Viewing file:  strcmpopt_5.c (1.58 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-options "-O2 -fdump-rtl-expand" } */
typedef struct { char s[8]; int x; } S;
__attribute__ ((noinline)) int
f1 (S * s)
{
int result = 0;
result += __builtin_strncmp (s->s, "ab", 2);
result += __builtin_strncmp (s->s, "abc", 3);
return result;
}
__attribute__ ((noinline)) int
f2 (char *p)
{
int result = 0;
result += __builtin_strncmp (p, "ab", 2);
result += __builtin_strncmp (p, "abc", 3);
return result;
}
__attribute__ ((noinline)) int
f3 (S * s)
{
int result = 0;
result += __builtin_strcmp (s->s, "a");
result += __builtin_strcmp (s->s, "ab");
return result;
}
__attribute__ ((noinline)) int
f4 (char *p)
{
int result = 0;
result += __builtin_strcmp (p, "a");
result += __builtin_strcmp (p, "ab");
return result;
}
__attribute__ ((noinline)) int
f5 (S * s)
{
int result = 0;
result += __builtin_memcmp (s->s, "ab", 2);
result += __builtin_memcmp (s->s, "abc", 3);
return result;
}
__attribute__ ((noinline)) int
f6 (char *p)
{
int result = 0;
result += __builtin_memcmp (p, "ab", 2);
result += __builtin_memcmp (p, "abc", 3);
return result;
}
int main (void)
{
S ss = {{'a','b','c'}, 2};
char *s = "abcd";
if (f1 (&ss) != 0 || f2 (s) != 0)
__builtin_abort ();
if (f3 (&ss) <= 0 || f4 (s) <= 0)
__builtin_abort ();
if (f5 (&ss) != 0 || f6 (s) != 0)
__builtin_abort ();
return 0;
}
/* { dg-final { scan-rtl-dump-times "__builtin_strcmp" 0 "expand" } } */
/* { dg-final { scan-rtl-dump-times "__builtin_strncmp" 0 "expand" } } */
/* { dg-final { scan-rtl-dump-times "__builtin_memcmp" 0 "expand" } } */
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