Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 3d5ca0a9487692276e62ca70fa01a426bad06aeb
https://github.com/WebKit/WebKit/commit/3d5ca0a9487692276e62ca70fa01a426bad06aeb
Author: Marcus Plutowski <[email protected]>
Date: 2024-04-09 (Tue, 09 Apr 2024)
Changed paths:
A JSTests/wasm/stress/remainder-by-constant-plusminus-1.js
M Source/JavaScriptCore/wasm/WasmBBQJIT64.h
Log Message:
-----------
Fix BBQ JIT handling of remu(x, -1)
https://bugs.webkit.org/show_bug.cgi?id=272346
rdar://121010056
Reviewed by Yusuke Suzuki.
The optimization emitModOrDiv was zeroing out the result whenever the
modulus was -1; this is only valid for signed operations, as for
unsigned modulus the above is equivalent to % UINT~_MAX, which does not
generally equal 0.
* JSTests/wasm/stress/remainder-by-constant-plusminus-1.js: Added.
(async test):
* Source/JavaScriptCore/wasm/WasmBBQJIT64.h:
(JSC::Wasm::BBQJITImpl::BBQJIT::emitModOrDiv):
Canonical link: https://commits.webkit.org/277263@main
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