Apply Mark's suggestion

Author: Fidget-Spinner

Include/internal/pycore_code.h

@@ -323,7 +323,7 @@ PyAPI_FUNC(void) _Py_Specialize_ToBool(_PyStackRef value, _Py_CODEUNIT *instr);
 PyAPI_FUNC(void) _Py_Specialize_ContainsOp(_PyStackRef value, _Py_CODEUNIT *instr);
 PyAPI_FUNC(void) _Py_GatherStats_GetIter(_PyStackRef iterable);
 PyAPI_FUNC(void) _Py_Specialize_CallFunctionEx(_PyStackRef func_st, _Py_CODEUNIT *instr);
-PyAPI_FUNC(void) _Py_Specialize_Resume(_Py_CODEUNIT *instr, PyThreadState *tstate);
+PyAPI_FUNC(void) _Py_Specialize_Resume(_Py_CODEUNIT *instr, PyThreadState *tstate, _PyInterpreterFrame *frame);
 
 // Utility functions for reading/writing 32/64-bit values in the inline caches.
 // Great care should be taken to ensure that these functions remain correct and

Modules/_testinternalcapi/test_cases.c.h

@@ -173,7 +173,7 @@ dummy_func(
         }
 
         tier1 op(_QUICKEN_RESUME, (counter/1 --)) {
-            _Py_Specialize_Resume(this_instr, tstate);
+            _Py_Specialize_Resume(this_instr, tstate, frame);
         }
 
         tier1 op(_MAYBE_INSTRUMENT, (--)) {

Python/bytecodes.c

@@ -2788,13 +2788,18 @@ _Py_Specialize_ContainsOp(_PyStackRef value_st, _Py_CODEUNIT *instr)
 
 
 void
-_Py_Specialize_Resume(_Py_CODEUNIT *instr, PyThreadState *tstate)
+_Py_Specialize_Resume(_Py_CODEUNIT *instr, PyThreadState *tstate, _PyInterpreterFrame *frame)
 {
     if (tstate->tracing == 0 && instr->op.code == RESUME) {
         if (tstate->interp->jit) {
-            specialize(instr, RESUME_CHECK_JIT);
-            set_counter((_Py_BackoffCounter *)instr + 1, initial_resume_backoff_counter(&tstate->interp->opt_config));
-            return;
+            PyCodeObject *co = (PyCodeObject *)PyStackRef_AsPyObjectBorrow(frame->f_executable);
+            if (co != NULL &&
+                PyCode_Check(co) &&
+                (co->co_flags & (CO_GENERATOR | CO_COROUTINE | CO_ASYNC_GENERATOR)) == 0) {
+                specialize(instr, RESUME_CHECK_JIT);
+                set_counter((_Py_BackoffCounter *)instr + 1, initial_resume_backoff_counter(&tstate->interp->opt_config));
+                return;
+            }
         }
         specialize(instr, RESUME_CHECK);
         return;