old-autovect-branch/gcc/testsuite/gcc.dg/vect/vect-latch.c

   1 /* { dg-do compile { target powerpc*-*-* } } */
   2 #define N 64
   3
   4 void
   5 foo (short * __restrict__ pmetric,
   6      short * __restrict__ p1,
   7      short * __restrict__ p2,
   8      short * __restrict__ out1,
   9      short * __restrict__ out2)
  10 {
  11   int i;
  12   short metric, m1, m2;
  13   short x1, x2;
  14   short y1, y2;
  15
  16   for (i = 0; i < N; i++) {
  17     metric = *pmetric++;
  18
  19     m1 = *p1 - metric;
  20     m2 = *p2 + metric;
  21     if (m1 >= m2) {
  22        x1 = m1;
  23        y1 = m1>>1;
  24     }
  25     else {
  26        x1 = m2;
  27        y1 = m2>>1;
  28     }
  29
  30     m1 = *p1 + metric;
  31     m2 = *p2 - metric;
  32     if (m1 >= m2) {
  33        x2 = m1;
  34        y2 = m1>>1;
  35     }
  36     else {
  37        x2 = m2;
  38        y2 = m2>>1;
  39     }
  40     *out1 = x1;
  41     *out2 = y1;
  42     out1++;
  43     out2++;
  44     *out1 = x2;
  45     *out2 = y2;
  46     out1++;
  47     out2++;
  48     p1++;
  49     p2++;
  50   }
  51 }
  52
  53 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  54 /* { dg-final { cleanup-tree-dump "vect" } } */