[PATCH] D87538: [VectorCombine] Don't vectorize scalar load under tsan

[Fangrui Song via Phabricator via llvm-commits]

MaskRay added a comment.

In D87538#2268840 <https://reviews.llvm.org/D87538#2268840>, @RKSimon wrote:

> Making general combines dependent on whether we're running sanitizers doesn't sound like a great idea - won't the impact on codegen make it trickier for sanitizers to correctly assist with identifying specific issues?

Searching for `Attribute::SanitizeThread` can reveal a few other places where certain optimizations are disabled.
For example, in Utils/VNCoercion.cpp getLoadLoadClobberFullWidthSize (testing whether a load can be widened), there is a very similar pattern.


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https://reviews.llvm.org/D87538