Make RawMachineAssemblerTest emitting CFG always have a dummy End block

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/code-factory.h"
 #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(Isolate* isolate, Graph* graph,
                                          const MachineSignature* machine_sig,
                                          MachineType word,
                                          MachineOperatorBuilder::Flags flags)
     : GraphBuilder(isolate, graph),
       schedule_(new (zone()) Schedule(zone())),
       machine_(zone(), word, flags),
       common_(zone()),
       machine_sig_(machine_sig),
       call_descriptor_(
           Linkage::GetSimplifiedCDescriptor(graph->zone(), machine_sig)),
       parameters_(NULL),
-      exit_label_(schedule()->end()),
       current_block_(schedule()->start()) {
   int param_count = static_cast<int>(parameter_count());
   Node* s = graph->NewNode(common_.Start(param_count));
   graph->SetStart(s);
   if (parameter_count() == 0) return;
   parameters_ = zone()->NewArray<Node*>(param_count);
   for (size_t i = 0; i < parameter_count(); ++i) {
     parameters_[i] =
         NewNode(common()->Parameter(static_cast<int>(i)), graph->start());
   }
@@ skipping 10 matching lines @@
   return schedule;
 }
 
 
 Node* RawMachineAssembler::Parameter(size_t index) {
   DCHECK(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()->end());
   schedule()->AddGoto(CurrentBlock(), Use(label));
   current_block_ = NULL;
 }
 
 
 void RawMachineAssembler::Branch(Node* condition, Label* true_val,
                                  Label* false_val) {
   DCHECK(current_block_ != schedule()->end());
@@ skipping 113 matching lines @@
                                                            : CurrentBlock();
   if (op->opcode() != IrOpcode::kReturn) {
     schedule()->AddNode(block, node);
   }
   return node;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8