[Interpreter] Remove InterpreterExitTrampoline and replace with returning to the entry trampoline.

src/heap/heap-inl.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_HEAP_HEAP_INL_H_
 #define V8_HEAP_HEAP_INL_H_
 
 #include <cmath>
 
 #include "src/base/platform/platform.h"
@@ skipping 667 matching lines @@
   int last_id = last_script_id()->value();
   if (last_id == Smi::kMaxValue) {
     last_id = 1;
   } else {
     last_id++;
   }
   set_last_script_id(Smi::FromInt(last_id));
   return last_id;
 }
 
-
 void Heap::SetArgumentsAdaptorDeoptPCOffset(int pc_offset) {
   DCHECK(arguments_adaptor_deopt_pc_offset() == Smi::FromInt(0));
   set_arguments_adaptor_deopt_pc_offset(Smi::FromInt(pc_offset));
 }
 
-
 void Heap::SetConstructStubDeoptPCOffset(int pc_offset) {
   DCHECK(construct_stub_deopt_pc_offset() == Smi::FromInt(0));
   set_construct_stub_deopt_pc_offset(Smi::FromInt(pc_offset));
 }
 
-
 void Heap::SetGetterStubDeoptPCOffset(int pc_offset) {
   DCHECK(getter_stub_deopt_pc_offset() == Smi::FromInt(0));
   set_getter_stub_deopt_pc_offset(Smi::FromInt(pc_offset));
 }
 
-
 void Heap::SetSetterStubDeoptPCOffset(int pc_offset) {
   DCHECK(setter_stub_deopt_pc_offset() == Smi::FromInt(0));
   set_setter_stub_deopt_pc_offset(Smi::FromInt(pc_offset));
 }
 
+void Heap::SetInterpreterEntryReturnPCOffset(int pc_offset) {
+  DCHECK(interpreter_entry_return_pc_offset() == Smi::FromInt(0));
+  set_interpreter_entry_return_pc_offset(Smi::FromInt(pc_offset));
+}
 
 AlwaysAllocateScope::AlwaysAllocateScope(Isolate* isolate)
     : heap_(isolate->heap()) {
   heap_->always_allocate_scope_count_.Increment(1);
 }
 
 
 AlwaysAllocateScope::~AlwaysAllocateScope() {
   heap_->always_allocate_scope_count_.Increment(-1);
 }
@@ skipping 12 matching lines @@
 
 void VerifySmisVisitor::VisitPointers(Object** start, Object** end) {
   for (Object** current = start; current < end; current++) {
     CHECK((*current)->IsSmi());
   }
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_HEAP_INL_H_