[all-commits] [llvm/llvm-project] 91a205: [AArch64][SVE] Instcombine ptrue(all) to splat(i1)...

[Matthew Devereau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 91a205653e8fa5a338c985b9a9dbaaaec62e3475
      https://github.com/llvm/llvm-project/commit/91a205653e8fa5a338c985b9a9dbaaaec62e3475
  Author: Matthew Devereau <matthew.devereau at arm.com>
  Date:   2025-04-13 (Sun, 13 Apr 2025)

  Changed paths:
    M clang/test/CodeGen/AArch64/sve-acle-__ARM_FEATURE_SVE_VECTOR_OPERATORS.c
    M clang/test/CodeGen/AArch64/sve-intrinsics/acle_sve_rdffr.c
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    M llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-abs-srshl.ll
    M llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-comb-all-active-lanes-cvt.ll
    M llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-loadstore.ll
    M llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-opts-cmpne.ll
    M llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-strictfp.ll
    M llvm/test/Transforms/InstCombine/AArch64/sve-intrinsics-combine-to-u-forms.ll
    M llvm/test/Transforms/InstCombine/AArch64/sve-intrinsics-ptest.ll
    M llvm/test/Transforms/InstCombine/AArch64/sve-intrinsics-rdffr-predication.ll

  Log Message:
  -----------
  [AArch64][SVE] Instcombine ptrue(all) to splat(i1) (#135016)

SVE Operations such as predicated loads become canonicalized to LLVM
masked loads, and doing the same for ptrue(all) to splat(1) creates
further optimization opportunities from generic LLVM IR passes.



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