[turbofan] Cleanup Schedule and related classes.

src/compiler/instruction.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/common-operator.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/instruction.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 369 matching lines @@
 }
 
 
 static InstructionBlock* InstructionBlockFor(Zone* zone,
                                              const BasicBlock* block) {
   InstructionBlock* instr_block = new (zone) InstructionBlock(
       zone, block->id(), block->GetRpoNumber(), GetRpo(block->loop_header()),
       GetLoopEndRpo(block), block->deferred());
   // Map successors and precessors
   instr_block->successors().reserve(block->SuccessorCount());
-  for (auto it = block->successors_begin(); it != block->successors_end();
-       ++it) {
-    instr_block->successors().push_back((*it)->GetRpoNumber());
+  for (BasicBlock* successor : block->successors()) {
+    instr_block->successors().push_back(successor->GetRpoNumber());
   }
   instr_block->predecessors().reserve(block->PredecessorCount());
-  for (auto it = block->predecessors_begin(); it != block->predecessors_end();
-       ++it) {
-    instr_block->predecessors().push_back((*it)->GetRpoNumber());
+  for (BasicBlock* predecessor : block->predecessors()) {
+    instr_block->predecessors().push_back(predecessor->GetRpoNumber());
   }
   return instr_block;
 }
 
 
 InstructionBlocks* InstructionSequence::InstructionBlocksFor(
     Zone* zone, const Schedule* schedule) {
   InstructionBlocks* blocks = zone->NewArray<InstructionBlocks>(1);
   new (blocks) InstructionBlocks(
       static_cast<int>(schedule->rpo_order()->size()), NULL, zone);
@@ skipping 285 matching lines @@
       os << " B" << succ_block->id();
     }
     os << "\n";
   }
   return os;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8