/*
- * Copyright (C) 2011 Apple Inc. All rights reserved.
+ * Copyright (C) 2011, 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#if ENABLE(DFG_JIT) && USE(JSVALUE64)
#include "DFGOperations.h"
+#include "Operations.h"
+#include <wtf/DataLog.h>
namespace JSC { namespace DFG {
-void OSRExitCompiler::compileExit(const OSRExit& exit, SpeculationRecovery* recovery)
+void OSRExitCompiler::compileExit(const OSRExit& exit, const Operands<ValueRecovery>& operands, SpeculationRecovery* recovery)
{
// 1) Pro-forma stuff.
#if DFG_ENABLE(DEBUG_VERBOSE)
- dataLog("OSR exit for Node @%d (", (int)exit.m_nodeIndex);
+ dataLogF("OSR exit for (");
for (CodeOrigin codeOrigin = exit.m_codeOrigin; ; codeOrigin = codeOrigin.inlineCallFrame->caller) {
- dataLog("bc#%u", codeOrigin.bytecodeIndex);
+ dataLogF("bc#%u", codeOrigin.bytecodeIndex);
if (!codeOrigin.inlineCallFrame)
break;
- dataLog(" -> %p ", codeOrigin.inlineCallFrame->executable.get());
+ dataLogF(" -> %p ", codeOrigin.inlineCallFrame->executable.get());
}
- dataLog(") ");
- exit.dump(WTF::dataFile());
-#endif
-#if DFG_ENABLE(VERBOSE_SPECULATION_FAILURE)
- SpeculationFailureDebugInfo* debugInfo = new SpeculationFailureDebugInfo;
- debugInfo->codeBlock = m_jit.codeBlock();
- debugInfo->nodeIndex = exit.m_nodeIndex;
-
- m_jit.debugCall(debugOperationPrintSpeculationFailure, debugInfo);
+ dataLogF(") ");
+ dumpOperands(operands, WTF::dataFile());
#endif
+
+ if (Options::printEachOSRExit()) {
+ SpeculationFailureDebugInfo* debugInfo = new SpeculationFailureDebugInfo;
+ debugInfo->codeBlock = m_jit.codeBlock();
+
+ m_jit.debugCall(debugOperationPrintSpeculationFailure, debugInfo);
+ }
#if DFG_ENABLE(JIT_BREAK_ON_SPECULATION_FAILURE)
m_jit.breakpoint();
switch (recovery->type()) {
case SpeculativeAdd:
m_jit.sub32(recovery->src(), recovery->dest());
- m_jit.orPtr(GPRInfo::tagTypeNumberRegister, recovery->dest());
+ m_jit.or64(GPRInfo::tagTypeNumberRegister, recovery->dest());
alreadyBoxed = recovery->dest();
break;
case BooleanSpeculationCheck:
- m_jit.xorPtr(AssemblyHelpers::TrustedImm32(static_cast<int32_t>(ValueFalse)), recovery->dest());
+ m_jit.xor64(AssemblyHelpers::TrustedImm32(static_cast<int32_t>(ValueFalse)), recovery->dest());
break;
default:
}
}
- // 3) Refine some value profile, if appropriate.
-
- if (!!exit.m_jsValueSource && !!exit.m_valueProfile) {
- EncodedJSValue* bucket = exit.m_valueProfile.getSpecFailBucket(0);
-
-#if DFG_ENABLE(VERBOSE_SPECULATION_FAILURE)
- dataLog(" (have exit profile, bucket %p) ", bucket);
+ // 3) Refine some array and/or value profile, if appropriate.
+
+ if (!!exit.m_jsValueSource) {
+ if (exit.m_kind == BadCache || exit.m_kind == BadIndexingType) {
+ // If the instruction that this originated from has an array profile, then
+ // refine it. If it doesn't, then do nothing. The latter could happen for
+ // hoisted checks, or checks emitted for operations that didn't have array
+ // profiling - either ops that aren't array accesses at all, or weren't
+ // known to be array acceses in the bytecode. The latter case is a FIXME
+ // while the former case is an outcome of a CheckStructure not knowing why
+ // it was emitted (could be either due to an inline cache of a property
+ // property access, or due to an array profile).
+
+ CodeOrigin codeOrigin = exit.m_codeOriginForExitProfile;
+ if (ArrayProfile* arrayProfile = m_jit.baselineCodeBlockFor(codeOrigin)->getArrayProfile(codeOrigin.bytecodeIndex)) {
+ GPRReg usedRegister;
+ if (exit.m_jsValueSource.isAddress())
+ usedRegister = exit.m_jsValueSource.base();
+ else
+ usedRegister = exit.m_jsValueSource.gpr();
+
+ GPRReg scratch1;
+ GPRReg scratch2;
+ scratch1 = AssemblyHelpers::selectScratchGPR(usedRegister);
+ scratch2 = AssemblyHelpers::selectScratchGPR(usedRegister, scratch1);
+
+#if CPU(ARM64)
+ m_jit.pushToSave(scratch1);
+ m_jit.pushToSave(scratch2);
+#else
+ m_jit.push(scratch1);
+ m_jit.push(scratch2);
#endif
+
+ GPRReg value;
+ if (exit.m_jsValueSource.isAddress()) {
+ value = scratch1;
+ m_jit.loadPtr(AssemblyHelpers::Address(exit.m_jsValueSource.asAddress()), value);
+ } else
+ value = exit.m_jsValueSource.gpr();
+
+ m_jit.loadPtr(AssemblyHelpers::Address(value, JSCell::structureOffset()), scratch1);
+ m_jit.storePtr(scratch1, arrayProfile->addressOfLastSeenStructure());
+ m_jit.load8(AssemblyHelpers::Address(scratch1, Structure::indexingTypeOffset()), scratch1);
+ m_jit.move(AssemblyHelpers::TrustedImm32(1), scratch2);
+ m_jit.lshift32(scratch1, scratch2);
+ m_jit.or32(scratch2, AssemblyHelpers::AbsoluteAddress(arrayProfile->addressOfArrayModes()));
+
+#if CPU(ARM64)
+ m_jit.popToRestore(scratch2);
+ m_jit.popToRestore(scratch1);
+#else
+ m_jit.pop(scratch2);
+ m_jit.pop(scratch1);
+#endif
+ }
+ }
+
+ if (!!exit.m_valueProfile) {
+ EncodedJSValue* bucket = exit.m_valueProfile.getSpecFailBucket(0);
- if (exit.m_jsValueSource.isAddress()) {
- // We can't be sure that we have a spare register. So use the tagTypeNumberRegister,
- // since we know how to restore it.
- m_jit.loadPtr(AssemblyHelpers::Address(exit.m_jsValueSource.asAddress()), GPRInfo::tagTypeNumberRegister);
- m_jit.storePtr(GPRInfo::tagTypeNumberRegister, bucket);
- m_jit.move(AssemblyHelpers::TrustedImmPtr(bitwise_cast<void*>(TagTypeNumber)), GPRInfo::tagTypeNumberRegister);
- } else
- m_jit.storePtr(exit.m_jsValueSource.gpr(), bucket);
+ if (exit.m_jsValueSource.isAddress()) {
+ // We can't be sure that we have a spare register. So use the tagTypeNumberRegister,
+ // since we know how to restore it.
+ m_jit.load64(AssemblyHelpers::Address(exit.m_jsValueSource.asAddress()), GPRInfo::tagTypeNumberRegister);
+ m_jit.store64(GPRInfo::tagTypeNumberRegister, bucket);
+ m_jit.move(AssemblyHelpers::TrustedImm64(TagTypeNumber), GPRInfo::tagTypeNumberRegister);
+ } else
+ m_jit.store64(exit.m_jsValueSource.gpr(), bucket);
+ }
}
// 4) Figure out how many scratch slots we'll need. We need one for every GPR/FPR
// GPRInfo::numberOfRegisters of them. Also see if there are any constants,
// any undefined slots, any FPR slots, and any unboxed ints.
- Vector<bool> poisonedVirtualRegisters(exit.m_variables.size());
+ Vector<bool> poisonedVirtualRegisters(operands.numberOfLocals());
for (unsigned i = 0; i < poisonedVirtualRegisters.size(); ++i)
poisonedVirtualRegisters[i] = false;
bool haveConstants = false;
bool haveUndefined = false;
bool haveUInt32s = false;
+ bool haveArguments = false;
- for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
- const ValueRecovery& recovery = exit.valueRecovery(index);
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
switch (recovery.technique()) {
- case Int32DisplacedInRegisterFile:
- case DoubleDisplacedInRegisterFile:
- case DisplacedInRegisterFile:
+ case Int32DisplacedInJSStack:
+ case DoubleDisplacedInJSStack:
+ case DisplacedInJSStack:
numberOfDisplacedVirtualRegisters++;
ASSERT((int)recovery.virtualRegister() >= 0);
// to ensure this happens efficiently. Note that we expect this case
// to be rare, so the handling of it is optimized for the cases in
// which it does not happen.
- if (recovery.virtualRegister() < (int)exit.m_variables.size()) {
- switch (exit.m_variables[recovery.virtualRegister()].technique()) {
+ if (recovery.virtualRegister() < (int)operands.numberOfLocals()) {
+ switch (operands.local(recovery.virtualRegister()).technique()) {
case InGPR:
case UnboxedInt32InGPR:
case UInt32InGPR:
break;
case UnboxedInt32InGPR:
- case AlreadyInRegisterFileAsUnboxedInt32:
+ case AlreadyInJSStackAsUnboxedInt32:
haveUnboxedInt32s = true;
break;
- case AlreadyInRegisterFileAsUnboxedDouble:
+ case AlreadyInJSStackAsUnboxedDouble:
haveUnboxedDoubles = true;
break;
haveUndefined = true;
break;
+ case ArgumentsThatWereNotCreated:
+ haveArguments = true;
+ break;
+
default:
break;
}
}
#if DFG_ENABLE(DEBUG_VERBOSE)
- dataLog(" ");
+ dataLogF(" ");
if (numberOfPoisonedVirtualRegisters)
- dataLog("Poisoned=%u ", numberOfPoisonedVirtualRegisters);
+ dataLogF("Poisoned=%u ", numberOfPoisonedVirtualRegisters);
if (numberOfDisplacedVirtualRegisters)
- dataLog("Displaced=%u ", numberOfDisplacedVirtualRegisters);
+ dataLogF("Displaced=%u ", numberOfDisplacedVirtualRegisters);
if (haveUnboxedInt32s)
- dataLog("UnboxedInt32 ");
+ dataLogF("UnboxedInt32 ");
if (haveUnboxedDoubles)
- dataLog("UnboxedDoubles ");
+ dataLogF("UnboxedDoubles ");
if (haveUInt32s)
- dataLog("UInt32 ");
+ dataLogF("UInt32 ");
if (haveFPRs)
- dataLog("FPR ");
+ dataLogF("FPR ");
if (haveConstants)
- dataLog("Constants ");
+ dataLogF("Constants ");
if (haveUndefined)
- dataLog("Undefined ");
- dataLog(" ");
+ dataLogF("Undefined ");
+ dataLogF(" ");
#endif
- ScratchBuffer* scratchBuffer = m_jit.globalData()->scratchBufferForSize(sizeof(EncodedJSValue) * std::max(haveUInt32s ? 2u : 0u, numberOfPoisonedVirtualRegisters + (numberOfDisplacedVirtualRegisters <= GPRInfo::numberOfRegisters ? 0 : numberOfDisplacedVirtualRegisters)));
+ ScratchBuffer* scratchBuffer = m_jit.vm()->scratchBufferForSize(sizeof(EncodedJSValue) * std::max(haveUInt32s ? 2u : 0u, numberOfPoisonedVirtualRegisters + (numberOfDisplacedVirtualRegisters <= GPRInfo::numberOfRegisters ? 0 : numberOfDisplacedVirtualRegisters)));
EncodedJSValue* scratchDataBuffer = scratchBuffer ? static_cast<EncodedJSValue*>(scratchBuffer->dataBuffer()) : 0;
// From here on, the code assumes that it is profitable to maximize the distance
// 5) Perform all reboxing of integers.
if (haveUnboxedInt32s || haveUInt32s) {
- for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
- const ValueRecovery& recovery = exit.valueRecovery(index);
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
switch (recovery.technique()) {
case UnboxedInt32InGPR:
if (recovery.gpr() != alreadyBoxed)
- m_jit.orPtr(GPRInfo::tagTypeNumberRegister, recovery.gpr());
+ m_jit.or64(GPRInfo::tagTypeNumberRegister, recovery.gpr());
break;
- case AlreadyInRegisterFileAsUnboxedInt32:
- m_jit.store32(AssemblyHelpers::TrustedImm32(static_cast<uint32_t>(TagTypeNumber >> 32)), AssemblyHelpers::tagFor(static_cast<VirtualRegister>(exit.operandForIndex(index))));
+ case AlreadyInJSStackAsUnboxedInt32:
+ m_jit.store32(AssemblyHelpers::TrustedImm32(static_cast<uint32_t>(TagTypeNumber >> 32)), AssemblyHelpers::tagFor(static_cast<VirtualRegister>(operands.operandForIndex(index))));
break;
case UInt32InGPR: {
if (addressGPR == recovery.gpr())
addressGPR = GPRInfo::regT1;
- m_jit.storePtr(addressGPR, scratchDataBuffer);
+ m_jit.store64(addressGPR, scratchDataBuffer);
m_jit.move(AssemblyHelpers::TrustedImmPtr(scratchDataBuffer + 1), addressGPR);
m_jit.storeDouble(FPRInfo::fpRegT0, addressGPR);
positive.link(&m_jit);
- m_jit.orPtr(GPRInfo::tagTypeNumberRegister, recovery.gpr());
+ m_jit.or64(GPRInfo::tagTypeNumberRegister, recovery.gpr());
done.link(&m_jit);
m_jit.loadDouble(addressGPR, FPRInfo::fpRegT0);
- m_jit.loadPtr(scratchDataBuffer, addressGPR);
+ m_jit.load64(scratchDataBuffer, addressGPR);
break;
}
// Note that GPRs do not have a fast change (like haveFPRs) because we expect that
// most OSR failure points will have at least one GPR that needs to be dumped.
- initializePoisoned(exit.m_variables.size());
+ initializePoisoned(operands.numberOfLocals());
unsigned currentPoisonIndex = 0;
- for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
- const ValueRecovery& recovery = exit.valueRecovery(index);
- int operand = exit.operandForIndex(index);
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
+ int operand = operands.operandForIndex(index);
switch (recovery.technique()) {
case InGPR:
case UnboxedInt32InGPR:
case UInt32InGPR:
- if (exit.isVariable(index) && poisonedVirtualRegisters[exit.variableForIndex(index)]) {
- m_jit.storePtr(recovery.gpr(), scratchDataBuffer + currentPoisonIndex);
- m_poisonScratchIndices[exit.variableForIndex(index)] = currentPoisonIndex;
+ if (operands.isVariable(index) && poisonedVirtualRegisters[operands.variableForIndex(index)]) {
+ m_jit.store64(recovery.gpr(), scratchDataBuffer + currentPoisonIndex);
+ m_poisonScratchIndices[operands.variableForIndex(index)] = currentPoisonIndex;
currentPoisonIndex++;
} else
- m_jit.storePtr(recovery.gpr(), AssemblyHelpers::addressFor((VirtualRegister)operand));
+ m_jit.store64(recovery.gpr(), AssemblyHelpers::addressFor((VirtualRegister)operand));
break;
default:
break;
if (haveFPRs) {
// 7) Box all doubles (relies on there being more GPRs than FPRs)
- for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
- const ValueRecovery& recovery = exit.valueRecovery(index);
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
if (recovery.technique() != InFPR)
continue;
FPRReg fpr = recovery.fpr();
m_jit.boxDouble(fpr, gpr);
}
- // 8) Dump all doubles into the register file, or to the scratch storage if
+ // 8) Dump all doubles into the stack, or to the scratch storage if
// the destination virtual register is poisoned.
- for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
- const ValueRecovery& recovery = exit.valueRecovery(index);
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
if (recovery.technique() != InFPR)
continue;
GPRReg gpr = GPRInfo::toRegister(FPRInfo::toIndex(recovery.fpr()));
- if (exit.isVariable(index) && poisonedVirtualRegisters[exit.variableForIndex(index)]) {
- m_jit.storePtr(gpr, scratchDataBuffer + currentPoisonIndex);
- m_poisonScratchIndices[exit.variableForIndex(index)] = currentPoisonIndex;
+ if (operands.isVariable(index) && poisonedVirtualRegisters[operands.variableForIndex(index)]) {
+ m_jit.store64(gpr, scratchDataBuffer + currentPoisonIndex);
+ m_poisonScratchIndices[operands.variableForIndex(index)] = currentPoisonIndex;
currentPoisonIndex++;
} else
- m_jit.storePtr(gpr, AssemblyHelpers::addressFor((VirtualRegister)exit.operandForIndex(index)));
+ m_jit.store64(gpr, AssemblyHelpers::addressFor((VirtualRegister)operands.operandForIndex(index)));
}
}
// At this point all GPRs and FPRs are available for scratch use.
- // 9) Box all unboxed doubles in the register file.
+ // 9) Box all unboxed doubles in the stack.
if (haveUnboxedDoubles) {
- for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
- const ValueRecovery& recovery = exit.valueRecovery(index);
- if (recovery.technique() != AlreadyInRegisterFileAsUnboxedDouble)
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
+ if (recovery.technique() != AlreadyInJSStackAsUnboxedDouble)
continue;
- m_jit.loadDouble(AssemblyHelpers::addressFor((VirtualRegister)exit.operandForIndex(index)), FPRInfo::fpRegT0);
+ m_jit.loadDouble(AssemblyHelpers::addressFor((VirtualRegister)operands.operandForIndex(index)), FPRInfo::fpRegT0);
m_jit.boxDouble(FPRInfo::fpRegT0, GPRInfo::regT0);
- m_jit.storePtr(GPRInfo::regT0, AssemblyHelpers::addressFor((VirtualRegister)exit.operandForIndex(index)));
+ m_jit.store64(GPRInfo::regT0, AssemblyHelpers::addressFor((VirtualRegister)operands.operandForIndex(index)));
}
}
// that is far from guaranteed.
unsigned displacementIndex = 0;
- for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
- const ValueRecovery& recovery = exit.valueRecovery(index);
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
switch (recovery.technique()) {
- case DisplacedInRegisterFile:
- m_jit.loadPtr(AssemblyHelpers::addressFor(recovery.virtualRegister()), GPRInfo::toRegister(displacementIndex++));
+ case DisplacedInJSStack:
+ m_jit.load64(AssemblyHelpers::addressFor(recovery.virtualRegister()), GPRInfo::toRegister(displacementIndex++));
break;
- case Int32DisplacedInRegisterFile: {
+ case Int32DisplacedInJSStack: {
GPRReg gpr = GPRInfo::toRegister(displacementIndex++);
m_jit.load32(AssemblyHelpers::addressFor(recovery.virtualRegister()), gpr);
- m_jit.orPtr(GPRInfo::tagTypeNumberRegister, gpr);
+ m_jit.or64(GPRInfo::tagTypeNumberRegister, gpr);
break;
}
- case DoubleDisplacedInRegisterFile: {
+ case DoubleDisplacedInJSStack: {
GPRReg gpr = GPRInfo::toRegister(displacementIndex++);
- m_jit.loadPtr(AssemblyHelpers::addressFor(recovery.virtualRegister()), gpr);
- m_jit.subPtr(GPRInfo::tagTypeNumberRegister, gpr);
+ m_jit.load64(AssemblyHelpers::addressFor(recovery.virtualRegister()), gpr);
+ m_jit.sub64(GPRInfo::tagTypeNumberRegister, gpr);
break;
}
}
displacementIndex = 0;
- for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
- const ValueRecovery& recovery = exit.valueRecovery(index);
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
switch (recovery.technique()) {
- case DisplacedInRegisterFile:
- case Int32DisplacedInRegisterFile:
- case DoubleDisplacedInRegisterFile:
- m_jit.storePtr(GPRInfo::toRegister(displacementIndex++), AssemblyHelpers::addressFor((VirtualRegister)exit.operandForIndex(index)));
+ case DisplacedInJSStack:
+ case Int32DisplacedInJSStack:
+ case DoubleDisplacedInJSStack:
+ m_jit.store64(GPRInfo::toRegister(displacementIndex++), AssemblyHelpers::addressFor((VirtualRegister)operands.operandForIndex(index)));
break;
default:
// to their new (old JIT) locations.
unsigned scratchIndex = numberOfPoisonedVirtualRegisters;
- for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
- const ValueRecovery& recovery = exit.valueRecovery(index);
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
switch (recovery.technique()) {
- case DisplacedInRegisterFile:
- m_jit.loadPtr(AssemblyHelpers::addressFor(recovery.virtualRegister()), GPRInfo::regT0);
- m_jit.storePtr(GPRInfo::regT0, scratchDataBuffer + scratchIndex++);
+ case DisplacedInJSStack:
+ m_jit.load64(AssemblyHelpers::addressFor(recovery.virtualRegister()), GPRInfo::regT0);
+ m_jit.store64(GPRInfo::regT0, scratchDataBuffer + scratchIndex++);
break;
- case Int32DisplacedInRegisterFile: {
+ case Int32DisplacedInJSStack: {
m_jit.load32(AssemblyHelpers::addressFor(recovery.virtualRegister()), GPRInfo::regT0);
- m_jit.orPtr(GPRInfo::tagTypeNumberRegister, GPRInfo::regT0);
- m_jit.storePtr(GPRInfo::regT0, scratchDataBuffer + scratchIndex++);
+ m_jit.or64(GPRInfo::tagTypeNumberRegister, GPRInfo::regT0);
+ m_jit.store64(GPRInfo::regT0, scratchDataBuffer + scratchIndex++);
break;
}
- case DoubleDisplacedInRegisterFile: {
- m_jit.loadPtr(AssemblyHelpers::addressFor(recovery.virtualRegister()), GPRInfo::regT0);
- m_jit.subPtr(GPRInfo::tagTypeNumberRegister, GPRInfo::regT0);
- m_jit.storePtr(GPRInfo::regT0, scratchDataBuffer + scratchIndex++);
+ case DoubleDisplacedInJSStack: {
+ m_jit.load64(AssemblyHelpers::addressFor(recovery.virtualRegister()), GPRInfo::regT0);
+ m_jit.sub64(GPRInfo::tagTypeNumberRegister, GPRInfo::regT0);
+ m_jit.store64(GPRInfo::regT0, scratchDataBuffer + scratchIndex++);
break;
}
}
scratchIndex = numberOfPoisonedVirtualRegisters;
- for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
- const ValueRecovery& recovery = exit.valueRecovery(index);
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
switch (recovery.technique()) {
- case DisplacedInRegisterFile:
- case Int32DisplacedInRegisterFile:
- case DoubleDisplacedInRegisterFile:
- m_jit.loadPtr(scratchDataBuffer + scratchIndex++, GPRInfo::regT0);
- m_jit.storePtr(GPRInfo::regT0, AssemblyHelpers::addressFor((VirtualRegister)exit.operandForIndex(index)));
+ case DisplacedInJSStack:
+ case Int32DisplacedInJSStack:
+ case DoubleDisplacedInJSStack:
+ m_jit.load64(scratchDataBuffer + scratchIndex++, GPRInfo::regT0);
+ m_jit.store64(GPRInfo::regT0, AssemblyHelpers::addressFor((VirtualRegister)operands.operandForIndex(index)));
break;
default:
// 11) Dump all poisoned virtual registers.
if (numberOfPoisonedVirtualRegisters) {
- for (int virtualRegister = 0; virtualRegister < (int)exit.m_variables.size(); ++virtualRegister) {
+ for (int virtualRegister = 0; virtualRegister < (int)operands.numberOfLocals(); ++virtualRegister) {
if (!poisonedVirtualRegisters[virtualRegister])
continue;
- const ValueRecovery& recovery = exit.m_variables[virtualRegister];
+ const ValueRecovery& recovery = operands.local(virtualRegister);
switch (recovery.technique()) {
case InGPR:
case UnboxedInt32InGPR:
case UInt32InGPR:
case InFPR:
- m_jit.loadPtr(scratchDataBuffer + poisonIndex(virtualRegister), GPRInfo::regT0);
- m_jit.storePtr(GPRInfo::regT0, AssemblyHelpers::addressFor((VirtualRegister)virtualRegister));
+ m_jit.load64(scratchDataBuffer + poisonIndex(virtualRegister), GPRInfo::regT0);
+ m_jit.store64(GPRInfo::regT0, AssemblyHelpers::addressFor((VirtualRegister)virtualRegister));
break;
default:
if (haveConstants) {
if (haveUndefined)
- m_jit.move(AssemblyHelpers::TrustedImmPtr(JSValue::encode(jsUndefined())), GPRInfo::regT0);
+ m_jit.move(AssemblyHelpers::TrustedImm64(JSValue::encode(jsUndefined())), GPRInfo::regT0);
- for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
- const ValueRecovery& recovery = exit.valueRecovery(index);
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
if (recovery.technique() != Constant)
continue;
if (recovery.constant().isUndefined())
- m_jit.storePtr(GPRInfo::regT0, AssemblyHelpers::addressFor((VirtualRegister)exit.operandForIndex(index)));
+ m_jit.store64(GPRInfo::regT0, AssemblyHelpers::addressFor((VirtualRegister)operands.operandForIndex(index)));
else
- m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(JSValue::encode(recovery.constant())), AssemblyHelpers::addressFor((VirtualRegister)exit.operandForIndex(index)));
+ m_jit.store64(AssemblyHelpers::TrustedImm64(JSValue::encode(recovery.constant())), AssemblyHelpers::addressFor((VirtualRegister)operands.operandForIndex(index)));
}
}
handleExitCounts(exit);
- // 14) Load the result of the last bytecode operation into regT0.
-
- if (exit.m_lastSetOperand != std::numeric_limits<int>::max())
- m_jit.loadPtr(AssemblyHelpers::addressFor((VirtualRegister)exit.m_lastSetOperand), GPRInfo::cachedResultRegister);
-
- // 15) Fix call frame(s).
+ // 14) Reify inlined call frames.
ASSERT(m_jit.baselineCodeBlock()->getJITType() == JITCode::BaselineJIT);
- m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(m_jit.baselineCodeBlock()), AssemblyHelpers::addressFor((VirtualRegister)RegisterFile::CodeBlock));
+ m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(m_jit.baselineCodeBlock()), AssemblyHelpers::addressFor((VirtualRegister)JSStack::CodeBlock));
for (CodeOrigin codeOrigin = exit.m_codeOrigin; codeOrigin.inlineCallFrame; codeOrigin = codeOrigin.inlineCallFrame->caller) {
InlineCallFrame* inlineCallFrame = codeOrigin.inlineCallFrame;
CodeBlock* baselineCodeBlockForCaller = m_jit.baselineCodeBlockFor(inlineCallFrame->caller);
Vector<BytecodeAndMachineOffset>& decodedCodeMap = m_jit.decodedCodeMapFor(baselineCodeBlockForCaller);
unsigned returnBytecodeIndex = inlineCallFrame->caller.bytecodeIndex + OPCODE_LENGTH(op_call);
- BytecodeAndMachineOffset* mapping = binarySearch<BytecodeAndMachineOffset, unsigned, BytecodeAndMachineOffset::getBytecodeIndex>(decodedCodeMap.begin(), decodedCodeMap.size(), returnBytecodeIndex);
+ BytecodeAndMachineOffset* mapping = binarySearch<BytecodeAndMachineOffset, unsigned>(decodedCodeMap, decodedCodeMap.size(), returnBytecodeIndex, BytecodeAndMachineOffset::getBytecodeIndex);
ASSERT(mapping);
ASSERT(mapping->m_bytecodeIndex == returnBytecodeIndex);
} else
callerFrameGPR = GPRInfo::callFrameRegister;
- m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(baselineCodeBlock), AssemblyHelpers::addressFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::CodeBlock)));
- m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(inlineCallFrame->callee->scope()), AssemblyHelpers::addressFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::ScopeChain)));
- m_jit.storePtr(callerFrameGPR, AssemblyHelpers::addressFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::CallerFrame)));
- m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(jumpTarget), AssemblyHelpers::addressFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::ReturnPC)));
- m_jit.store32(AssemblyHelpers::TrustedImm32(inlineCallFrame->arguments.size()), AssemblyHelpers::payloadFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::ArgumentCount)));
- m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(inlineCallFrame->callee.get()), AssemblyHelpers::addressFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::Callee)));
+ m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(baselineCodeBlock), AssemblyHelpers::addressFor((VirtualRegister)(inlineCallFrame->stackOffset + JSStack::CodeBlock)));
+ if (!inlineCallFrame->isClosureCall())
+ m_jit.store64(AssemblyHelpers::TrustedImm64(JSValue::encode(JSValue(inlineCallFrame->callee->scope()))), AssemblyHelpers::addressFor((VirtualRegister)(inlineCallFrame->stackOffset + JSStack::ScopeChain)));
+ m_jit.store64(callerFrameGPR, AssemblyHelpers::addressFor((VirtualRegister)(inlineCallFrame->stackOffset + JSStack::CallerFrame)));
+ m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(jumpTarget), AssemblyHelpers::addressFor((VirtualRegister)(inlineCallFrame->stackOffset + JSStack::ReturnPC)));
+ m_jit.store32(AssemblyHelpers::TrustedImm32(inlineCallFrame->arguments.size()), AssemblyHelpers::payloadFor((VirtualRegister)(inlineCallFrame->stackOffset + JSStack::ArgumentCount)));
+ if (!inlineCallFrame->isClosureCall())
+ m_jit.store64(AssemblyHelpers::TrustedImm64(JSValue::encode(JSValue(inlineCallFrame->callee.get()))), AssemblyHelpers::addressFor((VirtualRegister)(inlineCallFrame->stackOffset + JSStack::Callee)));
}
+ // 15) Create arguments if necessary and place them into the appropriate aliased
+ // registers.
+
+ if (haveArguments) {
+ HashSet<InlineCallFrame*, DefaultHash<InlineCallFrame*>::Hash,
+ NullableHashTraits<InlineCallFrame*> > didCreateArgumentsObject;
+
+ for (size_t index = 0; index < operands.size(); ++index) {
+ const ValueRecovery& recovery = operands[index];
+ if (recovery.technique() != ArgumentsThatWereNotCreated)
+ continue;
+ int operand = operands.operandForIndex(index);
+ // Find the right inline call frame.
+ InlineCallFrame* inlineCallFrame = 0;
+ for (InlineCallFrame* current = exit.m_codeOrigin.inlineCallFrame;
+ current;
+ current = current->caller.inlineCallFrame) {
+ if (current->stackOffset <= operand) {
+ inlineCallFrame = current;
+ break;
+ }
+ }
+
+ if (!m_jit.baselineCodeBlockFor(inlineCallFrame)->usesArguments())
+ continue;
+ int argumentsRegister = m_jit.argumentsRegisterFor(inlineCallFrame);
+ if (didCreateArgumentsObject.add(inlineCallFrame).isNewEntry) {
+ // We know this call frame optimized out an arguments object that
+ // the baseline JIT would have created. Do that creation now.
+ if (inlineCallFrame) {
+ m_jit.addPtr(AssemblyHelpers::TrustedImm32(inlineCallFrame->stackOffset * sizeof(EncodedJSValue)), GPRInfo::callFrameRegister, GPRInfo::regT0);
+ m_jit.setupArguments(GPRInfo::regT0);
+ } else
+ m_jit.setupArgumentsExecState();
+ m_jit.move(
+ AssemblyHelpers::TrustedImmPtr(
+ bitwise_cast<void*>(operationCreateArguments)),
+ GPRInfo::nonArgGPR0);
+ m_jit.call(GPRInfo::nonArgGPR0);
+ m_jit.store64(GPRInfo::returnValueGPR, AssemblyHelpers::addressFor(argumentsRegister));
+ m_jit.store64(
+ GPRInfo::returnValueGPR,
+ AssemblyHelpers::addressFor(unmodifiedArgumentsRegister(argumentsRegister)));
+ m_jit.move(GPRInfo::returnValueGPR, GPRInfo::regT0); // no-op move on almost all platforms.
+ }
+
+ m_jit.load64(AssemblyHelpers::addressFor(argumentsRegister), GPRInfo::regT0);
+ m_jit.store64(GPRInfo::regT0, AssemblyHelpers::addressFor(operand));
+ }
+ }
+
+ // 16) Load the result of the last bytecode operation into regT0.
+
+ if (exit.m_lastSetOperand != std::numeric_limits<int>::max())
+ m_jit.load64(AssemblyHelpers::addressFor((VirtualRegister)exit.m_lastSetOperand), GPRInfo::cachedResultRegister);
+
+ // 17) Adjust the call frame pointer.
+
if (exit.m_codeOrigin.inlineCallFrame)
m_jit.addPtr(AssemblyHelpers::TrustedImm32(exit.m_codeOrigin.inlineCallFrame->stackOffset * sizeof(EncodedJSValue)), GPRInfo::callFrameRegister);
- // 16) Jump into the corresponding baseline JIT code.
+ // 18) Jump into the corresponding baseline JIT code.
CodeBlock* baselineCodeBlock = m_jit.baselineCodeBlockFor(exit.m_codeOrigin);
Vector<BytecodeAndMachineOffset>& decodedCodeMap = m_jit.decodedCodeMapFor(baselineCodeBlock);
- BytecodeAndMachineOffset* mapping = binarySearch<BytecodeAndMachineOffset, unsigned, BytecodeAndMachineOffset::getBytecodeIndex>(decodedCodeMap.begin(), decodedCodeMap.size(), exit.m_codeOrigin.bytecodeIndex);
+ BytecodeAndMachineOffset* mapping = binarySearch<BytecodeAndMachineOffset, unsigned>(decodedCodeMap, decodedCodeMap.size(), exit.m_codeOrigin.bytecodeIndex, BytecodeAndMachineOffset::getBytecodeIndex);
ASSERT(mapping);
ASSERT(mapping->m_bytecodeIndex == exit.m_codeOrigin.bytecodeIndex);
m_jit.jump(GPRInfo::regT1);
#if DFG_ENABLE(DEBUG_VERBOSE)
- dataLog("-> %p\n", jumpTarget);
+ dataLogF("-> %p\n", jumpTarget);
#endif
}
projects / apple / javascriptcore.git / blobdiff