xs) // unroll
+            Console.WriteLine(x);
+    }
+
+    void M3(string args)
+    {
+        foreach (var arg in args) // no unroll
+            foreach (var arg0 in args) // unroll
+                Console.WriteLine(arg0);
+    }
+
+    void M4()
+    {
+        var xs = new string[0];
+        foreach(var x in xs) // no unroll
+            Console.WriteLine(x);
+    }
+
+    void M5()
+    {
+        var xs = new string[]{ "a", "b", "c" };
+        var ys = new string[]{ "0", "1", "2" };
+        foreach(var x in xs) // unroll
+            foreach(var y in ys) // unroll
+                Console.WriteLine(x + y);
+    }
+
+    void M6()
+    {
+        var xs = new string[]{ "a", "b", "c" };
+        foreach(var x in xs) // unroll
+        {
+            Label: Console.WriteLine(x);
+            goto Label;
+        }
+    }
+
+    void M7(bool b)
+    {
+        var xs = new string[]{ "a", "b", "c" };
+        foreach(var x in xs) // unroll
+        {
+            if (b)
+                Console.WriteLine(x);
+            if (b)
+                Console.WriteLine(x);
+        }
+    }
+
+    void M8(List<string> args)
+    {
+        if (!args.Any())
+            return;
+        args.Clear();
+        foreach(var arg in args) // no unroll
+            Console.WriteLine(arg);
+    }
+}
--- a/csharp/ql/test/library-tests/controlflow/graph/NodeGraph.expected
+++ b/csharp/ql/test/library-tests/controlflow/graph/NodeGraph.expected
@@ -1447,6 +1447,172 @@
 | Initializers.cs:33:33:33:33 | access to parameter i | Initializers.cs:33:37:33:37 | access to parameter j | semmle.label | successor |
 | Initializers.cs:33:33:33:37 | ... + ... | Initializers.cs:33:29:33:37 | ... = ... | semmle.label | successor |
 | Initializers.cs:33:37:33:37 | access to parameter j | Initializers.cs:33:33:33:37 | ... + ... | semmle.label | successor |
+| LoopUnrolling.cs:7:10:7:11 | enter M1 | LoopUnrolling.cs:8:5:13:5 | {...} | semmle.label | successor |
+| LoopUnrolling.cs:8:5:13:5 | {...} | LoopUnrolling.cs:9:9:10:19 | if (...) ... | semmle.label | successor |
+| LoopUnrolling.cs:9:9:10:19 | if (...) ... | LoopUnrolling.cs:9:13:9:16 | access to parameter args | semmle.label | successor |
+| LoopUnrolling.cs:9:13:9:16 | access to parameter args | LoopUnrolling.cs:9:13:9:23 | access to property Length | semmle.label | successor |
+| LoopUnrolling.cs:9:13:9:23 | access to property Length | LoopUnrolling.cs:9:28:9:28 | 0 | semmle.label | successor |
+| LoopUnrolling.cs:9:13:9:28 | ... == ... | LoopUnrolling.cs:10:13:10:19 | return ...; | semmle.label | true |
+| LoopUnrolling.cs:9:13:9:28 | ... == ... | LoopUnrolling.cs:11:28:11:31 | access to parameter args | semmle.label | false |
+| LoopUnrolling.cs:9:28:9:28 | 0 | LoopUnrolling.cs:9:13:9:28 | ... == ... | semmle.label | successor |
+| LoopUnrolling.cs:10:13:10:19 | return ...; | LoopUnrolling.cs:7:10:7:11 | exit M1 | semmle.label | return |
+| LoopUnrolling.cs:11:9:12:35 | [unroll (line 11)] foreach (... ... in ...) ... | LoopUnrolling.cs:11:21:11:23 | String arg | semmle.label | non-empty |
+| LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:7:10:7:11 | exit M1 | semmle.label | empty |
+| LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:11:21:11:23 | String arg | semmle.label | non-empty |
+| LoopUnrolling.cs:11:21:11:23 | String arg | LoopUnrolling.cs:12:13:12:35 | ...; | semmle.label | successor |
+| LoopUnrolling.cs:11:28:11:31 | access to parameter args | LoopUnrolling.cs:11:9:12:35 | [unroll (line 11)] foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:12:13:12:34 | call to method WriteLine | LoopUnrolling.cs:11:9:12:35 | foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:12:13:12:35 | ...; | LoopUnrolling.cs:12:31:12:33 | access to local variable arg | semmle.label | successor |
+| LoopUnrolling.cs:12:31:12:33 | access to local variable arg | LoopUnrolling.cs:12:13:12:34 | call to method WriteLine | semmle.label | successor |
+| LoopUnrolling.cs:15:10:15:11 | enter M2 | LoopUnrolling.cs:16:5:20:5 | {...} | semmle.label | successor |
+| LoopUnrolling.cs:16:5:20:5 | {...} | LoopUnrolling.cs:17:9:17:47 | ... ...; | semmle.label | successor |
+| LoopUnrolling.cs:17:9:17:47 | ... ...; | LoopUnrolling.cs:17:18:17:46 | array creation of type String[] | semmle.label | successor |
+| LoopUnrolling.cs:17:13:17:46 | String[] xs = ... | LoopUnrolling.cs:18:26:18:27 | access to local variable xs | semmle.label | successor |
+| LoopUnrolling.cs:17:18:17:46 | array creation of type String[] | LoopUnrolling.cs:17:32:17:34 | "a" | semmle.label | successor |
+| LoopUnrolling.cs:17:30:17:46 | { ..., ... } | LoopUnrolling.cs:17:13:17:46 | String[] xs = ... | semmle.label | successor |
+| LoopUnrolling.cs:17:32:17:34 | "a" | LoopUnrolling.cs:17:37:17:39 | "b" | semmle.label | successor |
+| LoopUnrolling.cs:17:37:17:39 | "b" | LoopUnrolling.cs:17:42:17:44 | "c" | semmle.label | successor |
+| LoopUnrolling.cs:17:42:17:44 | "c" | LoopUnrolling.cs:17:30:17:46 | { ..., ... } | semmle.label | successor |
+| LoopUnrolling.cs:18:9:19:33 | [unroll (line 18)] foreach (... ... in ...) ... | LoopUnrolling.cs:18:21:18:21 | String x | semmle.label | non-empty |
+| LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:15:10:15:11 | exit M2 | semmle.label | empty |
+| LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:18:21:18:21 | String x | semmle.label | non-empty |
+| LoopUnrolling.cs:18:21:18:21 | String x | LoopUnrolling.cs:19:13:19:33 | ...; | semmle.label | successor |
+| LoopUnrolling.cs:18:26:18:27 | access to local variable xs | LoopUnrolling.cs:18:9:19:33 | [unroll (line 18)] foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:19:13:19:32 | call to method WriteLine | LoopUnrolling.cs:18:9:19:33 | foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:19:13:19:33 | ...; | LoopUnrolling.cs:19:31:19:31 | access to local variable x | semmle.label | successor |
+| LoopUnrolling.cs:19:31:19:31 | access to local variable x | LoopUnrolling.cs:19:13:19:32 | call to method WriteLine | semmle.label | successor |
+| LoopUnrolling.cs:22:10:22:11 | enter M3 | LoopUnrolling.cs:23:5:27:5 | {...} | semmle.label | successor |
+| LoopUnrolling.cs:23:5:27:5 | {...} | LoopUnrolling.cs:24:29:24:32 | access to parameter args | semmle.label | successor |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:22:10:22:11 | exit M3 | semmle.label | empty |
+| LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:22:24:24 | Char arg | semmle.label | non-empty |
+| LoopUnrolling.cs:24:22:24:24 | Char arg | LoopUnrolling.cs:25:34:25:37 | access to parameter args | semmle.label | successor |
+| LoopUnrolling.cs:24:29:24:32 | access to parameter args | LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:25:13:26:40 | [unroll (line 25)] foreach (... ... in ...) ... | LoopUnrolling.cs:25:26:25:29 | Char arg0 | semmle.label | non-empty |
+| LoopUnrolling.cs:25:13:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:24:9:26:40 | foreach (... ... in ...) ... | semmle.label | empty |
+| LoopUnrolling.cs:25:13:26:40 | foreach (... ... in ...) ... | LoopUnrolling.cs:25:26:25:29 | Char arg0 | semmle.label | non-empty |
+| LoopUnrolling.cs:25:26:25:29 | Char arg0 | LoopUnrolling.cs:26:17:26:40 | ...; | semmle.label | successor |
+| LoopUnrolling.cs:25:34:25:37 | access to parameter args | LoopUnrolling.cs:25:13:26:40 | [unroll (line 25)] foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:26:17:26:39 | call to method WriteLine | LoopUnrolling.cs:25:13:26:40 | foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:26:17:26:40 | ...; | LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 | semmle.label | successor |
+| LoopUnrolling.cs:26:35:26:38 | access to local variable arg0 | LoopUnrolling.cs:26:17:26:39 | call to method WriteLine | semmle.label | successor |
+| LoopUnrolling.cs:29:10:29:11 | enter M4 | LoopUnrolling.cs:30:5:34:5 | {...} | semmle.label | successor |
+| LoopUnrolling.cs:30:5:34:5 | {...} | LoopUnrolling.cs:31:9:31:31 | ... ...; | semmle.label | successor |
+| LoopUnrolling.cs:31:9:31:31 | ... ...; | LoopUnrolling.cs:31:29:31:29 | 0 | semmle.label | successor |
+| LoopUnrolling.cs:31:13:31:30 | String[] xs = ... | LoopUnrolling.cs:32:26:32:27 | access to local variable xs | semmle.label | successor |
+| LoopUnrolling.cs:31:18:31:30 | array creation of type String[] | LoopUnrolling.cs:31:13:31:30 | String[] xs = ... | semmle.label | successor |
+| LoopUnrolling.cs:31:29:31:29 | 0 | LoopUnrolling.cs:31:18:31:30 | array creation of type String[] | semmle.label | successor |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:29:10:29:11 | exit M4 | semmle.label | empty |
+| LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | LoopUnrolling.cs:32:21:32:21 | String x | semmle.label | non-empty |
+| LoopUnrolling.cs:32:21:32:21 | String x | LoopUnrolling.cs:33:13:33:33 | ...; | semmle.label | successor |
+| LoopUnrolling.cs:32:26:32:27 | access to local variable xs | LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:33:13:33:32 | call to method WriteLine | LoopUnrolling.cs:32:9:33:33 | foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:33:13:33:33 | ...; | LoopUnrolling.cs:33:31:33:31 | access to local variable x | semmle.label | successor |
+| LoopUnrolling.cs:33:31:33:31 | access to local variable x | LoopUnrolling.cs:33:13:33:32 | call to method WriteLine | semmle.label | successor |
+| LoopUnrolling.cs:36:10:36:11 | enter M5 | LoopUnrolling.cs:37:5:43:5 | {...} | semmle.label | successor |
+| LoopUnrolling.cs:37:5:43:5 | {...} | LoopUnrolling.cs:38:9:38:47 | ... ...; | semmle.label | successor |
+| LoopUnrolling.cs:38:9:38:47 | ... ...; | LoopUnrolling.cs:38:18:38:46 | array creation of type String[] | semmle.label | successor |
+| LoopUnrolling.cs:38:13:38:46 | String[] xs = ... | LoopUnrolling.cs:39:9:39:47 | ... ...; | semmle.label | successor |
+| LoopUnrolling.cs:38:18:38:46 | array creation of type String[] | LoopUnrolling.cs:38:32:38:34 | "a" | semmle.label | successor |
+| LoopUnrolling.cs:38:30:38:46 | { ..., ... } | LoopUnrolling.cs:38:13:38:46 | String[] xs = ... | semmle.label | successor |
+| LoopUnrolling.cs:38:32:38:34 | "a" | LoopUnrolling.cs:38:37:38:39 | "b" | semmle.label | successor |
+| LoopUnrolling.cs:38:37:38:39 | "b" | LoopUnrolling.cs:38:42:38:44 | "c" | semmle.label | successor |
+| LoopUnrolling.cs:38:42:38:44 | "c" | LoopUnrolling.cs:38:30:38:46 | { ..., ... } | semmle.label | successor |
+| LoopUnrolling.cs:39:9:39:47 | ... ...; | LoopUnrolling.cs:39:18:39:46 | array creation of type String[] | semmle.label | successor |
+| LoopUnrolling.cs:39:13:39:46 | String[] ys = ... | LoopUnrolling.cs:40:26:40:27 | access to local variable xs | semmle.label | successor |
+| LoopUnrolling.cs:39:18:39:46 | array creation of type String[] | LoopUnrolling.cs:39:32:39:34 | "0" | semmle.label | successor |
+| LoopUnrolling.cs:39:30:39:46 | { ..., ... } | LoopUnrolling.cs:39:13:39:46 | String[] ys = ... | semmle.label | successor |
+| LoopUnrolling.cs:39:32:39:34 | "0" | LoopUnrolling.cs:39:37:39:39 | "1" | semmle.label | successor |
+| LoopUnrolling.cs:39:37:39:39 | "1" | LoopUnrolling.cs:39:42:39:44 | "2" | semmle.label | successor |
+| LoopUnrolling.cs:39:42:39:44 | "2" | LoopUnrolling.cs:39:30:39:46 | { ..., ... } | semmle.label | successor |
+| LoopUnrolling.cs:40:9:42:41 | [unroll (line 40)] foreach (... ... in ...) ... | LoopUnrolling.cs:40:21:40:21 | String x | semmle.label | non-empty |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:36:10:36:11 | exit M5 | semmle.label | empty |
+| LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:40:21:40:21 | String x | semmle.label | non-empty |
+| LoopUnrolling.cs:40:21:40:21 | String x | LoopUnrolling.cs:41:30:41:31 | access to local variable ys | semmle.label | successor |
+| LoopUnrolling.cs:40:26:40:27 | access to local variable xs | LoopUnrolling.cs:40:9:42:41 | [unroll (line 40)] foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:41:13:42:41 | [unroll (line 41)] foreach (... ... in ...) ... | LoopUnrolling.cs:41:25:41:25 | String y | semmle.label | non-empty |
+| LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:40:9:42:41 | foreach (... ... in ...) ... | semmle.label | empty |
+| LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... | LoopUnrolling.cs:41:25:41:25 | String y | semmle.label | non-empty |
+| LoopUnrolling.cs:41:25:41:25 | String y | LoopUnrolling.cs:42:17:42:41 | ...; | semmle.label | successor |
+| LoopUnrolling.cs:41:30:41:31 | access to local variable ys | LoopUnrolling.cs:41:13:42:41 | [unroll (line 41)] foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:42:17:42:40 | call to method WriteLine | LoopUnrolling.cs:41:13:42:41 | foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:42:17:42:41 | ...; | LoopUnrolling.cs:42:35:42:35 | access to local variable x | semmle.label | successor |
+| LoopUnrolling.cs:42:35:42:35 | access to local variable x | LoopUnrolling.cs:42:39:42:39 | access to local variable y | semmle.label | successor |
+| LoopUnrolling.cs:42:35:42:39 | ... + ... | LoopUnrolling.cs:42:17:42:40 | call to method WriteLine | semmle.label | successor |
+| LoopUnrolling.cs:42:39:42:39 | access to local variable y | LoopUnrolling.cs:42:35:42:39 | ... + ... | semmle.label | successor |
+| LoopUnrolling.cs:45:10:45:11 | enter M6 | LoopUnrolling.cs:46:5:53:5 | {...} | semmle.label | successor |
+| LoopUnrolling.cs:46:5:53:5 | {...} | LoopUnrolling.cs:47:9:47:47 | ... ...; | semmle.label | successor |
+| LoopUnrolling.cs:47:9:47:47 | ... ...; | LoopUnrolling.cs:47:18:47:46 | array creation of type String[] | semmle.label | successor |
+| LoopUnrolling.cs:47:13:47:46 | String[] xs = ... | LoopUnrolling.cs:48:26:48:27 | access to local variable xs | semmle.label | successor |
+| LoopUnrolling.cs:47:18:47:46 | array creation of type String[] | LoopUnrolling.cs:47:32:47:34 | "a" | semmle.label | successor |
+| LoopUnrolling.cs:47:30:47:46 | { ..., ... } | LoopUnrolling.cs:47:13:47:46 | String[] xs = ... | semmle.label | successor |
+| LoopUnrolling.cs:47:32:47:34 | "a" | LoopUnrolling.cs:47:37:47:39 | "b" | semmle.label | successor |
+| LoopUnrolling.cs:47:37:47:39 | "b" | LoopUnrolling.cs:47:42:47:44 | "c" | semmle.label | successor |
+| LoopUnrolling.cs:47:42:47:44 | "c" | LoopUnrolling.cs:47:30:47:46 | { ..., ... } | semmle.label | successor |
+| LoopUnrolling.cs:48:9:52:9 | [unroll (line 48)] foreach (... ... in ...) ... | LoopUnrolling.cs:48:21:48:21 | String x | semmle.label | non-empty |
+| LoopUnrolling.cs:48:21:48:21 | String x | LoopUnrolling.cs:49:9:52:9 | {...} | semmle.label | successor |
+| LoopUnrolling.cs:48:26:48:27 | access to local variable xs | LoopUnrolling.cs:48:9:52:9 | [unroll (line 48)] foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:49:9:52:9 | {...} | LoopUnrolling.cs:50:13:50:17 | Label: | semmle.label | successor |
+| LoopUnrolling.cs:50:13:50:17 | Label: | LoopUnrolling.cs:50:20:50:40 | ...; | semmle.label | successor |
+| LoopUnrolling.cs:50:20:50:39 | call to method WriteLine | LoopUnrolling.cs:51:13:51:23 | goto ...; | semmle.label | successor |
+| LoopUnrolling.cs:50:20:50:40 | ...; | LoopUnrolling.cs:50:38:50:38 | access to local variable x | semmle.label | successor |
+| LoopUnrolling.cs:50:38:50:38 | access to local variable x | LoopUnrolling.cs:50:20:50:39 | call to method WriteLine | semmle.label | successor |
+| LoopUnrolling.cs:51:13:51:23 | goto ...; | LoopUnrolling.cs:50:13:50:17 | Label: | semmle.label | goto(Label) |
+| LoopUnrolling.cs:55:10:55:11 | enter M7 | LoopUnrolling.cs:56:5:65:5 | {...} | semmle.label | successor |
+| LoopUnrolling.cs:56:5:65:5 | {...} | LoopUnrolling.cs:57:9:57:47 | ... ...; | semmle.label | successor |
+| LoopUnrolling.cs:57:9:57:47 | ... ...; | LoopUnrolling.cs:57:18:57:46 | array creation of type String[] | semmle.label | successor |
+| LoopUnrolling.cs:57:13:57:46 | String[] xs = ... | LoopUnrolling.cs:58:26:58:27 | access to local variable xs | semmle.label | successor |
+| LoopUnrolling.cs:57:18:57:46 | array creation of type String[] | LoopUnrolling.cs:57:32:57:34 | "a" | semmle.label | successor |
+| LoopUnrolling.cs:57:30:57:46 | { ..., ... } | LoopUnrolling.cs:57:13:57:46 | String[] xs = ... | semmle.label | successor |
+| LoopUnrolling.cs:57:32:57:34 | "a" | LoopUnrolling.cs:57:37:57:39 | "b" | semmle.label | successor |
+| LoopUnrolling.cs:57:37:57:39 | "b" | LoopUnrolling.cs:57:42:57:44 | "c" | semmle.label | successor |
+| LoopUnrolling.cs:57:42:57:44 | "c" | LoopUnrolling.cs:57:30:57:46 | { ..., ... } | semmle.label | successor |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): false] foreach (... ... in ...) ... | LoopUnrolling.cs:55:10:55:11 | exit M7 | semmle.label | empty |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): false] foreach (... ... in ...) ... | LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x | semmle.label | non-empty |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): true] foreach (... ... in ...) ... | LoopUnrolling.cs:55:10:55:11 | exit M7 | semmle.label | empty |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): true] foreach (... ... in ...) ... | LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x | semmle.label | non-empty |
+| LoopUnrolling.cs:58:9:64:9 | [unroll (line 58)] foreach (... ... in ...) ... | LoopUnrolling.cs:58:21:58:21 | String x | semmle.label | non-empty |
+| LoopUnrolling.cs:58:21:58:21 | String x | LoopUnrolling.cs:59:9:64:9 | {...} | semmle.label | successor |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x | LoopUnrolling.cs:59:9:64:9 | [b (line 55): false] {...} | semmle.label | successor |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x | LoopUnrolling.cs:59:9:64:9 | [b (line 55): true] {...} | semmle.label | successor |
+| LoopUnrolling.cs:58:26:58:27 | access to local variable xs | LoopUnrolling.cs:58:9:64:9 | [unroll (line 58)] foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:59:9:64:9 | [b (line 55): false] {...} | LoopUnrolling.cs:60:13:61:37 | [b (line 55): false] if (...) ... | semmle.label | successor |
+| LoopUnrolling.cs:59:9:64:9 | [b (line 55): true] {...} | LoopUnrolling.cs:60:13:61:37 | [b (line 55): true] if (...) ... | semmle.label | successor |
+| LoopUnrolling.cs:59:9:64:9 | {...} | LoopUnrolling.cs:60:13:61:37 | if (...) ... | semmle.label | successor |
+| LoopUnrolling.cs:60:13:61:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:60:17:60:17 | [b (line 55): false] access to parameter b | semmle.label | successor |
+| LoopUnrolling.cs:60:13:61:37 | [b (line 55): true] if (...) ... | LoopUnrolling.cs:60:17:60:17 | [b (line 55): true] access to parameter b | semmle.label | successor |
+| LoopUnrolling.cs:60:13:61:37 | if (...) ... | LoopUnrolling.cs:60:17:60:17 | access to parameter b | semmle.label | successor |
+| LoopUnrolling.cs:60:17:60:17 | [b (line 55): false] access to parameter b | LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | semmle.label | false |
+| LoopUnrolling.cs:60:17:60:17 | [b (line 55): true] access to parameter b | LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | semmle.label | true |
+| LoopUnrolling.cs:60:17:60:17 | access to parameter b | LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | semmle.label | true |
+| LoopUnrolling.cs:60:17:60:17 | access to parameter b | LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | semmle.label | false |
+| LoopUnrolling.cs:61:17:61:36 | [b (line 55): true] call to method WriteLine | LoopUnrolling.cs:62:13:63:37 | [b (line 55): true] if (...) ... | semmle.label | successor |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | LoopUnrolling.cs:61:35:61:35 | [b (line 55): true] access to local variable x | semmle.label | successor |
+| LoopUnrolling.cs:61:35:61:35 | [b (line 55): true] access to local variable x | LoopUnrolling.cs:61:17:61:36 | [b (line 55): true] call to method WriteLine | semmle.label | successor |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | LoopUnrolling.cs:62:17:62:17 | [b (line 55): false] access to parameter b | semmle.label | successor |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): true] if (...) ... | LoopUnrolling.cs:62:17:62:17 | [b (line 55): true] access to parameter b | semmle.label | successor |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): false] access to parameter b | LoopUnrolling.cs:58:9:64:9 | [b (line 55): false] foreach (... ... in ...) ... | semmle.label | false |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): true] access to parameter b | LoopUnrolling.cs:63:17:63:37 | [b (line 55): true] ...; | semmle.label | true |
+| LoopUnrolling.cs:63:17:63:36 | [b (line 55): true] call to method WriteLine | LoopUnrolling.cs:58:9:64:9 | [b (line 55): true] foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:63:17:63:37 | [b (line 55): true] ...; | LoopUnrolling.cs:63:35:63:35 | [b (line 55): true] access to local variable x | semmle.label | successor |
+| LoopUnrolling.cs:63:35:63:35 | [b (line 55): true] access to local variable x | LoopUnrolling.cs:63:17:63:36 | [b (line 55): true] call to method WriteLine | semmle.label | successor |
+| LoopUnrolling.cs:67:10:67:11 | enter M8 | LoopUnrolling.cs:68:5:74:5 | {...} | semmle.label | successor |
+| LoopUnrolling.cs:68:5:74:5 | {...} | LoopUnrolling.cs:69:9:70:19 | if (...) ... | semmle.label | successor |
+| LoopUnrolling.cs:69:9:70:19 | if (...) ... | LoopUnrolling.cs:69:13:69:23 | !... | semmle.label | successor |
+| LoopUnrolling.cs:69:13:69:23 | !... | LoopUnrolling.cs:69:14:69:17 | access to parameter args | semmle.label | successor |
+| LoopUnrolling.cs:69:14:69:17 | access to parameter args | LoopUnrolling.cs:69:14:69:23 | call to method Any | semmle.label | successor |
+| LoopUnrolling.cs:69:14:69:23 | call to method Any | LoopUnrolling.cs:70:13:70:19 | return ...; | semmle.label | false |
+| LoopUnrolling.cs:69:14:69:23 | call to method Any | LoopUnrolling.cs:71:9:71:21 | ...; | semmle.label | true |
+| LoopUnrolling.cs:70:13:70:19 | return ...; | LoopUnrolling.cs:67:10:67:11 | exit M8 | semmle.label | return |
+| LoopUnrolling.cs:71:9:71:12 | access to parameter args | LoopUnrolling.cs:71:9:71:20 | call to method Clear | semmle.label | successor |
+| LoopUnrolling.cs:71:9:71:20 | call to method Clear | LoopUnrolling.cs:72:28:72:31 | access to parameter args | semmle.label | successor |
+| LoopUnrolling.cs:71:9:71:21 | ...; | LoopUnrolling.cs:71:9:71:12 | access to parameter args | semmle.label | successor |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:67:10:67:11 | exit M8 | semmle.label | empty |
+| LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | LoopUnrolling.cs:72:21:72:23 | String arg | semmle.label | non-empty |
+| LoopUnrolling.cs:72:21:72:23 | String arg | LoopUnrolling.cs:73:13:73:35 | ...; | semmle.label | successor |
+| LoopUnrolling.cs:72:28:72:31 | access to parameter args | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:73:13:73:34 | call to method WriteLine | LoopUnrolling.cs:72:9:73:35 | foreach (... ... in ...) ... | semmle.label | successor |
+| LoopUnrolling.cs:73:13:73:35 | ...; | LoopUnrolling.cs:73:31:73:33 | access to local variable arg | semmle.label | successor |
+| LoopUnrolling.cs:73:31:73:33 | access to local variable arg | LoopUnrolling.cs:73:13:73:34 | call to method WriteLine | semmle.label | successor |
 | NullCoalescing.cs:3:9:3:10 | enter M1 | NullCoalescing.cs:3:23:3:28 | ... ?? ... | semmle.label | successor |
 | NullCoalescing.cs:3:23:3:23 | access to parameter i | NullCoalescing.cs:3:9:3:10 | exit M1 | semmle.label | non-null |
 | NullCoalescing.cs:3:23:3:23 | access to parameter i | NullCoalescing.cs:3:28:3:28 | 0 | semmle.label | null |
--- a/csharp/ql/test/library-tests/controlflow/graph/Nodes.expected
+++ b/csharp/ql/test/library-tests/controlflow/graph/Nodes.expected
@@ -222,6 +222,26 @@ booleanNode
 | Conditions.cs:137:21:137:37 | [Field1 (line 129): true, Field2 (line 129): true] call to method ToString | Field2 (line 129): true |
 | Conditions.cs:137:21:137:38 | [Field1 (line 129): true, Field2 (line 129): true] ...; | Field1 (line 129): true |
 | Conditions.cs:137:21:137:38 | [Field1 (line 129): true, Field2 (line 129): true] ...; | Field2 (line 129): true |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): false] foreach (... ... in ...) ... | b (line 55): false |
+| LoopUnrolling.cs:58:9:64:9 | [b (line 55): true] foreach (... ... in ...) ... | b (line 55): true |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): false] String x | b (line 55): false |
+| LoopUnrolling.cs:58:21:58:21 | [b (line 55): true] String x | b (line 55): true |
+| LoopUnrolling.cs:59:9:64:9 | [b (line 55): false] {...} | b (line 55): false |
+| LoopUnrolling.cs:59:9:64:9 | [b (line 55): true] {...} | b (line 55): true |
+| LoopUnrolling.cs:60:13:61:37 | [b (line 55): false] if (...) ... | b (line 55): false |
+| LoopUnrolling.cs:60:13:61:37 | [b (line 55): true] if (...) ... | b (line 55): true |
+| LoopUnrolling.cs:60:17:60:17 | [b (line 55): false] access to parameter b | b (line 55): false |
+| LoopUnrolling.cs:60:17:60:17 | [b (line 55): true] access to parameter b | b (line 55): true |
+| LoopUnrolling.cs:61:17:61:36 | [b (line 55): true] call to method WriteLine | b (line 55): true |
+| LoopUnrolling.cs:61:17:61:37 | [b (line 55): true] ...; | b (line 55): true |
+| LoopUnrolling.cs:61:35:61:35 | [b (line 55): true] access to local variable x | b (line 55): true |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): false] if (...) ... | b (line 55): false |
+| LoopUnrolling.cs:62:13:63:37 | [b (line 55): true] if (...) ... | b (line 55): true |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): false] access to parameter b | b (line 55): false |
+| LoopUnrolling.cs:62:17:62:17 | [b (line 55): true] access to parameter b | b (line 55): true |
+| LoopUnrolling.cs:63:17:63:36 | [b (line 55): true] call to method WriteLine | b (line 55): true |
+| LoopUnrolling.cs:63:17:63:37 | [b (line 55): true] ...; | b (line 55): true |
+| LoopUnrolling.cs:63:35:63:35 | [b (line 55): true] access to local variable x | b (line 55): true |
 finallyNode
 | BreakInTry.cs:30:13:33:13 | [finally: break] {...} | BreakInTry.cs:24:13:33:13 | try {...} ... |
 | BreakInTry.cs:31:17:32:21 | [finally: break] if (...) ... | BreakInTry.cs:24:13:33:13 | try {...} ... |
@@ -621,6 +641,14 @@ entryPoint
 | Initializers.cs:29:9:29:11 | Sub | Initializers.cs:29:17:29:20 | call to constructor NoConstructor |
 | Initializers.cs:31:9:31:11 | Sub | Initializers.cs:31:22:31:25 | call to constructor Sub |
 | Initializers.cs:33:9:33:11 | Sub | Initializers.cs:20:23:20:23 | this access |
+| LoopUnrolling.cs:7:10:7:11 | M1 | LoopUnrolling.cs:8:5:13:5 | {...} |
+| LoopUnrolling.cs:15:10:15:11 | M2 | LoopUnrolling.cs:16:5:20:5 | {...} |
+| LoopUnrolling.cs:22:10:22:11 | M3 | LoopUnrolling.cs:23:5:27:5 | {...} |
+| LoopUnrolling.cs:29:10:29:11 | M4 | LoopUnrolling.cs:30:5:34:5 | {...} |
+| LoopUnrolling.cs:36:10:36:11 | M5 | LoopUnrolling.cs:37:5:43:5 | {...} |
+| LoopUnrolling.cs:45:10:45:11 | M6 | LoopUnrolling.cs:46:5:53:5 | {...} |
+| LoopUnrolling.cs:55:10:55:11 | M7 | LoopUnrolling.cs:56:5:65:5 | {...} |
+| LoopUnrolling.cs:67:10:67:11 | M8 | LoopUnrolling.cs:68:5:74:5 | {...} |
 | NullCoalescing.cs:3:9:3:10 | M1 | NullCoalescing.cs:3:23:3:28 | ... ?? ... |
 | NullCoalescing.cs:5:9:5:10 | M2 | NullCoalescing.cs:5:24:5:43 | ... ? ... : ... |
 | NullCoalescing.cs:7:12:7:13 | M3 | NullCoalescing.cs:7:40:7:53 | ... ?? ... |
--- a/csharp/ql/test/library-tests/controlflow/guards/AbstractValue.expected
+++ b/csharp/ql/test/library-tests/controlflow/guards/AbstractValue.expected
@@ -0,0 +1,286 @@
+abstractValue
+| 0 | Collections.cs:12:32:12:32 | 0 |
+| 0 | Collections.cs:14:28:14:28 | 0 |
+| 0 | Collections.cs:16:27:16:27 | 0 |
+| 0 | Collections.cs:17:28:17:28 | 0 |
+| 0 | Collections.cs:23:31:23:31 | 0 |
+| 0 | Collections.cs:25:27:25:27 | 0 |
+| 0 | Collections.cs:27:26:27:26 | 0 |
+| 0 | Collections.cs:28:27:28:27 | 0 |
+| 0 | Collections.cs:34:33:34:33 | 0 |
+| 0 | Collections.cs:36:29:36:29 | 0 |
+| 0 | Collections.cs:38:28:38:28 | 0 |
+| 0 | Collections.cs:39:29:39:29 | 0 |
+| 0 | Collections.cs:50:27:50:27 | 0 |
+| 0 | Collections.cs:57:24:57:24 | 0 |
+| 0 | Collections.cs:65:24:65:24 | 0 |
+| 0 | Collections.cs:76:36:76:36 | 0 |
+| 0 | Collections.cs:78:36:78:36 | 0 |
+| 0 | Collections.cs:80:35:80:35 | 0 |
+| 0 | Collections.cs:81:36:81:36 | 0 |
+| 0 | Collections.cs:87:17:87:31 | 0 |
+| 0 | Guards.cs:12:24:12:24 | 0 |
+| 0 | Guards.cs:78:26:78:26 | 0 |
+| 0 | Guards.cs:80:25:80:25 | 0 |
+| 0 | Guards.cs:82:26:82:26 | 0 |
+| 0 | Guards.cs:92:30:92:30 | 0 |
+| 0 | Guards.cs:241:17:241:17 | 0 |
+| 0 | Guards.cs:255:17:255:19 | access to constant A |
+| 0 | Guards.cs:298:21:298:21 | 0 |
+| 0 | Guards.cs:310:21:310:21 | 0 |
+| 0 | Guards.cs:317:17:317:17 | 0 |
+| 0 | Guards.cs:322:18:322:18 | 0 |
+| 0 | Guards.cs:329:17:329:19 | access to constant A |
+| 0 | Guards.cs:334:20:334:20 | 0 |
+| 0 | Splitting.cs:136:20:136:20 | 0 |
+| 1 | Collections.cs:13:28:13:28 | 1 |
+| 1 | Collections.cs:15:28:15:28 | 1 |
+| 1 | Collections.cs:18:28:18:28 | 1 |
+| 1 | Collections.cs:24:27:24:27 | 1 |
+| 1 | Collections.cs:26:27:26:27 | 1 |
+| 1 | Collections.cs:29:27:29:27 | 1 |
+| 1 | Collections.cs:35:29:35:29 | 1 |
+| 1 | Collections.cs:37:29:37:29 | 1 |
+| 1 | Collections.cs:40:29:40:29 | 1 |
+| 1 | Collections.cs:77:36:77:36 | 1 |
+| 1 | Collections.cs:79:36:79:36 | 1 |
+| 1 | Collections.cs:82:36:82:36 | 1 |
+| 1 | Collections.cs:89:13:89:32 | 1 |
+| 1 | Guards.cs:92:25:92:25 | 1 |
+| 1 | Guards.cs:243:17:243:17 | 1 |
+| 1 | Guards.cs:246:18:246:18 | 1 |
+| 1 | Guards.cs:257:17:257:19 | access to constant B |
+| 1 | Guards.cs:260:18:260:20 | access to constant B |
+| 1 | Guards.cs:299:18:299:18 | 1 |
+| 1 | Guards.cs:311:18:311:18 | 1 |
+| 1 | Guards.cs:319:17:319:17 | 1 |
+| 1 | Guards.cs:322:13:322:13 | 1 |
+| 1 | Guards.cs:323:18:323:18 | 1 |
+| 1 | Guards.cs:331:17:331:19 | access to constant B |
+| 1 | Guards.cs:334:13:334:15 | access to constant B |
+| 1 | Guards.cs:335:18:335:18 | 1 |
+| 3 | Collections.cs:55:13:55:41 | 3 |
+| 3 | Collections.cs:63:17:63:45 | 3 |
+| 10 | Guards.cs:84:25:84:26 | 10 |
+| 10 | Guards.cs:86:26:86:27 | 10 |
+| empty | Collections.cs:54:13:54:16 | access to parameter args |
+| empty | Collections.cs:57:9:57:25 | ... = ... |
+| empty | Collections.cs:57:13:57:25 | array creation of type String[] |
+| empty | Collections.cs:58:9:58:13 | ... = ... |
+| empty | Collections.cs:58:13:58:13 | access to local variable x |
+| empty | Collections.cs:65:13:65:13 | access to local variable x |
+| empty | Collections.cs:87:17:87:31 | array creation of type String[] |
+| empty | Collections.cs:87:30:87:31 | { ..., ... } |
+| empty | Collections.cs:88:22:88:23 | { ..., ... } |
+| false | Guards.cs:178:16:178:20 | false |
+| false | Guards.cs:181:52:181:56 | false |
+| false | Guards.cs:217:18:217:22 | false |
+| false | Guards.cs:228:18:228:22 | false |
+| false | Guards.cs:295:18:295:22 | false |
+| false | Guards.cs:305:18:305:22 | false |
+| non-empty | Collections.cs:55:9:55:41 | ... = ... |
+| non-empty | Collections.cs:55:13:55:41 | array creation of type String[] |
+| non-empty | Collections.cs:55:25:55:41 | { ..., ... } |
+| non-empty | Collections.cs:56:9:56:13 | ... = ... |
+| non-empty | Collections.cs:56:13:56:13 | access to local variable x |
+| non-empty | Collections.cs:63:17:63:45 | array creation of type String[] |
+| non-empty | Collections.cs:63:29:63:45 | { ..., ... } |
+| non-empty | Collections.cs:68:13:68:13 | access to local variable x |
+| non-empty | Collections.cs:89:9:89:32 | ... = ... |
+| non-empty | Collections.cs:89:13:89:32 | array creation of type String[] |
+| non-empty | Collections.cs:89:26:89:32 | { ..., ... } |
+| non-empty | Collections.cs:90:22:90:28 | { ..., ... } |
+| non-null | Assert.cs:9:31:9:32 | "" |
+| non-null | Assert.cs:16:31:16:32 | "" |
+| non-null | Assert.cs:23:31:23:32 | "" |
+| non-null | Assert.cs:30:31:30:32 | "" |
+| non-null | Assert.cs:37:31:37:32 | "" |
+| non-null | Assert.cs:44:31:44:32 | "" |
+| non-null | Assert.cs:51:31:51:32 | "" |
+| non-null | Assert.cs:58:31:58:32 | "" |
+| non-null | Assert.cs:65:31:65:32 | "" |
+| non-null | Assert.cs:72:31:72:32 | "" |
+| non-null | Assert.cs:79:31:79:32 | "" |
+| non-null | Collections.cs:55:9:55:41 | ... = ... |
+| non-null | Collections.cs:55:13:55:41 | array creation of type String[] |
+| non-null | Collections.cs:55:27:55:29 | "a" |
+| non-null | Collections.cs:55:32:55:34 | "b" |
+| non-null | Collections.cs:55:37:55:39 | "c" |
+| non-null | Collections.cs:56:9:56:13 | ... = ... |
+| non-null | Collections.cs:56:13:56:13 | access to local variable x |
+| non-null | Collections.cs:57:9:57:25 | ... = ... |
+| non-null | Collections.cs:57:13:57:25 | array creation of type String[] |
+| non-null | Collections.cs:58:9:58:13 | ... = ... |
+| non-null | Collections.cs:58:13:58:13 | access to local variable x |
+| non-null | Collections.cs:63:17:63:45 | array creation of type String[] |
+| non-null | Collections.cs:63:31:63:33 | "a" |
+| non-null | Collections.cs:63:36:63:38 | "b" |
+| non-null | Collections.cs:63:41:63:43 | "c" |
+| non-null | Collections.cs:67:19:67:21 | "a" |
+| non-null | Collections.cs:68:19:68:21 | "b" |
+| non-null | Collections.cs:74:40:74:41 | "" |
+| non-null | Collections.cs:87:17:87:31 | array creation of type String[] |
+| non-null | Collections.cs:88:22:88:23 | array creation of type String[] |
+| non-null | Collections.cs:89:9:89:32 | ... = ... |
+| non-null | Collections.cs:89:13:89:32 | array creation of type String[] |
+| non-null | Collections.cs:89:28:89:30 | "a" |
+| non-null | Collections.cs:90:22:90:28 | array creation of type String[] |
+| non-null | Collections.cs:90:24:90:26 | "a" |
+| non-null | Guards.cs:18:31:18:46 | "<empty string>" |
+| non-null | Guards.cs:33:31:33:35 | ... + ... |
+| non-null | Guards.cs:36:32:36:36 | ... + ... |
+| non-null | Guards.cs:39:31:39:35 | ... + ... |
+| non-null | Guards.cs:42:32:42:36 | ... + ... |
+| non-null | Guards.cs:44:13:44:17 | this access |
+| non-null | Guards.cs:45:31:45:42 | object creation of type Guards |
+| non-null | Guards.cs:47:13:47:17 | this access |
+| non-null | Guards.cs:48:31:48:34 | this access |
+| non-null | Guards.cs:61:19:61:33 | object creation of type Exception |
+| non-null | Guards.cs:78:26:78:26 | (...) ... |
+| non-null | Guards.cs:80:25:80:25 | (...) ... |
+| non-null | Guards.cs:82:26:82:26 | (...) ... |
+| non-null | Guards.cs:84:25:84:26 | (...) ... |
+| non-null | Guards.cs:86:26:86:27 | (...) ... |
+| non-null | Guards.cs:92:25:92:25 | (...) ... |
+| non-null | Guards.cs:92:30:92:30 | (...) ... |
+| non-null | Guards.cs:96:18:96:19 | "" |
+| non-null | Guards.cs:105:19:105:33 | object creation of type Exception |
+| non-null | Guards.cs:183:37:183:48 | this access |
+| non-null | Guards.cs:189:14:189:25 | this access |
+| non-null | Guards.cs:191:14:191:25 | this access |
+| non-null | Guards.cs:193:14:193:25 | this access |
+| non-null | Guards.cs:195:13:195:27 | this access |
+| non-null | Guards.cs:197:14:197:29 | this access |
+| non-null | Guards.cs:268:30:268:41 | call to method GetType |
+| non-null | Splitting.cs:33:24:33:25 | "" |
+| non-null | Splitting.cs:132:21:132:29 | this access |
+| null | Assert.cs:9:24:9:27 | null |
+| null | Assert.cs:10:27:10:30 | null |
+| null | Assert.cs:16:24:16:27 | null |
+| null | Assert.cs:23:24:23:27 | null |
+| null | Assert.cs:30:24:30:27 | null |
+| null | Assert.cs:31:28:31:31 | null |
+| null | Assert.cs:37:24:37:27 | null |
+| null | Assert.cs:38:28:38:31 | null |
+| null | Assert.cs:44:24:44:27 | null |
+| null | Assert.cs:45:29:45:32 | null |
+| null | Assert.cs:51:24:51:27 | null |
+| null | Assert.cs:52:29:52:32 | null |
+| null | Assert.cs:58:24:58:27 | null |
+| null | Assert.cs:59:28:59:31 | null |
+| null | Assert.cs:65:24:65:27 | null |
+| null | Assert.cs:66:29:66:32 | null |
+| null | Assert.cs:72:24:72:27 | null |
+| null | Assert.cs:73:28:73:31 | null |
+| null | Assert.cs:79:24:79:27 | null |
+| null | Assert.cs:80:29:80:32 | null |
+| null | Guards.cs:10:21:10:24 | null |
+| null | Guards.cs:24:18:24:21 | null |
+| null | Guards.cs:32:47:32:50 | null |
+| null | Guards.cs:35:18:35:21 | null |
+| null | Guards.cs:35:31:35:34 | null |
+| null | Guards.cs:38:20:38:23 | null |
+| null | Guards.cs:38:33:38:36 | null |
+| null | Guards.cs:41:22:41:25 | null |
+| null | Guards.cs:41:35:41:38 | null |
+| null | Guards.cs:44:22:44:25 | null |
+| null | Guards.cs:47:22:47:25 | null |
+| null | Guards.cs:53:24:53:27 | null |
+| null | Guards.cs:60:42:60:45 | null |
+| null | Guards.cs:68:21:68:24 | null |
+| null | Guards.cs:71:13:71:20 | ... = ... |
+| null | Guards.cs:71:17:71:20 | null |
+| null | Guards.cs:72:31:72:31 | access to parameter s |
+| null | Guards.cs:88:26:88:29 | null |
+| null | Guards.cs:104:42:104:45 | null |
+| null | Guards.cs:106:9:106:25 | ... = ... |
+| null | Guards.cs:106:22:106:25 | null |
+| null | Guards.cs:115:52:115:55 | null |
+| null | Guards.cs:117:9:117:25 | ... = ... |
+| null | Guards.cs:117:22:117:25 | null |
+| null | Guards.cs:172:38:172:41 | null |
+| null | Guards.cs:181:38:181:41 | null |
+| null | Guards.cs:185:42:185:45 | null |
+| null | Guards.cs:203:18:203:21 | null |
+| null | Splitting.cs:12:22:12:25 | null |
+| null | Splitting.cs:22:22:22:25 | null |
+| null | Splitting.cs:32:22:32:25 | null |
+| null | Splitting.cs:41:18:41:21 | null |
+| null | Splitting.cs:54:18:54:21 | null |
+| null | Splitting.cs:65:18:65:21 | null |
+| null | Splitting.cs:76:18:76:21 | null |
+| null | Splitting.cs:87:31:87:34 | null |
+| null | Splitting.cs:97:31:97:34 | null |
+| null | Splitting.cs:105:27:105:30 | null |
+| null | Splitting.cs:116:27:116:30 | null |
+| null | Splitting.cs:125:20:125:23 | null |
+| null | Splitting.cs:128:22:128:25 | null |
+| true | Guards.cs:177:20:177:23 | true |
+| true | Guards.cs:181:45:181:48 | true |
+| true | Guards.cs:185:49:185:52 | true |
+| true | Guards.cs:185:56:185:59 | true |
+| true | Guards.cs:215:18:215:21 | true |
+| true | Guards.cs:220:18:220:21 | true |
+| true | Guards.cs:230:18:230:21 | true |
+| true | Guards.cs:233:18:233:21 | true |
+| true | Guards.cs:293:18:293:21 | true |
+| true | Guards.cs:298:13:298:16 | true |
+| true | Guards.cs:307:18:307:21 | true |
+| true | Guards.cs:310:13:310:16 | true |
+dualValue
+| empty | non-empty |
+| false | true |
+| match 1 | non-match 1 |
+| match 1 | non-match 1 |
+| match "" | non-match "" |
+| match "" | non-match "" |
+| match Action<String> a | non-match Action<String> a |
+| match Action<String> a | non-match Action<String> a |
+| match _ | non-match _ |
+| match _ | non-match _ |
+| match _ | non-match _ |
+| match _ | non-match _ |
+| match _ | non-match _ |
+| match access to constant B | non-match access to constant B |
+| match access to constant B | non-match access to constant B |
+| match access to type Action<Object> | non-match access to type Action<Object> |
+| match access to type Action<Object> | non-match access to type Action<Object> |
+| match null | non-match null |
+| match null | non-match null |
+| match true | non-match true |
+| match true | non-match true |
+| match true | non-match true |
+| match true | non-match true |
+| non-empty | empty |
+| non-match 1 | match 1 |
+| non-match 1 | match 1 |
+| non-match "" | match "" |
+| non-match "" | match "" |
+| non-match Action<String> a | match Action<String> a |
+| non-match Action<String> a | match Action<String> a |
+| non-match _ | match _ |
+| non-match _ | match _ |
+| non-match _ | match _ |
+| non-match _ | match _ |
+| non-match _ | match _ |
+| non-match access to constant B | match access to constant B |
+| non-match access to constant B | match access to constant B |
+| non-match access to type Action<Object> | match access to type Action<Object> |
+| non-match access to type Action<Object> | match access to type Action<Object> |
+| non-match null | match null |
+| non-match null | match null |
+| non-match true | match true |
+| non-match true | match true |
+| non-match true | match true |
+| non-match true | match true |
+| non-null | null |
+| null | non-null |
+| true | false |
+singletonValue
+| 0 |
+| 1 |
+| 3 |
+| 10 |
+| false |
+| null |
+| true |
--- a/csharp/ql/test/library-tests/controlflow/guards/AbstractValue.ql
+++ b/csharp/ql/test/library-tests/controlflow/guards/AbstractValue.ql
@@ -0,0 +1,8 @@
+import csharp
+private import semmle.code.csharp.controlflow.Guards
+
+query predicate abstractValue(AbstractValue value, Expr e) { e = value.getAnExpr() }
+
+query predicate dualValue(AbstractValue value, AbstractValue dual) { dual = value.getDualValue() }
+
+query predicate singletonValue(AbstractValue value) { value.isSingleton() }
--- a/csharp/ql/test/library-tests/controlflow/guards/BooleanGuardedExpr.expected
+++ b/csharp/ql/test/library-tests/controlflow/guards/BooleanGuardedExpr.expected
@@ -15,6 +15,11 @@
 | Assert.cs:80:37:80:37 | access to parameter b | Assert.cs:79:20:79:20 | access to parameter b | Assert.cs:79:20:79:20 | access to parameter b | true |
 | Assert.cs:81:27:81:27 | access to local variable s | Assert.cs:80:24:80:32 | ... != ... | Assert.cs:80:24:80:24 | access to local variable s | false |
 | Assert.cs:81:27:81:27 | access to local variable s | Assert.cs:80:24:80:37 | ... \|\| ... | Assert.cs:80:24:80:24 | access to local variable s | false |
+| Collections.cs:52:17:52:20 | access to parameter args | Collections.cs:50:13:50:27 | ... == ... | Collections.cs:50:13:50:16 | access to parameter args | false |
+| Collections.cs:53:9:53:12 | access to parameter args | Collections.cs:50:13:50:27 | ... == ... | Collections.cs:50:13:50:16 | access to parameter args | false |
+| Collections.cs:54:13:54:16 | access to parameter args | Collections.cs:50:13:50:27 | ... == ... | Collections.cs:50:13:50:16 | access to parameter args | false |
+| Collections.cs:67:13:67:13 | access to local variable x | Collections.cs:65:13:65:24 | ... == ... | Collections.cs:65:13:65:13 | access to local variable x | true |
+| Collections.cs:68:13:68:13 | access to local variable x | Collections.cs:65:13:65:24 | ... == ... | Collections.cs:65:13:65:13 | access to local variable x | true |
 | Guards.cs:12:13:12:13 | access to parameter s | Guards.cs:10:16:10:24 | ... == ... | Guards.cs:10:16:10:16 | access to parameter s | false |
 | Guards.cs:14:31:14:31 | access to parameter s | Guards.cs:10:16:10:24 | ... == ... | Guards.cs:10:16:10:16 | access to parameter s | false |
 | Guards.cs:14:31:14:31 | access to parameter s | Guards.cs:12:13:12:24 | ... > ... | Guards.cs:12:13:12:13 | access to parameter s | true |
--- a/csharp/ql/test/library-tests/controlflow/guards/Collections.cs
+++ b/csharp/ql/test/library-tests/controlflow/guards/Collections.cs
@@ -0,0 +1,93 @@
+// semmle-extractor-options: /r:System.Collections.Specialized.dll /r:System.Collections.dll /r:System.Linq.dll
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.Specialized;
+using System.Linq;
+
+public class Collections
+{
+    void M1(string[] args)
+    {
+        var b = args.Length == 0;
+        b = args.Length == 1;
+        b = args.Length != 0;
+        b = args.Length != 1;
+        b = args.Length > 0;
+        b = args.Length >= 0;
+        b = args.Length >= 1;
+    }
+
+    void M2(ICollection<string> args)
+    {
+        var b = args.Count == 0;
+        b = args.Count == 1;
+        b = args.Count != 0;
+        b = args.Count != 1;
+        b = args.Count > 0;
+        b = args.Count >= 0;
+        b = args.Count >= 1;
+    }
+
+    void M3(string[] args)
+    {
+        var b = args.Count() == 0;
+        b = args.Count() == 1;
+        b = args.Count() != 0;
+        b = args.Count() != 1;
+        b = args.Count() > 0;
+        b = args.Count() >= 0;
+        b = args.Count() >= 1;
+    }
+
+    void M4(string[] args)
+    {
+        var b = args.Any();
+    }
+
+    void M5(List<string> args)
+    {
+        if (args.Count == 0)
+            return;
+        var x = args.ToArray();
+        args.Clear();
+        x = args.ToArray();
+        x = new string[]{ "a", "b", "c" };
+        x = x;
+        x = new string[0];
+        x = x;
+    }
+
+    void M6()
+    {
+        var x = new string[]{ "a", "b", "c" }.ToList();
+        x.Clear();
+        if (x.Count == 0)
+        {
+            x.Add("a");
+            x.Add("b");
+        }
+    }
+
+    void M7(string[] args)
+    {
+        bool IsEmpty(string s) => s == "";
+        var b = args.Any(IsEmpty);
+        b = args.Count(IsEmpty) == 0;
+        b = args.Count(IsEmpty) == 1;
+        b = args.Count(IsEmpty) != 0;
+        b = args.Count(IsEmpty) != 1;
+        b = args.Count(IsEmpty) > 0;
+        b = args.Count(IsEmpty) >= 0;
+        b = args.Count(IsEmpty) >= 1;
+    }
+
+    void M8()
+    {
+        var x = new string[] {};
+        string[] y = {};
+        x = new string[] { "a" };
+        string[] z = { "a" };
+    }
+}
+
--- a/csharp/ql/test/library-tests/controlflow/guards/Collections.expected
+++ b/csharp/ql/test/library-tests/controlflow/guards/Collections.expected
@@ -0,0 +1,37 @@
+| Collections.cs:12:17:12:32 | ... == ... | Collections.cs:12:17:12:20 | access to parameter args | false | false |
+| Collections.cs:12:17:12:32 | ... == ... | Collections.cs:12:17:12:20 | access to parameter args | true | true |
+| Collections.cs:13:13:13:28 | ... == ... | Collections.cs:13:13:13:16 | access to parameter args | true | false |
+| Collections.cs:14:13:14:28 | ... != ... | Collections.cs:14:13:14:16 | access to parameter args | false | true |
+| Collections.cs:14:13:14:28 | ... != ... | Collections.cs:14:13:14:16 | access to parameter args | true | false |
+| Collections.cs:15:13:15:28 | ... != ... | Collections.cs:15:13:15:16 | access to parameter args | false | false |
+| Collections.cs:16:13:16:27 | ... > ... | Collections.cs:16:13:16:16 | access to parameter args | true | false |
+| Collections.cs:18:13:18:28 | ... >= ... | Collections.cs:18:13:18:16 | access to parameter args | true | false |
+| Collections.cs:23:17:23:31 | ... == ... | Collections.cs:23:17:23:20 | access to parameter args | false | false |
+| Collections.cs:23:17:23:31 | ... == ... | Collections.cs:23:17:23:20 | access to parameter args | true | true |
+| Collections.cs:24:13:24:27 | ... == ... | Collections.cs:24:13:24:16 | access to parameter args | true | false |
+| Collections.cs:25:13:25:27 | ... != ... | Collections.cs:25:13:25:16 | access to parameter args | false | true |
+| Collections.cs:25:13:25:27 | ... != ... | Collections.cs:25:13:25:16 | access to parameter args | true | false |
+| Collections.cs:26:13:26:27 | ... != ... | Collections.cs:26:13:26:16 | access to parameter args | false | false |
+| Collections.cs:27:13:27:26 | ... > ... | Collections.cs:27:13:27:16 | access to parameter args | true | false |
+| Collections.cs:29:13:29:27 | ... >= ... | Collections.cs:29:13:29:16 | access to parameter args | true | false |
+| Collections.cs:34:17:34:33 | ... == ... | Collections.cs:34:17:34:20 | access to parameter args | false | false |
+| Collections.cs:34:17:34:33 | ... == ... | Collections.cs:34:17:34:20 | access to parameter args | true | true |
+| Collections.cs:35:13:35:29 | ... == ... | Collections.cs:35:13:35:16 | access to parameter args | true | false |
+| Collections.cs:36:13:36:29 | ... != ... | Collections.cs:36:13:36:16 | access to parameter args | false | true |
+| Collections.cs:36:13:36:29 | ... != ... | Collections.cs:36:13:36:16 | access to parameter args | true | false |
+| Collections.cs:37:13:37:29 | ... != ... | Collections.cs:37:13:37:16 | access to parameter args | false | false |
+| Collections.cs:38:13:38:28 | ... > ... | Collections.cs:38:13:38:16 | access to parameter args | true | false |
+| Collections.cs:40:13:40:29 | ... >= ... | Collections.cs:40:13:40:16 | access to parameter args | true | false |
+| Collections.cs:45:17:45:26 | call to method Any | Collections.cs:45:17:45:20 | access to parameter args | false | true |
+| Collections.cs:45:17:45:26 | call to method Any | Collections.cs:45:17:45:20 | access to parameter args | true | false |
+| Collections.cs:50:13:50:27 | ... == ... | Collections.cs:50:13:50:16 | access to parameter args | false | false |
+| Collections.cs:50:13:50:27 | ... == ... | Collections.cs:50:13:50:16 | access to parameter args | true | true |
+| Collections.cs:65:13:65:24 | ... == ... | Collections.cs:65:13:65:13 | access to local variable x | false | false |
+| Collections.cs:65:13:65:24 | ... == ... | Collections.cs:65:13:65:13 | access to local variable x | true | true |
+| Collections.cs:75:17:75:33 | call to method Any | Collections.cs:75:17:75:20 | access to parameter args | true | false |
+| Collections.cs:76:13:76:36 | ... == ... | Collections.cs:76:13:76:16 | access to parameter args | false | false |
+| Collections.cs:77:13:77:36 | ... == ... | Collections.cs:77:13:77:16 | access to parameter args | true | false |
+| Collections.cs:78:13:78:36 | ... != ... | Collections.cs:78:13:78:16 | access to parameter args | true | false |
+| Collections.cs:79:13:79:36 | ... != ... | Collections.cs:79:13:79:16 | access to parameter args | false | false |
+| Collections.cs:80:13:80:35 | ... > ... | Collections.cs:80:13:80:16 | access to parameter args | true | false |
+| Collections.cs:82:13:82:36 | ... >= ... | Collections.cs:82:13:82:16 | access to parameter args | true | false |
--- a/csharp/ql/test/library-tests/controlflow/guards/Collections.ql
+++ b/csharp/ql/test/library-tests/controlflow/guards/Collections.ql
@@ -0,0 +1,6 @@
+import csharp
+private import semmle.code.csharp.controlflow.Guards
+
+query predicate emptinessCheck(Expr check, CollectionExpr collection, AbstractValue v, boolean isEmpty) {
+  check = collection.getAnEmptinessCheck(v, isEmpty)
+}
--- a/csharp/ql/test/library-tests/controlflow/guards/GuardedControlFlowNode.expected
+++ b/csharp/ql/test/library-tests/controlflow/guards/GuardedControlFlowNode.expected
@@ -30,6 +30,13 @@
 | Assert.cs:81:27:81:27 | access to local variable s | Assert.cs:80:24:80:24 | access to local variable s | Assert.cs:80:24:80:24 | access to local variable s | null |
 | Assert.cs:81:27:81:27 | access to local variable s | Assert.cs:80:24:80:32 | ... != ... | Assert.cs:80:24:80:24 | access to local variable s | false |
 | Assert.cs:81:27:81:27 | access to local variable s | Assert.cs:80:24:80:37 | ... \|\| ... | Assert.cs:80:24:80:24 | access to local variable s | false |
+| Collections.cs:52:17:52:20 | access to parameter args | Collections.cs:50:13:50:16 | access to parameter args | Collections.cs:50:13:50:16 | access to parameter args | non-empty |
+| Collections.cs:52:17:52:20 | access to parameter args | Collections.cs:50:13:50:27 | ... == ... | Collections.cs:50:13:50:16 | access to parameter args | false |
+| Collections.cs:53:9:53:12 | access to parameter args | Collections.cs:50:13:50:27 | ... == ... | Collections.cs:50:13:50:16 | access to parameter args | false |
+| Collections.cs:54:13:54:16 | access to parameter args | Collections.cs:50:13:50:27 | ... == ... | Collections.cs:50:13:50:16 | access to parameter args | false |
+| Collections.cs:67:13:67:13 | access to local variable x | Collections.cs:65:13:65:13 | access to local variable x | Collections.cs:65:13:65:13 | access to local variable x | empty |
+| Collections.cs:67:13:67:13 | access to local variable x | Collections.cs:65:13:65:24 | ... == ... | Collections.cs:65:13:65:13 | access to local variable x | true |
+| Collections.cs:68:13:68:13 | access to local variable x | Collections.cs:65:13:65:24 | ... == ... | Collections.cs:65:13:65:13 | access to local variable x | true |
 | Guards.cs:12:13:12:13 | access to parameter s | Guards.cs:10:16:10:16 | access to parameter s | Guards.cs:10:16:10:16 | access to parameter s | non-null |
 | Guards.cs:12:13:12:13 | access to parameter s | Guards.cs:10:16:10:24 | ... == ... | Guards.cs:10:16:10:16 | access to parameter s | false |
 | Guards.cs:14:31:14:31 | access to parameter s | Guards.cs:10:16:10:16 | access to parameter s | Guards.cs:10:16:10:16 | access to parameter s | non-null |
--- a/csharp/ql/test/library-tests/controlflow/guards/GuardedExpr.expected
+++ b/csharp/ql/test/library-tests/controlflow/guards/GuardedExpr.expected
@@ -30,6 +30,13 @@
 | Assert.cs:81:27:81:27 | access to local variable s | Assert.cs:80:24:80:24 | access to local variable s | Assert.cs:80:24:80:24 | access to local variable s | null |
 | Assert.cs:81:27:81:27 | access to local variable s | Assert.cs:80:24:80:32 | ... != ... | Assert.cs:80:24:80:24 | access to local variable s | false |
 | Assert.cs:81:27:81:27 | access to local variable s | Assert.cs:80:24:80:37 | ... \|\| ... | Assert.cs:80:24:80:24 | access to local variable s | false |
+| Collections.cs:52:17:52:20 | access to parameter args | Collections.cs:50:13:50:16 | access to parameter args | Collections.cs:50:13:50:16 | access to parameter args | non-empty |
+| Collections.cs:52:17:52:20 | access to parameter args | Collections.cs:50:13:50:27 | ... == ... | Collections.cs:50:13:50:16 | access to parameter args | false |
+| Collections.cs:53:9:53:12 | access to parameter args | Collections.cs:50:13:50:27 | ... == ... | Collections.cs:50:13:50:16 | access to parameter args | false |
+| Collections.cs:54:13:54:16 | access to parameter args | Collections.cs:50:13:50:27 | ... == ... | Collections.cs:50:13:50:16 | access to parameter args | false |
+| Collections.cs:67:13:67:13 | access to local variable x | Collections.cs:65:13:65:13 | access to local variable x | Collections.cs:65:13:65:13 | access to local variable x | empty |
+| Collections.cs:67:13:67:13 | access to local variable x | Collections.cs:65:13:65:24 | ... == ... | Collections.cs:65:13:65:13 | access to local variable x | true |
+| Collections.cs:68:13:68:13 | access to local variable x | Collections.cs:65:13:65:24 | ... == ... | Collections.cs:65:13:65:13 | access to local variable x | true |
 | Guards.cs:12:13:12:13 | access to parameter s | Guards.cs:10:16:10:16 | access to parameter s | Guards.cs:10:16:10:16 | access to parameter s | non-null |
 | Guards.cs:12:13:12:13 | access to parameter s | Guards.cs:10:16:10:24 | ... == ... | Guards.cs:10:16:10:16 | access to parameter s | false |
 | Guards.cs:14:31:14:31 | access to parameter s | Guards.cs:10:16:10:16 | access to parameter s | Guards.cs:10:16:10:16 | access to parameter s | non-null |
--- a/csharp/ql/test/library-tests/controlflow/guards/Implications.expected
+++ b/csharp/ql/test/library-tests/controlflow/guards/Implications.expected
@@ -1,9 +1,9 @@
-| Assert.cs:9:16:9:32 | String s = ... | non-null | Assert.cs:9:16:9:16 | access to local variable s | non-null |
-| Assert.cs:9:16:9:32 | String s = ... | null | Assert.cs:9:16:9:16 | access to local variable s | null |
 | Assert.cs:9:20:9:32 | ... ? ... : ... | non-null | Assert.cs:9:20:9:20 | access to parameter b | false |
 | Assert.cs:9:20:9:32 | ... ? ... : ... | non-null | Assert.cs:9:31:9:32 | "" | non-null |
 | Assert.cs:9:20:9:32 | ... ? ... : ... | null | Assert.cs:9:20:9:20 | access to parameter b | true |
 | Assert.cs:9:20:9:32 | ... ? ... : ... | null | Assert.cs:9:24:9:27 | null | null |
+| Assert.cs:10:22:10:22 | access to local variable s | empty | Assert.cs:9:20:9:32 | ... ? ... : ... | empty |
+| Assert.cs:10:22:10:22 | access to local variable s | non-empty | Assert.cs:9:20:9:32 | ... ? ... : ... | non-empty |
 | Assert.cs:10:22:10:22 | access to local variable s | non-null | Assert.cs:9:20:9:32 | ... ? ... : ... | non-null |
 | Assert.cs:10:22:10:22 | access to local variable s | null | Assert.cs:9:20:9:32 | ... ? ... : ... | null |
 | Assert.cs:10:22:10:30 | ... != ... | false | Assert.cs:9:20:9:20 | access to parameter b | true |
@@ -12,32 +12,32 @@
 | Assert.cs:10:22:10:30 | ... != ... | true | Assert.cs:10:22:10:22 | access to local variable s | non-null |
 | Assert.cs:11:27:11:27 | access to local variable s | non-null | Assert.cs:9:20:9:32 | ... ? ... : ... | non-null |
 | Assert.cs:11:27:11:27 | access to local variable s | null | Assert.cs:9:20:9:32 | ... ? ... : ... | null |
-| Assert.cs:16:16:16:32 | String s = ... | non-null | Assert.cs:16:16:16:16 | access to local variable s | non-null |
-| Assert.cs:16:16:16:32 | String s = ... | null | Assert.cs:16:16:16:16 | access to local variable s | null |
 | Assert.cs:16:20:16:32 | ... ? ... : ... | non-null | Assert.cs:16:20:16:20 | access to parameter b | false |
 | Assert.cs:16:20:16:32 | ... ? ... : ... | non-null | Assert.cs:16:31:16:32 | "" | non-null |
 | Assert.cs:16:20:16:32 | ... ? ... : ... | null | Assert.cs:16:20:16:20 | access to parameter b | true |
 | Assert.cs:16:20:16:32 | ... ? ... : ... | null | Assert.cs:16:24:16:27 | null | null |
+| Assert.cs:17:23:17:23 | access to local variable s | empty | Assert.cs:16:20:16:32 | ... ? ... : ... | empty |
+| Assert.cs:17:23:17:23 | access to local variable s | non-empty | Assert.cs:16:20:16:32 | ... ? ... : ... | non-empty |
 | Assert.cs:17:23:17:23 | access to local variable s | non-null | Assert.cs:16:20:16:32 | ... ? ... : ... | non-null |
 | Assert.cs:17:23:17:23 | access to local variable s | null | Assert.cs:16:20:16:32 | ... ? ... : ... | null |
 | Assert.cs:18:27:18:27 | access to local variable s | non-null | Assert.cs:16:20:16:32 | ... ? ... : ... | non-null |
 | Assert.cs:18:27:18:27 | access to local variable s | null | Assert.cs:16:20:16:32 | ... ? ... : ... | null |
-| Assert.cs:23:16:23:32 | String s = ... | non-null | Assert.cs:23:16:23:16 | access to local variable s | non-null |
-| Assert.cs:23:16:23:32 | String s = ... | null | Assert.cs:23:16:23:16 | access to local variable s | null |
 | Assert.cs:23:20:23:32 | ... ? ... : ... | non-null | Assert.cs:23:20:23:20 | access to parameter b | false |
 | Assert.cs:23:20:23:32 | ... ? ... : ... | non-null | Assert.cs:23:31:23:32 | "" | non-null |
 | Assert.cs:23:20:23:32 | ... ? ... : ... | null | Assert.cs:23:20:23:20 | access to parameter b | true |
 | Assert.cs:23:20:23:32 | ... ? ... : ... | null | Assert.cs:23:24:23:27 | null | null |
+| Assert.cs:24:26:24:26 | access to local variable s | empty | Assert.cs:23:20:23:32 | ... ? ... : ... | empty |
+| Assert.cs:24:26:24:26 | access to local variable s | non-empty | Assert.cs:23:20:23:32 | ... ? ... : ... | non-empty |
 | Assert.cs:24:26:24:26 | access to local variable s | non-null | Assert.cs:23:20:23:32 | ... ? ... : ... | non-null |
 | Assert.cs:24:26:24:26 | access to local variable s | null | Assert.cs:23:20:23:32 | ... ? ... : ... | null |
 | Assert.cs:25:27:25:27 | access to local variable s | non-null | Assert.cs:23:20:23:32 | ... ? ... : ... | non-null |
 | Assert.cs:25:27:25:27 | access to local variable s | null | Assert.cs:23:20:23:32 | ... ? ... : ... | null |
-| Assert.cs:30:16:30:32 | String s = ... | non-null | Assert.cs:30:16:30:16 | access to local variable s | non-null |
-| Assert.cs:30:16:30:32 | String s = ... | null | Assert.cs:30:16:30:16 | access to local variable s | null |
 | Assert.cs:30:20:30:32 | ... ? ... : ... | non-null | Assert.cs:30:20:30:20 | access to parameter b | false |
 | Assert.cs:30:20:30:32 | ... ? ... : ... | non-null | Assert.cs:30:31:30:32 | "" | non-null |
 | Assert.cs:30:20:30:32 | ... ? ... : ... | null | Assert.cs:30:20:30:20 | access to parameter b | true |
 | Assert.cs:30:20:30:32 | ... ? ... : ... | null | Assert.cs:30:24:30:27 | null | null |
+| Assert.cs:31:23:31:23 | access to local variable s | empty | Assert.cs:30:20:30:32 | ... ? ... : ... | empty |
+| Assert.cs:31:23:31:23 | access to local variable s | non-empty | Assert.cs:30:20:30:32 | ... ? ... : ... | non-empty |
 | Assert.cs:31:23:31:23 | access to local variable s | non-null | Assert.cs:30:20:30:32 | ... ? ... : ... | non-null |
 | Assert.cs:31:23:31:23 | access to local variable s | null | Assert.cs:30:20:30:32 | ... ? ... : ... | null |
 | Assert.cs:31:23:31:31 | ... == ... | false | Assert.cs:30:20:30:20 | access to parameter b | false |
@@ -46,12 +46,12 @@
 | Assert.cs:31:23:31:31 | ... == ... | true | Assert.cs:31:23:31:23 | access to local variable s | null |
 | Assert.cs:32:27:32:27 | access to local variable s | non-null | Assert.cs:30:20:30:32 | ... ? ... : ... | non-null |
 | Assert.cs:32:27:32:27 | access to local variable s | null | Assert.cs:30:20:30:32 | ... ? ... : ... | null |
-| Assert.cs:37:16:37:32 | String s = ... | non-null | Assert.cs:37:16:37:16 | access to local variable s | non-null |
-| Assert.cs:37:16:37:32 | String s = ... | null | Assert.cs:37:16:37:16 | access to local variable s | null |
 | Assert.cs:37:20:37:32 | ... ? ... : ... | non-null | Assert.cs:37:20:37:20 | access to parameter b | false |
 | Assert.cs:37:20:37:32 | ... ? ... : ... | non-null | Assert.cs:37:31:37:32 | "" | non-null |
 | Assert.cs:37:20:37:32 | ... ? ... : ... | null | Assert.cs:37:20:37:20 | access to parameter b | true |
 | Assert.cs:37:20:37:32 | ... ? ... : ... | null | Assert.cs:37:24:37:27 | null | null |
+| Assert.cs:38:23:38:23 | access to local variable s | empty | Assert.cs:37:20:37:32 | ... ? ... : ... | empty |
+| Assert.cs:38:23:38:23 | access to local variable s | non-empty | Assert.cs:37:20:37:32 | ... ? ... : ... | non-empty |
 | Assert.cs:38:23:38:23 | access to local variable s | non-null | Assert.cs:37:20:37:32 | ... ? ... : ... | non-null |
 | Assert.cs:38:23:38:23 | access to local variable s | null | Assert.cs:37:20:37:32 | ... ? ... : ... | null |
 | Assert.cs:38:23:38:31 | ... != ... | false | Assert.cs:37:20:37:20 | access to parameter b | true |
@@ -60,12 +60,12 @@
 | Assert.cs:38:23:38:31 | ... != ... | true | Assert.cs:38:23:38:23 | access to local variable s | non-null |
 | Assert.cs:39:27:39:27 | access to local variable s | non-null | Assert.cs:37:20:37:32 | ... ? ... : ... | non-null |
 | Assert.cs:39:27:39:27 | access to local variable s | null | Assert.cs:37:20:37:32 | ... ? ... : ... | null |
-| Assert.cs:44:16:44:32 | String s = ... | non-null | Assert.cs:44:16:44:16 | access to local variable s | non-null |
-| Assert.cs:44:16:44:32 | String s = ... | null | Assert.cs:44:16:44:16 | access to local variable s | null |
 | Assert.cs:44:20:44:32 | ... ? ... : ... | non-null | Assert.cs:44:20:44:20 | access to parameter b | false |
 | Assert.cs:44:20:44:32 | ... ? ... : ... | non-null | Assert.cs:44:31:44:32 | "" | non-null |
 | Assert.cs:44:20:44:32 | ... ? ... : ... | null | Assert.cs:44:20:44:20 | access to parameter b | true |
 | Assert.cs:44:20:44:32 | ... ? ... : ... | null | Assert.cs:44:24:44:27 | null | null |
+| Assert.cs:45:24:45:24 | access to local variable s | empty | Assert.cs:44:20:44:32 | ... ? ... : ... | empty |
+| Assert.cs:45:24:45:24 | access to local variable s | non-empty | Assert.cs:44:20:44:32 | ... ? ... : ... | non-empty |
 | Assert.cs:45:24:45:24 | access to local variable s | non-null | Assert.cs:44:20:44:32 | ... ? ... : ... | non-null |
 | Assert.cs:45:24:45:24 | access to local variable s | null | Assert.cs:44:20:44:32 | ... ? ... : ... | null |
 | Assert.cs:45:24:45:32 | ... != ... | false | Assert.cs:44:20:44:20 | access to parameter b | true |
@@ -74,12 +74,12 @@
 | Assert.cs:45:24:45:32 | ... != ... | true | Assert.cs:45:24:45:24 | access to local variable s | non-null |
 | Assert.cs:46:27:46:27 | access to local variable s | non-null | Assert.cs:44:20:44:32 | ... ? ... : ... | non-null |
 | Assert.cs:46:27:46:27 | access to local variable s | null | Assert.cs:44:20:44:32 | ... ? ... : ... | null |
-| Assert.cs:51:16:51:32 | String s = ... | non-null | Assert.cs:51:16:51:16 | access to local variable s | non-null |
-| Assert.cs:51:16:51:32 | String s = ... | null | Assert.cs:51:16:51:16 | access to local variable s | null |
 | Assert.cs:51:20:51:32 | ... ? ... : ... | non-null | Assert.cs:51:20:51:20 | access to parameter b | false |
 | Assert.cs:51:20:51:32 | ... ? ... : ... | non-null | Assert.cs:51:31:51:32 | "" | non-null |
 | Assert.cs:51:20:51:32 | ... ? ... : ... | null | Assert.cs:51:20:51:20 | access to parameter b | true |
 | Assert.cs:51:20:51:32 | ... ? ... : ... | null | Assert.cs:51:24:51:27 | null | null |
+| Assert.cs:52:24:52:24 | access to local variable s | empty | Assert.cs:51:20:51:32 | ... ? ... : ... | empty |
+| Assert.cs:52:24:52:24 | access to local variable s | non-empty | Assert.cs:51:20:51:32 | ... ? ... : ... | non-empty |
 | Assert.cs:52:24:52:24 | access to local variable s | non-null | Assert.cs:51:20:51:32 | ... ? ... : ... | non-null |
 | Assert.cs:52:24:52:24 | access to local variable s | null | Assert.cs:51:20:51:32 | ... ? ... : ... | null |
 | Assert.cs:52:24:52:32 | ... == ... | false | Assert.cs:51:20:51:20 | access to parameter b | false |
@@ -88,12 +88,12 @@
 | Assert.cs:52:24:52:32 | ... == ... | true | Assert.cs:52:24:52:24 | access to local variable s | null |
 | Assert.cs:53:27:53:27 | access to local variable s | non-null | Assert.cs:51:20:51:32 | ... ? ... : ... | non-null |
 | Assert.cs:53:27:53:27 | access to local variable s | null | Assert.cs:51:20:51:32 | ... ? ... : ... | null |
-| Assert.cs:58:16:58:32 | String s = ... | non-null | Assert.cs:58:16:58:16 | access to local variable s | non-null |
-| Assert.cs:58:16:58:32 | String s = ... | null | Assert.cs:58:16:58:16 | access to local variable s | null |
 | Assert.cs:58:20:58:32 | ... ? ... : ... | non-null | Assert.cs:58:20:58:20 | access to parameter b | false |
 | Assert.cs:58:20:58:32 | ... ? ... : ... | non-null | Assert.cs:58:31:58:32 | "" | non-null |
 | Assert.cs:58:20:58:32 | ... ? ... : ... | null | Assert.cs:58:20:58:20 | access to parameter b | true |
 | Assert.cs:58:20:58:32 | ... ? ... : ... | null | Assert.cs:58:24:58:27 | null | null |
+| Assert.cs:59:23:59:23 | access to local variable s | empty | Assert.cs:58:20:58:32 | ... ? ... : ... | empty |
+| Assert.cs:59:23:59:23 | access to local variable s | non-empty | Assert.cs:58:20:58:32 | ... ? ... : ... | non-empty |
 | Assert.cs:59:23:59:23 | access to local variable s | non-null | Assert.cs:58:20:58:32 | ... ? ... : ... | non-null |
 | Assert.cs:59:23:59:23 | access to local variable s | null | Assert.cs:58:20:58:32 | ... ? ... : ... | null |
 | Assert.cs:59:23:59:31 | ... != ... | false | Assert.cs:58:20:58:20 | access to parameter b | true |
@@ -104,12 +104,12 @@
 | Assert.cs:59:23:59:36 | ... && ... | true | Assert.cs:59:36:59:36 | access to parameter b | true |
 | Assert.cs:60:27:60:27 | access to local variable s | non-null | Assert.cs:58:20:58:32 | ... ? ... : ... | non-null |
 | Assert.cs:60:27:60:27 | access to local variable s | null | Assert.cs:58:20:58:32 | ... ? ... : ... | null |
-| Assert.cs:65:16:65:32 | String s = ... | non-null | Assert.cs:65:16:65:16 | access to local variable s | non-null |
-| Assert.cs:65:16:65:32 | String s = ... | null | Assert.cs:65:16:65:16 | access to local variable s | null |
 | Assert.cs:65:20:65:32 | ... ? ... : ... | non-null | Assert.cs:65:20:65:20 | access to parameter b | false |
 | Assert.cs:65:20:65:32 | ... ? ... : ... | non-null | Assert.cs:65:31:65:32 | "" | non-null |
 | Assert.cs:65:20:65:32 | ... ? ... : ... | null | Assert.cs:65:20:65:20 | access to parameter b | true |
 | Assert.cs:65:20:65:32 | ... ? ... : ... | null | Assert.cs:65:24:65:27 | null | null |
+| Assert.cs:66:24:66:24 | access to local variable s | empty | Assert.cs:65:20:65:32 | ... ? ... : ... | empty |
+| Assert.cs:66:24:66:24 | access to local variable s | non-empty | Assert.cs:65:20:65:32 | ... ? ... : ... | non-empty |
 | Assert.cs:66:24:66:24 | access to local variable s | non-null | Assert.cs:65:20:65:32 | ... ? ... : ... | non-null |
 | Assert.cs:66:24:66:24 | access to local variable s | null | Assert.cs:65:20:65:32 | ... ? ... : ... | null |
 | Assert.cs:66:24:66:32 | ... == ... | false | Assert.cs:65:20:65:20 | access to parameter b | false |
@@ -120,12 +120,12 @@
 | Assert.cs:66:24:66:37 | ... \|\| ... | false | Assert.cs:66:37:66:37 | access to parameter b | false |
 | Assert.cs:67:27:67:27 | access to local variable s | non-null | Assert.cs:65:20:65:32 | ... ? ... : ... | non-null |
 | Assert.cs:67:27:67:27 | access to local variable s | null | Assert.cs:65:20:65:32 | ... ? ... : ... | null |
-| Assert.cs:72:16:72:32 | String s = ... | non-null | Assert.cs:72:16:72:16 | access to local variable s | non-null |
-| Assert.cs:72:16:72:32 | String s = ... | null | Assert.cs:72:16:72:16 | access to local variable s | null |
 | Assert.cs:72:20:72:32 | ... ? ... : ... | non-null | Assert.cs:72:20:72:20 | access to parameter b | false |
 | Assert.cs:72:20:72:32 | ... ? ... : ... | non-null | Assert.cs:72:31:72:32 | "" | non-null |
 | Assert.cs:72:20:72:32 | ... ? ... : ... | null | Assert.cs:72:20:72:20 | access to parameter b | true |
 | Assert.cs:72:20:72:32 | ... ? ... : ... | null | Assert.cs:72:24:72:27 | null | null |
+| Assert.cs:73:23:73:23 | access to local variable s | empty | Assert.cs:72:20:72:32 | ... ? ... : ... | empty |
+| Assert.cs:73:23:73:23 | access to local variable s | non-empty | Assert.cs:72:20:72:32 | ... ? ... : ... | non-empty |
 | Assert.cs:73:23:73:23 | access to local variable s | non-null | Assert.cs:72:20:72:32 | ... ? ... : ... | non-null |
 | Assert.cs:73:23:73:23 | access to local variable s | null | Assert.cs:72:20:72:32 | ... ? ... : ... | null |
 | Assert.cs:73:23:73:31 | ... == ... | false | Assert.cs:72:20:72:20 | access to parameter b | false |
@@ -136,12 +136,12 @@
 | Assert.cs:73:23:73:36 | ... && ... | true | Assert.cs:73:36:73:36 | access to parameter b | true |
 | Assert.cs:74:27:74:27 | access to local variable s | non-null | Assert.cs:72:20:72:32 | ... ? ... : ... | non-null |
 | Assert.cs:74:27:74:27 | access to local variable s | null | Assert.cs:72:20:72:32 | ... ? ... : ... | null |
-| Assert.cs:79:16:79:32 | String s = ... | non-null | Assert.cs:79:16:79:16 | access to local variable s | non-null |
-| Assert.cs:79:16:79:32 | String s = ... | null | Assert.cs:79:16:79:16 | access to local variable s | null |
 | Assert.cs:79:20:79:32 | ... ? ... : ... | non-null | Assert.cs:79:20:79:20 | access to parameter b | false |
 | Assert.cs:79:20:79:32 | ... ? ... : ... | non-null | Assert.cs:79:31:79:32 | "" | non-null |
 | Assert.cs:79:20:79:32 | ... ? ... : ... | null | Assert.cs:79:20:79:20 | access to parameter b | true |
 | Assert.cs:79:20:79:32 | ... ? ... : ... | null | Assert.cs:79:24:79:27 | null | null |
+| Assert.cs:80:24:80:24 | access to local variable s | empty | Assert.cs:79:20:79:32 | ... ? ... : ... | empty |
+| Assert.cs:80:24:80:24 | access to local variable s | non-empty | Assert.cs:79:20:79:32 | ... ? ... : ... | non-empty |
 | Assert.cs:80:24:80:24 | access to local variable s | non-null | Assert.cs:79:20:79:32 | ... ? ... : ... | non-null |
 | Assert.cs:80:24:80:24 | access to local variable s | null | Assert.cs:79:20:79:32 | ... ? ... : ... | null |
 | Assert.cs:80:24:80:32 | ... != ... | false | Assert.cs:79:20:79:20 | access to parameter b | true |
@@ -152,6 +152,62 @@
 | Assert.cs:80:24:80:37 | ... \|\| ... | false | Assert.cs:80:37:80:37 | access to parameter b | false |
 | Assert.cs:81:27:81:27 | access to local variable s | non-null | Assert.cs:79:20:79:32 | ... ? ... : ... | non-null |
 | Assert.cs:81:27:81:27 | access to local variable s | null | Assert.cs:79:20:79:32 | ... ? ... : ... | null |
+| Collections.cs:12:17:12:32 | ... == ... | false | Collections.cs:12:17:12:20 | access to parameter args | non-empty |
+| Collections.cs:12:17:12:32 | ... == ... | true | Collections.cs:12:17:12:20 | access to parameter args | empty |
+| Collections.cs:13:13:13:28 | ... == ... | true | Collections.cs:13:13:13:16 | access to parameter args | non-empty |
+| Collections.cs:14:13:14:28 | ... != ... | false | Collections.cs:14:13:14:16 | access to parameter args | empty |
+| Collections.cs:14:13:14:28 | ... != ... | true | Collections.cs:14:13:14:16 | access to parameter args | non-empty |
+| Collections.cs:15:13:15:28 | ... != ... | false | Collections.cs:15:13:15:16 | access to parameter args | non-empty |
+| Collections.cs:16:13:16:27 | ... > ... | true | Collections.cs:16:13:16:16 | access to parameter args | non-empty |
+| Collections.cs:18:13:18:28 | ... >= ... | true | Collections.cs:18:13:18:16 | access to parameter args | non-empty |
+| Collections.cs:23:17:23:31 | ... == ... | false | Collections.cs:23:17:23:20 | access to parameter args | non-empty |
+| Collections.cs:23:17:23:31 | ... == ... | true | Collections.cs:23:17:23:20 | access to parameter args | empty |
+| Collections.cs:24:13:24:27 | ... == ... | true | Collections.cs:24:13:24:16 | access to parameter args | non-empty |
+| Collections.cs:25:13:25:27 | ... != ... | false | Collections.cs:25:13:25:16 | access to parameter args | empty |
+| Collections.cs:25:13:25:27 | ... != ... | true | Collections.cs:25:13:25:16 | access to parameter args | non-empty |
+| Collections.cs:26:13:26:27 | ... != ... | false | Collections.cs:26:13:26:16 | access to parameter args | non-empty |
+| Collections.cs:27:13:27:26 | ... > ... | true | Collections.cs:27:13:27:16 | access to parameter args | non-empty |
+| Collections.cs:29:13:29:27 | ... >= ... | true | Collections.cs:29:13:29:16 | access to parameter args | non-empty |
+| Collections.cs:34:17:34:33 | ... == ... | false | Collections.cs:34:17:34:20 | access to parameter args | non-empty |
+| Collections.cs:34:17:34:33 | ... == ... | true | Collections.cs:34:17:34:20 | access to parameter args | empty |
+| Collections.cs:35:13:35:29 | ... == ... | true | Collections.cs:35:13:35:16 | access to parameter args | non-empty |
+| Collections.cs:36:13:36:29 | ... != ... | false | Collections.cs:36:13:36:16 | access to parameter args | empty |
+| Collections.cs:36:13:36:29 | ... != ... | true | Collections.cs:36:13:36:16 | access to parameter args | non-empty |
+| Collections.cs:37:13:37:29 | ... != ... | false | Collections.cs:37:13:37:16 | access to parameter args | non-empty |
+| Collections.cs:38:13:38:28 | ... > ... | true | Collections.cs:38:13:38:16 | access to parameter args | non-empty |
+| Collections.cs:40:13:40:29 | ... >= ... | true | Collections.cs:40:13:40:16 | access to parameter args | non-empty |
+| Collections.cs:45:17:45:26 | call to method Any | false | Collections.cs:45:17:45:20 | access to parameter args | empty |
+| Collections.cs:45:17:45:26 | call to method Any | true | Collections.cs:45:17:45:20 | access to parameter args | non-empty |
+| Collections.cs:50:13:50:27 | ... == ... | false | Collections.cs:50:13:50:16 | access to parameter args | non-empty |
+| Collections.cs:50:13:50:27 | ... == ... | true | Collections.cs:50:13:50:16 | access to parameter args | empty |
+| Collections.cs:56:13:56:13 | access to local variable x | empty | Collections.cs:55:13:55:41 | array creation of type String[] | empty |
+| Collections.cs:56:13:56:13 | access to local variable x | non-empty | Collections.cs:55:13:55:41 | array creation of type String[] | non-empty |
+| Collections.cs:56:13:56:13 | access to local variable x | non-null | Collections.cs:55:13:55:41 | array creation of type String[] | non-null |
+| Collections.cs:56:13:56:13 | access to local variable x | null | Collections.cs:55:13:55:41 | array creation of type String[] | null |
+| Collections.cs:58:13:58:13 | access to local variable x | empty | Collections.cs:57:13:57:25 | array creation of type String[] | empty |
+| Collections.cs:58:13:58:13 | access to local variable x | non-empty | Collections.cs:57:13:57:25 | array creation of type String[] | non-empty |
+| Collections.cs:58:13:58:13 | access to local variable x | non-null | Collections.cs:57:13:57:25 | array creation of type String[] | non-null |
+| Collections.cs:58:13:58:13 | access to local variable x | null | Collections.cs:57:13:57:25 | array creation of type String[] | null |
+| Collections.cs:64:9:64:9 | access to local variable x | empty | Collections.cs:63:17:63:54 | call to method ToList | empty |
+| Collections.cs:64:9:64:9 | access to local variable x | non-empty | Collections.cs:63:17:63:54 | call to method ToList | non-empty |
+| Collections.cs:64:9:64:9 | access to local variable x | non-null | Collections.cs:63:17:63:54 | call to method ToList | non-null |
+| Collections.cs:64:9:64:9 | access to local variable x | null | Collections.cs:63:17:63:54 | call to method ToList | null |
+| Collections.cs:65:13:65:13 | access to local variable x | non-null | Collections.cs:63:17:63:54 | call to method ToList | non-null |
+| Collections.cs:65:13:65:13 | access to local variable x | null | Collections.cs:63:17:63:54 | call to method ToList | null |
+| Collections.cs:65:13:65:24 | ... == ... | false | Collections.cs:65:13:65:13 | access to local variable x | non-empty |
+| Collections.cs:65:13:65:24 | ... == ... | true | Collections.cs:65:13:65:13 | access to local variable x | empty |
+| Collections.cs:67:13:67:13 | access to local variable x | non-null | Collections.cs:63:17:63:54 | call to method ToList | non-null |
+| Collections.cs:67:13:67:13 | access to local variable x | null | Collections.cs:63:17:63:54 | call to method ToList | null |
+| Collections.cs:68:13:68:13 | access to local variable x | non-null | Collections.cs:63:17:63:54 | call to method ToList | non-null |
+| Collections.cs:68:13:68:13 | access to local variable x | null | Collections.cs:63:17:63:54 | call to method ToList | null |
+| Collections.cs:74:35:74:41 | ... == ... | true | Collections.cs:74:35:74:35 | access to parameter s | non-null |
+| Collections.cs:75:17:75:33 | call to method Any | true | Collections.cs:75:17:75:20 | access to parameter args | non-empty |
+| Collections.cs:76:13:76:36 | ... == ... | false | Collections.cs:76:13:76:16 | access to parameter args | non-empty |
+| Collections.cs:77:13:77:36 | ... == ... | true | Collections.cs:77:13:77:16 | access to parameter args | non-empty |
+| Collections.cs:78:13:78:36 | ... != ... | true | Collections.cs:78:13:78:16 | access to parameter args | non-empty |
+| Collections.cs:79:13:79:36 | ... != ... | false | Collections.cs:79:13:79:16 | access to parameter args | non-empty |
+| Collections.cs:80:13:80:35 | ... > ... | true | Collections.cs:80:13:80:16 | access to parameter args | non-empty |
+| Collections.cs:82:13:82:36 | ... >= ... | true | Collections.cs:82:13:82:16 | access to parameter args | non-empty |
 | Guards.cs:10:13:10:25 | !... | false | Guards.cs:10:14:10:25 | !... | true |
 | Guards.cs:10:13:10:25 | !... | true | Guards.cs:10:14:10:25 | !... | false |
 | Guards.cs:10:14:10:25 | !... | false | Guards.cs:10:16:10:24 | ... == ... | true |
@@ -213,10 +269,8 @@
 | Guards.cs:60:13:60:45 | ... == ... | true | Guards.cs:60:13:60:37 | access to field Field | null |
 | Guards.cs:68:16:68:24 | ... != ... | false | Guards.cs:68:16:68:16 | access to parameter s | null |
 | Guards.cs:68:16:68:24 | ... != ... | true | Guards.cs:68:16:68:16 | access to parameter s | non-null |
-| Guards.cs:71:13:71:20 | ... = ... | non-null | Guards.cs:71:13:71:13 | access to parameter s | non-null |
-| Guards.cs:71:13:71:20 | ... = ... | non-null | Guards.cs:71:17:71:20 | null | non-null |
-| Guards.cs:71:13:71:20 | ... = ... | null | Guards.cs:71:13:71:13 | access to parameter s | null |
-| Guards.cs:71:13:71:20 | ... = ... | null | Guards.cs:71:17:71:20 | null | null |
+| Guards.cs:72:31:72:31 | access to parameter s | empty | Guards.cs:71:17:71:20 | null | empty |
+| Guards.cs:72:31:72:31 | access to parameter s | non-empty | Guards.cs:71:17:71:20 | null | non-empty |
 | Guards.cs:72:31:72:31 | access to parameter s | non-null | Guards.cs:71:17:71:20 | null | non-null |
 | Guards.cs:72:31:72:31 | access to parameter s | null | Guards.cs:71:17:71:20 | null | null |
 | Guards.cs:78:13:78:26 | ... == ... | true | Guards.cs:78:15:78:21 | access to property Length | non-null |
@@ -247,36 +301,18 @@
 | Guards.cs:96:13:96:19 | ... == ... | true | Guards.cs:96:13:96:13 | access to parameter s | non-null |
 | Guards.cs:104:13:104:45 | ... == ... | false | Guards.cs:104:13:104:37 | access to field Field | non-null |
 | Guards.cs:104:13:104:45 | ... == ... | true | Guards.cs:104:13:104:37 | access to field Field | null |
-| Guards.cs:106:9:106:25 | ... = ... | non-null | Guards.cs:106:9:106:18 | access to property Property | non-null |
-| Guards.cs:106:9:106:25 | ... = ... | non-null | Guards.cs:106:22:106:25 | null | non-null |
-| Guards.cs:106:9:106:25 | ... = ... | null | Guards.cs:106:9:106:18 | access to property Property | null |
-| Guards.cs:106:9:106:25 | ... = ... | null | Guards.cs:106:22:106:25 | null | null |
 | Guards.cs:107:27:107:36 | access to property Property | non-null | Guards.cs:106:22:106:25 | null | non-null |
 | Guards.cs:107:27:107:36 | access to property Property | null | Guards.cs:106:22:106:25 | null | null |
 | Guards.cs:108:27:108:36 | access to property Property | non-null | Guards.cs:106:22:106:25 | null | non-null |
 | Guards.cs:108:27:108:36 | access to property Property | null | Guards.cs:106:22:106:25 | null | null |
-| Guards.cs:113:13:114:38 | String dummy = ... | non-null | Guards.cs:113:13:113:17 | access to local variable dummy | non-null |
-| Guards.cs:113:13:114:38 | String dummy = ... | null | Guards.cs:113:13:113:17 | access to local variable dummy | null |
 | Guards.cs:113:21:114:38 | ... ?? ... | null | Guards.cs:113:21:113:45 | access to field Field | null |
 | Guards.cs:113:21:114:38 | ... ?? ... | null | Guards.cs:114:14:114:38 | access to field Field | null |
-| Guards.cs:115:9:115:55 | ... = ... | non-null | Guards.cs:115:9:115:13 | access to local variable dummy | non-null |
-| Guards.cs:115:9:115:55 | ... = ... | non-null | Guards.cs:115:17:115:55 | ... ?? ... | non-null |
-| Guards.cs:115:9:115:55 | ... = ... | null | Guards.cs:115:9:115:13 | access to local variable dummy | null |
-| Guards.cs:115:9:115:55 | ... = ... | null | Guards.cs:115:17:115:55 | ... ?? ... | null |
 | Guards.cs:115:17:115:55 | ... ?? ... | null | Guards.cs:115:17:115:41 | access to field Field | null |
 | Guards.cs:115:17:115:55 | ... ?? ... | null | Guards.cs:115:46:115:55 | throw ... | null |
-| Guards.cs:117:9:117:25 | ... = ... | non-null | Guards.cs:117:9:117:18 | access to property Property | non-null |
-| Guards.cs:117:9:117:25 | ... = ... | non-null | Guards.cs:117:22:117:25 | null | non-null |
-| Guards.cs:117:9:117:25 | ... = ... | null | Guards.cs:117:9:117:18 | access to property Property | null |
-| Guards.cs:117:9:117:25 | ... = ... | null | Guards.cs:117:22:117:25 | null | null |
 | Guards.cs:118:27:118:36 | access to property Property | non-null | Guards.cs:117:22:117:25 | null | non-null |
 | Guards.cs:118:27:118:36 | access to property Property | null | Guards.cs:117:22:117:25 | null | null |
 | Guards.cs:119:27:119:36 | access to property Property | non-null | Guards.cs:117:22:117:25 | null | non-null |
 | Guards.cs:119:27:119:36 | access to property Property | null | Guards.cs:117:22:117:25 | null | null |
-| Guards.cs:124:13:124:30 | Boolean b1 = ... | false | Guards.cs:124:13:124:14 | access to local variable b1 | false |
-| Guards.cs:124:13:124:30 | Boolean b1 = ... | true | Guards.cs:124:13:124:14 | access to local variable b1 | true |
-| Guards.cs:125:13:125:31 | Nullable<Boolean> b2 = ... | non-null | Guards.cs:125:13:125:14 | access to local variable b2 | non-null |
-| Guards.cs:125:13:125:31 | Nullable<Boolean> b2 = ... | null | Guards.cs:125:13:125:14 | access to local variable b2 | null |
 | Guards.cs:125:21:125:31 | call to method Equals | non-null | Guards.cs:125:18:125:19 | access to parameter s1 | non-null |
 | Guards.cs:125:21:125:31 | call to method Equals | null | Guards.cs:125:18:125:19 | access to parameter s1 | null |
 | Guards.cs:130:13:130:21 | ... is ... | false | Guards.cs:130:13:130:13 | access to parameter s | non-null |
@@ -284,6 +320,8 @@
 | Guards.cs:137:13:137:25 | ... is ... | false | Guards.cs:137:13:137:13 | access to parameter s | null |
 | Guards.cs:137:13:137:25 | ... is ... | true | Guards.cs:137:13:137:13 | access to parameter s | non-null |
 | Guards.cs:144:13:144:25 | ... is ... | true | Guards.cs:144:13:144:13 | access to parameter o | non-null |
+| Guards.cs:145:20:145:20 | access to local variable s | empty | Guards.cs:144:13:144:13 | access to parameter o | empty |
+| Guards.cs:145:20:145:20 | access to local variable s | non-empty | Guards.cs:144:13:144:13 | access to parameter o | non-empty |
 | Guards.cs:145:20:145:20 | access to local variable s | non-null | Guards.cs:144:13:144:13 | access to parameter o | non-null |
 | Guards.cs:145:20:145:20 | access to local variable s | null | Guards.cs:144:13:144:13 | access to parameter o | null |
 | Guards.cs:151:17:151:17 | access to parameter o | match "" | Guards.cs:151:17:151:17 | access to parameter o | non-null |
@@ -330,16 +368,8 @@
 | Guards.cs:197:13:197:29 | !... | true | Guards.cs:197:14:197:29 | call to method NullTestWrong | false |
 | Guards.cs:203:13:203:21 | ... != ... | false | Guards.cs:203:13:203:13 | access to parameter o | null |
 | Guards.cs:203:13:203:21 | ... != ... | true | Guards.cs:203:13:203:13 | access to parameter o | non-null |
-| Guards.cs:215:13:215:21 | Boolean b2 = ... | false | Guards.cs:215:13:215:14 | access to local variable b2 | false |
-| Guards.cs:215:13:215:21 | Boolean b2 = ... | true | Guards.cs:215:13:215:14 | access to local variable b2 | true |
-| Guards.cs:217:13:217:22 | ... = ... | false | Guards.cs:217:13:217:14 | access to local variable b2 | false |
-| Guards.cs:217:13:217:22 | ... = ... | true | Guards.cs:217:13:217:14 | access to local variable b2 | true |
 | Guards.cs:218:17:218:18 | access to local variable b2 | match true | Guards.cs:216:13:216:14 | access to parameter b1 | false |
 | Guards.cs:218:17:218:18 | access to local variable b2 | match true | Guards.cs:218:17:218:18 | access to local variable b2 | true |
-| Guards.cs:228:13:228:22 | Boolean b2 = ... | false | Guards.cs:228:13:228:14 | access to local variable b2 | false |
-| Guards.cs:228:13:228:22 | Boolean b2 = ... | true | Guards.cs:228:13:228:14 | access to local variable b2 | true |
-| Guards.cs:230:13:230:21 | ... = ... | false | Guards.cs:230:13:230:14 | access to local variable b2 | false |
-| Guards.cs:230:13:230:21 | ... = ... | true | Guards.cs:230:13:230:14 | access to local variable b2 | true |
 | Guards.cs:231:17:231:18 | access to local variable b2 | match true | Guards.cs:229:13:229:14 | access to parameter b1 | true |
 | Guards.cs:231:17:231:18 | access to local variable b2 | match true | Guards.cs:231:17:231:18 | access to local variable b2 | true |
 | Guards.cs:231:17:231:18 | access to local variable b2 | non-match true | Guards.cs:229:13:229:14 | access to parameter b1 | false |
@@ -360,16 +390,8 @@
 | Guards.cs:276:16:276:16 | access to parameter o | non-match null | Guards.cs:276:16:276:16 | access to parameter o | non-null |
 | Guards.cs:281:17:281:17 | access to local variable a | non-null | Guards.cs:276:16:276:16 | access to parameter o | non-null |
 | Guards.cs:281:17:281:17 | access to local variable a | null | Guards.cs:276:16:276:16 | access to parameter o | null |
-| Guards.cs:293:13:293:21 | Boolean b2 = ... | false | Guards.cs:293:13:293:14 | access to local variable b2 | false |
-| Guards.cs:293:13:293:21 | Boolean b2 = ... | true | Guards.cs:293:13:293:14 | access to local variable b2 | true |
-| Guards.cs:295:13:295:22 | ... = ... | false | Guards.cs:295:13:295:14 | access to local variable b2 | false |
-| Guards.cs:295:13:295:22 | ... = ... | true | Guards.cs:295:13:295:14 | access to local variable b2 | true |
 | Guards.cs:296:16:296:17 | access to local variable b2 | match true | Guards.cs:294:13:294:14 | access to parameter b1 | false |
 | Guards.cs:296:16:296:17 | access to local variable b2 | match true | Guards.cs:296:16:296:17 | access to local variable b2 | true |
-| Guards.cs:305:13:305:22 | Boolean b2 = ... | false | Guards.cs:305:13:305:14 | access to local variable b2 | false |
-| Guards.cs:305:13:305:22 | Boolean b2 = ... | true | Guards.cs:305:13:305:14 | access to local variable b2 | true |
-| Guards.cs:307:13:307:21 | ... = ... | false | Guards.cs:307:13:307:14 | access to local variable b2 | false |
-| Guards.cs:307:13:307:21 | ... = ... | true | Guards.cs:307:13:307:14 | access to local variable b2 | true |
 | Guards.cs:308:16:308:17 | access to local variable b2 | match true | Guards.cs:306:13:306:14 | access to parameter b1 | true |
 | Guards.cs:308:16:308:17 | access to local variable b2 | match true | Guards.cs:308:16:308:17 | access to local variable b2 | true |
 | Guards.cs:308:16:308:17 | access to local variable b2 | non-match true | Guards.cs:306:13:306:14 | access to parameter b1 | false |
@@ -401,13 +423,7 @@
 | Splitting.cs:105:22:105:30 | ... != ... | true | Splitting.cs:105:22:105:22 | access to parameter o | non-null |
 | Splitting.cs:116:22:116:30 | ... != ... | false | Splitting.cs:116:22:116:22 | access to parameter o | null |
 | Splitting.cs:116:22:116:30 | ... != ... | true | Splitting.cs:116:22:116:22 | access to parameter o | non-null |
-| Splitting.cs:125:16:125:23 | Object o = ... | non-null | Splitting.cs:125:16:125:16 | access to local variable o | non-null |
-| Splitting.cs:125:16:125:23 | Object o = ... | null | Splitting.cs:125:16:125:16 | access to local variable o | null |
 | Splitting.cs:128:17:128:25 | ... != ... | false | Splitting.cs:128:17:128:17 | access to local variable o | null |
 | Splitting.cs:128:17:128:25 | ... != ... | true | Splitting.cs:128:17:128:17 | access to local variable o | non-null |
-| Splitting.cs:132:17:132:29 | ... = ... | non-null | Splitting.cs:132:17:132:17 | access to local variable o | non-null |
-| Splitting.cs:132:17:132:29 | ... = ... | non-null | Splitting.cs:132:21:132:29 | call to method M11 | non-null |
-| Splitting.cs:132:17:132:29 | ... = ... | null | Splitting.cs:132:17:132:17 | access to local variable o | null |
-| Splitting.cs:132:17:132:29 | ... = ... | null | Splitting.cs:132:21:132:29 | call to method M11 | null |
 | Splitting.cs:133:17:133:17 | access to local variable o | non-null | Splitting.cs:132:21:132:29 | call to method M11 | non-null |
 | Splitting.cs:133:17:133:17 | access to local variable o | null | Splitting.cs:132:21:132:29 | call to method M11 | null |
--- a/csharp/ql/test/query-tests/Nullness/E.cs
+++ b/csharp/ql/test/query-tests/Nullness/E.cs
@@ -32,7 +32,7 @@ public class E
        string last = null;
        foreach (var s in new string[] { "aa", "bb" })
            last = s;
-        last.ToString(); // GOOD (false positive)
+        last.ToString(); // GOOD

        last = null;
        if (ss.Any())
@@ -40,7 +40,7 @@ public class E
            foreach (var s in ss)
                last = s;

-            last.ToString(); // GOOD (false positive)
+            last.ToString(); // GOOD
        }
    }

--- a/csharp/ql/test/query-tests/Nullness/Implications.expected
+++ b/csharp/ql/test/query-tests/Nullness/Implications.expected
--- a/csharp/ql/test/query-tests/Nullness/NullMaybe.expected
+++ b/csharp/ql/test/query-tests/Nullness/NullMaybe.expected
@@ -271,13 +271,6 @@ nodes
 | E.cs:24:33:24:36 | null |
 | E.cs:26:9:27:26 | if (...) ... |
 | E.cs:27:13:27:14 | access to local variable s1 |
-| E.cs:32:16:32:26 | SSA def(last) |
-| E.cs:33:9:34:21 | foreach (... ... in ...) ... |
-| E.cs:35:9:35:12 | access to local variable last |
-| E.cs:37:9:37:19 | SSA def(last) |
-| E.cs:39:9:44:9 | {...} |
-| E.cs:40:13:41:25 | foreach (... ... in ...) ... |
-| E.cs:43:13:43:16 | access to local variable last |
 | E.cs:51:22:51:33 | SSA def(slice) |
 | E.cs:53:16:53:19 | access to local variable iter |
 | E.cs:54:9:63:9 | {...} |
@@ -621,11 +614,6 @@ edges
 | E.cs:24:13:24:41 | ... = ... | E.cs:26:9:27:26 | if (...) ... |
 | E.cs:24:33:24:36 | null | E.cs:24:13:24:41 | ... = ... |
 | E.cs:26:9:27:26 | if (...) ... | E.cs:27:13:27:14 | access to local variable s1 |
-| E.cs:32:16:32:26 | SSA def(last) | E.cs:33:9:34:21 | foreach (... ... in ...) ... |
-| E.cs:33:9:34:21 | foreach (... ... in ...) ... | E.cs:35:9:35:12 | access to local variable last |
-| E.cs:37:9:37:19 | SSA def(last) | E.cs:39:9:44:9 | {...} |
-| E.cs:39:9:44:9 | {...} | E.cs:40:13:41:25 | foreach (... ... in ...) ... |
-| E.cs:40:13:41:25 | foreach (... ... in ...) ... | E.cs:43:13:43:16 | access to local variable last |
 | E.cs:51:22:51:33 | SSA def(slice) | E.cs:53:16:53:19 | access to local variable iter |
 | E.cs:53:16:53:19 | access to local variable iter | E.cs:54:9:63:9 | {...} |
 | E.cs:54:9:63:9 | {...} | E.cs:61:13:61:17 | access to local variable slice |
@@ -769,8 +757,6 @@ edges
 | E.cs:12:38:12:39 | access to local variable a2 | E.cs:9:18:9:26 | SSA def(a2) | E.cs:12:38:12:39 | access to local variable a2 | Variable $@ may be null here because of $@ assignment. | E.cs:9:18:9:19 | a2 | a2 | E.cs:9:18:9:26 | Int64[][] a2 = ... | this |
 | E.cs:14:13:14:14 | access to local variable a3 | E.cs:11:16:11:24 | SSA def(a3) | E.cs:14:13:14:14 | access to local variable a3 | Variable $@ may be null here because of $@ assignment. | E.cs:11:16:11:17 | a3 | a3 | E.cs:11:16:11:24 | Int64[] a3 = ... | this |
 | E.cs:27:13:27:14 | access to local variable s1 | E.cs:23:13:23:30 | SSA def(s1) | E.cs:27:13:27:14 | access to local variable s1 | Variable $@ may be null here because of $@ assignment. | E.cs:19:13:19:14 | s1 | s1 | E.cs:23:13:23:30 | ... = ... | this |
-| E.cs:35:9:35:12 | access to local variable last | E.cs:32:16:32:26 | SSA def(last) | E.cs:35:9:35:12 | access to local variable last | Variable $@ may be null here because of $@ assignment. | E.cs:32:16:32:19 | last | last | E.cs:32:16:32:26 | String last = ... | this |
-| E.cs:43:13:43:16 | access to local variable last | E.cs:37:9:37:19 | SSA def(last) | E.cs:43:13:43:16 | access to local variable last | Variable $@ may be null here because of $@ assignment. | E.cs:32:16:32:19 | last | last | E.cs:37:9:37:19 | ... = ... | this |
 | E.cs:61:13:61:17 | access to local variable slice | E.cs:51:22:51:33 | SSA def(slice) | E.cs:61:13:61:17 | access to local variable slice | Variable $@ may be null here because of $@ assignment. | E.cs:51:22:51:26 | slice | slice | E.cs:51:22:51:33 | List<String> slice = ... | this |
 | E.cs:73:13:73:15 | access to parameter arr | E.cs:66:40:66:42 | SSA param(arr) | E.cs:73:13:73:15 | access to parameter arr | Variable $@ may be null here as suggested by $@ null check. | E.cs:66:40:66:42 | arr | arr | E.cs:70:22:70:32 | ... == ... | this |
 | E.cs:112:13:112:16 | access to local variable arr2 | E.cs:107:15:107:25 | SSA def(arr2) | E.cs:112:13:112:16 | access to local variable arr2 | Variable $@ may be null here because of $@ assignment. | E.cs:107:15:107:18 | arr2 | arr2 | E.cs:107:15:107:25 | Int32[] arr2 = ... | this |