gcc/testsuite/gcc.c-torture/compile/20020312-1.c

   1 /* This does not compile on HC11/HC12 due to the asm which requires
   2    two 32-bit registers.  */
   3 /* { dg-do assemble { xfail m6811-*-* m6812-*-* } } */
   4
   5 /* PR optimization/5892 */
   6 typedef struct { unsigned long a; unsigned int b, c; } A;
   7 typedef struct { unsigned long a; A *b; int c; } B;
   8
   9 static inline unsigned int
  10 bar (unsigned int x)
  11 {
  12   unsigned long r;
  13   asm ("" : "=r" (r) : "0" (x));
  14   return r >> 31;
  15 }
  16
  17 int foo (B *x)
  18 {
  19   A *y;
  20   y = x->b;
  21   y->b = bar (x->c);
  22   y->c = ({ unsigned int z = 1; (z << 24) | (z >> 24); });
  23 }