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

test/unittests/compiler/loop-peeling-unittest.cc

Index: test/unittests/compiler/loop-peeling-unittest.cc
diff --git a/test/unittests/compiler/loop-peeling-unittest.cc b/test/unittests/compiler/loop-peeling-unittest.cc
index de784c6d0bd15030bca508505a719bcb2e39e05d..969f253ae1a513b68d996d1645be1658bcc4392d 100644
--- a/test/unittests/compiler/loop-peeling-unittest.cc
+++ b/test/unittests/compiler/loop-peeling-unittest.cc
@@ -90,7 +90,8 @@ class LoopPeelingTest : public GraphTest {
   }
 
   Node* InsertReturn(Node* val, Node* effect, Node* control) {
-    Node* r = graph()->NewNode(common()->Return(), val, effect, control);
+    Node* zero = graph()->NewNode(common()->Int32Constant(0));
+    Node* r = graph()->NewNode(common()->Return(), zero, val, effect, control);
     graph()->SetEnd(r);
     return r;
   }