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SSA: Replace the Guards interface in the SSA data flow integration.

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This commit is contained in:
Anders Schack-Mulligen
2025-03-05 11:45:10 +01:00
parent a02735326a
commit c6761db2fc
6 changed files with 62 additions and 58 deletions
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22
javascript/ql/lib/semmle/javascript/dataflow/internal/sharedlib/Ssa.qll
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@@ -81,7 +81,19 @@ module SsaDataflowInput implements DataFlowIntegrationInputSig {
class Guard extends js::ControlFlowNode {
Guard() { this = any(js::ConditionGuardNode g).getTest() }
predicate hasCfgNode(js::BasicBlock bb, int i) { this = bb.getNode(i) }
/**
* Holds if the control flow branching from `bb1` is dependent on this guard,
* and that the edge from `bb1` to `bb2` corresponds to the evaluation of this
* guard to `branch`.
*/
predicate controlsBranchEdge(js::BasicBlock bb1, js::BasicBlock bb2, boolean branch) {
exists(js::ConditionGuardNode g |
g.getTest() = this and
bb1 = this.getBasicBlock() and
bb2 = g.getBasicBlock() and
branch = g.getOutcome()
)
}
}
pragma[inline]
@@ -92,14 +104,6 @@ module SsaDataflowInput implements DataFlowIntegrationInputSig {
branch = g.getOutcome()
)
}
js::BasicBlock getAConditionalBasicBlockSuccessor(js::BasicBlock bb, boolean branch) {
exists(js::ConditionGuardNode g |
bb = g.getTest().getBasicBlock() and
result = g.getBasicBlock() and
branch = g.getOutcome()
)
}
}
import DataFlowIntegration<SsaDataflowInput>