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Commit e7a184fc authored by Craig Topper's avatar Craig Topper
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[X86] Use movlps for i64 atomic stores on 32-targets with sse1. 

This is similar to using movd which we do for sse2 targets.

I've added a DAG combine for VEXTRACT_STORE to use SimplifyDemandedVectorElts
to clean up some artifacts from type legalization.
parent 1df947ab
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