[all-commits] [llvm/llvm-project] 00e53d: [X86] Specifically limit fmin/fmax commutativity t...

[Benjamin Kramer via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 00e53d912dd768047a4fdc6e0e9b3ac7f0bcc5e5
      https://github.com/llvm/llvm-project/commit/00e53d912dd768047a4fdc6e0e9b3ac7f0bcc5e5
  Author: Benjamin Kramer <benny.kra at googlemail.com>
  Date:   2019-11-05 (Tue, 05 Nov 2019)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/avx512-unsafe-fp-math.ll
    M llvm/test/CodeGen/X86/machine-combiner.ll
    M llvm/test/CodeGen/X86/sse-minmax.ll
    M llvm/test/CodeGen/X86/stack-folding-fp-avx512.ll

  Log Message:
  -----------
  [X86] Specifically limit fmin/fmax commutativity to NoNaNs + NoSignedZeros

The backend UnsafeFPMath flag is not a superset of all the others, so
limit it to the exact bits needed.