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

test/cctest/compiler/test-run-native-calls.cc

Index: test/cctest/compiler/test-run-native-calls.cc
diff --git a/test/cctest/compiler/test-run-native-calls.cc b/test/cctest/compiler/test-run-native-calls.cc
index 7885ba40148b661b6ceedda7d5fa4a029d186b13..89629ec09016384d543e0ba6c52a7ef6cddcb84a 100644
--- a/test/cctest/compiler/test-run-native-calls.cc
+++ b/test/cctest/compiler/test-run-native-calls.cc
@@ -293,7 +293,9 @@ Handle<Code> WrapWithCFunction(Handle<Code> inner, CallDescriptor* desc) {
     // Build the call and return nodes.
     Node* call =
         b.graph()->NewNode(b.common()->Call(desc), param_count + 3, args);
-    Node* ret = b.graph()->NewNode(b.common()->Return(), call, call, start);
+    Node* zero = b.graph()->NewNode(b.common()->Int32Constant(0));
+    Node* ret =
+        b.graph()->NewNode(b.common()->Return(), zero, call, call, start);
     b.graph()->SetEnd(ret);
   }
 
@@ -531,7 +533,9 @@ static void TestInt32Sub(CallDescriptor* desc) {
     Node* p0 = b.graph()->NewNode(b.common()->Parameter(0), start);
     Node* p1 = b.graph()->NewNode(b.common()->Parameter(1), start);
     Node* add = b.graph()->NewNode(b.machine()->Int32Sub(), p0, p1);
-    Node* ret = b.graph()->NewNode(b.common()->Return(), add, start, start);
+    Node* zero = b.graph()->NewNode(b.common()->Int32Constant(0));
+    Node* ret =
+        b.graph()->NewNode(b.common()->Return(), zero, add, start, start);
     b.graph()->SetEnd(ret);
   }