[PATCH] D86477: [ValueTracking] Let getGuaranteedNonPoisonOp find multiple non-poison operands

[Juneyoung Lee via Phabricator via llvm-commits]

aqjune created this revision.
aqjune added reviewers: fhahn, jdoerfert, nikic.
Herald added subscribers: llvm-commits, jfb, hiraditya.
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aqjune requested review of this revision.

This patch helps getGuaranteedNonPoisonOp find multiple non-poison operands.

Instead of special-casing llvm.assume, I think it is also a viable option to
add noundef to Intrinsics.td. If it makes sense, I'll make a patch for that.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D86477

Files:
  llvm/include/llvm/Analysis/ValueTracking.h
  llvm/lib/Analysis/ValueTracking.cpp
  llvm/lib/Transforms/Instrumentation/PoisonChecking.cpp
  llvm/test/Transforms/InstSimplify/freeze-noundef.ll

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