From 54f74b80aef8b581f2b124d150903cec83aff005 Mon Sep 17 00:00:00 2001
From: Mark Shannon <mark@hotpy.org>
Date: Fri, 31 Jan 2025 17:13:20 +0000
Subject: GH-128563: Move some labels, to simplify implementing tailcalling
 interpreter. (GH-129525)

---
 Python/bytecodes.c | 33 +++++++++++++++++++++++++++++----
 1 file changed, 29 insertions(+), 4 deletions(-)

(limited to 'Python/bytecodes.c')

diff --git a/Python/bytecodes.c b/Python/bytecodes.c
index f659a5e5c92..effc8e0b6f6 100644
--- a/Python/bytecodes.c
+++ b/Python/bytecodes.c
@@ -5303,14 +5303,40 @@ dummy_func(
                 tstate->c_recursion_remaining += PY_EVAL_C_STACK_UNITS;
                 return NULL;
             }
-            goto resume_with_error;
+            next_instr = frame->instr_ptr;
+            stack_pointer = _PyFrame_GetStackPointer(frame);
+            goto error;
         }
 
-        label(resume_with_error) {
+        label(start_frame) {
+            if (_Py_EnterRecursivePy(tstate)) {
+                goto exit_unwind;
+            }
             next_instr = frame->instr_ptr;
             stack_pointer = _PyFrame_GetStackPointer(frame);
-            goto error;
+
+        #ifdef LLTRACE
+            {
+                int lltrace = maybe_lltrace_resume_frame(frame, GLOBALS());
+                frame->lltrace = lltrace;
+                if (lltrace < 0) {
+                    goto exit_unwind;
+                }
+            }
+        #endif
+
+        #ifdef Py_DEBUG
+            /* _PyEval_EvalFrameDefault() must not be called with an exception set,
+            because it can clear it (directly or indirectly) and so the
+            caller loses its exception */
+            assert(!_PyErr_Occurred(tstate));
+        #endif
+
+            DISPATCH();
         }
+
+
+
 // END BYTECODES //
 
     }
@@ -5320,7 +5346,6 @@ dummy_func(
  exit_unwind:
  handle_eval_breaker:
  resume_frame:
- resume_with_error:
  start_frame:
  unbound_local_error:
     ;
-- 
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