[Bug c/56115] New: Internal compiler error / unable to generate a relocatable output with object file(which is with lto info).

[tanjinfa at huawei dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56115

             Bug #: 56115
           Summary: Internal compiler error / unable to generate a
                    relocatable output with object file(which is with lto
                    info).
    Classification: Unclassified
           Product: gcc
           Version: 4.7.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: tanjinfa@huawei.com


I was testing this test case ./gcc.c-torture/execute/vshuf-v8qi.c individually.
The host_triplet is i586-suse-linux,build_triplet is i586-suse-linux,and
target_triplet arm-eabi.
Then  I got a compiler crash.
I cooked it down to the example below:

>armeb-linux-gnueabi-gcc crash.c -c  -flto -O2  -o crash.out
>arm-eabi-gcc -r -nostdlib -flto crash.out -o a.out

In file included from crash.c:8:0,
                 from :0:
crash.c: In function 'main':
crash.c:12:7: internal compiler error: in expand_expr_real_2, at expr.c:8808
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: ./new/install/bin/armeb-linux-gnueabi-gcc returned 1 exit status
/home/tjf/SVN/new/install/bin/../lib/gcc/armeb-linux-gnueabi/4.7.1/../../../../armeb-linux-gnueabi/bin/ld:
lto-wrapper failed
collect2: error: ld returned 1 exit status

-----------crash.c------------------
typedef char V __attribute__((vector_size(8)));
struct S
{
  V in;
  V mask;
  V out;
};
struct S sss={{ 0, 1, 2, 3, 4, 5, 6, 7 },{ 8, 9, 10, 11, 12, 13, 14, 15 },{ 0,
1, 2, 3, 4, 5, 6, 7 }};
extern void abort(void);
int main()
{
V r = __builtin_shuffle(sss.in,sss.mask);
__builtin_memcmp(&r,&sss.out, sizeof(V));
abort();
  return 0;
}