Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 1b46b208061c4dbf3f8514b88d68d53bf124eb90
https://github.com/WebKit/WebKit/commit/1b46b208061c4dbf3f8514b88d68d53bf124eb90
Author: Yusuke Suzuki <[email protected]>
Date: 2026-09-04 (Fri, 04 Sep 2026)
Changed paths:
M Source/JavaScriptCore/wasm/WasmConstExprGenerator.cpp
M Source/JavaScriptCore/wasm/WasmConstExprGenerator.h
M Source/JavaScriptCore/wasm/WasmModuleInformation.h
M Source/JavaScriptCore/wasm/WasmOperationsInlines.h
M Source/JavaScriptCore/wasm/WasmSectionParser.cpp
M Source/JavaScriptCore/wasm/WasmTable.cpp
M Source/JavaScriptCore/wasm/WasmTypeDefinition.h
M Source/JavaScriptCore/wasm/js/JSWebAssemblyStruct.cpp
Log Message:
-----------
[JSC] Optimize Wasm globals initialization related code
https://bugs.webkit.org/show_bug.cgi?id=323465
rdar://186697890
Reviewed by Yijia Huang.
This patch optimizes Wasm globals initialization related code,
1. constant expression validator should collect maxStackHeight. So we
can use this when evaluating constant expression.
2. Wasm array / struct are initialized with zeros. So we should set a
new value only when it is not zero (jsNull() for example).
* Source/JavaScriptCore/wasm/WasmConstExprGenerator.cpp:
(JSC::Wasm::ConstExprInterpreter::run):
(JSC::Wasm::ConstExprInterpreter::createNewArray):
(JSC::Wasm::ConstExprInterpreter::createNewStruct):
(JSC::Wasm::ConstExprGenerator::maxStackHeight const):
(JSC::Wasm::ConstExprGenerator::didParseOpcode):
(JSC::Wasm::parseExtendedConstExpr):
(JSC::Wasm::evaluateExtendedConstExpr):
* Source/JavaScriptCore/wasm/WasmConstExprGenerator.h:
* Source/JavaScriptCore/wasm/WasmModuleInformation.h:
* Source/JavaScriptCore/wasm/WasmOperationsInlines.h:
(JSC::Wasm::structNew):
* Source/JavaScriptCore/wasm/WasmSectionParser.cpp:
(JSC::Wasm::SectionParser::parseInitExpr):
* Source/JavaScriptCore/wasm/WasmTable.cpp:
(JSC::Wasm::FuncRefTable::FuncRefTable):
* Source/JavaScriptCore/wasm/WasmTypeDefinition.h:
* Source/JavaScriptCore/wasm/js/JSWebAssemblyStruct.cpp:
(JSC::JSWebAssemblyStruct::get const):
(JSC::JSWebAssemblyStruct::set):
Canonical link: https://commits.webkit.org/320548@main
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