• fpizlo@apple.com's avatar
    FTL: Soft-link LLVM as a workaround for LLVM's static initializers and exit-time destructors · ef8dbf84
    fpizlo@apple.com authored
    https://bugs.webkit.org/show_bug.cgi?id=122566
    
    Source/JavaScriptCore: 
    
    Reviewed by Mark Rowe.
            
    The JSC project now builds a libllvmForJSC.dylib. If FTL is enabled, this
    gets copied into JavaScriptCore.framework/Versions/A/Libraries. JSC will
    load the dylib by finding it using NSBundle APIs and then doing dlopen().
    That will only happen lazily, when something happens that requires LLVM.
            
    This mostly takes care of LLVM static initialization overhead by deferring
    it until it's really needed.
            
    This takes care of LLVM's exit-time destructors because inside
    libllvmForJSC.dylib, we override __cxa_atexit.
            
    * Configurations/JavaScriptCore.xcconfig:
    * Configurations/LLVMForJSC.xcconfig: Added.
    * JavaScriptCore.xcodeproj/project.pbxproj:
    * dfg/DFGPlan.cpp:
    (JSC::DFG::Plan::compileInThreadImpl):
    * disassembler/LLVMDisassembler.cpp:
    (JSC::tryToDisassembleWithLLVM):
    * ftl/FTLAbbreviatedTypes.h:
    * ftl/FTLAbbreviations.h:
    (JSC::FTL::voidType):
    (JSC::FTL::int1Type):
    (JSC::FTL::int8Type):
    (JSC::FTL::int16Type):
    (JSC::FTL::int32Type):
    (JSC::FTL::int64Type):
    (JSC::FTL::intPtrType):
    (JSC::FTL::floatType):
    (JSC::FTL::doubleType):
    (JSC::FTL::pointerType):
    (JSC::FTL::structType):
    (JSC::FTL::functionType):
    (JSC::FTL::typeOf):
    (JSC::FTL::mdKindID):
    (JSC::FTL::mdString):
    (JSC::FTL::mdNode):
    (JSC::FTL::setMetadata):
    (JSC::FTL::addFunction):
    (JSC::FTL::setLinkage):
    (JSC::FTL::setFunctionCallingConv):
    (JSC::FTL::getParam):
    (JSC::FTL::constInt):
    (JSC::FTL::constReal):
    (JSC::FTL::constIntToPtr):
    (JSC::FTL::constBitCast):
    (JSC::FTL::appendBasicBlock):
    (JSC::FTL::insertBasicBlock):
    (JSC::FTL::buildPhi):
    (JSC::FTL::addIncoming):
    (JSC::FTL::buildAlloca):
    (JSC::FTL::buildAdd):
    (JSC::FTL::buildSub):
    (JSC::FTL::buildMul):
    (JSC::FTL::buildDiv):
    (JSC::FTL::buildRem):
    (JSC::FTL::buildNeg):
    (JSC::FTL::buildFAdd):
    (JSC::FTL::buildFSub):
    (JSC::FTL::buildFMul):
    (JSC::FTL::buildFDiv):
    (JSC::FTL::buildFRem):
    (JSC::FTL::buildFNeg):
    (JSC::FTL::buildAnd):
    (JSC::FTL::buildOr):
    (JSC::FTL::buildXor):
    (JSC::FTL::buildShl):
    (JSC::FTL::buildAShr):
    (JSC::FTL::buildLShr):
    (JSC::FTL::buildNot):
    (JSC::FTL::buildLoad):
    (JSC::FTL::buildStore):
    (JSC::FTL::buildSExt):
    (JSC::FTL::buildZExt):
    (JSC::FTL::buildFPToSI):
    (JSC::FTL::buildFPToUI):
    (JSC::FTL::buildSIToFP):
    (JSC::FTL::buildUIToFP):
    (JSC::FTL::buildIntCast):
    (JSC::FTL::buildFPCast):
    (JSC::FTL::buildIntToPtr):
    (JSC::FTL::buildPtrToInt):
    (JSC::FTL::buildBitCast):
    (JSC::FTL::buildICmp):
    (JSC::FTL::buildFCmp):
    (JSC::FTL::buildCall):
    (JSC::FTL::setTailCall):
    (JSC::FTL::buildExtractValue):
    (JSC::FTL::buildSelect):
    (JSC::FTL::buildBr):
    (JSC::FTL::buildCondBr):
    (JSC::FTL::buildSwitch):
    (JSC::FTL::addCase):
    (JSC::FTL::buildRet):
    (JSC::FTL::buildUnreachable):
    (JSC::FTL::dumpModule):
    (JSC::FTL::verifyModule):
    * ftl/FTLCompile.cpp:
    (JSC::FTL::compile):
    * ftl/FTLFail.cpp:
    (JSC::FTL::fail):
    * ftl/FTLJITCode.h:
    * ftl/FTLJITFinalizer.h:
    * ftl/FTLLink.cpp:
    * ftl/FTLLowerDFGToLLVM.cpp:
    (JSC::FTL::LowerDFGToLLVM::lower):
    * ftl/FTLOutput.cpp:
    (JSC::FTL::Output::Output):
    (JSC::FTL::Output::~Output):
    * ftl/FTLOutput.h:
    (JSC::FTL::Output::appendTo):
    * ftl/FTLState.cpp:
    (JSC::FTL::State::State):
    (JSC::FTL::State::~State):
    * ftl/WebKitLLVMLibraryAnchor.cpp: Removed.
    * jsc.cpp:
    (jscmain):
    * llvm: Added.
    * llvm/InitializeLLVM.cpp: Added.
    (JSC::initializeLLVM):
    * llvm/InitializeLLVM.h: Added.
    * llvm/InitializeLLVMMac.mm: Added.
    (JSC::initializeLLVMImpl):
    * llvm/InitializeLLVMPOSIX.cpp: Added.
    (JSC::initializeLLVMPOSIX):
    * llvm/InitializeLLVMPOSIX.h: Added.
    * llvm/LLVMAPI.cpp: Added.
    * llvm/LLVMAPI.h: Added.
    * llvm/LLVMAPIFunctions.h: Added.
    * llvm/LLVMHeaders.h: Added.
    * llvm/library: Added.
    * llvm/library/LLVMAnchor.cpp: Added.
    * llvm/library/LLVMExports.cpp: Added.
    (initializeAndGetJSCLLVMAPI):
    * llvm/library/LLVMOverrides.cpp: Added.
    (__cxa_atexit):
    * llvm/library/config_llvm.h: Added.
    * runtime/InitializeThreading.cpp:
    (JSC::initializeThreadingOnce):
    * runtime/Options.h:
    
    Source/WTF: 
    
    Reviewed by Mark Rowe.
            
    Remove all LLVM stuff from WTF since to get LLVM you need to soft-link and it's
    entirely the responsibility of JSC to do that.
            
    Also fixed an export goof that I found after fixing the weak thingy script in JSC.
    
    * WTF.xcodeproj/project.pbxproj:
    * wtf/LLVMHeaders.h: Removed.
    * wtf/text/CString.h:
    (WTF::CStringHash::hash):
    
    Tools: 
    
    Reviewed by Mark Rowe.
    
    * Scripts/configure-llvm:
    
    
    
    git-svn-id: http://svn.webkit.org/repository/webkit/trunk@157260 268f45cc-cd09-0410-ab3c-d52691b4dbfc
    ef8dbf84