[all-commits] [llvm/llvm-project] 33da60: [AMDGPU][InferAddressSpaces] Only rewrite address-...

[Juan Manuel Martinez Caamaño via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 33da608ecc0fddbb38b01415d32464db1d867df1
      https://github.com/llvm/llvm-project/commit/33da608ecc0fddbb38b01415d32464db1d867df1
  Author: Juan Manuel MARTINEZ CAAMAÑO <juamarti at amd.com>
  Date:   2023-05-16 (Tue, 16 May 2023)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
    A llvm/test/Transforms/InferAddressSpaces/AMDGPU/flat-fadd-fmin-fmax-intrinsics.ll

  Log Message:
  -----------
  [AMDGPU][InferAddressSpaces] Only rewrite address-spaces that can be trivially casted to flat for llvm.amdgcn.flat.atomic.{fadd,fmax,fmin}

The intrinsic @llvm.amdgcn.flat.atomic.{fadd,fmax,fmin} can only be
selected for flat address spaces (constant, flat and global).

This patch restricts the cases over which GCNTTIImpl::rewriteIntrinsicWithAddressSpace
rewrites the intrinsic.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D149938