Subversion Repositories openrisc_2011-10-31

/* PR middle-end/18548 */

/* Test case reduced by Andrew Pinski <pinskia@physics.uc.edu> */

/* { dg-do run } */

/* { dg-options "-O1 " } */

/* Option -fno-tree-lrs removed By Andrew MacLeod since it is no longer

   supported in the compiler beginning with GCC 4.3.  */

/* m32c has varying sized pointers */

/* { dg-skip-if "" { "m32c-*-*" } { "*" } { "-mcpu=m32c" "-mcpu=m32cm" } } */

/* Kludge to make it signed. */

#define unsigned signed

__extension__ typedef __SIZE_TYPE__ ssize_t;

#undef unsigned

extern void abort (void);

ssize_t fff[10];

void f(ssize_t a, ssize_t b)

{

  ssize_t crcc = b;

  ssize_t d = *((ssize_t*)(a+1));

  int i;

  a = d >= b? d:b;

  for(i=0;i<10;i++)

   fff[i] = a;

}

/* The variable a cannot be a local variable as we get better aliasing

   now and decide that the store to a is dead.  The better aliasing comes

   from better representation of pointer arithmetic. */

ssize_t a = 10;

int main(void)

{

  int i;

  f((ssize_t)(&a)-1,0);

  for(i = 0;i<10;i++)

   if (fff[i]!=10)

    abort ();

  return 0;

}