[turbofan] Introduce initial support for TypedArrays.

src/compiler/access-info.cc

 // Copyright 2015 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 <ostream>
 
 #include "src/accessors.h"
 #include "src/compilation-dependencies.h"
 #include "src/compiler/access-info.h"
 #include "src/field-index-inl.h"
 #include "src/field-type.h"
 #include "src/objects-inl.h"
 #include "src/type-cache.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 namespace {
 
 bool CanInlineElementAccess(Handle<Map> map) {
   if (!map->IsJSObjectMap()) return false;
   if (map->is_access_check_needed()) return false;
   if (map->has_indexed_interceptor()) return false;
   ElementsKind const elements_kind = map->elements_kind();
   if (IsFastElementsKind(elements_kind)) return true;
   // TODO(bmeurer): Add support for other elements kind.
+  if (elements_kind == UINT8_CLAMPED_ELEMENTS) return false;
+  if (IsFixedTypedArrayElementsKind(elements_kind)) return true;
   return false;
 }
 
 
 bool CanInlinePropertyAccess(Handle<Map> map) {
   // We can inline property access to prototypes of all primitives, except
   // the special Oddball ones that have no wrapper counterparts (i.e. Null,
   // Undefined and TheHole).
   STATIC_ASSERT(ODDBALL_TYPE == LAST_PRIMITIVE_TYPE);
   if (map->IsBooleanMap()) return true;
@@ skipping 483 matching lines @@
   }
   return false;
 }
 
 
 Factory* AccessInfoFactory::factory() const { return isolate()->factory(); }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8