Add stats for self iter and fix naming in summary

Author: markshannon

Python/specialize.c

@@ -669,6 +669,7 @@ _PyCode_Quicken(_Py_CODEUNIT *instructions, Py_ssize_t size, int enable_counters
 #define SPEC_FAIL_ITER_CALLABLE 28
 #define SPEC_FAIL_ITER_ASCII_STRING 29
 #define SPEC_FAIL_ITER_ASYNC_GENERATOR_SEND 30
+#define SPEC_FAIL_ITER_SELF 31
 
 // UNPACK_SEQUENCE
 
@@ -3154,6 +3155,9 @@ _Py_GatherStats_GetIter(_PyStackRef iterable)
     else if (tp == &_PyAsyncGenASend_Type) {
         kind = SPEC_FAIL_ITER_ASYNC_GENERATOR_SEND;
     }
+    else if (tp->tp_iter == PyObject_SelfIter) {
+        kind = SPEC_FAIL_ITER_SELF;
+    }
     SPECIALIZATION_FAIL(GET_ITER, kind);
 }
 #endif

Tools/scripts/summarize_stats.py

@@ -288,7 +288,7 @@ def kind_to_text(kind: int, opcode: str):
                 opcode = "SUPER"
             elif opcode.endswith("ATTR"):
                 opcode = "ATTR"
-            elif opcode in ("FOR_ITER", "SEND"):
+            elif opcode in ("FOR_ITER", "GET_ITER", "SEND"):
                 opcode = "ITER"
             elif opcode.endswith("SUBSCR"):
                 opcode = "SUBSCR"