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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/115161] [15 Regression] highway-1.0.7 miscompilation of some SSE2 intrinsics
Date: Tue, 21 May 2024 15:51:40 +0000	[thread overview]
Message-ID: <bug-115161-4-xC5PCrs80L@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-115161-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115161

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In that case we should separate *.md patterns which are used for C conversions
from the patterns used by the intrinsics, keep using what we are right now for
the former and either use UNSPEC (the quickest but not best code generating
variant) or something more complex.  If UNSPEC is used, we could get some
constant folding back by adding gimple_fold handling for those and the like of
__builtin_ia32_psubusb128 or __builtin_ia32_pminub128.
For __builtin_ia32_cvttps2dq etc. obviously the folding should either punt
folding if some argument is out of range or fold those to what the hw does.

  parent reply	other threads:[~2024-05-21 15:51 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-20 10:07 [Bug target/115161] New: " slyfox at gcc dot gnu.org
2024-05-20 11:26 ` [Bug target/115161] " slyfox at gcc dot gnu.org
2024-05-20 14:48 ` roger at nextmovesoftware dot com
2024-05-20 22:08 ` slyfox at gcc dot gnu.org
2024-05-21  6:41 ` rguenth at gcc dot gnu.org
2024-05-21 14:53 ` jakub at gcc dot gnu.org
2024-05-21 15:02 ` jakub at gcc dot gnu.org
2024-05-21 15:13 ` jakub at gcc dot gnu.org
2024-05-21 15:40 ` amonakov at gcc dot gnu.org
2024-05-21 15:50 ` slyfox at gcc dot gnu.org
2024-05-21 15:51 ` jakub at gcc dot gnu.org [this message]
2024-05-21 16:07 ` jakub at gcc dot gnu.org
2024-05-22  1:06 ` liuhongt at gcc dot gnu.org
2024-05-22  1:13 ` pinskia at gcc dot gnu.org
2024-05-22  7:27 ` jakub at gcc dot gnu.org
2024-05-22  7:41 ` slyfox at gcc dot gnu.org
2024-05-22  7:43 ` slyfox at gcc dot gnu.org
2024-05-22  7:52 ` liuhongt at gcc dot gnu.org
2024-05-22  8:03 ` jakub at gcc dot gnu.org
2024-05-22  8:22 ` amonakov at gcc dot gnu.org
2024-05-22  8:26 ` jakub at gcc dot gnu.org
2024-05-22  8:49 ` amonakov at gcc dot gnu.org
2024-05-23 10:39 ` slyfox at gcc dot gnu.org
2024-05-24 22:00 ` slyfox at gcc dot gnu.org
2024-05-25 17:15 ` amonakov at gcc dot gnu.org
2024-05-25 18:44 ` slyfox at gcc dot gnu.org
2024-05-27  0:47 ` [Bug target/115161] highway-1.0.7 miscompilation of _mm_cvttps_epi32(): invalid result assumed liuhongt at gcc dot gnu.org
2024-06-05  4:09 ` cvs-commit at gcc dot gnu.org
2024-06-05  9:13 ` slyfox at gcc dot gnu.org
2024-06-17  8:17 ` cvs-commit at gcc dot gnu.org

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