gcc/testsuite/gcc.dg/torture/pr24257.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fgcse -fgcse-sm" } */
   3
   4 typedef struct A {
   5     int buf, left;
   6 } A;
   7
   8 static void flush(A *s, int n)
   9 {
  10     s->buf <<= n;
  11
  12     while (s->left < 32) {
  13         s->buf <<= 8;
  14         s->left += 8;
  15     }
  16
  17     s->buf=0;
  18 }
  19
  20 void oof(A *s, int n)
  21 {
  22     s->buf = n;
  23     s->left = n;
  24
  25     flush(s, n);
  26 }