gcc/testsuite/gcc.dg/vect/vect-neg-store-1.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include "tree-vect.h"
   4
   5 extern void abort (void);
   6
   7 __attribute__((noinline, noclone))
   8 void test1(short x[128])
   9 {
  10     int i;
  11     for (i=127; i>=0; i--) {
  12         x[i] = 1234;
  13     }
  14 }
  15
  16 int main (void)
  17 {
  18   short x[128 + 32];
  19   int i;
  20
  21   check_vect ();
  22
  23   for (i = 0; i < 16; i ++)
  24     {
  25       asm ("");
  26       x[i] = x[i + 144] = 5678;
  27     }
  28
  29   test1 (x + 16);
  30
  31 #pragma GCC novector
  32   for (i = 0; i < 128; i++)
  33    if (x[i + 16] != 1234)
  34      abort ();
  35
  36 #pragma GCC novector
  37   for (i = 0; i < 16; i++)
  38     if (x[i] != 5678
  39        || x[i + 144] != 5678)
  40       abort ();
  41
  42   return 0;
  43 }
  44
  45 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */