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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/105617] [12/13 Regression] Slp is maybe too aggressive in some/many cases
Date: Thu, 19 May 2022 08:05:41 +0000 [thread overview]
Message-ID: <bug-105617-4-kSoLdXx3pL@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-105617-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105617
--- Comment #13 from Hongtao.liu <crazylht at gmail dot com> ---
> so for the situation at hand I don't see any reasonable way out that
> doesn't have the chance of regressing things in other places (like
> treat loads from non-indexed auto variables specially or so). The
> only real solution is to find a GIMPLE representation for
> __builtin_ia32_addcarryx_u64 that doesn't force the alternate output
> to memory.
Do we support parameter with "out" attribute(a parameter will be set by
builtin)? __builtin_ia32_addcarryx_u64 produces 2 outputs, one can be return
another must use by-reference parameter which force memory usage here.
next prev parent reply other threads:[~2022-05-19 8:05 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-16 12:08 [Bug target/105617] New: Regression in code generation for _addcarry_u64() already5chosen at yahoo dot com
2022-05-16 12:13 ` [Bug target/105617] [12/13 regressi] Slp is maybe too aggressive in some/many cases pinskia at gcc dot gnu.org
2022-05-16 12:14 ` pinskia at gcc dot gnu.org
2022-05-16 12:15 ` rguenth at gcc dot gnu.org
2022-05-16 12:38 ` [Bug target/105617] [12/13 Regression] " already5chosen at yahoo dot com
2022-05-16 13:02 ` already5chosen at yahoo dot com
2022-05-16 14:08 ` already5chosen at yahoo dot com
2022-05-17 2:47 ` crazylht at gmail dot com
2022-05-17 3:29 ` crazylht at gmail dot com
2022-05-17 3:37 ` crazylht at gmail dot com
2022-05-17 6:48 ` rguenth at gcc dot gnu.org
2022-05-17 9:17 ` already5chosen at yahoo dot com
2022-05-17 9:25 ` already5chosen at yahoo dot com
2022-05-19 8:05 ` crazylht at gmail dot com [this message]
2022-07-26 11:22 ` rguenth at gcc dot gnu.org
2022-07-26 11:22 ` rguenth at gcc dot gnu.org
2022-07-29 13:21 ` already5chosen at yahoo dot com
2023-05-08 12:24 ` [Bug target/105617] [12/13/14 " rguenth at gcc dot gnu.org
2023-06-01 7:58 ` slash.tmp at free dot fr
2023-06-07 23:16 ` already5chosen at yahoo dot com
2023-06-13 14:54 ` slash.tmp at free dot fr
2023-06-16 14:56 ` already5chosen at yahoo dot com
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