Make loop assignment analysis a separate phase.

src/compiler/ast-graph-builder.h

 // 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.
 
 #ifndef V8_COMPILER_AST_GRAPH_BUILDER_H_
 #define V8_COMPILER_AST_GRAPH_BUILDER_H_
 
 #include "src/v8.h"
 
 #include "src/ast.h"
 #include "src/compiler/graph-builder.h"
 #include "src/compiler/js-graph.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 class ControlBuilder;
 class Graph;
 class LoopAssignmentAnalysis;
 class LoopBuilder;
 
 // The AstGraphBuilder produces a high-level IR graph, based on an
 // underlying AST. The produced graph can either be compiled into a
 // stand-alone function or be wired into another graph for the purposes
 // of function inlining.
 class AstGraphBuilder : public StructuredGraphBuilder, public AstVisitor {
  public:
-  AstGraphBuilder(Zone* local_zone, CompilationInfo* info, JSGraph* jsgraph);
+  AstGraphBuilder(Zone* local_zone, CompilationInfo* info, JSGraph* jsgraph,
+                  LoopAssignmentAnalysis* loop_assignment = NULL);
 
   // Creates a graph by visiting the entire AST.
   bool CreateGraph();
 
  protected:
   class AstContext;
   class AstEffectContext;
   class AstValueContext;
   class AstTestContext;
   class BreakableScope;
@@ skipping 401 matching lines @@
 
 Scope* AstGraphBuilder::current_scope() const {
   return execution_context_->scope();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_AST_GRAPH_BUILDER_H_