gcc/testsuite/gcc.dg/vect/vect-outer-4m.c

   1 /* { dg-require-effective-target vect_int } */
   2 #include <stdarg.h>
   3 #include "tree-vect.h"
   4
   5 #define N 40
   6 #define M 128
   7 unsigned short in[N+M];
   8 unsigned int out[N];
   9
  10 /* Outer-loop vectorization. */
  11 /* Not vectorized due to multiple-types in the inner-loop.  */
  12
  13 __attribute__ ((noinline)) unsigned int
  14 foo (){
  15   int i,j;
  16   unsigned int diff;
  17   unsigned int s=0;
  18
  19   for (i = 0; i < N; i++) {
  20     diff = 0;
  21     for (j = 0; j < M; j+=8) {
  22       diff += in[j+i];
  23     }
  24     s+=((unsigned short)diff>>3);
  25   }
  26   return s;
  27 }
  28
  29 int main (void)
  30 {
  31   int i, j;
  32   unsigned int diff;
  33   unsigned int s=0,sum=0;
  34
  35   check_vect ();
  36
  37   for (i = 0; i < N+M; i++) {
  38     in[i] = i;
  39   }
  40
  41   sum=foo ();
  42
  43   for (i = 0; i < N; i++) {
  44     diff = 0;
  45     for (j = 0; j < M; j+=8) {
  46       diff += in[j+i];
  47     }
  48     s += ((unsigned short)diff>>3);
  49   }
  50
  51   if (s != sum)
  52     abort ();
  53
  54   return 0;
  55 }
  56
  57 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect"  { xfail *-*-* } } } */
  58 /* { dg-final { cleanup-tree-dump "vect" } } */