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

   1 /* { dg-do assemble } */
   2 /* { dg-skip-if "" { pdp11-*-* } { "-O0" } { "" } } */
   3
   4 /* PR optimization/5892 */
   5 typedef struct { unsigned long a; unsigned int b, c; } A;
   6 typedef struct { unsigned long a; A *b; int c; } B;
   7
   8 static inline unsigned int
   9 bar (unsigned int x)
  10 {
  11   unsigned long r;
  12   asm ("" : "=r" (r) : "0" (x));
  13   return r >> 31;
  14 }
  15
  16 int foo (B *x)
  17 {
  18   A *y;
  19   y = x->b;
  20   y->b = bar (x->c);
  21   y->c = ({ unsigned int z = 1; (z << 24) | (z >> 24); });
  22 }