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/* Copyright (C) 2001 Free Software Foundation.
Ensure that short builtin memcmp are optimized and perform correctly.
On architectures with a cmpstrsi instruction, this test doesn't determine
which optimization is being performed, but it does check for correctness.
Written by Roger Sayle, 12/02/2001. */
extern void abort (void);
typedef __SIZE_TYPE__ size_t;
extern int memcmp (const void *, const void *, size_t);
extern char *strcpy (char *, const char *);
int
main ()
{
char str[8];
strcpy (str, "3141");
if ( memcmp (str, str+2, 0) != 0 )
abort ();
if ( memcmp (str+1, str+3, 0) != 0 )
abort ();
if ( memcmp (str+1, str+3, 1) != 0 )
abort ();
if ( memcmp (str, str+2, 1) >= 0 )
abort ();
if ( memcmp (str+2, str, 1) <= 0 )
abort ();
return 0;
}
#ifdef __OPTIMIZE__
/* When optimizing, all the above cases should be transformed into
something else. So any remaining calls to the original function
should abort. */
__attribute__ ((noinline))
static int
memcmp (const char *p1, const char *p2, size_t len)
{
abort ();
}
#endif
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