gcc/testsuite/gcc.target/arm/register-variables.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O" } */
   3
   4 #include <stdlib.h>
   5
   6 void __attribute__((noinline))
   7 bar(int a, int b)
   8 {
   9   if (a != 43 || b != 42)
  10     abort();
  11 }
  12
  13 int main(void)
  14 {
  15     register int r0 asm("r0") = 42;
  16     register int r1 asm("r1") = 43;
  17     asm volatile("": "+r" (r0), "+r" (r1));
  18     bar(r1, r0);
  19     return 0;
  20 }
  21