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/* The RTL loop optimizer used to replace the output register of the

   inline assembly with a pseudo although the variable is declared as

   register asm ("0").  */

/* { dg-do run } */

/* { dg-options "-O2 -Wno-attributes" } */

extern void abort (void);

static unsigned char __attribute__ ((always_inline))

mytoupper (unsigned char c)

{

  if (c >= 'a' && c <= 'z')

    c -= 'a' - 'A';

  return c;

}

static unsigned long __attribute__ ((always_inline))

strlen (const char *s)

{

  register unsigned long r0 asm ("0");

  const char *tmp = s;

  asm (

#ifdef __s390x__

       "  lghi  %0, 0\n"

#else

       "  lhi   %0, 0\n"

#endif

       "0:srst  %0,%1\n"

       "  jo    0b"

       : "=d" (r0), "+a" (tmp)

       :

       :"cc");

  return r0 - (unsigned long) s;

}

char boot_command_line[] = "this is a test";

void __attribute__ ((noinline))

foo (char *str)

{

  if (strcmp (str, "THIS IS A TEST") != 0)

    abort ();

}

int

main ()

{

  char upper_command_line[1024];

  int i;

  for (i = 0; i < strlen (boot_command_line); i++)

    upper_command_line[i] = mytoupper (boot_command_line[i]);

  upper_command_line[strlen (boot_command_line)] = 0;

  foo (upper_command_line);

  return 0;

}