Changeset 90877 in webkit


Ignore:
Timestamp:
Jul 12, 2011 6:46:09 PM (13 years ago)
Author:
commit-queue@webkit.org
Message:

DFG JIT does not implement op_construct.
https://bugs.webkit.org/show_bug.cgi?id=64066

Source/JavaScriptCore:

Patch by Filip Pizlo <fpizlo@apple.com> on 2011-07-12
Reviewed by Gavin Barraclough.

This is a fixed implementation of op_construct. Constructor calls are implemented
by reusing almost all of the code for Call, with care taken to make sure that
where the are differences (like selecting different code blocks), those differences
are respected. The two fixes over the last patch are: (1) make sure the
CodeBlock::unlinkCalls respects differences between Call and Construct, and (2)
make sure that virtualFor() in DFGOperations respects the CodeSpecializationKind
(either CodeForCall or CodeForConstruct) when invoking the compiler.

  • dfg/DFGAliasTracker.h:

(JSC::DFG::AliasTracker::recordConstruct):

  • dfg/DFGByteCodeParser.cpp:

(JSC::DFG::ByteCodeParser::addCall):
(JSC::DFG::ByteCodeParser::parseBlock):

  • dfg/DFGJITCodeGenerator.cpp:

(JSC::DFG::JITCodeGenerator::emitCall):

  • dfg/DFGNode.h:
  • dfg/DFGNonSpeculativeJIT.cpp:

(JSC::DFG::NonSpeculativeJIT::compile):

  • dfg/DFGOperations.cpp:
  • dfg/DFGOperations.h:
  • dfg/DFGRepatch.cpp:

(JSC::DFG::dfgLinkFor):

  • dfg/DFGRepatch.h:
  • dfg/DFGSpeculativeJIT.cpp:

(JSC::DFG::SpeculativeJIT::compile):

  • runtime/CodeBlock.cpp:

(JSC::CodeBlock::unlinkCalls):

LayoutTests:

Patch by Filip Pizlo <fpizlo@apple.com> on 2011-07-12
Reviewed by Gavin Barraclough.

Added a test for the DFG op_construct regression, where polymorphic constructor
calls will result in the code being compiled for call but then invoked as a
constructor. This test will fail if that part of the patch is omitted.

  • fast/js/polymorphic-construct-expected.txt: Added.
  • fast/js/polymorphic-construct.html: Added.
  • fast/js/script-tests/polymorphic-construct.js: Added.

(Foo):
():

Location:
trunk
Files:
3 added
13 edited

Legend:

Unmodified
Added
Removed
  • trunk/LayoutTests/ChangeLog

    r90876 r90877  
     12011-07-12  Filip Pizlo  <fpizlo@apple.com>
     2
     3        DFG JIT does not implement op_construct.
     4        https://bugs.webkit.org/show_bug.cgi?id=64066
     5
     6        Reviewed by Gavin Barraclough.
     7
     8        Added a test for the DFG op_construct regression, where polymorphic constructor
     9        calls will result in the code being compiled for call but then invoked as a
     10        constructor.  This test will fail if that part of the patch is omitted.
     11
     12        * fast/js/polymorphic-construct-expected.txt: Added.
     13        * fast/js/polymorphic-construct.html: Added.
     14        * fast/js/script-tests/polymorphic-construct.js: Added.
     15        (Foo):
     16        ():
     17
    1182011-07-12  Chris Rogers  <crogers@google.com>
    219
  • trunk/Source/JavaScriptCore/ChangeLog

    r90875 r90877  
     12011-07-12  Filip Pizlo  <fpizlo@apple.com>
     2
     3        DFG JIT does not implement op_construct.
     4        https://bugs.webkit.org/show_bug.cgi?id=64066
     5
     6        Reviewed by Gavin Barraclough.
     7       
     8        This is a fixed implementation of op_construct.  Constructor calls are implemented
     9        by reusing almost all of the code for Call, with care taken to make sure that
     10        where the are differences (like selecting different code blocks), those differences
     11        are respected.  The two fixes over the last patch are: (1) make sure the
     12        CodeBlock::unlinkCalls respects differences between Call and Construct, and (2)
     13        make sure that virtualFor() in DFGOperations respects the CodeSpecializationKind
     14        (either CodeForCall or CodeForConstruct) when invoking the compiler.
     15
     16        * dfg/DFGAliasTracker.h:
     17        (JSC::DFG::AliasTracker::recordConstruct):
     18        * dfg/DFGByteCodeParser.cpp:
     19        (JSC::DFG::ByteCodeParser::addCall):
     20        (JSC::DFG::ByteCodeParser::parseBlock):
     21        * dfg/DFGJITCodeGenerator.cpp:
     22        (JSC::DFG::JITCodeGenerator::emitCall):
     23        * dfg/DFGNode.h:
     24        * dfg/DFGNonSpeculativeJIT.cpp:
     25        (JSC::DFG::NonSpeculativeJIT::compile):
     26        * dfg/DFGOperations.cpp:
     27        * dfg/DFGOperations.h:
     28        * dfg/DFGRepatch.cpp:
     29        (JSC::DFG::dfgLinkFor):
     30        * dfg/DFGRepatch.h:
     31        * dfg/DFGSpeculativeJIT.cpp:
     32        (JSC::DFG::SpeculativeJIT::compile):
     33        * runtime/CodeBlock.cpp:
     34        (JSC::CodeBlock::unlinkCalls):
     35
    1362011-07-12  Oliver Hunt  <oliver@apple.com>
    237
  • trunk/Source/JavaScriptCore/bytecode/CodeBlock.cpp

    r90529 r90877  
    17521752        if (getJITCode().jitType() == JITCode::DFGJIT) {
    17531753#if ENABLE(DFG_JIT)
    1754             repatchBuffer.relink(CodeLocationCall(m_callLinkInfos[i].callReturnLocation), operationLinkCall);
     1754            repatchBuffer.relink(CodeLocationCall(m_callLinkInfos[i].callReturnLocation), m_callLinkInfos[i].isCall ? operationLinkCall : operationLinkConstruct);
    17551755#else
    17561756            ASSERT_NOT_REACHED();
  • trunk/Source/JavaScriptCore/dfg/DFGAliasTracker.h

    r90673 r90877  
    108108    }
    109109
     110    void recordConstruct(NodeIndex construct)
     111    {
     112        ASSERT_UNUSED(construct, m_graph[construct].op == Construct);
     113        m_candidateAliasGetByVal = NoNode;
     114    }
     115
    110116private:
    111117    // This method returns true for arguments:
  • trunk/Source/JavaScriptCore/dfg/DFGByteCodeParser.cpp

    r90673 r90877  
    411411        m_graph.m_varArgChildren.append(child);
    412412        m_numPassedVarArgs++;
     413    }
     414   
     415    NodeIndex addCall(Interpreter* interpreter, Instruction* currentInstruction, NodeType op)
     416    {
     417        addVarArgChild(get(currentInstruction[1].u.operand));
     418        int argCount = currentInstruction[2].u.operand;
     419        int registerOffset = currentInstruction[3].u.operand;
     420        int firstArg = registerOffset - argCount - RegisterFile::CallFrameHeaderSize;
     421        for (int argIdx = firstArg; argIdx < firstArg + argCount; argIdx++)
     422            addVarArgChild(get(argIdx));
     423        NodeIndex call = addToGraph(Node::VarArg, op);
     424        Instruction* putInstruction = currentInstruction + OPCODE_LENGTH(op_call);
     425        if (interpreter->getOpcodeID(putInstruction->u.opcode) == op_call_put_result)
     426            set(putInstruction[1].u.operand, call);
     427        if (RegisterFile::CallFrameHeaderSize + (unsigned)argCount > m_parameterSlots)
     428            m_parameterSlots = RegisterFile::CallFrameHeaderSize + argCount;
     429        return call;
    413430    }
    414431
     
    11021119           
    11031120        case op_call: {
    1104             addVarArgChild(get(currentInstruction[1].u.operand));
    1105             int argCount = currentInstruction[2].u.operand;
    1106             int registerOffset = currentInstruction[3].u.operand;
    1107             int firstArg = registerOffset - argCount - RegisterFile::CallFrameHeaderSize;
    1108             for (int argIdx = firstArg; argIdx < firstArg + argCount; argIdx++)
    1109                 addVarArgChild(get(argIdx));
    1110             NodeIndex call = addToGraph(Node::VarArg, Call);
     1121            NodeIndex call = addCall(interpreter, currentInstruction, Call);
    11111122            aliases.recordCall(call);
    1112             Instruction* putInstruction = currentInstruction + OPCODE_LENGTH(op_call);
    1113             if (interpreter->getOpcodeID(putInstruction->u.opcode) == op_call_put_result)
    1114                 set(putInstruction[1].u.operand, call);
    1115             if (RegisterFile::CallFrameHeaderSize + (unsigned)argCount > m_parameterSlots)
    1116                 m_parameterSlots = RegisterFile::CallFrameHeaderSize + argCount;
    11171123            NEXT_OPCODE(op_call);
     1124        }
     1125           
     1126        case op_construct: {
     1127            NodeIndex construct = addCall(interpreter, currentInstruction, Construct);
     1128            aliases.recordConstruct(construct);
     1129            NEXT_OPCODE(op_construct);
    11181130        }
    11191131           
    11201132        case op_call_put_result: {
    1121 #if !ASSERT_DISABLED
    1122             Instruction* callInstruction = currentInstruction - OPCODE_LENGTH(op_call);
    1123             ASSERT(interpreter->getOpcodeID(callInstruction->u.opcode) == op_call);
    1124 #endif
    11251133            NEXT_OPCODE(op_call_put_result);
    11261134        }
  • trunk/Source/JavaScriptCore/dfg/DFGJITCodeGenerator.cpp

    r90673 r90877  
    471471void JITCodeGenerator::emitCall(Node& node)
    472472{
     473    P_DFGOperation_E slowCallFunction;
     474    bool isCall;
     475   
     476    if (node.op == Call) {
     477        slowCallFunction = operationLinkCall;
     478        isCall = true;
     479    } else {
     480        ASSERT(node.op == Construct);
     481        slowCallFunction = operationLinkConstruct;
     482        isCall = false;
     483    }
     484   
    473485    NodeIndex calleeNodeIndex = m_jit.graph().m_varArgChildren[node.firstChild()];
    474486    JSValueOperand callee(this, calleeNodeIndex);
     
    502514    }
    503515   
    504     switch (node.op) {
    505     case Call:
    506         m_jit.storePtr(calleeGPR, addressOfCallData(RegisterFile::Callee));
    507         break;
    508        
    509     default:
    510         ASSERT_NOT_REACHED();
    511     }
     516    m_jit.storePtr(calleeGPR, addressOfCallData(RegisterFile::Callee));
    512517   
    513518    flushRegisters();
     
    519524    JITCompiler::Jump slowPath;
    520525   
    521     switch (node.op) {
    522     case Call:
    523         slowPath = m_jit.branchPtrWithPatch(MacroAssembler::NotEqual, calleeGPR, targetToCheck, MacroAssembler::TrustedImmPtr(JSValue::encode(JSValue())));
    524         m_jit.loadPtr(MacroAssembler::Address(calleeGPR, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), resultGPR);
    525         m_jit.storePtr(resultGPR, addressOfCallData(RegisterFile::ScopeChain));
    526         break;
    527        
    528     default:
    529         ASSERT_NOT_REACHED();
    530     }
     526    slowPath = m_jit.branchPtrWithPatch(MacroAssembler::NotEqual, calleeGPR, targetToCheck, MacroAssembler::TrustedImmPtr(JSValue::encode(JSValue())));
     527    m_jit.loadPtr(MacroAssembler::Address(calleeGPR, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), resultGPR);
     528    m_jit.storePtr(resultGPR, addressOfCallData(RegisterFile::ScopeChain));
    531529
    532530    m_jit.addPtr(Imm32(m_jit.codeBlock()->m_numCalleeRegisters * sizeof(Register)), GPRInfo::callFrameRegister);
     
    540538   
    541539    m_jit.addPtr(Imm32(m_jit.codeBlock()->m_numCalleeRegisters * sizeof(Register)), GPRInfo::callFrameRegister, GPRInfo::argumentGPR0);
    542     JITCompiler::Call slowCall = m_jit.appendCallWithFastExceptionCheck(operationLinkCall, m_jit.graph()[m_compileIndex].exceptionInfo);
     540    JITCompiler::Call slowCall = m_jit.appendCallWithFastExceptionCheck(slowCallFunction, m_jit.graph()[m_compileIndex].exceptionInfo);
    543541    m_jit.move(Imm32(numArgs), GPRInfo::regT1);
    544542    m_jit.addPtr(Imm32(m_jit.codeBlock()->m_numCalleeRegisters * sizeof(Register)), GPRInfo::callFrameRegister);
     
    551549    jsValueResult(resultGPR, m_compileIndex, DataFormatJS, UseChildrenCalledExplicitly);
    552550   
    553     m_jit.addJSCall(fastCall, slowCall, targetToCheck, true, m_jit.graph()[m_compileIndex].exceptionInfo);
     551    m_jit.addJSCall(fastCall, slowCall, targetToCheck, isCall, m_jit.graph()[m_compileIndex].exceptionInfo);
    554552}
    555553
  • trunk/Source/JavaScriptCore/dfg/DFGNode.h

    r90673 r90877  
    143143    /* Calls. */\
    144144    macro(Call, NodeResultJS | NodeMustGenerate | NodeHasVarArgs) \
     145    macro(Construct, NodeResultJS | NodeMustGenerate | NodeHasVarArgs) \
    145146    \
    146147    /* Nodes for misc operations. */\
  • trunk/Source/JavaScriptCore/dfg/DFGNonSpeculativeJIT.cpp

    r90673 r90877  
    10691069       
    10701070    case Call:
     1071    case Construct:
    10711072        emitCall(node);
    10721073        break;
  • trunk/Source/JavaScriptCore/dfg/DFGOperations.cpp

    r90673 r90877  
    432432}
    433433
    434 static void* handleHostCall(ExecState* execCallee, JSValue callee)
     434static void* handleHostCall(ExecState* execCallee, JSValue callee, CodeSpecializationKind kind)
    435435{
    436436    ExecState* exec = execCallee->callerFrame();
    437437    JSGlobalData* globalData = &exec->globalData();
    438     CallData callData;
    439     CallType callType = getCallData(callee, callData);
    440    
    441     ASSERT(callType != CallTypeJS);
    442    
    443     if (callType == CallTypeHost) {
    444         if (!globalData->interpreter->registerFile().grow(execCallee->registers())) {
    445             globalData->exception = createStackOverflowError(exec);
    446             return 0;
    447         }
     438    if (kind == CodeForCall) {
     439        CallData callData;
     440        CallType callType = getCallData(callee, callData);
     441   
     442        ASSERT(callType != CallTypeJS);
     443   
     444        if (callType == CallTypeHost) {
     445            if (!globalData->interpreter->registerFile().grow(execCallee->registers())) {
     446                globalData->exception = createStackOverflowError(exec);
     447                return 0;
     448            }
    448449       
    449         execCallee->setScopeChain(exec->scopeChain());
     450            execCallee->setScopeChain(exec->scopeChain());
    450451       
    451         globalData->hostCallReturnValue = JSValue::decode(callData.native.function(execCallee));
     452            globalData->hostCallReturnValue = JSValue::decode(callData.native.function(execCallee));
    452453       
    453         if (globalData->exception)
    454             return 0;
    455         return reinterpret_cast<void*>(getHostCallReturnValue);
    456     }
    457    
    458     ASSERT(callType == CallTypeNone);
     454            if (globalData->exception)
     455                return 0;
     456            return reinterpret_cast<void*>(getHostCallReturnValue);
     457        }
     458   
     459        ASSERT(callType == CallTypeNone);
     460    } else {
     461        ASSERT(kind == CodeForConstruct);
     462       
     463        ConstructData constructData;
     464        ConstructType constructType = getConstructData(callee, constructData);
     465       
     466        ASSERT(constructType = ConstructTypeJS);
     467       
     468        if (constructType == ConstructTypeHost) {
     469            if (!globalData->interpreter->registerFile().grow(execCallee->registers())) {
     470                globalData->exception = createStackOverflowError(exec);
     471                return 0;
     472            }
     473           
     474            execCallee->setScopeChain(exec->scopeChain());
     475           
     476            globalData->hostCallReturnValue = JSValue::decode(constructData.native.function(execCallee));
     477           
     478            if (globalData->exception)
     479                return 0;
     480            return reinterpret_cast<void*>(getHostCallReturnValue);
     481        }
     482       
     483        ASSERT(constructType == ConstructTypeNone);
     484    }
    459485    exec->globalData().exception = createNotAFunctionError(exec, callee);
    460486    return 0;
    461487}
    462488
    463 void* operationLinkCallWithReturnAddress(ExecState*, ReturnAddressPtr);
    464 FUNCTION_WRAPPER_WITH_ARG2_RETURN_ADDRESS(operationLinkCall);
    465 void* operationLinkCallWithReturnAddress(ExecState* execCallee, ReturnAddressPtr returnAddress)
     489inline void* linkFor(ExecState* execCallee, ReturnAddressPtr returnAddress, CodeSpecializationKind kind)
    466490{
    467491    ExecState* exec = execCallee->callerFrame();
     
    470494    JSCell* calleeAsFunctionCell = getJSFunction(*globalData, calleeAsValue);
    471495    if (!calleeAsFunctionCell)
    472         return handleHostCall(execCallee, calleeAsValue);
     496        return handleHostCall(execCallee, calleeAsValue, kind);
    473497    JSFunction* callee = asFunction(calleeAsFunctionCell);
    474498    ExecutableBase* executable = callee->executable();
     
    477501    CodeBlock* codeBlock = 0;
    478502    if (executable->isHostFunction())
    479         codePtr = executable->generatedJITCodeForCall().addressForCall();
     503        codePtr = executable->generatedJITCodeFor(kind).addressForCall();
    480504    else {
    481505        FunctionExecutable* functionExecutable = static_cast<FunctionExecutable*>(executable);
    482         JSObject* error = functionExecutable->compileForCall(exec, callee->scope());
     506        JSObject* error = functionExecutable->compileFor(exec, callee->scope(), kind);
    483507        if (error) {
    484508            globalData->exception = createStackOverflowError(exec);
    485509            return 0;
    486510        }
    487         codeBlock = &functionExecutable->generatedBytecodeForCall();
     511        codeBlock = &functionExecutable->generatedBytecodeFor(kind);
    488512        if (execCallee->argumentCountIncludingThis() == static_cast<size_t>(codeBlock->m_numParameters))
    489             codePtr = functionExecutable->generatedJITCodeForCall().addressForCall();
     513            codePtr = functionExecutable->generatedJITCodeFor(kind).addressForCall();
    490514        else
    491             codePtr = functionExecutable->generatedJITCodeForCallWithArityCheck();
     515            codePtr = functionExecutable->generatedJITCodeWithArityCheckFor(kind);
    492516        execCallee->setScopeChain(callee->scope());
    493517    }
     
    496520        callLinkInfo.setSeen();
    497521    else
    498         dfgLinkCall(execCallee, callLinkInfo, codeBlock, callee, codePtr);
     522        dfgLinkFor(execCallee, callLinkInfo, codeBlock, callee, codePtr, kind);
    499523    return codePtr.executableAddress();
    500524}
    501525
    502 void* operationVirtualCall(ExecState* execCallee)
     526void* operationLinkCallWithReturnAddress(ExecState*, ReturnAddressPtr);
     527FUNCTION_WRAPPER_WITH_ARG2_RETURN_ADDRESS(operationLinkCall);
     528void* operationLinkCallWithReturnAddress(ExecState* execCallee, ReturnAddressPtr returnAddress)
     529{
     530    return linkFor(execCallee, returnAddress, CodeForCall);
     531}
     532
     533void* operationLinkConstructWithReturnAddress(ExecState*, ReturnAddressPtr);
     534FUNCTION_WRAPPER_WITH_ARG2_RETURN_ADDRESS(operationLinkConstruct);
     535void* operationLinkConstructWithReturnAddress(ExecState* execCallee, ReturnAddressPtr returnAddress)
     536{
     537    return linkFor(execCallee, returnAddress, CodeForConstruct);
     538}
     539
     540inline void* virtualFor(ExecState* execCallee, CodeSpecializationKind kind)
    503541{
    504542    ExecState* exec = execCallee->callerFrame();
     
    507545    JSCell* calleeAsFunctionCell = getJSFunction(*globalData, calleeAsValue);
    508546    if (UNLIKELY(!calleeAsFunctionCell))
    509         return handleHostCall(execCallee, calleeAsValue);
     547        return handleHostCall(execCallee, calleeAsValue, kind);
    510548   
    511549    JSFunction* function = asFunction(calleeAsFunctionCell);
    512550    ExecutableBase* executable = function->executable();
    513     if (UNLIKELY(!executable->hasJITCodeForCall())) {
     551    if (UNLIKELY(!executable->hasJITCodeFor(kind))) {
    514552        FunctionExecutable* functionExecutable = static_cast<FunctionExecutable*>(executable);
    515         JSObject* error = functionExecutable->compileForCall(exec, function->scope());
     553        JSObject* error = functionExecutable->compileFor(exec, function->scope(), kind);
    516554        if (error) {
    517555            exec->globalData().exception = error;
     
    520558    }
    521559    execCallee->setScopeChain(function->scopeUnchecked());
    522     return executable->generatedJITCodeForCallWithArityCheck().executableAddress();
     560    return executable->generatedJITCodeWithArityCheckFor(kind).executableAddress();
     561}
     562
     563void* operationVirtualCall(ExecState* execCallee)
     564{
     565    return virtualFor(execCallee, CodeForCall);
     566}
     567
     568void* operationVirtualConstruct(ExecState* execCallee)
     569{
     570    return virtualFor(execCallee, CodeForConstruct);
    523571}
    524572
  • trunk/Source/JavaScriptCore/dfg/DFGOperations.h

    r90673 r90877  
    4949typedef void (*V_DFGOperation_EJJI)(ExecState*, EncodedJSValue, EncodedJSValue, Identifier*);
    5050typedef double (*D_DFGOperation_DD)(double, double);
     51typedef void *(*P_DFGOperation_E)(ExecState*);
    5152
    5253// These routines are provide callbacks out to C++ implementations of operations too complex to JIT.
     
    8485void* operationVirtualCall(ExecState*);
    8586void* operationLinkCall(ExecState*);
     87void* operationVirtualConstruct(ExecState*);
     88void* operationLinkConstruct(ExecState*);
    8689
    8790// This method is used to lookup an exception hander, keyed by faultLocation, which is
  • trunk/Source/JavaScriptCore/dfg/DFGRepatch.cpp

    r90875 r90877  
    435435}
    436436
    437 void dfgLinkCall(ExecState* exec, CallLinkInfo& callLinkInfo, CodeBlock* calleeCodeBlock, JSFunction* callee, MacroAssemblerCodePtr codePtr)
     437void dfgLinkFor(ExecState* exec, CallLinkInfo& callLinkInfo, CodeBlock* calleeCodeBlock, JSFunction* callee, MacroAssemblerCodePtr codePtr, CodeSpecializationKind kind)
    438438{
    439439    CodeBlock* callerCodeBlock = exec->callerFrame()->codeBlock();
     
    447447    }
    448448   
    449     repatchBuffer.relink(CodeLocationCall(callLinkInfo.callReturnLocation), operationVirtualCall);
     449    if (kind == CodeForCall) {
     450        repatchBuffer.relink(CodeLocationCall(callLinkInfo.callReturnLocation), operationVirtualCall);
     451        return;
     452    }
     453    ASSERT(kind == CodeForConstruct);
     454    repatchBuffer.relink(CodeLocationCall(callLinkInfo.callReturnLocation), operationVirtualConstruct);
    450455}
    451456
  • trunk/Source/JavaScriptCore/dfg/DFGRepatch.h

    r90673 r90877  
    3838void dfgBuildGetByIDList(ExecState*, JSValue, const Identifier&, const PropertySlot&, StructureStubInfo&);
    3939void dfgRepatchPutByID(ExecState*, JSValue, const Identifier&, const PutPropertySlot&, StructureStubInfo&, PutKind);
    40 void dfgLinkCall(ExecState*, CallLinkInfo&, CodeBlock*, JSFunction* callee, MacroAssemblerCodePtr);
     40void dfgLinkFor(ExecState*, CallLinkInfo&, CodeBlock*, JSFunction* callee, MacroAssemblerCodePtr, CodeSpecializationKind);
    4141
    4242} } // namespace JSC::DFG
  • trunk/Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp

    r90799 r90877  
    11441144       
    11451145    case Call:
     1146    case Construct:
    11461147        emitCall(node);
    11471148        break;
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