[Bug target/31167] ICE wnen using __int128_t on x86_64

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2007-03-13 22:00 -------
Confirmed.  C testcase:

typedef int int32_t;
int32_t round32hi(const __int128_t arg)
{
    const int SHIFT = 96;
    const int mshift = 96;
    const __int128_t M = (~(__int128_t)0)<<mshift;
    const __int128_t L = (~M) + 1;
    const __int128_t L1 = ((__int128_t)L)>>1;
    const __int128_t Mlo = ((__int128_t)(~M))>>1;
    __int128_t vv = arg & M;
    if( (arg & (L1))      // hi bit of discard set
        && ( (arg & Mlo)  // and ( any other bits of discard set
             || (arg & L) ) )   //       or lo bit of keep set )
        vv += L;
    return (int32_t)(vv>>SHIFT);
}


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-03-13 22:00:38
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31167