[webkit-changes] [WebKit/WebKit] 557d5c: [JSC] Remove unmaintained MIPS support for JIT/LLInt

[jjgriego]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 557d5c09eaa8b73f68df370a2f3aef21523e3624
      https://github.com/WebKit/WebKit/commit/557d5c09eaa8b73f68df370a2f3aef21523e3624
  Author: Joseph Griego <jgriego at igalia.com>
  Date:   2024-01-10 (Wed, 10 Jan 2024)

  Changed paths:
    M Source/JavaScriptCore/API/tests/ExecutionTimeLimitTest.cpp
    M Source/JavaScriptCore/CMakeLists.txt
    M Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj
    M Source/JavaScriptCore/Sources.txt
    M Source/JavaScriptCore/assembler/CPU.h
    M Source/JavaScriptCore/assembler/LinkBuffer.cpp
    R Source/JavaScriptCore/assembler/MIPSAssembler.h
    R Source/JavaScriptCore/assembler/MIPSRegisters.h
    M Source/JavaScriptCore/assembler/MacroAssembler.h
    R Source/JavaScriptCore/assembler/MacroAssemblerMIPS.cpp
    R Source/JavaScriptCore/assembler/MacroAssemblerMIPS.h
    M Source/JavaScriptCore/assembler/MaxFrameExtentForSlowPathCall.h
    M Source/JavaScriptCore/assembler/PerfLog.cpp
    M Source/JavaScriptCore/assembler/ProbeContext.cpp
    M Source/JavaScriptCore/assembler/ProbeContext.h
    M Source/JavaScriptCore/assembler/RegisterInfo.h
    M Source/JavaScriptCore/assembler/testmasm.cpp
    M Source/JavaScriptCore/bytecode/InlineAccess.h
    M Source/JavaScriptCore/bytecode/InlineCacheCompiler.cpp
    M Source/JavaScriptCore/dfg/DFGSpeculativeJIT.h
    M Source/JavaScriptCore/disassembler/CapstoneDisassembler.cpp
    M Source/JavaScriptCore/jit/AssemblyHelpers.h
    M Source/JavaScriptCore/jit/CCallHelpers.h
    M Source/JavaScriptCore/jit/ExecutableAllocator.h
    M Source/JavaScriptCore/jit/FPRInfo.h
    M Source/JavaScriptCore/jit/GPRInfo.h
    M Source/JavaScriptCore/jit/RegisterSet.cpp
    M Source/JavaScriptCore/jit/ThunkGenerators.cpp
    M Source/JavaScriptCore/llint/LLIntOfflineAsmConfig.h
    M Source/JavaScriptCore/llint/LLIntThunks.cpp
    M Source/JavaScriptCore/llint/LowLevelInterpreter.asm
    M Source/JavaScriptCore/llint/LowLevelInterpreter32_64.asm
    M Source/JavaScriptCore/offlineasm/backends.rb
    R Source/JavaScriptCore/offlineasm/mips.rb
    M Source/JavaScriptCore/runtime/VM.h
    M Source/JavaScriptCore/yarr/YarrJIT.cpp
    M Source/JavaScriptCore/yarr/YarrJITRegisters.h
    M Source/WTF/wtf/PlatformEnable.h

  Log Message:
  -----------
  [JSC] Remove unmaintained MIPS support for JIT/LLInt
https://bugs.webkit.org/show_bug.cgi?id=267347

Reviewed by Yusuke Suzuki.

Igalia can't commit to supporting MIPS support for the JIT and LLInt anymore
(and the bots are no longer running)--switch the MIPS build over to CLoop and
remove the relevant JIT-only code. Note this doesn't remove _all_ references to
CPU(MIPS)--there's still some, e.g. in heap/RegisterState; but this seems
necessary even using CLoop and no JIT.

* Source/JavaScriptCore/API/tests/ExecutionTimeLimitTest.cpp:
(testExecutionTimeLimit):
* Source/JavaScriptCore/assembler/CPU.h:
(JSC::prologueStackPointerDelta):
(JSC::isMIPS): Deleted.
* Source/JavaScriptCore/assembler/LinkBuffer.cpp:
(JSC::LinkBuffer::linkCode):
* Source/JavaScriptCore/assembler/MIPSAssembler.h: Removed.
* Source/JavaScriptCore/assembler/MIPSRegisters.h: Removed.
* Source/JavaScriptCore/assembler/MacroAssembler.h:
* Source/JavaScriptCore/assembler/MacroAssemblerMIPS.cpp: Removed.
* Source/JavaScriptCore/assembler/MacroAssemblerMIPS.h: Removed.
* Source/JavaScriptCore/assembler/MaxFrameExtentForSlowPathCall.h:
* Source/JavaScriptCore/assembler/PerfLog.cpp:
* Source/JavaScriptCore/assembler/ProbeContext.cpp:
(JSC::Probe::executeJSCJITProbe):
* Source/JavaScriptCore/assembler/ProbeContext.h:
(JSC::Probe::CPUState::pc):
(JSC::Probe::CPUState::fp):
(JSC::Probe::CPUState::sp):
* Source/JavaScriptCore/assembler/RegisterInfo.h:
* Source/JavaScriptCore/assembler/testmasm.cpp:
(JSC::isSpecialGPR):
(JSC::testProbePreservesGPRS):
(JSC::testProbeModifiesStackPointer):
(JSC::testProbeModifiesStackValues):
* Source/JavaScriptCore/bytecode/InlineAccess.h:
(JSC::InlineAccess::sizeForPropertyAccess):
(JSC::InlineAccess::sizeForPropertyReplace):
(JSC::InlineAccess::sizeForLengthAccess):
* Source/JavaScriptCore/bytecode/InlineCacheCompiler.cpp:
(JSC::InlineCacheCompiler::emitDataICPrologue):
* Source/JavaScriptCore/dfg/DFGSpeculativeJIT.h:
(JSC::DFG::SpeculativeJIT::prepareForExternalCall):
* Source/JavaScriptCore/disassembler/CapstoneDisassembler.cpp:
(JSC::tryToDisassemble):
* Source/JavaScriptCore/jit/AssemblyHelpers.h:
* Source/JavaScriptCore/jit/CCallHelpers.h:
(JSC::CCallHelpers::setupArgumentsImpl):
(JSC::CCallHelpers::prepareForTailCallSlow):
(JSC::CCallHelpers::setupStubCrossArgs): Deleted.
* Source/JavaScriptCore/jit/ExecutableAllocator.h:
* Source/JavaScriptCore/jit/FPRInfo.h:
* Source/JavaScriptCore/jit/GPRInfo.h:
(JSC::PreferredArgumentImpl::preferredArgumentJSR):
* Source/JavaScriptCore/jit/RegisterSet.cpp:
(JSC::RegisterSetBuilder::macroClobberedGPRs):
(JSC::RegisterSetBuilder::macroClobberedFPRs):
(JSC::RegisterSetBuilder::vmCalleeSaveRegisters):
(JSC::RegisterSetBuilder::llintBaselineCalleeSaveRegisters):
(JSC::RegisterSetBuilder::dfgCalleeSaveRegisters):
* Source/JavaScriptCore/jit/ThunkGenerators.cpp:
(JSC::nativeForGenerator):
* Source/JavaScriptCore/llint/LLIntOfflineAsmConfig.h:
* Source/JavaScriptCore/runtime/VM.h:
* Source/JavaScriptCore/yarr/YarrJIT.cpp:
* Source/JavaScriptCore/yarr/YarrJITRegisters.h:
* Source/WTF/wtf/PlatformEnable.h:

Canonical link: https://commits.webkit.org/272866@main