/*
- * Copyright (C) 2009, 2012, 2013 Apple Inc. All rights reserved.
+ * Copyright (C) 2009, 2012-2015 Apple Inc. All rights reserved.
* Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
*
* Redistribution and use in source and binary forms, with or without
#if ENABLE(JIT)
#include "JIT.h"
-#include "Arguments.h"
+#include "BasicBlockLocation.h"
#include "CopiedSpaceInlines.h"
#include "Debugger.h"
+#include "Exception.h"
#include "Heap.h"
#include "JITInlines.h"
#include "JSArray.h"
#include "JSCell.h"
#include "JSFunction.h"
-#include "JSPropertyNameIterator.h"
+#include "JSNameScope.h"
+#include "JSPropertyNameEnumerator.h"
+#include "LinkBuffer.h"
#include "MaxFrameExtentForSlowPathCall.h"
+#include "RepatchBuffer.h"
#include "SlowPathCall.h"
+#include "TypeLocation.h"
+#include "TypeProfilerLog.h"
#include "VirtualRegister.h"
namespace JSC {
emitPutVirtualRegister(dst);
}
-void JIT::emit_op_captured_mov(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
- int src = currentInstruction[2].u.operand;
-
- emitGetVirtualRegister(src, regT0);
- emitNotifyWrite(regT0, regT1, currentInstruction[3].u.watchpointSet);
- emitPutVirtualRegister(dst);
-}
void JIT::emit_op_end(Instruction* currentInstruction)
{
emitPutVirtualRegister(dst);
}
-void JIT::emit_op_tear_off_activation(Instruction* currentInstruction)
-{
- int activation = currentInstruction[1].u.operand;
- Jump activationNotCreated = branchTest64(Zero, addressFor(activation));
- emitGetVirtualRegister(activation, regT0);
- callOperation(operationTearOffActivation, regT0);
- activationNotCreated.link(this);
-}
-
-void JIT::emit_op_tear_off_arguments(Instruction* currentInstruction)
+void JIT::emit_op_is_object(Instruction* currentInstruction)
{
- int arguments = currentInstruction[1].u.operand;
- int activation = currentInstruction[2].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
- Jump argsNotCreated = branchTest64(Zero, Address(callFrameRegister, sizeof(Register) * (unmodifiedArgumentsRegister(VirtualRegister(arguments)).offset())));
- emitGetVirtualRegister(unmodifiedArgumentsRegister(VirtualRegister(arguments)).offset(), regT0);
- emitGetVirtualRegister(activation, regT1);
- callOperation(operationTearOffArguments, regT0, regT1);
- argsNotCreated.link(this);
-}
+ emitGetVirtualRegister(value, regT0);
+ Jump isNotCell = emitJumpIfNotJSCell(regT0);
-void JIT::emit_op_ret(Instruction* currentInstruction)
-{
- ASSERT(callFrameRegister != regT1);
- ASSERT(regT1 != returnValueGPR);
- ASSERT(returnValueGPR != callFrameRegister);
+ compare8(AboveOrEqual, Address(regT0, JSCell::typeInfoTypeOffset()), TrustedImm32(ObjectType), regT0);
+ emitTagAsBoolImmediate(regT0);
+ Jump done = jump();
- // Return the result in %eax.
- emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueGPR);
+ isNotCell.link(this);
+ move(TrustedImm32(ValueFalse), regT0);
- checkStackPointerAlignment();
- emitFunctionEpilogue();
- ret();
+ done.link(this);
+ emitPutVirtualRegister(dst);
}
-void JIT::emit_op_ret_object_or_this(Instruction* currentInstruction)
+void JIT::emit_op_ret(Instruction* currentInstruction)
{
ASSERT(callFrameRegister != regT1);
ASSERT(regT1 != returnValueGPR);
// Return the result in %eax.
emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueGPR);
- Jump notJSCell = emitJumpIfNotJSCell(returnValueGPR);
- Jump notObject = emitJumpIfCellNotObject(returnValueGPR);
-
- // Return.
- emitFunctionEpilogue();
- ret();
- // Return 'this' in %eax.
- notJSCell.link(this);
- notObject.link(this);
- emitGetVirtualRegister(currentInstruction[2].u.operand, returnValueGPR);
-
- // Return.
+ checkStackPointerAlignment();
emitFunctionEpilogue();
ret();
}
emitGetVirtualRegister(src, regT0);
Jump isImm = emitJumpIfNotJSCell(regT0);
- addSlowCase(branchStructure(NotEqual,
- Address(regT0, JSCell::structureIDOffset()),
- m_vm->stringStructure.get()));
+ addSlowCase(emitJumpIfCellObject(regT0));
isImm.link(this);
if (dst != src)
jumpToExceptionHandler();
}
-void JIT::emit_op_get_pnames(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;
-
- emitGetVirtualRegister(base, regT0);
- if (!m_codeBlock->isKnownNotImmediate(base))
- isNotObject.append(emitJumpIfNotJSCell(regT0));
- if (base != m_codeBlock->thisRegister().offset() || 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);
- store64(tagTypeNumberRegister, addressFor(i));
- store32(TrustedImm32(Int32Tag), intTagFor(size));
- store32(regT3, intPayloadFor(size));
- Jump end = jump();
-
- isNotObject.link(this);
- move(regT0, regT1);
- and32(TrustedImm32(~TagBitUndefined), regT1);
- addJump(branch32(Equal, regT1, TrustedImm32(ValueNull)), breakTarget);
- callOperation(operationToObject, base, regT0);
- jump().linkTo(isObject, this);
-
- end.link(this);
-}
-
-void JIT::emit_op_next_pname(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 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(addressFor(it), regT1);
- loadPtr(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStrings)), regT2);
-
- load64(BaseIndex(regT2, regT0, TimesEight), regT2);
-
- emitPutVirtualRegister(dst, regT2);
-
- // Increment i
- add32(TrustedImm32(1), regT0);
- store32(regT0, intPayloadFor(i));
-
- // Verify that i is valid:
- emitGetVirtualRegister(base, regT0);
-
- // Test base's structure
- emitLoadStructure(regT0, regT2, regT3);
- 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);
- load64(Address(regT2, Structure::prototypeOffset()), regT2);
- callHasProperty.append(emitJumpIfNotJSCell(regT2));
- emitLoadStructure(regT2, regT2, regT1);
- callHasProperty.append(branchPtr(NotEqual, regT2, Address(regT3)));
- addPtr(TrustedImm32(sizeof(Structure*)), regT3);
- branchTestPtr(NonZero, Address(regT3)).linkTo(checkPrototype, this);
-
- // Continue loop.
- addJump(jump(), target);
-
- // Slow case: Ask the object if i is valid.
- callHasProperty.link(this);
- emitGetVirtualRegister(dst, regT1);
- callOperation(operationHasProperty, regT0, regT1);
-
- // Test for valid key.
- addJump(branchTest32(NonZero, regT0), target);
- jump().linkTo(begin, this);
-
- // End of loop.
- end.link(this);
+ emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
+ callOperation(operationPushWithScope, dst, regT0);
}
-void JIT::emit_op_push_with_scope(Instruction* currentInstruction)
+void JIT::emit_op_pop_scope(Instruction* currentInstruction)
{
- emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
- callOperation(operationPushWithScope, regT0);
-}
+ int scope = currentInstruction[1].u.operand;
-void JIT::emit_op_pop_scope(Instruction*)
-{
- callOperation(operationPopScope);
+ callOperation(operationPopScope, scope);
}
void JIT::compileOpStrictEq(Instruction* currentInstruction, CompileOpStrictEqType type)
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
+void JIT::emit_op_to_string(Instruction* currentInstruction)
+{
+ int srcVReg = currentInstruction[2].u.operand;
+ emitGetVirtualRegister(srcVReg, regT0);
+
+ addSlowCase(emitJumpIfNotJSCell(regT0));
+ addSlowCase(branch8(NotEqual, Address(regT0, JSCell::typeInfoTypeOffset()), TrustedImm32(StringType)));
+
+ emitPutVirtualRegister(currentInstruction[1].u.operand);
+}
+
void JIT::emit_op_push_name_scope(Instruction* currentInstruction)
{
+ int dst = currentInstruction[1].u.operand;
emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
- callOperation(operationPushNameScope, &m_codeBlock->identifier(currentInstruction[1].u.operand), regT0, currentInstruction[3].u.operand);
+ if (currentInstruction[4].u.operand == JSNameScope::CatchScope) {
+ callOperation(operationPushCatchScope, dst, jsCast<SymbolTable*>(getConstantOperand(currentInstruction[3].u.operand)), regT0);
+ return;
+ }
+
+ RELEASE_ASSERT(currentInstruction[4].u.operand == JSNameScope::FunctionNameScope);
+ callOperation(operationPushFunctionNameScope, dst, jsCast<SymbolTable*>(getConstantOperand(currentInstruction[3].u.operand)), regT0);
}
void JIT::emit_op_catch(Instruction* currentInstruction)
move(TrustedImmPtr(m_vm), regT3);
load64(Address(regT3, VM::callFrameForThrowOffset()), callFrameRegister);
+ load64(Address(regT3, VM::vmEntryFrameForThrowOffset()), regT0);
+ store64(regT0, Address(regT3, VM::topVMEntryFrameOffset()));
addPtr(TrustedImm32(stackPointerOffsetFor(codeBlock()) * sizeof(Register)), callFrameRegister, stackPointerRegister);
load64(Address(regT3, VM::exceptionOffset()), regT0);
store64(TrustedImm64(JSValue::encode(JSValue())), Address(regT3, VM::exceptionOffset()));
emitPutVirtualRegister(currentInstruction[1].u.operand);
+
+ load64(Address(regT0, Exception::valueOffset()), regT0);
+ emitPutVirtualRegister(currentInstruction[2].u.operand);
}
void JIT::emit_op_switch_imm(Instruction* currentInstruction)
emitEnterOptimizationCheck();
}
-void JIT::emit_op_create_activation(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
-
- Jump activationCreated = branchTest64(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
- callOperation(operationCreateActivation, 0);
- emitStoreCell(dst, 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 scope = currentInstruction[2].u.operand;
- Jump argsCreated = branchTest64(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
-
- callOperation(operationCreateArguments);
+ emitGetVirtualRegister(scope, regT0);
+ callOperation(operationCreateActivation, regT0);
emitStoreCell(dst, returnValueGPR);
- emitStoreCell(unmodifiedArgumentsRegister(VirtualRegister(dst)), returnValueGPR);
-
- argsCreated.link(this);
+ 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;
-
- store64(TrustedImm64((int64_t)0), Address(callFrameRegister, sizeof(Register) * dst));
+ emitGetFromCallFrameHeaderPtr(JSStack::Callee, regT0);
+ loadPtr(Address(regT0, JSFunction::offsetOfScopeChain()), regT0);
+ emitStoreCell(dst, regT0);
}
void JIT::emit_op_to_this(Instruction* currentInstruction)
addSlowCase(branch32(NotEqual, Address(regT1, JSCell::structureIDOffset()), regT2));
}
-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));
-
- emitPutVirtualRegister(result);
-}
-
-void JIT::emitSlow_op_get_callee(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- linkSlowCase(iter);
-
- JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_get_callee);
- slowPathCall.call();
-}
-
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;
emitGetVirtualRegister(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);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
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();
}
+void JIT::emit_op_check_tdz(Instruction* currentInstruction)
+{
+ emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
+ addSlowCase(branchTest64(Zero, regT0));
+}
+
+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)
{
Jump profilerDone = branchTestPtr(Zero, AbsoluteAddress(m_vm->enabledProfilerAddress()));
slowPathCall.call();
}
-void JIT::emit_op_get_arguments_length(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
- int argumentsRegister = currentInstruction[2].u.operand;
- addSlowCase(branchTest64(NonZero, addressFor(argumentsRegister)));
- emitGetFromCallFrameHeader32(JSStack::ArgumentCount, regT0);
- sub32(TrustedImm32(1), regT0);
- emitFastArithReTagImmediate(regT0, regT0);
- emitPutVirtualRegister(dst, regT0);
-}
-
-void JIT::emitSlow_op_get_arguments_length(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- linkSlowCase(iter);
- int dst = currentInstruction[1].u.operand;
- int base = currentInstruction[2].u.operand;
- callOperation(operationGetArgumentsLength, dst, base);
-}
-
-void JIT::emit_op_get_argument_by_val(Instruction* currentInstruction)
+void JIT::emitSlow_op_to_string(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- int dst = currentInstruction[1].u.operand;
- int argumentsRegister = currentInstruction[2].u.operand;
- int property = currentInstruction[3].u.operand;
- addSlowCase(branchTest64(NonZero, addressFor(argumentsRegister)));
- emitGetVirtualRegister(property, regT1);
- addSlowCase(emitJumpIfNotImmediateInteger(regT1));
- add32(TrustedImm32(1), regT1);
- // regT1 now contains the integer index of the argument we want, including this
- emitGetFromCallFrameHeader32(JSStack::ArgumentCount, regT2);
- addSlowCase(branch32(AboveOrEqual, regT1, regT2));
-
- signExtend32ToPtr(regT1, regT1);
- load64(BaseIndex(callFrameRegister, regT1, TimesEight, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT0);
- emitValueProfilingSite();
- emitPutVirtualRegister(dst, regT0);
-}
+ linkSlowCase(iter); // Not JSCell.
+ linkSlowCase(iter); // Not JSString.
-void JIT::emitSlow_op_get_argument_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- int dst = currentInstruction[1].u.operand;
- int arguments = currentInstruction[2].u.operand;
- int property = currentInstruction[3].u.operand;
-
- linkSlowCase(iter);
- Jump skipArgumentsCreation = jump();
-
- linkSlowCase(iter);
- linkSlowCase(iter);
- callOperation(operationCreateArguments);
- emitStoreCell(arguments, returnValueGPR);
- emitStoreCell(unmodifiedArgumentsRegister(VirtualRegister(arguments)), returnValueGPR);
-
- skipArgumentsCreation.link(this);
- emitGetVirtualRegister(arguments, regT0);
- emitGetVirtualRegister(property, regT1);
- callOperation(WithProfile, operationGetByValGeneric, dst, regT0, regT1);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_to_string);
+ slowPathCall.call();
}
#endif // USE(JSVALUE64)
-void JIT::emit_op_touch_entry(Instruction* currentInstruction)
-{
- if (m_codeBlock->symbolTable()->m_functionEnteredOnce.hasBeenInvalidated())
- return;
-
- JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_touch_entry);
- slowPathCall.call();
-}
-
void JIT::emit_op_loop_hint(Instruction*)
{
// Emit the JIT optimization check:
{
Jump lazyJump;
int dst = currentInstruction[1].u.operand;
- if (currentInstruction[3].u.operand) {
-#if USE(JSVALUE32_64)
- lazyJump = branch32(NotEqual, tagFor(dst), TrustedImm32(JSValue::EmptyValueTag));
+
+#if USE(JSVALUE64)
+ emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
#else
- lazyJump = branchTest64(NonZero, addressFor(dst));
+ emitLoadPayload(currentInstruction[2].u.operand, regT0);
#endif
- }
-
- FunctionExecutable* funcExec = m_codeBlock->functionDecl(currentInstruction[2].u.operand);
- callOperation(operationNewFunction, dst, funcExec);
-
- if (currentInstruction[3].u.operand)
- lazyJump.link(this);
-}
-
-void JIT::emit_op_new_captured_func(Instruction* currentInstruction)
-{
- JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_new_captured_func);
- slowPathCall.call();
+ FunctionExecutable* funcExec = m_codeBlock->functionDecl(currentInstruction[3].u.operand);
+ callOperation(operationNewFunction, dst, regT0, funcExec);
}
void JIT::emit_op_new_func_exp(Instruction* currentInstruction)
{
+ Jump notUndefinedScope;
int dst = currentInstruction[1].u.operand;
- FunctionExecutable* funcExpr = m_codeBlock->functionExpr(currentInstruction[2].u.operand);
- callOperation(operationNewFunction, dst, funcExpr);
+#if USE(JSVALUE64)
+ emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
+ notUndefinedScope = branch64(NotEqual, regT0, TrustedImm64(JSValue::encode(jsUndefined())));
+ store64(TrustedImm64(JSValue::encode(jsUndefined())), Address(callFrameRegister, sizeof(Register) * dst));
+#else
+ emitLoadPayload(currentInstruction[2].u.operand, regT0);
+ notUndefinedScope = branch32(NotEqual, tagFor(currentInstruction[2].u.operand), TrustedImm32(JSValue::UndefinedTag));
+ emitStore(dst, jsUndefined());
+#endif
+
+ Jump done = jump();
+ notUndefinedScope.link(this);
+
+ FunctionExecutable* funcExpr = m_codeBlock->functionExpr(currentInstruction[3].u.operand);
+ callOperation(operationNewFunction, dst, regT0, funcExpr);
+ done.link(this);
}
void JIT::emit_op_new_array(Instruction* currentInstruction)
callOperation(operationNewArrayBufferWithProfile, dst, currentInstruction[4].u.arrayAllocationProfile, values, size);
}
-void JIT::emitSlow_op_captured_mov(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+#if USE(JSVALUE64)
+void JIT::emit_op_has_structure_property(Instruction* currentInstruction)
{
- VariableWatchpointSet* set = currentInstruction[3].u.watchpointSet;
- if (!set || set->state() == IsInvalidated)
- return;
-#if USE(JSVALUE32_64)
+ int dst = currentInstruction[1].u.operand;
+ int base = currentInstruction[2].u.operand;
+ int enumerator = currentInstruction[4].u.operand;
+
+ emitGetVirtualRegister(base, regT0);
+ emitGetVirtualRegister(enumerator, regT1);
+ emitJumpSlowCaseIfNotJSCell(regT0, base);
+
+ load32(Address(regT0, JSCell::structureIDOffset()), regT0);
+ addSlowCase(branch32(NotEqual, regT0, Address(regT1, JSPropertyNameEnumerator::cachedStructureIDOffset())));
+
+ move(TrustedImm64(JSValue::encode(jsBoolean(true))), regT0);
+ emitPutVirtualRegister(dst);
+}
+
+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(TrustedImm64(JSValue::encode(jsBoolean(true))), 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)
+{
+ int dst = currentInstruction[1].u.operand;
+ int base = currentInstruction[2].u.operand;
+ int property = currentInstruction[3].u.operand;
+ ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
+
+ emitGetVirtualRegisters(base, regT0, 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);
+
+ emitJumpSlowCaseIfNotJSCell(regT0, base);
+ 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(TrustedImm64(JSValue::encode(jsBoolean(true))), regT0);
+
+ addSlowCase(badType);
+ addSlowCase(slowCases);
+
+ Label done = label();
+
+ emitPutVirtualRegister(dst);
+
+ m_byValCompilationInfo.append(ByValCompilationInfo(m_bytecodeOffset, badType, mode, done));
+}
+
+void JIT::emitSlow_op_has_indexed_property(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ int dst = currentInstruction[1].u.operand;
+ int base = currentInstruction[2].u.operand;
+ int property = currentInstruction[3].u.operand;
+ 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();
+
+ emitGetVirtualRegister(base, regT0);
+ emitGetVirtualRegister(property, regT1);
+ Call call = callOperation(operationHasIndexedPropertyDefault, dst, regT0, regT1, 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
+ emitGetVirtualRegister(base, regT0);
+ emitJumpSlowCaseIfNotJSCell(regT0, base);
+
+ // Check the structure
+ emitGetVirtualRegister(enumerator, regT2);
+ load32(Address(regT0, JSCell::structureIDOffset()), regT1);
+ addSlowCase(branch32(NotEqual, regT1, Address(regT2, JSPropertyNameEnumerator::cachedStructureIDOffset())));
+
+ // Compute the offset
+ emitGetVirtualRegister(index, regT1);
+ // If index is less than the enumerator's cached inline storage, then it's an inline access
+ Jump outOfLineAccess = branch32(AboveOrEqual, regT1, Address(regT2, JSPropertyNameEnumerator::cachedInlineCapacityOffset()));
+ addPtr(TrustedImm32(JSObject::offsetOfInlineStorage()), regT0);
+ signExtend32ToPtr(regT1, regT1);
+ load64(BaseIndex(regT0, regT1, TimesEight), regT0);
+
+ Jump done = jump();
+
+ // Otherwise it's out of line
+ outOfLineAccess.link(this);
+ loadPtr(Address(regT0, JSObject::butterflyOffset()), regT0);
+ sub32(Address(regT2, JSPropertyNameEnumerator::cachedInlineCapacityOffset()), regT1);
+ neg32(regT1);
+ signExtend32ToPtr(regT1, regT1);
+ int32_t offsetOfFirstProperty = static_cast<int32_t>(offsetInButterfly(firstOutOfLineOffset)) * sizeof(EncodedJSValue);
+ load64(BaseIndex(regT0, regT1, TimesEight, offsetOfFirstProperty), regT0);
+
+ done.link(this);
+ emitValueProfilingSite();
+ emitPutVirtualRegister(dst, regT0);
+}
+
+void JIT::emitSlow_op_get_direct_pname(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ int base = currentInstruction[2].u.operand;
+ linkSlowCaseIfNotJSCell(iter, base);
linkSlowCase(iter);
-#endif
+
+ 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 enumerator = currentInstruction[2].u.operand;
+ int index = currentInstruction[3].u.operand;
+
+ emitGetVirtualRegister(index, regT0);
+ emitGetVirtualRegister(enumerator, regT1);
+ Jump inBounds = branch32(Below, regT0, Address(regT1, JSPropertyNameEnumerator::endStructurePropertyIndexOffset()));
+
+ move(TrustedImm64(JSValue::encode(jsNull())), regT0);
+
+ Jump done = jump();
+ inBounds.link(this);
+
+ loadPtr(Address(regT1, JSPropertyNameEnumerator::cachedPropertyNamesVectorOffset()), regT1);
+ signExtend32ToPtr(regT0, regT0);
+ load64(BaseIndex(regT1, regT0, TimesEight), regT0);
+
+ done.link(this);
+ emitPutVirtualRegister(dst);
+}
+
+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;
+
+ emitGetVirtualRegister(index, regT0);
+ emitGetVirtualRegister(enumerator, regT1);
+ Jump inBounds = branch32(Below, regT0, Address(regT1, JSPropertyNameEnumerator::endGenericPropertyIndexOffset()));
+
+ move(TrustedImm64(JSValue::encode(jsNull())), regT0);
+
+ Jump done = jump();
+ inBounds.link(this);
+
+ loadPtr(Address(regT1, JSPropertyNameEnumerator::cachedPropertyNamesVectorOffset()), regT1);
+ signExtend32ToPtr(regT0, regT0);
+ load64(BaseIndex(regT1, regT0, TimesEight), regT0);
+
+ done.link(this);
+ emitPutVirtualRegister(dst);
+}
+
+void JIT::emit_op_profile_type(Instruction* currentInstruction)
+{
+ TypeLocation* cachedTypeLocation = currentInstruction[2].u.location;
+ int valueToProfile = currentInstruction[1].u.operand;
+
+ emitGetVirtualRegister(valueToProfile, regT0);
+
+ 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 64-bit JSValue type checks.
+ if (cachedTypeLocation->m_lastSeenType == TypeUndefined)
+ jumpToEnd.append(branch64(Equal, regT0, TrustedImm64(JSValue::encode(jsUndefined()))));
+ else if (cachedTypeLocation->m_lastSeenType == TypeNull)
+ jumpToEnd.append(branch64(Equal, regT0, TrustedImm64(JSValue::encode(jsNull()))));
+ else if (cachedTypeLocation->m_lastSeenType == TypeBoolean) {
+ move(regT0, regT1);
+ and64(TrustedImm32(~1), regT1);
+ jumpToEnd.append(branch64(Equal, regT1, TrustedImm64(ValueFalse)));
+ } else if (cachedTypeLocation->m_lastSeenType == TypeMachineInt)
+ jumpToEnd.append(emitJumpIfImmediateInteger(regT0));
+ else if (cachedTypeLocation->m_lastSeenType == TypeNumber)
+ jumpToEnd.append(emitJumpIfImmediateNumber(regT0));
+ else if (cachedTypeLocation->m_lastSeenType == TypeString) {
+ Jump isNotCell = emitJumpIfNotJSCell(regT0);
+ 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.
+ store64(regT0, Address(regT1, TypeProfilerLog::LogEntry::valueOffset()));
+
+ // Store the structureID of the cell if T0 is a cell, otherwise, store 0 on the log entry.
+ Jump notCell = emitJumpIfNotJSCell(regT0);
+ load32(Address(regT0, JSCell::structureIDOffset()), regT0);
+ store32(regT0, Address(regT1, TypeProfilerLog::LogEntry::structureIDOffset()));
+ Jump skipIsCell = jump();
+ notCell.link(this);
+ store32(TrustedImm32(0), Address(regT1, TypeProfilerLog::LogEntry::structureIDOffset()));
+ skipIsCell.link(this);
+
+ // Store the typeLocation on the log entry.
+ move(TrustedImmPtr(cachedTypeLocation), regT0);
+ store64(regT0, Address(regT1, TypeProfilerLog::LogEntry::locationOffset()));
+
+ // Increment the current log entry.
+ addPtr(TrustedImm32(sizeof(TypeProfilerLog::LogEntry)), regT1);
+ store64(regT1, Address(regT2, TypeProfilerLog::currentLogEntryOffset()));
+ Jump skipClearLog = branchPtr(NotEqual, regT1, TrustedImmPtr(cachedTypeProfilerLog->logEndPtr()));
+ // Clear the log if we're at the end of the log.
+ callOperation(operationProcessTypeProfilerLog);
+ skipClearLog.link(this);
+
+ jumpToEnd.link(this);
+}
+
+#endif // USE(JSVALUE64)
+
+void JIT::emit_op_get_enumerable_length(Instruction* currentInstruction)
+{
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_get_enumerable_length);
+ slowPathCall.call();
+}
+
+void JIT::emitSlow_op_has_structure_property(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
linkSlowCase(iter);
- JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_captured_mov);
+ linkSlowCase(iter);
+
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_has_structure_property);
+ slowPathCall.call();
+}
+
+void JIT::emit_op_has_generic_property(Instruction* currentInstruction)
+{
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_has_generic_property);
+ slowPathCall.call();
+}
+
+void JIT::emit_op_get_property_enumerator(Instruction* currentInstruction)
+{
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_get_property_enumerator);
+ slowPathCall.call();
+}
+
+void JIT::emit_op_to_index_string(Instruction* currentInstruction)
+{
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_to_index_string);
+ slowPathCall.call();
+}
+
+void JIT::emit_op_profile_control_flow(Instruction* currentInstruction)
+{
+ BasicBlockLocation* basicBlockLocation = currentInstruction[1].u.basicBlockLocation;
+ if (!basicBlockLocation->hasExecuted())
+ basicBlockLocation->emitExecuteCode(*this, regT1);
+}
+
+void JIT::emit_op_create_direct_arguments(Instruction* currentInstruction)
+{
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_create_direct_arguments);
+ slowPathCall.call();
+}
+
+void JIT::emit_op_create_scoped_arguments(Instruction* currentInstruction)
+{
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_create_scoped_arguments);
+ slowPathCall.call();
+}
+
+void JIT::emit_op_create_out_of_band_arguments(Instruction* currentInstruction)
+{
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_create_out_of_band_arguments);
slowPathCall.call();
}
projects / apple / javascriptcore.git / blobdiff