C++: Replace getResultType() with getResultIRType() in IR dataflow

cpp/ql/src/semmle/code/cpp/ir/dataflow/internal/DataFlowPrivate.qll

@@ -234,20 +234,20 @@ predicate clearsContent(Node n, Content c) {
 }
 
 /** Gets the type of `n` used for type pruning. */
-Type getNodeType(Node n) {
+IRType getNodeType(Node n) {
   suppressUnusedNode(n) and
-  result instanceof VoidType // stub implementation
+  result instanceof IRVoidType // stub implementation
 }
 
 /** Gets a string representation of a type returned by `getNodeType`. */
-string ppReprType(Type t) { none() } // stub implementation
+string ppReprType(IRType t) { none() } // stub implementation
 
 /**
  * Holds if `t1` and `t2` are compatible, that is, whether data can flow from
  * a node of type `t1` to a node of type `t2`.
  */
 pragma[inline]
-predicate compatibleTypes(Type t1, Type t2) {
+predicate compatibleTypes(IRType t1, IRType t2) {
   any() // stub implementation
 }
 
@@ -271,7 +271,7 @@ class DataFlowCallable = Declaration;
 
 class DataFlowExpr = Expr;
 
-class DataFlowType = Type;
+class DataFlowType = IRType;
 
 /** A function call relevant for data flow. */
 class DataFlowCall extends CallInstruction {

cpp/ql/src/semmle/code/cpp/ir/dataflow/internal/DataFlowUtil.qll

@@ -33,7 +33,7 @@ class Node extends TIRDataFlowNode {
   Function getFunction() { none() } // overridden in subclasses
 
   /** Gets the type of this node. */
-  Type getType() { none() } // overridden in subclasses
+  IRType getType() { none() } // overridden in subclasses
 
   /** Gets the instruction corresponding to this node, if any. */
   Instruction asInstruction() { result = this.(InstructionNode).getInstruction() }
@@ -88,7 +88,7 @@ class Node extends TIRDataFlowNode {
   /**
    * Gets an upper bound on the type of this node.
    */
-  Type getTypeBound() { result = getType() }
+  IRType getTypeBound() { result = getType() }
 
   /** Gets the location of this element. */
   Location getLocation() { none() } // overridden by subclasses
@@ -125,7 +125,7 @@ class InstructionNode extends Node, TInstructionNode {
 
   override Function getFunction() { result = instr.getEnclosingFunction() }
 
-  override Type getType() { result = instr.getResultType() }
+  override IRType getType() { result = instr.getResultIRType() }
 
   override Location getLocation() { result = instr.getLocation() }
 
@@ -151,7 +151,7 @@ class OperandNode extends Node, TOperandNode {
 
   override Function getFunction() { result = op.getUse().getEnclosingFunction() }
 
-  override Type getType() { result = op.getType() }
+  override IRType getType() { result = op.getIRType() }
 
   override Location getLocation() { result = op.getLocation() }
 
@@ -449,7 +449,7 @@ class VariableNode extends Node, TVariableNode {
     result = v
   }
 
-  override Type getType() { result = v.getType() }
+  override IRType getType() { result.getCanonicalLanguageType().hasUnspecifiedType(v.getType(), _) }
 
   override Location getLocation() { result = v.getLocation() }