Some speed improvements

2 files changed, 31 insertions, 13 deletions

diff --git a/strings/ctype-mb.c b/strings/ctype-mb.c
index d328ebb7a36..aa475e281d0 100644
--- a/strings/ctype-mb.c
+++ b/strings/ctype-mb.c
@@ -24,13 +24,15 @@ void my_caseup_str_mb(CHARSET_INFO * cs, char *str)
 {
   register uint32 l;
   register char *end=str+strlen(str); /* BAR TODO: remove strlen() call */
+  register uchar *map=cs->to_upper;
+  
   while (*str)
   {
     if ((l=my_ismbchar(cs, str,end)))
       str+=l;
     else
     { 
-      *str=(char)my_toupper(cs,(uchar)*str);
+      *str=(char) map[(uchar)*str];
       str++;
     }
   }
@@ -40,13 +42,15 @@ void my_casedn_str_mb(CHARSET_INFO * cs, char *str)
 {
   register uint32 l;
   register char *end=str+strlen(str);
+  register uchar *map=cs->to_lower;
+  
   while (*str)
   {
     if ((l=my_ismbchar(cs, str,end)))
       str+=l;
     else
     {
-      *str=(char)my_tolower(cs,(uchar)*str);
+      *str=(char) map[(uchar)*str];
       str++;
     }
   }
@@ -56,13 +60,15 @@ void my_caseup_mb(CHARSET_INFO * cs, char *str, uint length)
 {
   register uint32 l;
   register char *end=str+length;
+  register uchar *map=cs->to_upper;
+  
   while (str<end)
   {
     if ((l=my_ismbchar(cs, str,end)))
       str+=l;
     else 
     {
-      *str=(char)my_toupper(cs,(uchar)*str);
+      *str=(char) map[(uchar)*str];
       str++;
     }
   }
@@ -72,13 +78,15 @@ void my_casedn_mb(CHARSET_INFO * cs, char *str, uint length)
 {
   register uint32 l;
   register char *end=str+length;
+  register uchar *map=cs->to_lower;
+  
   while (str<end)
   {
     if ((l=my_ismbchar(cs, str,end)))
       str+=l;
     else
     {
-      *str=(char)my_tolower(cs,(uchar)*str);
+      *str=(char) map[(uchar)*str];
       str++;
     }
   }
@@ -88,6 +96,8 @@ int my_strcasecmp_mb(CHARSET_INFO * cs,const char *s, const char *t)
 {
   register uint32 l;
   register const char *end=s+strlen(s);
+  register uchar *map=cs->to_upper;
+  
   while (s<end)
   {
     if ((l=my_ismbchar(cs, s,end)))
@@ -98,7 +108,7 @@ int my_strcasecmp_mb(CHARSET_INFO * cs,const char *s, const char *t)
     }
     else if (my_ismbhead(cs, *t)) 
       return 1;
-    else if (my_toupper(cs,(uchar) *s++) != my_toupper(cs,(uchar) *t++))
+    else if (map[(uchar) *s++] != map[(uchar) *t++])
       return 1;
   }
   return *t;
@@ -110,6 +120,8 @@ int my_strncasecmp_mb(CHARSET_INFO * cs,
 {
   register uint32 l;
   register const char *end=s+len;
+  register uchar *map=cs->to_upper;
+  
   while (s<end)
   {
     if ((l=my_ismbchar(cs, s,end)))
@@ -120,7 +132,7 @@ int my_strncasecmp_mb(CHARSET_INFO * cs,
     }
     else if (my_ismbhead(cs, *t)) 
       return 1;
-    else if (my_toupper(cs,(uchar) *s++) != my_toupper(cs,(uchar) *t++)) 
+    else if (map[(uchar) *s++] != map[(uchar) *t++]) 
       return 1;
   }
   return 0;
diff --git a/strings/ctype-simple.c b/strings/ctype-simple.c
index 52c66f0ad4e..19989afea60 100644
--- a/strings/ctype-simple.c
+++ b/strings/ctype-simple.c
@@ -46,43 +46,49 @@ int my_strnncoll_simple(CHARSET_INFO * cs,const char *s, uint slen,
 
 void my_caseup_str_8bit(CHARSET_INFO * cs,char *str)
 {
-  while ((*str = (char) my_toupper(cs,(uchar) *str)) != 0)
+  register uchar *map=cs->to_upper;
+  while ((*str = (char) map[(uchar) *str]) != 0)
     str++;
 }
 
 
 void my_casedn_str_8bit(CHARSET_INFO * cs,char *str)
 {
-  while ((*str = (char) my_tolower(cs,(uchar)*str)) != 0)
+  register uchar *map=cs->to_lower;
+  while ((*str = (char) map[(uchar)*str]) != 0)
     str++;
 }
 
 
 void my_caseup_8bit(CHARSET_INFO * cs, char *str, uint length)
 {
+  register uchar *map=cs->to_upper;
   for ( ; length>0 ; length--, str++)
-    *str= (char) my_toupper(cs,(uchar)*str);
+    *str= (char) map[(uchar)*str];
 }
 
 void my_casedn_8bit(CHARSET_INFO * cs, char *str, uint length)
 {
+  register uchar *map=cs->to_lower;
   for ( ; length>0 ; length--, str++)
-    *str= (char)my_tolower(cs,(uchar) *str);
+    *str= (char) map[(uchar) *str];
 }
 
 
 int my_strcasecmp_8bit(CHARSET_INFO * cs,const char *s, const char *t)
 {
-  while (my_toupper(cs,(uchar) *s) == my_toupper(cs,(uchar) *t++))
+  register uchar *map=cs->to_upper;
+  while (map[(uchar) *s] == map[(uchar) *t++])
     if (!*s++) return 0;
-  return ((int) my_toupper(cs,(uchar) s[0]) - (int) my_toupper(cs,(uchar) t[-1]));
+  return ((int) map[(uchar) s[0]] - (int) map[(uchar) t[-1]]);
 }
 
 
 int my_strncasecmp_8bit(CHARSET_INFO * cs,
 				const char *s, const char *t, uint len)
 {
- while (len-- != 0 && my_toupper(cs,(uchar)*s++) == my_toupper(cs,(uchar)*t++)) ;
+ register uchar *map=cs->to_upper;
+ while (len-- != 0 && map[(uchar)*s++] == map[(uchar)*t++]) ;
    return (int) len+1;
 }