[Bug target/49029] New: ICE in simplify_subreg, at simplify-rtx.c:5266

[Bug target/49029] New: ICE in simplify_subreg, at simplify-rtx.c:5266

[rmansfield at qnx dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49029

           Summary: ICE in simplify_subreg, at simplify-rtx.c:5266
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: rmansfield@qnx.com


$ cat ~/ice.i
#pragma pack(1)

struct S0
{
  volatile unsigned f0:11;
  signed f2:30;
};

struct S1
{
  volatile struct S0 f7;
};

struct S1 a, b;

void
bar ()
{
  foo (a.f7.f0) && foo (b.f7.f2);
}

$ ./xgcc -v
Using built-in specs.
COLLECT_GCC=./xgcc
Target: arm-unknown-linux-gnueabi
Configured with: ../configure --target=arm-unknown-linux-gnueabi
--prefix=/home/ryan/x-tools/arm-unknown-linux-gnueabi
--with-sysroot=/home/ryan/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi//sys-root
--disable-multilib
--with-local-prefix=/home/ryan/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi/sys-root
--disable-nls --enable-threads=posix --enable-symvers=gnu --enable-c99
--enable-long-long --enable-target-optspace
target_alias=arm-unknown-linux-gnueabi --enable-languages=c++ --disable-shared
--disable-libmudflap --disable-libssp
Thread model: posix
gcc version 4.7.0 20110517 (experimental) [trunk revision 173832] (GCC) 

$ ./xgcc -B. ~/ice.i
/home/ryan/ice.i: In function 'bar':
/home/ryan/ice.i:19:29: internal compiler error: in simplify_subreg, at
simplify-rtx.c:5266
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

[Bug target/49029] ICE in simplify_subreg, at simplify-rtx.c:5266

[rmansfield at qnx dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49029

Ryan Mansfield <rmansfield at qnx dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |arm-unknown-linux-gnueabi
               Host|                            |x86_64-linux-gnu
              Build|                            |x86_64-linux-gnu

--- Comment #1 from Ryan Mansfield <rmansfield at qnx dot com> 2011-05-17 18:20:32 UTC ---
Update host/target fields

[Bug middle-end/49029] ICE in simplify_subreg, at simplify-rtx.c:5266

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49029

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.05.18 09:57:22
                 CC|                            |jakub at gcc dot gnu.org
          Component|target                      |middle-end
     Ever Confirmed|0                           |1

[Bug middle-end/49029] [4.6/4.7 Regression] ICE in simplify_subreg, at simplify-rtx.c:5266

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49029

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

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

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-05-18 10:12:16 UTC ---
Created attachment 24281
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24281
gcc46-pr49029.patch

Untested fix.  I can bootstrap/regtest this on x86_64 and i686, but can't on
arm.  Can anyone please test it there?

[Bug middle-end/49029] [4.6/4.7 Regression] ICE in simplify_subreg, at simplify-rtx.c:5266

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49029

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.6.1
            Summary|ICE in simplify_subreg, at  |[4.6/4.7 Regression] ICE in
                   |simplify-rtx.c:5266         |simplify_subreg, at
                   |                            |simplify-rtx.c:5266

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-05-18 10:11:16 UTC ---
I can reproduce with the trunk and 4.6 branch, works with 4.4, assuming it
started with -fstrict-volatile-bitfields addition.

[Bug middle-end/49029] [4.6/4.7 Regression] ICE in simplify_subreg, at simplify-rtx.c:5266

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49029

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-05-22 19:03:02 UTC ---
Author: jakub
Date: Sun May 22 19:02:59 2011
New Revision: 174036

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174036
Log:
    PR middle-end/49029
    * expmed.c (extract_fixed_bit_field): Test whether target can be used
    only after deciding which mode to use.

    * gcc.c-torture/compile/pr49029.c: New test.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.c-torture/compile/pr49029.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/expmed.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog

[Bug middle-end/49029] [4.6/4.7 Regression] ICE in simplify_subreg, at simplify-rtx.c:5266

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49029

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-05-22 19:00:04 UTC ---
Author: jakub
Date: Sun May 22 19:00:00 2011
New Revision: 174034

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174034
Log:
    PR middle-end/49029
    * expmed.c (extract_fixed_bit_field): Test whether target can be used
    only after deciding which mode to use.

    * gcc.c-torture/compile/pr49029.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr49029.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/expmed.c
    trunk/gcc/testsuite/ChangeLog

[Bug middle-end/49029] [4.6/4.7 Regression] ICE in simplify_subreg, at simplify-rtx.c:5266

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49029

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

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

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-05-22 19:05:08 UTC ---
Hopefully fixed.

[Bug middle-end/49029] [4.6/4.7 Regression] ICE in simplify_subreg, at simplify-rtx.c:5266

[anitha.boyapati at atmel dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49029

Anitha Boyapati <anitha.boyapati at atmel dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |anitha.boyapati at atmel
                   |                            |dot com

--- Comment #7 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-07-18 10:17:13 UTC ---
For 4.6.1 release, the corresponding testcase from regression fails for AVR
target...

/home/anitha/patch-upgrade/gcc-4.6.1/gcc/testsuite/gcc.c-torture/compile/pr49029.c:2:8:
error: width of 'g' exceeds its type
compiler exited with status 1
FAIL: gcc.c-torture/compile/pr49029.c  -O0  (test for excess errors)


Compiler specs 
--------------

Using built-in specs.
COLLECT_GCC=avr-gcc
COLLECT_LTO_WRAPPER=/home/anitha/install/libexec/gcc/avr/4.6.1/lto-wrapper
Target: avr
Configured with: ../configure --prefix=/home/anitha/install --target=avr
--with-gmp=/proj/install/gmp-4.3.2/ --with-mpfr=/proj/install/mpfr-2.4.2/
--with-mpc=/proj/install/mpc-0.8.2/ --enable-languages=c,c++ --disable-libssp
--disable-nls --with-dwarf2
Thread model: single
gcc version 4.6.1 (GCC)