modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/compile/pr32349.c (about)

     1  /* { dg-options "-fmodulo-sched" } */
     2  
     3  
     4  extern long *x1, *x2, *x3;
     5  
     6  int
     7  foo ()
     8  {
     9    /* Switching the following two lines prevents the ICE.  */
    10    long *p1, *p2;
    11    long m, n, i;
    12  
    13    p1 = x1;
    14    p2 = x2;
    15    n = 0;
    16    for (i = *x3; 0 < i; i--)
    17      {
    18        m = (*p1++) ^ (*p2++);
    19        m = (m & 0x55555555) + ((m >> 1) & 0x55555555);
    20        m = (m & 0x33333333) + ((m >> 2) & 0x33333333);
    21        m = (m + (m >> 4)) & 0x0f0f0f0f;
    22        m = (m + (m >> 8));
    23        n += m;
    24      }
    25    return n;
    26  }