[PATCH] D76332: Fix MSan false positive due to select folding.
Sanjay Patel via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Mar 18 13:02:13 PDT 2020
spatel added a comment.
In D76332#1929671 <https://reviews.llvm.org/D76332#1929671>, @eugenis wrote:
> Interesting. Poison semantics are very similar to MemorySanitizer model.
> Should I remove TryToUnfoldSelectInCurrBB completely? I don't see how it can be saved.
I'm looking at a similar question with D76153 <https://reviews.llvm.org/D76153>. Without 'freeze', I suspect we're going to hit perf regressions. But AFAIK, nobody has measured those.
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https://reviews.llvm.org/D76332/new/
https://reviews.llvm.org/D76332
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