| // Copyright 2014 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/compiler/pipeline.h" |
| #include "src/compiler/raw-machine-assembler.h" |
| #include "src/compiler/scheduler.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace compiler { |
| |
| RawMachineAssembler::RawMachineAssembler( |
| Graph* graph, MachineCallDescriptorBuilder* call_descriptor_builder, |
| MachineType word) |
| : GraphBuilder(graph), |
| schedule_(new (zone()) Schedule(zone())), |
| machine_(zone(), word), |
| common_(zone()), |
| call_descriptor_builder_(call_descriptor_builder), |
| parameters_(NULL), |
| exit_label_(schedule()->exit()), |
| current_block_(schedule()->entry()) { |
| Node* s = graph->NewNode(common_.Start(parameter_count())); |
| graph->SetStart(s); |
| if (parameter_count() == 0) return; |
| parameters_ = zone()->NewArray<Node*>(parameter_count()); |
| for (int i = 0; i < parameter_count(); ++i) { |
| parameters_[i] = NewNode(common()->Parameter(i), graph->start()); |
| } |
| } |
| |
| |
| Schedule* RawMachineAssembler::Export() { |
| // Compute the correct codegen order. |
| DCHECK(schedule_->rpo_order()->empty()); |
| Scheduler::ComputeSpecialRPO(schedule_); |
| // Invalidate MachineAssembler. |
| Schedule* schedule = schedule_; |
| schedule_ = NULL; |
| return schedule; |
| } |
| |
| |
| Node* RawMachineAssembler::Parameter(int index) { |
| DCHECK(0 <= index && index < parameter_count()); |
| return parameters_[index]; |
| } |
| |
| |
| RawMachineAssembler::Label* RawMachineAssembler::Exit() { |
| exit_label_.used_ = true; |
| return &exit_label_; |
| } |
| |
| |
| void RawMachineAssembler::Goto(Label* label) { |
| DCHECK(current_block_ != schedule()->exit()); |
| schedule()->AddGoto(CurrentBlock(), Use(label)); |
| current_block_ = NULL; |
| } |
| |
| |
| void RawMachineAssembler::Branch(Node* condition, Label* true_val, |
| Label* false_val) { |
| DCHECK(current_block_ != schedule()->exit()); |
| Node* branch = NewNode(common()->Branch(), condition); |
| schedule()->AddBranch(CurrentBlock(), branch, Use(true_val), Use(false_val)); |
| current_block_ = NULL; |
| } |
| |
| |
| void RawMachineAssembler::Return(Node* value) { |
| schedule()->AddReturn(CurrentBlock(), value); |
| current_block_ = NULL; |
| } |
| |
| |
| void RawMachineAssembler::Deoptimize(Node* state) { |
| Node* deopt = graph()->NewNode(common()->Deoptimize(), state); |
| schedule()->AddDeoptimize(CurrentBlock(), deopt); |
| current_block_ = NULL; |
| } |
| |
| |
| Node* RawMachineAssembler::CallJS0(Node* function, Node* receiver, |
| Label* continuation, Label* deoptimization) { |
| CallDescriptor* descriptor = Linkage::GetJSCallDescriptor(1, zone()); |
| Node* call = graph()->NewNode(common()->Call(descriptor), function, receiver); |
| schedule()->AddCall(CurrentBlock(), call, Use(continuation), |
| Use(deoptimization)); |
| current_block_ = NULL; |
| return call; |
| } |
| |
| |
| Node* RawMachineAssembler::CallRuntime1(Runtime::FunctionId function, |
| Node* arg0, Label* continuation, |
| Label* deoptimization) { |
| CallDescriptor* descriptor = |
| Linkage::GetRuntimeCallDescriptor(function, 1, Operator::kNoProperties, |
| CallDescriptor::kCanDeoptimize, zone()); |
| |
| Node* centry = HeapConstant(CEntryStub(isolate(), 1).GetCode()); |
| Node* ref = NewNode( |
| common()->ExternalConstant(ExternalReference(function, isolate()))); |
| Node* arity = Int32Constant(1); |
| Node* context = Parameter(1); |
| |
| Node* call = graph()->NewNode(common()->Call(descriptor), centry, arg0, ref, |
| arity, context); |
| schedule()->AddCall(CurrentBlock(), call, Use(continuation), |
| Use(deoptimization)); |
| current_block_ = NULL; |
| return call; |
| } |
| |
| |
| void RawMachineAssembler::Bind(Label* label) { |
| DCHECK(current_block_ == NULL); |
| DCHECK(!label->bound_); |
| label->bound_ = true; |
| current_block_ = EnsureBlock(label); |
| } |
| |
| |
| BasicBlock* RawMachineAssembler::Use(Label* label) { |
| label->used_ = true; |
| return EnsureBlock(label); |
| } |
| |
| |
| BasicBlock* RawMachineAssembler::EnsureBlock(Label* label) { |
| if (label->block_ == NULL) label->block_ = schedule()->NewBasicBlock(); |
| return label->block_; |
| } |
| |
| |
| BasicBlock* RawMachineAssembler::CurrentBlock() { |
| DCHECK(current_block_); |
| return current_block_; |
| } |
| |
| |
| Node* RawMachineAssembler::MakeNode(Operator* op, int input_count, |
| Node** inputs) { |
| DCHECK(ScheduleValid()); |
| DCHECK(current_block_ != NULL); |
| Node* node = graph()->NewNode(op, input_count, inputs); |
| BasicBlock* block = op->opcode() == IrOpcode::kParameter ? schedule()->start() |
| : CurrentBlock(); |
| schedule()->AddNode(block, node); |
| return node; |
| } |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |