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Sigurd Schneider authored
This reverts commit a8fccd95. Reason for revert: We'd need to investigate on a range of hardware generations to assess if this is a good change; in general new hardware (intel 9th gen / amd ryzen) seems to be happier with xchg, while older hardware is not happy with xchg. Original change's description: > [codegen] Swap using xchgq rather than three movq on x64 > > R=sigurds@chromium.org > > Change-Id: Icd6e66b9bb23ca0dbf9fc5fe5c737a0bc3056a89 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1678359 > Auto-Submit: Thibaud Michaud <thibaudm@chromium.org> > Reviewed-by: Sigurd Schneider <sigurds@chromium.org> > Commit-Queue: Sigurd Schneider <sigurds@chromium.org> > Cr-Commit-Position: refs/heads/master@{#62386} TBR=sigurds@chromium.org,thibaudm@chromium.org Change-Id: I8dc84d0899e6cbeccbca2cc557da9fb97c8d4bc8 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1679495Reviewed-by: Sigurd Schneider <sigurds@chromium.org> Commit-Queue: Sigurd Schneider <sigurds@chromium.org> Cr-Commit-Position: refs/heads/master@{#62405}
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