[turbofan] [deoptimizer] Support inlining of ES6 tail calls.

src/compiler/frame-states.h

 // 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.
 
 #ifndef V8_COMPILER_FRAME_STATES_H_
 #define V8_COMPILER_FRAME_STATES_H_
 
 #include "src/handles.h"
 #include "src/utils.h"
 
@@ skipping 61 matching lines @@
   Kind const kind_;
   size_t const parameter_;
 };
 
 
 // The type of stack frame that a FrameState node represents.
 enum class FrameStateType {
   kJavaScriptFunction,   // Represents an unoptimized JavaScriptFrame.
   kInterpretedFunction,  // Represents an InterpretedFrame.
   kArgumentsAdaptor,     // Represents an ArgumentsAdaptorFrame.
+  kTailCallerFunction,   // Represents a frame removed by tail call elimination.
   kConstructStub         // Represents a ConstructStubFrame.
 };
 
-
 class FrameStateFunctionInfo {
  public:
   FrameStateFunctionInfo(FrameStateType type, int parameter_count,
                          int local_count,
                          Handle<SharedFunctionInfo> shared_info)
       : type_(type),
         parameter_count_(parameter_count),
         local_count_(local_count),
         shared_info_(shared_info) {}
 
@@ skipping 60 matching lines @@
 static const int kFrameStateContextInput = 3;
 static const int kFrameStateFunctionInput = 4;
 static const int kFrameStateOuterStateInput = 5;
 static const int kFrameStateInputCount = kFrameStateOuterStateInput + 1;
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_FRAME_STATES_H_