Subversion Repositories openrisc_2011-10-31

/* PR c/4389

   This testcase failed because host_integerp (x, 0) was returning

   1 even for constants bigger than 2^31.  It fails under under hppa

   hpux without -mdisable-indexing because the pointer x - 1 is used

   as the base address of an indexed load.  Because the struct A is not

   actually allocated, x - 1 lies in the text segment and this causes

   the wrong space register to be selected for the load.  It fails on

   IA64 hpux in ILP32 mode because extending x - 1 before adding the

   array offset gives a different answer then adding first and then

   extending.  The underlying problem is the same as with hppa, x - 1 is

   not a legal data address.  */

/* { dg-do run } */

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

/* { dg-options "-O2 -mdisable-indexing" { target hppa*-*-hpux* } } */

/* { dg-skip-if "" { "ia64-*-hpux*" } "*" "-mlp64" } */

/* Disable the test entirely for 16-bit targets.  */

#if __INT_MAX__ > 32767

extern void abort (void);

extern void exit (int);

struct A {

  int a[10000][10000];

};

int b[2] = { 213151, 0 };

void foo (struct A *x, int y)

{

  if (x->a[9999][9999] != x->a[y][y])

    abort ();

  if (x->a[9999][9999] != 213151)

    abort ();

}

int main (void)

{

  struct A *x;

  asm ("" : "=r" (x) : "0" (&b[1]));

  foo (x - 1, 9999);

  exit (0);

}

#else

int main () { return 0; }

#endif /* __INT_MAX__ */