gcc/testsuite/gcc.dg/pr49860.c

   1 /* { dg-do assemble } */
   2 /* { dg-options "-O3 -funroll-all-loops" } */
   3
   4 extern char inbuf[];
   5 extern char outbuf[];
   6 extern unsigned insize;
   7 extern unsigned inptr;
   8 static int max_len;
   9 static int peek_bits;
  10 void build_tree() {
  11   int len;
  12   char *prefixp;
  13   max_len = inbuf[inptr++];
  14   peek_bits = ((max_len) <= (12) ? (max_len) : (12));
  15   prefixp = &outbuf[1<<peek_bits];
  16   for (len = 1;
  17        len <= peek_bits;
  18        len++) {
  19   }
  20   while (prefixp > outbuf) *--prefixp = 0;
  21 }