public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/107057] [10/11/12/13 Regression] ICE in extract_constrain_insn, at recog.cc:2692
Date: Fri, 28 Oct 2022 08:38:01 +0000 [thread overview]
Message-ID: <bug-107057-4-vzAE1HKvzV@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-107057-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107057
--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Hongtao.liu from comment #7)
> And it looks like the pattern is wrongly defined since from [1].
>
> ----------cut begin------------
> Matching constraints are used in these circumstances. More precisely, the
> two operands that match must include one input-only operand and one
> output-only operand. Moreover, the digit must be a smaller number than the
> number of the operand that uses it in the constraint.
> ----------------cut end----------
>
> (define_insn "vec_concatv2df"
> [(set (match_operand:V2DF 0 "register_operand" "=x,x,v,x,v,x,x, v,x,x")
> (vec_concat:V2DF
> (match_operand:DF 1 "nonimmediate_operand" " 0,x,v,m,m,0,x,vm,0,0")
> (match_operand:DF 2 "nonimm_or_0_operand" " x,x,v,1,1,m,m, C,x,m")))]
>
>
> For alternatvie 1, the two operands are both input only.
>
> [1]
> https://gcc.gnu.org/onlinedocs/gccint/Simple-Constraints.html#Simple-
> Constraints
Perhaps an error should be emitted for this situation?
next prev parent reply other threads:[~2022-10-28 8:38 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-27 16:25 [Bug c/107057] New: " gscfq@t-online.de
2022-09-27 16:30 ` [Bug target/107057] " pinskia at gcc dot gnu.org
2022-09-29 8:00 ` rguenth at gcc dot gnu.org
2022-09-29 11:41 ` marxin at gcc dot gnu.org
2022-09-29 12:52 ` ubizjak at gmail dot com
2022-09-29 15:01 ` [Bug rtl-optimization/107057] " ubizjak at gmail dot com
2022-10-19 6:28 ` crazylht at gmail dot com
2022-10-25 9:15 ` crazylht at gmail dot com
2022-10-26 2:16 ` crazylht at gmail dot com
2022-10-26 8:46 ` crazylht at gmail dot com
2022-10-26 8:47 ` crazylht at gmail dot com
2022-10-28 8:38 ` ubizjak at gmail dot com [this message]
2022-11-01 5:34 ` cvs-commit at gcc dot gnu.org
2022-11-01 5:38 ` crazylht at gmail dot com
2023-07-07 10:44 ` [Bug rtl-optimization/107057] [11/12 " rguenth at gcc dot gnu.org
2023-11-30 10:43 ` liuhongt 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-107057-4-vzAE1HKvzV@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).