[all-commits] [llvm/llvm-project] 6dbd45: AMDGPU: Remove pointless libcall optimization of f...

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6dbd458128dd24d35c0fe9121bde62f0c4da92f8
      https://github.com/llvm/llvm-project/commit/6dbd458128dd24d35c0fe9121bde62f0c4da92f8
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2023-08-09 (Wed, 09 Aug 2023)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULibCalls.cpp
    M llvm/test/CodeGen/AMDGPU/simplify-libcalls.ll

  Log Message:
  -----------
  AMDGPU: Remove pointless libcall optimization of fma/mad

After the library is linked and trivially inlined, the generic fma and
fmuladd intrinsics already handle these cases, and with precise flag
handling. This was requiring all fast math flags when we really just
need nsz for the fma(a, b, 0) case.

https://reviews.llvm.org/D156677