New comprehensive test for wcscmp

3 files changed, 160 insertions, 24 deletions

diff --git a/string/Makefile b/string/Makefile
index f76758f49e..459b2a7f49 100644
--- a/string/Makefile
+++ b/string/Makefile
@@ -46,7 +46,7 @@ routines	:= strcat strchr strcmp strcoll strcpy strcspn		\
 # for -fbounded-pointer compiles.  Glibc uses memchr for explicit checks.
 o-objects.ob	:= memcpy.o memset.o memchr.o
 
-strop-tests	:= memchr memcmp memcpy memmove mempcpy memset memccpy	\
+strop-tests	:=  wcscmp memchr memcmp memcpy memmove mempcpy memset memccpy	\
 		   stpcpy stpncpy strcat strchr strcmp strcpy strcspn	\
 		   strlen strncmp strncpy strpbrk strrchr strspn memmem	\
 		   strstr strcasestr strnlen strcasecmp strncasecmp	\
diff --git a/string/test-strcmp.c b/string/test-strcmp.c
index 769e9828fd..908dc27129 100644
--- a/string/test-strcmp.c
+++ b/string/test-strcmp.c
@@ -1,7 +1,8 @@
-/* Test and measure strcmp functions.
-   Copyright (C) 1999, 2002, 2003, 2005 Free Software Foundation, Inc.
+/* Test and measure STRCMP functions.
+   Copyright (C) 1999, 2002, 2003, 2005, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Jakub Jelinek <jakub@redhat.com>, 1999.
+   Added wcscmp support by Liubov Dmitrieva <liubov.dmitrieva@gmail.com>, 2011.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -21,39 +22,63 @@
 #define TEST_MAIN
 #include "test-string.h"
 
+#ifdef WIDE
+# include <inttypes.h>
+# include <wchar.h>
+#endif
+
+#ifdef WIDE
+# define L(str) L##str
+# define STRCMP wcscmp
+# define STRCPY wcscpy
+# define STRLEN wcslen
+# define SIMPLE_STRCMP simple_wcscmp
+# define STUPID_STRCMP stupid_wcscmp
+typedef uint32_t unsigned_element_type;
+typedef uint32_t element_type;
+typedef int (*proto_t) (const uint32_t *, const uint32_t *);
+#else
+# define L(str) str
+# define STRCMP strcmp
+# define STRCPY strcpy
+# define STRLEN strlen
+# define SIMPLE_STRCMP simple_strcmp
+# define STUPID_STRCMP stupid_strcmp
+typedef unsigned char unsigned_element_type;
+typedef char element_type;
 typedef int (*proto_t) (const char *, const char *);
-int simple_strcmp (const char *, const char *);
-int stupid_strcmp (const char *, const char *);
-
-IMPL (stupid_strcmp, 0)
-IMPL (simple_strcmp, 0)
-IMPL (strcmp, 1)
+#endif
 
 int
-simple_strcmp (const char *s1, const char *s2)
+SIMPLE_STRCMP (const unsigned_element_type *s1, const unsigned_element_type *s2)
 {
   int ret;
 
-  while ((ret = *(unsigned char *) s1 - *(unsigned char *) s2++) == 0
-	 && *s1++);
+  while ((ret = *s1 - *s2++) == 0 && *s1++);
   return ret;
 }
 
 int
-stupid_strcmp (const char *s1, const char *s2)
+STUPID_STRCMP (const unsigned_element_type *s1, const unsigned_element_type *s2)
 {
-  size_t ns1 = strlen (s1) + 1, ns2 = strlen (s2) + 1;
+  size_t ns1 = STRLEN (s1) + 1, ns2 = STRLEN (s2) + 1;
   size_t n = ns1 < ns2 ? ns1 : ns2;
   int ret = 0;
 
   while (n--)
-    if ((ret = *(unsigned char *) s1++ - *(unsigned char *) s2++) != 0)
+    if ((ret = *s1++ - *s2++) != 0)
       break;
   return ret;
 }
 
-static void
-do_one_test (impl_t *impl, const char *s1, const char *s2, int exp_result)
+IMPL (STUPID_STRCMP, 1)
+IMPL (SIMPLE_STRCMP, 1)
+IMPL (STRCMP, 1)
+
+static int
+check_result (impl_t *impl,
+             const element_type *s1, const element_type *s2,
+	     int exp_result)
 {
   int result = CALL (impl, s1, s2);
   if ((exp_result == 0 && result != 0)
@@ -63,9 +88,20 @@ do_one_test (impl_t *impl, const char *s1, const char *s2, int exp_result)
       error (0, 0, "Wrong result in function %s %d %d", impl->name,
 	     result, exp_result);
       ret = 1;
-      return;
+      return -1;
     }
 
+  return 0;
+}
+
+static void
+do_one_test (impl_t *impl,
+             const element_type *s1, const element_type *s2,
+	     int exp_result)
+{
+  if (check_result (impl, s1, s2, exp_result) < 0)
+    return;
+
   if (HP_TIMING_AVAIL)
     {
       hp_timing_t start __attribute ((unused));
@@ -90,11 +126,13 @@ do_test (size_t align1, size_t align2, size_t len, int max_char,
 	 int exp_result)
 {
   size_t i;
-  char *s1, *s2;
+
+  element_type *s1, *s2;
 
   if (len == 0)
     return;
 
+#ifndef WIDE
   align1 &= 7;
   if (align1 + len + 1 >= page_size)
     return;
@@ -106,8 +144,29 @@ do_test (size_t align1, size_t align2, size_t len, int max_char,
   s1 = (char *) (buf1 + align1);
   s2 = (char *) (buf2 + align2);
 
+#else
+  align1 &= 63;
+  if (align1 + len * 4 + 4 >= page_size)
+    return;
+
+  align2 &= 63;
+  if (align2 + len * 4 + 4 >= page_size)
+    return;
+
+  /* Put them close to the end of page.  */
+  i = align1 + 4 * len + 8;
+  s1 = (uint32_t *) (buf1 + ((page_size - i) / 16 * 16) + align1);
+  i = align2 + 4 * len + 8;
+  s2 = (uint32_t *) (buf2 + ((page_size - i) / 16 * 16)  + align2);
+
+#endif
+
   for (i = 0; i < len; i++)
+#ifndef WIDE
     s1[i] = s2[i] = 1 + 23 * i % max_char;
+#else
+    s1[i] = s2[i] = 1 + 1023 * i % max_char;
+#endif
 
   s1[len] = s2[len] = 0;
   s1[len + 1] = 23;
@@ -129,11 +188,21 @@ do_random_tests (void)
 {
   size_t i, j, n, align1, align2, pos, len1, len2;
   int result;
-  long r;
+  int r;
+
+#ifndef WIDE
   unsigned char *p1 = buf1 + page_size - 512;
   unsigned char *p2 = buf2 + page_size - 512;
-
   for (n = 0; n < ITERATIONS; n++)
+#else
+  for (size_t a = 0; a < 4; a++)
+    for (size_t b = 0; b < 4; b++)
+    {
+      uint32_t *p1 = (uint32_t *) (buf1 + page_size - 512 * 4 - a);
+      uint32_t *p2 = (uint32_t *) (buf2 + page_size - 512 * 4 - b);
+
+    for (n = 0; n < ITERATIONS / 2; n++)
+#endif          
     {
       align1 = random () & 31;
       if (random () & 1)
@@ -178,7 +247,11 @@ do_random_tests (void)
 	}
 
       result = 0;
+#ifndef WIDE
       memcpy (p2 + align2, p1 + align1, pos);
+#else
+      memcpy (p2 + align2, p1 + align1, 4 * pos);
+#endif
       if (pos < len1)
 	{
 	  if (p2[align2 + pos] == p1[align1 + pos])
@@ -198,7 +271,7 @@ do_random_tests (void)
 
       FOR_EACH_IMPL (impl, 1)
 	{
-	  r = CALL (impl, (char *) (p1 + align1), (char *) (p2 + align2));
+	  r = CALL (impl, p1 + align1, p2 + align2);
 	  /* Test whether on 64-bit architectures where ABI requires
 	     callee to promote has the promotion been done.  */
 	  asm ("" : "=g" (r) : "0" (r));
@@ -206,26 +279,55 @@ do_random_tests (void)
 	      || (r < 0 && result >= 0)
 	      || (r > 0 && result <= 0))
 	    {
-	      error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd, %zd, %zd) %ld != %d, p1 %p p2 %p",
-		     n, impl->name, align1, align2, len1, len2, pos, r, result, p1, p2);
+	      error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd, %zd, %zd) %d != %d, p1 %p p2 %p",
+		     n, impl->name, (size_t) (p1 + align1) & 63, (size_t) (p1 + align2) & 63, len1, len2, pos, r, result, p1, p2);
 	      ret = 1;
 	    }
 	}
     }
+#ifdef WIDE
+  }
+#endif
 }
 
+static void
+check (void)
+{
+  const element_type *s1 = (element_type *) (buf1 + 0xb2c);
+  const element_type *s2 = (element_type *) (buf1 + 0xfd8);
+
+  size_t i1, i2, l1, l2;
+  int exp_result;
+
+  STRCPY(s1, L"abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrs");
+  STRCPY(s2, L"abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkLMNOPQRSTUV");
+
+  l1 = STRLEN (s1);
+  l2 = STRLEN (s2);
+  for (i1 = 0; i1 < l1; i1++)
+    for (i2 = 0; i2 < l2; i2++)
+      {
+	exp_result = SIMPLE_STRCMP (s1 + i1, s2 + i2);
+	FOR_EACH_IMPL (impl, 0)
+	  check_result (impl, s1 + i1, s2 + i2, exp_result);
+      }
+}
+
+
 int
 test_main (void)
 {
   size_t i;
 
   test_init ();
+  check();
 
   printf ("%23s", "");
   FOR_EACH_IMPL (impl, 0)
     printf ("\t%s", impl->name);
   putchar ('\n');
 
+#ifndef WIDE
   for (i = 1; i < 16; ++i)
     {
       do_test (i, i, i, 127, 0);
@@ -253,6 +355,38 @@ test_main (void)
       do_test (2 * i, i, 8 << i, 254, -1);
     }
 
+#else
+  for (i = 1; i < 32; ++i)
+    {
+      do_test (i, i, i, 127, 0);
+      do_test (i, i, i, 127, 1);
+      do_test (i, i, i, 127, -1);
+    }
+
+  for (i = 1; i < 12; ++i)
+    {
+      do_test (0, 0, 2 << i, 127, 0);
+      do_test (0, 0, 2 << i, 10000, 0);
+      do_test (0, 0, 2 << i, 127, 1);
+      do_test (0, 0, 2 << i, 10000, 1);
+      do_test (0, 0, 2 << i, 127, -1);
+      do_test (0, 0, 2 << i, 10000, -1);
+      do_test (0, 4 * i, 2 << i, 127, 1);
+      do_test (4 * i, 4 * i + 4, 2 << i, 10000, 1);
+    }
+
+  for (i = 1; i < 9; ++i)
+    {
+      do_test (i, 2 * i, 8 << i, 10000, 0);
+      do_test (8 * i, 4 * i, 8 << i, 20000, 0);
+      do_test (i, 2 * i, 8 << i, 30000, 1);
+      do_test (2 * i, i, 8 << i, 10000, 1);
+      do_test (4 * i, 4 * i + 4, 8 << i, 20000, -1);
+      do_test (2 * i, i, 8 << i, 30000, -1);
+      do_test (4 * i + 4, 4 * i, 8 << i, 10000, 1);
+    }
+#endif
+
   do_random_tests ();
   return ret;
 }
diff --git a/string/test-wcscmp.c b/string/test-wcscmp.c
new file mode 100644
index 0000000000..ac98e6d1d8
--- /dev/null
+++ b/string/test-wcscmp.c
@@ -0,0 +1,2 @@
+#define WIDE 1
+#include "test-strcmp.c"