CodeQL library for C/C++
codeql/cpp-all 0.13.1 (changelog, source)
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Predicate fromPhiNode

Holds if nodeTo receives flow from the phi node nodeFrom.

Import path

import semmle.code.cpp.ir.dataflow.internal.SsaInternals
predicate fromPhiNode(SsaPhiNode nodeFrom, Node nodeTo)