Minor cleanup using BooleanConstant in graph builder.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/687103004

Cr-Commit-Position: refs/heads/master@{#24996}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24996 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/compiler/ast-graph-builder.cc

@@ -588,13 +588,6 @@ void AstGraphBuilder::VisitSwitchStatement(SwitchStatement* stmt) {
 }
 
 
-BitVector* AstGraphBuilder::GetVariablesAssignedInLoop(
-    IterationStatement* stmt) {
-  if (loop_assignment_analysis_ == NULL) return NULL;
-  return loop_assignment_analysis_->GetVariablesAssignedInLoop(stmt);
-}
-
-
 void AstGraphBuilder::VisitDoWhileStatement(DoWhileStatement* stmt) {
   LoopBuilder while_loop(this);
   while_loop.BeginLoop(GetVariablesAssignedInLoop(stmt));
@@ -826,8 +819,7 @@ void AstGraphBuilder::VisitFunctionLiteral(FunctionLiteral* expr) {
 
   // Create node to instantiate a new closure.
   Node* info = jsgraph()->Constant(shared_info);
-  Node* pretenure = expr->pretenure() ? jsgraph()->TrueConstant()
-                                      : jsgraph()->FalseConstant();
+  Node* pretenure = jsgraph()->BooleanConstant(expr->pretenure());
   const Operator* op = javascript()->CallRuntime(Runtime::kNewClosure, 3);
   Node* value = NewNode(op, context, info, pretenure);
   ast_context()->ProduceValue(value);
@@ -1933,8 +1925,7 @@ Node* AstGraphBuilder::BuildVariableDelete(
     case Variable::LOCAL:
     case Variable::CONTEXT:
       // Local var, const, or let variable or context variable.
-      return variable->is_this() ? jsgraph()->TrueConstant()
-                                 : jsgraph()->FalseConstant();
+      return jsgraph()->BooleanConstant(variable->is_this());
     case Variable::LOOKUP: {
       // Dynamic lookup of context variable (anywhere in the chain).
       Node* name = jsgraph()->Constant(variable->name());
@@ -2172,6 +2163,13 @@ void AstGraphBuilder::PrepareFrameState(Node* node, BailoutId ast_id,
   }
 }
 
+
+BitVector* AstGraphBuilder::GetVariablesAssignedInLoop(
+    IterationStatement* stmt) {
+  if (loop_assignment_analysis_ == NULL) return NULL;
+  return loop_assignment_analysis_->GetVariablesAssignedInLoop(stmt);
 }
-}
-}  // namespace v8::internal::compiler
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8

src/compiler/ast-graph-builder.h

@@ -136,6 +136,7 @@ class AstGraphBuilder : public StructuredGraphBuilder, public AstVisitor {
   SetOncePointer<Node> function_closure_;
   SetOncePointer<Node> function_context_;
 
+  // Result of loop assignment analysis performed before graph creation.
   LoopAssignmentAnalysis* loop_assignment_analysis_;
 
   CompilationInfo* info() const { return info_; }
@@ -189,8 +190,6 @@ class AstGraphBuilder : public StructuredGraphBuilder, public AstVisitor {
       Node* node, BailoutId ast_id,
       OutputFrameStateCombine combine = OutputFrameStateCombine::Ignore());
 
-  OutputFrameStateCombine StateCombineFromAstContext();
-
   BitVector* GetVariablesAssignedInLoop(IterationStatement* stmt);
 
   DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
@@ -439,8 +438,9 @@ class AstGraphBuilder::ContextScope BASE_EMBEDDED {
 Scope* AstGraphBuilder::current_scope() const {
   return execution_context_->scope();
 }
-}
-}
-}  // namespace v8::internal::compiler
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_COMPILER_AST_GRAPH_BUILDER_H_