From: Sergey <sergionso@gmail.com>
Date: Thu, 13 Feb 2025 01:14:08 +0000 (-0800)
Subject: lib: better optimized casecompare() and ncasecompare()
X-Git-Tag: curl-8_13_0~500
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c1341813bd4ffd9571f58b908a68aed983fb9823;p=thirdparty%2Fcurl.git

lib: better optimized casecompare() and ncasecompare()

Less 'jne` or `je` CPU instructions.

Closes #16311
---

diff --git a/lib/strcase.c b/lib/strcase.c
index 112aedb193..7ae0929af3 100644
--- a/lib/strcase.c
+++ b/lib/strcase.c
@@ -91,7 +91,7 @@ char Curl_raw_tolower(char in)
 
 static int casecompare(const char *first, const char *second)
 {
-  while(*first && *second) {
+  while(*first) {
     if(Curl_raw_toupper(*first) != Curl_raw_toupper(*second))
       /* get out of the loop as soon as they do not match */
       return 0;
@@ -118,7 +118,7 @@ int curl_strequal(const char *first, const char *second)
 
 static int ncasecompare(const char *first, const char *second, size_t max)
 {
-  while(*first && *second && max) {
+  while(*first && max) {
     if(Curl_raw_toupper(*first) != Curl_raw_toupper(*second))
       return 0;
     max--;