[simd] Introduce SIMD types (as classes)

src/types-inl.h

Index: src/types-inl.h
diff --git a/src/types-inl.h b/src/types-inl.h
index 084f5db812d79e5431a7bf0877d1417151e4fef2..699d642d590296158597f7e6c97ca470a901585c 100644
--- a/src/types-inl.h
+++ b/src/types-inl.h
@@ -16,19 +16,29 @@ namespace internal {
 // -----------------------------------------------------------------------------
 // TypeImpl
 
-template <class Config>
+template<class Config>
 typename TypeImpl<Config>::bitset TypeImpl<Config>::BitsetType::SignedSmall() {
   return i::SmiValuesAre31Bits() ? kSigned31 : kSigned32;
 }
 
 
-template <class Config>
+template<class Config>
 typename TypeImpl<Config>::bitset
 TypeImpl<Config>::BitsetType::UnsignedSmall() {
   return i::SmiValuesAre31Bits() ? kUnsigned30 : kUnsigned31;
 }
 
 
+#define CONSTRUCT_SIMD_TYPE(NAME, Name, name, lane_count, lane_type) \
+template<class Config> \
+typename TypeImpl<Config>::TypeHandle TypeImpl<Config>::Name( \
+    Isolate* isolate, Region* region) { \
+  return Class(i::handle(isolate->heap()->name##_map()), region); \
+}
+SIMD128_TYPES(CONSTRUCT_SIMD_TYPE)
+#undef CONSTRUCT_SIMD_TYPE
+
+
 template<class Config>
 TypeImpl<Config>* TypeImpl<Config>::cast(typename Config::Base* object) {
   TypeImpl* t = static_cast<TypeImpl*>(object);