[all-commits] [llvm/llvm-project] 8feb67: [AMDGPU] Take BUF instructions into account in may...

[Pierre van Houtryve via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8feb6762ba9fb83f8e13ef9486c3b743e1b5cfa7
      https://github.com/llvm/llvm-project/commit/8feb6762ba9fb83f8e13ef9486c3b743e1b5cfa7
  Author: Pierre van Houtryve <pierre.vanhoutryve at amd.com>
  Date:   2025-12-03 (Wed, 03 Dec 2025)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp
    M llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
    M llvm/lib/Target/AMDGPU/SIInstrInfo.h
    M llvm/test/CodeGen/AMDGPU/release-vgprs.mir

  Log Message:
  -----------
  [AMDGPU] Take BUF instructions into account in mayAccessScratchThroughFlat (#170274)

BUF instructions can access the scratch address space, so
SIInsertWaitCnt needs to be able
to track the SCRATCH_WRITE_ACCESS event for such BUF instructions.

The release-vgprs.mir test had to be updated because BUF instructions
w/o a MMO are now
tracked as a SCRATCH_WRITE_ACCESS. I added a MMO that touches global to
keep the test result unchanged. I also added a couple of testcases with no MMO to test the corrected behavior.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications