V8: Add SIMD functions.

src/objects.cc

 // Copyright 2013 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.
 
 #include <iomanip>
 #include <sstream>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 1616 matching lines @@
 
 #define FIELD_ADDR_CONST(p, offset) \
   (reinterpret_cast<const byte*>(p) + offset - kHeapObjectTag)
 
 #define READ_INT32_FIELD(p, offset) \
   (*reinterpret_cast<const int32_t*>(FIELD_ADDR_CONST(p, offset)))
 
 #define READ_INT64_FIELD(p, offset) \
   (*reinterpret_cast<const int64_t*>(FIELD_ADDR_CONST(p, offset)))
 
+#define READ_BYTE_FIELD(p, offset) \
+  (*reinterpret_cast<const byte*>(FIELD_ADDR_CONST(p, offset)))
+
 
 bool Simd128Value::BitwiseEquals(const Simd128Value* other) const {
   return READ_INT64_FIELD(this, kValueOffset) ==
              READ_INT64_FIELD(other, kValueOffset) &&
          READ_INT64_FIELD(this, kValueOffset + kInt64Size) ==
              READ_INT64_FIELD(other, kValueOffset + kInt64Size);
 }
 
 
 uint32_t Simd128Value::Hash() const {
   uint32_t seed = v8::internal::kZeroHashSeed;
   uint32_t hash;
   hash = ComputeIntegerHash(READ_INT32_FIELD(this, kValueOffset), seed);
   hash = ComputeIntegerHash(
       READ_INT32_FIELD(this, kValueOffset + 1 * kInt32Size), hash * 31);
   hash = ComputeIntegerHash(
       READ_INT32_FIELD(this, kValueOffset + 2 * kInt32Size), hash * 31);
   hash = ComputeIntegerHash(
       READ_INT32_FIELD(this, kValueOffset + 3 * kInt32Size), hash * 31);
   return hash;
 }
 
 
+void Simd128Value::CopyBits(void* destination) const {
+  memcpy(destination, &READ_BYTE_FIELD(this, kValueOffset), kSimd128Size);
+}
+
+
 String* JSReceiver::class_name() {
   if (IsJSFunction() || IsJSFunctionProxy()) {
     return GetHeap()->Function_string();
   }
   Object* maybe_constructor = map()->GetConstructor();
   if (maybe_constructor->IsJSFunction()) {
     JSFunction* constructor = JSFunction::cast(maybe_constructor);
     return String::cast(constructor->shared()->instance_class_name());
   }
   // If the constructor is not present, return "Object".
@@ skipping 14192 matching lines @@
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 
 }  // namespace internal
 }  // namespace v8