[turbofan] Add support for accessor inlining.

src/compiler.h

 // Copyright 2012 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.
 
 #ifndef V8_COMPILER_H_
 #define V8_COMPILER_H_
 
 #include <memory>
 
 #include "src/allocation.h"
@@ skipping 144 matching lines @@
     kFrameSpecializing = 1 << 9,
     kNativeContextSpecializing = 1 << 10,
     kInliningEnabled = 1 << 11,
     kDisableFutureOptimization = 1 << 12,
     kSplittingEnabled = 1 << 13,
     kDeoptimizationEnabled = 1 << 14,
     kSourcePositionsEnabled = 1 << 15,
     kBailoutOnUninitialized = 1 << 16,
     kOptimizeFromBytecode = 1 << 17,
     kTypeFeedbackEnabled = 1 << 18,
+    kAccessorInliningEnabled = 1 << 19,
   };
 
   CompilationInfo(ParseInfo* parse_info, Handle<JSFunction> closure);
   CompilationInfo(Vector<const char> debug_name, Isolate* isolate, Zone* zone,
                   Code::Flags code_flags = Code::ComputeFlags(Code::STUB));
   ~CompilationInfo();
 
   ParseInfo* parse_info() const { return parse_info_; }
 
   // -----------------------------------------------------------
@@ skipping 96 matching lines @@
   bool is_deoptimization_enabled() const {
     return GetFlag(kDeoptimizationEnabled);
   }
 
   void MarkAsTypeFeedbackEnabled() { SetFlag(kTypeFeedbackEnabled); }
 
   bool is_type_feedback_enabled() const {
     return GetFlag(kTypeFeedbackEnabled);
   }
 
+  void MarkAsAccessorInliningEnabled() { SetFlag(kAccessorInliningEnabled); }
+
+  bool is_accessor_inlining_enabled() const {
+    return GetFlag(kAccessorInliningEnabled);
+  }
+
   void MarkAsSourcePositionsEnabled() { SetFlag(kSourcePositionsEnabled); }
 
   bool is_source_positions_enabled() const {
     return GetFlag(kSourcePositionsEnabled);
   }
 
   void MarkAsInliningEnabled() { SetFlag(kInliningEnabled); }
 
   bool is_inlining_enabled() const { return GetFlag(kInliningEnabled); }
 
@@ skipping 295 matching lines @@
   MUST_USE_RESULT Status SetLastStatus(Status status) {
     last_status_ = status;
     return last_status_;
   }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_H_