Phoebe Wang e03d216c28 [X86] Use bit test instructions to optimize some logic atomic operations ...

This is to match GCC's optimizations: https://gcc.godbolt.org/z/3odh9e7WE

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D120199

2022-03-01 09:57:08 +08:00

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