[all-commits] [llvm/llvm-project] 5486e0: [InstSimplify] remove poison-unsafe insertelement ...

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  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 5486e00dc3e3bb9969f1e8dbddfd18bb92c99e56
      https://github.com/llvm/llvm-project/commit/5486e00dc3e3bb9969f1e8dbddfd18bb92c99e56
  Author: Sanjay Patel <spatel at rotateright.com>
  Date:   2020-05-01 (Fri, 01 May 2020)

  Changed paths:
    M llvm/lib/Analysis/InstructionSimplify.cpp
    M llvm/test/Transforms/InstCombine/extractelement.ll
    M llvm/test/Transforms/InstSimplify/insertelement.ll

  Log Message:
  -----------
  [InstSimplify] remove poison-unsafe insertelement of undef value

PR45481:
https://bugs.llvm.org/show_bug.cgi?id=45481

SDAG has an identical transform to this, so there's little
chance of any real-world impact. OTOH, that means we are
effectively sweeping the bug out of sight because poison
exists in codegen too.