[all-commits] [llvm/llvm-project] 2546ae: [SLP][REVEC] Fix the number of elements in the mas...

[Han-Kuan Chen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2546ae4ed09ff69274c184ae7e98f2aa72e7e7f7
      https://github.com/llvm/llvm-project/commit/2546ae4ed09ff69274c184ae7e98f2aa72e7e7f7
  Author: Han-Kuan Chen <hankuan.chen at sifive.com>
  Date:   2024-12-13 (Fri, 13 Dec 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/RISCV/revec.ll

  Log Message:
  -----------
  [SLP][REVEC] Fix the number of elements in the mask of a ShuffleVectorInst is not a power of 2. (#119689)

The following shufflevector should not be vectorized when
slp-vectorize-non-power-of-2 is enabled.

shufflevector <8 x float> %1, <8 x float> poison, <3 x i32> <i32 0, i32
1, i32 2>
shufflevector <8 x float> %1, <8 x float> poison, <3 x i32> <i32 4, i32
5, i32 6>



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