gcc/testsuite/gcc.dg/guality/pr101905.c

   1 /* { dg-do run { target { { i?86-*-* x86_64-*-* } && lp64 } } } */
   2 /* { dg-options "-g -ffixed-r15" } */
   3 /* { dg-skip-if "" { *-*-* }  { "*" } { "-O0" } } */
   4
   5 register unsigned long long regVar asm ("r15");
   6
   7 int
   8 main()
   9 {
  10   regVar = 0xdeadbeefcafebabeULL;
  11   asm ("nop" : "+r" (regVar));
  12   asm volatile ("nop");         /* { dg-final { gdb-test . "regVar" "0xdeadbeefcafebabeULL" } } */
  13   asm volatile ("nop" : : "r" (regVar));
  14   return 0;
  15 }