Ulrich Weigand 0f1de04979 [SystemZ] Custom-expand ATOMIC_CMP_AND_SWAP_WITH_SUCCESS ...

The SystemZ compare-and-swap instructions already provide the "success"
indication via a condition-code value, so the default expansion of those
operations generates an unnecessary extra comparsion.

llvm-svn: 314428

2017-09-28 16:22:54 +00:00

1.3 KiB

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