Refactor VisitProperty, add starting point for SIMD.js support.

src/typing-asm.h

Index: src/typing-asm.h
diff --git a/src/typing-asm.h b/src/typing-asm.h
index 5f7a929a1e5bf99e7c8c1d4136ceb3a97e738d49..0f5306fa123e5f72228f29ee59bfd890e3d94aa4 100644
--- a/src/typing-asm.h
+++ b/src/typing-asm.h
@@ -22,6 +22,7 @@ class AsmTyper : public AstVisitor {
   explicit AsmTyper(Isolate* isolate, Zone* zone, Script* script,
                     FunctionLiteral* root);
   bool Validate();
+  void set_allow_simd(bool simd);
   const char* error_message() { return error_message_; }
 
   DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
@@ -31,6 +32,7 @@ class AsmTyper : public AstVisitor {
   Script* script_;
   FunctionLiteral* root_;
   bool valid_;
+  bool allow_simd_;
 
   // Information for bi-directional typing with a cap on nesting depth.
   Type* expected_type_;
@@ -44,6 +46,10 @@ class AsmTyper : public AstVisitor {
   ObjectTypeMap stdlib_types_;
   ObjectTypeMap stdlib_heap_types_;
   ObjectTypeMap stdlib_math_types_;
+#define V(NAME, Name, name, lane_count, lane_type) \
+  ObjectTypeMap stdlib_simd_##name##_types_;
+  SIMD128_TYPES(V)
+#undef V
 
   // Map from Variable* to global/local variable Type*.
   ZoneHashMap global_variable_type_;
@@ -71,6 +77,13 @@ class AsmTyper : public AstVisitor {
 
   void VisitHeapAccess(Property* expr);
 
+  bool IsMathObject(Expression* expr);
+  bool IsSIMDObject(Expression* expr);
+  bool IsSIMDTypeObject(Expression* expr, const char* name);
+  bool IsStdlibObject(Expression* expr);
+
+  void VisitSIMDProperty(Property* expr);
+
   int ElementShiftSize(Type* type);
   Type* StorageType(Type* type);