gcc/testsuite/gcc.dg/graphite/pr42211.c

   1 /* { dg-options "-O3 -floop-interchange" } */
   2
   3 typedef unsigned char uint8_t;
   4
   5 void border_mirror(uint8_t *outer_img, int w, int h, int rb, int border)
   6 {
   7   uint8_t *img = outer_img + border * rb + border;
   8   int x, y;
   9
  10   for (y = -border; y < 0; y++) {
  11     for (x = -border; x < 0; x++)
  12       img[y*rb + x] = img[(-y)*rb + (-x)];
  13
  14     for (x = 0; x < w; x++)
  15       img[y*rb + x] = img[(-y)*rb + x];
  16   }
  17 }
  18
  19 void border_mirror_480(uint8_t *outer_img)
  20 {
  21   border_mirror(outer_img, 640, 480, 640 + 16*2, 16);
  22 }