Viewing file:  strlenopt-28.c (1.04 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-options "-O2 -fdump-tree-strlen" } */
#include "strlenopt.h"
volatile int v;
size_t
f1 (void)
{
char a[30];
v += 1;
memcpy (a, "1234567", 8);
memcpy (a + 7, "89abcdefg", 10);
memcpy (a + 16, "h", 2);
return strlen (a); // This strlen should be optimized into 17.
}
size_t
f2 (void)
{
char a[30];
v += 2;
strcpy (a, "1234567");
strcpy (a + 7, "89abcdefg");
strcpy (a + 16, "h");
return strlen (a); // This strlen should be optimized into 17.
}
size_t
f3 (char *a)
{
v += 3;
memcpy (a, "1234567", 8);
memcpy (a + 7, "89abcdefg", 10);
memcpy (a + 16, "h", 2);
return strlen (a); // This strlen should be optimized into 17.
}
size_t
f4 (char *a)
{
v += 4;
strcpy (a, "1234567");
strcpy (a + 7, "89abcdefg");
strcpy (a + 16, "h");
return strlen (a); // This strlen should be optimized into 17.
}
int
main ()
{
char a[30];
if (f1 () != 17 || f2 () != 17 || f3 (a) != 17 || f4 (a) != 17)
abort ();
return 0;
}
/* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen1" } } */
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