| /* { 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" } } */ |