Subversion Repositories openrisc

/* { dg-do run } */

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

#include "strlenopt.h"

__attribute__((noinline, noclone)) size_t

fn1 (char *p, size_t l)

{

  memcpy (p, "abcdef", l);

  /* This strlen can't be optimized, as l is unknown.  */

  return strlen (p);

}

__attribute__((noinline, noclone)) size_t

fn2 (char *p, const char *q, size_t *lp)

{

  size_t l = strlen (q), l2;

  memcpy (p, q, 7);

  /* This strlen can't be optimized, as l might be bigger than 7.  */

  l2 = strlen (p);

  *lp = l;

  return l2;

}

__attribute__((noinline, noclone)) char *

fn3 (char *p)

{

  *p = 0;

  return p + 1;

}

int

main ()

{

  char buf[64];

  const char *volatile q = "ABCDEFGH";

  const char *volatile q2 = "IJ\0KLMNOPQRS";

  size_t l;

  memset (buf, '\0', sizeof buf);

  memset (buf + 2, 'a', 7);

  if (fn1 (buf, 3) != 9 || memcmp (buf, "abcaaaaaa", 10) != 0)

    abort ();

  if (fn1 (buf, 7) != 6 || memcmp (buf, "abcdef\0aa", 10) != 0)

    abort ();

  if (fn2 (buf, q, &l) != 9 || l != 8 || memcmp (buf, "ABCDEFGaa", 10) != 0)

    abort ();

  if (fn2 (buf, q2, &l) != 2 || l != 2 || memcmp (buf, "IJ\0KLMNaa", 10) != 0)

    abort ();

  if (fn3 (buf) != buf + 1 || memcmp (buf, "\0J\0KLMNaa", 10) != 0)

    abort ();

  return 0;

}

/* { dg-final { scan-tree-dump-times "strlen \\(" 3 "strlen" } } */

/* { dg-final { scan-tree-dump-times "memcpy \\(" 2 "strlen" } } */

/* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen" } } */

/* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen" } } */

/* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen" } } */

/* { dg-final { scan-tree-dump-times "stpcpy \\(" 0 "strlen" } } */

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