Improve string benchtests

Replace slow byte-oriented tests in several string benchmarks with the
generic implementations from the string/ directory so the comparisons
are more realistic and useful.

	* benchtests/bench-stpcpy.c (SIMPLE_STPCPY): Remove function.
	(generic_stpcpy): New function.
	* benchtests/bench-stpncpy.c (SIMPLE_STPNCPY): Remove function.
	(generic_stpncpy): New function.
	* benchtests/bench-strcat.c (SIMPLE_STRCAT): Remove function.
	(generic_strcat): New function.
	* benchtests/bench-strcpy.c (SIMPLE_STRCPY): Remove function.
	(generic_strcpy): New function.
	* benchtests/bench-strncat.c (SIMPLE_STRNCAT): Remove function.
	(STUPID_STRNCAT): Remove function.
	(generic_strncat): New function.
	* benchtests/bench-strncpy.c (SIMPLE_STRNCPY): Remove function.
	(STUPID_STRNCPY): Remove function.
	(generic_strncpy): New function.
	* benchtests/bench-strnlen.c (SIMPLE_STRNLEN): Remove function.
	(generic_strnlen): New function.
	(memchr_strnlen): New function.
	* benchtests/bench-strlen.c (generic_strlen): Define for WIDE.
	(memchr_strlen): Likewise.

1 files changed, 20 insertions, 11 deletions

diff --git a/benchtests/bench-strnlen.c b/benchtests/bench-strnlen.c
index b9039d5f3f..e9e51b27fc 100644
--- a/benchtests/bench-strnlen.c
+++ b/benchtests/bench-strnlen.c
@@ -21,6 +21,8 @@
 # define TEST_NAME "strnlen"
 #else
 # define TEST_NAME "wcsnlen"
+# define generic_strnlen generic_wcsnlen
+# define memchr_strnlen wcschr_wcsnlen
 #endif /* WIDE */
 #include "bench-string.h"
 
@@ -28,27 +30,24 @@
 
 #ifndef WIDE
 # define MIDDLE_CHAR 127
-# define SIMPLE_STRNLEN simple_strnlen
 #else
 # define MIDDLE_CHAR 1121
-# define SIMPLE_STRNLEN simple_wcsnlen
 #endif /* WIDE */
 
 typedef size_t (*proto_t) (const CHAR *, size_t);
-size_t SIMPLE_STRNLEN (const CHAR *, size_t);
-
-IMPL (SIMPLE_STRNLEN, 0)
-IMPL (STRNLEN, 1)
+size_t generic_strnlen (const CHAR *, size_t);
 
 size_t
-SIMPLE_STRNLEN (const CHAR *s, size_t maxlen)
+memchr_strnlen (const CHAR *s, size_t maxlen)
 {
-  size_t i;
-
-  for (i = 0; i < maxlen && s[i]; ++i);
-  return i;
+  const CHAR *s1 = MEMCHR (s, 0, maxlen);
+  return (s1 == NULL) ? maxlen : s1 - s;
 }
 
+IMPL (STRNLEN, 1)
+IMPL (memchr_strnlen, 0)
+IMPL (generic_strnlen, 0)
+
 static void
 do_one_test (impl_t *impl, const CHAR *s, size_t maxlen, size_t exp_len)
 {
@@ -146,3 +145,13 @@ test_main (void)
 }
 
 #include <support/test-driver.c>
+
+#define libc_hidden_def(X)
+#ifndef WIDE
+# undef STRNLEN
+# define STRNLEN generic_strnlen
+# include <string/strnlen.c>
+#else
+# define WCSNLEN generic_strnlen
+# include <wcsmbs/wcsnlen.c>
+#endif