Subversion Repositories openrisc_me

/* { dg-do run } */

/* { dg-options "-O2 -fdump-tree-optimized" } */

/* Same test as 990128-1.c.  */

extern int printf (const char *,...);

extern void abort (void);

struct s { struct s *n; } *p;

struct s ss;

#define MAX     10

struct s sss[MAX];

int count = 0;

void sub( struct s *p, struct s **pp );

int look( struct s *p, struct s **pp );

main()

{

    struct s *pp;

    struct s *next;

    int i;

    p = &ss;

    next = p;

    for ( i = 0; i < MAX; i++ ) {

        next->n = &sss[i];

        next = next->n;

    }

    next->n = 0;

    sub( p, &pp );

    if (count != MAX+2)

      abort ();

    return( 0 );

}

void sub( struct s *p, struct s **pp )

{

   for ( ; look( p, pp ); ) {

        if ( p )

            p = p->n;

        else

            break;

   }

}

int look( struct s *p, struct s **pp )

{

    for ( ; p; p = p->n )

        ;

    *pp = p;

    count++;

    return( 1 );

}

/* { dg-final { scan-tree-dump "Cleaned-up latch block of loop with single BB" "optimized" { xfail { *-*-* } } } } */

/* { dg-final { cleanup-tree-dump "optimized" } } */