[turbofan] Support variable size argument popping in TF-generated functions

test/cctest/compiler/test-representation-change.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 <limits>
 
 #include "test/cctest/cctest.h"
 #include "test/cctest/compiler/codegen-tester.h"
 #include "test/cctest/compiler/graph-builder-tester.h"
 #include "test/cctest/compiler/value-helper.h"
@@ skipping 66 matching lines @@
     CHECK_DOUBLE_EQ(expected, m.Value());
   }
 
   Node* Parameter(int index = 0) {
     Node* n = graph()->NewNode(common()->Parameter(index), graph()->start());
     NodeProperties::SetType(n, Type::Any());
     return n;
   }
 
   Node* Return(Node* input) {
-    Node* n = graph()->NewNode(common()->Return(), input, graph()->start(),
-                               graph()->start());
+    Node* n = graph()->NewNode(common()->Return(), jsgraph()->Int32Constant(0),
+                               input, graph()->start(), graph()->start());
     return n;
   }
 
   void CheckTypeError(MachineRepresentation from, Type* from_type,
                       MachineRepresentation to) {
     changer()->testing_type_errors_ = true;
     changer()->type_error_ = false;
     Node* n = Parameter(0);
     Node* use = Return(n);
     Node* c = changer()->GetRepresentationFor(n, from, from_type, use,
@@ skipping 432 matching lines @@
                    MachineRepresentation::kWord64);
   r.CheckTypeError(MachineRepresentation::kWord32, Type::Signed32(),
                    MachineRepresentation::kWord64);
   r.CheckTypeError(MachineRepresentation::kWord32, Type::Unsigned32(),
                    MachineRepresentation::kWord64);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8