diff options
Diffstat (limited to 'src/qml/jit/qv4isel_masm.cpp')
| -rw-r--r-- | src/qml/jit/qv4isel_masm.cpp | 1684 |
1 files changed, 0 insertions, 1684 deletions
diff --git a/src/qml/jit/qv4isel_masm.cpp b/src/qml/jit/qv4isel_masm.cpp deleted file mode 100644 index 7784eb364e..0000000000 --- a/src/qml/jit/qv4isel_masm.cpp +++ /dev/null @@ -1,1684 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtQml module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qv4isel_masm_p.h" -#include "qv4runtime_p.h" -#include "qv4lookup_p.h" -#include "qv4ssa_p.h" -#include "qv4regalloc_p.h" -#include "qv4assembler_p.h" -#include "qv4unop_p.h" -#include "qv4binop_p.h" - -#include <QtCore/QBuffer> -#include <QtCore/QCoreApplication> - -#include <assembler/LinkBuffer.h> -#include <WTFStubs.h> - -#include <iostream> - -#if ENABLE(ASSEMBLER) - -#if USE(UDIS86) -# include <udis86.h> -#endif - -using namespace QV4; -using namespace QV4::JIT; - - -template <typename JITAssembler> -InstructionSelection<JITAssembler>::InstructionSelection(QQmlEnginePrivate *qmlEngine, QV4::ExecutableAllocator *execAllocator, IR::Module *module, Compiler::JSUnitGenerator *jsGenerator, EvalISelFactory *iselFactory) - : EvalInstructionSelection(execAllocator, module, jsGenerator, iselFactory) - , _block(0) - , _as(0) - , compilationUnit(new CompilationUnit) - , qmlEngine(qmlEngine) -{ - compilationUnit->codeRefs.resize(module->functions.size()); - module->unitFlags |= QV4::CompiledData::Unit::ContainsMachineCode; -} - -template <typename JITAssembler> -InstructionSelection<JITAssembler>::~InstructionSelection() -{ - delete _as; -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::run(int functionIndex) -{ - IR::Function *function = irModule->functions[functionIndex]; - qSwap(_function, function); - - IR::Optimizer opt(_function); - opt.run(qmlEngine); - - static const bool withRegisterAllocator = qEnvironmentVariableIsEmpty("QV4_NO_REGALLOC"); - if (JITTargetPlatform::RegAllocIsSupported && opt.isInSSA() && withRegisterAllocator) { - RegisterAllocator regalloc(JITTargetPlatform::getRegisterInfo()); - regalloc.run(_function, opt); - calculateRegistersToSave(regalloc.usedRegisters()); - } else { - if (opt.isInSSA()) - // No register allocator available for this platform, or env. var was set, so: - opt.convertOutOfSSA(); - ConvertTemps().toStackSlots(_function); - IR::Optimizer::showMeTheCode(_function, "After stack slot allocation"); - calculateRegistersToSave(JITTargetPlatform::getRegisterInfo()); // FIXME: this saves all registers. We can probably do with a subset: those that are not used by the register allocator. - } - BitVector removableJumps = opt.calculateOptionalJumps(); - qSwap(_removableJumps, removableJumps); - - JITAssembler* oldAssembler = _as; - _as = new JITAssembler(jsGenerator, _function, executableAllocator); - _as->setStackLayout(6, // 6 == max argc for calls to built-ins with an argument array - regularRegistersToSave.size(), - fpRegistersToSave.size()); - _as->enterStandardStackFrame(regularRegistersToSave, fpRegistersToSave); - - if (JITTargetPlatform::RegisterArgumentCount > 0) - _as->move(_as->registerForArgument(0), JITTargetPlatform::EngineRegister); - else - _as->loadPtr(addressForArgument(0), JITTargetPlatform::EngineRegister); - - _as->initializeLocalVariables(); - - int lastLine = 0; - for (int i = 0, ei = _function->basicBlockCount(); i != ei; ++i) { - IR::BasicBlock *nextBlock = (i < ei - 1) ? _function->basicBlock(i + 1) : 0; - _block = _function->basicBlock(i); - if (_block->isRemoved()) - continue; - _as->registerBlock(_block, nextBlock); - - for (IR::Stmt *s : _block->statements()) { - if (s->location.isValid()) { - if (int(s->location.startLine) != lastLine) { - _as->loadPtr(Address(JITTargetPlatform::EngineRegister, JITAssembler::targetStructureOffset(offsetof(QV4::EngineBase, current))), JITTargetPlatform::ScratchRegister); - Address lineAddr(JITTargetPlatform::ScratchRegister, JITAssembler::targetStructureOffset(Heap::ExecutionContextData::baseOffset + offsetof(Heap::ExecutionContextData, lineNumber))); - _as->store32(TrustedImm32(s->location.startLine), lineAddr); - lastLine = s->location.startLine; - } - } - visit(s); - } - } - - if (!_as->exceptionReturnLabel.isSet()) - visitRet(0); - - int dummySize; - JSC::MacroAssemblerCodeRef codeRef =_as->link(&dummySize); - compilationUnit->codeRefs[functionIndex] = codeRef; - - qSwap(_function, function); - delete _as; - _as = oldAssembler; - qSwap(_removableJumps, removableJumps); -} - -template <typename JITAssembler> -QQmlRefPointer<QV4::CompiledData::CompilationUnit> InstructionSelection<JITAssembler>::backendCompileStep() -{ - QQmlRefPointer<QV4::CompiledData::CompilationUnit> result; - result.adopt(compilationUnit.take()); - return result; -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinInvalid(IR::Name *func, IR::ExprList *args, IR::Expr *result) -{ - prepareCallData(args, 0); - - if (useFastLookups && func->global) { - uint index = registerGlobalGetterLookup(*func->id); - generateRuntimeCall(_as, result, callGlobalLookup, - JITTargetPlatform::EngineRegister, - TrustedImm32(index), - baseAddressForCallData()); - } else { - generateRuntimeCall(_as, result, callActivationProperty, - JITTargetPlatform::EngineRegister, - StringToIndex(*func->id), - baseAddressForCallData()); - } -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinTypeofQmlContextProperty(IR::Expr *base, - IR::Member::MemberKind kind, - int propertyIndex, IR::Expr *result) -{ - if (kind == IR::Member::MemberOfQmlScopeObject) { - generateRuntimeCall(_as, result, typeofScopeObjectProperty, JITTargetPlatform::EngineRegister, - PointerToValue(base), - TrustedImm32(propertyIndex)); - } else if (kind == IR::Member::MemberOfQmlContextObject) { - generateRuntimeCall(_as, result, typeofContextObjectProperty, - JITTargetPlatform::EngineRegister, PointerToValue(base), - TrustedImm32(propertyIndex)); - } else { - Q_UNREACHABLE(); - } -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinTypeofMember(IR::Expr *base, const QString &name, - IR::Expr *result) -{ - generateRuntimeCall(_as, result, typeofMember, JITTargetPlatform::EngineRegister, - PointerToValue(base), StringToIndex(name)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinTypeofSubscript(IR::Expr *base, IR::Expr *index, - IR::Expr *result) -{ - generateRuntimeCall(_as, result, typeofElement, - JITTargetPlatform::EngineRegister, - PointerToValue(base), PointerToValue(index)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinTypeofName(const QString &name, IR::Expr *result) -{ - generateRuntimeCall(_as, result, typeofName, JITTargetPlatform::EngineRegister, - StringToIndex(name)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinTypeofValue(IR::Expr *value, IR::Expr *result) -{ - generateRuntimeCall(_as, result, typeofValue, JITTargetPlatform::EngineRegister, - PointerToValue(value)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinDeleteMember(IR::Expr *base, const QString &name, IR::Expr *result) -{ - generateRuntimeCall(_as, result, deleteMember, JITTargetPlatform::EngineRegister, - Reference(base), StringToIndex(name)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinDeleteSubscript(IR::Expr *base, IR::Expr *index, - IR::Expr *result) -{ - generateRuntimeCall(_as, result, deleteElement, JITTargetPlatform::EngineRegister, - Reference(base), PointerToValue(index)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinDeleteName(const QString &name, IR::Expr *result) -{ - generateRuntimeCall(_as, result, deleteName, JITTargetPlatform::EngineRegister, - StringToIndex(name)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinDeleteValue(IR::Expr *result) -{ - _as->storeValue(JITAssembler::TargetPrimitive::fromBoolean(false), result); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinThrow(IR::Expr *arg) -{ - generateRuntimeCall(_as, JITTargetPlatform::ReturnValueRegister, throwException, JITTargetPlatform::EngineRegister, - PointerToValue(arg)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinReThrow() -{ - _as->jumpToExceptionHandler(); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinUnwindException(IR::Expr *result) -{ - generateRuntimeCall(_as, result, unwindException, JITTargetPlatform::EngineRegister); - -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinPushCatchScope(const QString &exceptionName) -{ - generateRuntimeCall(_as, JITAssembler::Void, pushCatchScope, JITTargetPlatform::EngineRegister, StringToIndex(exceptionName)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinForeachIteratorObject(IR::Expr *arg, IR::Expr *result) -{ - Q_ASSERT(arg); - Q_ASSERT(result); - - generateRuntimeCall(_as, result, foreachIterator, JITTargetPlatform::EngineRegister, PointerToValue(arg)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinForeachNextPropertyname(IR::Expr *arg, IR::Expr *result) -{ - Q_ASSERT(arg); - Q_ASSERT(result); - - generateRuntimeCall(_as, result, foreachNextPropertyName, Reference(arg)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinPushWithScope(IR::Expr *arg) -{ - Q_ASSERT(arg); - - generateRuntimeCall(_as, JITAssembler::Void, pushWithScope, Reference(arg), JITTargetPlatform::EngineRegister); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinPopScope() -{ - generateRuntimeCall(_as, JITAssembler::Void, popScope, JITTargetPlatform::EngineRegister); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinDeclareVar(bool deletable, const QString &name) -{ - generateRuntimeCall(_as, JITAssembler::Void, declareVar, JITTargetPlatform::EngineRegister, - TrustedImm32(deletable), StringToIndex(name)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinDefineArray(IR::Expr *result, IR::ExprList *args) -{ - Q_ASSERT(result); - - int length = prepareVariableArguments(args); - generateRuntimeCall(_as, result, arrayLiteral, JITTargetPlatform::EngineRegister, - baseAddressForCallArguments(), TrustedImm32(length)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinDefineObjectLiteral(IR::Expr *result, int keyValuePairCount, IR::ExprList *keyValuePairs, IR::ExprList *arrayEntries, bool needSparseArray) -{ - Q_ASSERT(result); - - int argc = 0; - - const int classId = registerJSClass(keyValuePairCount, keyValuePairs); - - IR::ExprList *it = keyValuePairs; - for (int i = 0; i < keyValuePairCount; ++i, it = it->next) { - it = it->next; - - bool isData = it->expr->asConst()->value; - it = it->next; - - _as->copyValue(_as->stackLayout().argumentAddressForCall(argc++), it->expr, WriteBarrier::NoBarrier); - - if (!isData) { - it = it->next; - _as->copyValue(_as->stackLayout().argumentAddressForCall(argc++), it->expr, WriteBarrier::NoBarrier); - } - } - - it = arrayEntries; - uint arrayValueCount = 0; - while (it) { - uint index = it->expr->asConst()->value; - it = it->next; - - bool isData = it->expr->asConst()->value; - it = it->next; - - if (!isData) { - it = it->next; // getter - it = it->next; // setter - continue; - } - - ++arrayValueCount; - - // Index - _as->storeValue(JITAssembler::TargetPrimitive::fromUInt32(index), _as->stackLayout().argumentAddressForCall(argc++), WriteBarrier::NoBarrier); - - // Value - _as->copyValue(_as->stackLayout().argumentAddressForCall(argc++), it->expr, WriteBarrier::NoBarrier); - it = it->next; - } - - it = arrayEntries; - uint arrayGetterSetterCount = 0; - while (it) { - uint index = it->expr->asConst()->value; - it = it->next; - - bool isData = it->expr->asConst()->value; - it = it->next; - - if (isData) { - it = it->next; // value - continue; - } - - ++arrayGetterSetterCount; - - // Index - _as->storeValue(JITAssembler::TargetPrimitive::fromUInt32(index), _as->stackLayout().argumentAddressForCall(argc++), WriteBarrier::NoBarrier); - - // Getter - _as->copyValue(_as->stackLayout().argumentAddressForCall(argc++), it->expr, WriteBarrier::NoBarrier); - it = it->next; - - // Setter - _as->copyValue(_as->stackLayout().argumentAddressForCall(argc++), it->expr, WriteBarrier::NoBarrier); - it = it->next; - } - - generateRuntimeCall(_as, result, objectLiteral, JITTargetPlatform::EngineRegister, - baseAddressForCallArguments(), TrustedImm32(classId), - TrustedImm32(arrayValueCount), TrustedImm32(arrayGetterSetterCount | (needSparseArray << 30))); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinSetupArgumentObject(IR::Expr *result) -{ - generateRuntimeCall(_as, result, setupArgumentsObject, JITTargetPlatform::EngineRegister); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callBuiltinConvertThisToObject() -{ - generateRuntimeCall(_as, JITAssembler::Void, convertThisToObject, JITTargetPlatform::EngineRegister); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callValue(IR::Expr *value, IR::ExprList *args, IR::Expr *result) -{ - Q_ASSERT(value); - - prepareCallData(args, 0); - if (value->asConst()) - generateRuntimeCall(_as, result, callValue, JITTargetPlatform::EngineRegister, - PointerToValue(value), - baseAddressForCallData()); - else - generateRuntimeCall(_as, result, callValue, JITTargetPlatform::EngineRegister, - Reference(value), - baseAddressForCallData()); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::loadThisObject(IR::Expr *temp) -{ - WriteBarrier::Type barrier; - Pointer addr = _as->loadAddressForWriting(JITTargetPlatform::ScratchRegister, temp, &barrier); - _as->loadPtr(Address(JITTargetPlatform::EngineRegister, JITAssembler::targetStructureOffset(offsetof(QV4::EngineBase, current))), JITTargetPlatform::ReturnValueRegister); - _as->loadPtr(Address(JITTargetPlatform::ReturnValueRegister,JITAssembler::targetStructureOffset(Heap::ExecutionContextData::baseOffset + offsetof(Heap::ExecutionContextData, callData))), JITTargetPlatform::ReturnValueRegister); - _as->copyValue(addr, Address(JITTargetPlatform::ReturnValueRegister, offsetof(CallData, thisObject)), barrier); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::loadQmlContext(IR::Expr *temp) -{ - generateRuntimeCall(_as, temp, getQmlContext, JITTargetPlatform::EngineRegister); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::loadQmlImportedScripts(IR::Expr *temp) -{ - generateRuntimeCall(_as, temp, getQmlImportedScripts, JITTargetPlatform::EngineRegister); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::loadQmlSingleton(const QString &name, IR::Expr *temp) -{ - generateRuntimeCall(_as, temp, getQmlSingleton, JITTargetPlatform::EngineRegister, StringToIndex(name)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::loadConst(IR::Const *sourceConst, IR::Expr *target) -{ - if (IR::Temp *targetTemp = target->asTemp()) { - if (targetTemp->kind == IR::Temp::PhysicalRegister) { - if (targetTemp->type == IR::DoubleType) { - Q_ASSERT(sourceConst->type == IR::DoubleType); - _as->toDoubleRegister(sourceConst, (FPRegisterID) targetTemp->index); - } else if (targetTemp->type == IR::SInt32Type) { - Q_ASSERT(sourceConst->type == IR::SInt32Type); - _as->toInt32Register(sourceConst, (RegisterID) targetTemp->index); - } else if (targetTemp->type == IR::UInt32Type) { - Q_ASSERT(sourceConst->type == IR::UInt32Type); - _as->toUInt32Register(sourceConst, (RegisterID) targetTemp->index); - } else if (targetTemp->type == IR::BoolType) { - Q_ASSERT(sourceConst->type == IR::BoolType); - _as->move(TrustedImm32(convertToValue<Primitive>(sourceConst).int_32()), - (RegisterID) targetTemp->index); - } else { - Q_UNREACHABLE(); - } - return; - } - } - - _as->storeValue(convertToValue<typename JITAssembler::TargetPrimitive>(sourceConst), target); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::loadString(const QString &str, IR::Expr *target) -{ - Pointer srcAddr = _as->loadStringAddress(JITTargetPlatform::ReturnValueRegister, str); - _as->loadPtr(srcAddr, JITTargetPlatform::ReturnValueRegister); - WriteBarrier::Type barrier; - Pointer destAddr = _as->loadAddressForWriting(JITTargetPlatform::ScratchRegister, target, &barrier); - JITAssembler::RegisterSizeDependentOps::loadManagedPointer(_as, JITTargetPlatform::ReturnValueRegister, destAddr, barrier); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::loadRegexp(IR::RegExp *sourceRegexp, IR::Expr *target) -{ - int id = registerRegExp(sourceRegexp); - generateRuntimeCall(_as, target, regexpLiteral, JITTargetPlatform::EngineRegister, TrustedImm32(id)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::getActivationProperty(const IR::Name *name, IR::Expr *target) -{ - if (useFastLookups && name->global) { - uint index = registerGlobalGetterLookup(*name->id); - generateLookupCall(target, index, offsetof(QV4::Lookup, globalGetter), JITTargetPlatform::EngineRegister, JITAssembler::Void); - return; - } - generateRuntimeCall(_as, target, getActivationProperty, JITTargetPlatform::EngineRegister, StringToIndex(*name->id)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::setActivationProperty(IR::Expr *source, const QString &targetName) -{ - // ### should use a lookup call here - generateRuntimeCall(_as, JITAssembler::Void, setActivationProperty, - JITTargetPlatform::EngineRegister, StringToIndex(targetName), PointerToValue(source)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::initClosure(IR::Closure *closure, IR::Expr *target) -{ - int id = closure->value; - generateRuntimeCall(_as, target, closure, JITTargetPlatform::EngineRegister, TrustedImm32(id)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::getProperty(IR::Expr *base, const QString &name, IR::Expr *target) -{ - if (useFastLookups) { - uint index = registerGetterLookup(name); - generateLookupCall(target, index, offsetof(QV4::Lookup, getter), JITTargetPlatform::EngineRegister, PointerToValue(base), JITAssembler::Void); - } else { - generateRuntimeCall(_as, target, getProperty, JITTargetPlatform::EngineRegister, - PointerToValue(base), StringToIndex(name)); - } -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::getQmlContextProperty(IR::Expr *base, IR::Member::MemberKind kind, int index, bool captureRequired, IR::Expr *target) -{ - if (kind == IR::Member::MemberOfQmlScopeObject) - generateRuntimeCall(_as, target, getQmlScopeObjectProperty, JITTargetPlatform::EngineRegister, PointerToValue(base), TrustedImm32(index), TrustedImm32(captureRequired)); - else if (kind == IR::Member::MemberOfQmlContextObject) - generateRuntimeCall(_as, target, getQmlContextObjectProperty, JITTargetPlatform::EngineRegister, PointerToValue(base), TrustedImm32(index), TrustedImm32(captureRequired)); - else if (kind == IR::Member::MemberOfIdObjectsArray) - generateRuntimeCall(_as, target, getQmlIdObject, JITTargetPlatform::EngineRegister, PointerToValue(base), TrustedImm32(index)); - else - Q_ASSERT(false); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::getQObjectProperty(IR::Expr *base, int propertyIndex, bool captureRequired, bool isSingleton, int attachedPropertiesId, IR::Expr *target) -{ - if (attachedPropertiesId != 0) - generateRuntimeCall(_as, target, getQmlAttachedProperty, JITTargetPlatform::EngineRegister, TrustedImm32(attachedPropertiesId), TrustedImm32(propertyIndex)); - else if (isSingleton) - generateRuntimeCall(_as, target, getQmlSingletonQObjectProperty, JITTargetPlatform::EngineRegister, PointerToValue(base), TrustedImm32(propertyIndex), - TrustedImm32(captureRequired)); - else - generateRuntimeCall(_as, target, getQmlQObjectProperty, JITTargetPlatform::EngineRegister, PointerToValue(base), TrustedImm32(propertyIndex), - TrustedImm32(captureRequired)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::setProperty(IR::Expr *source, IR::Expr *targetBase, - const QString &targetName) -{ - if (useFastLookups) { - uint index = registerSetterLookup(targetName); - generateLookupCall(JITAssembler::Void, index, offsetof(QV4::Lookup, setter), - JITTargetPlatform::EngineRegister, - PointerToValue(targetBase), - PointerToValue(source)); - } else { - generateRuntimeCall(_as, JITAssembler::Void, setProperty, JITTargetPlatform::EngineRegister, - PointerToValue(targetBase), StringToIndex(targetName), - PointerToValue(source)); - } -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::setQmlContextProperty(IR::Expr *source, IR::Expr *targetBase, IR::Member::MemberKind kind, int propertyIndex) -{ - if (kind == IR::Member::MemberOfQmlScopeObject) - generateRuntimeCall(_as, JITAssembler::Void, setQmlScopeObjectProperty, JITTargetPlatform::EngineRegister, PointerToValue(targetBase), - TrustedImm32(propertyIndex), PointerToValue(source)); - else if (kind == IR::Member::MemberOfQmlContextObject) - generateRuntimeCall(_as, JITAssembler::Void, setQmlContextObjectProperty, JITTargetPlatform::EngineRegister, PointerToValue(targetBase), - TrustedImm32(propertyIndex), PointerToValue(source)); - else - Q_ASSERT(false); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::setQObjectProperty(IR::Expr *source, IR::Expr *targetBase, int propertyIndex) -{ - generateRuntimeCall(_as, JITAssembler::Void, setQmlQObjectProperty, JITTargetPlatform::EngineRegister, PointerToValue(targetBase), - TrustedImm32(propertyIndex), PointerToValue(source)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::getElement(IR::Expr *base, IR::Expr *index, IR::Expr *target) -{ - if (0 && useFastLookups) { - uint lookup = registerIndexedGetterLookup(); - generateLookupCall(target, lookup, offsetof(QV4::Lookup, indexedGetter), - JITTargetPlatform::EngineRegister, - PointerToValue(base), - PointerToValue(index)); - return; - } - - generateRuntimeCall(_as, target, getElement, JITTargetPlatform::EngineRegister, - PointerToValue(base), PointerToValue(index)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::setElement(IR::Expr *source, IR::Expr *targetBase, IR::Expr *targetIndex) -{ - if (0 && useFastLookups) { - uint lookup = registerIndexedSetterLookup(); - generateLookupCall(JITAssembler::Void, lookup, offsetof(QV4::Lookup, indexedSetter), - JITTargetPlatform::EngineRegister, - PointerToValue(targetBase), PointerToValue(targetIndex), - PointerToValue(source)); - return; - } - generateRuntimeCall(_as, JITAssembler::Void, setElement, JITTargetPlatform::EngineRegister, - PointerToValue(targetBase), PointerToValue(targetIndex), - PointerToValue(source)); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::copyValue(IR::Expr *source, IR::Expr *target) -{ - IR::Temp *sourceTemp = source->asTemp(); - IR::Temp *targetTemp = target->asTemp(); - - if (sourceTemp && targetTemp && *sourceTemp == *targetTemp) - return; - if (IR::ArgLocal *sal = source->asArgLocal()) - if (IR::ArgLocal *tal = target->asArgLocal()) - if (*sal == *tal) - return; - - if (sourceTemp && sourceTemp->kind == IR::Temp::PhysicalRegister) { - if (targetTemp && targetTemp->kind == IR::Temp::PhysicalRegister) { - if (sourceTemp->type == IR::DoubleType) - _as->moveDouble((FPRegisterID) sourceTemp->index, - (FPRegisterID) targetTemp->index); - else - _as->move((RegisterID) sourceTemp->index, - (RegisterID) targetTemp->index); - return; - } else { - switch (sourceTemp->type) { - case IR::DoubleType: - _as->storeDouble((FPRegisterID) sourceTemp->index, target); - break; - case IR::SInt32Type: - _as->storeInt32((RegisterID) sourceTemp->index, target); - break; - case IR::UInt32Type: - _as->storeUInt32((RegisterID) sourceTemp->index, target); - break; - case IR::BoolType: - _as->storeBool((RegisterID) sourceTemp->index, target); - break; - default: - Q_ASSERT(!"Unreachable"); - break; - } - return; - } - } else if (targetTemp && targetTemp->kind == IR::Temp::PhysicalRegister) { - switch (targetTemp->type) { - case IR::DoubleType: - Q_ASSERT(source->type == IR::DoubleType); - _as->toDoubleRegister(source, (FPRegisterID) targetTemp->index); - return; - case IR::BoolType: - Q_ASSERT(source->type == IR::BoolType); - _as->toInt32Register(source, (RegisterID) targetTemp->index); - return; - case IR::SInt32Type: - Q_ASSERT(source->type == IR::SInt32Type); - _as->toInt32Register(source, (RegisterID) targetTemp->index); - return; - case IR::UInt32Type: - Q_ASSERT(source->type == IR::UInt32Type); - _as->toUInt32Register(source, (RegisterID) targetTemp->index); - return; - default: - Q_ASSERT(!"Unreachable"); - break; - } - } - - WriteBarrier::Type barrier; - Pointer addr = _as->loadAddressForWriting(JITTargetPlatform::ReturnValueRegister, target, &barrier); - // The target is not a physical register, nor is the source. So we can do a memory-to-memory copy: - _as->memcopyValue(addr, source, JITTargetPlatform::ScratchRegister, barrier); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::swapValues(IR::Expr *source, IR::Expr *target) -{ - IR::Temp *sourceTemp = source->asTemp(); - IR::Temp *targetTemp = target->asTemp(); - - if (sourceTemp && sourceTemp->kind == IR::Temp::PhysicalRegister) { - if (targetTemp && targetTemp->kind == IR::Temp::PhysicalRegister) { - Q_ASSERT(sourceTemp->type == targetTemp->type); - - if (sourceTemp->type == IR::DoubleType) { - _as->moveDouble((FPRegisterID) targetTemp->index, JITTargetPlatform::FPGpr0); - _as->moveDouble((FPRegisterID) sourceTemp->index, - (FPRegisterID) targetTemp->index); - _as->moveDouble(JITTargetPlatform::FPGpr0, (FPRegisterID) sourceTemp->index); - } else { - _as->swap((RegisterID) sourceTemp->index, - (RegisterID) targetTemp->index); - } - return; - } - } else if (!sourceTemp || sourceTemp->kind == IR::Temp::StackSlot) { - if (!targetTemp || targetTemp->kind == IR::Temp::StackSlot) { - // Note: a swap for two stack-slots can involve different types. - WriteBarrier::Type barrierForSource, barrierForTarget; - Pointer sAddr = _as->loadAddressForWriting(JITTargetPlatform::ScratchRegister, source, &barrierForSource); - Pointer tAddr = _as->loadAddressForWriting(JITTargetPlatform::ReturnValueRegister, target, &barrierForTarget); - _as->loadRawValue(sAddr, JITTargetPlatform::FPGpr0); - _as->loadRawValue(tAddr, JITTargetPlatform::FPGpr1); - _as->storeRawValue(JITTargetPlatform::FPGpr1, sAddr, barrierForSource); - _as->storeRawValue(JITTargetPlatform::FPGpr0, tAddr, barrierForTarget); - return; - } - } - - IR::Expr *memExpr = !sourceTemp || sourceTemp->kind == IR::Temp::StackSlot ? source : target; - IR::Temp *regTemp = sourceTemp && sourceTemp->kind == IR::Temp::PhysicalRegister ? sourceTemp - : targetTemp; - Q_ASSERT(memExpr); - Q_ASSERT(regTemp); - - WriteBarrier::Type barrier; - Pointer addr = _as->loadAddressForWriting(JITTargetPlatform::ReturnValueRegister, memExpr, &barrier); - if (regTemp->type == IR::DoubleType) { - _as->loadDouble(addr, JITTargetPlatform::FPGpr0); - _as->storeDouble((FPRegisterID) regTemp->index, addr, barrier); - _as->moveDouble(JITTargetPlatform::FPGpr0, (FPRegisterID) regTemp->index); - } else if (regTemp->type == IR::UInt32Type) { - _as->toUInt32Register(addr, JITTargetPlatform::ScratchRegister); - _as->storeUInt32((RegisterID) regTemp->index, addr, barrier); - _as->move(JITTargetPlatform::ScratchRegister, (RegisterID) regTemp->index); - } else { - _as->load32(addr, JITTargetPlatform::ScratchRegister); - _as->store32((RegisterID) regTemp->index, addr); - if (regTemp->type != memExpr->type) { - addr.offset += 4; - quint32 tag; - switch (regTemp->type) { - case IR::BoolType: - tag = quint32(JITAssembler::ValueTypeInternal::Boolean); - break; - case IR::SInt32Type: - tag = quint32(JITAssembler::ValueTypeInternal::Integer); - break; - default: - tag = 31337; // bogus value - Q_UNREACHABLE(); - } - _as->store32(TrustedImm32(tag), addr); - _as->emitWriteBarrier(addr, barrier); - } - _as->move(JITTargetPlatform::ScratchRegister, (RegisterID) regTemp->index); - } -} - -#define setOp(op, opName, operation) \ - do { \ - op = typename JITAssembler::RuntimeCall(QV4::Runtime::operation); opName = "Runtime::" isel_stringIfy(operation); \ - needsExceptionCheck = QV4::Runtime::Method_##operation##_NeedsExceptionCheck; \ - } while (0) -#define setOpContext(op, opName, operation) \ - do { \ - opContext = typename JITAssembler::RuntimeCall(QV4::Runtime::operation); opName = "Runtime::" isel_stringIfy(operation); \ - needsExceptionCheck = QV4::Runtime::Method_##operation##_NeedsExceptionCheck; \ - } while (0) - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::unop(IR::AluOp oper, IR::Expr *source, IR::Expr *target) -{ - QV4::JIT::Unop<JITAssembler> unop(_as, oper); - unop.generate(source, target); -} - - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::binop(IR::AluOp oper, IR::Expr *leftSource, IR::Expr *rightSource, IR::Expr *target) -{ - QV4::JIT::Binop<JITAssembler> binop(_as, oper); - binop.generate(leftSource, rightSource, target); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callQmlContextProperty(IR::Expr *base, IR::Member::MemberKind kind, int propertyIndex, IR::ExprList *args, IR::Expr *result) -{ - prepareCallData(args, base); - - if (kind == IR::Member::MemberOfQmlScopeObject) - generateRuntimeCall(_as, result, callQmlScopeObjectProperty, - JITTargetPlatform::EngineRegister, - TrustedImm32(propertyIndex), - baseAddressForCallData()); - else if (kind == IR::Member::MemberOfQmlContextObject) - generateRuntimeCall(_as, result, callQmlContextObjectProperty, - JITTargetPlatform::EngineRegister, - TrustedImm32(propertyIndex), - baseAddressForCallData()); - else - Q_ASSERT(false); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callProperty(IR::Expr *base, const QString &name, IR::ExprList *args, - IR::Expr *result) -{ - Q_ASSERT(base != 0); - - prepareCallData(args, base); - - if (useFastLookups) { - uint index = registerGetterLookup(name); - generateRuntimeCall(_as, result, callPropertyLookup, - JITTargetPlatform::EngineRegister, - TrustedImm32(index), - baseAddressForCallData()); - } else { - generateRuntimeCall(_as, result, callProperty, JITTargetPlatform::EngineRegister, - StringToIndex(name), - baseAddressForCallData()); - } -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::callSubscript(IR::Expr *base, IR::Expr *index, IR::ExprList *args, - IR::Expr *result) -{ - Q_ASSERT(base != 0); - - prepareCallData(args, base); - generateRuntimeCall(_as, result, callElement, JITTargetPlatform::EngineRegister, - PointerToValue(index), - baseAddressForCallData()); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::convertType(IR::Expr *source, IR::Expr *target) -{ - switch (target->type) { - case IR::DoubleType: - convertTypeToDouble(source, target); - break; - case IR::BoolType: - convertTypeToBool(source, target); - break; - case IR::SInt32Type: - convertTypeToSInt32(source, target); - break; - case IR::UInt32Type: - convertTypeToUInt32(source, target); - break; - default: - convertTypeSlowPath(source, target); - break; - } -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::convertTypeSlowPath(IR::Expr *source, IR::Expr *target) -{ - Q_ASSERT(target->type != IR::BoolType); - - if (target->type & IR::NumberType) - unop(IR::OpUPlus, source, target); - else - copyValue(source, target); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::convertTypeToDouble(IR::Expr *source, IR::Expr *target) -{ - switch (source->type) { - case IR::SInt32Type: - case IR::BoolType: - case IR::NullType: - convertIntToDouble(source, target); - break; - case IR::UInt32Type: - convertUIntToDouble(source, target); - break; - case IR::UndefinedType: - _as->loadDouble(_as->loadAddressForReading(JITTargetPlatform::ScratchRegister, source), JITTargetPlatform::FPGpr0); - _as->storeDouble(JITTargetPlatform::FPGpr0, target); - break; - case IR::StringType: - case IR::VarType: { - // load the tag: - Pointer tagAddr = _as->loadAddressForReading(JITTargetPlatform::ScratchRegister, source); - tagAddr.offset += 4; - _as->load32(tagAddr, JITTargetPlatform::ScratchRegister); - - // check if it's an int32: - Jump isNoInt = _as->branch32(RelationalCondition::NotEqual, JITTargetPlatform::ScratchRegister, - TrustedImm32(quint32(JITAssembler::ValueTypeInternal::Integer))); - convertIntToDouble(source, target); - Jump intDone = _as->jump(); - - // not an int, check if it's NOT a double: - isNoInt.link(_as); - Jump isDbl = _as->generateIsDoubleCheck(JITTargetPlatform::ScratchRegister); - - generateRuntimeCall(_as, target, toDouble, PointerToValue(source)); - Jump noDoubleDone = _as->jump(); - - // it is a double: - isDbl.link(_as); - Pointer addr2 = _as->loadAddressForReading(JITTargetPlatform::ScratchRegister, source); - IR::Temp *targetTemp = target->asTemp(); - if (!targetTemp || targetTemp->kind == IR::Temp::StackSlot) { - _as->memcopyValue(target, addr2, JITTargetPlatform::FPGpr0, JITTargetPlatform::ReturnValueRegister); - } else { - _as->loadDouble(addr2, (FPRegisterID) targetTemp->index); - } - - noDoubleDone.link(_as); - intDone.link(_as); - } break; - default: - convertTypeSlowPath(source, target); - break; - } -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::convertTypeToBool(IR::Expr *source, IR::Expr *target) -{ - IR::Temp *sourceTemp = source->asTemp(); - switch (source->type) { - case IR::SInt32Type: - case IR::UInt32Type: - convertIntToBool(source, target); - break; - case IR::DoubleType: { - // The source is in a register if the register allocator is used. If the register - // allocator was not used, then that means that we can use any register for to - // load the double into. - FPRegisterID reg; - if (sourceTemp && sourceTemp->kind == IR::Temp::PhysicalRegister) - reg = (FPRegisterID) sourceTemp->index; - else - reg = _as->toDoubleRegister(source, (FPRegisterID) 1); - Jump nonZero = _as->branchDoubleNonZero(reg, JITTargetPlatform::FPGpr0); - - // it's 0, so false: - _as->storeBool(false, target); - Jump done = _as->jump(); - - // it's non-zero, so true: - nonZero.link(_as); - _as->storeBool(true, target); - - // done: - done.link(_as); - } break; - case IR::UndefinedType: - case IR::NullType: - _as->storeBool(false, target); - break; - case IR::StringType: - generateRuntimeCall(_as, JITTargetPlatform::ReturnValueRegister, toBoolean, - PointerToValue(source)); - _as->storeBool(JITTargetPlatform::ReturnValueRegister, target); - Q_FALLTHROUGH(); - case IR::VarType: - default: - Pointer addr = _as->loadAddressForReading(JITTargetPlatform::ScratchRegister, source); - Pointer tagAddr = addr; - tagAddr.offset += 4; - _as->load32(tagAddr, JITTargetPlatform::ReturnValueRegister); - - // checkif it's a bool: - Jump notBool = _as->branch32(RelationalCondition::NotEqual, JITTargetPlatform::ReturnValueRegister, - TrustedImm32(quint32(JITAssembler::ValueTypeInternal::Boolean))); - _as->load32(addr, JITTargetPlatform::ReturnValueRegister); - Jump boolDone = _as->jump(); - // check if it's an int32: - notBool.link(_as); - Jump fallback = _as->branch32(RelationalCondition::NotEqual, JITTargetPlatform::ReturnValueRegister, - TrustedImm32(quint32(JITAssembler::ValueTypeInternal::Integer))); - _as->load32(addr, JITTargetPlatform::ReturnValueRegister); - Jump isZero = _as->branch32(RelationalCondition::Equal, JITTargetPlatform::ReturnValueRegister, - TrustedImm32(0)); - _as->move(TrustedImm32(1), JITTargetPlatform::ReturnValueRegister); - Jump intDone = _as->jump(); - - // not an int: - fallback.link(_as); - generateRuntimeCall(_as, JITTargetPlatform::ReturnValueRegister, toBoolean, - PointerToValue(source)); - - isZero.link(_as); - intDone.link(_as); - boolDone.link(_as); - _as->storeBool(JITTargetPlatform::ReturnValueRegister, target); - - break; - } -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::convertTypeToSInt32(IR::Expr *source, IR::Expr *target) -{ - switch (source->type) { - case IR::VarType: { - JITAssembler::RegisterSizeDependentOps::convertVarToSInt32(_as, source, target); - } break; - case IR::DoubleType: { - Jump success = - _as->branchTruncateDoubleToInt32(_as->toDoubleRegister(source), - JITTargetPlatform::ReturnValueRegister, - BranchTruncateType::BranchIfTruncateSuccessful); - generateRuntimeCall(_as, JITTargetPlatform::ReturnValueRegister, doubleToInt, - PointerToValue(source)); - success.link(_as); - _as->storeInt32(JITTargetPlatform::ReturnValueRegister, target); - } break; - case IR::UInt32Type: - _as->storeInt32(_as->toUInt32Register(source, JITTargetPlatform::ReturnValueRegister), target); - break; - case IR::NullType: - case IR::UndefinedType: - _as->move(TrustedImm32(0), JITTargetPlatform::ReturnValueRegister); - _as->storeInt32(JITTargetPlatform::ReturnValueRegister, target); - break; - case IR::BoolType: - _as->storeInt32(_as->toInt32Register(source, JITTargetPlatform::ReturnValueRegister), target); - break; - case IR::StringType: - default: - generateRuntimeCall(_as, JITTargetPlatform::ReturnValueRegister, toInt, - _as->loadAddressForReading(JITTargetPlatform::ScratchRegister, source)); - _as->storeInt32(JITTargetPlatform::ReturnValueRegister, target); - break; - } // switch (source->type) -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::convertTypeToUInt32(IR::Expr *source, IR::Expr *target) -{ - switch (source->type) { - case IR::VarType: { - // load the tag: - Pointer tagAddr = _as->loadAddressForReading(JITTargetPlatform::ScratchRegister, source); - tagAddr.offset += 4; - _as->load32(tagAddr, JITTargetPlatform::ScratchRegister); - - // check if it's an int32: - Jump isNoInt = _as->branch32(RelationalCondition::NotEqual, JITTargetPlatform::ScratchRegister, - TrustedImm32(quint32(JITAssembler::ValueTypeInternal::Integer))); - Pointer addr = _as->loadAddressForReading(JITTargetPlatform::ScratchRegister, source); - _as->storeUInt32(_as->toInt32Register(addr, JITTargetPlatform::ScratchRegister), target); - Jump intDone = _as->jump(); - - // not an int: - isNoInt.link(_as); - generateRuntimeCall(_as, JITTargetPlatform::ReturnValueRegister, toUInt, - _as->loadAddressForReading(JITTargetPlatform::ScratchRegister, source)); - _as->storeInt32(JITTargetPlatform::ReturnValueRegister, target); - - intDone.link(_as); - } break; - case IR::DoubleType: { - FPRegisterID reg = _as->toDoubleRegister(source); - Jump success = - _as->branchTruncateDoubleToUint32(reg, JITTargetPlatform::ReturnValueRegister, - BranchTruncateType::BranchIfTruncateSuccessful); - generateRuntimeCall(_as, JITTargetPlatform::ReturnValueRegister, doubleToUInt, - PointerToValue(source)); - success.link(_as); - _as->storeUInt32(JITTargetPlatform::ReturnValueRegister, target); - } break; - case IR::NullType: - case IR::UndefinedType: - _as->move(TrustedImm32(0), JITTargetPlatform::ReturnValueRegister); - _as->storeUInt32(JITTargetPlatform::ReturnValueRegister, target); - break; - case IR::StringType: - generateRuntimeCall(_as, JITTargetPlatform::ReturnValueRegister, toUInt, - PointerToValue(source)); - _as->storeUInt32(JITTargetPlatform::ReturnValueRegister, target); - break; - case IR::SInt32Type: - case IR::BoolType: - _as->storeUInt32(_as->toInt32Register(source, JITTargetPlatform::ReturnValueRegister), target); - break; - default: - break; - } // switch (source->type) -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::constructActivationProperty(IR::Name *func, IR::ExprList *args, IR::Expr *result) -{ - Q_ASSERT(func != 0); - prepareCallData(args, 0); - - if (useFastLookups && func->global) { - uint index = registerGlobalGetterLookup(*func->id); - generateRuntimeCall(_as, result, constructGlobalLookup, - JITTargetPlatform::EngineRegister, - TrustedImm32(index), baseAddressForCallData()); - return; - } - - generateRuntimeCall(_as, result, constructActivationProperty, - JITTargetPlatform::EngineRegister, - StringToIndex(*func->id), - baseAddressForCallData()); -} - - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::constructProperty(IR::Expr *base, const QString &name, IR::ExprList *args, IR::Expr *result) -{ - prepareCallData(args, base); - if (useFastLookups) { - uint index = registerGetterLookup(name); - generateRuntimeCall(_as, result, constructPropertyLookup, - JITTargetPlatform::EngineRegister, - TrustedImm32(index), - baseAddressForCallData()); - return; - } - - generateRuntimeCall(_as, result, constructProperty, JITTargetPlatform::EngineRegister, - StringToIndex(name), - baseAddressForCallData()); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::constructValue(IR::Expr *value, IR::ExprList *args, IR::Expr *result) -{ - Q_ASSERT(value != 0); - - prepareCallData(args, 0); - generateRuntimeCall(_as, result, constructValue, - JITTargetPlatform::EngineRegister, - Reference(value), - baseAddressForCallData()); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::visitJump(IR::Jump *s) -{ - if (!_removableJumps.at(_block->index())) - _as->jumpToBlock(_block, s->target); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::visitCJump(IR::CJump *s) -{ - IR::Temp *t = s->cond->asTemp(); - if (t || s->cond->asArgLocal()) { - RegisterID reg; - if (t && t->kind == IR::Temp::PhysicalRegister) { - Q_ASSERT(t->type == IR::BoolType); - reg = (RegisterID) t->index; - } else if (t && t->kind == IR::Temp::StackSlot && t->type == IR::BoolType) { - reg = JITTargetPlatform::ReturnValueRegister; - _as->toInt32Register(t, reg); - } else { - Address temp = _as->loadAddressForReading(JITTargetPlatform::ScratchRegister, s->cond); - Address tag = temp; - tag.offset += QV4::Value::tagOffset(); - Jump booleanConversion = _as->branch32(RelationalCondition::NotEqual, tag, - TrustedImm32(quint32(JITAssembler::ValueTypeInternal::Boolean))); - - Address data = temp; - data.offset += QV4::Value::valueOffset(); - _as->load32(data, JITTargetPlatform::ReturnValueRegister); - Jump testBoolean = _as->jump(); - - booleanConversion.link(_as); - reg = JITTargetPlatform::ReturnValueRegister; - generateRuntimeCall(_as, reg, toBoolean, Reference(s->cond)); - - testBoolean.link(_as); - } - - _as->generateCJumpOnNonZero(reg, _block, s->iftrue, s->iffalse); - return; - } else if (IR::Const *c = s->cond->asConst()) { - // TODO: SSA optimization for constant condition evaluation should remove this. - // See also visitCJump() in RegAllocInfo. - generateRuntimeCall(_as, JITTargetPlatform::ReturnValueRegister, toBoolean, - PointerToValue(c)); - _as->generateCJumpOnNonZero(JITTargetPlatform::ReturnValueRegister, _block, s->iftrue, s->iffalse); - return; - } else if (IR::Binop *b = s->cond->asBinop()) { - if (b->left->type == IR::DoubleType && b->right->type == IR::DoubleType - && visitCJumpDouble(b->op, b->left, b->right, s->iftrue, s->iffalse)) - return; - - if (b->left->type == IR::SInt32Type && b->right->type == IR::SInt32Type - && visitCJumpSInt32(b->op, b->left, b->right, s->iftrue, s->iffalse)) - return; - - if (b->op == IR::OpStrictEqual || b->op == IR::OpStrictNotEqual) { - visitCJumpStrict(b, s->iftrue, s->iffalse); - return; - } - if (b->op == IR::OpEqual || b->op == IR::OpNotEqual) { - visitCJumpEqual(b, s->iftrue, s->iffalse); - return; - } - - typename JITAssembler::RuntimeCall op; - typename JITAssembler::RuntimeCall opContext; - const char *opName = 0; - bool needsExceptionCheck; - switch (b->op) { - default: Q_UNREACHABLE(); Q_ASSERT(!"todo"); break; - case IR::OpGt: setOp(op, opName, compareGreaterThan); break; - case IR::OpLt: setOp(op, opName, compareLessThan); break; - case IR::OpGe: setOp(op, opName, compareGreaterEqual); break; - case IR::OpLe: setOp(op, opName, compareLessEqual); break; - case IR::OpEqual: setOp(op, opName, compareEqual); break; - case IR::OpNotEqual: setOp(op, opName, compareNotEqual); break; - case IR::OpStrictEqual: setOp(op, opName, compareStrictEqual); break; - case IR::OpStrictNotEqual: setOp(op, opName, compareStrictNotEqual); break; - case IR::OpInstanceof: setOpContext(op, opName, compareInstanceof); break; - case IR::OpIn: setOpContext(op, opName, compareIn); break; - } // switch - - // TODO: in SSA optimization, do constant expression evaluation. - // The case here is, for example: - // if (true === true) ..... - // Of course, after folding the CJUMP to a JUMP, dead-code (dead-basic-block) - // elimination (which isn't there either) would remove the whole else block. - if (opContext.isValid()) - _as->generateFunctionCallImp(needsExceptionCheck, - JITTargetPlatform::ReturnValueRegister, opName, opContext, - JITTargetPlatform::EngineRegister, - PointerToValue(b->left), - PointerToValue(b->right)); - else - _as->generateFunctionCallImp(needsExceptionCheck, - JITTargetPlatform::ReturnValueRegister, opName, op, - PointerToValue(b->left), - PointerToValue(b->right)); - - _as->generateCJumpOnNonZero(JITTargetPlatform::ReturnValueRegister, _block, s->iftrue, s->iffalse); - return; - } - Q_UNREACHABLE(); -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::visitRet(IR::Ret *s) -{ - _as->returnFromFunction(s, regularRegistersToSave, fpRegistersToSave); -} - -template <typename JITAssembler> -int InstructionSelection<JITAssembler>::prepareVariableArguments(IR::ExprList* args) -{ - int argc = 0; - for (IR::ExprList *it = args; it; it = it->next) { - ++argc; - } - - int i = 0; - for (IR::ExprList *it = args; it; it = it->next, ++i) { - IR::Expr *arg = it->expr; - Q_ASSERT(arg != 0); - Pointer dst(_as->stackLayout().argumentAddressForCall(i)); - if (arg->asTemp() && arg->asTemp()->kind != IR::Temp::PhysicalRegister) - _as->memcopyValue(dst, arg->asTemp(), JITTargetPlatform::ScratchRegister, WriteBarrier::NoBarrier); - else - _as->copyValue(dst, arg, WriteBarrier::NoBarrier); - } - - return argc; -} - -template <typename JITAssembler> -int InstructionSelection<JITAssembler>::prepareCallData(IR::ExprList* args, IR::Expr *thisObject) -{ - int argc = 0; - for (IR::ExprList *it = args; it; it = it->next) { - ++argc; - } - - Pointer p = _as->stackLayout().callDataAddress(offsetof(CallData, tag)); - _as->store32(TrustedImm32(quint32(JITAssembler::ValueTypeInternal::Integer)), p); - p = _as->stackLayout().callDataAddress(offsetof(CallData, argc)); - _as->store32(TrustedImm32(argc), p); - p = _as->stackLayout().callDataAddress(offsetof(CallData, thisObject)); - if (!thisObject) - _as->storeValue(JITAssembler::TargetPrimitive::undefinedValue(), p, WriteBarrier::NoBarrier); - else - _as->copyValue(p, thisObject, WriteBarrier::NoBarrier); - - int i = 0; - for (IR::ExprList *it = args; it; it = it->next, ++i) { - IR::Expr *arg = it->expr; - Q_ASSERT(arg != 0); - Pointer dst(_as->stackLayout().argumentAddressForCall(i)); - if (arg->asTemp() && arg->asTemp()->kind != IR::Temp::PhysicalRegister) - _as->memcopyValue(dst, arg->asTemp(), JITTargetPlatform::ScratchRegister, WriteBarrier::NoBarrier); - else - _as->copyValue(dst, arg, WriteBarrier::NoBarrier); - } - return argc; -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::calculateRegistersToSave(const RegisterInformation &used) -{ - regularRegistersToSave.clear(); - fpRegistersToSave.clear(); - - for (const RegisterInfo &ri : JITTargetPlatform::getRegisterInfo()) { - if (JITTargetPlatform::gotRegister != -1 && ri.isRegularRegister() && ri.reg<RegisterID>() == JITTargetPlatform::gotRegister) { - regularRegistersToSave.append(ri); - continue; - } - if (ri.isCallerSaved()) - continue; - if (ri.isRegularRegister()) { - if (ri.isPredefined() || used.contains(ri)) - regularRegistersToSave.append(ri); - } else { - Q_ASSERT(ri.isFloatingPoint()); - if (ri.isPredefined() || used.contains(ri)) - fpRegistersToSave.append(ri); - } - } -} - -QT_BEGIN_NAMESPACE -namespace QV4 { -bool operator==(const Primitive &v1, const Primitive &v2) -{ - return v1.rawValue() == v2.rawValue(); -} -} // QV4 namespace -QT_END_NAMESPACE - -template <typename JITAssembler> -bool InstructionSelection<JITAssembler>::visitCJumpDouble(IR::AluOp op, IR::Expr *left, IR::Expr *right, - IR::BasicBlock *iftrue, IR::BasicBlock *iffalse) -{ - if (_as->nextBlock() == iftrue) { - Jump target = _as->branchDouble(true, op, left, right); - _as->addPatch(iffalse, target); - } else { - Jump target = _as->branchDouble(false, op, left, right); - _as->addPatch(iftrue, target); - _as->jumpToBlock(_block, iffalse); - } - return true; -} - -template <typename JITAssembler> -bool InstructionSelection<JITAssembler>::visitCJumpSInt32(IR::AluOp op, IR::Expr *left, IR::Expr *right, - IR::BasicBlock *iftrue, IR::BasicBlock *iffalse) -{ - if (_as->nextBlock() == iftrue) { - Jump target = _as->branchInt32(true, op, left, right); - _as->addPatch(iffalse, target); - } else { - Jump target = _as->branchInt32(false, op, left, right); - _as->addPatch(iftrue, target); - _as->jumpToBlock(_block, iffalse); - } - return true; -} - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::visitCJumpStrict(IR::Binop *binop, IR::BasicBlock *trueBlock, - IR::BasicBlock *falseBlock) -{ - Q_ASSERT(binop->op == IR::OpStrictEqual || binop->op == IR::OpStrictNotEqual); - - if (visitCJumpStrictNull(binop, trueBlock, falseBlock)) - return; - if (visitCJumpStrictUndefined(binop, trueBlock, falseBlock)) - return; - if (visitCJumpStrictBool(binop, trueBlock, falseBlock)) - return; - - IR::Expr *left = binop->left; - IR::Expr *right = binop->right; - - generateRuntimeCall(_as, JITTargetPlatform::ReturnValueRegister, compareStrictEqual, - PointerToValue(left), PointerToValue(right)); - _as->generateCJumpOnCompare(binop->op == IR::OpStrictEqual ? RelationalCondition::NotEqual : RelationalCondition::Equal, - JITTargetPlatform::ReturnValueRegister, TrustedImm32(0), - _block, trueBlock, falseBlock); -} - -// Only load the non-null temp. -template <typename JITAssembler> -bool InstructionSelection<JITAssembler>::visitCJumpStrictNull(IR::Binop *binop, - IR::BasicBlock *trueBlock, - IR::BasicBlock *falseBlock) -{ - IR::Expr *varSrc = 0; - if (binop->left->type == IR::VarType && binop->right->type == IR::NullType) - varSrc = binop->left; - else if (binop->left->type == IR::NullType && binop->right->type == IR::VarType) - varSrc = binop->right; - if (!varSrc) - return false; - - if (varSrc->asTemp() && varSrc->asTemp()->kind == IR::Temp::PhysicalRegister) { - _as->jumpToBlock(_block, falseBlock); - return true; - } - - if (IR::Const *c = varSrc->asConst()) { - if (c->type == IR::NullType) - _as->jumpToBlock(_block, trueBlock); - else - _as->jumpToBlock(_block, falseBlock); - return true; - } - - Pointer tagAddr = _as->loadAddressForReading(JITTargetPlatform::ScratchRegister, varSrc); - tagAddr.offset += 4; - const RegisterID tagReg = JITTargetPlatform::ScratchRegister; - _as->load32(tagAddr, tagReg); - - RelationalCondition cond = binop->op == IR::OpStrictEqual ? RelationalCondition::Equal - : RelationalCondition::NotEqual; - const TrustedImm32 tag{quint32(JITAssembler::ValueTypeInternal::Null)}; - _as->generateCJumpOnCompare(cond, tagReg, tag, _block, trueBlock, falseBlock); - return true; -} - -template <typename JITAssembler> -bool InstructionSelection<JITAssembler>::visitCJumpStrictUndefined(IR::Binop *binop, - IR::BasicBlock *trueBlock, - IR::BasicBlock *falseBlock) -{ - IR::Expr *varSrc = 0; - if (binop->left->type == IR::VarType && binop->right->type == IR::UndefinedType) - varSrc = binop->left; - else if (binop->left->type == IR::UndefinedType && binop->right->type == IR::VarType) - varSrc = binop->right; - if (!varSrc) - return false; - - if (varSrc->asTemp() && varSrc->asTemp()->kind == IR::Temp::PhysicalRegister) { - _as->jumpToBlock(_block, falseBlock); - return true; - } - - if (IR::Const *c = varSrc->asConst()) { - if (c->type == IR::UndefinedType) - _as->jumpToBlock(_block, trueBlock); - else - _as->jumpToBlock(_block, falseBlock); - return true; - } - - RelationalCondition cond = binop->op == IR::OpStrictEqual ? RelationalCondition::Equal - : RelationalCondition::NotEqual; - const RegisterID tagReg = JITTargetPlatform::ReturnValueRegister; - _as->generateCJumpOnUndefined(cond, varSrc, JITTargetPlatform::ScratchRegister, tagReg, _block, trueBlock, falseBlock); - return true; -} - -template <typename JITAssembler> -bool InstructionSelection<JITAssembler>::visitCJumpStrictBool(IR::Binop *binop, IR::BasicBlock *trueBlock, - IR::BasicBlock *falseBlock) -{ - IR::Expr *boolSrc = 0, *otherSrc = 0; - if (binop->left->type == IR::BoolType) { - boolSrc = binop->left; - otherSrc = binop->right; - } else if (binop->right->type == IR::BoolType) { - boolSrc = binop->right; - otherSrc = binop->left; - } else { - // neither operands are statically typed as bool, so bail out. - return false; - } - if (otherSrc->type == IR::UnknownType) { - // Ok, we really need to call into the runtime. - // (This case doesn't happen when the optimizer ran, because everything will be typed (yes, - // possibly as "var" meaning anything), but it does happen for $0===true, which is generated - // for things where the optimizer didn't run (like functions with a try block).) - return false; - } - - RelationalCondition cond = binop->op == IR::OpStrictEqual ? RelationalCondition::Equal - : RelationalCondition::NotEqual; - - if (otherSrc->type == IR::BoolType) { // both are boolean - RegisterID one = _as->toBoolRegister(boolSrc, JITTargetPlatform::ReturnValueRegister); - RegisterID two = _as->toBoolRegister(otherSrc, JITTargetPlatform::ScratchRegister); - _as->generateCJumpOnCompare(cond, one, two, _block, trueBlock, falseBlock); - return true; - } - - if (otherSrc->type != IR::VarType) { - _as->jumpToBlock(_block, falseBlock); - return true; - } - - Pointer otherAddr = _as->loadAddressForReading(JITTargetPlatform::ReturnValueRegister, otherSrc); - otherAddr.offset += 4; // tag address - - // check if the tag of the var operand is indicates 'boolean' - _as->load32(otherAddr, JITTargetPlatform::ScratchRegister); - Jump noBool = _as->branch32(RelationalCondition::NotEqual, JITTargetPlatform::ScratchRegister, - TrustedImm32(quint32(JITAssembler::ValueTypeInternal::Boolean))); - if (binop->op == IR::OpStrictEqual) - _as->addPatch(falseBlock, noBool); - else - _as->addPatch(trueBlock, noBool); - - // ok, both are boolean, so let's load them and compare them. - otherAddr.offset -= 4; // int_32 address - _as->load32(otherAddr, JITTargetPlatform::ReturnValueRegister); - RegisterID boolReg = _as->toBoolRegister(boolSrc, JITTargetPlatform::ScratchRegister); - _as->generateCJumpOnCompare(cond, boolReg, JITTargetPlatform::ReturnValueRegister, _block, trueBlock, - falseBlock); - return true; -} - -template <typename JITAssembler> -bool InstructionSelection<JITAssembler>::visitCJumpNullUndefined(IR::Type nullOrUndef, IR::Binop *binop, - IR::BasicBlock *trueBlock, - IR::BasicBlock *falseBlock) -{ - Q_ASSERT(nullOrUndef == IR::NullType || nullOrUndef == IR::UndefinedType); - - IR::Expr *varSrc = 0; - if (binop->left->type == IR::VarType && binop->right->type == nullOrUndef) - varSrc = binop->left; - else if (binop->left->type == nullOrUndef && binop->right->type == IR::VarType) - varSrc = binop->right; - if (!varSrc) - return false; - - if (varSrc->asTemp() && varSrc->asTemp()->kind == IR::Temp::PhysicalRegister) { - _as->jumpToBlock(_block, falseBlock); - return true; - } - - if (IR::Const *c = varSrc->asConst()) { - if (c->type == nullOrUndef) - _as->jumpToBlock(_block, trueBlock); - else - _as->jumpToBlock(_block, falseBlock); - return true; - } - - Pointer tagAddr = _as->loadAddressForReading(JITTargetPlatform::ScratchRegister, varSrc); - tagAddr.offset += 4; - const RegisterID tagReg = JITTargetPlatform::ReturnValueRegister; - _as->load32(tagAddr, tagReg); - - if (binop->op == IR::OpNotEqual) - qSwap(trueBlock, falseBlock); - Jump isNull = _as->branch32(RelationalCondition::Equal, tagReg, TrustedImm32(quint32(JITAssembler::ValueTypeInternal::Null))); - Jump isNotUndefinedTag = _as->branch32(RelationalCondition::NotEqual, tagReg, TrustedImm32(int(QV4::Value::Managed_Type_Internal))); - tagAddr.offset -= 4; - _as->load32(tagAddr, tagReg); - Jump isNotUndefinedValue = _as->branch32(RelationalCondition::NotEqual, tagReg, TrustedImm32(0)); - _as->addPatch(trueBlock, isNull); - _as->addPatch(falseBlock, isNotUndefinedTag); - _as->addPatch(falseBlock, isNotUndefinedValue); - _as->jumpToBlock(_block, trueBlock); - - return true; -} - - -template <typename JITAssembler> -void InstructionSelection<JITAssembler>::visitCJumpEqual(IR::Binop *binop, IR::BasicBlock *trueBlock, - IR::BasicBlock *falseBlock) -{ - Q_ASSERT(binop->op == IR::OpEqual || binop->op == IR::OpNotEqual); - - if (visitCJumpNullUndefined(IR::NullType, binop, trueBlock, falseBlock)) - return; - - IR::Expr *left = binop->left; - IR::Expr *right = binop->right; - - generateRuntimeCall(_as, JITTargetPlatform::ReturnValueRegister, compareEqual, - PointerToValue(left), PointerToValue(right)); - _as->generateCJumpOnCompare(binop->op == IR::OpEqual ? RelationalCondition::NotEqual : RelationalCondition::Equal, - JITTargetPlatform::ReturnValueRegister, TrustedImm32(0), - _block, trueBlock, falseBlock); -} - -template <typename JITAssembler> -QQmlRefPointer<CompiledData::CompilationUnit> ISelFactory<JITAssembler>::createUnitForLoading() -{ - QQmlRefPointer<CompiledData::CompilationUnit> result; - result.adopt(new JIT::CompilationUnit); - return result; -} - -#endif // ENABLE(ASSEMBLER) - -QT_BEGIN_NAMESPACE -namespace QV4 { namespace JIT { -#if ENABLE(ASSEMBLER) -template class Q_QML_EXPORT InstructionSelection<>; -template class Q_QML_EXPORT ISelFactory<>; -#endif - -#if defined(V4_BOOTSTRAP) - -Q_QML_EXPORT QV4::EvalISelFactory *createISelForArchitecture(const QString &architecture) -{ -#if ENABLE(ASSEMBLER) - using ARMv7CrossAssembler = QV4::JIT::Assembler<AssemblerTargetConfiguration<JSC::MacroAssemblerARMv7, NoOperatingSystemSpecialization>>; - using ARM64CrossAssembler = QV4::JIT::Assembler<AssemblerTargetConfiguration<JSC::MacroAssemblerARM64, NoOperatingSystemSpecialization>>; - - if (architecture == QLatin1String("arm")) - return new ISelFactory<ARMv7CrossAssembler>; - else if (architecture == QLatin1String("arm64")) - return new ISelFactory<ARM64CrossAssembler>; - - QString hostArch; -#if CPU(ARM_THUMB2) - hostArch = QStringLiteral("arm"); -#elif CPU(MIPS) - hostArch = QStringLiteral("mips"); -#elif CPU(X86) - hostArch = QStringLiteral("i386"); -#elif CPU(X86_64) - hostArch = QStringLiteral("x86_64"); -#endif - if (!hostArch.isEmpty() && architecture == hostArch) - return new ISelFactory<>; -#endif // ENABLE(ASSEMBLER) - - return nullptr; -} - -#endif -} } -QT_END_NAMESPACE - |