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From: "jakub at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/20126] [3.3/3.4/4.0/4.1 Regression] Inlined memcmp makes one argument null on entry
Date: Wed, 09 Mar 2005 09:24:00 -0000 [thread overview]
Message-ID: <20050309092356.29347.qmail@sourceware.org> (raw)
In-Reply-To: <20050221214433.20126.jkohen@users.sourceforge.net>
------- Additional Comments From jakub at redhat dot com 2005-03-09 09:23 -------
Subject: Re: [PR target/20126, RFC] loop DEST_ADDR biv replacement may fail
On Wed, Mar 09, 2005 at 01:02:08AM -0300, Alexandre Oliva wrote:
> On Mar 8, 2005, Jakub Jelinek <jakub@redhat.com> wrote:
>
> > Unfortunately, it seems to break ada bootstrap on at least x86-64 and i386:
>
> Odd... It surely completed bootstrap for me with default build flags.
Your code hits just once on ali.adb
stage1/gnat1 -I- -I. -Iada -I../../gcc/ada -quiet -dumpbase ali.adb -O2 -gnatpg \
-gnata -gnatO ada/ali.o ../../gcc/ada/ali.adb -o foo.s
(gdb) p debug_rtx(v->insn)
(insn 1571 1568 1573 (set (mem/s/v/j:QI (plus:SI (reg:SI 349 [ D.4388 ])
(symbol_ref:SI ("ali__cumulative_restrictions") [flags 0x2] <var_decl 0xb7c0ea8c ali__cumulative_restrictions>)) [5 ali__cumulative_restrictions.set S1 A8])
(const_int 1 [0x1])) -1 (nil)
(nil))
(gdb) p debug_rtx(*v->location)
(plus:SI (reg:SI 349 [ D.4388 ])
(symbol_ref:SI ("ali__cumulative_restrictions") [flags 0x2] <var_decl 0xb7c0ea8c ali__cumulative_restrictions>))
(gdb) p debug_rtx(v->new_reg)
(plus:SI (reg:SI 1953)
(symbol_ref:SI ("ali__cumulative_restrictions") [flags 0x2] <var_decl 0xb7c0ea8c ali__cumulative_restrictions>))
Note that recog_memoized (v->insn) is -1 even without the change, not sure what would
fix that up. But it certainly shows that *v->location doesn't have to be
a simple pseudo, so gen_move_insn might not work.
Jakub
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20126
next prev parent reply other threads:[~2005-03-09 9:24 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-22 1:42 [Bug c/20126] New: " jkohen at users dot sourceforge dot net
2005-02-22 1:44 ` [Bug c/20126] " jkohen at users dot sourceforge dot net
2005-02-22 1:47 ` [Bug target/20126] " pinskia at gcc dot gnu dot org
2005-02-22 1:49 ` jkohen at users dot sourceforge dot net
2005-02-22 1:50 ` pinskia at gcc dot gnu dot org
2005-02-22 1:51 ` pinskia at gcc dot gnu dot org
2005-02-22 2:22 ` [Bug target/20126] [3.3/3.4/4.0 Regression] " pinskia at gcc dot gnu dot org
2005-02-22 15:55 ` jakub at gcc dot gnu dot org
2005-02-22 17:03 ` jakub at gcc dot gnu dot org
2005-03-03 7:04 ` [Bug target/20126] [3.3/3.4/4.0/4.1 " aoliva at gcc dot gnu dot org
2005-03-03 7:07 ` aoliva at gcc dot gnu dot org
2005-03-07 21:57 ` aoliva at redhat dot com
2005-03-07 22:15 ` aoliva at gcc dot gnu dot org
2005-03-09 1:47 ` jakub at redhat dot com
2005-03-09 4:02 ` aoliva at redhat dot com
2005-03-09 8:51 ` jakub at redhat dot com
2005-03-09 9:24 ` jakub at redhat dot com [this message]
2005-03-10 11:45 ` aoliva at redhat dot com
2005-03-11 14:30 ` aoliva at redhat dot com
2005-04-02 17:22 ` aoliva at redhat dot com
2005-04-05 4:22 ` roger at eyesopen dot com
2005-04-08 16:34 ` aoliva at redhat dot com
2005-04-08 17:03 ` roger at eyesopen dot com
2005-04-08 20:51 ` aoliva at redhat dot com
2005-04-10 2:43 ` aoliva at redhat dot com
2005-04-10 3:18 ` roger at eyesopen dot com
2005-04-10 4:01 ` cvs-commit at gcc dot gnu dot org
2005-04-10 18:44 ` mark at codesourcery dot com
2005-04-10 21:00 ` [Bug target/20126] [3.3/3.4/4.0 " pinskia at gcc dot gnu dot org
2005-04-11 3:51 ` aoliva at redhat dot com
2005-04-11 21:11 ` jconner at apple dot com
2005-04-12 3:36 ` aoliva at redhat dot com
2005-04-12 6:59 ` aoliva at redhat dot com
2005-04-12 8:19 ` aoliva at redhat dot com
2005-04-12 14:39 ` roger at eyesopen dot com
2005-04-12 17:55 ` mmitchel at gcc dot gnu dot org
2005-04-13 9:47 ` jakub at redhat dot com
2005-04-13 10:10 ` bernds_cb1 at t-online dot de
2005-04-13 11:39 ` jakub at redhat dot com
2005-04-13 21:01 ` joseph at codesourcery dot com
2005-04-14 6:03 ` mark at codesourcery dot com
2005-04-14 6:14 ` cvs-commit at gcc dot gnu dot org
2005-04-14 17:21 ` aoliva at redhat dot com
2005-04-14 17:38 ` roger at eyesopen dot com
2005-04-15 3:31 ` aoliva at redhat dot com
2005-04-15 14:52 ` roger at eyesopen dot com
2005-04-16 17:50 ` rearnsha at gcc dot gnu dot org
2005-04-16 21:42 ` cvs-commit at gcc dot gnu dot org
2005-04-16 21:49 ` aoliva at redhat dot com
2005-04-16 21:58 ` aoliva at redhat dot com
2005-04-17 0:22 ` roger at eyesopen dot com
2005-04-17 2:38 ` aoliva at redhat dot com
2005-04-17 2:46 ` mmitchel at gcc dot gnu dot org
2005-04-17 3:06 ` roger at eyesopen dot com
2005-05-19 17:28 ` [Bug target/20126] [3.3/3.4 " mmitchel at gcc dot gnu dot org
2005-07-07 19:20 ` [Bug target/20126] [3.4 " uweigand at gcc dot gnu dot org
2005-07-08 12:25 ` aoliva at gcc dot gnu dot org
2005-07-08 15:48 ` uweigand at gcc dot gnu dot org
2005-07-11 3:56 ` cvs-commit at gcc dot gnu dot org
2005-07-12 4:11 ` belyshev at depni dot sinp dot msu dot ru
2005-07-13 22:30 ` uweigand at gcc dot gnu dot org
2005-07-14 18:48 ` aoliva at gcc dot gnu dot org
2005-07-14 21:17 ` cvs-commit at gcc dot gnu dot org
2005-08-04 23:12 ` belyshev at depni dot sinp dot msu dot ru
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