Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: c20c54c79ae66f9d644a52d2331702492da083e2
https://github.com/WebKit/WebKit/commit/c20c54c79ae66f9d644a52d2331702492da083e2
Author: Keith Miller <keith_mil...@apple.com>
Date: 2023-05-15 (Mon, 15 May 2023)
Changed paths:
M Source/JavaScriptCore/assembler/MacroAssemblerARM64.h
M Source/JavaScriptCore/wasm/WasmAirIRGeneratorBase.h
M Source/JavaScriptCore/wasm/WasmB3IRGenerator.cpp
M Source/JavaScriptCore/wasm/WasmBBQJIT.cpp
Log Message:
-----------
ARM64 MacroAssembler should support populationCount functions
https://bugs.webkit.org/show_bug.cgi?id=256771
Reviewed by Yusuke Suzuki.
Now that we have vector instructions we should support emitting inline code for
population count. The new code matches the assembly emitted by GCC to do the
population count. Clang uses a different instruction to sum the vector that we
don't implement yet addlv vs GCC's addv. Although, those could be the synonyms
for the same instruction, I didn't check.
* Source/JavaScriptCore/assembler/ARM64Assembler.h:
* Source/JavaScriptCore/assembler/MacroAssemblerARM64.h:
(JSC::MacroAssemblerARM64::countPopulation32):
(JSC::MacroAssemblerARM64::countPopulation64):
(JSC::MacroAssemblerARM64::supportsCountPopulation):
* Source/JavaScriptCore/wasm/WasmAirIRGeneratorBase.h:
(JSC::Wasm::ExpressionType>::addI32Popcnt):
(JSC::Wasm::ExpressionType>::addI64Popcnt):
* Source/JavaScriptCore/wasm/WasmB3IRGenerator.cpp:
(JSC::Wasm::B3IRGenerator::addI32Popcnt):
(JSC::Wasm::B3IRGenerator::addI64Popcnt):
* Source/JavaScriptCore/wasm/WasmBBQJIT.cpp:
(JSC::Wasm::BBQJIT::addI32Popcnt):
(JSC::Wasm::BBQJIT::addI64Popcnt):
Canonical link: https://commits.webkit.org/264068@main
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