[all-commits] [llvm/llvm-project] c25293: [LegalizeVectorOps][RISCV] Don't promote VP_FABS/F...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c25293c6dd9a71b4655d1d6497ab8576c15e446e
      https://github.com/llvm/llvm-project/commit/c25293c6dd9a71b4655d1d6497ab8576c15e446e
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-08-30 (Fri, 30 Aug 2024)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
    M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vfabs-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vfneg-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vcopysign-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vfabs-vp.ll
    M llvm/test/CodeGen/RISCV/rvv/vfneg-vp.ll

  Log Message:
  -----------
  [LegalizeVectorOps][RISCV] Don't promote VP_FABS/FNEG/FCOPYSIGN. (#106659)

Promoting canonicalizes NaNs which changes the semantics. Bitcast to
integer and use logic ops instead.



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