[all-commits] [llvm/llvm-project] 4f90e7: [AMDGPU] Do not count implicit VGPRs in SIInsertWa...

[Stanislav Mekhanoshin via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4f90e75bdc156d2630da525eb74d00611753c706
      https://github.com/llvm/llvm-project/commit/4f90e75bdc156d2630da525eb74d00611753c706
  Author: Stanislav Mekhanoshin <rampitec at users.noreply.github.com>
  Date:   2024-09-25 (Wed, 25 Sep 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/image-waterfall-loop-O0.ll
    M llvm/test/CodeGen/AMDGPU/collapse-endcf.ll
    M llvm/test/CodeGen/AMDGPU/div_i128.ll
    M llvm/test/CodeGen/AMDGPU/indirect-addressing-si.ll
    M llvm/test/CodeGen/AMDGPU/load-global-i16.ll
    M llvm/test/CodeGen/AMDGPU/load-global-i32.ll
    M llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands-non-ptr-intrinsics.ll
    M llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands.ll
    M llvm/test/CodeGen/AMDGPU/rem_i128.ll
    M llvm/test/CodeGen/AMDGPU/spill-wait.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-agpr.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt.mir

  Log Message:
  -----------
  [AMDGPU] Do not count implicit VGPRs in SIInsertWaitcnts (#109049)

When generating waitcounts before a use or def skip VGPRs. We never have
a real implicit VGPR operands on memory instructions, it is only for
super-reg liveness accounting.

Some other instructions (MOVRELS as an example) may have real implicit
VGPR uses though.

This is less then ideal but most of the problems observed with spills.



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