[PATCH] D116375: [X86] Use bit test instructions to optimize some logic atomic operations

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

pre-commit the tests and rebase so this patch shows the codegen diff?



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Comment at: llvm/lib/Target/X86/X86ISelLowering.h:1647
+    TargetLoweringBase::AtomicExpansionKind
+    shouldExpandAtomicLogRMWInIR(AtomicRMWInst *AI) const;
 
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Log?


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  https://reviews.llvm.org/D116375/new/

https://reviews.llvm.org/D116375