[PATCH] D76005: [ValueTracking] Let isGuaranteedNotToBeUndefOrPoison look into more constants and bitcast/alloca/gep

[Juneyoung Lee via Phabricator via llvm-commits]

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This patch helps isGuaranteedNotToBeUndefOrPoison look into more constants and instructions (bitcast/alloca/gep).

To deal with bitcast, Depth is added to isGuaranteedNotToBeUndefOrPoison.

This patch is splitted from https://reviews.llvm.org/D75808.

Checked with Alive2


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D76005

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

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