Fix deopt in store with effect context.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index ddd47c10b60b63476d14922b3bc8ccb40b7945e1..6a28ff0cf3d4fb6d6de74b9f7500b816dc4aeb17 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -4829,11 +4829,12 @@ bool HOptimizedGraphBuilder::TryStorePolymorphicAsMonomorphic(
       store = BuildStoreNamedField(
           object, name, store_value, types->at(count - 1), &lookup),
       true);
-  Push(result_value);
+  if (!ast_context()->IsEffect()) Push(result_value);
   store->set_position(position);
   AddInstruction(store);
   AddSimulate(assignment_id);
-  ast_context()->ReturnValue(Pop());
+  if (!ast_context()->IsEffect()) Drop(1);
+  ast_context()->ReturnValue(result_value);
   return true;
 }
 
@@ -5059,13 +5060,14 @@ void HOptimizedGraphBuilder::BuildStoreNamed(Expression* expr,
     instr = BuildStoreNamedGeneric(object, name, store_value);
   }
 
-  Push(result_value);
+  if (!ast_context()->IsEffect()) Push(result_value);
   instr->set_position(position);
   AddInstruction(instr);
   if (instr->HasObservableSideEffects()) {
     AddSimulate(id, REMOVABLE_SIMULATE);
   }
-  return ast_context()->ReturnValue(Pop());
+  if (!ast_context()->IsEffect()) Drop(1);
+  return ast_context()->ReturnValue(result_value);
 }