[PATCH] D76702: [ValueTracking] improve undef/poison analysis for constants

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 252341.
spatel marked an inline comment as done.
spatel added a comment.

Patch updated:
Disallow constant expressions or constant expression elements in a vector (tests added with rG6c3c7a0 <https://reviews.llvm.org/rG6c3c7a0dd645f4b6e1169dc0f4163f227aca21f4>).
Could we unwrap the ConstExpr by opcode similar to what we are doing for Instruction as a follow-up improvement?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D76702/new/

https://reviews.llvm.org/D76702

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

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