[all-commits] [llvm/llvm-project] d394d1: [AMDGPU][MIRFormatter] Printer & parser for S_WAIT...

[vporpo via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d394d153fbc6e686107531cb1943925823b648f5
      https://github.com/llvm/llvm-project/commit/d394d153fbc6e686107531cb1943925823b648f5
  Author: vporpo <vasileios.porpodas at amd.com>
  Date:   2026-04-28 (Tue, 28 Apr 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUMIRFormatter.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUMIRFormatter.h
    M llvm/test/CodeGen/AMDGPU/asyncmark-waitcnt.mir
    M llvm/test/CodeGen/AMDGPU/branch-relax-indirect-branch.mir
    M llvm/test/CodeGen/AMDGPU/branch-relax-no-terminators.mir
    M llvm/test/CodeGen/AMDGPU/call-waw-waitcnt.mir
    M llvm/test/CodeGen/AMDGPU/force-wait-after-always-gds.mir
    M llvm/test/CodeGen/AMDGPU/gcn-reg-pressure-true16-integer-overflow.mir
    M llvm/test/CodeGen/AMDGPU/gfx11-sgpr-hazard-latency.mir
    M llvm/test/CodeGen/AMDGPU/hazard-shift64.mir
    M llvm/test/CodeGen/AMDGPU/hazard.mir
    M llvm/test/CodeGen/AMDGPU/hazards-gfx950.mir
    M llvm/test/CodeGen/AMDGPU/insert-waitcnts-callee.mir
    M llvm/test/CodeGen/AMDGPU/insert-waitcnts-crash.ll
    M llvm/test/CodeGen/AMDGPU/insert-waitcnts-exp.mir
    M llvm/test/CodeGen/AMDGPU/insert-waitcnts-fence-soft.mir
    M llvm/test/CodeGen/AMDGPU/insert-waitcnts-hang.mir
    M llvm/test/CodeGen/AMDGPU/insert-waitcnts-merge.ll
    M llvm/test/CodeGen/AMDGPU/lds-direct-hazards-gfx11.mir
    M llvm/test/CodeGen/AMDGPU/lds-dma-waitcnt.mir
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ds.gws.barrier-bundle.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ds.gws.barrier-fastregalloc.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-atomic-insert-end.mir
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-multiple-mem-operands-atomics.mir
    M llvm/test/CodeGen/AMDGPU/post-ra-sched-kill-bundle-use-inst.mir
    M llvm/test/CodeGen/AMDGPU/release-vgprs.mir
    M llvm/test/CodeGen/AMDGPU/scheduler-handle-move-bundle.mir
    M llvm/test/CodeGen/AMDGPU/skip-branch-taildup-ret.mir
    M llvm/test/CodeGen/AMDGPU/smem-war-hazard.mir
    M llvm/test/CodeGen/AMDGPU/spill-wait.mir
    M llvm/test/CodeGen/AMDGPU/statepoint-insert-waitcnts.mir
    M llvm/test/CodeGen/AMDGPU/transform-block-with-return-to-epilog.ll
    M llvm/test/CodeGen/AMDGPU/unpack-non-coissue-insts-post-ra-scheduler.mir
    M llvm/test/CodeGen/AMDGPU/valu-mask-write-hazard.mir
    M llvm/test/CodeGen/AMDGPU/vccz-corrupt-bug-workaround.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-agpr.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-back-edge-loop.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-bvh.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-debug-non-first-terminators.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-debug.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-loop-irreducible.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-loop-single-basic-block.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-meta-instructions.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-no-redundant.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-overflow.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-permute.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-preexisting-vscnt.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-preexisting.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-sample-out-order.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-sample-waw.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-trailing.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-vmcnt-loop.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-vmem-waw.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-vscnt.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt-wcg-attributes.mir
    M llvm/test/CodeGen/AMDGPU/waitcnt.mir
    A llvm/test/CodeGen/MIR/AMDGPU/s_waitcnt-errors.mir
    A llvm/test/CodeGen/MIR/AMDGPU/s_waitcnt.mir
    A llvm/test/CodeGen/MIR/AMDGPU/s_waitcnt_missing_operand_crash.mir

  Log Message:
  -----------
  [AMDGPU][MIRFormatter] Printer & parser for S_WAITCNT human-readable mask (#193895)

This patch implements a printer and parser for the S_WAITCNT mask. It
prints the mask in a human-readable format, showing the counter values
like `Vmcnt_<NUM>_Expcnt_<NUM>_Lgkmcnt_<NUM>`.

The format matches the printing style of S_WAITCNT_DEPCTR. For example:
```
 S_WAITCNT .Vmcnt_0_Expcnt_0_Lgkmcnt_0
 S_WAITCNT .Expcnt_0
 S_WAITCNT .AllOff
```
Counters at their maximum value (meaning "don't wait") are omitted. When
all counters are at max, `.AllOff` is printed.

Co-Authored-By: Claude Opus 4 <noreply at anthropic.com>



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