gh-129987: Selectively re-enable SLP autovectorization of _PyEval_EvalFrameDefault

[Yhg1s]

Only disable SLP autovectorization of _PyEval_EvalFrameDefault on newer GCCs, as the optimization bug seems to exist only on GCC 12 and later, and before GCC 9 disabling the optimization has a dramatic performance impact.

• Issue: computed-goto interpreter: Prevent the compiler from merging DISPATCH calls #129987

[mpage]

LGTM - thanks for the thorough investigation!

[Yhg1s]

For the record, I've run rerun the benchmarks on GCCs 7-15 with this change to verify it fixes the performance drop on old GCCs and doesn't affect new GCCs.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 FreeBSD14 3.x (tier-3) has failed when building commit c66ffcf.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/1232/builds/5335) and take a look at the build logs.
4. Check if the failure is related to this commit (c66ffcf) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/1232/builds/5335

Failed tests:

• test_interpreters

Summary of the results of the build (if available):

==

Click to see traceback logs

Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.x.opsec-fbsd14/build/Lib/threading.py", line 1079, in _bootstrap_inner
    self._context.run(self.run)
    ~~~~~~~~~~~~~~~~~^^^^^^^^^^
  File "/home/buildbot/buildarea/3.x.opsec-fbsd14/build/Lib/threading.py", line 1021, in run
    self._target(*self._args, **self._kwargs)
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/buildbot/buildarea/3.x.opsec-fbsd14/build/Lib/test/test_interpreters/test_stress.py", line 30, in task
    interp = interpreters.create()
  File "/home/buildbot/buildarea/3.x.opsec-fbsd14/build/Lib/test/support/interpreters/__init__.py", line 76, in create
    id = _interpreters.create(reqrefs=True)
interpreters.InterpreterError: interpreter creation failed
k


Traceback (most recent call last):
  File "<frozen getpath>", line 358, in <module>
ValueError: embedded null byte
Warning -- Uncaught thread exception: InterpreterError
Exception in thread Thread-177 (task):
RuntimeError: error evaluating path

[Yhg1s]

(Buildbot error is noise; it's been failing like that for ages.)