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bpo-41873: Add vectorcall for float()#22432

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Merged
corona10 merged 4 commits intopython:masterfromsweeneyde:float_vectorcall
Sep 29, 2020

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sweeneyde
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@sweeneydesweeneyde commentedSep 28, 2020
edited by bedevere-bot
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Your patch will cause the crash

Type "help", "copyright", "credits" or "license" for more information.>>> float()[1]    44448 segmentation fault  ./python.exe

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A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phraseI have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

And if you don't make the requested changes, you will be put in the comfy chair!

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Please add the test case that I pointed out -> the case is already existed.

return NULL;
}

return float_new_impl((PyTypeObject *)type, args[0]);
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@corona10corona10Sep 28, 2020
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Suggested change
returnfloat_new_impl((PyTypeObject*)type,args[0]);
PyObject*x=NULL;
if (nargs>0) {
x=args[0];
}else {
x=_PyLong_Zero;
}
returnfloat_new_impl((PyTypeObject*)type,x);

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I have made the requested changes; please review again.

@corona10 I didn't see any occurrences offloat() in test_float.py, so I added a test. Where are you saying the test already exists?

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Thanks for making the requested changes!

@corona10: please review the changes made to this pull request.

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I didn't see any occurrences of float() in test_float.py

https://github.com/python/cpython/pull/22432/checks?check_run_id=1175574849

There was already a crash on your PR on CI phase.
So I guess that there is already in, but it looks like good to add the case ontest_float.py

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I am lgtm about the changes,
but let's wait for other core devs opinions about adding vectorcall for float type.

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corona10 commentedSep 28, 2020
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@markshannon

This PR is same case from#22427

Do you think that the vectorcall is good enough to apply for float() call also from the maintenance cost view?

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LGTM. IMHO removing 27.5 ns on 79 ns (1.5x faster) per float(obj) is worth it.

I let@corona10 merge the PR ;-)

@corona10corona10 merged commite8acc35 intopython:masterSep 29, 2020
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⚠️⚠️⚠️ Buildbot failure⚠️⚠️⚠️

Hi! The buildbots390x RHEL8 LTO 3.x has failed when building commite8acc35.

What do you need to do:

  1. Don't panic.
  2. Checkthe 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/all/#builders/567/builds/758) and take a look at the build logs.
  4. Check if the failure is related to this commit (e8acc35) 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/all/#builders/567/builds/758

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

== Tests result: ENV CHANGED ==

408 tests OK.

10 slowest tests:

  • test_concurrent_futures: 2 min 53 sec
  • test_peg_generator: 2 min 52 sec
  • test_gdb: 1 min 36 sec
  • test_multiprocessing_spawn: 1 min 13 sec
  • test_multiprocessing_forkserver: 1 min 1 sec
  • test_multiprocessing_fork: 53.5 sec
  • test_asyncio: 49.1 sec
  • test_signal: 47.1 sec
  • test_tokenize: 34.3 sec
  • test_io: 34.0 sec

1 test altered the execution environment:
test_asyncio

14 tests skipped:
test_devpoll test_ioctl test_kqueue test_msilib test_nis
test_ossaudiodev test_startfile test_tix test_tk test_ttk_guionly
test_winconsoleio test_winreg test_winsound test_zipfile64

Total duration: 5 min 33 sec

Click to see traceback logs
Traceback (most recent call last):  File"/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto/build/Lib/asyncio/sslproto.py", line321, in__del__self.close()  File"/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto/build/Lib/asyncio/sslproto.py", line316, incloseself._ssl_protocol._start_shutdown()  File"/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto/build/Lib/asyncio/sslproto.py", line590, in_start_shutdownself._abort()  File"/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto/build/Lib/asyncio/sslproto.py", line731, in_abortself._transport.abort()  File"/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto/build/Lib/asyncio/selector_events.py", line680, inabortself._force_close(None)  File"/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto/build/Lib/asyncio/selector_events.py", line731, in_force_closeself._loop.call_soon(self._call_connection_lost, exc)  File"/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto/build/Lib/asyncio/base_events.py", line746, incall_soonself._check_closed()  File"/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z.lto/build/Lib/asyncio/base_events.py", line510, in_check_closedraiseRuntimeError('Event loop is closed')RuntimeError:Event loop is closed

shihai1991 added a commit to shihai1991/cpython that referenced this pull requestSep 29, 2020
* origin/master: (113 commits)  bpo-41773: Raise exception for non-finite weights in random.choices().  (pythonGH-22441)  bpo-41873: Add vectorcall for float() (pythonGH-22432)  bpo-41861: Convert _sqlite3 PrepareProtocolType to heap type (pythonGH-22428)  bpo-41842: Add codecs.unregister() function (pythonGH-22360)  bpo-41875: Use __builtin_unreachable when possible (pythonGH-22433)  bpo-40105: ZipFile truncate in append mode with shorter comment (pythonGH-19337)  bpo-41870: Use PEP 590 vectorcall to speed up bool()  (pythonGH-22427)  [doc] Leverage the fact that the actual types can now be indexed for typing (pythonGH-22340)  bpo-41861: Convert _sqlite3 cache and node static types to heap types (pythonGH-22417)  bpo-41858: Clarify line in optparse doc (pythonGH-22407)  Revert "Fix all Python Cookbook links (python#22205)" (pythonGH-22424)  bpo-1635741: Port _bisect module to multi-phase init (pythonGH-22415)  bpo-41428: Fix compiler warning in unionobject.c (pythonGH-22416)  Fix logging error message (pythonGH-22410)  bpo-39934: Account for control blocks in 'except' in compiler. (pythonGH-22395)  bpo-41775: Make 'IDLE Shell' the shell title  (python#22399)  bpo-41428: Fix compiler warnings in unionobject.c (pythonGH-22388)  bpo-41654: Fix compiler warning in MemoryError_dealloc() (pythonGH-22387)  bpo-41833: threading.Thread now uses the target name (pythonGH-22357)  bpo-30155: Add macros to get tzinfo from datetime instances (pythonGH-21633)  ...
xzy3 pushed a commit to xzy3/cpython that referenced this pull requestOct 18, 2020
@sweeneydesweeneyde deleted the float_vectorcall branchJanuary 25, 2022 23:09
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@vstinnervstinnervstinner approved these changes

@corona10corona10corona10 approved these changes

@markshannonmarkshannonAwaiting requested review from markshannon

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