X64 Crankshaft: Add TypeRecordingBinaryStub to X64

src/type-info.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 102 matching lines @@
            t == kNonPrimitive);
     return TypeInfo(t);
   }
 
   // Return the weakest (least precise) common type.
   static TypeInfo Combine(TypeInfo a, TypeInfo b) {
     return TypeInfo(static_cast<Type>(a.type_ & b.type_));
   }
 
 
-  // Integer32 is an integer that can be represented as either a signed
-  // 32-bit integer or as an unsigned 32-bit integer. It has to be
-  // in the range [-2^31, 2^32 - 1]. We also have to check for negative 0
+  // Integer32 is an integer that can be represented as a signed
+  // 32-bit integer. It has to be
+  // in the range [-2^31, 2^31 - 1]. We also have to check for negative 0
   // as it is not an Integer32.
   static inline bool IsInt32Double(double value) {
     const DoubleRepresentation minus_zero(-0.0);
     DoubleRepresentation rep(value);
     if (rep.bits == minus_zero.bits) return false;
     if (value >= kMinInt && value <= kMaxInt &&
         value == static_cast<int32_t>(value)) {
       return true;
     }
     return false;
   }
 
+  static inline bool IsSmiDouble(double value) {
+    const DoubleRepresentation minus_zero(-0.0);
+    DoubleRepresentation rep(value);
+    if (rep.bits == minus_zero.bits) return false;
+    if (value >= Smi::kMinValue && value <= Smi::kMaxValue &&
+        value == static_cast<int32_t>(value)) {
+      return true;
+    }
+    return false;
+  }
+
+
+
   static TypeInfo TypeFromValue(Handle<Object> value);
 
   bool Equals(const TypeInfo& other) {
     return type_ == other.type_;
   }
 
   inline bool IsUnknown() {
     ASSERT(type_ != kUninitialized);
     return type_ == kUnknown;
   }
@@ skipping 126 matching lines @@
 
   Handle<Context> global_context_;
   Handle<JSObject> map_;
 
   DISALLOW_COPY_AND_ASSIGN(TypeFeedbackOracle);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_TYPE_INFO_H_