[Bug target/68400] ICE in change_address_1, at emit-rtl.c:2125

["sje at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68400

Steve Ellcey <sje at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-01-25
     Ever confirmed|0                           |1

--- Comment #3 from Steve Ellcey <sje at gcc dot gnu.org> ---
Here is a cutdown test case that I used to reproduce the problem.  I used the
'-mips32r2 -mips216 -Os -fstack-protector' options.

typedef struct s {
 unsigned long long d;
 long long t;
} p;

int sh(int x, unsigned char *buf)
{
 p *uhdr = (p *)buf;
 unsigned int i = 0;
 uhdr->d = ((uhdr->d & 0xff00000000000000LL) >> 56)
            | ((uhdr->d & 0x0000ff0000000000LL) >> 24)
            | ((uhdr->d & 0x00000000ff000000LL) << 8)
            | ((uhdr->d & 0x00000000000000ffLL) << 56);
 uhdr->t = ((uhdr->t & 0xff00000000000000LL) >> 56)
                | ((uhdr->t & 0x0000ff0000000000LL) >> 24)
                | ((uhdr->t & 0x000000ff00000000LL) >> 8)
                | ((uhdr->t & 0x00000000ff000000LL) << 8)
                | ((uhdr->t & 0x000000000000ff00LL) << 40)
                | ((uhdr->t & 0x00000000000000ffLL) << 56);
 i += 4;
 if (x < i) return 0; else return 1;
}