[webkit-changes] [WebKit/WebKit] 616189: [JSC] Inline DoubleToInt52 in DFG and FTL

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 6161896d5e35db2f2868932d46c9c77c67af66b9
      https://github.com/WebKit/WebKit/commit/6161896d5e35db2f2868932d46c9c77c67af66b9
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2023-06-14 (Wed, 14 Jun 2023)

  Changed paths:
    M Source/JavaScriptCore/assembler/testmasm.cpp
    M Source/JavaScriptCore/dfg/DFGOperations.cpp
    M Source/JavaScriptCore/dfg/DFGOperations.h
    M Source/JavaScriptCore/dfg/DFGSpeculativeJIT64.cpp
    M Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp
    M Source/JavaScriptCore/jit/AssemblyHelpers.h

  Log Message:
  -----------
  [JSC] Inline DoubleToInt52 in DFG and FTL
https://bugs.webkit.org/show_bug.cgi?id=258054
rdar://110743219

Reviewed by Justin Michaud.

This patch inlines DoubleToInt52 operation in DFG and FTL.
This operation is frequently invoked, and it can be implemented relatively cheaply in JIT.

* Source/JavaScriptCore/assembler/testmasm.cpp:
(JSC::testBranchConvertDoubleToInt52):
* Source/JavaScriptCore/dfg/DFGOperations.cpp:
* Source/JavaScriptCore/dfg/DFGOperations.h:
* Source/JavaScriptCore/dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
(JSC::DFG::SpeculativeJIT::convertAnyInt):
(JSC::DFG::SpeculativeJIT::speculateDoubleRepAnyInt):
* Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp:
(JSC::FTL::DFG::LowerDFGToB3::compileInt52Rep):
(JSC::FTL::DFG::LowerDFGToB3::compileCompareStrictEq):
* Source/JavaScriptCore/jit/AssemblyHelpers.h:
(JSC::AssemblyHelpers::branchConvertDoubleToInt52):

Canonical link: https://commits.webkit.org/265155@main