Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 95959f01b05f81109a86ed22e692ed2ee8399758
https://github.com/WebKit/WebKit/commit/95959f01b05f81109a86ed22e692ed2ee8399758
Author: Sosuke Suzuki <[email protected]>
Date: 2026-05-07 (Thu, 07 May 2026)
Changed paths:
M Source/JavaScriptCore/wasm/WasmBBQJIT.h
M Source/JavaScriptCore/wasm/WasmBBQJIT64.cpp
M Source/JavaScriptCore/wasm/WasmOMGIRGenerator.cpp
Log Message:
-----------
[JSC] Wasm Memory64 atomic ops truncate the immediate offset to 32 bits in
BBQ and OMG
https://bugs.webkit.org/show_bug.cgi?id=314253
Reviewed by Keith Miller.
312713@main widened the immediate offset of Wasm atomic ops to uint64_t,
but a few inner emitter helpers were left with a uint32_t parameter,
silently truncating the offset for Memory64. Widen those to uint64_t.
* Source/JavaScriptCore/wasm/WasmBBQJIT.h:
* Source/JavaScriptCore/wasm/WasmBBQJIT64.cpp:
(JSC::Wasm::BBQJITImpl::BBQJIT::emitAtomicBinaryRMWOp):
(JSC::Wasm::BBQJITImpl::BBQJIT::emitAtomicCompareExchange):
* Source/JavaScriptCore/wasm/WasmOMGIRGenerator.cpp:
(JSC::Wasm::OMGIRGenerator::fixupPointerPlusOffsetForAtomicOps):
Canonical link: https://commits.webkit.org/312834@main
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