eliminate refcount from _CALL_TUPLE_1

python · Fidget-Spinner · Dec 11, 2025 · Jun 23, 2025 · Jun 23, 2025 · Jun 23, 2025
commit af1172a0c8a3199e0856ef37ba0b4c68d8658733
diff --git a/Include/internal/pycore_opcode_metadata.h b/Include/internal/pycore_opcode_metadata.h
@@ -4083,17 +4083,14 @@ dummy_func(
             DEOPT_IF(callable_o != (PyObject *)&PyTuple_Type);
         }
 
-        op(_CALL_TUPLE_1, (callable, null, arg -- res)) {
+        op(_CALL_TUPLE_1, (callable, null, arg -- res, a)) {
             PyObject *arg_o = PyStackRef_AsPyObjectBorrow(arg);
 
             assert(oparg == 1);
             STAT_INC(CALL, hit);
+            INPUTS_DEAD();
             PyObject *res_o = PySequence_Tuple(arg_o);
-            DEAD(null);
-            DEAD(callable);
-            (void)callable; // Silence compiler warnings about unused variables
-            (void)null;
-            PyStackRef_CLOSE(arg);
+            a = arg;
             ERROR_IF(res_o == NULL);
             res = PyStackRef_FromPyObjectSteal(res_o);
         }
@@ -4104,6 +4101,7 @@ dummy_func(
             _GUARD_NOS_NULL +
             _GUARD_CALLABLE_TUPLE_1 +
             _CALL_TUPLE_1 +
+            POP_TOP +
             _CHECK_PERIODIC;
 
         op(_CHECK_AND_ALLOCATE_OBJECT, (type_version/2, callable, self_or_null, unused[oparg] -- callable, self_or_null, unused[oparg])) {

diff --git a/Python/executor_cases.c.h b/Python/executor_cases.c.h
diff --git a/Python/generated_cases.c.h b/Python/generated_cases.c.h
@@ -1127,14 +1127,15 @@ dummy_func(void) {
         }
     }
 
-    op(_CALL_TUPLE_1, (callable, null, arg -- res)) {
+    op(_CALL_TUPLE_1, (callable, null, arg -- res, a)) {
         if (sym_matches_type(arg, &PyTuple_Type)) {
             // e.g. tuple((1, 2)) or tuple(foo) where foo is known to be a tuple
             res = arg;
         }
         else {
             res = sym_new_type(ctx, &PyTuple_Type);
         }
+        a = arg;
     }
 
     op(_GUARD_TOS_LIST, (tos -- tos)) {

diff --git a/Python/optimizer_cases.c.h b/Python/optimizer_cases.c.h