[all-commits] [llvm/llvm-project] 310e79: [NVPTX] Avoid introducing unnecessary ProxyRegs an...

[Alex MacLean via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 310e79875752886a7713911e2a1ec14bc75bd4b3
      https://github.com/llvm/llvm-project/commit/310e79875752886a7713911e2a1ec14bc75bd4b3
  Author: Alex MacLean <amaclean at nvidia.com>
  Date:   2024-12-19 (Thu, 19 Dec 2024)

  Changed paths:
    M llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
    M llvm/lib/Target/NVPTX/NVPTXInstrInfo.td
    M llvm/lib/Target/NVPTX/NVPTXIntrinsics.td
    M llvm/test/CodeGen/NVPTX/atomics-sm70.ll
    M llvm/test/CodeGen/NVPTX/atomics-sm90.ll
    M llvm/test/CodeGen/NVPTX/bf16-instructions.ll
    M llvm/test/CodeGen/NVPTX/bf16x2-instructions.ll
    M llvm/test/CodeGen/NVPTX/chain-different-as.ll
    M llvm/test/CodeGen/NVPTX/cmpxchg.ll
    M llvm/test/CodeGen/NVPTX/compute-ptx-value-vts.ll
    M llvm/test/CodeGen/NVPTX/demote-vars.ll
    M llvm/test/CodeGen/NVPTX/extractelement.ll
    M llvm/test/CodeGen/NVPTX/f16x2-instructions.ll
    M llvm/test/CodeGen/NVPTX/fma-relu-contract.ll
    M llvm/test/CodeGen/NVPTX/fma-relu-fma-intrinsic.ll
    M llvm/test/CodeGen/NVPTX/fma-relu-instruction-flag.ll
    M llvm/test/CodeGen/NVPTX/i1-load-lower.ll
    M llvm/test/CodeGen/NVPTX/i128.ll
    M llvm/test/CodeGen/NVPTX/i16x2-instructions.ll
    M llvm/test/CodeGen/NVPTX/i8x4-instructions.ll
    M llvm/test/CodeGen/NVPTX/inline-asm-b128-test1.ll
    M llvm/test/CodeGen/NVPTX/inline-asm-b128-test2.ll
    M llvm/test/CodeGen/NVPTX/inline-asm-b128-test3.ll
    M llvm/test/CodeGen/NVPTX/math-intrins.ll
    M llvm/test/CodeGen/NVPTX/misched_func_call.ll
    M llvm/test/CodeGen/NVPTX/pr13291-i1-store.ll
    M llvm/test/CodeGen/NVPTX/reg-types.ll
    M llvm/test/CodeGen/NVPTX/unfold-masked-merge-vector-variablemask.ll
    M llvm/test/CodeGen/NVPTX/vaargs.ll
    M llvm/test/CodeGen/NVPTX/variadics-backend.ll
    M llvm/test/CodeGen/NVPTX/vector-returns.ll

  Log Message:
  -----------
  [NVPTX] Avoid introducing unnecessary ProxyRegs and Movs in ISel (#120486)

Avoid introducing `ProxyReg` and `MOV` nodes during ISel when lowering
`bitconvert` or similar operations. These nodes are all erased by a
later pass but not introducing them in the first place is simpler and
likely saves compile time.

Also remove redundant `MOV` instruction definitions.



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