gcc/testsuite/gcc.dg/vect/vect-cond-1.c

   1 /* { dg-require-effective-target vect_condition } */
   2
   3 #include "tree-vect.h"
   4
   5 #define M 32
   6 #define N 16
   7
   8 int x_in[M];
   9 int x_out[M];
  10 int c[N] = {3,2,1,10,1,42,3,4,50,9,32,8,11,10,1,2};
  11 int a[N+1] = {0,16,32,48,64,128,256,512,0,16,32,48,64,128,256,512,1024};
  12 int check_result[M] = {1024,1024,1024,256,256,256,256,256,256,256,256,128,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48,48};
  13
  14 __attribute__ ((noinline)) void
  15 foo ()
  16 {
  17   int j, i, x;
  18   int curr_a, next_a;
  19
  20   for (j = 0; j < M; j++)
  21     {
  22       x = x_in[j];
  23       curr_a = a[0];
  24
  25       for (i = 0; i < N; i++)
  26         {
  27           next_a = a[i+1];
  28           curr_a = x > c[i] ? curr_a : next_a;
  29         }
  30
  31       x_out[j] = curr_a;
  32     }
  33 }
  34
  35 int main (void)
  36 {
  37   int i,j;
  38
  39   check_vect ();
  40
  41   for (j = 0; j < M; j++)
  42     x_in[j] = j;
  43
  44   foo ();
  45
  46   for (j = 0; j < M; j++)
  47     if (x_out[j] != check_result[j])
  48       abort ();
  49
  50   return 0;
  51 }
  52
  53 /* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect" { xfail { vect_no_align && { ! vect_hw_misalign } } } } } */
  54
  55