Reuse known thread state in more places instead of looking it up again.

Cython/Compiler/ExprNodes.py

@@ -9539,7 +9539,7 @@ class _YieldDelegationExprNode(YieldExprNode):
         code.put_gotref(self.result())
 
     def handle_iteration_exception(self, code):
-        code.putln("PyObject* exc_type = PyErr_Occurred();")
+        code.putln("PyObject* exc_type = __Pyx_PyErr_Occurred();")
         code.putln("if (exc_type) {")
         code.putln("if (likely(exc_type == PyExc_StopIteration || (exc_type != PyExc_GeneratorExit &&"
                    " __Pyx_PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration)))) PyErr_Clear();")
@@ -9589,7 +9589,7 @@ class AwaitIterNextExprNode(AwaitExprNode):
 
     def _generate_break(self, code):
         code.globalstate.use_utility_code(UtilityCode.load_cached("StopAsyncIteration", "Coroutine.c"))
-        code.putln("PyObject* exc_type = PyErr_Occurred();")
+        code.putln("PyObject* exc_type = __Pyx_PyErr_Occurred();")
         code.putln("if (unlikely(exc_type && (exc_type == __Pyx_PyExc_StopAsyncIteration || ("
                    " exc_type != PyExc_StopIteration && exc_type != PyExc_GeneratorExit &&"
                    " __Pyx_PyErr_GivenExceptionMatches(exc_type, __Pyx_PyExc_StopAsyncIteration))))) {")

Cython/Utility/Coroutine.c

@@ -355,6 +355,7 @@ static void __Pyx_Generator_Replace_StopIteration(CYTHON_UNUSED int in_async_gen
 
 
 //////////////////// CoroutineBase.proto ////////////////////
+//@substitute: naming
 
 typedef PyObject *(*__pyx_coroutine_body_t)(PyObject *, PyObject *);
 
@@ -401,12 +402,14 @@ static PyObject *__Pyx_Coroutine_Throw(PyObject *gen, PyObject *args); /*proto*/
     }
 static CYTHON_INLINE void __Pyx_Coroutine_ResetFrameBackpointer(__pyx_CoroutineObject *self);
 
-#if 1 || PY_VERSION_HEX < 0x030300B0
-static int __Pyx_PyGen_FetchStopIterationValue(PyObject **pvalue); /*proto*/
+#if CYTHON_FAST_THREAD_STATE
+#define __Pyx_PyGen_FetchStopIterationValue(pvalue) \
+    __Pyx_PyGen__FetchStopIterationValue($local_tstate_cname, pvalue)
 #else
-#define __Pyx_PyGen_FetchStopIterationValue(pvalue) PyGen_FetchStopIterationValue(pvalue)
+#define __Pyx_PyGen_FetchStopIterationValue(pvalue) \
+    __Pyx_PyGen__FetchStopIterationValue(__Pyx_PyThreadState_Current, pvalue)
 #endif
-
+static int __Pyx_PyGen__FetchStopIterationValue(PyThreadState *tstate, PyObject **pvalue); /*proto*/
 
 //////////////////// Coroutine.proto ////////////////////
 
@@ -462,12 +465,9 @@ static int __pyx_Generator_init(void); /*proto*/
 //   Returns 0 if no exception or StopIteration is set.
 //   If any other exception is set, returns -1 and leaves
 //   pvalue unchanged.
-#if 1 || PY_VERSION_HEX < 0x030300B0
-static int __Pyx_PyGen_FetchStopIterationValue(PyObject **pvalue) {
+static int __Pyx_PyGen__FetchStopIterationValue(CYTHON_UNUSED PyThreadState *$local_tstate_cname, PyObject **pvalue) {
     PyObject *et, *ev, *tb;
     PyObject *value = NULL;
-    __Pyx_PyThreadState_declare
-    __Pyx_PyThreadState_assign
 
     __Pyx_ErrFetch(&et, &ev, &tb);
 
@@ -554,7 +554,6 @@ static int __Pyx_PyGen_FetchStopIterationValue(PyObject **pvalue) {
     *pvalue = value;
     return 0;
 }
-#endif
 
 static CYTHON_INLINE
 void __Pyx_Coroutine_ExceptionClear(__pyx_CoroutineObject *self) {
@@ -714,7 +713,7 @@ PyObject *__Pyx_Coroutine_FinishDelegation(__pyx_CoroutineObject *gen) {
     PyObject *ret;
     PyObject *val = NULL;
     __Pyx_Coroutine_Undelegate(gen);
-    __Pyx_PyGen_FetchStopIterationValue(&val);
+    __Pyx_PyGen__FetchStopIterationValue(__Pyx_PyThreadState_Current, &val);
     // val == NULL on failure => pass on exception
     ret = __Pyx_Coroutine_SendEx(gen, val, 0);
     Py_XDECREF(val);

Cython/Utility/Exceptions.c

@@ -11,6 +11,7 @@
 
 #if CYTHON_FAST_THREAD_STATE
 #define __Pyx_PyThreadState_declare  PyThreadState *$local_tstate_cname;
+#define __Pyx_PyErr_Occurred()  $local_tstate_cname->curexc_type
 #if PY_VERSION_HEX >= 0x03050000
   #define __Pyx_PyThreadState_assign  $local_tstate_cname = _PyThreadState_UncheckedGet();
 #elif PY_VERSION_HEX >= 0x03000000
@@ -23,6 +24,7 @@
 #else
 #define __Pyx_PyThreadState_declare
 #define __Pyx_PyThreadState_assign
+#define __Pyx_PyErr_Occurred()  PyErr_Occurred()
 #endif