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

test/unittests/interpreter/interpreter-assembler-unittest.cc

 // 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.
 
 #include "test/unittests/interpreter/interpreter-assembler-unittest.h"
 
 #include "src/code-factory.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/node.h"
 #include "src/interface-descriptors.h"
@@ skipping 364 matching lines @@
               _, code_target_matcher,
               IsParameter(InterpreterDispatchDescriptor::kAccumulatorParameter),
               next_bytecode_offset_matcher, _,
               IsParameter(
                   InterpreterDispatchDescriptor::kDispatchTableParameter),
               _, _));
     }
   }
 }
 
+TARGET_TEST_F(InterpreterAssemblerTest, InterpreterReturn) {
+  // If debug code is enabled we emit extra code in InterpreterReturn.
+  if (FLAG_debug_code) return;
+
+  TRACED_FOREACH(interpreter::Bytecode, bytecode, kBytecodes) {
+    InterpreterAssemblerForTest m(this, bytecode);
+    Node* tail_call_node = m.InterpreterReturn();
+
+    Handle<HeapObject> exit_trampoline =
+        isolate()->builtins()->InterpreterExitTrampoline();
+    Matcher<Node*> exit_trampoline_entry_matcher =
+        IsIntPtrAdd(IsHeapConstant(exit_trampoline),
+                    IsIntPtrConstant(Code::kHeaderSize - kHeapObjectTag));
+    EXPECT_THAT(
+        tail_call_node,
+        IsTailCall(
+            _, exit_trampoline_entry_matcher,
+            IsParameter(InterpreterDispatchDescriptor::kAccumulatorParameter),
+            IsParameter(
+                InterpreterDispatchDescriptor::kBytecodeOffsetParameter),
+            _,
+            IsParameter(InterpreterDispatchDescriptor::kDispatchTableParameter),
+            _, _));
+  }
+}
+
 TARGET_TEST_F(InterpreterAssemblerTest, BytecodeOperand) {
   static const OperandScale kOperandScales[] = {
       OperandScale::kSingle, OperandScale::kDouble, OperandScale::kQuadruple};
   TRACED_FOREACH(interpreter::Bytecode, bytecode, kBytecodes) {
     TRACED_FOREACH(interpreter::OperandScale, operand_scale, kOperandScales) {
       InterpreterAssemblerForTest m(this, bytecode, operand_scale);
       int number_of_operands =
           interpreter::Bytecodes::NumberOfOperands(bytecode);
       for (int i = 0; i < number_of_operands; i++) {
         int offset = interpreter::Bytecodes::GetOperandOffset(bytecode, i,
@@ skipping 306 matching lines @@
         feedback_vector,
         m.IsLoad(MachineType::AnyTagged(), load_shared_function_info_matcher,
                  IsIntPtrConstant(SharedFunctionInfo::kFeedbackVectorOffset -
                                   kHeapObjectTag)));
   }
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8