[all-commits] [llvm/llvm-project] b1bf95: ReduxWidth check for 0 (#123257)

[George Chaltas via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b1bf95c081297305b2c9810ff04a9dac7216b434
      https://github.com/llvm/llvm-project/commit/b1bf95c081297305b2c9810ff04a9dac7216b434
  Author: George Chaltas <george.chaltas at intel.com>
  Date:   2025-01-17 (Fri, 17 Jan 2025)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp

  Log Message:
  -----------
  ReduxWidth check for 0 (#123257)

Added assert to check for underflow of ReduxWidth

	modified:   llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp


Source code analysis flagged the operation (ReduxWwidth - 1) as
potential underflow, since ReduxWidth is unsigned.
Realize that this should never happen if everything is working right,
but added an assert to check for it just in case.



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