gcc/testsuite/gcc.dg/pr89313.c

   1 /* PR rtl-optimization/89313  */
   2 /* { dg-do compile { target aarch64*-*-* arm*-*-* i?86-*-* powerpc*-*-* s390*-*-* x86_64-*-* } } */
   3 /* { dg-options "-O2" } */
   4
   5 #if defined (__aarch64__)
   6 # define REG "x0"
   7 #elif defined (__arm__)
   8 # define REG "r0"
   9 #elif defined (__i386__)
  10 # define REG "%eax"
  11 #elif defined (__powerpc__) || defined (__POWERPC__)
  12 # define REG "r3"
  13 #elif defined (__s390__)
  14 # define REG "0"
  15 #elif defined (__x86_64__)
  16 # define REG "rax"
  17 #endif
  18
  19 long
  20 bug (long arg)
  21 {
  22   register long output asm (REG);
  23   long input = arg;
  24   asm ("blah %0, %1, %2" : "=&r" (output) : "r" (input), "0" (input));
  25   return output;
  26 }