[all-commits] [llvm/llvm-project] 26ebe1: [SLP]Fix PR88834: check if unsigned arg can be tru...

[Alexey Bataev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 26ebe16d78b22329d602db0398ce163ad610b0dc
      https://github.com/llvm/llvm-project/commit/26ebe16d78b22329d602db0398ce163ad610b0dc
  Author: Alexey Bataev <a.bataev at outlook.com>
  Date:   2024-04-16 (Tue, 16 Apr 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
    M llvm/test/Transforms/SLPVectorizer/RISCV/smax-unsigned-operand.ll

  Log Message:
  -----------
  [SLP]Fix PR88834: check if unsigned arg can be trunced, being used in smax/smin intrinsics.

Need to check that unsigned argument can be safely used in smax/smin
intrinsics by checking if at least single sign bit is cleared, otherwise
its value may be treated as negative instead of positive.



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