--- Comment #16 from amodra at gcc dot gnu dot org 2010-06-03 02:47 ---
Subject: Bug 44169
Author: amodra
Date: Thu Jun 3 02:47:11 2010
New Revision: 160206
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=160206
Log:
PR target/44169
* config/rs6000/rs6000.md
--- Comment #17 from amodra at gcc dot gnu dot org 2010-06-03 02:57 ---
Subject: Bug 44169
Author: amodra
Date: Thu Jun 3 02:57:19 2010
New Revision: 160207
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=160207
Log:
PR target/44169
* config/rs6000/rs6000.md
--- Comment #18 from amodra at gcc dot gnu dot org 2010-06-03 03:09 ---
Subject: Bug 44169
Author: amodra
Date: Thu Jun 3 03:08:32 2010
New Revision: 160208
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=160208
Log:
PR target/44169
* config/rs6000/rs6000.md
--- Comment #19 from amodra at gmail dot com 2010-06-03 03:26 ---
Fixed all active branches
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amodra at gmail dot com changed:
What|Removed |Added
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amodra at gmail dot com changed:
What|Removed |Added
AssignedTo|unassigned at gcc dot gnu |amodra at gmail dot com
|dot org |
--- Comment #15 from amodra at gmail dot com 2010-05-28 13:16 ---
Created an attachment (id=20768)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20768action=view)
gcc-4.4 patch
The underlying problem is that the load_toc_v4_PIC_1b rtl doesn't properly
describe that its output
--- Comment #12 from amodra at gmail dot com 2010-05-28 02:28 ---
This problem can be seen on powerpc-linux-gcc with the options -O1 -fPIC
-ftls-model=initial-exec -misel.
The error occurs between 172r.ira and 174r.postreload, not at 186r.dce as
previously reported.
--
amodra at
--- Comment #13 from amodra at gmail dot com 2010-05-28 02:31 ---
Created an attachment (id=20765)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20765action=view)
ok at this point
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amodra at gmail dot com changed:
What|Removed |Added
--- Comment #14 from amodra at gmail dot com 2010-05-28 02:32 ---
Created an attachment (id=20766)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20766action=view)
broken here, see insn 27
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44169
--- Comment #11 from gcc at breakpoint dot cc 2010-05-21 15:21 ---
Reverting the change in PR39254 makes the issue go away.
Any ideas?
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44169
--- Comment #6 from segher at gcc dot gnu dot org 2010-05-20 12:10 ---
I don't see the problem with 4.3 .
Kyle, are you sure it doesn't happen for you with 4.4?
I use
powerpc-linux-gnuspe-gcc -Wall -W -O1 -pthread -ftls-model=initial-exec
-mcpu=8540 -fPIC -S t.c -fverbose-asm
paste
--- Comment #7 from Kyle dot D dot Moffett at boeing dot com 2010-05-20
12:17 ---
Created an attachment (id=20707)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20707action=view)
Assembled tc.c output from Debian-built powerpc-linux-gnuspe-gcc 4.3.4
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--- Comment #8 from Kyle dot D dot Moffett at boeing dot com 2010-05-20
12:19 ---
Created an attachment (id=20708)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20708action=view)
Assembled tc.c output from Debian-built powerpc-linux-gnuspe-gcc 4.4.4
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--- Comment #9 from Kyle dot D dot Moffett at boeing dot com 2010-05-20
12:29 ---
Created an attachment (id=20710)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20710action=view)
Assembled tc.c output from Debian-built powerpc-linux-gnuspe-gcc 4.4.2
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--- Comment #10 from Kyle dot D dot Moffett at boeing dot com 2010-05-20
12:37 ---
Ok, it looks like the bug was introduced in the 4.4 branch between 4.4.2 and
4.4.4, because my old GCC 4.4.2 compiler works, but the 4.4.4 I built yesterday
after I noticed this report does not.
If
--- Comment #5 from Kyle dot D dot Moffett at boeing dot com 2010-05-20
04:53 ---
I am not able to reproduce this with a cross-compiling GCC 4.4.3 or 4.4.4 built
from Debian sources. Configuration parameters for GCC 4.4.4 were:
-v
--with-pkgversion='Debian 4.4.4-2'
--- Comment #4 from segher at gcc dot gnu dot org 2010-05-18 08:26 ---
Confirmed with current 4.4 branch and mainline.
-mabi=nospe -mno=spe doesn't make the problem go away; only
changing -mcpu does.
--
segher at gcc dot gnu dot org changed:
What|Removed
--- Comment #1 from gcc at breakpoint dot cc 2010-05-17 15:44 ---
Created an attachment (id=20683)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20683action=view)
test case
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44169
--- Comment #2 from gcc at breakpoint dot cc 2010-05-17 15:44 ---
Created an attachment (id=20684)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20684action=view)
rtl pass 185r.cprop_hardreg
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44169
--- Comment #3 from gcc at breakpoint dot cc 2010-05-17 15:45 ---
Created an attachment (id=20685)
-- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20685action=view)
rtl pass 186r.dce
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44169
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