Subversion Repositories openrisc_2011-10-31

/* PR 5878.

   We ICEd in verify_local_live_at_start because we incorrectly forced

   the PIC register live between BAR and BAZ.  We did this because the

   definition of PIC_OFFSET_TABLE_REGNUM was incorrectly not INVALID_REGNUM

   when !flag_pic for most targets.  */

/* { dg-do run } */

/* { dg-options "-O -fno-pic" } */

extern void abort (void);

#if defined(__alpha__)

/* PIC register is $29, but is used even without -fpic.  */

#elif defined(__arc__)

# define PIC_REG  "26"

#elif defined(__arm__)

# define PIC_REG  "9"

#elif defined(AVR)

/* No pic register.  */

#elif defined(__cris__)

# define PIC_REG  "0"

#elif defined(__fr30__)

/* No pic register.  */

#elif defined(__H8300__) || defined(__H8300H__) || defined(__H8300S__)

/* No pic register.  */

#elif defined(_IBMR2)

/* No pic register.  */

#elif defined(__i386__)

# define PIC_REG  "ebx"

#elif defined(__ia64__)

/* PIC register is r1, but is used even without -fpic.  */

#elif defined(__lm32__)

/* No pic register.  */

#elif defined(__M32R__)

/* No pic register.  */

#elif defined(__m68k__)

# define PIC_REG  "a5"

#elif defined(__mc68hc1x__)

/* No pic register.  */

#elif defined(__mcore__)

/* No pic register.  */

#elif defined(__mips__)

/* PIC register is $28, but is used even without -fpic.  */

#elif defined(__MMIX__)

/* No pic register.  */

#elif defined(__mn10300__)

/* No pic register.  */

#elif defined(__moxie__)

/* No pic register.  */

#elif defined(__hppa__)

/* PIC register is %r27 or %r19, but is used even without -fpic.  */

#elif defined(__pdp11__)

/* No pic register.  */

#elif defined(__powerpc__) || defined(__PPC__) || defined(__POWERPC__) || defined (__ppc)

# ifdef __MACH__

#  define PIC_REG  "31"

# else

#  define PIC_REG  "30"

# endif

#elif defined(__s390__)

# define PIC_REG  "12"

#elif defined(__sparc__)

# define PIC_REG  "l7"

#elif defined(__v850)

/* No pic register.  */

#elif defined(__vax__)

/* No pic register.  */

#elif defined(__xstormy16__)

/* No pic register.  */

#elif defined(__XTENSA__)

/* No pic register.  */

#elif defined(__sh__)

# define PIC_REG  "r12"

#elif defined(__x86_64__)

/* No pic register.  */

#elif defined(__m32c__)

/* No pic register.  */

#elif defined(__SPU__)

#  define PIC_REG  "126"

#elif defined (__frv__)

# ifdef __FRV_FDPIC__

#  define PIC_REG "gr15"

# else

#  define PIC_REG "gr17"

#endif

#else

# error "Modify the test for your target."

#endif

#if defined PIC_REG && !defined __PIC__ && !defined __pic__

register void *reg __asm__(PIC_REG);

#else

/* We really need a global register variable set to the PIC register

   to expose the bug.  Oh well, let the test case not fail.  */

static void *reg;

#endif

void * __attribute__((noinline))

dummy (void *x)

{

  return x;

}

void

f (void)

{

  goto *dummy (&&bar);

  for (;;)

    {

    foo:

      reg = (void *) 1;

      if (!reg)

        goto baz;

      reg = &&foo;

    }

 bar:

 baz:

  reg = 0;

}

int

main()

{

  void *old_reg = reg;

  reg = (void *) 1;

  f ();

  /* Additionally test that the prologue/epilogue properly does *not*

     save and restore global registers.  Not possible when the PIC

     register is in a register window, of course.  On Darwin, you can't

     call library routines from non-PIC code.  */

#if !defined (__sparc__) && !defined(__MACH__)

  if (reg)

    abort ();

#endif

  reg = old_reg;

  return 0;

}