[webkit-reviews] review granted: [Bug 218954] [JSC] Add wasm atomics instructions : [Attachment 414795] Patch
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon Nov 23 09:27:33 PST 2020
Filip Pizlo <fpizlo at apple.com> has granted Yusuke Suzuki <ysuzuki at apple.com>'s
request for review:
Bug 218954: [JSC] Add wasm atomics instructions
https://bugs.webkit.org/show_bug.cgi?id=218954
Attachment 414795: Patch
https://bugs.webkit.org/attachment.cgi?id=414795&action=review
--- Comment #13 from Filip Pizlo <fpizlo at apple.com> ---
Comment on attachment 414795
--> https://bugs.webkit.org/attachment.cgi?id=414795
Patch
View in context: https://bugs.webkit.org/attachment.cgi?id=414795&action=review
Super nice!
> Source/JavaScriptCore/b3/B3Width.h:116
> + return 1U << static_cast<unsigned>(width);
Slight preference for this being a switch. It's clearer and less sensitive to
the enum being messed with.
> Source/JavaScriptCore/b3/testb3_8.cpp:593
> + // AtomicXchg can be lowered to "xchg" without "lock", and this
is OK since "lock" signal is asserted for "xchg" by default.
Oh really? I thought that xchg only created a fence by default, but not the
lock.
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