[Bug target/49987] New: [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[Bug target/49987] New: [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[iains at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

           Summary: [4.7 Regression] gcc.c-torture/compile/pr34856.c fails
                    on powerpc-darwin9 from r176228
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: iains@gcc.gnu.org
                CC: rsandifo@gcc.gnu.org
            Target: powerpc-apple-darwin9


Native configuration is powerpc-apple-darwin9
                === gcc tests ===
Running target unix/-m32

FAIL: gcc.c-torture/compile/pr34856.c  -O1  (internal compiler error)
FAIL: gcc.c-torture/compile/pr34856.c  -O1  (test for excess errors)
FAIL: gcc.c-torture/compile/pr34856.c  -O2  (internal compiler error)
FAIL: gcc.c-torture/compile/pr34856.c  -O2  (test for excess errors)
FAIL: gcc.c-torture/compile/pr34856.c  -O3 -fomit-frame-pointer  (internal
compiler error)
FAIL: gcc.c-torture/compile/pr34856.c  -O3 -fomit-frame-pointer  (test for
excess errors)
FAIL: gcc.c-torture/compile/pr34856.c  -O3 -fomit-frame-pointer -funroll-loops 
(internal compiler error)
FAIL: gcc.c-torture/compile/pr34856.c  -O3 -fomit-frame-pointer -funroll-loops 
(test for excess errors)
FAIL: gcc.c-torture/compile/pr34856.c  -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions  (internal compiler error)
FAIL: gcc.c-torture/compile/pr34856.c  -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions  (test for excess errors)
FAIL: gcc.c-torture/compile/pr34856.c  -O3 -g  (internal compiler error)
FAIL: gcc.c-torture/compile/pr34856.c  -O3 -g  (test for excess errors)
FAIL: gcc.c-torture/compile/pr34856.c  -Os  (internal compiler error)
FAIL: gcc.c-torture/compile/pr34856.c  -Os  (test for excess errors)
FAIL: gcc.c-torture/compile/pr34856.c  -O2 -flto -flto-partition=none 
(internal compiler error)
FAIL: gcc.c-torture/compile/pr34856.c  -O2 -flto -flto-partition=none  (test
for excess errors)
FAIL: gcc.c-torture/compile/pr34856.c  -O2 -flto  (internal compiler error)
FAIL: gcc.c-torture/compile/pr34856.c  -O2 -flto  (test for excess errors)

===

log:
FAIL: gcc.c-torture/compile/pr34856.c  -O1  (internal compiler error)
FAIL: gcc.c-torture/compile/pr34856.c  -O1  (test for excess errors)
Excess errors:
/GCC/gcc-live-trunk/gcc/testsuite/gcc.c-torture/compile/pr34856.c:17:1:
internal compiler error: in simplify_immed_subreg, at simplify-rtx.c:5255

===

caused by:
http://gcc.gnu.org/ml/gcc-cvs/2011-07/msg00494.html

====
appeared in :
http://gcc.gnu.org/ml/gcc-regression/2011-07/msg00248.html
and 
http://gcc.gnu.org/ml/gcc-testresults/2011-07/msg01682.html

still present in trunk at 177422

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.7.0

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.08.08 10:03:45
     Ever Confirmed|0                           |1

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-08-08 10:03:45 UTC ---
Also

FAIL: gcc.dg/pr34856.c (internal compiler error)
FAIL: gcc.dg/pr34856.c (test for excess errors)

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[rsandifo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

rsandifo@gcc.gnu.org <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
         AssignedTo|unassigned at gcc dot       |rsandifo at gcc dot gnu.org
                   |gnu.org                     |

--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-08-11 12:04:14 UTC ---
Mine

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[rsandifo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-08-11 12:13:02 UTC ---
Created attachment 24975
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24975
Proposed patch

I think the PowerPC backend needs the same fix as i386 and spu
did for #34856.  Could you try the attached patch?

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[iains at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

--- Comment #4 from Iain Sandoe <iains at gcc dot gnu.org> 2011-08-11 12:23:41 UTC ---
(In reply to comment #3)
> Created attachment 24975 [details]
> Proposed patch
> 
> I think the PowerPC backend needs the same fix as i386 and spu
> did for #34856.  Could you try the attached patch?

will do - machine tied up for a few hours - back to you later.

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[iains at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

--- Comment #5 from Iain Sandoe <iains at gcc dot gnu.org> 2011-08-11 20:07:00 UTC ---
(In reply to comment #4)
> (In reply to comment #3)
> > Created attachment 24975 [details]
> > Proposed patch
> > 
> > I think the PowerPC backend needs the same fix as i386 and spu
> > did for #34856.  Could you try the attached patch?
> 
> will do - machine tied up for a few hours - back to you later.

unfortunately, not ; the error is unchanged:

Executing on host: /Volumes/ScratchCS/gcc-4-7-trunk-build/gcc/xgcc
-B/Volumes/ScratchCS/gcc-4-7-trunk-build/gcc/   -O1  -w -c  -m32 -o pr34856.o
/GCC/g
cc-live-trunk/gcc/testsuite/gcc.c-torture/compile/pr34856.c    (timeout = 60)
/GCC/gcc-live-trunk/gcc/testsuite/gcc.c-torture/compile/pr34856.c: In function
'f1':
/GCC/gcc-live-trunk/gcc/testsuite/gcc.c-torture/compile/pr34856.c:17:1:
internal compiler error: in simplify_immed_subreg, at simplify-rtx.c:5255

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[rsandifo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

rsandifo@gcc.gnu.org <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #24975|0                           |1
        is obsolete|                            |

--- Comment #6 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-08-11 20:23:29 UTC ---
Created attachment 24987
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24987
Revised patch

Sorry, seems there are two copies of the logic.  Please try this instead.

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[iains at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

--- Comment #7 from Iain Sandoe <iains at gcc dot gnu.org> 2011-08-11 20:59:51 UTC ---
(In reply to comment #6)
> Created attachment 24987 [details]
> Revised patch
> 
> Sorry, seems there are two copies of the logic.  Please try this instead.

yes, works for me off a stage3 bubble - not tested any other case yet tho.

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[rsandifo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

--- Comment #8 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-08-19 08:31:43 UTC ---
(In reply to comment #7)
> (In reply to comment #6)
> > Created attachment 24987 [details]
> > Revised patch
> > 
> > Sorry, seems there are two copies of the logic.  Please try this instead.
> 
> yes, works for me off a stage3 bubble - not tested any other case yet tho.

Thanks.  Would you be able to run a full bootstrap and
regression test with it?  I'll submit the patch if that succeeds.

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-08-19 09:40:18 UTC ---
>  Would you be able to run a full bootstrap and
> regression test with it?  I'll submit the patch if that succeeds.

I have done a clean bootstrap of revision 177878 with the patch in comment #6.
AFAICT the patch does not introduce any regression although I had to hunt some
new failures due to revision 177691 (I'll submit a pr later today).

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aldyh at redhat dot com,
                   |                            |dje.gcc at gmail dot com,
                   |                            |pthaugen at us dot ibm.com

--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-08-29 08:58:26 UTC ---
Note that while gcc.c-torture/compile/pr34856.c does not fail on
powerpc64-unknown-linux-gnu, gcc.dg/pr34856.c does (see
http://gcc.gnu.org/ml/gcc-testresults/2011-08/msg03221.html ). Could a user of
powerpc*-linux-* try the patch at
http://gcc.gnu.org/ml/gcc-patches/2011-08/msg01861.html ?

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[pthaugen at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

Pat Haugen <pthaugen at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pthaugen at gcc dot gnu.org

--- Comment #11 from Pat Haugen <pthaugen at gcc dot gnu.org> 2011-08-30 01:11:37 UTC ---
(In reply to comment #10)
> Note that while gcc.c-torture/compile/pr34856.c does not fail on
> powerpc64-unknown-linux-gnu, gcc.dg/pr34856.c does (see
> http://gcc.gnu.org/ml/gcc-testresults/2011-08/msg03221.html ). Could a user of
> powerpc*-linux-* try the patch at
> http://gcc.gnu.org/ml/gcc-patches/2011-08/msg01861.html ?

Yes, the patch applied to trunk fixes the ICE on gcc.dg/pr34856.c. Note that
-maltivec is required to produce the error, which
gcc.c-torture/compile/pr34856.c doesn't specify so that is why it didn't fail
the same way.

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[rsandifo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

--- Comment #12 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-09-02 13:32:14 UTC ---
Author: rsandifo
Date: Fri Sep  2 13:32:10 2011
New Revision: 178474

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=178474
Log:
gcc/
    PR target/49987
    * config/rs6000/rs6000.c (paired_expand_vector_init): Check for
    valid CONST_VECTOR operands.
    (rs6000_expand_vector_init): Likewise.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000.c

[Bug target/49987] [4.7 Regression] gcc.c-torture/compile/pr34856.c fails on powerpc-darwin9 from r176228

[rsandifo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49987

rsandifo@gcc.gnu.org <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #13 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-09-03 08:38:41 UTC ---
Fixed on trunk.  Thanks for the help with the testing.