GH-111485: Separate out parsing, analysis and code-gen phases of tier 1 code generator (GH-112299)

Python/abstract_interp_cases.c.h

@@ -774,7 +774,8 @@
         }
 
         case _PUSH_FRAME: {
-            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(-1)), true);
+            STACK_SHRINK(1);
+            PARTITIONNODE_OVERWRITE((_Py_PARTITIONNODE_t *)PARTITIONNODE_NULLROOT, PEEK(-(0)), true);
             break;
         }
 

Python/bytecodes.c

@@ -800,11 +800,11 @@ dummy_func(
         // We also push it onto the stack on exit, but that's a
         // different frame, and it's accounted for by _PUSH_FRAME.
         op(_POP_FRAME, (retval --)) {
-            assert(EMPTY());
             #if TIER_ONE
             assert(frame != &entry_frame);
             #endif
             STORE_SP();
+            assert(EMPTY());
             _Py_LeaveRecursiveCallPy(tstate);
             // GH-99729: We need to unlink the frame *before* clearing it:
             _PyInterpreterFrame *dying = frame;
@@ -1165,7 +1165,6 @@ dummy_func(
             }
         }
 
-
         inst(STORE_NAME, (v -- )) {
             PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
             PyObject *ns = LOCALS();
@@ -3130,7 +3129,7 @@ dummy_func(
         // The 'unused' output effect represents the return value
         // (which will be pushed when the frame returns).
         // It is needed so CALL_PY_EXACT_ARGS matches its family.
-        op(_PUSH_FRAME, (new_frame: _PyInterpreterFrame* -- unused)) {
+        op(_PUSH_FRAME, (new_frame: _PyInterpreterFrame* -- unused if (0))) {
             // Write it out explicitly because it's subtly different.
             // Eventually this should be the only occurrence of this code.
             assert(tstate->interp->eval_frame == NULL);

Python/executor_cases.c.h

@@ -661,11 +661,11 @@
             PyObject *retval;
             retval = stack_pointer[-1];
             STACK_SHRINK(1);
-            assert(EMPTY());
             #if TIER_ONE
             assert(frame != &entry_frame);
             #endif
             STORE_SP();
+            assert(EMPTY());
             _Py_LeaveRecursiveCallPy(tstate);
             // GH-99729: We need to unlink the frame *before* clearing it:
             _PyInterpreterFrame *dying = frame;