Pad the environment with 0 rather than the receiver to avoid influencing the representation of the …

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 824a3cd9dbf850cfa6e25ec255b81d9301d6d573..50a10a491753831c3157ec7eb4b65b8f53830f57 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -6108,7 +6108,8 @@ void HOptimizedGraphBuilder::HandlePolymorphicCallNamed(
     // Because the deopt may be the only path in the polymorphic call, make sure
     // that the environment stack matches the depth on deopt that it otherwise
     // would have had after a successful call.
-    Drop(argument_count - (ast_context()->IsEffect() ? 0 : 1));
+    Drop(argument_count);
+    if (!ast_context()->IsEffect()) Push(graph()->GetConstant0());
     FinishExitWithHardDeoptimization("Unknown map in polymorphic call", join);
   } else {
     HValue* context = environment()->context();