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/* Ensure mempcpy is "optimized" into memcpy followed by addition. */
/* { dg-do compile } */
/* { dg-options "-O2" } */
char *buffer;
char *test;
#define SIZE 100
char *
__attribute__((noinline))
my_memcpy (char *d, char *s, unsigned l)
{
return __builtin_memcpy (d, s, l);
}
char *
__attribute__((noinline))
my_mempcpy (char *d, char *s, unsigned l)
{
return __builtin_mempcpy (d, s, l);
}
void
run_test (char *d, char *s, unsigned l)
{
char *r = my_mempcpy (d, s, l);
if (r != d + l)
__builtin_abort ();
r = my_memcpy (d, s, l);
if (r != d)
__builtin_abort ();
}
int
main (void)
{
const char* const foo = "hello world";
unsigned l = __builtin_strlen (foo) + 1;
buffer = __builtin_malloc (SIZE);
__builtin_memcpy (buffer, foo, l);
test = __builtin_malloc (SIZE);
run_test (test, buffer, l);
return 0;
}
/* { dg-final { scan-assembler-not "\<mempcpy\>" } } */
/* { dg-final { scan-assembler "memcpy" } } */
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