b5b00cc031
R=mstarzinger@chromium.org Review URL: https://codereview.chromium.org/1177353003 Cr-Commit-Position: refs/heads/master@{#28993}
189 lines
6.5 KiB
C++
189 lines
6.5 KiB
C++
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/code-factory.h"
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#include "src/compiler/pipeline.h"
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#include "src/compiler/scheduler.h"
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#include "test/unittests/compiler/raw-machine-assembler.h"
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namespace v8 {
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namespace internal {
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namespace compiler {
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RawMachineAssembler::RawMachineAssembler(Isolate* isolate, Graph* graph,
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const MachineSignature* machine_sig,
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MachineType word,
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MachineOperatorBuilder::Flags flags)
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: GraphBuilder(isolate, graph),
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schedule_(new (zone()) Schedule(zone())),
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machine_(zone(), word, flags),
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common_(zone()),
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machine_sig_(machine_sig),
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call_descriptor_(
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Linkage::GetSimplifiedCDescriptor(graph->zone(), machine_sig)),
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parameters_(NULL),
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current_block_(schedule()->start()) {
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int param_count = static_cast<int>(parameter_count());
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Node* s = graph->NewNode(common_.Start(param_count));
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graph->SetStart(s);
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if (parameter_count() == 0) return;
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parameters_ = zone()->NewArray<Node*>(param_count);
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for (size_t i = 0; i < parameter_count(); ++i) {
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parameters_[i] =
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NewNode(common()->Parameter(static_cast<int>(i)), graph->start());
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}
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}
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Schedule* RawMachineAssembler::Export() {
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// Compute the correct codegen order.
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DCHECK(schedule_->rpo_order()->empty());
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Scheduler::ComputeSpecialRPO(zone(), schedule_);
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// Invalidate MachineAssembler.
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Schedule* schedule = schedule_;
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schedule_ = NULL;
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return schedule;
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}
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Node* RawMachineAssembler::Parameter(size_t index) {
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DCHECK(index < parameter_count());
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return parameters_[index];
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}
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void RawMachineAssembler::Goto(Label* label) {
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DCHECK(current_block_ != schedule()->end());
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schedule()->AddGoto(CurrentBlock(), Use(label));
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current_block_ = NULL;
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}
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void RawMachineAssembler::Branch(Node* condition, Label* true_val,
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Label* false_val) {
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DCHECK(current_block_ != schedule()->end());
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Node* branch = NewNode(common()->Branch(), condition);
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schedule()->AddBranch(CurrentBlock(), branch, Use(true_val), Use(false_val));
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current_block_ = NULL;
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}
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void RawMachineAssembler::Switch(Node* index, Label* default_label,
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int32_t* case_values, Label** case_labels,
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size_t case_count) {
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DCHECK_NE(schedule()->end(), current_block_);
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size_t succ_count = case_count + 1;
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Node* switch_node = NewNode(common()->Switch(succ_count), index);
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BasicBlock** succ_blocks = zone()->NewArray<BasicBlock*>(succ_count);
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for (size_t index = 0; index < case_count; ++index) {
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int32_t case_value = case_values[index];
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BasicBlock* case_block = Use(case_labels[index]);
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Node* case_node =
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graph()->NewNode(common()->IfValue(case_value), switch_node);
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schedule()->AddNode(case_block, case_node);
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succ_blocks[index] = case_block;
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}
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BasicBlock* default_block = Use(default_label);
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Node* default_node = graph()->NewNode(common()->IfDefault(), switch_node);
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schedule()->AddNode(default_block, default_node);
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succ_blocks[case_count] = default_block;
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schedule()->AddSwitch(CurrentBlock(), switch_node, succ_blocks, succ_count);
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current_block_ = nullptr;
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}
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void RawMachineAssembler::Return(Node* value) {
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Node* ret = NewNode(common()->Return(), value);
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schedule()->AddReturn(CurrentBlock(), ret);
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current_block_ = NULL;
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}
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Node* RawMachineAssembler::CallFunctionStub0(Node* function, Node* receiver,
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Node* context, Node* frame_state,
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CallFunctionFlags flags) {
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Callable callable = CodeFactory::CallFunction(isolate(), 0, flags);
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CallDescriptor* desc = Linkage::GetStubCallDescriptor(
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isolate(), zone(), callable.descriptor(), 1,
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CallDescriptor::kNeedsFrameState, Operator::kNoProperties);
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Node* stub_code = HeapConstant(callable.code());
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Node* call = graph()->NewNode(common()->Call(desc), stub_code, function,
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receiver, context, frame_state);
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schedule()->AddNode(CurrentBlock(), call);
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return call;
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}
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Node* RawMachineAssembler::CallJS0(Node* function, Node* receiver,
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Node* context, Node* frame_state) {
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CallDescriptor* descriptor = Linkage::GetJSCallDescriptor(
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zone(), false, 1, CallDescriptor::kNeedsFrameState);
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Node* call = graph()->NewNode(common()->Call(descriptor), function, receiver,
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context, frame_state);
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schedule()->AddNode(CurrentBlock(), call);
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return call;
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}
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Node* RawMachineAssembler::CallRuntime1(Runtime::FunctionId function,
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Node* arg0, Node* context,
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Node* frame_state) {
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CallDescriptor* descriptor = Linkage::GetRuntimeCallDescriptor(
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zone(), function, 1, Operator::kNoProperties);
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Node* centry = HeapConstant(CEntryStub(isolate(), 1).GetCode());
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Node* ref = NewNode(
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common()->ExternalConstant(ExternalReference(function, isolate())));
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Node* arity = Int32Constant(1);
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Node* call = graph()->NewNode(common()->Call(descriptor), centry, arg0, ref,
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arity, context, frame_state);
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schedule()->AddNode(CurrentBlock(), call);
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return call;
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}
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void RawMachineAssembler::Bind(Label* label) {
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DCHECK(current_block_ == NULL);
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DCHECK(!label->bound_);
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label->bound_ = true;
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current_block_ = EnsureBlock(label);
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}
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BasicBlock* RawMachineAssembler::Use(Label* label) {
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label->used_ = true;
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return EnsureBlock(label);
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}
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BasicBlock* RawMachineAssembler::EnsureBlock(Label* label) {
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if (label->block_ == NULL) label->block_ = schedule()->NewBasicBlock();
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return label->block_;
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}
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BasicBlock* RawMachineAssembler::CurrentBlock() {
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DCHECK(current_block_);
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return current_block_;
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}
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Node* RawMachineAssembler::MakeNode(const Operator* op, int input_count,
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Node** inputs, bool incomplete) {
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DCHECK(ScheduleValid());
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DCHECK(current_block_ != NULL);
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Node* node = graph()->NewNode(op, input_count, inputs, incomplete);
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BasicBlock* block = op->opcode() == IrOpcode::kParameter ? schedule()->start()
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: CurrentBlock();
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if (op->opcode() != IrOpcode::kReturn) {
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schedule()->AddNode(block, node);
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}
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return node;
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}
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} // namespace compiler
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} // namespace internal
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} // namespace v8
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