python · brijkapadia · Mar 19, 2026 · Mar 19, 2026 · Mar 19, 2026 · Mar 20, 2026
diff --git a/Include/internal/pycore_opcode_metadata.h b/Include/internal/pycore_opcode_metadata.h
diff --git a/Include/internal/pycore_uop_ids.h b/Include/internal/pycore_uop_ids.h
diff --git a/Include/internal/pycore_uop_metadata.h b/Include/internal/pycore_uop_metadata.h
diff --git a/Lib/test/test_capi/test_opt.py b/Lib/test/test_capi/test_opt.py
@@ -6079,6 +6079,21 @@ def g():
         PYTHON_JIT="1", PYTHON_JIT_STRESS="1")
         self.assertEqual(result[0].rc, 0, result)
 
+    def test_pop_iter(self):
+        def testfunc(n):
+            for _ in range(n):
+                for _ in range(5):
+                    pass
+
+        self._run_with_optimizer(testfunc, TIER2_THRESHOLD*2)
+        all_ex = get_all_executors(testfunc)
+
+        self.assertEqual(len(all_ex), 3)
+        pop_iter_ex = all_ex[1]
+
+        self.assertEqual(count_ops(pop_iter_ex, "_POP_TOP"), 1)
+        self.assertEqual(count_ops(pop_iter_ex, "_POP_TOP_NOP"), 1)
+
     def test_call_kw(self):
         def func(a):
             return int(a) * 42

diff --git a/Modules/_testinternalcapi/test_cases.c.h b/Modules/_testinternalcapi/test_cases.c.h
@@ -400,12 +400,7 @@ dummy_func(
             PyStackRef_CLOSE(value);
         }
 
-
-        inst(POP_ITER, (iter, index_or_null -- )) {
-            (void)index_or_null;
-            DEAD(index_or_null);
-            PyStackRef_CLOSE(iter);
-        }
+        macro(POP_ITER) = _POP_TOP_NOP + POP_TOP;
 
         no_save_ip tier1 inst(INSTRUMENTED_END_FOR, (receiver, index_or_null, value -- receiver, index_or_null)) {
             /* Need to create a fake StopIteration error here,

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