Revert of Remove SIMD.js from V8.

src/ast/ast-types.cc

 // Copyright 2014 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 "src/ast/ast-types.h"
 
 #include "src/handles-inl.h"
 #include "src/objects-inl.h"
@@ skipping 177 matching lines @@
       DCHECK(map == heap->uninitialized_map() ||
              map == heap->no_interceptor_result_sentinel_map() ||
              map == heap->termination_exception_map() ||
              map == heap->arguments_marker_map() ||
              map == heap->optimized_out_map() ||
              map == heap->stale_register_map());
       return kOtherInternal & kTaggedPointer;
     }
     case HEAP_NUMBER_TYPE:
       return kNumber & kTaggedPointer;
+    case SIMD128_VALUE_TYPE:
+      return kSimd;
     case JS_OBJECT_TYPE:
     case JS_ARGUMENTS_TYPE:
     case JS_ERROR_TYPE:
     case JS_GLOBAL_OBJECT_TYPE:
     case JS_GLOBAL_PROXY_TYPE:
     case JS_API_OBJECT_TYPE:
     case JS_SPECIAL_API_OBJECT_TYPE:
       if (map->is_undetectable()) return kOtherUndetectable;
       return kOtherObject;
     case JS_VALUE_TYPE:
@@ skipping 1081 matching lines @@
 #endif
 
 AstBitsetType::bitset AstBitsetType::SignedSmall() {
   return i::SmiValuesAre31Bits() ? kSigned31 : kSigned32;
 }
 
 AstBitsetType::bitset AstBitsetType::UnsignedSmall() {
   return i::SmiValuesAre31Bits() ? kUnsigned30 : kUnsigned31;
 }
 
+#define CONSTRUCT_SIMD_TYPE(NAME, Name, name, lane_count, lane_type) \
+  AstType* AstType::Name(Isolate* isolate, Zone* zone) {             \
+    return Class(i::handle(isolate->heap()->name##_map()), zone);    \
+  }
+SIMD128_TYPES(CONSTRUCT_SIMD_TYPE)
+#undef CONSTRUCT_SIMD_TYPE
+
 // -----------------------------------------------------------------------------
 // Instantiations.
 
 template class AstType::Iterator<i::Map>;
 template class AstType::Iterator<i::Object>;
 
 }  // namespace internal
 }  // namespace v8