Move RMA::Label out of the class, so it can be forward declared.

src/compiler/raw-machine-assembler.cc

 // 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/raw-machine-assembler.h"
 
 #include "src/code-factory.h"
 #include "src/compiler/pipeline.h"
 #include "src/compiler/scheduler.h"
 
@@ skipping 33 matching lines @@
   return schedule;
 }
 
 
 Node* RawMachineAssembler::Parameter(size_t index) {
   DCHECK(index < parameter_count());
   return parameters_[index];
 }
 
 
-void RawMachineAssembler::Goto(Label* label) {
+void RawMachineAssembler::Goto(RawMachineLabel* label) {
   DCHECK(current_block_ != schedule()->end());
   schedule()->AddGoto(CurrentBlock(), Use(label));
   current_block_ = nullptr;
 }
 
 
-void RawMachineAssembler::Branch(Node* condition, Label* true_val,
-                                 Label* false_val) {
+void RawMachineAssembler::Branch(Node* condition, RawMachineLabel* true_val,
+                                 RawMachineLabel* false_val) {
   DCHECK(current_block_ != schedule()->end());
   Node* branch = AddNode(common()->Branch(), condition);
   schedule()->AddBranch(CurrentBlock(), branch, Use(true_val), Use(false_val));
   current_block_ = nullptr;
 }
 
 
-void RawMachineAssembler::Switch(Node* index, Label* default_label,
-                                 int32_t* case_values, Label** case_labels,
+void RawMachineAssembler::Switch(Node* index, RawMachineLabel* default_label,
+                                 int32_t* case_values,
+                                 RawMachineLabel** case_labels,
                                  size_t case_count) {
   DCHECK_NE(schedule()->end(), current_block_);
   size_t succ_count = case_count + 1;
   Node* switch_node = AddNode(common()->Switch(succ_count), index);
   BasicBlock** succ_blocks = zone()->NewArray<BasicBlock*>(succ_count);
   for (size_t index = 0; index < case_count; ++index) {
     int32_t case_value = case_values[index];
     BasicBlock* case_block = Use(case_labels[index]);
     Node* case_node =
         graph()->NewNode(common()->IfValue(case_value), switch_node);
@@ skipping 203 matching lines @@
                   arg6,
                   arg7,
                   graph()->start(),
                   graph()->start()};
   const CallDescriptor* descriptor =
       Linkage::GetSimplifiedCDescriptor(zone(), builder.Build());
   return AddNode(common()->Call(descriptor), arraysize(args), args);
 }
 
 
-void RawMachineAssembler::Bind(Label* label) {
+void RawMachineAssembler::Bind(RawMachineLabel* label) {
   DCHECK(current_block_ == nullptr);
   DCHECK(!label->bound_);
   label->bound_ = true;
   current_block_ = EnsureBlock(label);
 }
 
 
-BasicBlock* RawMachineAssembler::Use(Label* label) {
+BasicBlock* RawMachineAssembler::Use(RawMachineLabel* label) {
   label->used_ = true;
   return EnsureBlock(label);
 }
 
 
-BasicBlock* RawMachineAssembler::EnsureBlock(Label* label) {
+BasicBlock* RawMachineAssembler::EnsureBlock(RawMachineLabel* label) {
   if (label->block_ == nullptr) label->block_ = schedule()->NewBasicBlock();
   return label->block_;
 }
 
 
 BasicBlock* RawMachineAssembler::CurrentBlock() {
   DCHECK(current_block_);
   return current_block_;
 }
 
 
 Node* RawMachineAssembler::AddNode(const Operator* op, int input_count,
                                    Node** inputs) {
   DCHECK_NOT_NULL(schedule_);
   DCHECK(current_block_ != nullptr);
   Node* node = MakeNode(op, input_count, inputs);
   schedule()->AddNode(CurrentBlock(), node);
   return node;
 }
 
 
 Node* RawMachineAssembler::MakeNode(const Operator* op, int input_count,
                                     Node** inputs) {
   // The raw machine assembler nodes do not have effect and control inputs,
   // so we disable checking input counts here.
   return graph()->NewNodeUnchecked(op, input_count, inputs);
 }
 
+
+RawMachineLabel::RawMachineLabel()
+    : block_(NULL), used_(false), bound_(false) {}
+
+
+RawMachineLabel::~RawMachineLabel() { DCHECK(bound_ || !used_); }
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8