#include "CCallHelpers.h"
#include "Debugger.h"
+#include "Exception.h"
#include "JITInlines.h"
#include "JSArray.h"
#include "JSCell.h"
+#include "JSEnvironmentRecord.h"
#include "JSFunction.h"
-#include "JSPropertyNameIterator.h"
-#include "JSVariableObject.h"
+#include "JSNameScope.h"
+#include "JSPropertyNameEnumerator.h"
#include "LinkBuffer.h"
#include "MaxFrameExtentForSlowPathCall.h"
+#include "RepatchBuffer.h"
#include "SlowPathCall.h"
+#include "TypeProfilerLog.h"
#include "VirtualRegister.h"
namespace JSC {
storePtr(callFrameRegister, &m_vm->topCallFrame);
#if CPU(X86)
- // Load caller frame's scope chain into this callframe so that whatever we call can
- // get to its global data.
- emitGetCallerFrameFromCallFrameHeaderPtr(regT0);
- emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, regT1, regT0);
- emitPutCellToCallFrameHeader(regT1, JSStack::ScopeChain);
-
// Calling convention: f(ecx, edx, ...);
// Host function signature: f(ExecState*);
move(callFrameRegister, X86Registers::ecx);
addPtr(TrustedImm32(8), stackPointerRegister);
#elif CPU(ARM) || CPU(SH4) || CPU(MIPS)
- // Load caller frame's scope chain into this callframe so that whatever we call can get to its global data.
- emitGetCallerFrameFromCallFrameHeaderPtr(regT2);
- emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, regT1, regT2);
- emitPutCellToCallFrameHeader(regT1, JSStack::ScopeChain);
-
#if CPU(MIPS)
// Allocate stack space for (unused) 16 bytes (8-byte aligned) for 4 arguments.
subPtr(TrustedImm32(16), stackPointerRegister);
#endif // CPU(X86)
// Check for an exception
- Jump sawException = branch32(NotEqual, AbsoluteAddress(reinterpret_cast<char*>(vm->addressOfException()) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), TrustedImm32(JSValue::EmptyValueTag));
+ Jump sawException = branch32(NotEqual, AbsoluteAddress(vm->addressOfException()), TrustedImm32(0));
emitFunctionEpilogue();
// Return.
}
}
-void JIT::emit_op_captured_mov(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
- int src = currentInstruction[2].u.operand;
-
- emitLoad(src, regT1, regT0);
- emitNotifyWrite(regT1, regT0, regT2, currentInstruction[3].u.watchpointSet);
- emitStore(dst, regT1, regT0);
-}
-
void JIT::emit_op_end(Instruction* currentInstruction)
{
ASSERT(returnValueGPR != callFrameRegister);
emitStoreBool(dst, regT0);
}
-void JIT::emit_op_tear_off_activation(Instruction* currentInstruction)
+void JIT::emit_op_is_object(Instruction* currentInstruction)
{
- int activation = currentInstruction[1].u.operand;
- Jump activationNotCreated = branch32(Equal, tagFor(activation), TrustedImm32(JSValue::EmptyValueTag));
- emitLoadPayload(activation, regT0);
- callOperation(operationTearOffActivation, regT0);
- activationNotCreated.link(this);
-}
+ int dst = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
-void JIT::emit_op_tear_off_arguments(Instruction* currentInstruction)
-{
- VirtualRegister arguments = VirtualRegister(currentInstruction[1].u.operand);
- int activation = currentInstruction[2].u.operand;
+ emitLoad(value, regT1, regT0);
+ Jump isNotCell = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
+
+ compare8(AboveOrEqual, Address(regT0, JSCell::typeInfoTypeOffset()), TrustedImm32(ObjectType), regT0);
+ Jump done = jump();
+
+ isNotCell.link(this);
+ move(TrustedImm32(0), regT0);
- Jump argsNotCreated = branch32(Equal, tagFor(unmodifiedArgumentsRegister(arguments).offset()), TrustedImm32(JSValue::EmptyValueTag));
- emitLoadPayload(unmodifiedArgumentsRegister(VirtualRegister(arguments)).offset(), regT0);
- emitLoadPayload(activation, regT1);
- callOperation(operationTearOffArguments, regT0, regT1);
- argsNotCreated.link(this);
+ done.link(this);
+ emitStoreBool(dst, regT0);
}
void JIT::emit_op_to_primitive(Instruction* currentInstruction)
emitLoad(src, regT1, regT0);
Jump isImm = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- addSlowCase(branchPtr(NotEqual, Address(regT0, JSCell::structureIDOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
+ addSlowCase(emitJumpIfCellObject(regT0));
isImm.link(this);
if (dst != src)
addSlowCase(branch32(NotEqual, regT1, regT3));
addSlowCase(branch32(Below, regT1, TrustedImm32(JSValue::LowestTag)));
- // Jump to a slow case if both are strings.
+ // Jump to a slow case if both are strings or symbols (non object).
Jump notCell = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- Jump firstNotString = branchPtr(NotEqual, Address(regT0, JSCell::structureIDOffset()), TrustedImmPtr(m_vm->stringStructure.get()));
- addSlowCase(branchPtr(Equal, Address(regT2, JSCell::structureIDOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
+ Jump firstIsObject = emitJumpIfCellObject(regT0);
+ addSlowCase(emitJumpIfCellNotObject(regT2));
notCell.link(this);
- firstNotString.link(this);
+ firstIsObject.link(this);
// Simply compare the payloads.
if (type == OpStrictEq)
jumpToExceptionHandler();
}
-void JIT::emit_op_get_pnames(Instruction* currentInstruction)
+void JIT::emit_op_push_with_scope(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
- int base = currentInstruction[2].u.operand;
- int i = currentInstruction[3].u.operand;
- int size = currentInstruction[4].u.operand;
- int breakTarget = currentInstruction[5].u.operand;
-
- JumpList isNotObject;
-
- emitLoad(base, regT1, regT0);
- if (!m_codeBlock->isKnownNotImmediate(base))
- isNotObject.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
- if (VirtualRegister(base) != m_codeBlock->thisRegister() || m_codeBlock->isStrictMode())
- isNotObject.append(emitJumpIfCellNotObject(regT0));
-
- // We could inline the case where you have a valid cache, but
- // this call doesn't seem to be hot.
- Label isObject(this);
- callOperation(operationGetPNames, regT0);
- emitStoreCell(dst, returnValueGPR);
- load32(Address(regT0, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStringsSize)), regT3);
- store32(TrustedImm32(Int32Tag), intTagFor(i));
- store32(TrustedImm32(0), intPayloadFor(i));
- store32(TrustedImm32(Int32Tag), intTagFor(size));
- store32(regT3, payloadFor(size));
- Jump end = jump();
-
- isNotObject.link(this);
- addJump(branch32(Equal, regT1, TrustedImm32(JSValue::NullTag)), breakTarget);
- addJump(branch32(Equal, regT1, TrustedImm32(JSValue::UndefinedTag)), breakTarget);
- callOperation(operationToObject, base, regT1, regT0);
- jump().linkTo(isObject, this);
+ emitLoad(currentInstruction[2].u.operand, regT1, regT0);
+ callOperation(operationPushWithScope, dst, regT1, regT0);
+}
- end.link(this);
+void JIT::emit_op_pop_scope(Instruction* currentInstruction)
+{
+ int scope = currentInstruction[1].u.operand;
+ callOperation(operationPopScope, scope);
}
-void JIT::emit_op_next_pname(Instruction* currentInstruction)
+void JIT::emit_op_to_number(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
- int base = currentInstruction[2].u.operand;
- int i = currentInstruction[3].u.operand;
- int size = currentInstruction[4].u.operand;
- int it = currentInstruction[5].u.operand;
- int target = currentInstruction[6].u.operand;
-
- JumpList callHasProperty;
-
- Label begin(this);
- load32(intPayloadFor(i), regT0);
- Jump end = branch32(Equal, regT0, intPayloadFor(size));
-
- // Grab key @ i
- loadPtr(payloadFor(it), regT1);
- loadPtr(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStrings)), regT2);
- load32(BaseIndex(regT2, regT0, TimesEight), regT2);
- store32(TrustedImm32(JSValue::CellTag), tagFor(dst));
- store32(regT2, payloadFor(dst));
-
- // Increment i
- add32(TrustedImm32(1), regT0);
- store32(regT0, intPayloadFor(i));
-
- // Verify that i is valid:
- loadPtr(payloadFor(base), regT0);
-
- // Test base's structure
- loadPtr(Address(regT0, JSCell::structureIDOffset()), regT2);
- callHasProperty.append(branchPtr(NotEqual, regT2, Address(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_cachedStructure)))));
-
- // Test base's prototype chain
- loadPtr(Address(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_cachedPrototypeChain))), regT3);
- loadPtr(Address(regT3, OBJECT_OFFSETOF(StructureChain, m_vector)), regT3);
- addJump(branchTestPtr(Zero, Address(regT3)), target);
-
- Label checkPrototype(this);
- callHasProperty.append(branch32(Equal, Address(regT2, Structure::prototypeOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), TrustedImm32(JSValue::NullTag)));
- loadPtr(Address(regT2, Structure::prototypeOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT2);
- loadPtr(Address(regT2, JSCell::structureIDOffset()), regT2);
- callHasProperty.append(branchPtr(NotEqual, regT2, Address(regT3)));
- addPtr(TrustedImm32(sizeof(Structure*)), regT3);
- branchTestPtr(NonZero, Address(regT3)).linkTo(checkPrototype, this);
-
- // Continue loop.
- addJump(jump(), target);
+ int src = currentInstruction[2].u.operand;
- // Slow case: Ask the object if i is valid.
- callHasProperty.link(this);
- loadPtr(addressFor(dst), regT1);
- callOperation(operationHasProperty, regT0, regT1);
+ emitLoad(src, regT1, regT0);
- // Test for valid key.
- addJump(branchTest32(NonZero, regT0), target);
- jump().linkTo(begin, this);
+ Jump isInt32 = branch32(Equal, regT1, TrustedImm32(JSValue::Int32Tag));
+ addSlowCase(branch32(AboveOrEqual, regT1, TrustedImm32(JSValue::LowestTag)));
+ isInt32.link(this);
- // End of loop.
- end.link(this);
+ if (src != dst)
+ emitStore(dst, regT1, regT0);
}
-void JIT::emit_op_push_with_scope(Instruction* currentInstruction)
+void JIT::emitSlow_op_to_number(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- emitLoad(currentInstruction[1].u.operand, regT1, regT0);
- callOperation(operationPushWithScope, regT1, regT0);
-}
+ linkSlowCase(iter);
-void JIT::emit_op_pop_scope(Instruction*)
-{
- callOperation(operationPopScope);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_to_number);
+ slowPathCall.call();
}
-void JIT::emit_op_to_number(Instruction* currentInstruction)
+void JIT::emit_op_to_string(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int src = currentInstruction[2].u.operand;
emitLoad(src, regT1, regT0);
- Jump isInt32 = branch32(Equal, regT1, TrustedImm32(JSValue::Int32Tag));
- addSlowCase(branch32(AboveOrEqual, regT1, TrustedImm32(JSValue::LowestTag)));
- isInt32.link(this);
+ addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
+ addSlowCase(branch8(NotEqual, Address(regT0, JSCell::typeInfoTypeOffset()), TrustedImm32(StringType)));
if (src != dst)
emitStore(dst, regT1, regT0);
}
-void JIT::emitSlow_op_to_number(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_to_string(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- linkSlowCase(iter);
+ linkSlowCase(iter); // Not JSCell.
+ linkSlowCase(iter); // Not JSString.
- JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_to_number);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_to_string);
slowPathCall.call();
}
void JIT::emit_op_push_name_scope(Instruction* currentInstruction)
{
+ int dst = currentInstruction[1].u.operand;
emitLoad(currentInstruction[2].u.operand, regT1, regT0);
- callOperation(operationPushNameScope, &m_codeBlock->identifier(currentInstruction[1].u.operand), regT1, regT0, currentInstruction[3].u.operand);
+ if (currentInstruction[4].u.operand == JSNameScope::CatchScope) {
+ callOperation(operationPushCatchScope, dst, jsCast<SymbolTable*>(getConstantOperand(currentInstruction[3].u.operand)), regT1, regT0);
+ return;
+ }
+
+ RELEASE_ASSERT(currentInstruction[4].u.operand == JSNameScope::FunctionNameScope);
+ callOperation(operationPushFunctionNameScope, dst, jsCast<SymbolTable*>(getConstantOperand(currentInstruction[3].u.operand)), regT1, regT0);
}
void JIT::emit_op_catch(Instruction* currentInstruction)
move(TrustedImmPtr(m_vm), regT3);
// operationThrow returns the callFrame for the handler.
load32(Address(regT3, VM::callFrameForThrowOffset()), callFrameRegister);
+ load32(Address(regT3, VM::vmEntryFrameForThrowOffset()), regT0);
+ store32(regT0, Address(regT3, VM::topVMEntryFrameOffset()));
addPtr(TrustedImm32(stackPointerOffsetFor(codeBlock()) * sizeof(Register)), callFrameRegister, stackPointerRegister);
// Now store the exception returned by operationThrow.
- load32(Address(regT3, VM::exceptionOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT0);
- load32(Address(regT3, VM::exceptionOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT1);
- store32(TrustedImm32(JSValue().payload()), Address(regT3, VM::exceptionOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.payload)));
- store32(TrustedImm32(JSValue().tag()), Address(regT3, VM::exceptionOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.tag)));
+ load32(Address(regT3, VM::exceptionOffset()), regT2);
+ move(TrustedImm32(JSValue::CellTag), regT1);
+
+ store32(TrustedImm32(0), Address(regT3, VM::exceptionOffset()));
unsigned exception = currentInstruction[1].u.operand;
- emitStore(exception, regT1, regT0);
+ emitStore(exception, regT1, regT2);
+
+ load32(Address(regT2, Exception::valueOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT0);
+ load32(Address(regT2, Exception::valueOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT1);
+
+ unsigned thrownValue = currentInstruction[2].u.operand;
+ emitStore(thrownValue, regT1, regT0);
}
void JIT::emit_op_switch_imm(Instruction* currentInstruction)
slowPathCall.call();
}
-void JIT::emit_op_create_activation(Instruction* currentInstruction)
-{
- int activation = currentInstruction[1].u.operand;
-
- Jump activationCreated = branch32(NotEqual, tagFor(activation), TrustedImm32(JSValue::EmptyValueTag));
- callOperation(operationCreateActivation, 0);
- emitStoreCell(activation, returnValueGPR);
- activationCreated.link(this);
-}
-
-void JIT::emit_op_create_arguments(Instruction* currentInstruction)
+void JIT::emit_op_create_lexical_environment(Instruction* currentInstruction)
{
- int dst = currentInstruction[1].u.operand;
+ int lexicalEnvironment = currentInstruction[1].u.operand;
+ int scope = currentInstruction[2].u.operand;
- Jump argsCreated = branch32(NotEqual, tagFor(dst), TrustedImm32(JSValue::EmptyValueTag));
- callOperation(operationCreateArguments);
- emitStoreCell(dst, returnValueGPR);
- emitStoreCell(unmodifiedArgumentsRegister(VirtualRegister(dst)).offset(), returnValueGPR);
- argsCreated.link(this);
+ emitLoadPayload(currentInstruction[2].u.operand, regT0);
+ callOperation(operationCreateActivation, regT0);
+ emitStoreCell(lexicalEnvironment, returnValueGPR);
+ emitStoreCell(scope, returnValueGPR);
}
-void JIT::emit_op_init_lazy_reg(Instruction* currentInstruction)
+void JIT::emit_op_get_scope(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
-
- emitStore(dst, JSValue());
-}
-
-void JIT::emit_op_get_callee(Instruction* currentInstruction)
-{
- int result = currentInstruction[1].u.operand;
- WriteBarrierBase<JSCell>* cachedFunction = ¤tInstruction[2].u.jsCell;
emitGetFromCallFrameHeaderPtr(JSStack::Callee, regT0);
-
- loadPtr(cachedFunction, regT2);
- addSlowCase(branchPtr(NotEqual, regT0, regT2));
-
- move(TrustedImm32(JSValue::CellTag), regT1);
- emitStore(result, regT1, regT0);
-}
-
-void JIT::emitSlow_op_get_callee(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- linkSlowCase(iter);
-
- JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_get_callee);
- slowPathCall.call();
+ loadPtr(Address(regT0, JSFunction::offsetOfScopeChain()), regT0);
+ emitStoreCell(dst, regT0);
}
void JIT::emit_op_create_this(Instruction* currentInstruction)
{
int callee = currentInstruction[2].u.operand;
+ WriteBarrierBase<JSCell>* cachedFunction = ¤tInstruction[4].u.jsCell;
RegisterID calleeReg = regT0;
+ RegisterID rareDataReg = regT4;
RegisterID resultReg = regT0;
RegisterID allocatorReg = regT1;
RegisterID structureReg = regT2;
+ RegisterID cachedFunctionReg = regT4;
RegisterID scratchReg = regT3;
emitLoadPayload(callee, calleeReg);
- loadPtr(Address(calleeReg, JSFunction::offsetOfAllocationProfile() + ObjectAllocationProfile::offsetOfAllocator()), allocatorReg);
- loadPtr(Address(calleeReg, JSFunction::offsetOfAllocationProfile() + ObjectAllocationProfile::offsetOfStructure()), structureReg);
+ loadPtr(Address(calleeReg, JSFunction::offsetOfRareData()), rareDataReg);
+ addSlowCase(branchTestPtr(Zero, rareDataReg));
+ loadPtr(Address(rareDataReg, FunctionRareData::offsetOfAllocationProfile() + ObjectAllocationProfile::offsetOfAllocator()), allocatorReg);
+ loadPtr(Address(rareDataReg, FunctionRareData::offsetOfAllocationProfile() + ObjectAllocationProfile::offsetOfStructure()), structureReg);
addSlowCase(branchTestPtr(Zero, allocatorReg));
+ loadPtr(cachedFunction, cachedFunctionReg);
+ Jump hasSeenMultipleCallees = branchPtr(Equal, cachedFunctionReg, TrustedImmPtr(JSCell::seenMultipleCalleeObjects()));
+ addSlowCase(branchPtr(NotEqual, calleeReg, cachedFunctionReg));
+ hasSeenMultipleCallees.link(this);
+
emitAllocateJSObject(allocatorReg, structureReg, resultReg, scratchReg);
emitStoreCell(currentInstruction[1].u.operand, resultReg);
}
void JIT::emitSlow_op_create_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
+ linkSlowCase(iter); // doesn't have rare data
linkSlowCase(iter); // doesn't have an allocation profile
linkSlowCase(iter); // allocation failed
+ linkSlowCase(iter); // cached function didn't match
JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_create_this);
slowPathCall.call();
slowPathCall.call();
}
+void JIT::emit_op_check_tdz(Instruction* currentInstruction)
+{
+ emitLoadTag(currentInstruction[1].u.operand, regT0);
+ addSlowCase(branch32(Equal, regT0, TrustedImm32(JSValue::EmptyValueTag)));
+}
+
+void JIT::emitSlow_op_check_tdz(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ linkSlowCase(iter);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_throw_tdz_error);
+ slowPathCall.call();
+}
+
void JIT::emit_op_profile_will_call(Instruction* currentInstruction)
{
load32(m_vm->enabledProfilerAddress(), regT0);
profilerDone.link(this);
}
-void JIT::emit_op_get_arguments_length(Instruction* currentInstruction)
+void JIT::emit_op_has_structure_property(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
- int argumentsRegister = currentInstruction[2].u.operand;
- addSlowCase(branch32(NotEqual, tagFor(argumentsRegister), TrustedImm32(JSValue::EmptyValueTag)));
- load32(payloadFor(JSStack::ArgumentCount), regT0);
- sub32(TrustedImm32(1), regT0);
- emitStoreInt32(dst, regT0);
+ int base = currentInstruction[2].u.operand;
+ int enumerator = currentInstruction[4].u.operand;
+
+ emitLoadPayload(base, regT0);
+ emitJumpSlowCaseIfNotJSCell(base);
+
+ emitLoadPayload(enumerator, regT1);
+
+ load32(Address(regT0, JSCell::structureIDOffset()), regT0);
+ addSlowCase(branch32(NotEqual, regT0, Address(regT1, JSPropertyNameEnumerator::cachedStructureIDOffset())));
+
+ move(TrustedImm32(1), regT0);
+ emitStoreBool(dst, regT0);
}
-void JIT::emitSlow_op_get_arguments_length(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::privateCompileHasIndexedProperty(ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode)
+{
+ Instruction* currentInstruction = m_codeBlock->instructions().begin() + byValInfo->bytecodeIndex;
+
+ PatchableJump badType;
+
+ // FIXME: Add support for other types like TypedArrays and Arguments.
+ // See https://bugs.webkit.org/show_bug.cgi?id=135033 and https://bugs.webkit.org/show_bug.cgi?id=135034.
+ JumpList slowCases = emitLoadForArrayMode(currentInstruction, arrayMode, badType);
+ move(TrustedImm32(1), regT0);
+ Jump done = jump();
+
+ LinkBuffer patchBuffer(*m_vm, *this, m_codeBlock);
+
+ patchBuffer.link(badType, CodeLocationLabel(MacroAssemblerCodePtr::createFromExecutableAddress(returnAddress.value())).labelAtOffset(byValInfo->returnAddressToSlowPath));
+ patchBuffer.link(slowCases, CodeLocationLabel(MacroAssemblerCodePtr::createFromExecutableAddress(returnAddress.value())).labelAtOffset(byValInfo->returnAddressToSlowPath));
+
+ patchBuffer.link(done, byValInfo->badTypeJump.labelAtOffset(byValInfo->badTypeJumpToDone));
+
+ byValInfo->stubRoutine = FINALIZE_CODE_FOR_STUB(
+ m_codeBlock, patchBuffer,
+ ("Baseline has_indexed_property stub for %s, return point %p", toCString(*m_codeBlock).data(), returnAddress.value()));
+
+ RepatchBuffer repatchBuffer(m_codeBlock);
+ repatchBuffer.relink(byValInfo->badTypeJump, CodeLocationLabel(byValInfo->stubRoutine->code().code()));
+ repatchBuffer.relinkCallerToFunction(returnAddress, FunctionPtr(operationHasIndexedPropertyGeneric));
+}
+
+void JIT::emit_op_has_indexed_property(Instruction* currentInstruction)
{
- linkSlowCase(iter);
int dst = currentInstruction[1].u.operand;
int base = currentInstruction[2].u.operand;
- callOperation(operationGetArgumentsLength, dst, base);
+ int property = currentInstruction[3].u.operand;
+ ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
+
+ emitLoadPayload(base, regT0);
+ emitJumpSlowCaseIfNotJSCell(base);
+
+ emitLoadPayload(property, regT1);
+
+ // This is technically incorrect - we're zero-extending an int32. On the hot path this doesn't matter.
+ // We check the value as if it was a uint32 against the m_vectorLength - which will always fail if
+ // number was signed since m_vectorLength is always less than intmax (since the total allocation
+ // size is always less than 4Gb). As such zero extending will have been correct (and extending the value
+ // to 64-bits is necessary since it's used in the address calculation. We zero extend rather than sign
+ // extending since it makes it easier to re-tag the value in the slow case.
+ zeroExtend32ToPtr(regT1, regT1);
+
+ emitArrayProfilingSiteWithCell(regT0, regT2, profile);
+ and32(TrustedImm32(IndexingShapeMask), regT2);
+
+ JITArrayMode mode = chooseArrayMode(profile);
+ PatchableJump badType;
+
+ // FIXME: Add support for other types like TypedArrays and Arguments.
+ // See https://bugs.webkit.org/show_bug.cgi?id=135033 and https://bugs.webkit.org/show_bug.cgi?id=135034.
+ JumpList slowCases = emitLoadForArrayMode(currentInstruction, mode, badType);
+ move(TrustedImm32(1), regT0);
+
+ addSlowCase(badType);
+ addSlowCase(slowCases);
+
+ Label done = label();
+
+ emitStoreBool(dst, regT0);
+
+ m_byValCompilationInfo.append(ByValCompilationInfo(m_bytecodeOffset, badType, mode, done));
}
-void JIT::emit_op_get_argument_by_val(Instruction* currentInstruction)
+void JIT::emitSlow_op_has_indexed_property(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
int dst = currentInstruction[1].u.operand;
- int argumentsRegister = currentInstruction[2].u.operand;
+ int base = currentInstruction[2].u.operand;
int property = currentInstruction[3].u.operand;
- addSlowCase(branch32(NotEqual, tagFor(argumentsRegister), TrustedImm32(JSValue::EmptyValueTag)));
- emitLoad(property, regT1, regT2);
- addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
- add32(TrustedImm32(1), regT2);
- // regT2 now contains the integer index of the argument we want, including this
- load32(payloadFor(JSStack::ArgumentCount), regT3);
- addSlowCase(branch32(AboveOrEqual, regT2, regT3));
+ ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
+
+ linkSlowCaseIfNotJSCell(iter, base); // base cell check
+ linkSlowCase(iter); // base array check
+ linkSlowCase(iter); // vector length check
+ linkSlowCase(iter); // empty value
+
+ Label slowPath = label();
+
+ emitLoad(base, regT1, regT0);
+ emitLoad(property, regT3, regT2);
+ Call call = callOperation(operationHasIndexedPropertyDefault, dst, regT1, regT0, regT3, regT2, profile);
+
+ m_byValCompilationInfo[m_byValInstructionIndex].slowPathTarget = slowPath;
+ m_byValCompilationInfo[m_byValInstructionIndex].returnAddress = call;
+ m_byValInstructionIndex++;
+}
+
+void JIT::emit_op_get_direct_pname(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ int base = currentInstruction[2].u.operand;
+ int index = currentInstruction[4].u.operand;
+ int enumerator = currentInstruction[5].u.operand;
+
+ // Check that base is a cell
+ emitLoadPayload(base, regT0);
+ emitJumpSlowCaseIfNotJSCell(base);
+
+ // Check the structure
+ emitLoadPayload(enumerator, regT1);
+ load32(Address(regT0, JSCell::structureIDOffset()), regT2);
+ addSlowCase(branch32(NotEqual, regT2, Address(regT1, JSPropertyNameEnumerator::cachedStructureIDOffset())));
+
+ // Compute the offset
+ emitLoadPayload(index, regT2);
+ // If index is less than the enumerator's cached inline storage, then it's an inline access
+ Jump outOfLineAccess = branch32(AboveOrEqual, regT2, Address(regT1, JSPropertyNameEnumerator::cachedInlineCapacityOffset()));
+ addPtr(TrustedImm32(JSObject::offsetOfInlineStorage()), regT0);
+ load32(BaseIndex(regT0, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT1);
+ load32(BaseIndex(regT0, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT0);
+
+ Jump done = jump();
+
+ // Otherwise it's out of line
+ outOfLineAccess.link(this);
+ loadPtr(Address(regT0, JSObject::butterflyOffset()), regT0);
+ sub32(Address(regT1, JSPropertyNameEnumerator::cachedInlineCapacityOffset()), regT2);
+ neg32(regT2);
+ int32_t offsetOfFirstProperty = static_cast<int32_t>(offsetInButterfly(firstOutOfLineOffset)) * sizeof(EncodedJSValue);
+ load32(BaseIndex(regT0, regT2, TimesEight, offsetOfFirstProperty + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT1);
+ load32(BaseIndex(regT0, regT2, TimesEight, offsetOfFirstProperty + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT0);
- loadPtr(BaseIndex(callFrameRegister, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload) + CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT0);
- loadPtr(BaseIndex(callFrameRegister, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag) + CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT1);
+ done.link(this);
emitValueProfilingSite();
emitStore(dst, regT1, regT0);
}
-void JIT::emitSlow_op_get_argument_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_get_direct_pname(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ int base = currentInstruction[2].u.operand;
+ linkSlowCaseIfNotJSCell(iter, base);
+ linkSlowCase(iter);
+
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_get_direct_pname);
+ slowPathCall.call();
+}
+
+void JIT::emit_op_enumerator_structure_pname(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
- int arguments = currentInstruction[2].u.operand;
- int property = currentInstruction[3].u.operand;
+ int enumerator = currentInstruction[2].u.operand;
+ int index = currentInstruction[3].u.operand;
- linkSlowCase(iter);
- Jump skipArgumentsCreation = jump();
+ emitLoadPayload(index, regT0);
+ emitLoadPayload(enumerator, regT1);
+ Jump inBounds = branch32(Below, regT0, Address(regT1, JSPropertyNameEnumerator::endStructurePropertyIndexOffset()));
- linkSlowCase(iter);
- linkSlowCase(iter);
+ move(TrustedImm32(JSValue::NullTag), regT2);
+ move(TrustedImm32(0), regT0);
+
+ Jump done = jump();
+ inBounds.link(this);
+
+ loadPtr(Address(regT1, JSPropertyNameEnumerator::cachedPropertyNamesVectorOffset()), regT1);
+ loadPtr(BaseIndex(regT1, regT0, timesPtr()), regT0);
+ move(TrustedImm32(JSValue::CellTag), regT2);
+
+ done.link(this);
+ emitStore(dst, regT2, regT0);
+}
+
+void JIT::emit_op_enumerator_generic_pname(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ int enumerator = currentInstruction[2].u.operand;
+ int index = currentInstruction[3].u.operand;
+
+ emitLoadPayload(index, regT0);
+ emitLoadPayload(enumerator, regT1);
+ Jump inBounds = branch32(Below, regT0, Address(regT1, JSPropertyNameEnumerator::endGenericPropertyIndexOffset()));
+
+ move(TrustedImm32(JSValue::NullTag), regT2);
+ move(TrustedImm32(0), regT0);
+
+ Jump done = jump();
+ inBounds.link(this);
- callOperation(operationCreateArguments);
- emitStoreCell(arguments, returnValueGPR);
- emitStoreCell(unmodifiedArgumentsRegister(VirtualRegister(arguments)).offset(), returnValueGPR);
+ loadPtr(Address(regT1, JSPropertyNameEnumerator::cachedPropertyNamesVectorOffset()), regT1);
+ loadPtr(BaseIndex(regT1, regT0, timesPtr()), regT0);
+ move(TrustedImm32(JSValue::CellTag), regT2);
- skipArgumentsCreation.link(this);
- emitLoad(arguments, regT1, regT0);
- emitLoad(property, regT3, regT2);
- callOperation(WithProfile, operationGetByValGeneric, dst, regT1, regT0, regT3, regT2);
+ done.link(this);
+ emitStore(dst, regT2, regT0);
+}
+
+void JIT::emit_op_profile_type(Instruction* currentInstruction)
+{
+ TypeLocation* cachedTypeLocation = currentInstruction[2].u.location;
+ int valueToProfile = currentInstruction[1].u.operand;
+
+ // Load payload in T0. Load tag in T3.
+ emitLoadPayload(valueToProfile, regT0);
+ emitLoadTag(valueToProfile, regT3);
+
+ JumpList jumpToEnd;
+
+ // Compile in a predictive type check, if possible, to see if we can skip writing to the log.
+ // These typechecks are inlined to match those of the 32-bit JSValue type checks.
+ if (cachedTypeLocation->m_lastSeenType == TypeUndefined)
+ jumpToEnd.append(branch32(Equal, regT3, TrustedImm32(JSValue::UndefinedTag)));
+ else if (cachedTypeLocation->m_lastSeenType == TypeNull)
+ jumpToEnd.append(branch32(Equal, regT3, TrustedImm32(JSValue::NullTag)));
+ else if (cachedTypeLocation->m_lastSeenType == TypeBoolean)
+ jumpToEnd.append(branch32(Equal, regT3, TrustedImm32(JSValue::BooleanTag)));
+ else if (cachedTypeLocation->m_lastSeenType == TypeMachineInt)
+ jumpToEnd.append(branch32(Equal, regT3, TrustedImm32(JSValue::Int32Tag)));
+ else if (cachedTypeLocation->m_lastSeenType == TypeNumber) {
+ jumpToEnd.append(branch32(Below, regT3, TrustedImm32(JSValue::LowestTag)));
+ jumpToEnd.append(branch32(Equal, regT3, TrustedImm32(JSValue::Int32Tag)));
+ } else if (cachedTypeLocation->m_lastSeenType == TypeString) {
+ Jump isNotCell = branch32(NotEqual, regT3, TrustedImm32(JSValue::CellTag));
+ jumpToEnd.append(branch8(Equal, Address(regT0, JSCell::typeInfoTypeOffset()), TrustedImm32(StringType)));
+ isNotCell.link(this);
+ }
+
+ // Load the type profiling log into T2.
+ TypeProfilerLog* cachedTypeProfilerLog = m_vm->typeProfilerLog();
+ move(TrustedImmPtr(cachedTypeProfilerLog), regT2);
+
+ // Load the next log entry into T1.
+ loadPtr(Address(regT2, TypeProfilerLog::currentLogEntryOffset()), regT1);
+
+ // Store the JSValue onto the log entry.
+ store32(regT0, Address(regT1, TypeProfilerLog::LogEntry::valueOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.payload)));
+ store32(regT3, Address(regT1, TypeProfilerLog::LogEntry::valueOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.tag)));
+
+ // Store the structureID of the cell if argument is a cell, otherwise, store 0 on the log entry.
+ Jump notCell = branch32(NotEqual, regT3, TrustedImm32(JSValue::CellTag));
+ load32(Address(regT0, JSCell::structureIDOffset()), regT0);
+ store32(regT0, Address(regT1, TypeProfilerLog::LogEntry::structureIDOffset()));
+ Jump skipNotCell = jump();
+ notCell.link(this);
+ store32(TrustedImm32(0), Address(regT1, TypeProfilerLog::LogEntry::structureIDOffset()));
+ skipNotCell.link(this);
+
+ // Store the typeLocation on the log entry.
+ move(TrustedImmPtr(cachedTypeLocation), regT0);
+ store32(regT0, Address(regT1, TypeProfilerLog::LogEntry::locationOffset()));
+
+ // Increment the current log entry.
+ addPtr(TrustedImm32(sizeof(TypeProfilerLog::LogEntry)), regT1);
+ store32(regT1, Address(regT2, TypeProfilerLog::currentLogEntryOffset()));
+ jumpToEnd.append(branchPtr(NotEqual, regT1, TrustedImmPtr(cachedTypeProfilerLog->logEndPtr())));
+ // Clear the log if we're at the end of the log.
+ callOperation(operationProcessTypeProfilerLog);
+
+ jumpToEnd.link(this);
}
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff