benchtests: Use "=" instead of ":=" [BZ #28970]

[platform/upstream/glibc.git] / benchtests / bench-memcmp.c

diff --git a/benchtests/bench-memcmp.c b/benchtests/bench-memcmp.c
index eb0f94a..d64eaa9 100644 (file)
--- a/benchtests/bench-memcmp.c
+++ b/benchtests/bench-memcmp.c
@@ -1,5 +1,5 @@
 /* Measure memcmp functions.
-   Copyright (C) 2013-2021 Free Software Foundation, Inc.
+   Copyright (C) 2013-2022 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -17,17 +17,21 @@
    <https://www.gnu.org/licenses/>.  */
 
 #define TEST_MAIN
-#ifdef WIDE
+#ifdef TEST_MEMCMPEQ
+# define TEST_NAME "__memcmpeq"
+# define SIMPLE_MEMCMP simple_memcmpeq
+#elif defined WIDE
 # define TEST_NAME "wmemcmp"
+# define SIMPLE_MEMCMP simple_wmemcmp
 #else
 # define TEST_NAME "memcmp"
+# define SIMPLE_MEMCMP simple_memcmp
 #endif
 #include "bench-string.h"
 #ifdef WIDE
 
-# define SIMPLE_MEMCMP simple_wmemcmp
 int
-simple_wmemcmp (const wchar_t *s1, const wchar_t *s2, size_t n)
+SIMPLE_MEMCMP (const wchar_t *s1, const wchar_t *s2, size_t n)
 {
   int ret = 0;
   /* Warning!
@@ -40,10 +44,8 @@ simple_wmemcmp (const wchar_t *s1, const wchar_t *s2, size_t n)
 #else
 # include <limits.h>
 
-# define SIMPLE_MEMCMP simple_memcmp
-
 int
-simple_memcmp (const char *s1, const char *s2, size_t n)
+SIMPLE_MEMCMP (const char *s1, const char *s2, size_t n)
 {
   int ret = 0;
 
@@ -63,7 +65,7 @@ static void
 do_one_test (json_ctx_t *json_ctx, impl_t *impl, const CHAR *s1,
             const CHAR *s2, size_t len, int exp_result)
 {
-  size_t i, iters = INNER_LOOP_ITERS8;
+  size_t i, iters = INNER_LOOP_ITERS_LARGE;
   timing_t start, stop, cur;
 
   TIMING_NOW (start);
@@ -88,11 +90,11 @@ do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len,
   if (len == 0)
     return;
 
-  align1 &= 63;
+  align1 &= (4096 - CHARBYTES);
   if (align1 + (len + 1) * CHARBYTES >= page_size)
     return;
 
-  align2 &= 63;
+  align2 &= (4096 - CHARBYTES);
   if (align2 + (len + 1) * CHARBYTES >= page_size)
     return;
 
@@ -100,22 +102,22 @@ do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len,
   json_attr_uint (json_ctx, "length", (double) len);
   json_attr_uint (json_ctx, "align1", (double) align1);
   json_attr_uint (json_ctx, "align2", (double) align2);
+  json_attr_uint (json_ctx, "result", (double) exp_result);
   json_array_begin (json_ctx, "timings");
 
-  FOR_EACH_IMPL (impl, 0)
-    {
-      s1 = (CHAR *) (buf1 + align1);
-      s2 = (CHAR *) (buf2 + align2);
+  s1 = (CHAR *)(buf1 + align1);
+  s2 = (CHAR *)(buf2 + align2);
 
-      for (i = 0; i < len; i++)
-       s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % MAX_CHAR;
+  for (i = 0; i < len; i++)
+    s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % MAX_CHAR;
 
-      s1[len] = align1;
-      s2[len] = align2;
-      s2[len - 1] -= exp_result;
+  s1[len] = align1;
+  s2[len] = align2;
+  s2[len - 1] -= exp_result;
 
+  FOR_EACH_IMPL (impl, 0)
+    {
       do_one_test (json_ctx, impl, s1, s2, len, exp_result);
-      alloc_bufs ();
     }
 
   json_array_end (json_ctx);
@@ -145,18 +147,31 @@ test_main (void)
   json_array_end (&json_ctx);
 
   json_array_begin (&json_ctx, "results");
-  for (i = 1; i < 16; ++i)
+  for (i = 1; i < 32; ++i)
     {
       do_test (&json_ctx, i * CHARBYTES, i * CHARBYTES, i, 0);
       do_test (&json_ctx, i * CHARBYTES, i * CHARBYTES, i, 1);
       do_test (&json_ctx, i * CHARBYTES, i * CHARBYTES, i, -1);
     }
 
-  for (i = 0; i < 16; ++i)
+  for (i = 0; i < 32; ++i)
     {
       do_test (&json_ctx, 0, 0, i, 0);
       do_test (&json_ctx, 0, 0, i, 1);
       do_test (&json_ctx, 0, 0, i, -1);
+      do_test (&json_ctx, 4096 - i, 0, i, 0);
+      do_test (&json_ctx, 4096 - i, 0, i, 1);
+      do_test (&json_ctx, 4096 - i, 0, i, -1);
+    }
+
+  for (i = 33; i < 385; i += 32)
+    {
+      do_test (&json_ctx, 0, 0, i, 0);
+      do_test (&json_ctx, 0, 0, i, 1);
+      do_test (&json_ctx, 0, 0, i, -1);
+      do_test (&json_ctx, i, 0, i, 0);
+      do_test (&json_ctx, 0, i, i, 1);
+      do_test (&json_ctx, i, i, i, -1);
     }
 
   for (i = 1; i < 10; ++i)
@@ -164,13 +179,19 @@ test_main (void)
       do_test (&json_ctx, 0, 0, 2 << i, 0);
       do_test (&json_ctx, 0, 0, 2 << i, 1);
       do_test (&json_ctx, 0, 0, 2 << i, -1);
-      do_test (&json_ctx, 0, 0, 16 << i, 0);
       do_test (&json_ctx, (8 - i) * CHARBYTES, (2 * i) * CHARBYTES, 16 << i, 0);
+      do_test (&json_ctx, 0, 0, 16 << i, 0);
       do_test (&json_ctx, 0, 0, 16 << i, 1);
       do_test (&json_ctx, 0, 0, 16 << i, -1);
+      do_test (&json_ctx, i, 0, 2 << i, 0);
+      do_test (&json_ctx, 0, i, 2 << i, 1);
+      do_test (&json_ctx, i, i, 2 << i, -1);
+      do_test (&json_ctx, i, 0, 16 << i, 0);
+      do_test (&json_ctx, 0, i, 16 << i, 1);
+      do_test (&json_ctx, i, i, 16 << i, -1);
     }
 
-  for (i = 1; i < 8; ++i)
+  for (i = 1; i < 10; ++i)
     {
       do_test (&json_ctx, i * CHARBYTES, 2 * (i * CHARBYTES), 8 << i, 0);
       do_test (&json_ctx, i * CHARBYTES, 2 * (i * CHARBYTES), 8 << i, 1);