[all-commits] [llvm/llvm-project] ea4cc2: [BasicAA] Remove NSW flags when merging scales (#6...

[Yingwei Zheng via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ea4cc2007efeaf14b8a07b967cb0c570e5b59d7c
      https://github.com/llvm/llvm-project/commit/ea4cc2007efeaf14b8a07b967cb0c570e5b59d7c
  Author: Yingwei Zheng <dtcxzyw2333 at gmail.com>
  Date:   2023-10-16 (Mon, 16 Oct 2023)

  Changed paths:
    M llvm/lib/Analysis/BasicAliasAnalysis.cpp
    M llvm/test/Analysis/BasicAA/pr69096.ll

  Log Message:
  -----------
  [BasicAA] Remove NSW flags when merging scales (#69122)

When merging scales of `LinearExpression` that have common index
variables, we cannot guarantee the NSW flag still applies to the merged
expression.

Fixes #69096.