[runtime] Unify and fix the strict equality comparison.

src/objects-inl.h

 // Copyright 2012 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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 1503 matching lines @@
   return ((READ_INT_FIELD(this, kExponentOffset) & kExponentMask) >>
           kExponentShift) - kExponentBias;
 }
 
 
 int HeapNumber::get_sign() {
   return READ_INT_FIELD(this, kExponentOffset) & kSignMask;
 }
 
 
+bool Simd128Value::Equals(Simd128Value* that) {
+#define SIMD128_VALUE(TYPE, Type, type, lane_count, lane_type) \
+  if (this->Is##Type()) {                                      \
+    if (!that->Is##Type()) return false;                       \
+    return Type::cast(this)->Equals(Type::cast(that));         \
+  }
+  SIMD128_TYPES(SIMD128_VALUE)
+#undef SIMD128_VALUE
+  return false;
+}
+
+
+#define SIMD128_VALUE_EQUALS(TYPE, Type, type, lane_count, lane_type) \
+  bool Type::Equals(Type* that) {                                     \
+    for (int lane = 0; lane < lane_count; ++lane) {                   \
+      if (this->get_lane(lane) != that->get_lane(lane)) return false; \
+    }                                                                 \
+    return true;                                                      \
+  }
+SIMD128_TYPES(SIMD128_VALUE_EQUALS)
+#undef SIMD128_VALUE_EQUALS
+
+
 float Float32x4::get_lane(int lane) const {
   DCHECK(lane < 4 && lane >= 0);
 #if defined(V8_TARGET_LITTLE_ENDIAN)
   return READ_FLOAT_FIELD(this, kValueOffset + lane * kFloatSize);
 #elif defined(V8_TARGET_BIG_ENDIAN)
   return READ_FLOAT_FIELD(this, kValueOffset + (3 - lane) * kFloatSize);
 #else
 #error Unknown byte ordering
 #endif
 }
@@ skipping 6358 matching lines @@
 #undef READ_INT64_FIELD
 #undef WRITE_INT64_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_