gcc/testsuite/gcc.dg/vect/vect-88.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-additional-options "--param vect-max-peeling-for-alignment=0 -fdump-tree-optimized-details-blocks" } */
   3
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define N 16
   8
   9 __attribute__ ((noinline))
  10 int main1 (int n, int *a)
  11 {
  12   int i, j, k;
  13   int b[N];
  14
  15   for (i = 0; i < n; i++)
  16     {
  17       for (j = 0; j < n; j++)
  18         {
  19           k = i + n;
  20           a[j] = k;
  21         }
  22       b[i] = k;
  23     }
  24
  25
  26 #pragma GCC novector
  27   for (j = 0; j < n; j++)
  28     if (a[j] != i + n - 1)
  29       abort();
  30
  31 #pragma GCC novector
  32   for (j = 0; j < n; j++)
  33     if (b[j] != j + n)
  34       abort();
  35
  36   return 0;
  37 }
  38
  39 int main (void)
  40 {
  41   int a[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  42
  43   check_vect ();
  44
  45   main1 (N, a+1);
  46   main1 (0, a+1);
  47   main1 (1, a+1);
  48   main1 (2, a+1);
  49   main1 (N-1, a+1);
  50
  51   return 0;
  52 }
  53
  54 /* Fails for targets that don't vectorize PLUS (e.g alpha).  */
  55 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  56 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 1 "vect" {target { {! vector_alignment_reachable} && {! vect_hw_misalign} } } } } */
  57 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */