GH-125515: Reduce number of compiler warnings in generated code (GH-125697)

Author: markshannon

Include/internal/pycore_opcode_metadata.h

@@ -974,7 +974,9 @@ dummy_func(
             tstate->current_frame = frame->previous;
             assert(!_PyErr_Occurred(tstate));
             tstate->c_recursion_remaining += PY_EVAL_C_STACK_UNITS;
-            return PyStackRef_AsPyObjectSteal(retval);
+            PyObject *result = PyStackRef_AsPyObjectSteal(retval);
+            SYNC_SP(); /* Not strictly necessary, but prevents warnings */
+            return result;
         }
 
         // The stack effect here is ambiguous.
@@ -1874,7 +1876,7 @@ dummy_func(
             ERROR_IF(err != 0, error);
         }
 
-        inst(INSTRUMENTED_LOAD_SUPER_ATTR, (unused/1, unused, unused, unused -- unused, unused if (oparg & 1))) {
+        inst(INSTRUMENTED_LOAD_SUPER_ATTR, (unused/1 -- )) {
             // cancel out the decrement that will happen in LOAD_SUPER_ATTR; we
             // don't want to specialize instrumented instructions
             PAUSE_ADAPTIVE_COUNTER(this_instr[1].counter);

Python/bytecodes.c

@@ -64,6 +64,7 @@ def declare_variables(uop: Uop, out: CWriter) -> None:
 
 
 class Tier2Emitter(Emitter):
+
     def __init__(self, out: CWriter):
         super().__init__(out)
         self._replacers["oparg"] = self.oparg