| commit | 70a389ac8778064e470a95412d40e17f97898142 | [log] [tgz] |
|---|---|---|
| author | Andreas Haas <ahaas@chromium.org> | Thu Oct 22 09:38:50 2020 |
| committer | Commit Bot <commit-bot@chromium.org> | Thu Oct 22 19:09:57 2020 |
| tree | c134b2a78d999bbf999bb2921a26a36c42d30afe | |
| parent | d9829b92a858dbaa4e214521f1f2d0d0ff98dd80 [diff] |
[wasm][liftoff][ia32] Fix register allocation of CompareExchange
The register that holds the {new_value} for the AtomicCompareExchange8U
has to be a byte register on ia32. There was code to guarantee that, but
after that code there was code that frees the {eax} register, and that
code moved the {new_value} to a different register again. With this CL
we first free {eax}, and then find a byte register for the {new_value}.
R=clemensb@chromium.org
Bug: chromium:1140549
Change-Id: I1679f3f9ab26c5416ea251c7925366ff43336d85
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2491031
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70721}
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