Fix _CHECK_PERIODIC insertion

Author: Fidget-Spinner

Python/bytecodes.c

@@ -2981,8 +2981,10 @@ dummy_func(
                     _PyJIT_InitializeTracing(tstate, frame, this_instr, STACK_LEVEL(), 0, NULL);
                     ENTER_TRACING();
                 }
-                // Don't add the JUMP_BACKWARD_JIT instruction to the trace.
-                DISPATCH();
+                int _jump_taken = false;
+                PyCodeObject *old_code = _PyFrame_GetCode(frame);
+                PyFunctionObject *old_func = (PyFunctionObject *)PyStackRef_AsPyObjectBorrow(frame->f_funcobj);
+                TRACING_DISPATCH();
             }
             else {
                 ADVANCE_ADAPTIVE_COUNTER(this_instr[1].counter);

Python/generated_cases.c.h

@@ -673,7 +673,6 @@ _PyJIT_translate_single_bytecode_to_trace(
 
     // Loop back to the start
     if (is_first_instr && tstate->interp->jit_state.jit_tracer_code_curr_size > 2) {
-        ADD_TO_TRACE(_CHECK_PERIODIC, 0, 0, target);
         ADD_TO_TRACE(_JUMP_TO_TOP, 0, 0, 0);
         goto done;
     }
@@ -705,19 +704,7 @@ _PyJIT_translate_single_bytecode_to_trace(
             break;
         }
         case JUMP_BACKWARD_JIT:
-            // This is possible as the JIT might have re-activated after it was disabled.                // if (next_uop->opcode != _START_EXECUTOR) {
-            //     if (next_uop->format == UOP_FORMAT_TARGET) {
-            //         _Py_CODEUNIT *aim = _PyFrame_GetBytecode(frame) + next_uop->target;
-            //         printf("    aim=[%s]\n", _PyOpcode_OpName[aim->op.code]);
-            //     }
-            //     else if (next_uop->format == UOP_FORMAT_JUMP) {
-            //         _PyUOpInstruction *aim_uop =  current_executor->trace + next_uop->jump_target;
-            //         if (aim_uop->format == UOP_FORMAT_TARGET) {
-            //             _Py_CODEUNIT *aim = _PyFrame_GetBytecode(frame) + aim_uop->target;
-            //             printf("    aim=[%s]\n", _PyOpcode_OpName[aim->op.code]);
-            //         }
-            //     }
-            // }
+            // This is possible as the JIT might have re-activated after it was disabled
         case JUMP_BACKWARD_NO_JIT:
         case JUMP_BACKWARD:
             ADD_TO_TRACE(_CHECK_PERIODIC, 0, 0, target);