gcc/testsuite/gcc.c-torture/execute/pr45695.c

   1 /* PR rtl-optimization/45695 */
   2
   3 extern void abort (void);
   4
   5 __attribute__((noinline)) void
   6 g (int x)
   7 {
   8   asm volatile ("" : "+r" (x));
   9 }
  10
  11 __attribute__((noinline)) int
  12 f (int a, int b, int d)
  13 {
  14   int r = -1;
  15   b += d;
  16   if (d == a)
  17     r = b - d;
  18   g (b);
  19   return r;
  20 }
  21
  22 int
  23 main (void)
  24 {
  25   int l;
  26   asm ("" : "=r" (l) : "0" (0));
  27   if (f (l + 0, l + 1, l + 4) != -1)
  28     abort ();
  29   if (f (l + 4, l + 1, l + 4) != 1)
  30     abort ();
  31   return 0;
  32 }