[PATCH] D138585: [SLPVectorizer] Do Not Move Loads/Stores Beyond Stacksave/Stackrestore Boundaries

[Philip Reames via Phabricator via llvm-commits]

reames added a comment.

Can you explain why memory dependence wasn't enough to prevent the problematic reordering?  I'm a bit fuzzy on the details - it's been a while - but I though that stacksave and stackrestore were modeled as modifying all memory to prevent this reordering?


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