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

["rmansfield at qnx dot com" <gcc-bugzilla at gcc dot gnu dot org>]

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.