[webkit-changes] [WebKit/WebKit] df8eda: [JSC] Use MoveZeroToDouble / MoveZeroToFloat in Ai...

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: df8eda6a623bc5b34ebeb991573dc1f61917ad24
      https://github.com/WebKit/WebKit/commit/df8eda6a623bc5b34ebeb991573dc1f61917ad24
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2022-12-18 (Sun, 18 Dec 2022)

  Changed paths:
    M Source/JavaScriptCore/assembler/MacroAssemblerARM64.h
    M Source/JavaScriptCore/assembler/MacroAssemblerARMv7.h
    M Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h
    M Source/JavaScriptCore/b3/air/AirOpcode.opcodes
    M Source/JavaScriptCore/wasm/WasmAirIRGenerator64.cpp

  Log Message:
  -----------
  [JSC] Use MoveZeroToDouble / MoveZeroToFloat in AirIRGenerator
https://bugs.webkit.org/show_bug.cgi?id=249552
rdar://103490579

Reviewed by Mark Lam.

This is silly that we are using Move32ToFloat / Move32ToDouble to
generate zero value Double / Float in AirIRGenerator. We should just
use MoveZeroToDouble. And this patch adds MoveZeroToFloat too.

* Source/JavaScriptCore/assembler/MacroAssemblerARM64.h:
(JSC::MacroAssemblerARM64::moveZeroToFloat):
* Source/JavaScriptCore/assembler/MacroAssemblerARMv7.h:
(JSC::MacroAssemblerARMv7::moveZeroToFloat):
(JSC::MacroAssemblerARMv7::loadFloat):
* Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h:
(JSC::MacroAssemblerX86Common::moveZeroToFloat):
* Source/JavaScriptCore/b3/air/AirOpcode.opcodes:
* Source/JavaScriptCore/wasm/WasmAirIRGenerator64.cpp:
(JSC::Wasm::AirIRGenerator64::emitZeroInitialize):
(JSC::Wasm::AirIRGenerator64::emitMaterializeConstant):

Canonical link: https://commits.webkit.org/258063@main