Experimental implementation: Exposing SIMD instructions into JavaScript

src/property-details.h

 // Copyright 2012 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 71 matching lines @@
  public:
   enum Kind {
     kNone,
     kInteger8,
     kUInteger8,
     kInteger16,
     kUInteger16,
     kSmi,
     kInteger32,
     kDouble,
+    kFloat32x4,
+    kInt32x4,
     kHeapObject,
     kTagged,
     kExternal,
     kNumRepresentations
   };
 
   Representation() : kind_(kNone) { }
 
   static Representation None() { return Representation(kNone); }
   static Representation Tagged() { return Representation(kTagged); }
   static Representation Integer8() { return Representation(kInteger8); }
   static Representation UInteger8() { return Representation(kUInteger8); }
   static Representation Integer16() { return Representation(kInteger16); }
   static Representation UInteger16() {
     return Representation(kUInteger16);
   }
   static Representation Smi() { return Representation(kSmi); }
   static Representation Integer32() { return Representation(kInteger32); }
   static Representation Double() { return Representation(kDouble); }
+  static Representation Float32x4() { return Representation(kFloat32x4); }
+  static Representation Int32x4() { return Representation(kInt32x4); }
   static Representation HeapObject() { return Representation(kHeapObject); }
   static Representation External() { return Representation(kExternal); }
 
   static Representation FromKind(Kind kind) { return Representation(kind); }
 
   // TODO(rossberg): this should die eventually.
   static Representation FromType(TypeInfo info);
   static Representation FromType(Handle<Type> type);
 
   bool Equals(const Representation& other) const {
     return kind_ == other.kind_;
   }
 
   bool IsCompatibleForLoad(const Representation& other) const {
     return (IsDouble() && other.IsDouble()) ||
         (!IsDouble() && !other.IsDouble());
   }
 
   bool IsCompatibleForStore(const Representation& other) const {
     return Equals(other);
   }
 
   bool is_more_general_than(const Representation& other) const {
     if (kind_ == kExternal && other.kind_ == kNone) return true;
     if (kind_ == kExternal && other.kind_ == kExternal) return false;
     if (kind_ == kNone && other.kind_ == kExternal) return false;
 
     ASSERT(kind_ != kExternal);
     ASSERT(other.kind_ != kExternal);
-    if (IsHeapObject()) return other.IsDouble() || other.IsNone();
+    if (IsHeapObject()) {
+      return other.IsDouble() || other.IsFloat32x4() || other.IsInt32x4() ||
+          other.IsNone();
+    }
     if (kind_ == kUInteger8 && other.kind_ == kInteger8) return false;
     if (kind_ == kUInteger16 && other.kind_ == kInteger16) return false;
     return kind_ > other.kind_;
   }
 
   bool fits_into(const Representation& other) const {
     return other.is_more_general_than(*this) || other.Equals(*this);
   }
 
   Representation generalize(Representation other) {
@@ skipping 21 matching lines @@
   bool IsInteger8() const { return kind_ == kInteger8; }
   bool IsUInteger8() const { return kind_ == kUInteger8; }
   bool IsInteger16() const { return kind_ == kInteger16; }
   bool IsUInteger16() const { return kind_ == kUInteger16; }
   bool IsTagged() const { return kind_ == kTagged; }
   bool IsSmi() const { return kind_ == kSmi; }
   bool IsSmiOrTagged() const { return IsSmi() || IsTagged(); }
   bool IsInteger32() const { return kind_ == kInteger32; }
   bool IsSmiOrInteger32() const { return IsSmi() || IsInteger32(); }
   bool IsDouble() const { return kind_ == kDouble; }
+  bool IsFloat32x4() const { return kind_ == kFloat32x4; }
+  bool IsInt32x4() const { return kind_ == kInt32x4; }
   bool IsHeapObject() const { return kind_ == kHeapObject; }
   bool IsExternal() const { return kind_ == kExternal; }
   bool IsSpecialization() const {
     return IsInteger8() || IsUInteger8() ||
       IsInteger16() || IsUInteger16() ||
       IsSmi() || IsInteger32() || IsDouble();
   }
   const char* Mnemonic() const;
 
  private:
@@ skipping 127 matching lines @@
   PropertyDetails(int value, PropertyAttributes attributes) {
     value_ = AttributesField::update(value, attributes);
   }
 
   uint32_t value_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_PROPERTY_DETAILS_H_