hohn/codeql
1
0
Fork 0
mirror of https://github.com/github/codeql.git synced 2025-12-17 01:03:14 +01:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #11198 from hvitved/ssa/expose-phi-reads

Browse Source 
SSA: Expose phi-read nodes
This commit is contained in:
Tom Hvitved
2022-11-16 15:11:58 +01:00
committed by GitHub
parent 6c0bef7e6e 67e8ec1a5f
commit 67b6a82cf1
21 changed files with 1252 additions and 375 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
csharp/ql/consistency-queries/SsaConsistency.ql
View File

@@ -1,5 +1,6 @@
import csharp
import semmle.code.csharp.dataflow.internal.SsaImpl::Consistency
import semmle.code.csharp.dataflow.internal.SsaImpl as Impl
import Impl::Consistency
import Ssa
class MyRelevantDefinition extends RelevantDefinition, Ssa::Definition {
@@ -10,6 +11,14 @@ class MyRelevantDefinition extends RelevantDefinition, Ssa::Definition {
}
}
class MyRelevantDefinitionExt extends RelevantDefinitionExt, Impl::DefinitionExt {
override predicate hasLocationInfo(
string filepath, int startline, int startcolumn, int endline, int endcolumn
) {
this.getLocation().hasLocationInfo(filepath, startline, startcolumn, endline, endcolumn)
}
}
query predicate localDeclWithSsaDef(LocalVariableDeclExpr d) {
// Local variables in C# must be initialized before every use, so uninitialized
// local variables should not have an SSA definition, as that would imply that

38
csharp/ql/lib/semmle/code/csharp/dataflow/SSA.qll
View File

@@ -138,25 +138,6 @@ module Ssa {
}
}
private string getSplitString(Definition def) {
exists(ControlFlow::BasicBlock bb, int i, ControlFlow::Node cfn |
def.definesAt(_, bb, i) and
result = cfn.(ControlFlow::Nodes::ElementNode).getSplitsString()
|
cfn = bb.getNode(i)
or
not exists(bb.getNode(i)) and
cfn = bb.getFirstNode()
)
}
private string getToStringPrefix(Definition def) {
result = "[" + getSplitString(def) + "] "
or
not exists(getSplitString(def)) and
result = ""
}
/**
* A static single assignment (SSA) definition. Either an explicit variable
* definition (`ExplicitDefinition`), an implicit variable definition
@@ -521,8 +502,8 @@ module Ssa {
override string toString() {
if this.getADefinition() instanceof AssignableDefinitions::ImplicitParameterDefinition
then result = getToStringPrefix(this) + "SSA param(" + this.getSourceVariable() + ")"
else result = getToStringPrefix(this) + "SSA def(" + this.getSourceVariable() + ")"
then result = SsaImpl::getToStringPrefix(this) + "SSA param(" + this.getSourceVariable() + ")"
else result = SsaImpl::getToStringPrefix(this) + "SSA def(" + this.getSourceVariable() + ")"
}
override Location getLocation() { result = ad.getLocation() }
@@ -570,8 +551,12 @@ module Ssa {
override string toString() {
if this.getSourceVariable().getAssignable() instanceof LocalScopeVariable
then result = getToStringPrefix(this) + "SSA capture def(" + this.getSourceVariable() + ")"
else result = getToStringPrefix(this) + "SSA entry def(" + this.getSourceVariable() + ")"
then
result =
SsaImpl::getToStringPrefix(this) + "SSA capture def(" + this.getSourceVariable() + ")"
else
result =
SsaImpl::getToStringPrefix(this) + "SSA entry def(" + this.getSourceVariable() + ")"
}
override Location getLocation() { result = this.getCallable().getLocation() }
@@ -612,7 +597,7 @@ module Ssa {
}
override string toString() {
result = getToStringPrefix(this) + "SSA call def(" + this.getSourceVariable() + ")"
result = SsaImpl::getToStringPrefix(this) + "SSA call def(" + this.getSourceVariable() + ")"
}
override Location getLocation() { result = this.getCall().getLocation() }
@@ -640,7 +625,8 @@ module Ssa {
final Definition getQualifierDefinition() { result = q }
override string toString() {
result = getToStringPrefix(this) + "SSA qualifier def(" + this.getSourceVariable() + ")"
result =
SsaImpl::getToStringPrefix(this) + "SSA qualifier def(" + this.getSourceVariable() + ")"
}
override Location getLocation() { result = this.getQualifierDefinition().getLocation() }
@@ -682,7 +668,7 @@ module Ssa {
}
override string toString() {
result = getToStringPrefix(this) + "SSA phi(" + this.getSourceVariable() + ")"
result = SsaImpl::getToStringPrefix(this) + "SSA phi(" + this.getSourceVariable() + ")"
}
/*

91
csharp/ql/lib/semmle/code/csharp/dataflow/internal/SsaImpl.qll
View File

@@ -49,7 +49,23 @@ private module SsaInput implements SsaImplCommon::InputSig {
}
}
import SsaImplCommon::Make<SsaInput>
private import SsaImplCommon::Make<SsaInput> as Impl
class Definition = Impl::Definition;
class WriteDefinition = Impl::WriteDefinition;
class UncertainWriteDefinition = Impl::UncertainWriteDefinition;
class PhiNode = Impl::PhiNode;
module Consistency = Impl::Consistency;
module ExposedForTestingOnly {
predicate ssaDefReachesReadExt = Impl::ssaDefReachesReadExt/4;
predicate phiHasInputFromBlockExt = Impl::phiHasInputFromBlockExt/3;
}
/**
* Holds if the `i`th node of basic block `bb` reads source variable `v`.
@@ -1072,7 +1088,7 @@ private predicate adjacentDefRead(
Definition def, SsaInput::BasicBlock bb1, int i1, SsaInput::BasicBlock bb2, int i2,
SsaInput::SourceVariable v
) {
adjacentDefRead(def, bb1, i1, bb2, i2) and
Impl::adjacentDefRead(def, bb1, i1, bb2, i2) and
v = def.getSourceVariable()
}
@@ -1088,7 +1104,7 @@ private predicate adjacentDefReachesRead(
exists(SsaInput::BasicBlock bb3, int i3 |
adjacentDefReachesRead(def, bb1, i1, bb3, i3) and
SsaInput::variableRead(bb3, i3, _, false) and
adjacentDefRead(def, bb3, i3, bb2, i2)
Impl::adjacentDefRead(def, bb3, i3, bb2, i2)
)
}
@@ -1111,11 +1127,11 @@ private predicate adjacentDefReachesUncertainRead(
/** Same as `lastRefRedef`, but skips uncertain reads. */
pragma[nomagic]
private predicate lastRefSkipUncertainReads(Definition def, SsaInput::BasicBlock bb, int i) {
lastRef(def, bb, i) and
Impl::lastRef(def, bb, i) and
not SsaInput::variableRead(bb, i, def.getSourceVariable(), false)
or
exists(SsaInput::BasicBlock bb0, int i0 |
lastRef(def, bb0, i0) and
Impl::lastRef(def, bb0, i0) and
adjacentDefReachesUncertainRead(def, bb, i, bb0, i0)
)
}
@@ -1237,7 +1253,7 @@ private module Cached {
v = def.getSourceVariable() and
capturedReadIn(_, _, v, edef.getSourceVariable(), c, additionalCalls) and
def = def0.getAnUltimateDefinition() and
ssaDefReachesRead(_, def0, bb, i) and
Impl::ssaDefReachesRead(_, def0, bb, i) and
capturedReadIn(bb, i, v, _, _, _) and
c = bb.getNode(i)
)
@@ -1264,18 +1280,18 @@ private module Cached {
cached
predicate isLiveAtEndOfBlock(Definition def, ControlFlow::BasicBlock bb) {
ssaDefReachesEndOfBlock(bb, def, _)
Impl::ssaDefReachesEndOfBlock(bb, def, _)
}
cached
Definition phiHasInputFromBlock(PhiNode phi, ControlFlow::BasicBlock bb) {
phiHasInputFromBlock(phi, result, bb)
Definition phiHasInputFromBlock(Ssa::PhiNode phi, ControlFlow::BasicBlock bb) {
Impl::phiHasInputFromBlock(phi, result, bb)
}
cached
AssignableRead getAReadAtNode(Definition def, ControlFlow::Node cfn) {
exists(Ssa::SourceVariable v, ControlFlow::BasicBlock bb, int i |
ssaDefReachesRead(v, def, bb, i) and
Impl::ssaDefReachesRead(v, def, bb, i) and
variableReadActual(bb, i, v) and
cfn = bb.getNode(i) and
result.getAControlFlowNode() = cfn
@@ -1313,11 +1329,11 @@ private module Cached {
/** Same as `lastRefRedef`, but skips uncertain reads. */
cached
predicate lastRefBeforeRedef(Definition def, ControlFlow::BasicBlock bb, int i, Definition next) {
lastRefRedef(def, bb, i, next) and
Impl::lastRefRedef(def, bb, i, next) and
not SsaInput::variableRead(bb, i, def.getSourceVariable(), false)
or
exists(SsaInput::BasicBlock bb0, int i0 |
lastRefRedef(def, bb0, i0, next) and
Impl::lastRefRedef(def, bb0, i0, next) and
adjacentDefReachesUncertainRead(def, bb, i, bb0, i0)
)
}
@@ -1333,7 +1349,7 @@ private module Cached {
cached
Definition uncertainWriteDefinitionInput(UncertainWriteDefinition def) {
uncertainWriteDefinitionInput(def, result)
Impl::uncertainWriteDefinitionInput(def, result)
}
cached
@@ -1343,10 +1359,57 @@ private module Cached {
v = def.getSourceVariable() and
p = v.getAssignable() and
def = def0.getAnUltimateDefinition() and
ssaDefReachesRead(_, def0, bb, i) and
Impl::ssaDefReachesRead(_, def0, bb, i) and
outRefExitRead(bb, i, v)
)
}
}
import Cached
private string getSplitString(DefinitionExt def) {
exists(ControlFlow::BasicBlock bb, int i, ControlFlow::Node cfn |
def.definesAt(_, bb, i, _) and
result = cfn.(ControlFlow::Nodes::ElementNode).getSplitsString()
|
cfn = bb.getNode(i)
or
not exists(bb.getNode(i)) and
cfn = bb.getFirstNode()
)
}
string getToStringPrefix(DefinitionExt def) {
result = "[" + getSplitString(def) + "] "
or
not exists(getSplitString(def)) and
result = ""
}
/**
* An extended static single assignment (SSA) definition.
*
* This is either a normal SSA definition (`Definition`) or a
* phi-read node (`PhiReadNode`).
*
* Only intended for internal use.
*/
class DefinitionExt extends Impl::DefinitionExt {
override string toString() { result = this.(Ssa::Definition).toString() }
/** Gets the location of this definition. */
Location getLocation() { result = this.(Ssa::Definition).getLocation() }
}
/**
* A phi-read node.
*
* Only intended for internal use.
*/
class PhiReadNode extends DefinitionExt, Impl::PhiReadNode {
override string toString() {
result = getToStringPrefix(this) + "SSA phi read(" + this.getSourceVariable() + ")"
}
override Location getLocation() { result = this.getBasicBlock().getLocation() }
}

34
csharp/ql/test/library-tests/dataflow/ssa/SSAPhiRead.expected
View File

@@ -1,4 +1,30 @@
| DefUse.cs:63:9:63:14 | this.Field2 | DefUse.cs:80:30:80:31 | access to local variable x1 |
| Fields.cs:65:24:65:32 | this.LoopField | Fields.cs:63:16:63:28 | this access |
| Properties.cs:65:24:65:31 | this.LoopProp | Properties.cs:63:16:63:16 | access to parameter i |
| Test.cs:78:13:78:13 | x | Test.cs:90:9:97:9 | if (...) ... |
phiReadNode
| DefUse.cs:80:30:80:31 | SSA phi read(this.Field2) | DefUse.cs:63:9:63:14 | this.Field2 |
| Fields.cs:63:16:63:28 | SSA phi read(this.LoopField) | Fields.cs:65:24:65:32 | this.LoopField |
| Patterns.cs:20:9:38:9 | SSA phi read(o) | Patterns.cs:7:16:7:16 | o |
| Properties.cs:63:16:63:16 | SSA phi read(this.LoopProp) | Properties.cs:65:24:65:31 | this.LoopProp |
| Test.cs:25:16:25:16 | SSA phi read(x) | Test.cs:8:13:8:13 | x |
| Test.cs:90:9:97:9 | SSA phi read(x) | Test.cs:78:13:78:13 | x |
| Test.cs:99:9:99:15 | SSA phi read(x) | Test.cs:78:13:78:13 | x |
phiReadNodeRead
| DefUse.cs:80:30:80:31 | SSA phi read(this.Field2) | DefUse.cs:63:9:63:14 | this.Field2 | DefUse.cs:80:37:80:42 | access to field Field2 |
| Fields.cs:63:16:63:28 | SSA phi read(this.LoopField) | Fields.cs:65:24:65:32 | this.LoopField | Fields.cs:65:24:65:32 | access to field LoopField |
| Patterns.cs:20:9:38:9 | SSA phi read(o) | Patterns.cs:7:16:7:16 | o | Patterns.cs:20:17:20:17 | access to local variable o |
| Properties.cs:63:16:63:16 | SSA phi read(this.LoopProp) | Properties.cs:65:24:65:31 | this.LoopProp | Properties.cs:65:24:65:31 | access to property LoopProp |
| Test.cs:25:16:25:16 | SSA phi read(x) | Test.cs:8:13:8:13 | x | Test.cs:25:16:25:16 | access to local variable x |
| Test.cs:90:9:97:9 | SSA phi read(x) | Test.cs:78:13:78:13 | x | Test.cs:92:17:92:17 | access to local variable x |
| Test.cs:90:9:97:9 | SSA phi read(x) | Test.cs:78:13:78:13 | x | Test.cs:96:17:96:17 | access to local variable x |
| Test.cs:99:9:99:15 | SSA phi read(x) | Test.cs:78:13:78:13 | x | Test.cs:99:13:99:13 | access to local variable x |
| Test.cs:99:9:99:15 | SSA phi read(x) | Test.cs:78:13:78:13 | x | Test.cs:104:17:104:17 | access to local variable x |
phiReadInput
| DefUse.cs:80:30:80:31 | SSA phi read(this.Field2) | DefUse.cs:63:9:63:18 | SSA def(this.Field2) |
| DefUse.cs:80:30:80:31 | SSA phi read(this.Field2) | DefUse.cs:80:30:80:31 | SSA phi read(this.Field2) |
| Fields.cs:63:16:63:28 | SSA phi read(this.LoopField) | Fields.cs:61:17:61:17 | SSA entry def(this.LoopField) |
| Fields.cs:63:16:63:28 | SSA phi read(this.LoopField) | Fields.cs:63:16:63:28 | SSA phi read(this.LoopField) |
| Patterns.cs:20:9:38:9 | SSA phi read(o) | Patterns.cs:7:16:7:23 | SSA def(o) |
| Properties.cs:63:16:63:16 | SSA phi read(this.LoopProp) | Properties.cs:61:17:61:17 | SSA entry def(this.LoopProp) |
| Properties.cs:63:16:63:16 | SSA phi read(this.LoopProp) | Properties.cs:63:16:63:16 | SSA phi read(this.LoopProp) |
| Test.cs:25:16:25:16 | SSA phi read(x) | Test.cs:24:9:24:15 | SSA phi(x) |
| Test.cs:25:16:25:16 | SSA phi read(x) | Test.cs:25:16:25:16 | SSA phi read(x) |
| Test.cs:90:9:97:9 | SSA phi read(x) | Test.cs:78:13:78:17 | SSA def(x) |
| Test.cs:99:9:99:15 | SSA phi read(x) | Test.cs:90:9:97:9 | SSA phi read(x) |

17
csharp/ql/test/library-tests/dataflow/ssa/SSAPhiRead.ql
View File

@@ -1,6 +1,17 @@
import csharp
import semmle.code.csharp.dataflow.internal.SsaImpl
import ExposedForTestingOnly
from Ssa::SourceVariable v, ControlFlow::BasicBlock bb
where phiReadExposedForTesting(bb, v)
select v, bb
query predicate phiReadNode(PhiReadNode phi, Ssa::SourceVariable v) { phi.getSourceVariable() = v }
query predicate phiReadNodeRead(PhiReadNode phi, Ssa::SourceVariable v, ControlFlow::Node read) {
phi.getSourceVariable() = v and
exists(ControlFlow::BasicBlock bb, int i |
ssaDefReachesReadExt(v, phi, bb, i) and
read = bb.getNode(i)
)
}
query predicate phiReadInput(PhiReadNode phi, DefinitionExt inp) {
phiHasInputFromBlockExt(phi, inp, _)
}

2
csharp/ql/test/library-tests/dataflow/ssa/Test.cs
View File

@@ -95,7 +95,7 @@ class Test
{
use(x);
}
// no phi_use for `x`, because actual use exists in the block
// phi_use for `x`, even though there is an actual use in the block
use(x);

11
ruby/ql/consistency-queries/SsaConsistency.ql
View File

@@ -1,5 +1,6 @@
import codeql.ruby.dataflow.SSA
import codeql.ruby.dataflow.internal.SsaImpl::Consistency
import codeql.ruby.dataflow.internal.SsaImpl
import Consistency
class MyRelevantDefinition extends RelevantDefinition, Ssa::Definition {
override predicate hasLocationInfo(
@@ -8,3 +9,11 @@ class MyRelevantDefinition extends RelevantDefinition, Ssa::Definition {
this.getLocation().hasLocationInfo(filepath, startline, startcolumn, endline, endcolumn)
}
}
class MyRelevantDefinitionExt extends RelevantDefinitionExt, DefinitionExt {
override predicate hasLocationInfo(
string filepath, int startline, int startcolumn, int endline, int endcolumn
) {
this.getLocation().hasLocationInfo(filepath, startline, startcolumn, endline, endcolumn)
}
}

67
ruby/ql/lib/codeql/ruby/dataflow/internal/SsaImpl.qll
View File

@@ -2,6 +2,7 @@ private import codeql.ssa.Ssa as SsaImplCommon
private import codeql.ruby.AST
private import codeql.ruby.CFG as Cfg
private import codeql.ruby.controlflow.internal.ControlFlowGraphImplShared as ControlFlowGraphImplShared
private import codeql.ruby.dataflow.SSA
private import codeql.ruby.ast.Variable
private import Cfg::CfgNodes::ExprNodes
@@ -61,7 +62,23 @@ private module SsaInput implements SsaImplCommon::InputSig {
}
}
import SsaImplCommon::Make<SsaInput>
private import SsaImplCommon::Make<SsaInput> as Impl
class Definition = Impl::Definition;
class WriteDefinition = Impl::WriteDefinition;
class UncertainWriteDefinition = Impl::UncertainWriteDefinition;
class PhiNode = Impl::PhiNode;
module Consistency = Impl::Consistency;
module ExposedForTestingOnly {
predicate ssaDefReachesReadExt = Impl::ssaDefReachesReadExt/4;
predicate phiHasInputFromBlockExt = Impl::phiHasInputFromBlockExt/3;
}
/** Holds if `v` is uninitialized at index `i` in entry block `bb`. */
predicate uninitializedWrite(Cfg::EntryBasicBlock bb, int i, LocalVariable v) {
@@ -204,7 +221,7 @@ private predicate adjacentDefRead(
Definition def, SsaInput::BasicBlock bb1, int i1, SsaInput::BasicBlock bb2, int i2,
SsaInput::SourceVariable v
) {
adjacentDefRead(def, bb1, i1, bb2, i2) and
Impl::adjacentDefRead(def, bb1, i1, bb2, i2) and
v = def.getSourceVariable()
}
@@ -220,7 +237,7 @@ private predicate adjacentDefReachesRead(
exists(SsaInput::BasicBlock bb3, int i3 |
adjacentDefReachesRead(def, bb1, i1, bb3, i3) and
SsaInput::variableRead(bb3, i3, _, false) and
adjacentDefRead(def, bb3, i3, bb2, i2)
Impl::adjacentDefRead(def, bb3, i3, bb2, i2)
)
}
@@ -243,11 +260,11 @@ private predicate adjacentDefReachesUncertainRead(
/** Same as `lastRefRedef`, but skips uncertain reads. */
pragma[nomagic]
private predicate lastRefSkipUncertainReads(Definition def, SsaInput::BasicBlock bb, int i) {
lastRef(def, bb, i) and
Impl::lastRef(def, bb, i) and
not SsaInput::variableRead(bb, i, def.getSourceVariable(), false)
or
exists(SsaInput::BasicBlock bb0, int i0 |
lastRef(def, bb0, i0) and
Impl::lastRef(def, bb0, i0) and
adjacentDefReachesUncertainRead(def, bb, i, bb0, i0)
)
}
@@ -304,7 +321,7 @@ private module Cached {
cached
VariableReadAccessCfgNode getARead(Definition def) {
exists(LocalVariable v, Cfg::BasicBlock bb, int i |
ssaDefReachesRead(v, def, bb, i) and
Impl::ssaDefReachesRead(v, def, bb, i) and
variableReadActual(bb, i, v) and
result = bb.getNode(i)
)
@@ -315,7 +332,7 @@ private module Cached {
Definition def, CallCfgNode call, LocalVariable v, Cfg::CfgScope scope
) {
exists(Cfg::BasicBlock bb, int i |
ssaDefReachesRead(v, def, bb, i) and
Impl::ssaDefReachesRead(v, def, bb, i) and
capturedCallRead(call, bb, i, v) and
scope.getOuterCfgScope() = bb.getScope()
)
@@ -360,7 +377,7 @@ private module Cached {
Definition def, LocalVariable v, Cfg::CfgScope scope
) {
exists(Cfg::BasicBlock bb, int i |
ssaDefReachesRead(v, def, bb, i) and
Impl::ssaDefReachesRead(v, def, bb, i) and
capturedExitRead(bb, i, v) and
scope = bb.getScope().getOuterCfgScope*()
)
@@ -403,7 +420,7 @@ private module Cached {
cached
Definition phiHasInputFromBlock(PhiNode phi, Cfg::BasicBlock bb) {
phiHasInputFromBlock(phi, result, bb)
Impl::phiHasInputFromBlock(phi, result, bb)
}
/**
@@ -459,19 +476,45 @@ private module Cached {
*/
cached
predicate lastRefBeforeRedef(Definition def, Cfg::BasicBlock bb, int i, Definition next) {
lastRefRedef(def, bb, i, next) and
Impl::lastRefRedef(def, bb, i, next) and
not SsaInput::variableRead(bb, i, def.getSourceVariable(), false)
or
exists(SsaInput::BasicBlock bb0, int i0 |
lastRefRedef(def, bb0, i0, next) and
Impl::lastRefRedef(def, bb0, i0, next) and
adjacentDefReachesUncertainRead(def, bb, i, bb0, i0)
)
}
cached
Definition uncertainWriteDefinitionInput(UncertainWriteDefinition def) {
uncertainWriteDefinitionInput(def, result)
Impl::uncertainWriteDefinitionInput(def, result)
}
}
import Cached
/**
* An extended static single assignment (SSA) definition.
*
* This is either a normal SSA definition (`Definition`) or a
* phi-read node (`PhiReadNode`).
*
* Only intended for internal use.
*/
class DefinitionExt extends Impl::DefinitionExt {
override string toString() { result = this.(Ssa::Definition).toString() }
/** Gets the location of this definition. */
Location getLocation() { result = this.(Ssa::Definition).getLocation() }
}
/**
* A phi-read node.
*
* Only intended for internal use.
*/
class PhiReadNode extends DefinitionExt, Impl::PhiReadNode {
override string toString() { result = "SSA phi read(" + this.getSourceVariable() + ")" }
override Location getLocation() { result = this.getBasicBlock().getLocation() }
}

109
ruby/ql/test/library-tests/dataflow/local/DataflowStep.expected
View File

@@ -1,6 +1,6 @@
| local_dataflow.rb:1:1:7:3 | self (foo) | local_dataflow.rb:3:8:3:10 | self |
| local_dataflow.rb:1:1:7:3 | self in foo | local_dataflow.rb:1:1:7:3 | self (foo) |
| local_dataflow.rb:1:1:124:4 | self (local_dataflow.rb) | local_dataflow.rb:49:1:53:3 | self |
| local_dataflow.rb:1:1:150:3 | self (local_dataflow.rb) | local_dataflow.rb:49:1:53:3 | self |
| local_dataflow.rb:1:9:1:9 | a | local_dataflow.rb:1:9:1:9 | a |
| local_dataflow.rb:1:9:1:9 | a | local_dataflow.rb:2:7:2:7 | a |
| local_dataflow.rb:2:3:2:7 | ... = ... | local_dataflow.rb:3:13:3:13 | b |
@@ -279,3 +279,110 @@
| local_dataflow.rb:123:8:123:20 | call to dup | local_dataflow.rb:123:8:123:45 | call to tap |
| local_dataflow.rb:123:8:123:45 | call to tap | local_dataflow.rb:123:8:123:49 | call to dup |
| local_dataflow.rb:123:26:123:45 | <captured> self | local_dataflow.rb:123:32:123:43 | self |
| local_dataflow.rb:126:1:128:3 | self (use) | local_dataflow.rb:127:3:127:8 | self |
| local_dataflow.rb:126:1:128:3 | self in use | local_dataflow.rb:126:1:128:3 | self (use) |
| local_dataflow.rb:130:1:150:3 | self (use_use_madness) | local_dataflow.rb:132:6:132:11 | self |
| local_dataflow.rb:130:1:150:3 | self in use_use_madness | local_dataflow.rb:130:1:150:3 | self (use_use_madness) |
| local_dataflow.rb:131:3:131:8 | ... = ... | local_dataflow.rb:132:10:132:10 | x |
| local_dataflow.rb:131:7:131:8 | "" | local_dataflow.rb:131:3:131:8 | ... = ... |
| local_dataflow.rb:131:7:131:8 | "" | local_dataflow.rb:131:3:131:8 | ... = ... |
| local_dataflow.rb:132:6:132:11 | [post] self | local_dataflow.rb:133:8:133:13 | self |
| local_dataflow.rb:132:6:132:11 | self | local_dataflow.rb:133:8:133:13 | self |
| local_dataflow.rb:132:10:132:10 | x | local_dataflow.rb:133:12:133:12 | x |
| local_dataflow.rb:132:12:148:10 | then ... | local_dataflow.rb:132:3:149:5 | if ... |
| local_dataflow.rb:133:8:133:13 | [post] self | local_dataflow.rb:133:18:133:23 | self |
| local_dataflow.rb:133:8:133:13 | [post] self | local_dataflow.rb:134:7:134:12 | self |
| local_dataflow.rb:133:8:133:13 | call to use | local_dataflow.rb:133:8:133:23 | [false] ... \|\| ... |
| local_dataflow.rb:133:8:133:13 | call to use | local_dataflow.rb:133:8:133:23 | [true] ... \|\| ... |
| local_dataflow.rb:133:8:133:13 | self | local_dataflow.rb:133:18:133:23 | self |
| local_dataflow.rb:133:8:133:13 | self | local_dataflow.rb:134:7:134:12 | self |
| local_dataflow.rb:133:12:133:12 | x | local_dataflow.rb:133:22:133:22 | x |
| local_dataflow.rb:133:12:133:12 | x | local_dataflow.rb:134:11:134:11 | x |
| local_dataflow.rb:133:18:133:23 | [post] self | local_dataflow.rb:134:7:134:12 | self |
| local_dataflow.rb:133:18:133:23 | [post] self | local_dataflow.rb:136:7:136:12 | self |
| local_dataflow.rb:133:18:133:23 | call to use | local_dataflow.rb:133:8:133:23 | [false] ... \|\| ... |
| local_dataflow.rb:133:18:133:23 | call to use | local_dataflow.rb:133:8:133:23 | [true] ... \|\| ... |
| local_dataflow.rb:133:18:133:23 | self | local_dataflow.rb:134:7:134:12 | self |
| local_dataflow.rb:133:18:133:23 | self | local_dataflow.rb:136:7:136:12 | self |
| local_dataflow.rb:133:22:133:22 | x | local_dataflow.rb:134:11:134:11 | x |
| local_dataflow.rb:133:22:133:22 | x | local_dataflow.rb:136:11:136:11 | x |
| local_dataflow.rb:133:24:134:12 | then ... | local_dataflow.rb:133:5:139:7 | if ... |
| local_dataflow.rb:134:7:134:12 | [post] self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:134:7:134:12 | call to use | local_dataflow.rb:133:24:134:12 | then ... |
| local_dataflow.rb:134:7:134:12 | self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:134:11:134:11 | x | local_dataflow.rb:141:13:141:13 | x |
| local_dataflow.rb:135:5:138:9 | else ... | local_dataflow.rb:133:5:139:7 | if ... |
| local_dataflow.rb:136:7:136:12 | [post] self | local_dataflow.rb:137:10:137:15 | self |
| local_dataflow.rb:136:7:136:12 | self | local_dataflow.rb:137:10:137:15 | self |
| local_dataflow.rb:136:11:136:11 | x | local_dataflow.rb:137:14:137:14 | x |
| local_dataflow.rb:137:7:138:9 | if ... | local_dataflow.rb:135:5:138:9 | else ... |
| local_dataflow.rb:137:10:137:15 | [post] self | local_dataflow.rb:137:21:137:26 | self |
| local_dataflow.rb:137:10:137:15 | [post] self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:137:10:137:15 | call to use | local_dataflow.rb:137:10:137:26 | [false] ... && ... |
| local_dataflow.rb:137:10:137:15 | call to use | local_dataflow.rb:137:10:137:26 | [true] ... && ... |
| local_dataflow.rb:137:10:137:15 | self | local_dataflow.rb:137:21:137:26 | self |
| local_dataflow.rb:137:10:137:15 | self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:137:14:137:14 | x | local_dataflow.rb:137:25:137:25 | x |
| local_dataflow.rb:137:14:137:14 | x | local_dataflow.rb:141:13:141:13 | x |
| local_dataflow.rb:137:20:137:26 | [false] ! ... | local_dataflow.rb:137:10:137:26 | [false] ... && ... |
| local_dataflow.rb:137:20:137:26 | [true] ! ... | local_dataflow.rb:137:10:137:26 | [true] ... && ... |
| local_dataflow.rb:137:21:137:26 | [post] self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:137:21:137:26 | self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:137:25:137:25 | x | local_dataflow.rb:141:13:141:13 | x |
| local_dataflow.rb:141:8:141:14 | [false] ! ... | local_dataflow.rb:141:8:141:37 | [false] ... \|\| ... |
| local_dataflow.rb:141:8:141:14 | [false] ! ... | local_dataflow.rb:141:8:141:37 | [true] ... \|\| ... |
| local_dataflow.rb:141:8:141:14 | [true] ! ... | local_dataflow.rb:141:8:141:37 | [true] ... \|\| ... |
| local_dataflow.rb:141:9:141:14 | [post] self | local_dataflow.rb:141:20:141:25 | self |
| local_dataflow.rb:141:9:141:14 | [post] self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:141:9:141:14 | self | local_dataflow.rb:141:20:141:25 | self |
| local_dataflow.rb:141:9:141:14 | self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:141:13:141:13 | x | local_dataflow.rb:141:24:141:24 | x |
| local_dataflow.rb:141:13:141:13 | x | local_dataflow.rb:147:9:147:9 | x |
| local_dataflow.rb:141:19:141:37 | [false] ( ... ) | local_dataflow.rb:141:8:141:37 | [false] ... \|\| ... |
| local_dataflow.rb:141:19:141:37 | [true] ( ... ) | local_dataflow.rb:141:8:141:37 | [true] ... \|\| ... |
| local_dataflow.rb:141:20:141:25 | [post] self | local_dataflow.rb:141:31:141:36 | self |
| local_dataflow.rb:141:20:141:25 | [post] self | local_dataflow.rb:143:11:143:16 | self |
| local_dataflow.rb:141:20:141:25 | call to use | local_dataflow.rb:141:20:141:36 | [false] ... && ... |
| local_dataflow.rb:141:20:141:25 | call to use | local_dataflow.rb:141:20:141:36 | [true] ... && ... |
| local_dataflow.rb:141:20:141:25 | self | local_dataflow.rb:141:31:141:36 | self |
| local_dataflow.rb:141:20:141:25 | self | local_dataflow.rb:143:11:143:16 | self |
| local_dataflow.rb:141:20:141:36 | [false] ... && ... | local_dataflow.rb:141:19:141:37 | [false] ( ... ) |
| local_dataflow.rb:141:20:141:36 | [true] ... && ... | local_dataflow.rb:141:19:141:37 | [true] ( ... ) |
| local_dataflow.rb:141:24:141:24 | x | local_dataflow.rb:141:35:141:35 | x |
| local_dataflow.rb:141:24:141:24 | x | local_dataflow.rb:143:15:143:15 | x |
| local_dataflow.rb:141:30:141:36 | [false] ! ... | local_dataflow.rb:141:20:141:36 | [false] ... && ... |
| local_dataflow.rb:141:30:141:36 | [true] ! ... | local_dataflow.rb:141:20:141:36 | [true] ... && ... |
| local_dataflow.rb:141:31:141:36 | [post] self | local_dataflow.rb:143:11:143:16 | self |
| local_dataflow.rb:141:31:141:36 | [post] self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:141:31:141:36 | self | local_dataflow.rb:143:11:143:16 | self |
| local_dataflow.rb:141:31:141:36 | self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:141:35:141:35 | x | local_dataflow.rb:143:15:143:15 | x |
| local_dataflow.rb:141:35:141:35 | x | local_dataflow.rb:147:9:147:9 | x |
| local_dataflow.rb:141:38:142:9 | then ... | local_dataflow.rb:141:5:145:7 | if ... |
| local_dataflow.rb:142:7:142:9 | nil | local_dataflow.rb:141:38:142:9 | then ... |
| local_dataflow.rb:143:5:144:16 | elsif ... | local_dataflow.rb:141:5:145:7 | if ... |
| local_dataflow.rb:143:11:143:16 | [post] self | local_dataflow.rb:143:21:143:26 | self |
| local_dataflow.rb:143:11:143:16 | [post] self | local_dataflow.rb:144:11:144:16 | self |
| local_dataflow.rb:143:11:143:16 | call to use | local_dataflow.rb:143:11:143:26 | [false] ... \|\| ... |
| local_dataflow.rb:143:11:143:16 | call to use | local_dataflow.rb:143:11:143:26 | [true] ... \|\| ... |
| local_dataflow.rb:143:11:143:16 | self | local_dataflow.rb:143:21:143:26 | self |
| local_dataflow.rb:143:11:143:16 | self | local_dataflow.rb:144:11:144:16 | self |
| local_dataflow.rb:143:15:143:15 | x | local_dataflow.rb:143:25:143:25 | x |
| local_dataflow.rb:143:15:143:15 | x | local_dataflow.rb:144:15:144:15 | x |
| local_dataflow.rb:143:21:143:26 | [post] self | local_dataflow.rb:144:11:144:16 | self |
| local_dataflow.rb:143:21:143:26 | [post] self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:143:21:143:26 | call to use | local_dataflow.rb:143:11:143:26 | [false] ... \|\| ... |
| local_dataflow.rb:143:21:143:26 | call to use | local_dataflow.rb:143:11:143:26 | [true] ... \|\| ... |
| local_dataflow.rb:143:21:143:26 | self | local_dataflow.rb:144:11:144:16 | self |
| local_dataflow.rb:143:21:143:26 | self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:143:25:143:25 | x | local_dataflow.rb:144:15:144:15 | x |
| local_dataflow.rb:143:25:143:25 | x | local_dataflow.rb:147:9:147:9 | x |
| local_dataflow.rb:143:27:144:16 | then ... | local_dataflow.rb:143:5:144:16 | elsif ... |
| local_dataflow.rb:144:11:144:16 | [post] self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:144:11:144:16 | call to use | local_dataflow.rb:143:27:144:16 | then ... |
| local_dataflow.rb:144:11:144:16 | self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:144:15:144:15 | x | local_dataflow.rb:147:9:147:9 | x |
| local_dataflow.rb:147:5:147:10 | [post] self | local_dataflow.rb:148:5:148:10 | self |
| local_dataflow.rb:147:5:147:10 | self | local_dataflow.rb:148:5:148:10 | self |
| local_dataflow.rb:147:9:147:9 | x | local_dataflow.rb:148:9:148:9 | x |
| local_dataflow.rb:148:5:148:10 | call to use | local_dataflow.rb:132:12:148:10 | then ... |

60
ruby/ql/test/library-tests/dataflow/local/Nodes.expected
View File

@@ -19,6 +19,8 @@ ret
| local_dataflow.rb:119:3:119:31 | call to sink |
| local_dataflow.rb:123:3:123:50 | call to sink |
| local_dataflow.rb:123:32:123:43 | call to puts |
| local_dataflow.rb:127:3:127:8 | call to rand |
| local_dataflow.rb:132:3:149:5 | if ... |
arg
| local_dataflow.rb:3:8:3:10 | self | local_dataflow.rb:3:8:3:10 | call to p | self |
| local_dataflow.rb:3:10:3:10 | a | local_dataflow.rb:3:8:3:10 | call to p | position 0 |
@@ -170,3 +172,61 @@ arg
| local_dataflow.rb:123:26:123:45 | { ... } | local_dataflow.rb:123:8:123:45 | call to tap | block |
| local_dataflow.rb:123:32:123:43 | self | local_dataflow.rb:123:32:123:43 | call to puts | self |
| local_dataflow.rb:123:37:123:43 | "hello" | local_dataflow.rb:123:32:123:43 | call to puts | position 0 |
| local_dataflow.rb:127:3:127:8 | self | local_dataflow.rb:127:3:127:8 | call to rand | self |
| local_dataflow.rb:132:6:132:11 | self | local_dataflow.rb:132:6:132:11 | call to use | self |
| local_dataflow.rb:132:10:132:10 | x | local_dataflow.rb:132:6:132:11 | call to use | position 0 |
| local_dataflow.rb:133:8:133:13 | call to use | local_dataflow.rb:133:8:133:23 | [false] ... \|\| ... | self |
| local_dataflow.rb:133:8:133:13 | call to use | local_dataflow.rb:133:8:133:23 | [true] ... \|\| ... | self |
| local_dataflow.rb:133:8:133:13 | self | local_dataflow.rb:133:8:133:13 | call to use | self |
| local_dataflow.rb:133:12:133:12 | x | local_dataflow.rb:133:8:133:13 | call to use | position 0 |
| local_dataflow.rb:133:18:133:23 | call to use | local_dataflow.rb:133:8:133:23 | [false] ... \|\| ... | position 0 |
| local_dataflow.rb:133:18:133:23 | call to use | local_dataflow.rb:133:8:133:23 | [true] ... \|\| ... | position 0 |
| local_dataflow.rb:133:18:133:23 | self | local_dataflow.rb:133:18:133:23 | call to use | self |
| local_dataflow.rb:133:22:133:22 | x | local_dataflow.rb:133:18:133:23 | call to use | position 0 |
| local_dataflow.rb:134:7:134:12 | self | local_dataflow.rb:134:7:134:12 | call to use | self |
| local_dataflow.rb:134:11:134:11 | x | local_dataflow.rb:134:7:134:12 | call to use | position 0 |
| local_dataflow.rb:136:7:136:12 | self | local_dataflow.rb:136:7:136:12 | call to use | self |
| local_dataflow.rb:136:11:136:11 | x | local_dataflow.rb:136:7:136:12 | call to use | position 0 |
| local_dataflow.rb:137:10:137:15 | call to use | local_dataflow.rb:137:10:137:26 | [false] ... && ... | self |
| local_dataflow.rb:137:10:137:15 | call to use | local_dataflow.rb:137:10:137:26 | [true] ... && ... | self |
| local_dataflow.rb:137:10:137:15 | self | local_dataflow.rb:137:10:137:15 | call to use | self |
| local_dataflow.rb:137:14:137:14 | x | local_dataflow.rb:137:10:137:15 | call to use | position 0 |
| local_dataflow.rb:137:20:137:26 | [false] ! ... | local_dataflow.rb:137:10:137:26 | [false] ... && ... | position 0 |
| local_dataflow.rb:137:20:137:26 | [true] ! ... | local_dataflow.rb:137:10:137:26 | [true] ... && ... | position 0 |
| local_dataflow.rb:137:21:137:26 | call to use | local_dataflow.rb:137:20:137:26 | [false] ! ... | self |
| local_dataflow.rb:137:21:137:26 | call to use | local_dataflow.rb:137:20:137:26 | [true] ! ... | self |
| local_dataflow.rb:137:21:137:26 | self | local_dataflow.rb:137:21:137:26 | call to use | self |
| local_dataflow.rb:137:25:137:25 | x | local_dataflow.rb:137:21:137:26 | call to use | position 0 |
| local_dataflow.rb:141:8:141:14 | [false] ! ... | local_dataflow.rb:141:8:141:37 | [false] ... \|\| ... | self |
| local_dataflow.rb:141:8:141:14 | [false] ! ... | local_dataflow.rb:141:8:141:37 | [true] ... \|\| ... | self |
| local_dataflow.rb:141:8:141:14 | [true] ! ... | local_dataflow.rb:141:8:141:37 | [true] ... \|\| ... | self |
| local_dataflow.rb:141:9:141:14 | call to use | local_dataflow.rb:141:8:141:14 | [false] ! ... | self |
| local_dataflow.rb:141:9:141:14 | call to use | local_dataflow.rb:141:8:141:14 | [true] ! ... | self |
| local_dataflow.rb:141:9:141:14 | self | local_dataflow.rb:141:9:141:14 | call to use | self |
| local_dataflow.rb:141:13:141:13 | x | local_dataflow.rb:141:9:141:14 | call to use | position 0 |
| local_dataflow.rb:141:19:141:37 | [false] ( ... ) | local_dataflow.rb:141:8:141:37 | [false] ... \|\| ... | position 0 |
| local_dataflow.rb:141:19:141:37 | [true] ( ... ) | local_dataflow.rb:141:8:141:37 | [true] ... \|\| ... | position 0 |
| local_dataflow.rb:141:20:141:25 | call to use | local_dataflow.rb:141:20:141:36 | [false] ... && ... | self |
| local_dataflow.rb:141:20:141:25 | call to use | local_dataflow.rb:141:20:141:36 | [true] ... && ... | self |
| local_dataflow.rb:141:20:141:25 | self | local_dataflow.rb:141:20:141:25 | call to use | self |
| local_dataflow.rb:141:24:141:24 | x | local_dataflow.rb:141:20:141:25 | call to use | position 0 |
| local_dataflow.rb:141:30:141:36 | [false] ! ... | local_dataflow.rb:141:20:141:36 | [false] ... && ... | position 0 |
| local_dataflow.rb:141:30:141:36 | [true] ! ... | local_dataflow.rb:141:20:141:36 | [true] ... && ... | position 0 |
| local_dataflow.rb:141:31:141:36 | call to use | local_dataflow.rb:141:30:141:36 | [false] ! ... | self |
| local_dataflow.rb:141:31:141:36 | call to use | local_dataflow.rb:141:30:141:36 | [true] ! ... | self |
| local_dataflow.rb:141:31:141:36 | self | local_dataflow.rb:141:31:141:36 | call to use | self |
| local_dataflow.rb:141:35:141:35 | x | local_dataflow.rb:141:31:141:36 | call to use | position 0 |
| local_dataflow.rb:143:11:143:16 | call to use | local_dataflow.rb:143:11:143:26 | [false] ... \|\| ... | self |
| local_dataflow.rb:143:11:143:16 | call to use | local_dataflow.rb:143:11:143:26 | [true] ... \|\| ... | self |
| local_dataflow.rb:143:11:143:16 | self | local_dataflow.rb:143:11:143:16 | call to use | self |
| local_dataflow.rb:143:15:143:15 | x | local_dataflow.rb:143:11:143:16 | call to use | position 0 |
| local_dataflow.rb:143:21:143:26 | call to use | local_dataflow.rb:143:11:143:26 | [false] ... \|\| ... | position 0 |
| local_dataflow.rb:143:21:143:26 | call to use | local_dataflow.rb:143:11:143:26 | [true] ... \|\| ... | position 0 |
| local_dataflow.rb:143:21:143:26 | self | local_dataflow.rb:143:21:143:26 | call to use | self |
| local_dataflow.rb:143:25:143:25 | x | local_dataflow.rb:143:21:143:26 | call to use | position 0 |
| local_dataflow.rb:144:11:144:16 | self | local_dataflow.rb:144:11:144:16 | call to use | self |
| local_dataflow.rb:144:15:144:15 | x | local_dataflow.rb:144:11:144:16 | call to use | position 0 |
| local_dataflow.rb:147:5:147:10 | self | local_dataflow.rb:147:5:147:10 | call to use | self |
| local_dataflow.rb:147:9:147:9 | x | local_dataflow.rb:147:5:147:10 | call to use | position 0 |
| local_dataflow.rb:148:5:148:10 | self | local_dataflow.rb:148:5:148:10 | call to use | self |
| local_dataflow.rb:148:9:148:9 | x | local_dataflow.rb:148:5:148:10 | call to use | position 0 |

115
ruby/ql/test/library-tests/dataflow/local/TaintStep.expected
View File

@@ -50,7 +50,7 @@
| file://:0:0:0:0 | parameter self of each(0) | file://:0:0:0:0 | [summary] read: argument self.any element in each(0) |
| local_dataflow.rb:1:1:7:3 | self (foo) | local_dataflow.rb:3:8:3:10 | self |
| local_dataflow.rb:1:1:7:3 | self in foo | local_dataflow.rb:1:1:7:3 | self (foo) |
| local_dataflow.rb:1:1:124:4 | self (local_dataflow.rb) | local_dataflow.rb:49:1:53:3 | self |
| local_dataflow.rb:1:1:150:3 | self (local_dataflow.rb) | local_dataflow.rb:49:1:53:3 | self |
| local_dataflow.rb:1:9:1:9 | a | local_dataflow.rb:1:9:1:9 | a |
| local_dataflow.rb:1:9:1:9 | a | local_dataflow.rb:2:7:2:7 | a |
| local_dataflow.rb:2:3:2:7 | ... = ... | local_dataflow.rb:3:13:3:13 | b |
@@ -354,3 +354,116 @@
| local_dataflow.rb:123:8:123:20 | call to dup | local_dataflow.rb:123:8:123:45 | call to tap |
| local_dataflow.rb:123:8:123:45 | call to tap | local_dataflow.rb:123:8:123:49 | call to dup |
| local_dataflow.rb:123:26:123:45 | <captured> self | local_dataflow.rb:123:32:123:43 | self |
| local_dataflow.rb:126:1:128:3 | self (use) | local_dataflow.rb:127:3:127:8 | self |
| local_dataflow.rb:126:1:128:3 | self in use | local_dataflow.rb:126:1:128:3 | self (use) |
| local_dataflow.rb:130:1:150:3 | self (use_use_madness) | local_dataflow.rb:132:6:132:11 | self |
| local_dataflow.rb:130:1:150:3 | self in use_use_madness | local_dataflow.rb:130:1:150:3 | self (use_use_madness) |
| local_dataflow.rb:131:3:131:8 | ... = ... | local_dataflow.rb:132:10:132:10 | x |
| local_dataflow.rb:131:7:131:8 | "" | local_dataflow.rb:131:3:131:8 | ... = ... |
| local_dataflow.rb:131:7:131:8 | "" | local_dataflow.rb:131:3:131:8 | ... = ... |
| local_dataflow.rb:132:6:132:11 | [post] self | local_dataflow.rb:133:8:133:13 | self |
| local_dataflow.rb:132:6:132:11 | self | local_dataflow.rb:133:8:133:13 | self |
| local_dataflow.rb:132:10:132:10 | x | local_dataflow.rb:133:12:133:12 | x |
| local_dataflow.rb:132:12:148:10 | then ... | local_dataflow.rb:132:3:149:5 | if ... |
| local_dataflow.rb:133:8:133:13 | [post] self | local_dataflow.rb:133:18:133:23 | self |
| local_dataflow.rb:133:8:133:13 | [post] self | local_dataflow.rb:134:7:134:12 | self |
| local_dataflow.rb:133:8:133:13 | call to use | local_dataflow.rb:133:8:133:23 | [false] ... \|\| ... |
| local_dataflow.rb:133:8:133:13 | call to use | local_dataflow.rb:133:8:133:23 | [true] ... \|\| ... |
| local_dataflow.rb:133:8:133:13 | self | local_dataflow.rb:133:18:133:23 | self |
| local_dataflow.rb:133:8:133:13 | self | local_dataflow.rb:134:7:134:12 | self |
| local_dataflow.rb:133:12:133:12 | x | local_dataflow.rb:133:22:133:22 | x |
| local_dataflow.rb:133:12:133:12 | x | local_dataflow.rb:134:11:134:11 | x |
| local_dataflow.rb:133:18:133:23 | [post] self | local_dataflow.rb:134:7:134:12 | self |
| local_dataflow.rb:133:18:133:23 | [post] self | local_dataflow.rb:136:7:136:12 | self |
| local_dataflow.rb:133:18:133:23 | call to use | local_dataflow.rb:133:8:133:23 | [false] ... \|\| ... |
| local_dataflow.rb:133:18:133:23 | call to use | local_dataflow.rb:133:8:133:23 | [true] ... \|\| ... |
| local_dataflow.rb:133:18:133:23 | self | local_dataflow.rb:134:7:134:12 | self |
| local_dataflow.rb:133:18:133:23 | self | local_dataflow.rb:136:7:136:12 | self |
| local_dataflow.rb:133:22:133:22 | x | local_dataflow.rb:134:11:134:11 | x |
| local_dataflow.rb:133:22:133:22 | x | local_dataflow.rb:136:11:136:11 | x |
| local_dataflow.rb:133:24:134:12 | then ... | local_dataflow.rb:133:5:139:7 | if ... |
| local_dataflow.rb:134:7:134:12 | [post] self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:134:7:134:12 | call to use | local_dataflow.rb:133:24:134:12 | then ... |
| local_dataflow.rb:134:7:134:12 | self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:134:11:134:11 | x | local_dataflow.rb:141:13:141:13 | x |
| local_dataflow.rb:135:5:138:9 | else ... | local_dataflow.rb:133:5:139:7 | if ... |
| local_dataflow.rb:136:7:136:12 | [post] self | local_dataflow.rb:137:10:137:15 | self |
| local_dataflow.rb:136:7:136:12 | self | local_dataflow.rb:137:10:137:15 | self |
| local_dataflow.rb:136:11:136:11 | x | local_dataflow.rb:137:14:137:14 | x |
| local_dataflow.rb:137:7:138:9 | if ... | local_dataflow.rb:135:5:138:9 | else ... |
| local_dataflow.rb:137:10:137:15 | [post] self | local_dataflow.rb:137:21:137:26 | self |
| local_dataflow.rb:137:10:137:15 | [post] self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:137:10:137:15 | call to use | local_dataflow.rb:137:10:137:26 | [false] ... && ... |
| local_dataflow.rb:137:10:137:15 | call to use | local_dataflow.rb:137:10:137:26 | [true] ... && ... |
| local_dataflow.rb:137:10:137:15 | self | local_dataflow.rb:137:21:137:26 | self |
| local_dataflow.rb:137:10:137:15 | self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:137:14:137:14 | x | local_dataflow.rb:137:25:137:25 | x |
| local_dataflow.rb:137:14:137:14 | x | local_dataflow.rb:141:13:141:13 | x |
| local_dataflow.rb:137:20:137:26 | [false] ! ... | local_dataflow.rb:137:10:137:26 | [false] ... && ... |
| local_dataflow.rb:137:20:137:26 | [true] ! ... | local_dataflow.rb:137:10:137:26 | [true] ... && ... |
| local_dataflow.rb:137:21:137:26 | [post] self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:137:21:137:26 | call to use | local_dataflow.rb:137:20:137:26 | [false] ! ... |
| local_dataflow.rb:137:21:137:26 | call to use | local_dataflow.rb:137:20:137:26 | [true] ! ... |
| local_dataflow.rb:137:21:137:26 | self | local_dataflow.rb:141:9:141:14 | self |
| local_dataflow.rb:137:25:137:25 | x | local_dataflow.rb:141:13:141:13 | x |
| local_dataflow.rb:141:8:141:14 | [false] ! ... | local_dataflow.rb:141:8:141:37 | [false] ... \|\| ... |
| local_dataflow.rb:141:8:141:14 | [false] ! ... | local_dataflow.rb:141:8:141:37 | [true] ... \|\| ... |
| local_dataflow.rb:141:8:141:14 | [true] ! ... | local_dataflow.rb:141:8:141:37 | [true] ... \|\| ... |
| local_dataflow.rb:141:9:141:14 | [post] self | local_dataflow.rb:141:20:141:25 | self |
| local_dataflow.rb:141:9:141:14 | [post] self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:141:9:141:14 | call to use | local_dataflow.rb:141:8:141:14 | [false] ! ... |
| local_dataflow.rb:141:9:141:14 | call to use | local_dataflow.rb:141:8:141:14 | [true] ! ... |
| local_dataflow.rb:141:9:141:14 | self | local_dataflow.rb:141:20:141:25 | self |
| local_dataflow.rb:141:9:141:14 | self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:141:13:141:13 | x | local_dataflow.rb:141:24:141:24 | x |
| local_dataflow.rb:141:13:141:13 | x | local_dataflow.rb:147:9:147:9 | x |
| local_dataflow.rb:141:19:141:37 | [false] ( ... ) | local_dataflow.rb:141:8:141:37 | [false] ... \|\| ... |
| local_dataflow.rb:141:19:141:37 | [true] ( ... ) | local_dataflow.rb:141:8:141:37 | [true] ... \|\| ... |
| local_dataflow.rb:141:20:141:25 | [post] self | local_dataflow.rb:141:31:141:36 | self |
| local_dataflow.rb:141:20:141:25 | [post] self | local_dataflow.rb:143:11:143:16 | self |
| local_dataflow.rb:141:20:141:25 | call to use | local_dataflow.rb:141:20:141:36 | [false] ... && ... |
| local_dataflow.rb:141:20:141:25 | call to use | local_dataflow.rb:141:20:141:36 | [true] ... && ... |
| local_dataflow.rb:141:20:141:25 | self | local_dataflow.rb:141:31:141:36 | self |
| local_dataflow.rb:141:20:141:25 | self | local_dataflow.rb:143:11:143:16 | self |
| local_dataflow.rb:141:20:141:36 | [false] ... && ... | local_dataflow.rb:141:19:141:37 | [false] ( ... ) |
| local_dataflow.rb:141:20:141:36 | [true] ... && ... | local_dataflow.rb:141:19:141:37 | [true] ( ... ) |
| local_dataflow.rb:141:24:141:24 | x | local_dataflow.rb:141:35:141:35 | x |
| local_dataflow.rb:141:24:141:24 | x | local_dataflow.rb:143:15:143:15 | x |
| local_dataflow.rb:141:30:141:36 | [false] ! ... | local_dataflow.rb:141:20:141:36 | [false] ... && ... |
| local_dataflow.rb:141:30:141:36 | [true] ! ... | local_dataflow.rb:141:20:141:36 | [true] ... && ... |
| local_dataflow.rb:141:31:141:36 | [post] self | local_dataflow.rb:143:11:143:16 | self |
| local_dataflow.rb:141:31:141:36 | [post] self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:141:31:141:36 | call to use | local_dataflow.rb:141:30:141:36 | [false] ! ... |
| local_dataflow.rb:141:31:141:36 | call to use | local_dataflow.rb:141:30:141:36 | [true] ! ... |
| local_dataflow.rb:141:31:141:36 | self | local_dataflow.rb:143:11:143:16 | self |
| local_dataflow.rb:141:31:141:36 | self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:141:35:141:35 | x | local_dataflow.rb:143:15:143:15 | x |
| local_dataflow.rb:141:35:141:35 | x | local_dataflow.rb:147:9:147:9 | x |
| local_dataflow.rb:141:38:142:9 | then ... | local_dataflow.rb:141:5:145:7 | if ... |
| local_dataflow.rb:142:7:142:9 | nil | local_dataflow.rb:141:38:142:9 | then ... |
| local_dataflow.rb:143:5:144:16 | elsif ... | local_dataflow.rb:141:5:145:7 | if ... |
| local_dataflow.rb:143:11:143:16 | [post] self | local_dataflow.rb:143:21:143:26 | self |
| local_dataflow.rb:143:11:143:16 | [post] self | local_dataflow.rb:144:11:144:16 | self |
| local_dataflow.rb:143:11:143:16 | call to use | local_dataflow.rb:143:11:143:26 | [false] ... \|\| ... |
| local_dataflow.rb:143:11:143:16 | call to use | local_dataflow.rb:143:11:143:26 | [true] ... \|\| ... |
| local_dataflow.rb:143:11:143:16 | self | local_dataflow.rb:143:21:143:26 | self |
| local_dataflow.rb:143:11:143:16 | self | local_dataflow.rb:144:11:144:16 | self |
| local_dataflow.rb:143:15:143:15 | x | local_dataflow.rb:143:25:143:25 | x |
| local_dataflow.rb:143:15:143:15 | x | local_dataflow.rb:144:15:144:15 | x |
| local_dataflow.rb:143:21:143:26 | [post] self | local_dataflow.rb:144:11:144:16 | self |
| local_dataflow.rb:143:21:143:26 | [post] self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:143:21:143:26 | call to use | local_dataflow.rb:143:11:143:26 | [false] ... \|\| ... |
| local_dataflow.rb:143:21:143:26 | call to use | local_dataflow.rb:143:11:143:26 | [true] ... \|\| ... |
| local_dataflow.rb:143:21:143:26 | self | local_dataflow.rb:144:11:144:16 | self |
| local_dataflow.rb:143:21:143:26 | self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:143:25:143:25 | x | local_dataflow.rb:144:15:144:15 | x |
| local_dataflow.rb:143:25:143:25 | x | local_dataflow.rb:147:9:147:9 | x |
| local_dataflow.rb:143:27:144:16 | then ... | local_dataflow.rb:143:5:144:16 | elsif ... |
| local_dataflow.rb:144:11:144:16 | [post] self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:144:11:144:16 | call to use | local_dataflow.rb:143:27:144:16 | then ... |
| local_dataflow.rb:144:11:144:16 | self | local_dataflow.rb:147:5:147:10 | self |
| local_dataflow.rb:144:15:144:15 | x | local_dataflow.rb:147:9:147:9 | x |
| local_dataflow.rb:147:5:147:10 | [post] self | local_dataflow.rb:148:5:148:10 | self |
| local_dataflow.rb:147:5:147:10 | self | local_dataflow.rb:148:5:148:10 | self |
| local_dataflow.rb:147:9:147:9 | x | local_dataflow.rb:148:9:148:9 | x |
| local_dataflow.rb:148:5:148:10 | call to use | local_dataflow.rb:132:12:148:10 | then ... |

26
ruby/ql/test/library-tests/dataflow/local/local_dataflow.rb
View File

@@ -122,3 +122,29 @@ end
def dup_tap
sink(source(1).dup.tap { |x| puts "hello" }.dup) # $ hasValueFlow=1
end
def use x
rand()
end
def use_use_madness
x = ""
if use(x)
if use(x) || use(x)
use(x)
else
use(x)
if use(x) && !use(x)
end
end
if !use(x) || (use(x) && !use(x))
nil
elsif use(x) || use(x)
use(x)
end
use(x)
use(x)
end
end

4
ruby/ql/test/library-tests/variables/parameter.expected
View File

@@ -38,6 +38,10 @@ parameterVariable
| ssa.rb:53:8:53:10 | foo | ssa.rb:53:8:53:10 | foo |
| ssa.rb:64:8:64:8 | a | ssa.rb:64:8:64:8 | a |
| ssa.rb:66:15:66:15 | a | ssa.rb:66:15:66:15 | a |
| ssa.rb:90:9:90:10 | b1 | ssa.rb:90:9:90:10 | b1 |
| ssa.rb:90:13:90:14 | b2 | ssa.rb:90:13:90:14 | b2 |
| ssa.rb:90:17:90:18 | b3 | ssa.rb:90:17:90:18 | b3 |
| ssa.rb:90:21:90:22 | b4 | ssa.rb:90:21:90:22 | b4 |
parameterNoVariable
| parameters.rb:45:22:45:22 | _ |
parameterVariableNoAccess

77
ruby/ql/test/library-tests/variables/ssa.expected
View File

@@ -164,6 +164,12 @@ definition
| ssa.rb:83:7:87:5 | <captured> self | ssa.rb:81:1:88:3 | self |
| ssa.rb:84:10:86:8 | <captured> captured | ssa.rb:82:3:82:10 | captured |
| ssa.rb:84:10:86:8 | <captured> self | ssa.rb:81:1:88:3 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self |
| ssa.rb:90:9:90:10 | b1 | ssa.rb:90:9:90:10 | b1 |
| ssa.rb:90:13:90:14 | b2 | ssa.rb:90:13:90:14 | b2 |
| ssa.rb:90:17:90:18 | b3 | ssa.rb:90:17:90:18 | b3 |
| ssa.rb:90:21:90:22 | b4 | ssa.rb:90:21:90:22 | b4 |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x |
read
| class_variables.rb:1:1:29:4 | self (class_variables.rb) | class_variables.rb:1:1:29:4 | self | class_variables.rb:3:1:3:5 | self |
| class_variables.rb:5:1:7:3 | self (print) | class_variables.rb:5:1:7:3 | self | class_variables.rb:6:2:6:6 | self |
@@ -347,6 +353,18 @@ read
| ssa.rb:83:7:87:5 | <captured> self | ssa.rb:81:1:88:3 | self | ssa.rb:84:6:86:8 | self |
| ssa.rb:84:10:86:8 | <captured> captured | ssa.rb:82:3:82:10 | captured | ssa.rb:85:15:85:22 | captured |
| ssa.rb:84:10:86:8 | <captured> self | ssa.rb:81:1:88:3 | self | ssa.rb:85:10:85:22 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:93:5:93:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:95:5:95:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:99:5:99:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:101:5:101:10 | self |
| ssa.rb:90:9:90:10 | b1 | ssa.rb:90:9:90:10 | b1 | ssa.rb:92:7:92:8 | b1 |
| ssa.rb:90:13:90:14 | b2 | ssa.rb:90:13:90:14 | b2 | ssa.rb:94:10:94:11 | b2 |
| ssa.rb:90:17:90:18 | b3 | ssa.rb:90:17:90:18 | b3 | ssa.rb:98:7:98:8 | b3 |
| ssa.rb:90:21:90:22 | b4 | ssa.rb:90:21:90:22 | b4 | ssa.rb:100:10:100:11 | b4 |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:93:10:93:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:95:10:95:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:99:10:99:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:101:10:101:10 | x |
firstRead
| class_variables.rb:1:1:29:4 | self (class_variables.rb) | class_variables.rb:1:1:29:4 | self | class_variables.rb:3:1:3:5 | self |
| class_variables.rb:5:1:7:3 | self (print) | class_variables.rb:5:1:7:3 | self | class_variables.rb:6:2:6:6 | self |
@@ -485,6 +503,18 @@ firstRead
| ssa.rb:83:7:87:5 | <captured> self | ssa.rb:81:1:88:3 | self | ssa.rb:84:6:86:8 | self |
| ssa.rb:84:10:86:8 | <captured> captured | ssa.rb:82:3:82:10 | captured | ssa.rb:85:15:85:22 | captured |
| ssa.rb:84:10:86:8 | <captured> self | ssa.rb:81:1:88:3 | self | ssa.rb:85:10:85:22 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:93:5:93:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:95:5:95:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:99:5:99:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:101:5:101:10 | self |
| ssa.rb:90:9:90:10 | b1 | ssa.rb:90:9:90:10 | b1 | ssa.rb:92:7:92:8 | b1 |
| ssa.rb:90:13:90:14 | b2 | ssa.rb:90:13:90:14 | b2 | ssa.rb:94:10:94:11 | b2 |
| ssa.rb:90:17:90:18 | b3 | ssa.rb:90:17:90:18 | b3 | ssa.rb:98:7:98:8 | b3 |
| ssa.rb:90:21:90:22 | b4 | ssa.rb:90:21:90:22 | b4 | ssa.rb:100:10:100:11 | b4 |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:93:10:93:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:95:10:95:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:99:10:99:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:101:10:101:10 | x |
lastRead
| class_variables.rb:1:1:29:4 | self (class_variables.rb) | class_variables.rb:1:1:29:4 | self | class_variables.rb:3:1:3:5 | self |
| class_variables.rb:5:1:7:3 | self (print) | class_variables.rb:5:1:7:3 | self | class_variables.rb:6:2:6:6 | self |
@@ -624,6 +654,18 @@ lastRead
| ssa.rb:83:7:87:5 | <captured> self | ssa.rb:81:1:88:3 | self | ssa.rb:84:6:86:8 | self |
| ssa.rb:84:10:86:8 | <captured> captured | ssa.rb:82:3:82:10 | captured | ssa.rb:85:15:85:22 | captured |
| ssa.rb:84:10:86:8 | <captured> self | ssa.rb:81:1:88:3 | self | ssa.rb:85:10:85:22 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:93:5:93:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:95:5:95:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:99:5:99:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:101:5:101:10 | self |
| ssa.rb:90:9:90:10 | b1 | ssa.rb:90:9:90:10 | b1 | ssa.rb:92:7:92:8 | b1 |
| ssa.rb:90:13:90:14 | b2 | ssa.rb:90:13:90:14 | b2 | ssa.rb:94:10:94:11 | b2 |
| ssa.rb:90:17:90:18 | b3 | ssa.rb:90:17:90:18 | b3 | ssa.rb:98:7:98:8 | b3 |
| ssa.rb:90:21:90:22 | b4 | ssa.rb:90:21:90:22 | b4 | ssa.rb:100:10:100:11 | b4 |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:93:10:93:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:95:10:95:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:99:10:99:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:101:10:101:10 | x |
adjacentReads
| class_variables.rb:26:1:29:3 | self (N) | class_variables.rb:26:1:29:3 | self | class_variables.rb:27:3:27:11 | self | class_variables.rb:28:3:28:7 | self |
| instance_variables.rb:1:1:44:4 | self (instance_variables.rb) | instance_variables.rb:1:1:44:4 | self | instance_variables.rb:1:1:1:4 | self | instance_variables.rb:11:1:11:9 | self |
@@ -674,6 +716,14 @@ adjacentReads
| ssa.rb:38:1:42:3 | self (m4) | ssa.rb:38:1:42:3 | self | ssa.rb:39:8:39:9 | self | ssa.rb:41:3:41:13 | self |
| ssa.rb:66:11:70:5 | <captured> captured | ssa.rb:65:3:65:10 | captured | ssa.rb:68:10:68:17 | captured | ssa.rb:69:5:69:12 | captured |
| ssa.rb:66:11:70:5 | <captured> self | ssa.rb:64:1:72:3 | self | ssa.rb:67:5:67:10 | self | ssa.rb:68:5:68:17 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:93:5:93:10 | self | ssa.rb:99:5:99:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:93:5:93:10 | self | ssa.rb:101:5:101:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:95:5:95:10 | self | ssa.rb:99:5:99:10 | self |
| ssa.rb:90:1:103:3 | self (m12) | ssa.rb:90:1:103:3 | self | ssa.rb:95:5:95:10 | self | ssa.rb:101:5:101:10 | self |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:93:10:93:10 | x | ssa.rb:99:10:99:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:93:10:93:10 | x | ssa.rb:101:10:101:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:95:10:95:10 | x | ssa.rb:99:10:99:10 | x |
| ssa.rb:91:3:91:7 | ... = ... | ssa.rb:91:3:91:3 | x | ssa.rb:95:10:95:10 | x | ssa.rb:101:10:101:10 | x |
phi
| parameters.rb:37:3:37:18 | phi | parameters.rb:35:16:35:16 | b | parameters.rb:35:1:38:3 | <uninitialized> |
| parameters.rb:37:3:37:18 | phi | parameters.rb:35:16:35:16 | b | parameters.rb:35:16:35:20 | ... = ... |
@@ -689,3 +739,30 @@ phi
| ssa.rb:45:3:45:12 | phi | ssa.rb:45:3:45:3 | x | ssa.rb:45:3:45:7 | ... = ... |
| ssa.rb:50:3:50:8 | phi | ssa.rb:49:14:49:14 | y | ssa.rb:49:1:51:3 | <uninitialized> |
| ssa.rb:50:3:50:8 | phi | ssa.rb:49:14:49:14 | y | ssa.rb:49:14:49:19 | ... = ... |
phiReadNode
| parameters.rb:26:3:26:11 | SSA phi read(name) | parameters.rb:25:15:25:18 | name |
| ssa.rb:5:3:13:5 | SSA phi read(self) | ssa.rb:1:1:16:3 | self |
| ssa.rb:19:9:19:9 | SSA phi read(self) | ssa.rb:18:1:23:3 | self |
| ssa.rb:92:3:96:5 | SSA phi read(self) | ssa.rb:90:1:103:3 | self |
| ssa.rb:92:3:96:5 | SSA phi read(x) | ssa.rb:91:3:91:3 | x |
| ssa.rb:94:3:95:10 | SSA phi read(self) | ssa.rb:90:1:103:3 | self |
| ssa.rb:94:3:95:10 | SSA phi read(x) | ssa.rb:91:3:91:3 | x |
phiReadNodeRead
| parameters.rb:26:3:26:11 | SSA phi read(name) | parameters.rb:25:15:25:18 | name | parameters.rb:26:8:26:11 | name |
| ssa.rb:5:3:13:5 | SSA phi read(self) | ssa.rb:1:1:16:3 | self | ssa.rb:15:3:15:8 | self |
| ssa.rb:19:9:19:9 | SSA phi read(self) | ssa.rb:18:1:23:3 | self | ssa.rb:20:5:20:10 | self |
| ssa.rb:92:3:96:5 | SSA phi read(self) | ssa.rb:90:1:103:3 | self | ssa.rb:99:5:99:10 | self |
| ssa.rb:92:3:96:5 | SSA phi read(self) | ssa.rb:90:1:103:3 | self | ssa.rb:101:5:101:10 | self |
| ssa.rb:92:3:96:5 | SSA phi read(x) | ssa.rb:91:3:91:3 | x | ssa.rb:99:10:99:10 | x |
| ssa.rb:92:3:96:5 | SSA phi read(x) | ssa.rb:91:3:91:3 | x | ssa.rb:101:10:101:10 | x |
phiReadInput
| parameters.rb:26:3:26:11 | SSA phi read(name) | parameters.rb:25:15:25:18 | name |
| ssa.rb:5:3:13:5 | SSA phi read(self) | ssa.rb:1:1:16:3 | self (m) |
| ssa.rb:19:9:19:9 | SSA phi read(self) | ssa.rb:18:1:23:3 | self (m1) |
| ssa.rb:19:9:19:9 | SSA phi read(self) | ssa.rb:19:9:19:9 | SSA phi read(self) |
| ssa.rb:92:3:96:5 | SSA phi read(self) | ssa.rb:90:1:103:3 | self (m12) |
| ssa.rb:92:3:96:5 | SSA phi read(self) | ssa.rb:94:3:95:10 | SSA phi read(self) |
| ssa.rb:92:3:96:5 | SSA phi read(x) | ssa.rb:91:3:91:7 | ... = ... |
| ssa.rb:92:3:96:5 | SSA phi read(x) | ssa.rb:94:3:95:10 | SSA phi read(x) |
| ssa.rb:94:3:95:10 | SSA phi read(self) | ssa.rb:90:1:103:3 | self (m12) |
| ssa.rb:94:3:95:10 | SSA phi read(x) | ssa.rb:91:3:91:7 | ... = ... |

16
ruby/ql/test/library-tests/variables/ssa.ql
View File

@@ -1,6 +1,8 @@
import codeql.ruby.AST
import codeql.ruby.CFG
import codeql.ruby.dataflow.SSA
import codeql.ruby.dataflow.internal.SsaImpl
import ExposedForTestingOnly
query predicate definition(Ssa::Definition def, Variable v) { def.getSourceVariable() = v }
@@ -24,3 +26,17 @@ query predicate adjacentReads(Ssa::Definition def, Variable v, CfgNode read1, Cf
query predicate phi(Ssa::PhiNode phi, Variable v, Ssa::Definition input) {
phi.getSourceVariable() = v and input = phi.getAnInput()
}
query predicate phiReadNode(PhiReadNode phi, Variable v) { phi.getSourceVariable() = v }
query predicate phiReadNodeRead(PhiReadNode phi, Variable v, CfgNode read) {
phi.getSourceVariable() = v and
exists(BasicBlock bb, int i |
ssaDefReachesReadExt(v, phi, bb, i) and
read = bb.getNode(i)
)
}
query predicate phiReadInput(PhiReadNode phi, DefinitionExt inp) {
phiHasInputFromBlockExt(phi, inp, _)
}

15
ruby/ql/test/library-tests/variables/ssa.rb
View File

@@ -85,4 +85,19 @@ def m11
puts captured
end
end
end
def m12(b1, b2, b3, b4)
x = 0
if (b1) then
puts x
elsif (b2) then
puts x
end
# phi read for x
if (b3) then
puts x
elsif (b4) then
puts x
end
end

34
ruby/ql/test/library-tests/variables/varaccess.expected
View File

@@ -279,6 +279,23 @@ variableAccess
| ssa.rb:84:6:86:8 | self | ssa.rb:81:1:88:3 | self | ssa.rb:81:1:88:3 | m11 |
| ssa.rb:85:10:85:22 | self | ssa.rb:81:1:88:3 | self | ssa.rb:81:1:88:3 | m11 |
| ssa.rb:85:15:85:22 | captured | ssa.rb:82:3:82:10 | captured | ssa.rb:81:1:88:3 | m11 |
| ssa.rb:90:9:90:10 | b1 | ssa.rb:90:9:90:10 | b1 | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:90:13:90:14 | b2 | ssa.rb:90:13:90:14 | b2 | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:90:17:90:18 | b3 | ssa.rb:90:17:90:18 | b3 | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:90:21:90:22 | b4 | ssa.rb:90:21:90:22 | b4 | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:91:3:91:3 | x | ssa.rb:91:3:91:3 | x | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:92:7:92:8 | b1 | ssa.rb:90:9:90:10 | b1 | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:93:5:93:10 | self | ssa.rb:90:1:103:3 | self | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:93:10:93:10 | x | ssa.rb:91:3:91:3 | x | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:94:10:94:11 | b2 | ssa.rb:90:13:90:14 | b2 | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:95:5:95:10 | self | ssa.rb:90:1:103:3 | self | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:95:10:95:10 | x | ssa.rb:91:3:91:3 | x | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:98:7:98:8 | b3 | ssa.rb:90:17:90:18 | b3 | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:99:5:99:10 | self | ssa.rb:90:1:103:3 | self | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:99:10:99:10 | x | ssa.rb:91:3:91:3 | x | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:100:10:100:11 | b4 | ssa.rb:90:21:90:22 | b4 | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:101:5:101:10 | self | ssa.rb:90:1:103:3 | self | ssa.rb:90:1:103:3 | m12 |
| ssa.rb:101:10:101:10 | x | ssa.rb:91:3:91:3 | x | ssa.rb:90:1:103:3 | m12 |
explicitWrite
| class_variables.rb:1:1:1:3 | @@x | class_variables.rb:1:1:1:8 | ... = ... |
| class_variables.rb:19:3:19:5 | @@x | class_variables.rb:19:3:19:10 | ... = ... |
@@ -349,6 +366,7 @@ explicitWrite
| ssa.rb:69:5:69:12 | captured | ssa.rb:69:5:69:17 | ... = ... |
| ssa.rb:75:3:75:10 | captured | ssa.rb:75:3:75:14 | ... = ... |
| ssa.rb:82:3:82:10 | captured | ssa.rb:82:3:82:14 | ... = ... |
| ssa.rb:91:3:91:3 | x | ssa.rb:91:3:91:7 | ... = ... |
implicitWrite
| nested_scopes.rb:15:23:15:23 | a |
| nested_scopes.rb:16:26:16:26 | x |
@@ -390,6 +408,10 @@ implicitWrite
| ssa.rb:53:8:53:10 | foo |
| ssa.rb:64:8:64:8 | a |
| ssa.rb:66:15:66:15 | a |
| ssa.rb:90:9:90:10 | b1 |
| ssa.rb:90:13:90:14 | b2 |
| ssa.rb:90:17:90:18 | b3 |
| ssa.rb:90:21:90:22 | b4 |
readAccess
| class_variables.rb:3:1:3:5 | self |
| class_variables.rb:3:3:3:5 | @@x |
@@ -582,3 +604,15 @@ readAccess
| ssa.rb:84:6:86:8 | self |
| ssa.rb:85:10:85:22 | self |
| ssa.rb:85:15:85:22 | captured |
| ssa.rb:92:7:92:8 | b1 |
| ssa.rb:93:5:93:10 | self |
| ssa.rb:93:10:93:10 | x |
| ssa.rb:94:10:94:11 | b2 |
| ssa.rb:95:5:95:10 | self |
| ssa.rb:95:10:95:10 | x |
| ssa.rb:98:7:98:8 | b3 |
| ssa.rb:99:5:99:10 | self |
| ssa.rb:99:10:99:10 | x |
| ssa.rb:100:10:100:11 | b4 |
| ssa.rb:101:5:101:10 | self |
| ssa.rb:101:10:101:10 | x |

8
ruby/ql/test/library-tests/variables/variable.expected
View File

@@ -120,7 +120,7 @@
| scopes.rb:43:2:43:4 | foo |
| scopes.rb:46:5:46:8 | var2 |
| ssa.rb:1:1:16:3 | self |
| ssa.rb:1:1:88:3 | self |
| ssa.rb:1:1:103:3 | self |
| ssa.rb:1:7:1:7 | b |
| ssa.rb:2:3:2:3 | i |
| ssa.rb:18:1:23:3 | self |
@@ -152,3 +152,9 @@
| ssa.rb:75:3:75:10 | captured |
| ssa.rb:81:1:88:3 | self |
| ssa.rb:82:3:82:10 | captured |
| ssa.rb:90:1:103:3 | self |
| ssa.rb:90:9:90:10 | b1 |
| ssa.rb:90:13:90:14 | b2 |
| ssa.rb:90:17:90:18 | b3 |
| ssa.rb:90:21:90:22 | b4 |
| ssa.rb:91:3:91:3 | x |

3
ruby/ql/test/library-tests/variables/varscopes.expected
View File

@@ -57,7 +57,7 @@
| scopes.rb:37:1:39:3 | foo |
| scopes.rb:41:1:49:3 | M |
| ssa.rb:1:1:16:3 | m |
| ssa.rb:1:1:88:3 | ssa.rb |
| ssa.rb:1:1:103:3 | ssa.rb |
| ssa.rb:18:1:23:3 | m1 |
| ssa.rb:25:1:30:3 | m2 |
| ssa.rb:26:3:28:5 | { ... } |
@@ -75,3 +75,4 @@
| ssa.rb:81:1:88:3 | m11 |
| ssa.rb:83:7:87:5 | do ... end |
| ssa.rb:84:10:86:8 | do ... end |
| ssa.rb:90:1:103:3 | m12 |

591
shared/ssa/codeql/ssa/Ssa.qll
View File

@@ -264,8 +264,22 @@ module Make<InputSig Input> {
)
}
/**
* Holds if `bb` is in the dominance frontier of a block containing a
* read of `v`.
*/
pragma[nomagic]
private predicate inReadDominanceFrontier(BasicBlock bb, SourceVariable v) {
exists(BasicBlock readbb | inDominanceFrontier(readbb, bb) |
lastRefIsRead(readbb, v)
or
exists(TPhiReadNode(v, readbb)) and
not ref(readbb, _, v, _)
)
}
cached
newtype TDefinition =
private newtype TDefinitionExt =
TWriteDef(SourceVariable v, BasicBlock bb, int i) {
variableWrite(bb, i, v, _) and
liveAfterWrite(bb, i, v)
@@ -273,8 +287,16 @@ module Make<InputSig Input> {
TPhiNode(SourceVariable v, BasicBlock bb) {
inDefDominanceFrontier(bb, v) and
liveAtEntry(bb, v)
} or
TPhiReadNode(SourceVariable v, BasicBlock bb) {
inReadDominanceFrontier(bb, v) and
liveAtEntry(bb, v) and
// no need to create a phi-read if there is already a normal phi
not any(PhiNode def).definesAt(v, bb, _)
}
private class TDefinition = TWriteDef or TPhiNode;
private module SsaDefReaches {
newtype TSsaRefKind =
SsaActualRead() or
@@ -283,6 +305,10 @@ module Make<InputSig Input> {
class SsaRead = SsaActualRead or SsaPhiRead;
class SsaDefExt = SsaDef or SsaPhiRead;
SsaDefExt ssaDefExt() { any() }
/**
* A classification of SSA variable references into reads and definitions.
*/
@@ -307,98 +333,27 @@ module Make<InputSig Input> {
}
}
/**
* Holds if `bb` is in the dominance frontier of a block containing a
* read of `v`.
*/
pragma[nomagic]
private predicate inReadDominanceFrontier(BasicBlock bb, SourceVariable v) {
exists(BasicBlock readbb | inDominanceFrontier(readbb, bb) |
lastRefIsRead(readbb, v)
or
phiRead(readbb, v)
)
}
/**
* Holds if a phi-read node should be inserted for variable `v` at the beginning
* of basic block `bb`.
*
* Phi-read nodes are like normal phi nodes, but they are inserted based on reads
* instead of writes, and only if the dominance-frontier block does not already
* contain a reference (read or write) to `v`. Unlike normal phi nodes, this is
* an internal implementation detail that is not exposed.
*
* The motivation for adding phi-reads is to improve performance of the use-use
* calculation in cases where there is a large number of reads that can reach the
* same join-point, and from there reach a large number of basic blocks. Example:
*
* ```cs
* if (a)
* use(x);
* else if (b)
* use(x);
* else if (c)
* use(x);
* else if (d)
* use(x);
* // many more ifs ...
*
* // phi-read for `x` inserted here
*
* // program not mentioning `x`, with large basic block graph
*
* use(x);
* ```
*
* Without phi-reads, the analysis has to replicate reachability for each of
* the guarded uses of `x`. However, with phi-reads, the analysis will limit
* each conditional use of `x` to reach the basic block containing the phi-read
* node for `x`, and only that basic block will have to compute reachability
* through the remainder of the large program.
*
* Like normal reads, each phi-read node `phi-read` can be reached from exactly
* one SSA definition (without passing through another definition): Assume, for
* the sake of contradiction, that there are two reaching definitions `def1` and
* `def2`. Now, if both `def1` and `def2` dominate `phi-read`, then the nearest
* dominating definition will prevent the other from reaching `phi-read`. So, at
* least one of `def1` and `def2` cannot dominate `phi-read`; assume it is `def1`.
* Then `def1` must go through one of its dominance-frontier blocks in order to
* reach `phi-read`. However, such a block will always start with a (normal) phi
* node, which contradicts reachability.
*
* Also, like normal reads, the unique SSA definition `def` that reaches `phi-read`,
* will dominate `phi-read`. Assuming it doesn't means that the path from `def`
* to `phi-read` goes through a dominance-frontier block, and hence a phi node,
* which contradicts reachability.
*/
pragma[nomagic]
predicate phiRead(BasicBlock bb, SourceVariable v) {
inReadDominanceFrontier(bb, v) and
liveAtEntry(bb, v) and
// only if there are no other references to `v` inside `bb`
not ref(bb, _, v, _) and
not exists(Definition def | def.definesAt(v, bb, _))
}
/**
* Holds if the `i`th node of basic block `bb` is a reference to `v`,
* either a read (when `k` is `SsaRead()`) or an SSA definition (when `k`
* is `SsaDef()`).
* either a read (when `k` is `SsaActualRead()`), an SSA definition (when `k`
* is `SsaDef()`), or a phi-read (when `k` is `SsaPhiRead()`).
*
* Unlike `Liveness::ref`, this includes `phi` nodes.
* Unlike `Liveness::ref`, this includes `phi` (read) nodes.
*/
pragma[nomagic]
predicate ssaRef(BasicBlock bb, int i, SourceVariable v, SsaRefKind k) {
variableRead(bb, i, v, _) and
k = SsaActualRead()
or
phiRead(bb, v) and
i = -1 and
k = SsaPhiRead()
or
any(Definition def).definesAt(v, bb, i) and
k = SsaDef()
any(DefinitionExt def).definesAt(v, bb, i, k)
}
/**
* Holds if the `i`th node of basic block `bb` is a reference to `v`, and
* this reference is not a phi-read.
*/
predicate ssaRefNonPhiRead(BasicBlock bb, int i, SourceVariable v) {
ssaRef(bb, i, v, [SsaActualRead().(TSsaRefKind), SsaDef()])
}
private newtype OrderedSsaRefIndex =
@@ -445,37 +400,36 @@ module Make<InputSig Input> {
* Holds if the SSA definition `def` reaches rank index `rnk` in its own
* basic block `bb`.
*/
predicate ssaDefReachesRank(BasicBlock bb, Definition def, int rnk, SourceVariable v) {
predicate ssaDefReachesRank(BasicBlock bb, DefinitionExt def, int rnk, SourceVariable v) {
exists(int i |
rnk = ssaRefRank(bb, i, v, SsaDef()) and
def.definesAt(v, bb, i)
rnk = ssaRefRank(bb, i, v, ssaDefExt()) and
def.definesAt(v, bb, i, _)
)
or
ssaDefReachesRank(bb, def, rnk - 1, v) and
rnk = ssaRefRank(bb, _, v, any(SsaRead k))
rnk = ssaRefRank(bb, _, v, SsaActualRead())
}
/**
* Holds if the SSA definition of `v` at `def` reaches index `i` in the same
* basic block `bb`, without crossing another SSA definition of `v`.
*/
predicate ssaDefReachesReadWithinBlock(SourceVariable v, Definition def, BasicBlock bb, int i) {
predicate ssaDefReachesReadWithinBlock(SourceVariable v, DefinitionExt def, BasicBlock bb, int i) {
exists(int rnk |
ssaDefReachesRank(bb, def, rnk, v) and
rnk = ssaRefRank(bb, i, v, any(SsaRead k))
rnk = ssaRefRank(bb, i, v, SsaActualRead())
)
}
/**
* Same as `ssaRefRank()`, but restricted to a particular SSA definition `def`.
*/
int ssaDefRank(Definition def, SourceVariable v, BasicBlock bb, int i, SsaRefKind k) {
v = def.getSourceVariable() and
int ssaDefRank(DefinitionExt def, SourceVariable v, BasicBlock bb, int i, SsaRefKind k) {
result = ssaRefRank(bb, i, v, k) and
(
ssaDefReachesRead(_, def, bb, i)
ssaDefReachesReadExt(v, def, bb, i)
or
def.definesAt(_, bb, i)
def.definesAt(v, bb, i, k)
)
}
@@ -484,18 +438,38 @@ module Make<InputSig Input> {
* last reference to `v` inside `bb`.
*/
pragma[noinline]
predicate lastSsaRef(Definition def, SourceVariable v, BasicBlock bb, int i) {
predicate lastSsaRefExt(DefinitionExt def, SourceVariable v, BasicBlock bb, int i) {
ssaDefRank(def, v, bb, i, _) = maxSsaRefRank(bb, v)
}
predicate defOccursInBlock(Definition def, BasicBlock bb, SourceVariable v, SsaRefKind k) {
/** Gets a phi-read node into which `inp` is an input, if any. */
pragma[nomagic]
private DefinitionExt getAPhiReadOutput(DefinitionExt inp) {
phiHasInputFromBlockExt(result.(PhiReadNode), inp, _)
}
pragma[nomagic]
DefinitionExt getAnUltimateOutput(Definition def) { result = getAPhiReadOutput*(def) }
/**
* Same as `lastSsaRefExt`, but ignores phi-reads.
*/
pragma[noinline]
predicate lastSsaRef(Definition def, SourceVariable v, BasicBlock bb, int i) {
lastSsaRefExt(getAnUltimateOutput(def), v, bb, i) and
ssaRefNonPhiRead(bb, i, v)
}
predicate defOccursInBlock(DefinitionExt def, BasicBlock bb, SourceVariable v, SsaRefKind k) {
exists(ssaDefRank(def, v, bb, _, k))
}
pragma[noinline]
private predicate ssaDefReachesThroughBlock(Definition def, BasicBlock bb) {
ssaDefReachesEndOfBlock(bb, def, _) and
not defOccursInBlock(_, bb, def.getSourceVariable(), _)
private predicate ssaDefReachesThroughBlock(DefinitionExt def, BasicBlock bb) {
exists(SourceVariable v |
ssaDefReachesEndOfBlockExt(bb, def, v) and
not defOccursInBlock(_, bb, v, _)
)
}
/**
@@ -503,85 +477,114 @@ module Make<InputSig Input> {
* `bb2` is a transitive successor of `bb1`, `def` is live at the end of _some_
* predecessor of `bb2`, and the underlying variable for `def` is neither read
* nor written in any block on the path between `bb1` and `bb2`.
*
* Phi reads are considered as normal reads for this predicate.
*/
pragma[nomagic]
private predicate varBlockReachesInclPhiRead(Definition def, BasicBlock bb1, BasicBlock bb2) {
defOccursInBlock(def, bb1, _, _) and
predicate varBlockReachesExt(DefinitionExt def, SourceVariable v, BasicBlock bb1, BasicBlock bb2) {
defOccursInBlock(def, bb1, v, _) and
bb2 = getABasicBlockSuccessor(bb1)
or
exists(BasicBlock mid |
varBlockReachesInclPhiRead(def, bb1, mid) and
varBlockReachesExt(def, v, bb1, mid) and
ssaDefReachesThroughBlock(def, mid) and
bb2 = getABasicBlockSuccessor(mid)
)
}
pragma[nomagic]
private predicate phiReadStep(Definition def, SourceVariable v, BasicBlock bb1, BasicBlock bb2) {
varBlockReachesInclPhiRead(def, bb1, bb2) and
defOccursInBlock(def, bb2, v, SsaPhiRead())
private predicate phiReadStep(DefinitionExt def, PhiReadNode phi, BasicBlock bb1, BasicBlock bb2) {
exists(SourceVariable v |
varBlockReachesExt(pragma[only_bind_into](def), v, bb1, pragma[only_bind_into](bb2)) and
phi.definesAt(v, bb2, _, _) and
not ref(bb2, _, v, _)
)
}
pragma[nomagic]
private predicate varBlockReachesExclPhiRead(Definition def, BasicBlock bb1, BasicBlock bb2) {
varBlockReachesInclPhiRead(pragma[only_bind_into](def), bb1, pragma[only_bind_into](bb2)) and
ssaRef(bb2, _, def.getSourceVariable(), [SsaActualRead().(TSsaRefKind), SsaDef()])
private predicate varBlockReachesExclPhiRead(
DefinitionExt def, SourceVariable v, BasicBlock bb1, BasicBlock bb2
) {
varBlockReachesExt(def, v, bb1, bb2) and
ssaRefNonPhiRead(bb2, _, v)
or
exists(BasicBlock mid |
varBlockReachesExclPhiRead(def, mid, bb2) and
phiReadStep(def, _, bb1, mid)
exists(PhiReadNode phi, BasicBlock mid |
varBlockReachesExclPhiRead(phi, v, mid, bb2) and
phiReadStep(def, phi, bb1, mid)
)
}
/**
* Holds if `def` is accessed in basic block `bb1` (either a read or a write),
* the underlying variable `v` of `def` is accessed in basic block `bb2`
* (either a read or a write), `bb2` is a transitive successor of `bb1`, and
* `v` is neither read nor written in any block on the path between `bb1`
* and `bb2`.
* Same as `varBlockReachesExt`, but ignores phi-reads, and furthermore
* `bb2` is restricted to blocks in which the underlying variable `v` of
* `def` is referenced (either a read or a write).
*/
pragma[nomagic]
predicate varBlockReaches(Definition def, BasicBlock bb1, BasicBlock bb2) {
varBlockReachesExclPhiRead(def, bb1, bb2) and
not defOccursInBlock(def, bb1, _, SsaPhiRead())
predicate varBlockReachesRef(Definition def, SourceVariable v, BasicBlock bb1, BasicBlock bb2) {
varBlockReachesExclPhiRead(getAnUltimateOutput(def), v, bb1, bb2) and
ssaRefNonPhiRead(bb1, _, v)
}
pragma[nomagic]
predicate defAdjacentReadExt(DefinitionExt def, BasicBlock bb1, BasicBlock bb2, int i2) {
exists(SourceVariable v |
varBlockReachesExt(def, v, bb1, bb2) and
ssaRefRank(bb2, i2, v, SsaActualRead()) = 1
)
}
pragma[nomagic]
predicate defAdjacentRead(Definition def, BasicBlock bb1, BasicBlock bb2, int i2) {
varBlockReaches(def, bb1, bb2) and
ssaRefRank(bb2, i2, def.getSourceVariable(), SsaActualRead()) = 1
exists(SourceVariable v | varBlockReachesRef(def, v, bb1, bb2) |
ssaRefRank(bb2, i2, v, SsaActualRead()) = 1
or
ssaRefRank(bb2, _, v, SsaPhiRead()) = 1 and
ssaRefRank(bb2, i2, v, SsaActualRead()) = 2
)
}
/**
* Holds if `def` is accessed in basic block `bb` (either a read or a write),
* `bb1` can reach a transitive successor `bb2` where `def` is no longer live,
* `bb` can reach a transitive successor `bb2` where `def` is no longer live,
* and `v` is neither read nor written in any block on the path between `bb`
* and `bb2`.
*/
pragma[nomagic]
predicate varBlockReachesExit(Definition def, BasicBlock bb) {
exists(BasicBlock bb2 | varBlockReachesInclPhiRead(def, bb, bb2) |
predicate varBlockReachesExitExt(DefinitionExt def, BasicBlock bb) {
exists(BasicBlock bb2 | varBlockReachesExt(def, _, bb, bb2) |
not defOccursInBlock(def, bb2, _, _) and
not ssaDefReachesEndOfBlock(bb2, def, _)
)
or
exists(BasicBlock mid |
varBlockReachesExit(def, mid) and
phiReadStep(def, _, bb, mid)
not ssaDefReachesEndOfBlockExt(bb2, def, _)
)
}
}
predicate phiReadExposedForTesting = phiRead/2;
pragma[nomagic]
private predicate varBlockReachesExitExclPhiRead(DefinitionExt def, BasicBlock bb) {
exists(BasicBlock bb2, SourceVariable v |
varBlockReachesExt(def, v, bb, bb2) and
not defOccursInBlock(def, bb2, _, _) and
not ssaDefReachesEndOfBlockExt(bb2, def, _) and
not any(PhiReadNode phi).definesAt(v, bb2, _, _)
)
or
exists(PhiReadNode phi, BasicBlock bb2 |
varBlockReachesExitExclPhiRead(phi, bb2) and
phiReadStep(def, phi, bb, bb2)
)
}
/**
* Same as `varBlockReachesExitExt`, but ignores phi-reads.
*/
pragma[nomagic]
predicate varBlockReachesExit(Definition def, BasicBlock bb) {
varBlockReachesExitExclPhiRead(getAnUltimateOutput(def), bb)
}
}
private import SsaDefReaches
pragma[nomagic]
private predicate liveThrough(BasicBlock bb, SourceVariable v) {
private predicate liveThroughExt(BasicBlock bb, SourceVariable v) {
liveAtExit(bb, v) and
not ssaRef(bb, _, v, SsaDef())
not ssaRef(bb, _, v, ssaDefExt())
}
/**
@@ -592,7 +595,7 @@ module Make<InputSig Input> {
* SSA definition of `v`.
*/
pragma[nomagic]
predicate ssaDefReachesEndOfBlock(BasicBlock bb, Definition def, SourceVariable v) {
predicate ssaDefReachesEndOfBlockExt(BasicBlock bb, DefinitionExt def, SourceVariable v) {
exists(int last |
last = maxSsaRefRank(pragma[only_bind_into](bb), pragma[only_bind_into](v)) and
ssaDefReachesRank(bb, def, last, v) and
@@ -605,8 +608,31 @@ module Make<InputSig Input> {
// the node. If two definitions dominate a node then one must dominate the
// other, so therefore the definition of _closest_ is given by the dominator
// tree. Thus, reaching definitions can be calculated in terms of dominance.
ssaDefReachesEndOfBlock(getImmediateBasicBlockDominator(bb), def, pragma[only_bind_into](v)) and
liveThrough(bb, pragma[only_bind_into](v))
ssaDefReachesEndOfBlockExt(getImmediateBasicBlockDominator(bb), def, pragma[only_bind_into](v)) and
liveThroughExt(bb, pragma[only_bind_into](v))
}
pragma[nomagic]
private predicate phiReadReachesEndOfBlock(BasicBlock pred, BasicBlock bb, SourceVariable v) {
exists(PhiReadNode phi |
ssaDefReachesEndOfBlockExt(bb, phi, v) and
pred = getImmediateBasicBlockDominator(phi.getBasicBlock())
)
}
/**
* NB: If this predicate is exposed, it should be cached.
*
* Same as `ssaDefReachesEndOfBlockExt`, but ignores phi-reads.
*/
pragma[nomagic]
predicate ssaDefReachesEndOfBlock(BasicBlock bb, Definition def, SourceVariable v) {
ssaDefReachesEndOfBlockExt(bb, def, v)
or
exists(BasicBlock mid |
ssaDefReachesEndOfBlock(mid, def, v) and
phiReadReachesEndOfBlock(mid, bb, v)
)
}
/**
@@ -623,20 +649,50 @@ module Make<InputSig Input> {
)
}
/**
* NB: If this predicate is exposed, it should be cached.
*
* Holds if `inp` is an input to the phi (read) node `phi` along the edge originating in `bb`.
*/
pragma[nomagic]
predicate phiHasInputFromBlockExt(DefinitionExt phi, DefinitionExt inp, BasicBlock bb) {
exists(SourceVariable v, BasicBlock bbDef |
phi.definesAt(v, bbDef, _, _) and
getABasicBlockPredecessor(bbDef) = bb and
ssaDefReachesEndOfBlockExt(bb, inp, v)
|
phi instanceof PhiNode or
phi instanceof PhiReadNode
)
}
/**
* NB: If this predicate is exposed, it should be cached.
*
* Holds if the SSA definition of `v` at `def` reaches a read at index `i` in
* basic block `bb`, without crossing another SSA definition of `v`. The read
* is of kind `rk`.
* basic block `bb`, without crossing another SSA definition of `v`.
*/
pragma[nomagic]
predicate ssaDefReachesReadExt(SourceVariable v, DefinitionExt def, BasicBlock bb, int i) {
ssaDefReachesReadWithinBlock(v, def, bb, i)
or
ssaRef(bb, i, v, SsaActualRead()) and
ssaDefReachesEndOfBlockExt(getABasicBlockPredecessor(bb), def, v) and
not ssaDefReachesReadWithinBlock(v, _, bb, i)
}
/**
* NB: If this predicate is exposed, it should be cached.
*
* Same as `ssaDefReachesReadExt`, but ignores phi-reads.
*/
pragma[nomagic]
predicate ssaDefReachesRead(SourceVariable v, Definition def, BasicBlock bb, int i) {
ssaDefReachesReadWithinBlock(v, def, bb, i)
or
ssaRef(bb, i, v, any(SsaRead k)) and
ssaRef(bb, i, v, SsaActualRead()) and
ssaDefReachesEndOfBlock(getABasicBlockPredecessor(bb), def, v) and
not ssaDefReachesReadWithinBlock(v, _, bb, i)
not exists(Definition other | ssaDefReachesReadWithinBlock(v, other, bb, i))
}
/**
@@ -647,14 +703,32 @@ module Make<InputSig Input> {
* path between them without any read of `def`.
*/
pragma[nomagic]
predicate adjacentDefRead(Definition def, BasicBlock bb1, int i1, BasicBlock bb2, int i2) {
predicate adjacentDefReadExt(
DefinitionExt def, SourceVariable v, BasicBlock bb1, int i1, BasicBlock bb2, int i2
) {
exists(int rnk |
rnk = ssaDefRank(def, _, bb1, i1, _) and
rnk + 1 = ssaDefRank(def, _, bb1, i2, SsaActualRead()) and
variableRead(bb1, i2, _, _) and
rnk = ssaDefRank(def, v, bb1, i1, _) and
rnk + 1 = ssaDefRank(def, v, bb1, i2, SsaActualRead()) and
variableRead(bb1, i2, v, _) and
bb2 = bb1
)
or
lastSsaRefExt(def, v, bb1, i1) and
defAdjacentReadExt(def, bb1, bb2, i2)
}
/**
* NB: If this predicate is exposed, it should be cached.
*
* Same as `adjacentDefReadExt`, but ignores phi-reads.
*/
pragma[nomagic]
predicate adjacentDefRead(Definition def, BasicBlock bb1, int i1, BasicBlock bb2, int i2) {
exists(SourceVariable v |
adjacentDefReadExt(getAnUltimateOutput(def), v, bb1, i1, bb2, i2) and
ssaRefNonPhiRead(bb1, i1, v)
)
or
lastSsaRef(def, _, bb1, i1) and
defAdjacentRead(def, bb1, bb2, i2)
}
@@ -704,19 +778,41 @@ module Make<InputSig Input> {
* without passing through another read or write.
*/
pragma[nomagic]
predicate lastRefRedefExt(
DefinitionExt def, SourceVariable v, BasicBlock bb, int i, DefinitionExt next
) {
// Next reference to `v` inside `bb` is a write
exists(int rnk, int j |
rnk = ssaDefRank(def, v, bb, i, _) and
next.definesAt(v, bb, j, _) and
rnk + 1 = ssaRefRank(bb, j, v, ssaDefExt())
)
or
// Can reach a write using one or more steps
lastSsaRefExt(def, v, bb, i) and
exists(BasicBlock bb2 |
varBlockReachesExt(def, v, bb, bb2) and
1 = ssaDefRank(next, v, bb2, _, ssaDefExt())
)
}
/**
* NB: If this predicate is exposed, it should be cached.
*
* Same as `lastRefRedefExt`, but ignores phi-reads.
*/
pragma[nomagic]
predicate lastRefRedef(Definition def, BasicBlock bb, int i, Definition next) {
exists(SourceVariable v |
// Next reference to `v` inside `bb` is a write
exists(int rnk, int j |
rnk = ssaDefRank(def, v, bb, i, _) and
next.definesAt(v, bb, j) and
rnk + 1 = ssaRefRank(bb, j, v, SsaDef())
)
or
// Can reach a write using one or more steps
lastRefRedefExt(getAnUltimateOutput(def), v, bb, i, next) and
ssaRefNonPhiRead(bb, i, v)
)
or
// Can reach a write using one or more steps
exists(SourceVariable v |
lastSsaRef(def, v, bb, i) and
exists(BasicBlock bb2 |
varBlockReaches(def, bb, bb2) and
varBlockReachesRef(def, v, bb, bb2) and
1 = ssaDefRank(next, v, bb2, _, SsaDef())
)
)
@@ -770,6 +866,25 @@ module Make<InputSig Input> {
* another read.
*/
pragma[nomagic]
predicate lastRefExt(DefinitionExt def, BasicBlock bb, int i) {
// Can reach another definition
lastRefRedefExt(def, _, bb, i, _)
or
exists(SourceVariable v | lastSsaRefExt(def, v, bb, i) |
// Can reach exit directly
bb instanceof ExitBasicBlock
or
// Can reach a block using one or more steps, where `def` is no longer live
varBlockReachesExitExt(def, bb)
)
}
/**
* NB: If this predicate is exposed, it should be cached.
*
* Same as `lastRefExt`, but ignores phi-reads.
*/
pragma[nomagic]
predicate lastRef(Definition def, BasicBlock bb, int i) {
// Can reach another definition
lastRefRedef(def, bb, i, _)
@@ -819,7 +934,7 @@ module Make<InputSig Input> {
final BasicBlock getBasicBlock() { this.definesAt(_, result, _) }
/** Gets a textual representation of this SSA definition. */
string toString() { none() }
string toString() { result = "SSA def(" + this.getSourceVariable() + ")" }
}
/** An SSA definition that corresponds to a write. */
@@ -829,13 +944,11 @@ module Make<InputSig Input> {
private int i;
WriteDefinition() { this = TWriteDef(v, bb, i) }
override string toString() { result = "WriteDef" }
}
/** A phi node. */
class PhiNode extends Definition, TPhiNode {
override string toString() { result = "Phi" }
override string toString() { result = "SSA phi(" + this.getSourceVariable() + ")" }
}
/**
@@ -851,6 +964,120 @@ module Make<InputSig Input> {
}
}
/**
* An extended static single assignment (SSA) definition.
*
* This is either a normal SSA definition (`Definition`) or a
* phi-read node (`PhiReadNode`).
*/
class DefinitionExt extends TDefinitionExt {
/** Gets the source variable underlying this SSA definition. */
SourceVariable getSourceVariable() { this.definesAt(result, _, _, _) }
/**
* Holds if this SSA definition defines `v` at index `i` in basic block `bb`.
* Phi nodes are considered to be at index `-1`, while normal variable writes
* are at the index of the control flow node they wrap.
*/
final predicate definesAt(SourceVariable v, BasicBlock bb, int i, SsaRefKind kind) {
this.(Definition).definesAt(v, bb, i) and
kind = SsaDef()
or
this = TPhiReadNode(v, bb) and i = -1 and kind = SsaPhiRead()
}
/** Gets the basic block to which this SSA definition belongs. */
final BasicBlock getBasicBlock() { this.definesAt(_, result, _, _) }
/** Gets a textual representation of this SSA definition. */
string toString() { result = this.(Definition).toString() }
}
/**
* A phi-read node.
*
* Phi-read nodes are like normal phi nodes, but they are inserted based on reads
* instead of writes, and only if the dominance-frontier block does not already
* contain a normal phi node.
*
* The motivation for adding phi-reads is to improve performance of the use-use
* calculation in cases where there is a large number of reads that can reach the
* same join-point, and from there reach a large number of basic blocks. Example:
*
* ```cs
* if (a)
* use(x);
* else if (b)
* use(x);
* else if (c)
* use(x);
* else if (d)
* use(x);
* // many more ifs ...
*
* // phi-read for `x` inserted here
*
* // program not mentioning `x`, with large basic block graph
*
* use(x);
* ```
*
* Without phi-reads, the analysis has to replicate reachability for each of
* the guarded uses of `x`. However, with phi-reads, the analysis will limit
* each conditional use of `x` to reach the basic block containing the phi-read
* node for `x`, and only that basic block will have to compute reachability
* through the remainder of the large program.
*
* Another motivation for phi-reads is when a large number of reads can reach
* another large number of reads:
*
* ```cs
* if (a)
* use(x);
* else if (b)
* use(x);
* else if (c)
* use(x);
* else if (d)
* use(x);
* // many more ifs ...
*
* // phi-read for `x` inserted here
*
* if (a)
* use(x);
* else if (b)
* use(x);
* else if (c)
* use(x);
* else if (d)
* use(x);
* // many more ifs ...
* ```
*
* Without phi-reads, one needs to add `n*m` data-flow edges (assuming `n` reads
* before the phi-read and `m` reads after the phi-read), whereas if we include
* phi-reads in the data-flow graph, we only need to add `n+m` edges.
*
* Like normal reads, each phi-read node `phi-read` can be reached from exactly
* one SSA definition (without passing through another definition): Assume, for
* the sake of contradiction, that there are two reaching definitions `def1` and
* `def2`. Now, if both `def1` and `def2` dominate `phi-read`, then the nearest
* dominating definition will prevent the other from reaching `phi-read`. So, at
* least one of `def1` and `def2` cannot dominate `phi-read`; assume it is `def1`.
* Then `def1` must go through one of its dominance-frontier blocks in order to
* reach `phi-read`. However, such a block will always start with a (normal) phi
* node, which contradicts reachability.
*
* Also, like normal reads, the unique SSA definition `def` that reaches `phi-read`,
* will dominate `phi-read`. Assuming it doesn't means that the path from `def`
* to `phi-read` goes through a dominance-frontier block, and hence a phi node,
* which contradicts reachability.
*/
class PhiReadNode extends DefinitionExt, TPhiReadNode {
override string toString() { result = "SSA phi read(" + this.getSourceVariable() + ")" }
}
/** Provides a set of consistency queries. */
module Consistency {
/** A definition that is relevant for the consistency queries. */
@@ -861,18 +1088,40 @@ module Make<InputSig Input> {
);
}
/** A definition that is relevant for the consistency queries. */
abstract class RelevantDefinitionExt extends DefinitionExt {
/** Override this predicate to ensure locations in consistency results. */
abstract predicate hasLocationInfo(
string filepath, int startline, int startcolumn, int endline, int endcolumn
);
}
/** Holds if a read can be reached from multiple definitions. */
query predicate nonUniqueDef(RelevantDefinition def, SourceVariable v, BasicBlock bb, int i) {
ssaDefReachesRead(v, def, bb, i) and
not exists(unique(Definition def0 | ssaDefReachesRead(v, def0, bb, i)))
}
/** Holds if a read can be reached from multiple definitions. */
query predicate nonUniqueDefExt(
RelevantDefinitionExt def, SourceVariable v, BasicBlock bb, int i
) {
ssaDefReachesReadExt(v, def, bb, i) and
not exists(unique(DefinitionExt def0 | ssaDefReachesReadExt(v, def0, bb, i)))
}
/** Holds if a read cannot be reached from a definition. */
query predicate readWithoutDef(SourceVariable v, BasicBlock bb, int i) {
variableRead(bb, i, v, _) and
not ssaDefReachesRead(v, _, bb, i)
}
/** Holds if a read cannot be reached from a definition. */
query predicate readWithoutDefExt(SourceVariable v, BasicBlock bb, int i) {
variableRead(bb, i, v, _) and
not ssaDefReachesReadExt(v, _, bb, i)
}
/** Holds if a definition cannot reach a read. */
query predicate deadDef(RelevantDefinition def, SourceVariable v) {
v = def.getSourceVariable() and
@@ -881,6 +1130,14 @@ module Make<InputSig Input> {
not uncertainWriteDefinitionInput(_, def)
}
/** Holds if a definition cannot reach a read. */
query predicate deadDefExt(RelevantDefinitionExt def, SourceVariable v) {
v = def.getSourceVariable() and
not ssaDefReachesReadExt(_, def, _, _) and
not phiHasInputFromBlockExt(_, def, _) and
not uncertainWriteDefinitionInput(_, def)
}
/** Holds if a read is not dominated by a definition. */
query predicate notDominatedByDef(RelevantDefinition def, SourceVariable v, BasicBlock bb, int i) {
exists(BasicBlock bbDef, int iDef | def.definesAt(v, bbDef, iDef) |
@@ -892,5 +1149,19 @@ module Make<InputSig Input> {
not def.definesAt(v, getImmediateBasicBlockDominator*(bb), _)
)
}
/** Holds if a read is not dominated by a definition. */
query predicate notDominatedByDefExt(
RelevantDefinitionExt def, SourceVariable v, BasicBlock bb, int i
) {
exists(BasicBlock bbDef, int iDef | def.definesAt(v, bbDef, iDef, _) |
ssaDefReachesReadWithinBlock(v, def, bb, i) and
(bb != bbDef or i < iDef)
or
ssaDefReachesReadExt(v, def, bb, i) and
not ssaDefReachesReadWithinBlock(v, def, bb, i) and
not def.definesAt(v, getImmediateBasicBlockDominator*(bb), _, _)
)
}
}
}

298
swift/ql/test/library-tests/dataflow/dataflow/LocalFlow.expected
View File

@@ -1,199 +1,199 @@
| test.swift:6:9:6:13 | WriteDef | test.swift:7:15:7:15 | t1 |
| test.swift:6:19:6:26 | call to source() | test.swift:6:9:6:13 | WriteDef |
| test.swift:6:9:6:13 | SSA def(t1) | test.swift:7:15:7:15 | t1 |
| test.swift:6:19:6:26 | call to source() | test.swift:6:9:6:13 | SSA def(t1) |
| test.swift:7:15:7:15 | t1 | test.swift:8:10:8:10 | t1 |
| test.swift:8:5:8:10 | WriteDef | test.swift:10:15:10:15 | t2 |
| test.swift:8:10:8:10 | t1 | test.swift:8:5:8:10 | WriteDef |
| test.swift:8:5:8:10 | SSA def(t2) | test.swift:10:15:10:15 | t2 |
| test.swift:8:10:8:10 | t1 | test.swift:8:5:8:10 | SSA def(t2) |
| test.swift:8:10:8:10 | t1 | test.swift:9:15:9:15 | t1 |
| test.swift:9:15:9:15 | t1 | test.swift:11:8:11:8 | t1 |
| test.swift:12:9:12:14 | WriteDef | test.swift:13:19:13:19 | t2 |
| test.swift:12:14:12:14 | 0 | test.swift:12:9:12:14 | WriteDef |
| test.swift:15:5:15:5 | Phi | test.swift:15:15:15:15 | t2 |
| test.swift:17:5:17:10 | WriteDef | test.swift:21:15:21:15 | t1 |
| test.swift:17:10:17:10 | 0 | test.swift:17:5:17:10 | WriteDef |
| test.swift:29:18:29:21 | WriteDef | test.swift:30:15:30:15 | x |
| test.swift:29:18:29:21 | x | test.swift:29:18:29:21 | WriteDef |
| test.swift:29:26:29:29 | WriteDef | test.swift:31:15:31:15 | y |
| test.swift:29:26:29:29 | y | test.swift:29:26:29:29 | WriteDef |
| test.swift:42:16:42:19 | WriteDef | test.swift:45:8:45:8 | b |
| test.swift:42:16:42:19 | b | test.swift:42:16:42:19 | WriteDef |
| test.swift:43:9:43:13 | WriteDef | test.swift:46:13:46:13 | t1 |
| test.swift:43:19:43:26 | call to source() | test.swift:43:9:43:13 | WriteDef |
| test.swift:46:9:46:13 | WriteDef | test.swift:50:5:50:5 | Phi |
| test.swift:46:13:46:13 | t1 | test.swift:46:9:46:13 | WriteDef |
| test.swift:48:9:48:13 | WriteDef | test.swift:50:5:50:5 | Phi |
| test.swift:48:13:48:13 | 1 | test.swift:48:9:48:13 | WriteDef |
| test.swift:50:5:50:5 | Phi | test.swift:50:15:50:15 | t |
| test.swift:54:5:54:18 | WriteDef | test.swift:53:1:56:1 | arg[return] |
| test.swift:54:11:54:18 | call to source() | test.swift:54:5:54:18 | WriteDef |
| test.swift:59:9:59:12 | WriteDef | test.swift:60:15:60:15 | x |
| test.swift:59:18:59:18 | 0 | test.swift:59:9:59:12 | WriteDef |
| test.swift:12:9:12:14 | SSA def(t2) | test.swift:13:19:13:19 | t2 |
| test.swift:12:14:12:14 | 0 | test.swift:12:9:12:14 | SSA def(t2) |
| test.swift:15:5:15:5 | SSA phi(t2) | test.swift:15:15:15:15 | t2 |
| test.swift:17:5:17:10 | SSA def(t1) | test.swift:21:15:21:15 | t1 |
| test.swift:17:10:17:10 | 0 | test.swift:17:5:17:10 | SSA def(t1) |
| test.swift:29:18:29:21 | SSA def(x) | test.swift:30:15:30:15 | x |
| test.swift:29:18:29:21 | x | test.swift:29:18:29:21 | SSA def(x) |
| test.swift:29:26:29:29 | SSA def(y) | test.swift:31:15:31:15 | y |
| test.swift:29:26:29:29 | y | test.swift:29:26:29:29 | SSA def(y) |
| test.swift:42:16:42:19 | SSA def(b) | test.swift:45:8:45:8 | b |
| test.swift:42:16:42:19 | b | test.swift:42:16:42:19 | SSA def(b) |
| test.swift:43:9:43:13 | SSA def(t1) | test.swift:46:13:46:13 | t1 |
| test.swift:43:19:43:26 | call to source() | test.swift:43:9:43:13 | SSA def(t1) |
| test.swift:46:9:46:13 | SSA def(t) | test.swift:50:5:50:5 | SSA phi(t) |
| test.swift:46:13:46:13 | t1 | test.swift:46:9:46:13 | SSA def(t) |
| test.swift:48:9:48:13 | SSA def(t) | test.swift:50:5:50:5 | SSA phi(t) |
| test.swift:48:13:48:13 | 1 | test.swift:48:9:48:13 | SSA def(t) |
| test.swift:50:5:50:5 | SSA phi(t) | test.swift:50:15:50:15 | t |
| test.swift:54:5:54:18 | SSA def(arg) | test.swift:53:1:56:1 | arg[return] |
| test.swift:54:11:54:18 | call to source() | test.swift:54:5:54:18 | SSA def(arg) |
| test.swift:59:9:59:12 | SSA def(x) | test.swift:60:15:60:15 | x |
| test.swift:59:18:59:18 | 0 | test.swift:59:9:59:12 | SSA def(x) |
| test.swift:60:15:60:15 | x | test.swift:61:23:61:23 | x |
| test.swift:61:22:61:23 | &... | test.swift:62:15:62:15 | x |
| test.swift:61:22:61:23 | [post] &... | test.swift:62:15:62:15 | x |
| test.swift:61:23:61:23 | x | test.swift:61:22:61:23 | &... |
| test.swift:65:16:65:28 | WriteDef | test.swift:66:21:66:21 | arg1 |
| test.swift:65:16:65:28 | arg1 | test.swift:65:16:65:28 | WriteDef |
| test.swift:65:33:65:45 | WriteDef | test.swift:67:12:67:12 | arg2 |
| test.swift:65:33:65:45 | arg2 | test.swift:65:33:65:45 | WriteDef |
| test.swift:66:9:66:15 | WriteDef | test.swift:68:12:68:12 | temp |
| test.swift:66:21:66:21 | arg1 | test.swift:66:9:66:15 | WriteDef |
| test.swift:67:5:67:12 | WriteDef | test.swift:65:1:70:1 | arg1[return] |
| test.swift:67:12:67:12 | arg2 | test.swift:67:5:67:12 | WriteDef |
| test.swift:68:5:68:12 | WriteDef | test.swift:65:1:70:1 | arg2[return] |
| test.swift:68:12:68:12 | temp | test.swift:68:5:68:12 | WriteDef |
| test.swift:73:9:73:12 | WriteDef | test.swift:75:22:75:22 | x |
| test.swift:73:18:73:25 | call to source() | test.swift:73:9:73:12 | WriteDef |
| test.swift:74:9:74:12 | WriteDef | test.swift:75:32:75:32 | y |
| test.swift:74:18:74:18 | 0 | test.swift:74:9:74:12 | WriteDef |
| test.swift:65:16:65:28 | SSA def(arg1) | test.swift:66:21:66:21 | arg1 |
| test.swift:65:16:65:28 | arg1 | test.swift:65:16:65:28 | SSA def(arg1) |
| test.swift:65:33:65:45 | SSA def(arg2) | test.swift:67:12:67:12 | arg2 |
| test.swift:65:33:65:45 | arg2 | test.swift:65:33:65:45 | SSA def(arg2) |
| test.swift:66:9:66:15 | SSA def(temp) | test.swift:68:12:68:12 | temp |
| test.swift:66:21:66:21 | arg1 | test.swift:66:9:66:15 | SSA def(temp) |
| test.swift:67:5:67:12 | SSA def(arg1) | test.swift:65:1:70:1 | arg1[return] |
| test.swift:67:12:67:12 | arg2 | test.swift:67:5:67:12 | SSA def(arg1) |
| test.swift:68:5:68:12 | SSA def(arg2) | test.swift:65:1:70:1 | arg2[return] |
| test.swift:68:12:68:12 | temp | test.swift:68:5:68:12 | SSA def(arg2) |
| test.swift:73:9:73:12 | SSA def(x) | test.swift:75:22:75:22 | x |
| test.swift:73:18:73:25 | call to source() | test.swift:73:9:73:12 | SSA def(x) |
| test.swift:74:9:74:12 | SSA def(y) | test.swift:75:32:75:32 | y |
| test.swift:74:18:74:18 | 0 | test.swift:74:9:74:12 | SSA def(y) |
| test.swift:75:21:75:22 | &... | test.swift:76:15:76:15 | x |
| test.swift:75:21:75:22 | [post] &... | test.swift:76:15:76:15 | x |
| test.swift:75:22:75:22 | x | test.swift:75:21:75:22 | &... |
| test.swift:75:31:75:32 | &... | test.swift:77:15:77:15 | y |
| test.swift:75:31:75:32 | [post] &... | test.swift:77:15:77:15 | y |
| test.swift:75:32:75:32 | y | test.swift:75:31:75:32 | &... |
| test.swift:81:5:81:18 | WriteDef | test.swift:80:1:82:1 | arg[return] |
| test.swift:81:11:81:18 | call to source() | test.swift:81:5:81:18 | WriteDef |
| test.swift:84:1:91:1 | Phi | test.swift:84:1:91:1 | arg[return] |
| test.swift:84:48:84:54 | WriteDef | test.swift:85:8:85:8 | bool |
| test.swift:84:48:84:54 | bool | test.swift:84:48:84:54 | WriteDef |
| test.swift:86:9:86:22 | WriteDef | test.swift:84:1:91:1 | Phi |
| test.swift:86:15:86:22 | call to source() | test.swift:86:9:86:22 | WriteDef |
| test.swift:89:9:89:22 | WriteDef | test.swift:84:1:91:1 | Phi |
| test.swift:89:15:89:22 | call to source() | test.swift:89:9:89:22 | WriteDef |
| test.swift:93:17:93:23 | WriteDef | test.swift:104:50:104:50 | bool |
| test.swift:93:17:93:23 | bool | test.swift:93:17:93:23 | WriteDef |
| test.swift:95:13:95:16 | WriteDef | test.swift:96:19:96:19 | x |
| test.swift:95:22:95:22 | 0 | test.swift:95:13:95:16 | WriteDef |
| test.swift:81:5:81:18 | SSA def(arg) | test.swift:80:1:82:1 | arg[return] |
| test.swift:81:11:81:18 | call to source() | test.swift:81:5:81:18 | SSA def(arg) |
| test.swift:84:1:91:1 | SSA phi(arg) | test.swift:84:1:91:1 | arg[return] |
| test.swift:84:48:84:54 | SSA def(bool) | test.swift:85:8:85:8 | bool |
| test.swift:84:48:84:54 | bool | test.swift:84:48:84:54 | SSA def(bool) |
| test.swift:86:9:86:22 | SSA def(arg) | test.swift:84:1:91:1 | SSA phi(arg) |
| test.swift:86:15:86:22 | call to source() | test.swift:86:9:86:22 | SSA def(arg) |
| test.swift:89:9:89:22 | SSA def(arg) | test.swift:84:1:91:1 | SSA phi(arg) |
| test.swift:89:15:89:22 | call to source() | test.swift:89:9:89:22 | SSA def(arg) |
| test.swift:93:17:93:23 | SSA def(bool) | test.swift:104:50:104:50 | bool |
| test.swift:93:17:93:23 | bool | test.swift:93:17:93:23 | SSA def(bool) |
| test.swift:95:13:95:16 | SSA def(x) | test.swift:96:19:96:19 | x |
| test.swift:95:22:95:22 | 0 | test.swift:95:13:95:16 | SSA def(x) |
| test.swift:96:19:96:19 | x | test.swift:97:40:97:40 | x |
| test.swift:97:39:97:40 | &... | test.swift:98:19:98:19 | x |
| test.swift:97:39:97:40 | [post] &... | test.swift:98:19:98:19 | x |
| test.swift:97:40:97:40 | x | test.swift:97:39:97:40 | &... |
| test.swift:102:13:102:16 | WriteDef | test.swift:103:19:103:19 | x |
| test.swift:102:22:102:22 | 0 | test.swift:102:13:102:16 | WriteDef |
| test.swift:102:13:102:16 | SSA def(x) | test.swift:103:19:103:19 | x |
| test.swift:102:22:102:22 | 0 | test.swift:102:13:102:16 | SSA def(x) |
| test.swift:103:19:103:19 | x | test.swift:104:41:104:41 | x |
| test.swift:104:40:104:41 | &... | test.swift:105:19:105:19 | x |
| test.swift:104:40:104:41 | [post] &... | test.swift:105:19:105:19 | x |
| test.swift:104:41:104:41 | x | test.swift:104:40:104:41 | &... |
| test.swift:109:9:109:14 | WriteDef | test.swift:110:12:110:12 | arg |
| test.swift:109:9:109:14 | arg | test.swift:109:9:109:14 | WriteDef |
| test.swift:113:14:113:19 | WriteDef | test.swift:114:19:114:19 | arg |
| test.swift:113:14:113:19 | arg | test.swift:113:14:113:19 | WriteDef |
| test.swift:113:24:113:41 | WriteDef | test.swift:114:12:114:12 | lambda |
| test.swift:113:24:113:41 | lambda | test.swift:113:24:113:41 | WriteDef |
| test.swift:118:9:118:12 | WriteDef | test.swift:119:31:119:31 | x |
| test.swift:118:18:118:25 | call to source() | test.swift:118:9:118:12 | WriteDef |
| test.swift:119:9:119:12 | WriteDef | test.swift:120:15:120:15 | y |
| test.swift:119:18:119:44 | call to forward(arg:lambda:) | test.swift:119:9:119:12 | WriteDef |
| test.swift:122:9:122:12 | WriteDef | test.swift:126:15:126:15 | z |
| test.swift:122:18:125:6 | call to forward(arg:lambda:) | test.swift:122:9:122:12 | WriteDef |
| test.swift:123:10:123:13 | WriteDef | test.swift:124:16:124:16 | i |
| test.swift:123:10:123:13 | i | test.swift:123:10:123:13 | WriteDef |
| test.swift:128:9:128:16 | WriteDef | test.swift:132:15:132:15 | clean |
| test.swift:128:22:131:6 | call to forward(arg:lambda:) | test.swift:128:9:128:16 | WriteDef |
| test.swift:141:9:141:9 | WriteDef | test.swift:145:15:145:15 | lambda2 |
| test.swift:141:19:144:5 | { ... } | test.swift:141:9:141:9 | WriteDef |
| test.swift:142:10:142:13 | WriteDef | test.swift:143:16:143:16 | i |
| test.swift:142:10:142:13 | i | test.swift:142:10:142:13 | WriteDef |
| test.swift:147:9:147:9 | WriteDef | test.swift:151:15:151:15 | lambdaSource |
| test.swift:147:24:150:5 | { ... } | test.swift:147:9:147:9 | WriteDef |
| test.swift:109:9:109:14 | SSA def(arg) | test.swift:110:12:110:12 | arg |
| test.swift:109:9:109:14 | arg | test.swift:109:9:109:14 | SSA def(arg) |
| test.swift:113:14:113:19 | SSA def(arg) | test.swift:114:19:114:19 | arg |
| test.swift:113:14:113:19 | arg | test.swift:113:14:113:19 | SSA def(arg) |
| test.swift:113:24:113:41 | SSA def(lambda) | test.swift:114:12:114:12 | lambda |
| test.swift:113:24:113:41 | lambda | test.swift:113:24:113:41 | SSA def(lambda) |
| test.swift:118:9:118:12 | SSA def(x) | test.swift:119:31:119:31 | x |
| test.swift:118:18:118:25 | call to source() | test.swift:118:9:118:12 | SSA def(x) |
| test.swift:119:9:119:12 | SSA def(y) | test.swift:120:15:120:15 | y |
| test.swift:119:18:119:44 | call to forward(arg:lambda:) | test.swift:119:9:119:12 | SSA def(y) |
| test.swift:122:9:122:12 | SSA def(z) | test.swift:126:15:126:15 | z |
| test.swift:122:18:125:6 | call to forward(arg:lambda:) | test.swift:122:9:122:12 | SSA def(z) |
| test.swift:123:10:123:13 | SSA def(i) | test.swift:124:16:124:16 | i |
| test.swift:123:10:123:13 | i | test.swift:123:10:123:13 | SSA def(i) |
| test.swift:128:9:128:16 | SSA def(clean) | test.swift:132:15:132:15 | clean |
| test.swift:128:22:131:6 | call to forward(arg:lambda:) | test.swift:128:9:128:16 | SSA def(clean) |
| test.swift:141:9:141:9 | SSA def(lambda2) | test.swift:145:15:145:15 | lambda2 |
| test.swift:141:19:144:5 | { ... } | test.swift:141:9:141:9 | SSA def(lambda2) |
| test.swift:142:10:142:13 | SSA def(i) | test.swift:143:16:143:16 | i |
| test.swift:142:10:142:13 | i | test.swift:142:10:142:13 | SSA def(i) |
| test.swift:147:9:147:9 | SSA def(lambdaSource) | test.swift:151:15:151:15 | lambdaSource |
| test.swift:147:24:150:5 | { ... } | test.swift:147:9:147:9 | SSA def(lambdaSource) |
| test.swift:151:15:151:15 | lambdaSource | test.swift:159:16:159:16 | lambdaSource |
| test.swift:153:9:153:9 | WriteDef | test.swift:157:5:157:5 | lambdaSink |
| test.swift:153:22:156:5 | { ... } | test.swift:153:9:153:9 | WriteDef |
| test.swift:154:10:154:13 | WriteDef | test.swift:155:19:155:19 | i |
| test.swift:154:10:154:13 | i | test.swift:154:10:154:13 | WriteDef |
| test.swift:153:9:153:9 | SSA def(lambdaSink) | test.swift:157:5:157:5 | lambdaSink |
| test.swift:153:22:156:5 | { ... } | test.swift:153:9:153:9 | SSA def(lambdaSink) |
| test.swift:154:10:154:13 | SSA def(i) | test.swift:155:19:155:19 | i |
| test.swift:154:10:154:13 | i | test.swift:154:10:154:13 | SSA def(i) |
| test.swift:157:5:157:5 | lambdaSink | test.swift:159:5:159:5 | lambdaSink |
| test.swift:162:7:162:7 | WriteDef | test.swift:162:7:162:7 | self[return] |
| test.swift:162:7:162:7 | self | test.swift:162:7:162:7 | WriteDef |
| test.swift:163:7:163:7 | self | test.swift:163:7:163:7 | WriteDef |
| test.swift:163:7:163:7 | self | test.swift:163:7:163:7 | WriteDef |
| test.swift:163:7:163:7 | self | test.swift:163:7:163:7 | WriteDef |
| test.swift:163:7:163:7 | value | test.swift:163:7:163:7 | WriteDef |
| test.swift:165:3:165:3 | WriteDef | test.swift:166:5:166:5 | self |
| test.swift:165:3:165:3 | self | test.swift:165:3:165:3 | WriteDef |
| test.swift:162:7:162:7 | SSA def(self) | test.swift:162:7:162:7 | self[return] |
| test.swift:162:7:162:7 | self | test.swift:162:7:162:7 | SSA def(self) |
| test.swift:163:7:163:7 | self | test.swift:163:7:163:7 | SSA def(self) |
| test.swift:163:7:163:7 | self | test.swift:163:7:163:7 | SSA def(self) |
| test.swift:163:7:163:7 | self | test.swift:163:7:163:7 | SSA def(self) |
| test.swift:163:7:163:7 | value | test.swift:163:7:163:7 | SSA def(value) |
| test.swift:165:3:165:3 | SSA def(self) | test.swift:166:5:166:5 | self |
| test.swift:165:3:165:3 | self | test.swift:165:3:165:3 | SSA def(self) |
| test.swift:166:5:166:5 | [post] self | test.swift:165:3:167:3 | self[return] |
| test.swift:166:5:166:5 | self | test.swift:165:3:167:3 | self[return] |
| test.swift:169:8:169:8 | WriteDef | test.swift:170:5:170:5 | self |
| test.swift:169:8:169:8 | self | test.swift:169:8:169:8 | WriteDef |
| test.swift:169:12:169:22 | WriteDef | test.swift:170:9:170:9 | value |
| test.swift:169:12:169:22 | value | test.swift:169:12:169:22 | WriteDef |
| test.swift:169:8:169:8 | SSA def(self) | test.swift:170:5:170:5 | self |
| test.swift:169:8:169:8 | self | test.swift:169:8:169:8 | SSA def(self) |
| test.swift:169:12:169:22 | SSA def(value) | test.swift:170:9:170:9 | value |
| test.swift:169:12:169:22 | value | test.swift:169:12:169:22 | SSA def(value) |
| test.swift:170:5:170:5 | [post] self | test.swift:169:3:171:3 | self[return] |
| test.swift:170:5:170:5 | self | test.swift:169:3:171:3 | self[return] |
| test.swift:173:8:173:8 | WriteDef | test.swift:174:12:174:12 | self |
| test.swift:173:8:173:8 | self | test.swift:173:8:173:8 | WriteDef |
| test.swift:173:8:173:8 | SSA def(self) | test.swift:174:12:174:12 | self |
| test.swift:173:8:173:8 | self | test.swift:173:8:173:8 | SSA def(self) |
| test.swift:174:12:174:12 | [post] self | test.swift:173:3:175:3 | self[return] |
| test.swift:174:12:174:12 | self | test.swift:173:3:175:3 | self[return] |
| test.swift:179:7:179:7 | WriteDef | test.swift:180:3:180:3 | a |
| test.swift:179:11:179:13 | call to init() | test.swift:179:7:179:7 | WriteDef |
| test.swift:179:7:179:7 | SSA def(a) | test.swift:180:3:180:3 | a |
| test.swift:179:11:179:13 | call to init() | test.swift:179:7:179:7 | SSA def(a) |
| test.swift:180:3:180:3 | [post] a | test.swift:181:13:181:13 | a |
| test.swift:180:3:180:3 | a | test.swift:181:13:181:13 | a |
| test.swift:184:7:184:7 | WriteDef | test.swift:184:7:184:7 | self[return] |
| test.swift:184:7:184:7 | self | test.swift:184:7:184:7 | WriteDef |
| test.swift:185:7:185:7 | self | test.swift:185:7:185:7 | WriteDef |
| test.swift:185:7:185:7 | self | test.swift:185:7:185:7 | WriteDef |
| test.swift:185:7:185:7 | self | test.swift:185:7:185:7 | WriteDef |
| test.swift:185:7:185:7 | value | test.swift:185:7:185:7 | WriteDef |
| test.swift:187:3:187:3 | WriteDef | test.swift:188:5:188:5 | self |
| test.swift:187:3:187:3 | self | test.swift:187:3:187:3 | WriteDef |
| test.swift:184:7:184:7 | SSA def(self) | test.swift:184:7:184:7 | self[return] |
| test.swift:184:7:184:7 | self | test.swift:184:7:184:7 | SSA def(self) |
| test.swift:185:7:185:7 | self | test.swift:185:7:185:7 | SSA def(self) |
| test.swift:185:7:185:7 | self | test.swift:185:7:185:7 | SSA def(self) |
| test.swift:185:7:185:7 | self | test.swift:185:7:185:7 | SSA def(self) |
| test.swift:185:7:185:7 | value | test.swift:185:7:185:7 | SSA def(value) |
| test.swift:187:3:187:3 | SSA def(self) | test.swift:188:5:188:5 | self |
| test.swift:187:3:187:3 | self | test.swift:187:3:187:3 | SSA def(self) |
| test.swift:188:5:188:5 | [post] self | test.swift:187:3:189:3 | self[return] |
| test.swift:188:5:188:5 | self | test.swift:187:3:189:3 | self[return] |
| test.swift:193:7:193:7 | WriteDef | test.swift:194:3:194:3 | b |
| test.swift:193:11:193:13 | call to init() | test.swift:193:7:193:7 | WriteDef |
| test.swift:193:7:193:7 | SSA def(b) | test.swift:194:3:194:3 | b |
| test.swift:193:11:193:13 | call to init() | test.swift:193:7:193:7 | SSA def(b) |
| test.swift:194:3:194:3 | [post] b | test.swift:195:13:195:13 | b |
| test.swift:194:3:194:3 | b | test.swift:195:13:195:13 | b |
| test.swift:199:7:199:7 | WriteDef | test.swift:200:3:200:3 | a |
| test.swift:199:11:199:13 | call to init() | test.swift:199:7:199:7 | WriteDef |
| test.swift:199:7:199:7 | SSA def(a) | test.swift:200:3:200:3 | a |
| test.swift:199:11:199:13 | call to init() | test.swift:199:7:199:7 | SSA def(a) |
| test.swift:200:3:200:3 | [post] a | test.swift:201:13:201:13 | a |
| test.swift:200:3:200:3 | a | test.swift:201:13:201:13 | a |
| test.swift:205:7:205:7 | WriteDef | test.swift:206:3:206:3 | a |
| test.swift:205:11:205:13 | call to init() | test.swift:205:7:205:7 | WriteDef |
| test.swift:205:7:205:7 | SSA def(a) | test.swift:206:3:206:3 | a |
| test.swift:205:11:205:13 | call to init() | test.swift:205:7:205:7 | SSA def(a) |
| test.swift:206:3:206:3 | [post] a | test.swift:207:13:207:13 | a |
| test.swift:206:3:206:3 | a | test.swift:207:13:207:13 | a |
| test.swift:211:7:211:7 | WriteDef | test.swift:212:3:212:3 | a |
| test.swift:211:11:211:13 | call to init() | test.swift:211:7:211:7 | WriteDef |
| test.swift:211:7:211:7 | SSA def(a) | test.swift:212:3:212:3 | a |
| test.swift:211:11:211:13 | call to init() | test.swift:211:7:211:7 | SSA def(a) |
| test.swift:212:3:212:3 | [post] a | test.swift:213:13:213:13 | a |
| test.swift:212:3:212:3 | a | test.swift:213:13:213:13 | a |
| test.swift:217:7:217:7 | WriteDef | test.swift:218:3:218:3 | b |
| test.swift:217:11:217:13 | call to init() | test.swift:217:7:217:7 | WriteDef |
| test.swift:217:7:217:7 | SSA def(b) | test.swift:218:3:218:3 | b |
| test.swift:217:11:217:13 | call to init() | test.swift:217:7:217:7 | SSA def(b) |
| test.swift:218:3:218:3 | [post] b | test.swift:219:13:219:13 | b |
| test.swift:218:3:218:3 | b | test.swift:219:13:219:13 | b |
| test.swift:222:7:222:7 | WriteDef | test.swift:222:7:222:7 | self[return] |
| test.swift:222:7:222:7 | WriteDef | test.swift:222:7:222:7 | self[return] |
| test.swift:222:7:222:7 | self | test.swift:222:7:222:7 | WriteDef |
| test.swift:222:7:222:7 | self | test.swift:222:7:222:7 | WriteDef |
| test.swift:223:7:223:7 | self | test.swift:223:7:223:7 | WriteDef |
| test.swift:224:5:224:5 | WriteDef | test.swift:224:5:226:5 | self[return] |
| test.swift:224:5:224:5 | self | test.swift:224:5:224:5 | WriteDef |
| test.swift:227:5:227:5 | WriteDef | test.swift:227:5:229:5 | self[return] |
| test.swift:227:5:227:5 | self | test.swift:227:5:227:5 | WriteDef |
| test.swift:234:7:234:7 | WriteDef | test.swift:235:13:235:13 | a |
| test.swift:234:11:234:31 | call to init() | test.swift:234:7:234:7 | WriteDef |
| test.swift:222:7:222:7 | SSA def(self) | test.swift:222:7:222:7 | self[return] |
| test.swift:222:7:222:7 | SSA def(self) | test.swift:222:7:222:7 | self[return] |
| test.swift:222:7:222:7 | self | test.swift:222:7:222:7 | SSA def(self) |
| test.swift:222:7:222:7 | self | test.swift:222:7:222:7 | SSA def(self) |
| test.swift:223:7:223:7 | self | test.swift:223:7:223:7 | SSA def(self) |
| test.swift:224:5:224:5 | SSA def(self) | test.swift:224:5:226:5 | self[return] |
| test.swift:224:5:224:5 | self | test.swift:224:5:224:5 | SSA def(self) |
| test.swift:227:5:227:5 | SSA def(self) | test.swift:227:5:229:5 | self[return] |
| test.swift:227:5:227:5 | self | test.swift:227:5:227:5 | SSA def(self) |
| test.swift:234:7:234:7 | SSA def(a) | test.swift:235:13:235:13 | a |
| test.swift:234:11:234:31 | call to init() | test.swift:234:7:234:7 | SSA def(a) |
| test.swift:235:13:235:13 | [post] a | test.swift:237:3:237:3 | a |
| test.swift:235:13:235:13 | a | test.swift:237:3:237:3 | a |
| test.swift:237:3:237:3 | [post] a | test.swift:238:13:238:13 | a |
| test.swift:237:3:237:3 | a | test.swift:238:13:238:13 | a |
| test.swift:242:9:242:9 | self | test.swift:242:9:242:9 | WriteDef |
| test.swift:242:9:242:9 | self | test.swift:242:9:242:9 | WriteDef |
| test.swift:242:9:242:9 | self | test.swift:242:9:242:9 | WriteDef |
| test.swift:242:9:242:9 | value | test.swift:242:9:242:9 | WriteDef |
| test.swift:243:9:243:9 | WriteDef | test.swift:243:18:243:18 | self |
| test.swift:243:9:243:9 | self | test.swift:243:9:243:9 | WriteDef |
| test.swift:242:9:242:9 | self | test.swift:242:9:242:9 | SSA def(self) |
| test.swift:242:9:242:9 | self | test.swift:242:9:242:9 | SSA def(self) |
| test.swift:242:9:242:9 | self | test.swift:242:9:242:9 | SSA def(self) |
| test.swift:242:9:242:9 | value | test.swift:242:9:242:9 | SSA def(value) |
| test.swift:243:9:243:9 | SSA def(self) | test.swift:243:18:243:18 | self |
| test.swift:243:9:243:9 | self | test.swift:243:9:243:9 | SSA def(self) |
| test.swift:243:18:243:18 | [post] self | test.swift:243:9:243:42 | self[return] |
| test.swift:243:18:243:18 | self | test.swift:243:9:243:42 | self[return] |
| test.swift:246:5:246:5 | WriteDef | test.swift:247:9:247:9 | self |
| test.swift:246:5:246:5 | self | test.swift:246:5:246:5 | WriteDef |
| test.swift:246:5:246:5 | SSA def(self) | test.swift:247:9:247:9 | self |
| test.swift:246:5:246:5 | self | test.swift:246:5:246:5 | SSA def(self) |
| test.swift:247:9:247:9 | [post] self | test.swift:246:5:248:5 | self[return] |
| test.swift:247:9:247:9 | self | test.swift:246:5:248:5 | self[return] |
| test.swift:252:23:252:23 | value | test.swift:252:23:252:23 | WriteDef |
| test.swift:263:9:263:9 | WriteDef | test.swift:264:15:264:15 | x |
| test.swift:263:13:263:28 | call to optionalSource() | test.swift:263:9:263:9 | WriteDef |
| test.swift:252:23:252:23 | value | test.swift:252:23:252:23 | SSA def(value) |
| test.swift:263:9:263:9 | SSA def(x) | test.swift:264:15:264:15 | x |
| test.swift:263:13:263:28 | call to optionalSource() | test.swift:263:9:263:9 | SSA def(x) |
| test.swift:264:15:264:15 | x | test.swift:264:15:264:16 | ...! |
| test.swift:264:15:264:15 | x | test.swift:266:15:266:15 | x |
| test.swift:266:15:266:15 | x | test.swift:266:15:266:16 | ...? |
| test.swift:266:15:266:15 | x | test.swift:267:15:267:15 | x |
| test.swift:266:15:266:25 | call to signum() | test.swift:266:15:266:25 | OptionalEvaluationExpr |
| test.swift:267:15:267:15 | x | test.swift:268:16:268:16 | x |
| test.swift:277:9:277:9 | WriteDef | test.swift:279:15:279:15 | t1 |
| test.swift:277:14:277:26 | (...) | test.swift:277:9:277:9 | WriteDef |
| test.swift:277:9:277:9 | SSA def(t1) | test.swift:279:15:279:15 | t1 |
| test.swift:277:14:277:26 | (...) | test.swift:277:9:277:9 | SSA def(t1) |
| test.swift:279:15:279:15 | t1 | test.swift:280:15:280:15 | t1 |
| test.swift:280:15:280:15 | [post] t1 | test.swift:281:15:281:15 | t1 |
| test.swift:280:15:280:15 | t1 | test.swift:281:15:281:15 | t1 |
@@ -211,17 +211,17 @@
| test.swift:291:15:291:15 | t1 | test.swift:292:15:292:15 | t1 |
| test.swift:292:15:292:15 | [post] t1 | test.swift:293:15:293:15 | t1 |
| test.swift:292:15:292:15 | t1 | test.swift:293:15:293:15 | t1 |
| test.swift:297:9:297:9 | WriteDef | test.swift:298:14:298:14 | t1 |
| test.swift:297:14:297:45 | (...) | test.swift:297:9:297:9 | WriteDef |
| test.swift:298:9:298:9 | WriteDef | test.swift:305:15:305:15 | t2 |
| test.swift:298:14:298:14 | t1 | test.swift:298:9:298:9 | WriteDef |
| test.swift:297:9:297:9 | SSA def(t1) | test.swift:298:14:298:14 | t1 |
| test.swift:297:14:297:45 | (...) | test.swift:297:9:297:9 | SSA def(t1) |
| test.swift:298:9:298:9 | SSA def(t2) | test.swift:305:15:305:15 | t2 |
| test.swift:298:14:298:14 | t1 | test.swift:298:9:298:9 | SSA def(t2) |
| test.swift:298:14:298:14 | t1 | test.swift:299:21:299:21 | t1 |
| test.swift:299:9:299:17 | WriteDef | test.swift:309:15:309:15 | a |
| test.swift:299:9:299:17 | WriteDef | test.swift:310:15:310:15 | b |
| test.swift:299:9:299:17 | WriteDef | test.swift:311:15:311:15 | c |
| test.swift:299:21:299:21 | t1 | test.swift:299:9:299:17 | WriteDef |
| test.swift:299:21:299:21 | t1 | test.swift:299:9:299:17 | WriteDef |
| test.swift:299:21:299:21 | t1 | test.swift:299:9:299:17 | WriteDef |
| test.swift:299:9:299:17 | SSA def(a) | test.swift:309:15:309:15 | a |
| test.swift:299:9:299:17 | SSA def(b) | test.swift:310:15:310:15 | b |
| test.swift:299:9:299:17 | SSA def(c) | test.swift:311:15:311:15 | c |
| test.swift:299:21:299:21 | t1 | test.swift:299:9:299:17 | SSA def(a) |
| test.swift:299:21:299:21 | t1 | test.swift:299:9:299:17 | SSA def(b) |
| test.swift:299:21:299:21 | t1 | test.swift:299:9:299:17 | SSA def(c) |
| test.swift:299:21:299:21 | t1 | test.swift:301:15:301:15 | t1 |
| test.swift:301:15:301:15 | t1 | test.swift:302:15:302:15 | t1 |
| test.swift:302:15:302:15 | [post] t1 | test.swift:303:15:303:15 | t1 |