[turbofan] Decouple inlining and native context specialization.

src/compiler/access-builder.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 "src/compiler/access-builder.h"
 
 #include "src/contexts.h"
 #include "src/frames.h"
 #include "src/heap/heap.h"
 #include "src/type-cache.h"
@@ skipping 56 matching lines @@
 
 // static
 FieldAccess AccessBuilder::ForJSFunctionSharedFunctionInfo() {
   FieldAccess access = {kTaggedBase, JSFunction::kSharedFunctionInfoOffset,
                         Handle<Name>(), Type::Any(), kMachAnyTagged};
   return access;
 }
 
 
 // static
+FieldAccess AccessBuilder::ForJSArrayLength(ElementsKind elements_kind) {
+  TypeCache const& type_cache = TypeCache::Get();
+  FieldAccess access = {kTaggedBase, JSArray::kLengthOffset, Handle<Name>(),
+                        type_cache.kJSArrayLengthType, kMachAnyTagged};
+  if (IsFastDoubleElementsKind(elements_kind)) {
+    access.type = type_cache.kFixedDoubleArrayLengthType;
+  } else if (IsFastElementsKind(elements_kind)) {
+    access.type = type_cache.kFixedArrayLengthType;
+  }
+  return access;
+}
+
+
+// static
 FieldAccess AccessBuilder::ForJSArrayBufferBackingStore() {
   FieldAccess access = {kTaggedBase, JSArrayBuffer::kBackingStoreOffset,
                         MaybeHandle<Name>(), Type::UntaggedPointer(), kMachPtr};
   return access;
 }
 
 
 // static
 FieldAccess AccessBuilder::ForJSArrayBufferBitField() {
   FieldAccess access = {kTaggedBase, JSArrayBuffer::kBitFieldOffset,
@@ skipping 253 matching lines @@
 // static
 FieldAccess AccessBuilder::ForFrameMarker() {
   FieldAccess access = {kUntaggedBase, StandardFrameConstants::kMarkerOffset,
                         MaybeHandle<Name>(), Type::Tagged(), kMachAnyTagged};
   return access;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8