gcc/testsuite/gcc.dg/tree-ssa/pr54211.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Os" } */
   3
   4 int a, b;
   5 unsigned char e;
   6 void fn1 ()
   7 {
   8     unsigned char *c=0;
   9     for (;; a++)
  10     {
  11         unsigned char d = *(c + b);
  12         for (; &e<&d; c++)
  13             goto Found_Top;
  14     }
  15 Found_Top:
  16     if (0)
  17         goto Empty_Bitmap;
  18     for (;; a++)
  19     {
  20         unsigned char *e = c + b;
  21         for (; c < e; c++)
  22             goto Found_Bottom;
  23         c -= b;
  24     }
  25 Found_Bottom:
  26 Empty_Bitmap:
  27     ;
  28 }