Experimental implementation: Exposing SIMD instructions into JavaScript

src/heap.cc

 // 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 2672 matching lines @@
         AllocateMap(FIXED_ARRAY_TYPE, kVariableSizeSentinel);
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_scope_info_map(Map::cast(obj));
 
   { MaybeObject* maybe_obj = AllocateMap(HEAP_NUMBER_TYPE, HeapNumber::kSize);
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_heap_number_map(Map::cast(obj));
 
+  { MaybeObject* maybe_obj = AllocateMap(FLOAT32x4_TYPE, Float32x4::kSize);
+    if (!maybe_obj->ToObject(&obj)) return false;
+  }
+  set_float32x4_map(Map::cast(obj));
+
+  { MaybeObject* maybe_obj = AllocateMap(INT32x4_TYPE, Int32x4::kSize);
+    if (!maybe_obj->ToObject(&obj)) return false;
+  }
+  set_int32x4_map(Map::cast(obj));
+
   { MaybeObject* maybe_obj = AllocateMap(SYMBOL_TYPE, Symbol::kSize);
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_symbol_map(Map::cast(obj));
 
   { MaybeObject* maybe_obj = AllocateMap(FOREIGN_TYPE, Foreign::kSize);
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_foreign_map(Map::cast(obj));
 
@@ skipping 88 matching lines @@
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_external_unsigned_int_array_map(Map::cast(obj));
 
   { MaybeObject* maybe_obj = AllocateMap(EXTERNAL_FLOAT_ARRAY_TYPE,
                                          ExternalArray::kAlignedSize);
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_external_float_array_map(Map::cast(obj));
 
+  { MaybeObject* maybe_obj = AllocateMap(EXTERNAL_FLOAT32x4_ARRAY_TYPE,
+                                         ExternalArray::kAlignedSize);
+    if (!maybe_obj->ToObject(&obj)) return false;
+  }
+  set_external_float32x4_array_map(Map::cast(obj));
+
+  { MaybeObject* maybe_obj = AllocateMap(EXTERNAL_INT32x4_ARRAY_TYPE,
+                                         ExternalArray::kAlignedSize);
+    if (!maybe_obj->ToObject(&obj)) return false;
+  }
+  set_external_int32x4_array_map(Map::cast(obj));
+
   { MaybeObject* maybe_obj =
         AllocateMap(FIXED_ARRAY_TYPE, kVariableSizeSentinel);
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_non_strict_arguments_elements_map(Map::cast(obj));
 
   { MaybeObject* maybe_obj = AllocateMap(EXTERNAL_DOUBLE_ARRAY_TYPE,
                                          ExternalArray::kAlignedSize);
     if (!maybe_obj->ToObject(&obj)) return false;
   }
@@ skipping 30 matching lines @@
         AllocateEmptyExternalArray(kExternalUnsignedIntArray);
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_empty_external_unsigned_int_array(ExternalArray::cast(obj));
 
   { MaybeObject* maybe_obj = AllocateEmptyExternalArray(kExternalFloatArray);
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_empty_external_float_array(ExternalArray::cast(obj));
 
+  { MaybeObject* maybe_obj =
+        AllocateEmptyExternalArray(kExternalFloat32x4Array);
+    if (!maybe_obj->ToObject(&obj)) return false;
+  }
+  set_empty_external_float32x4_array(ExternalArray::cast(obj));
+
+  { MaybeObject* maybe_obj =
+        AllocateEmptyExternalArray(kExternalInt32x4Array);
+    if (!maybe_obj->ToObject(&obj)) return false;
+  }
+  set_empty_external_int32x4_array(ExternalArray::cast(obj));
+
   { MaybeObject* maybe_obj = AllocateEmptyExternalArray(kExternalDoubleArray);
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_empty_external_double_array(ExternalArray::cast(obj));
 
   { MaybeObject* maybe_obj = AllocateEmptyExternalArray(kExternalPixelArray);
     if (!maybe_obj->ToObject(&obj)) return false;
   }
   set_empty_external_pixel_array(ExternalArray::cast(obj));
 
@@ skipping 118 matching lines @@
   { MaybeObject* maybe_result = AllocateRaw(size, space, OLD_DATA_SPACE);
     if (!maybe_result->ToObject(&result)) return maybe_result;
   }
 
   HeapObject::cast(result)->set_map_no_write_barrier(heap_number_map());
   HeapNumber::cast(result)->set_value(value);
   return result;
 }
 
 
+MaybeObject* Heap::AllocateFloat32x4(float32x4_value_t value,
+                                     PretenureFlag pretenure) {
+  // Statically ensure that it is safe to allocate float32x4 objects in paged
+  // spaces.
+  int size = Float32x4::kSize;
+  STATIC_ASSERT(Float32x4::kSize <= Page::kNonCodeObjectAreaSize);
+  AllocationSpace space = (pretenure == TENURED) ? OLD_DATA_SPACE : NEW_SPACE;
+
+  Object* result;
+  { MaybeObject* maybe_result = AllocateRaw(size, space, OLD_DATA_SPACE);
+    if (!maybe_result->ToObject(&result)) return maybe_result;
+  }
+
+  HeapObject::cast(result)->set_map_no_write_barrier(float32x4_map());
+  Float32x4::cast(result)->set_value(value);
+  return result;
+}
+
+
+MaybeObject* Heap::AllocateInt32x4(int32x4_value_t value,
+                                    PretenureFlag pretenure) {
+  // Statically ensure that it is safe to allocate int32x4 objects in paged
+  // spaces.
+  int size = Int32x4::kSize;
+  STATIC_ASSERT(Int32x4::kSize <= Page::kNonCodeObjectAreaSize);
+  AllocationSpace space = (pretenure == TENURED) ? OLD_DATA_SPACE : NEW_SPACE;
+
+  Object* result;
+  { MaybeObject* maybe_result = AllocateRaw(size, space, OLD_DATA_SPACE);
+    if (!maybe_result->ToObject(&result)) return maybe_result;
+  }
+
+  HeapObject::cast(result)->set_map_no_write_barrier(int32x4_map());
+  Int32x4::cast(result)->set_value(value);
+  return result;
+}
+
+
 MaybeObject* Heap::AllocateCell(Object* value) {
   int size = Cell::kSize;
   STATIC_ASSERT(Cell::kSize <= Page::kNonCodeObjectAreaSize);
 
   Object* result;
   { MaybeObject* maybe_result = AllocateRaw(size, CELL_SPACE, CELL_SPACE);
     if (!maybe_result->ToObject(&result)) return maybe_result;
   }
   HeapObject::cast(result)->set_map_no_write_barrier(cell_map());
   Cell::cast(result)->set_value(value);
@@ skipping 649 matching lines @@
     case kExternalShortArray:
       return kExternalShortArrayMapRootIndex;
     case kExternalUnsignedShortArray:
       return kExternalUnsignedShortArrayMapRootIndex;
     case kExternalIntArray:
       return kExternalIntArrayMapRootIndex;
     case kExternalUnsignedIntArray:
       return kExternalUnsignedIntArrayMapRootIndex;
     case kExternalFloatArray:
       return kExternalFloatArrayMapRootIndex;
+    case kExternalFloat32x4Array:
+      return kExternalFloat32x4ArrayMapRootIndex;
+    case kExternalInt32x4Array:
+      return kExternalInt32x4ArrayMapRootIndex;
     case kExternalDoubleArray:
       return kExternalDoubleArrayMapRootIndex;
     case kExternalPixelArray:
       return kExternalPixelArrayMapRootIndex;
     default:
       UNREACHABLE();
       return kUndefinedValueRootIndex;
   }
 }
 
 Heap::RootListIndex Heap::RootIndexForEmptyExternalArray(
     ElementsKind elementsKind) {
   switch (elementsKind) {
     case EXTERNAL_BYTE_ELEMENTS:
       return kEmptyExternalByteArrayRootIndex;
     case EXTERNAL_UNSIGNED_BYTE_ELEMENTS:
       return kEmptyExternalUnsignedByteArrayRootIndex;
     case EXTERNAL_SHORT_ELEMENTS:
       return kEmptyExternalShortArrayRootIndex;
     case EXTERNAL_UNSIGNED_SHORT_ELEMENTS:
       return kEmptyExternalUnsignedShortArrayRootIndex;
     case EXTERNAL_INT_ELEMENTS:
       return kEmptyExternalIntArrayRootIndex;
     case EXTERNAL_UNSIGNED_INT_ELEMENTS:
       return kEmptyExternalUnsignedIntArrayRootIndex;
     case EXTERNAL_FLOAT_ELEMENTS:
       return kEmptyExternalFloatArrayRootIndex;
+    case EXTERNAL_FLOAT32x4_ELEMENTS:
+      return kEmptyExternalFloat32x4ArrayRootIndex;
+    case EXTERNAL_INT32x4_ELEMENTS:
+      return kEmptyExternalInt32x4ArrayRootIndex;
     case EXTERNAL_DOUBLE_ELEMENTS:
       return kEmptyExternalDoubleArrayRootIndex;
     case EXTERNAL_PIXEL_ELEMENTS:
       return kEmptyExternalPixelArrayRootIndex;
     default:
       UNREACHABLE();
       return kUndefinedValueRootIndex;
   }
 }
 
@@ skipping 4268 matching lines @@
       static_cast<int>(object_sizes_last_time_[index]));
   CODE_AGE_LIST_COMPLETE(ADJUST_LAST_TIME_OBJECT_COUNT)
 #undef ADJUST_LAST_TIME_OBJECT_COUNT
 
   OS::MemCopy(object_counts_last_time_, object_counts_, sizeof(object_counts_));
   OS::MemCopy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_));
   ClearObjectStats();
 }
 
 } }  // namespace v8::internal