commit 0a67f82eb1daf0afaebc68f31ac7e4609f314353
author Brandt Bucher <brandtbucher@microsoft.com> Wed Oct 12 16:04:47 2022 -0700
committer GitHub <noreply@github.com> Wed Oct 12 16:04:47 2022 -0700
tree cd09edcef01e8c10bfb5540778088886b9160ee8
parent 450306ed6770d7ffd16cb9128e471677dda9b3d1

[3.11] GH-93354: Fix PRECALL's adaptive backoff (GH-98011)

Misc/NEWS.d/next/Core and Builtins/2022-10-06-05-41-01.gh-issue-93354.6BpHl2.rst

diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-10-06-05-41-01.gh-issue-93354.6BpHl2.rst b/Misc/NEWS.d/next/Core and Builtins/2022-10-06-05-41-01.gh-issue-93354.6BpHl2.rst
new file mode 100644
index 0000000..4efc10d
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2022-10-06-05-41-01.gh-issue-93354.6BpHl2.rst
@@ -0,0 +1,2 @@
+Fix an issue that could delay the specialization of :opcode:`PRECALL`
+instructions.

Python/ceval.c

diff --git a/Python/ceval.c b/Python/ceval.c
index c5283ac..c0d9c68 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -4793,7 +4793,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
 
         TARGET(PRECALL_ADAPTIVE) {
             _PyPrecallCache *cache = (_PyPrecallCache *)next_instr;
-            if (cache->counter == 0) {
+            if (ADAPTIVE_COUNTER_IS_ZERO(cache)) {
                 next_instr--;
                 int is_meth = is_method(stack_pointer, oparg);
                 int nargs = oparg + is_meth;
@@ -4807,7 +4807,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
             }
             else {
                 STAT_INC(PRECALL, deferred);
-                cache->counter--;
+                DECREMENT_ADAPTIVE_COUNTER(cache);
                 JUMP_TO_INSTRUCTION(PRECALL);
             }
         }