[all-commits] [llvm/llvm-project] 7d0203: [AMDGPU] Prevent generation of unused SGPR IMPLICI...

[Chris Jackson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7d0203b39f62fa023d0cfd581fea9f0c8f4ac574
      https://github.com/llvm/llvm-project/commit/7d0203b39f62fa023d0cfd581fea9f0c8f4ac574
  Author: Chris Jackson <chris.jackson at amd.com>
  Date:   2025-08-27 (Wed, 27 Aug 2025)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
    M llvm/test/CodeGen/AMDGPU/ashr64_reduce_flags.ll
    M llvm/test/CodeGen/AMDGPU/buffer-intrinsic-mmo-type.ll
    M llvm/test/CodeGen/AMDGPU/change-scc-to-vcc.mir
    M llvm/test/CodeGen/AMDGPU/collapse-endcf.ll
    M llvm/test/CodeGen/AMDGPU/dag-preserve-disjoint-flag.ll
    M llvm/test/CodeGen/AMDGPU/div_i128.ll
    M llvm/test/CodeGen/AMDGPU/fix-crash-valu-hazard.ll
    M llvm/test/CodeGen/AMDGPU/fix-sgpr-copies-f16-fake16.mir
    M llvm/test/CodeGen/AMDGPU/fix-sgpr-copies-f16-gfx12-fake16.mir
    M llvm/test/CodeGen/AMDGPU/fix-sgpr-copies-f16-gfx12-true16.mir
    M llvm/test/CodeGen/AMDGPU/fix-sgpr-copies-f16-true16.mir
    M llvm/test/CodeGen/AMDGPU/fix-sgpr-copies-f16.mir
    M llvm/test/CodeGen/AMDGPU/fix-sgpr-copies.mir
    M llvm/test/CodeGen/AMDGPU/flat-atomic-fadd.f64.ll
    M llvm/test/CodeGen/AMDGPU/indirect-addressing-si.ll
    M llvm/test/CodeGen/AMDGPU/isel-amdgcn-cs-chain-intrinsic-w32.ll
    M llvm/test/CodeGen/AMDGPU/isel-amdgcn-cs-chain-intrinsic-w64.ll
    M llvm/test/CodeGen/AMDGPU/isel-amdgpu-cs-chain-cc.ll
    M llvm/test/CodeGen/AMDGPU/isel-amdgpu-cs-chain-preserve-cc.ll
    M llvm/test/CodeGen/AMDGPU/isel-whole-wave-functions.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.buffer.load.format.f16.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.buffer.load.format.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.buffer.load.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.buffer.store.format.f16.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.buffer.store.format.f32.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.buffer.store.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.ptr.buffer.load.format.f16.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.ptr.buffer.load.format.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.ptr.buffer.load.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.ptr.buffer.store.format.f16.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.ptr.buffer.store.format.f32.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.ptr.buffer.store.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.ptr.tbuffer.load.f16.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.ptr.tbuffer.load.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.ptr.tbuffer.store.f16.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.ptr.tbuffer.store.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.tbuffer.load.f16.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.tbuffer.load.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.tbuffer.store.f16.ll
    M llvm/test/CodeGen/AMDGPU/legalize-amdgcn.raw.tbuffer.store.ll
    M llvm/test/CodeGen/AMDGPU/legalize-soffset-mbuf.ll
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.update.dpp.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-lastuse.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-nontemporal.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-flat-volatile.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-nontemporal.ll
    M llvm/test/CodeGen/AMDGPU/memory-legalizer-global-volatile.ll
    M llvm/test/CodeGen/AMDGPU/mmra.ll
    M llvm/test/CodeGen/AMDGPU/move-to-valu-addsubu64.ll
    M llvm/test/CodeGen/AMDGPU/move-to-valu-lshlrev.mir
    M llvm/test/CodeGen/AMDGPU/move-to-valu-pseudo-scalar-trans-f16-fake16.ll
    M llvm/test/CodeGen/AMDGPU/move-to-valu-pseudo-scalar-trans.ll
    M llvm/test/CodeGen/AMDGPU/move-to-valu-vimage-vsample.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/mubuf-legalize-operands.mir
    M llvm/test/CodeGen/AMDGPU/phi-vgpr-input-moveimm.mir
    M llvm/test/CodeGen/AMDGPU/rem_i128.ll
    M llvm/test/CodeGen/AMDGPU/s_add_co_pseudo_lowering.mir
    M llvm/test/CodeGen/AMDGPU/sgpr-spills-split-regalloc.ll
    M llvm/test/CodeGen/AMDGPU/sgpr-to-vreg1-copy.mir
    M llvm/test/CodeGen/AMDGPU/shl64_reduce_flags.ll
    M llvm/test/CodeGen/AMDGPU/si-fix-sgpr-copies-copy-to-sgpr.mir
    M llvm/test/CodeGen/AMDGPU/si-fix-sgpr-copies.mir
    M llvm/test/CodeGen/AMDGPU/spill-vgpr-to-agpr-update-regscavenger.ll
    M llvm/test/CodeGen/AMDGPU/srl64_reduce_flags.ll
    M llvm/test/CodeGen/AMDGPU/trap-abis.ll
    M llvm/test/CodeGen/AMDGPU/vgpr-large-tuple-alloc-error.ll
    M llvm/test/CodeGen/AMDGPU/vgpr-spill-placement-issue61083.ll
    M llvm/test/CodeGen/AMDGPU/wwm-reserved-spill.ll
    M llvm/test/CodeGen/AMDGPU/wwm-reserved.ll

  Log Message:
  -----------
  [AMDGPU] Prevent generation of unused SGPR IMPLICIT_DEF assignments (#155241)

Dead VGPR->SGPR copies were converted to IMPLICIT_DEF assignments that
were unused. Prevent these from being created and update the numerous
affected tests.



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