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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/31485] C complex numbers, amd64 SSE, missed optimization opportunity
Date: Tue, 21 Apr 2020 08:23:21 +0000 [thread overview]
Message-ID: <bug-31485-4-FczunHRx4y@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-31485-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31485
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Joel Yliluoma from comment #15)
> (In reply to Richard Biener from comment #14)
> > I also think llvms code generation is bogus since it appears the ABI
> > does not guarantee zeroed upper elements of the xmm0 argument
> > which means they could contain sNaNs:
>
> Why would it matter that the unused portions of the register contain NaNs?
Because it could then raise exceptions that shouldn't be raised?
next prev parent reply other threads:[~2020-04-21 8:23 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-31485-4@http.gcc.gnu.org/bugzilla/>
2020-04-21 6:43 ` bisqwit at iki dot fi
2020-04-21 7:07 ` rguenth at gcc dot gnu.org
2020-04-21 7:17 ` bisqwit at iki dot fi
2020-04-21 7:37 ` rguenth at gcc dot gnu.org
2020-04-21 8:18 ` bisqwit at iki dot fi
2020-04-21 8:23 ` jakub at gcc dot gnu.org [this message]
2020-04-21 8:29 ` rguenther at suse dot de
2020-04-21 8:32 ` jakub at gcc dot gnu.org
2020-04-21 8:33 ` jakub at gcc dot gnu.org
2020-04-21 8:34 ` bisqwit at iki dot fi
2020-04-21 8:43 ` jakub at gcc dot gnu.org
2020-04-21 8:47 ` rguenther at suse dot de
2020-04-21 8:51 ` bisqwit at iki dot fi
2020-04-21 8:58 ` jakub at gcc dot gnu.org
2020-04-21 9:06 ` bisqwit at iki dot fi
2021-08-16 21:29 ` pinskia at gcc dot gnu.org
2021-08-16 21:29 ` [Bug tree-optimization/31485] " pinskia at gcc dot gnu.org
2022-02-07 8:48 ` rguenth at gcc dot gnu.org
2023-10-01 18:45 ` pinskia at gcc dot gnu.org
2007-04-05 11:29 [Bug rtl-optimization/31485] New: " bisqwit at iki dot fi
2007-04-09 17:48 ` [Bug rtl-optimization/31485] " rguenth at gcc dot gnu dot org
2008-07-29 22:07 ` victork at gcc dot gnu dot org
2008-08-02 12:23 ` rguenth at gcc dot gnu dot org
2008-08-02 13:01 ` ubizjak at gmail dot com
2008-08-02 13:19 ` rguenth at gcc dot gnu dot org
2010-04-17 0:28 ` ddesics at gmail dot com
2010-04-17 11:11 ` rguenth at gcc dot gnu dot org
2010-04-21 11:33 ` irar at il dot ibm dot com
2010-04-21 11:44 ` rguenther at suse dot de
2010-04-21 18:34 ` irar at il dot ibm dot com
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