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* [glibc] Benchtests: Remove simple_str(r)chr
@ 2023-03-08 18:47 Wilco Dijkstra
0 siblings, 0 replies; only message in thread
From: Wilco Dijkstra @ 2023-03-08 18:47 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=10f980d31e3d65c4c5bfafd176e7e1db92e2babe
commit 10f980d31e3d65c4c5bfafd176e7e1db92e2babe
Author: Wilco Dijkstra <wilco.dijkstra@arm.com>
Date: Fri Mar 3 16:10:55 2023 +0000
Benchtests: Remove simple_str(r)chr
Instead of benchmarking slow byte oriented loops, include the optimized generic
strchr and strrchr implementation. Adjust iteration count to reduce benchmark
time.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diff:
---
benchtests/bench-strchr.c | 38 +++++++++++++++++++++++---------------
benchtests/bench-strrchr.c | 31 +++++++++++++++----------------
2 files changed, 38 insertions(+), 31 deletions(-)
diff --git a/benchtests/bench-strchr.c b/benchtests/bench-strchr.c
index 420930d558..116ec19760 100644
--- a/benchtests/bench-strchr.c
+++ b/benchtests/bench-strchr.c
@@ -39,7 +39,6 @@
# ifdef USE_FOR_STRCHRNUL
# undef STRCHR
# define STRCHR strchrnul
-# define simple_STRCHR simple_STRCHRNUL
# endif /* !USE_FOR_STRCHRNUL */
# define MIDDLE_CHAR 127
# define SMALL_CHAR 23
@@ -47,7 +46,6 @@
# ifdef USE_FOR_STRCHRNUL
# undef STRCHR
# define STRCHR wcschrnul
-# define simple_STRCHR simple_WCSCHRNUL
# endif /* !USE_FOR_STRCHRNUL */
# define MIDDLE_CHAR 1121
# define SMALL_CHAR 851
@@ -67,18 +65,19 @@
typedef CHAR *(*proto_t) (const CHAR *, int);
-CHAR *
-simple_STRCHR (const CHAR *s, int c)
-{
- for (; *s != (CHAR) c; ++s)
- if (*s == '\0')
- return NULLRET ((CHAR *) s);
- return (CHAR *) s;
-}
-
-IMPL (simple_STRCHR, 0)
IMPL (STRCHR, 1)
+#ifndef WIDE
+char *generic_strchr (const char *, int);
+char *generic_strchrnul (const char *, int);
+
+# ifndef USE_FOR_STRCHRNUL
+IMPL (generic_strchr, 0)
+# else
+IMPL (generic_strchrnul, 0)
+# endif
+#endif
+
#ifndef USE_FOR_STRCHRNUL
/* Random benchmarks for strchr (if return is CHAR or NULL). The
rational for the benchmark is returning null/char can be done with
@@ -97,7 +96,7 @@ static void __attribute__ ((noinline, noclone))
do_one_rand_plus_branch_test (json_ctx_t *json_ctx, impl_t *impl,
const CHAR *s, const CHAR *c)
{
- size_t i, iters = INNER_LOOP_ITERS_LARGE;
+ size_t i, iters = INNER_LOOP_ITERS8;
int must_execute = 0;
timing_t start, stop, cur;
TIMING_NOW (start);
@@ -122,7 +121,7 @@ static void __attribute__ ((noinline, noclone))
do_one_rand_test (json_ctx_t *json_ctx, impl_t *impl, const CHAR *s,
const CHAR *c)
{
- size_t i, iters = INNER_LOOP_ITERS_LARGE;
+ size_t i, iters = INNER_LOOP_ITERS8;
timing_t start, stop, cur;
TIMING_NOW (start);
for (i = 0; i < iters; ++i)
@@ -210,7 +209,7 @@ static void
do_one_test (json_ctx_t *json_ctx, impl_t *impl, const CHAR *s, int c,
const CHAR *exp_res)
{
- size_t i, iters = INNER_LOOP_ITERS_LARGE;
+ size_t i, iters = INNER_LOOP_ITERS8;
timing_t start, stop, cur;
const CHAR *res = CALL (impl, s, c);
if (res != exp_res)
@@ -401,3 +400,12 @@ test_main (void)
}
#include <support/test-driver.c>
+
+#ifndef WIDE
+# undef STRCHRNUL
+# define STRCHRNUL generic_strchrnul
+# undef STRCHR
+# define STRCHR generic_strchr
+# include <string/strchrnul.c>
+# include <string/strchr.c>
+#endif
diff --git a/benchtests/bench-strrchr.c b/benchtests/bench-strrchr.c
index a33a657a27..f846797770 100644
--- a/benchtests/bench-strrchr.c
+++ b/benchtests/bench-strrchr.c
@@ -28,30 +28,20 @@
#define BIG_CHAR MAX_CHAR
#ifdef WIDE
-# define SIMPLE_STRRCHR simple_wcsrchr
# define SMALL_CHAR 1273
#else
-# define SIMPLE_STRRCHR simple_strrchr
# define SMALL_CHAR 127
-#endif
-typedef CHAR *(*proto_t) (const CHAR *, int);
-CHAR *SIMPLE_STRRCHR (const CHAR *, int);
+char *
+generic_strrchr (const char *, int);
-IMPL (SIMPLE_STRRCHR, 0)
-IMPL (STRRCHR, 1)
+IMPL (generic_strrchr, 0)
-CHAR *
-SIMPLE_STRRCHR (const CHAR *s, int c)
-{
- const CHAR *ret = NULL;
+#endif
- for (; *s != '\0'; ++s)
- if (*s == (CHAR) c)
- ret = s;
+typedef CHAR *(*proto_t) (const CHAR *, int);
- return (CHAR *) (c == '\0' ? s : ret);
-}
+IMPL (STRRCHR, 1)
static void
do_one_test (json_ctx_t *json_ctx, impl_t *impl, const CHAR *s, int c,
@@ -237,3 +227,12 @@ test_main (void)
}
#include <support/test-driver.c>
+
+#define weak_alias(X,Y)
+#define libc_hidden_builtin_def(X)
+#ifndef WIDE
+# undef STRRCHR
+# define STRRCHR generic_strrchr
+# define __memrchr memrchr
+# include <string/strrchr.c>
+#endif
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2023-03-08 18:47 [glibc] Benchtests: Remove simple_str(r)chr Wilco Dijkstra
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