https://bugs.webkit.org/show_bug.cgi?id=122518

Reviewed by Mark Hahnenberg.
        
- Make the X86Assembler capable of dealing with all XMM registers.
        
- Make the StackMaps code on WebKit's side capable of dealing with XMM registers.
        
- Factor out most of the smarts of StackMaps::Location into a self-contained object.
  Previously you needed both StackMaps::Location and a StackMaps reference to do most
  things since the Location might have referred to a constant. Now you can just get a
  self-contained Location object.
        
- Fix a bug where OSR exit generation thunk generator was assuming that the call frame
  register is already in argumentGPR0. In the future, the call frame will just be the
  machine FP and we won't have to do anything special. But for now the "call frame" is
  just a normal value in LLVM IR and may end up in any register. Make the OSR exit
  generation thunk generator polymorphic over the call frame argument's Location.
        
- Move the stuff that depends on the polymorphic OSR exit generation thunk generator
  into the finalizer, since generating and linking one of those thunks requires a cache
  flush and we need to do that on the main thread.

* JavaScriptCore.xcodeproj/project.pbxproj:
* assembler/ARMv7Assembler.h:
(JSC::ARMv7Assembler::firstRegister):
(JSC::ARMv7Assembler::lastRegister):
(JSC::ARMv7Assembler::firstFPRegister):
(JSC::ARMv7Assembler::lastFPRegister):
* assembler/AbstractMacroAssembler.h:
(JSC::AbstractMacroAssembler::firstFPRegister):
(JSC::AbstractMacroAssembler::lastFPRegister):
* assembler/MacroAssembler.h:
(JSC::MacroAssembler::nextFPRegister):
* assembler/MacroAssemblerARMv7.h:
* assembler/MacroAssemblerX86Common.h:
* assembler/X86Assembler.h:
(JSC::X86Assembler::firstFPRegister):
(JSC::X86Assembler::lastFPRegister):
* dfg/DFGDriver.cpp:
(JSC::DFG::compileImpl):
* ftl/FTLCompile.cpp:
(JSC::FTL::fixFunctionBasedOnStackMaps):
* ftl/FTLExitThunkGenerator.cpp:
(JSC::FTL::ExitThunkGenerator::emitThunk):
(JSC::FTL::ExitThunkGenerator::emitThunks):
* ftl/FTLJITFinalizer.cpp:
(JSC::FTL::JITFinalizer::finalizeFunction):
* ftl/FTLJITFinalizer.h:
* ftl/FTLLink.cpp:
(JSC::FTL::link):
* ftl/FTLLocation.cpp: Added.
(JSC::FTL::Location::forStackmaps):
(JSC::FTL::Location::dump):
(JSC::FTL::Location::involvesGPR):
(JSC::FTL::Location::isGPR):
(JSC::FTL::Location::gpr):
(JSC::FTL::Location::isFPR):
(JSC::FTL::Location::fpr):
(JSC::FTL::Location::restoreInto):
(WTF::printInternal):
* ftl/FTLLocation.h: Added.
(JSC::FTL::Location::Location):
(JSC::FTL::Location::forRegister):
(JSC::FTL::Location::forIndirect):
(JSC::FTL::Location::forConstant):
(JSC::FTL::Location::kind):
(JSC::FTL::Location::hasDwarfRegNum):
(JSC::FTL::Location::dwarfRegNum):
(JSC::FTL::Location::hasOffset):
(JSC::FTL::Location::offset):
(JSC::FTL::Location::hasConstant):
(JSC::FTL::Location::constant):
(JSC::FTL::Location::operator!):
(JSC::FTL::Location::isHashTableDeletedValue):
(JSC::FTL::Location::operator==):
(JSC::FTL::Location::hash):
(JSC::FTL::LocationHash::hash):
(JSC::FTL::LocationHash::equal):
* ftl/FTLLowerDFGToLLVM.cpp:
(JSC::FTL::LowerDFGToLLVM::appendOSRExit):
(JSC::FTL::LowerDFGToLLVM::linkOSRExitsAndCompleteInitializationBlocks):
* ftl/FTLSaveRestore.cpp:
(JSC::FTL::bytesForFPRs):
(JSC::FTL::requiredScratchMemorySizeInBytes):
(JSC::FTL::offsetOfFPR):
(JSC::FTL::saveAllRegisters):
(JSC::FTL::restoreAllRegisters):
* ftl/FTLSaveRestore.h:
* ftl/FTLStackMaps.cpp:
(JSC::FTL::StackMaps::Location::restoreInto):
* ftl/FTLStackMaps.h:
* ftl/FTLState.h:
* ftl/FTLThunks.cpp:
(JSC::FTL::osrExitGenerationWithoutStackMapThunkGenerator):
(JSC::FTL::osrExitGenerationWithStackMapThunkGenerator):
* ftl/FTLThunks.h:
(JSC::FTL::generateIfNecessary):
(JSC::FTL::Thunks::getOSRExitGenerationThunk):
* runtime/VM.cpp:
(JSC::VM::VM):
* runtime/VM.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@157264 268f45cc-cd09-0410-ab3c-d52691b4dbfc