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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/100363] gcc generating wider load/store than warranted at -O3
Date: Fri, 30 Apr 2021 21:43:52 +0000 [thread overview]
Message-ID: <bug-100363-4-am3ILl01og@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-100363-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100363
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Last reconfirmed| |2021-04-30
Status|UNCONFIRMED |WAITING
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The loop gets vectorized, I don't see the problem really.
Also I don't see the preprocessed source. Can you attach that?
Is the problem that the loads have to be done in 2 bytes always from the
hardware?
If so then you need to mark the pointer as volatile.
next prev parent reply other threads:[~2021-04-30 21:43 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-30 20:09 [Bug c/100363] New: " vgupta at synopsys dot com
2021-04-30 21:43 ` pinskia at gcc dot gnu.org [this message]
2021-04-30 21:44 ` [Bug middle-end/100363] " pinskia at gcc dot gnu.org
2021-04-30 21:56 ` vgupta at synopsys dot com
2021-04-30 22:02 ` torvalds@linux-foundation.org
2021-04-30 22:19 ` [Bug tree-optimization/100363] " pinskia at gcc dot gnu.org
2021-04-30 22:20 ` pinskia at gcc dot gnu.org
2021-04-30 22:33 ` vgupta at synopsys dot com
2021-05-01 22:54 ` amonakov at gcc dot gnu.org
2021-05-01 23:09 ` torvalds@linux-foundation.org
2021-05-03 7:41 ` rguenth at gcc dot gnu.org
2021-05-03 16:03 ` torvalds@linux-foundation.org
2021-05-03 16:18 ` torvalds@linux-foundation.org
2021-05-03 17:25 ` vgupta at synopsys dot com
2021-05-03 17:28 ` vgupta at synopsys dot com
2021-05-03 17:47 ` torvalds@linux-foundation.org
2021-05-03 18:45 ` vgupta at synopsys dot com
2021-05-03 19:43 ` pinskia at gcc dot gnu.org
2021-05-04 6:24 ` rguenth at gcc dot gnu.org
2021-05-04 19:33 ` vgupta at synopsys dot com
2021-05-05 6:32 ` rguenther at suse dot de
2021-05-05 19:59 ` ndesaulniers at google dot com
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