[Interpreter] Add support for cast operators to bytecode graph builder and

src/compiler/bytecode-graph-builder.cc

Index: src/compiler/bytecode-graph-builder.cc
diff --git a/src/compiler/bytecode-graph-builder.cc b/src/compiler/bytecode-graph-builder.cc
index 5bb208ce94f7e5d8a2550d24cb9d0a1f4268c29b..9015caeacebcb9aa2dcce691a3e9e93d3203f676 100644
--- a/src/compiler/bytecode-graph-builder.cc
+++ b/src/compiler/bytecode-graph-builder.cc
@@ -1000,25 +1000,37 @@ void BytecodeGraphBuilder::VisitTestInstanceOf(
 
 void BytecodeGraphBuilder::VisitToBoolean(
     const interpreter::BytecodeArrayIterator& iterator) {
-  UNIMPLEMENTED();
+  Node* node =

[oth, 2015/11/23 13:46:41]

There's a common pattern here and also in VisitLogicalNot/VisitTypeOf so perhaps
an idea to have a common method VisitAccumulatorOperator(const Operation* op)
that all these methods use.

[mythria, 2015/11/24 12:58:48]

I added a method for cast operators. I did not include
VisitLogicalNot/VisitTypeOf because they do not take any frame state inputs.

+      NewNode(javascript()->ToBoolean(), environment()->LookupAccumulator());
+  AddEmptyFrameStateInputs(node);
+  environment()->BindAccumulator(node);
 }
 
 
 void BytecodeGraphBuilder::VisitToName(
     const interpreter::BytecodeArrayIterator& iterator) {
-  UNIMPLEMENTED();
+  Node* node =
+      NewNode(javascript()->ToName(), environment()->LookupAccumulator());
+  AddEmptyFrameStateInputs(node);
+  environment()->BindAccumulator(node);
 }
 
 
 void BytecodeGraphBuilder::VisitToNumber(
     const interpreter::BytecodeArrayIterator& iterator) {
-  UNIMPLEMENTED();
+  Node* node =
+      NewNode(javascript()->ToNumber(), environment()->LookupAccumulator());
+  AddEmptyFrameStateInputs(node);
+  environment()->BindAccumulator(node);
 }
 
 
 void BytecodeGraphBuilder::VisitToObject(
     const interpreter::BytecodeArrayIterator& iterator) {
-  UNIMPLEMENTED();
+  Node* node =
+      NewNode(javascript()->ToObject(), environment()->LookupAccumulator());
+  AddEmptyFrameStateInputs(node);
+  environment()->BindAccumulator(node);
 }