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C++: Cache simpleLocalFlowStep instead of simpleInstructionLocalFlowStep

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This commit is contained in:
Mathias Vorreiter Pedersen
2020-09-17 21:13:02 +02:00
committed by Ian Lynagh
parent 795bf0d93c
commit 535c8cc87e
1 changed files with 1 additions and 1 deletions
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cpp/ql/src/semmle/code/cpp/ir/dataflow/internal/DataFlowUtil.qll
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@@ -545,6 +545,7 @@ predicate localFlowStep(Node nodeFrom, Node nodeTo) { simpleLocalFlowStep(nodeFr
* This is the local flow predicate that's used as a building block in global
* data flow. It may have less flow than the `localFlowStep` predicate.
*/
cached
predicate simpleLocalFlowStep(Node nodeFrom, Node nodeTo) {
// Operand -> Instruction flow
simpleInstructionLocalFlowStep(nodeFrom.asOperand(), nodeTo.asInstruction())
@@ -605,7 +606,6 @@ private predicate simpleOperandLocalFlowStep(Instruction iFrom, Operand opTo) {
)
}
cached
private predicate simpleInstructionLocalFlowStep(Operand opFrom, Instruction iTo) {
iTo.(CopyInstruction).getSourceValueOperand() = opFrom
or