Internalize strings in-place

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/compiler/type-cache.h"
 #include "src/contexts.h"
 #include "src/frames.h"
 #include "src/handles-inl.h"
@@ skipping 482 matching lines @@
 
 // static
 FieldAccess AccessBuilder::ForConsStringSecond() {
   FieldAccess access = {
       kTaggedBase,    ConsString::kSecondOffset,    Handle<Name>(),
       Type::String(), MachineType::TaggedPointer(), kPointerWriteBarrier};
   return access;
 }
 
 // static
+FieldAccess AccessBuilder::ForThinStringActual() {
+  FieldAccess access = {
+      kTaggedBase,    ThinString::kActualOffset,    Handle<Name>(),
+      Type::String(), MachineType::TaggedPointer(), kPointerWriteBarrier};
+  return access;
+}
+
+// static
 FieldAccess AccessBuilder::ForSlicedStringOffset() {
   FieldAccess access = {
       kTaggedBase,         SlicedString::kOffsetOffset, Handle<Name>(),
       Type::SignedSmall(), MachineType::TaggedSigned(), kNoWriteBarrier};
   return access;
 }
 
 // static
 FieldAccess AccessBuilder::ForSlicedStringParent() {
   FieldAccess access = {
@@ skipping 322 matching lines @@
   }
   UNREACHABLE();
   ElementAccess access = {kUntaggedBase, 0, Type::None(), MachineType::None(),
                           kNoWriteBarrier};
   return access;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8