public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/104723] [12 regression] Redundant usage of stack
Date: Tue, 01 Mar 2022 08:44:19 +0000 [thread overview]
Message-ID: <bug-104723-4-8Z9OkSKb0k@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-104723-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104723
--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Hongtao.liu from comment #0)
> bool f256(char *a)
> {
> char t[] = "012345678901234567890123456789012345678901234567";
> return __builtin_memcpy(a, &t[0], sizeof(t)) == 0;
> }
>
> https://godbolt.org/z/jcjbT4d8e
>
> gcc12 generates
>
> vmovdqa64 ymm31, YMMWORD PTR .LC0[rip]
> xor eax, eax
> vmovdqu64 YMMWORD PTR [rsp-72], ymm31
> vmovdqa64 ymm31, YMMWORD PTR .LC1[rip]
> vmovdqu64 YMMWORD PTR [rsp-55], ymm31
> vmovdqu64 ymm31, YMMWORD PTR [rsp-72]
STF issue here?
next prev parent reply other threads:[~2022-03-01 8:44 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-01 8:35 [Bug target/104723] New: " crazylht at gmail dot com
2022-03-01 8:44 ` crazylht at gmail dot com [this message]
2022-03-01 8:47 ` [Bug target/104723] " crazylht at gmail dot com
2022-03-01 12:38 ` lili.cui at intel dot com
2022-03-01 13:41 ` rguenth at gcc dot gnu.org
2022-03-01 16:00 ` jakub at gcc dot gnu.org
2022-03-01 16:07 ` jakub at gcc dot gnu.org
2022-03-01 18:45 ` hjl.tools at gmail dot com
2022-03-01 18:50 ` hjl.tools at gmail dot com
2022-03-02 8:11 ` lili.cui at intel dot com
2022-04-22 16:28 ` jakub at gcc dot gnu.org
2022-04-24 7:37 ` lili.cui at intel dot com
2022-04-26 9:41 ` jakub at gcc dot gnu.org
2022-05-06 8:32 ` [Bug target/104723] [12/13 " jakub at gcc dot gnu.org
2022-07-26 12:58 ` rguenth at gcc dot gnu.org
2023-05-08 12:23 ` [Bug target/104723] [12/13/14 " rguenth at gcc dot gnu.org
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bug-104723-4-8Z9OkSKb0k@http.gcc.gnu.org/bugzilla/ \
--to=gcc-bugzilla@gcc.gnu.org \
--cc=gcc-bugs@gcc.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).