Viewing file:  strlenopt-32.c (3.73 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-options "-O2 -fdump-tree-strlen" } */
#include "strlenopt.h"
char temp[30];
volatile int v;
size_t __attribute__ ((noinline, noclone))
f1 (void)
{
char a[30];
v += 1;
memcpy (a, "1234567", 7);
memcpy (a + 7, "89abcdefg", 9);
memcpy (a + 16, "h", 2);
return strlen (a); // This strlen should be optimized into 17.
}
size_t __attribute__ ((noinline, noclone))
f2 (char *a)
{
v += 2;
memcpy (a, "1234567", 7);
memcpy (a + 7, "89abcdefg", 9);
memcpy (a + 16, "h", 2);
return strlen (a); // This strlen should be optimized into 17.
}
size_t __attribute__ ((noinline, noclone))
f3 (void)
{
char a[30];
v += 3;
a[0] = '1';
memcpy (a + 1, "2345678", 8);
return strlen (a); // This strlen should be optimized into 8.
}
size_t __attribute__ ((noinline, noclone))
f4 (char *a)
{
v += 4;
a[0] = '1';
memcpy (a + 1, "2345678", 8);
return strlen (a); // This strlen should be optimized into 8.
}
size_t __attribute__ ((noinline, noclone))
f5 (void)
{
char a[30];
v += 5;
a[0] = '1';
a[1] = '2';
a[2] = '3';
memcpy (a + 3, "456", 3);
a[6] = '7';
a[7] = 0;
return strlen (a); // This strlen should be optimized into 7.
}
size_t __attribute__ ((noinline, noclone))
f6 (char *a)
{
v += 6;
a[0] = '1';
a[1] = '2';
a[2] = '3';
memcpy (a + 3, "456", 3);
a[6] = '7';
a[7] = 0;
return strlen (a); // This strlen should be optimized into 7.
}
size_t __attribute__ ((noinline, noclone))
f7 (void)
{
char a[30];
v += 7;
strcpy (a, "abcde");
int len1 = strlen (a);
a[2] = '_';
int len2 = strlen (a);
return len1 + len2; // This should be optimized into 10.
}
size_t __attribute__ ((noinline, noclone))
f8 (char *a)
{
v += 8;
strcpy (a, "abcde");
int len1 = strlen (a);
a[2] = '_';
int len2 = strlen (a);
return len1 + len2; // This should be optimized into 10.
}
size_t __attribute__ ((noinline, noclone))
f9 (char b)
{
char a[30];
v += 9;
strcpy (a, "foo.bar");
a[4] = b;
a[3] = 0;
return strlen (a); // This should be optimized into 3.
}
size_t __attribute__ ((noinline, noclone))
f10 (char *a, char b)
{
v += 10;
strcpy (a, "foo.bar");
a[4] = b;
a[3] = 0;
return strlen (a); // This should be optimized into 3.
}
size_t __attribute__ ((noinline, noclone))
f11 (void)
{
char a[30];
v += 11;
strcpy (temp, "123456");
memcpy (a, temp, 7);
return strlen (a); // This should be optimized into 6.
}
size_t __attribute__ ((noinline, noclone))
f12 (char *a)
{
v += 12;
strcpy (temp, "123456");
memcpy (a, temp, 7);
return strlen (a); // This should be optimized into 6.
}
size_t __attribute__ ((noinline, noclone))
f13 (void)
{
char a[30];
v += 13;
strcpy (temp, "1234567");
memcpy (a, temp, 7);
a[7] = 0;
return strlen (a); // This should be optimized into 7.
}
size_t __attribute__ ((noinline, noclone))
f14 (char *a)
{
v += 14;
strcpy (temp, "1234567");
memcpy (a, temp, 7);
a[7] = 0;
return strlen (a); // This should be optimized into 7.
}
size_t __attribute__ ((noinline, noclone))
f15 (void)
{
char a[30];
v += 15;
strcpy (temp, "12345679");
memcpy (a, temp, 7);
a[7] = 0;
return strlen (a); // This should be optimized into 7.
}
size_t __attribute__ ((noinline, noclone))
f16 (char *a)
{
v += 16;
strcpy (temp, "123456789");
memcpy (a, temp, 7);
a[7] = 0;
return strlen (a); // This should be optimized into 7.
}
int
main ()
{
char a[30];
if (f1 () != 17 || f2 (a) != 17 || f3 () != 8 || f4 (a) != 8
|| f5 () != 7 || f6 (a) != 7 || f7 () != 10 || f8 (a) != 10
|| f9 ('_') != 3 || f10 (a, '_') != 3 || f11 () != 6 || f12 (a) != 6
|| f13 () != 7 || f14 (a) != 7 || f15 () != 7 || f16 (a) != 7)
abort ();
return 0;
}
/* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen1" } } */
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