gcc/testsuite/gcc.target/i386/pr31167.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target int128 } */
   3 /* { dg-options "-O" } */
   4
   5 typedef int int32_t;
   6
   7 int32_t round32hi (const __int128_t arg)
   8 {
   9   const int SHIFT = 96;
  10   const int mshift = 96;
  11   const __int128_t M = (~(__int128_t) 0) << mshift;
  12   const __int128_t L = (~M) + 1;
  13   const __int128_t L1 = ((__int128_t) L) >> 1;
  14   const __int128_t Mlo = ((__int128_t) (~M)) >> 1;
  15   __int128_t vv = arg & M;
  16
  17   if ((arg & (L1)) && ((arg & Mlo) || (arg & L)))
  18     vv += L;
  19
  20   return (int32_t) (vv >> SHIFT);
  21 }