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

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