[all-commits] [llvm/llvm-project] b81d5e: [InstCombine] Fold shuffles through all trivially ...

[Luke Lau via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b81d5e06c7cba8c9f1f5380daed4b9ee139214ba
      https://github.com/llvm/llvm-project/commit/b81d5e06c7cba8c9f1f5380daed4b9ee139214ba
  Author: Luke Lau <luke at igalia.com>
  Date:   2025-06-13 (Fri, 13 Jun 2025)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
    M llvm/test/Transforms/InstCombine/abs-1.ll
    M llvm/test/Transforms/InstCombine/fma.ll
    M llvm/test/Transforms/InstCombine/minmax-intrinsics.ll
    M llvm/test/Transforms/InstCombine/powi.ll
    M llvm/test/Transforms/InstCombine/scmp.ll
    M llvm/test/Transforms/InstCombine/sqrt.ll
    M llvm/test/Transforms/SLPVectorizer/AMDGPU/add_sub_sat-inseltpoison.ll
    M llvm/test/Transforms/SLPVectorizer/AMDGPU/add_sub_sat.ll
    M llvm/test/Transforms/SLPVectorizer/X86/alternate-calls-inseltpoison.ll
    M llvm/test/Transforms/SLPVectorizer/X86/alternate-calls.ll

  Log Message:
  -----------
  [InstCombine] Fold shuffles through all trivially vectorizable intrinsics (#141979)

This addresses a TODO in foldShuffledIntrinsicOperands to use
isTriviallyVectorizable instead of a hardcoded list of intrinsics, which
in turn allows more intriniscs to be scalarized by VectorCombine.

>From what I can tell every intrinsic here should be speculatable so an
assertion was added.

Because this enables intrinsics like abs which have a scalar operand, we
need to also check isVectorIntrinsicWithScalarOpAtArg.



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