public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "bernds at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/44970] [4.6 regression] Revision 162270 failed to bootstrap
Date: Sun, 18 Jul 2010 21:01:00 -0000 [thread overview]
Message-ID: <20100718210038.2369.qmail@sourceware.org> (raw)
In-Reply-To: <bug-44970-682@http.gcc.gnu.org/bugzilla/>
------- Comment #27 from bernds at gcc dot gnu dot org 2010-07-18 21:00 -------
(In reply to comment #26)
> Subject: Re: [4.6 regression] Revision 162270 failed to bootstrap
>
> Doing a non bootstrap build, I see the following new fail:
> FAIL: gcc.c-torture/execute/950605-1.c execution, -O1
David, this seems to be caused by a different revision. The postreload pass
we're discussing here makes no changes to RTL on that testcase. Please ensure
you find the right revision that introduces a problem.
In this case, it probably was another of my changes that caused this failure,
although I can't tell what's wrong. The extend insn disappears during fwprop1:
-(insn 3 5 4 2 950605-1.c:3 (set (reg/v:DI 68 [ c+-7 ])
- (zero_extend:DI (reg:SI 26 %r26 [ c+-3 ]))) 133 {*pa.md:4633} (nil))
+(note 5 0 4 2 [bb 2] NOTE_INSN_BASIC_BLOCK)
-(note 4 3 7 2 NOTE_INSN_FUNCTION_BEG)
+(note 4 5 7 2 NOTE_INSN_FUNCTION_BEG)
(insn 7 4 8 2 950605-1.c:4 (set (reg:SI 69)
(const_int 255 [0xff])) 71 {*pa.md:2130} (nil))
(jump_insn 8 7 9 2 950605-1.c:4 (set (pc)
- (if_then_else (eq (subreg/s/u:SI (reg/v:DI 68 [ c+-7 ]) 4)
+ (if_then_else (eq (reg:SI 26 %r26 [ c+-3 ])
(reg:SI 69))
(label_ref:DI 23)
- (pc))) 46 {*pa.md:1330} (expr_list:REG_BR_PROB (const_int 9996
[0x270c])
- (nil))
+ (pc))) 46 {*pa.md:1330} (expr_list:REG_DEAD (reg:SI 69)
+ (expr_list:REG_DEAD (reg/v:DI 68 [ c+-7 ])
+ (expr_list:REG_BR_PROB (const_int 9996 [0x270c])
+ (nil))))
I can't find anything wrong with this, as it's a SImode comparison. Is the
backend emitting the correct compare instruction?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44970
next prev parent reply other threads:[~2010-07-18 21:01 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-17 2:37 [Bug bootstrap/44970] New: " hjl dot tools at gmail dot com
2010-07-17 2:38 ` [Bug bootstrap/44970] " hjl dot tools at gmail dot com
2010-07-17 15:28 ` hjl dot tools at gmail dot com
2010-07-17 15:49 ` dominiq at lps dot ens dot fr
2010-07-17 15:53 ` bernds at gcc dot gnu dot org
2010-07-17 16:12 ` hjl dot tools at gmail dot com
2010-07-17 16:15 ` dominiq at lps dot ens dot fr
2010-07-17 16:42 ` bernds at gcc dot gnu dot org
2010-07-17 16:56 ` hjl dot tools at gmail dot com
2010-07-17 17:35 ` hjl dot tools at gmail dot com
2010-07-17 17:40 ` hjl dot tools at gmail dot com
2010-07-17 17:42 ` hjl dot tools at gmail dot com
2010-07-17 22:36 ` bernds at gcc dot gnu dot org
2010-07-17 23:29 ` bernds at gcc dot gnu dot org
2010-07-18 0:32 ` hjl dot tools at gmail dot com
2010-07-18 9:57 ` mikpe at it dot uu dot se
2010-07-18 11:56 ` mikpe at it dot uu dot se
2010-07-18 12:31 ` mikpe at it dot uu dot se
2010-07-18 15:20 ` danglin at gcc dot gnu dot org
2010-07-18 15:22 ` hjl dot tools at gmail dot com
2010-07-18 18:38 ` bernds at gcc dot gnu dot org
2010-07-18 18:52 ` hjl dot tools at gmail dot com
2010-07-18 19:04 ` hjl dot tools at gmail dot com
2010-07-18 19:53 ` mikpe at it dot uu dot se
2010-07-18 20:35 ` hjl dot tools at gmail dot com
2010-07-18 20:39 ` bernds at gcc dot gnu dot org
2010-07-18 20:40 ` bernds at gcc dot gnu dot org
2010-07-18 20:43 ` dave at hiauly1 dot hia dot nrc dot ca
2010-07-18 21:01 ` bernds at gcc dot gnu dot org [this message]
2010-07-18 21:15 ` bernds at gcc dot gnu dot org
2010-07-18 21:16 ` dave at hiauly1 dot hia dot nrc dot ca
2010-07-18 22:22 ` hjl dot tools at gmail dot com
2010-07-19 7:55 ` dominiq at lps dot ens dot fr
2010-07-19 13:26 ` howarth at nitro dot med dot uc dot edu
2010-07-19 14:32 ` dave at hiauly1 dot hia dot nrc dot ca
2010-07-20 6:46 ` dominiq at lps dot ens dot fr
2010-07-20 14:22 ` bernds at gcc dot gnu dot org
2010-07-20 15:35 ` bernds at gcc dot gnu dot org
2010-07-21 1:37 ` dave at hiauly1 dot hia dot nrc dot ca
2010-07-21 22:49 ` bernds at gcc dot gnu dot org
2010-07-22 11:48 ` bernds at gcc dot gnu dot org
2010-07-22 14:08 ` hjl dot tools at gmail dot com
2010-07-22 14:26 ` dave at hiauly1 dot hia dot nrc dot ca
2010-07-22 16:48 ` hjl dot tools at gmail dot com
2010-07-22 18:17 ` dave at hiauly1 dot hia dot nrc dot ca
2010-07-22 22:47 ` dave at hiauly1 dot hia dot nrc dot ca
2010-07-22 22:54 ` bernds at gcc dot gnu dot org
2010-07-22 22:58 ` dave at hiauly1 dot hia dot nrc dot ca
2010-07-29 15:05 ` dave at hiauly1 dot hia dot nrc dot ca
2010-07-29 19:46 ` bernds at gcc dot gnu dot org
2010-07-30 2:28 ` dave at hiauly1 dot hia dot nrc dot ca
2010-07-30 15:10 ` dave at hiauly1 dot hia dot nrc dot ca
2010-07-30 15:13 ` bernds at gcc dot gnu dot org
2010-08-04 19:53 ` dave at hiauly1 dot hia dot nrc dot ca
2010-08-05 11:31 ` bernds at gcc dot gnu dot org
2010-08-05 19:26 ` dave at hiauly1 dot hia dot nrc dot ca
2010-08-05 19:56 ` bernds at gcc dot gnu dot org
2010-08-05 20:54 ` dave at hiauly1 dot hia dot nrc dot ca
2010-08-06 7:07 ` bonzini at gnu dot org
2010-08-06 9:30 ` bernds at gcc dot gnu dot org
2010-08-06 9:54 ` bonzini at gnu dot org
2010-08-06 9:58 ` bernds at codesourcery dot com
2010-08-06 10:00 ` bonzini at gnu dot org
2010-08-06 10:27 ` bernds at codesourcery dot com
2010-08-06 13:39 ` bonzini at gnu dot org
2010-08-23 20:49 ` sje at cup dot hp dot com
2010-08-24 6:50 ` bonzini at gnu dot org
2010-08-24 13:14 ` bernds at gcc dot gnu dot org
2010-08-24 13:44 ` bonzini at gnu dot org
2010-09-02 10:56 ` rguenth at gcc dot gnu dot org
2010-09-04 16:46 ` bonzini at gnu dot org
2010-09-04 16:50 ` bonzini at gnu dot org
[not found] <bug-44970-4@http.gcc.gnu.org/bugzilla/>
2010-09-25 8:17 ` laurent at guerby dot net
2010-10-12 17:43 ` laurent at guerby dot net
2010-10-13 7:37 ` bonzini at gnu dot org
2010-10-13 11:43 ` dave at hiauly1 dot hia.nrc.ca
2010-10-13 17:37 ` sje at cup dot hp.com
2010-10-18 17:20 ` bonzini at gnu dot org
2010-10-18 19:53 ` sje at cup dot hp.com
2010-10-19 16:10 ` sje at cup dot hp.com
2010-10-20 13:42 ` danglin at gcc dot gnu.org
2010-10-20 14:10 ` bonzini at gnu dot org
2010-10-20 14:39 ` dave at hiauly1 dot hia.nrc.ca
2010-10-29 22:29 ` sje at cup dot hp.com
2010-10-29 22:33 ` bonzini at gnu dot org
2010-10-29 22:39 ` sje at cup dot hp.com
2010-11-08 16:39 ` danglin at gcc dot gnu.org
2010-11-08 17:01 ` dave at hiauly1 dot hia.nrc.ca
2010-11-08 17:25 ` mikpe at it dot uu.se
2010-11-08 17:31 ` hjl.tools at gmail dot com
2010-11-14 22:54 ` bonzini at gnu dot org
2010-11-14 23:37 ` dave at hiauly1 dot hia.nrc.ca
2010-11-15 6:46 ` bonzini at gnu dot org
2010-11-17 23:55 ` bonzini at gnu dot org
2010-11-22 16:40 ` bonzini at gnu dot org
2010-11-22 17:39 ` jakub 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=20100718210038.2369.qmail@sourceware.org \
--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).