1 /* { dg-do run } */ 2 /* { dg-options "-O2 -fdump-tree-strlen" } */ 3 4 #include "strlenopt.h" 5 6 __attribute__((noinline, noclone)) size_t fn1(char * p,const char * r)7fn1 (char *p, const char *r) 8 { 9 size_t len1 = strlen (r); 10 char *q = strchr (p, '\0'); 11 *q = '\0'; 12 return len1 - strlen (r); // This strlen should be optimized into len1. 13 } 14 15 int main(void)16main (void) 17 { 18 char p[] = "foobar"; 19 const char *volatile q = "xyzzy"; 20 return fn1 (p, q); 21 } 22 23 /* { dg-final { scan-tree-dump-times "strlen \\(" 2 "strlen1" } } */ 24 /* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen1" } } */ 25