From: Andi Gutmans <andi@php.net>
Date: Sun, 9 Aug 2009 04:46:02 +0000 (+0000)
Subject: - Optimize slightly for common case - n!=4
X-Git-Tag: php-5.4.0alpha1~191^2~2825
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e4765438b8707ae9e681497dbdf454d286421dda;p=php

- Optimize slightly for common case - n!=4
---

diff --git a/Zend/zend_alloc.c b/Zend/zend_alloc.c
index 7c37fee005..f7b6ffd8fb 100644
--- a/Zend/zend_alloc.c
+++ b/Zend/zend_alloc.c
@@ -730,12 +730,14 @@ static inline unsigned int zend_mm_low_bit(size_t _size) /* {{{ */
 	unsigned int n;
 	unsigned int index = 0;
 
-	do {
-		n = offset[_size & 15];
+	n = offset[_size & 15];
+	while (n == 4) {
 		_size >>= 4;
 		index += n;
-	} while (n == 4);
-	return index;
+		n = offset[_size & 15];
+	}
+
+	return index + n;
 #endif
 }
 /* }}} */