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* [Bug middle-end/113959] New: Optimize `__builtin_isnan(x) || __builtin_isinf(x)` to `__builtin_isfinite(x)`
@ 2024-02-16 14:16 antoshkka at gmail dot com
2024-02-17 0:32 ` [Bug middle-end/113959] " pinskia at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: antoshkka at gmail dot com @ 2024-02-16 14:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113959
Bug ID: 113959
Summary: Optimize `__builtin_isnan(x) || __builtin_isinf(x)` to
`__builtin_isfinite(x)`
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: antoshkka at gmail dot com
Target Milestone: ---
Sometimes people check for finite number using `__builtin_isnan(x) ||
__builtin_isinf(x)`. However `__builtin_isfinite(x)` produces a better
assembly.
Please, add the optimization.
Godbolt playground: https://godbolt.org/z/5r38169fn
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/113959] Optimize `__builtin_isnan(x) || __builtin_isinf(x)` to `__builtin_isfinite(x)`
2024-02-16 14:16 [Bug middle-end/113959] New: Optimize `__builtin_isnan(x) || __builtin_isinf(x)` to `__builtin_isfinite(x)` antoshkka at gmail dot com
@ 2024-02-17 0:32 ` pinskia at gcc dot gnu.org
2024-02-17 0:33 ` pinskia at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-02-17 0:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113959
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/113959] Optimize `__builtin_isnan(x) || __builtin_isinf(x)` to `__builtin_isfinite(x)`
2024-02-16 14:16 [Bug middle-end/113959] New: Optimize `__builtin_isnan(x) || __builtin_isinf(x)` to `__builtin_isfinite(x)` antoshkka at gmail dot com
2024-02-17 0:32 ` [Bug middle-end/113959] " pinskia at gcc dot gnu.org
@ 2024-02-17 0:33 ` pinskia at gcc dot gnu.org
2024-02-17 2:17 ` harald at gigawatt dot nl
2024-02-19 7:48 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-02-17 0:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113959
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 57440
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57440&action=edit
testcase from the godbolt link
Next time attach the testcase or put it in line instead of just linking to
godbolt.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/113959] Optimize `__builtin_isnan(x) || __builtin_isinf(x)` to `__builtin_isfinite(x)`
2024-02-16 14:16 [Bug middle-end/113959] New: Optimize `__builtin_isnan(x) || __builtin_isinf(x)` to `__builtin_isfinite(x)` antoshkka at gmail dot com
2024-02-17 0:32 ` [Bug middle-end/113959] " pinskia at gcc dot gnu.org
2024-02-17 0:33 ` pinskia at gcc dot gnu.org
@ 2024-02-17 2:17 ` harald at gigawatt dot nl
2024-02-19 7:48 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: harald at gigawatt dot nl @ 2024-02-17 2:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113959
Harald van Dijk <harald at gigawatt dot nl> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |harald at gigawatt dot nl
--- Comment #2 from Harald van Dijk <harald at gigawatt dot nl> ---
See also bug #66462: the code currently generated is wrong under
-fsignaling-nans, a patch has been posted to fix that, and had then been
forgotten. The patch may possibly improve codegen regardless of
-fsignaling-nans.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/113959] Optimize `__builtin_isnan(x) || __builtin_isinf(x)` to `__builtin_isfinite(x)`
2024-02-16 14:16 [Bug middle-end/113959] New: Optimize `__builtin_isnan(x) || __builtin_isinf(x)` to `__builtin_isfinite(x)` antoshkka at gmail dot com
` (2 preceding siblings ...)
2024-02-17 2:17 ` harald at gigawatt dot nl
@ 2024-02-19 7:48 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2024-02-19 7:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113959
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Last reconfirmed| |2024-02-19
Status|UNCONFIRMED |NEW
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
^ permalink raw reply [flat|nested] 5+ messages in thread
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2024-02-16 14:16 [Bug middle-end/113959] New: Optimize `__builtin_isnan(x) || __builtin_isinf(x)` to `__builtin_isfinite(x)` antoshkka at gmail dot com
2024-02-17 0:32 ` [Bug middle-end/113959] " pinskia at gcc dot gnu.org
2024-02-17 0:33 ` pinskia at gcc dot gnu.org
2024-02-17 2:17 ` harald at gigawatt dot nl
2024-02-19 7:48 ` rguenth at gcc dot gnu.org
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