FS-4928 doing 100 calls I found 7 million calls to toupper, this patch replaces…

FS-4928 doing 100 calls I found 7 million calls to toupper, this patch replaces it with an inline optimized one I found online.  Not sure it helps but maybe you can profile it again with latest.

src/include/switch_utils.h

@@ -40,7 +40,18 @@
 
 #include <switch.h>
 
-SWITCH_BEGIN_EXTERN_C SWITCH_DECLARE(int) switch_toupper(int c);
+SWITCH_BEGIN_EXTERN_C 
+
+/* https://code.google.com/p/stringencoders/wiki/PerformanceAscii */
+static inline uint32_t switch_toupper(uint32_t eax)
+{
+    uint32_t ebx = (0x7f7f7f7ful & eax) + 0x05050505ul;
+    ebx = (0x7f7f7f7ful & ebx) + 0x1a1a1a1aul;
+    ebx = ((ebx & ~eax) >> 2 ) & 0x20202020ul;
+    return eax - ebx;
+}
+
+SWITCH_DECLARE(int) old_switch_toupper(int c);
 SWITCH_DECLARE(int) switch_tolower(int c);
 SWITCH_DECLARE(int) switch_isalnum(int c);
 SWITCH_DECLARE(int) switch_isalpha(int c);

src/switch_utils.c

@@ -2609,7 +2609,7 @@ const short _switch_C_toupper_[1 + SWITCH_CTYPE_NUM_CHARS] = {
 
 const short *_switch_toupper_tab_ = _switch_C_toupper_;
 
-SWITCH_DECLARE(int) switch_toupper(int c)
+SWITCH_DECLARE(int) old_switch_toupper(int c)
 {
 	if ((unsigned int) c > 255)
 		return (c);