[all-commits] [llvm/llvm-project] b634e0: [SLP][REVEC] Fix false assumption of the source fo...

[Han-Kuan Chen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b634e057ddecc41dce046887d0f0854fed305374
      https://github.com/llvm/llvm-project/commit/b634e057ddecc41dce046887d0f0854fed305374
  Author: Han-Kuan Chen <hankuan.chen at sifive.com>
  Date:   2024-07-18 (Thu, 18 Jul 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    A llvm/test/Transforms/SLPVectorizer/revec-fix-99411.ll

  Log Message:
  -----------
  [SLP][REVEC] Fix false assumption of the source for castToScalarTyElem. (#99424)

The argument V may come from adjustExtracts, which is the vector operand
of ExtractElementInst. In addition, it is not existed in getTreeEntry.

The vector operand of ExtractElementInst may have a type of <1 x Ty>,
ensuring that the number of elements in ScalarTy and VecTy are equal.

reference: https://github.com/llvm/llvm-project/issues/99411



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