Viewing file:  strlenopt-16g.c (1.06 KB) -rw-r--r--
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/* This test needs runtime that provides stpcpy function. */
/* { dg-do run { target *-*-linux* *-*-gnu* *-*-uclinux* } } */
/* { dg-options "-O2 -fdump-tree-strlen" } */
#define USE_GNU
#include "strlenopt.h"
__attribute__((noinline, noclone)) char *
fn1 (char *p, const char *q)
{
/* This strcpy can be optimized into stpcpy. */
strcpy (p, q);
/* And this strchr into the return value from it. */
return strchr (p, '\0');
}
int
main ()
{
char buf[64];
const char *volatile q = "ABCDEFGH";
if (fn1 (buf, q) != buf + 8 || memcmp (buf, "ABCDEFGH", 9) != 0)
abort ();
return 0;
}
/* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen1" } } */
/* { dg-final { scan-tree-dump-times "memcpy \\(" 0 "strlen1" } } */
/* { dg-final { scan-tree-dump-times "mempcpy \\(" 0 "strlen1" } } */
/* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen1" } } */
/* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen1" } } */
/* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen1" } } */
/* { dg-final { scan-tree-dump-times "stpcpy \\(" 1 "strlen1" } } */
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