[all-commits] [llvm/llvm-project] e177c5: [InstSimplify] fold copysign with same args to the...

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  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: e177c5a00da34ba61b762e2b32bd96e33b0c10b4
      https://github.com/llvm/llvm-project/commit/e177c5a00da34ba61b762e2b32bd96e33b0c10b4
  Author: Sanjay Patel <spatel at rotateright.com>
  Date:   2019-11-26 (Tue, 26 Nov 2019)

  Changed paths:
    M llvm/lib/Analysis/InstructionSimplify.cpp
    M llvm/test/Transforms/InstSimplify/call.ll

  Log Message:
  -----------
  [InstSimplify] fold copysign with same args to the arg

This is correct for any value including NaN/inf.

We don't have this fold directly in the backend either,
but x86 manages to get it after converting things to bitops.