From: Antoine Pitrou <solipsis@pitrou.net>
Date: Thu, 13 Oct 2011 15:58:11 +0000 (+0200)
Subject: Simplify heuristic for when to use memchr
X-Git-Tag: v3.3.0a1~1182
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=dda339e6d22778f5c4bdeb6f588d341ce131acbb;p=python

Simplify heuristic for when to use memchr
---

diff --git a/Objects/stringlib/fastsearch.h b/Objects/stringlib/fastsearch.h
index 085ec6a3d2..0f7aea74a9 100644
--- a/Objects/stringlib/fastsearch.h
+++ b/Objects/stringlib/fastsearch.h
@@ -113,20 +113,10 @@ FASTSEARCH(const STRINGLIB_CHAR* s, Py_ssize_t n,
             /* use memchr if we can choose a needle without two many likely
                false positives */
             unsigned char needle;
-            int use_needle = 1;
             needle = p[0] & 0xff;
 #if STRINGLIB_SIZEOF_CHAR > 1
-            if (needle == 0) {
-                needle = (p[0] >> 8) & 0xff;
-#if STRINGLIB_SIZEOF_CHAR > 2
-                if (needle == 0)
-                    needle = (p[0] >> 16) & 0xff;
+            if (needle != 0)
 #endif
-                if (needle >= 32 || needle == 0)
-                    use_needle = 0;
-            }
-#endif
-            if (use_needle)
                 return STRINGLIB(fastsearch_memchr_1char)
                        (s, n, p[0], needle, maxcount, mode);
         }