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

   1 /* { dg-require-effective-target vect_int } */
   2 #include <stdarg.h>
   3 #include "tree-vect.h"
   4
   5 #define N 96
   6 #define M 128
   7 unsigned short in[N+M];
   8 unsigned int out[N];
   9 unsigned char arr[N];
  10
  11 /* Outer-loop vectorization. */
  12 /* Not vectorized due to multiple-types in the inner-loop.  */
  13
  14 __attribute__ ((noinline)) unsigned int
  15 foo (){
  16   int i,j;
  17   unsigned int diff;
  18   unsigned int s=0;
  19
  20   for (i = 0; i < N; i++) {
  21     arr[i] = 3;
  22     diff = 0;
  23     for (j = 0; j < M; j+=8) {
  24       diff += in[j+i];
  25     }
  26     s+=diff;
  27   }
  28   return s;
  29 }
  30
  31 __attribute__ ((noinline)) unsigned int
  32 bar (int i, unsigned int diff, unsigned short *in)
  33 {
  34     int j;
  35     for (j = 0; j < M; j+=8) {
  36       diff += in[j+i];
  37     }
  38     return diff;
  39 }
  40
  41 int main (void)
  42 {
  43   int i, j;
  44   unsigned int diff;
  45   unsigned int s=0,sum=0;
  46
  47   check_vect ();
  48
  49   for (i = 0; i < N+M; i++) {
  50     in[i] = i;
  51   }
  52
  53   sum=foo ();
  54
  55   for (i = 0; i < N; i++) {
  56     arr[i] = 3;
  57     diff = 0;
  58     diff = bar (i, diff, in);
  59     s += diff;
  60   }
  61
  62   if (s != sum)
  63     abort ();
  64
  65   return 0;
  66 }
  67
  68 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect" { xfail *-*-* } } } */