---

yaml --- r: 295199 b: refs/heads/master c: f43804b h: refs/heads/master i: 295197: 56c3326 295195: 683787b 295191: da774bd 295183: db5d1c2 295167: d89f356 v: v3
git-mirror · Mar 23, 2012 · 7d43e21 · 7d43e21
1 parent f136974
commit 7d43e21
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Showing 2 changed files with 17 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a403d930c58eb8448f81fa90c125ac36dc8ef89d
+refs/heads/master: f43804bf5f9ae1e60077c5f22aee5fdfe4f09837
diff --git a/trunk/lib/string.c b/trunk/lib/string.c
@@ -785,12 +785,24 @@ void *memchr_inv(const void *start, int c, size_t bytes)
 	if (bytes <= 16)
 		return check_bytes8(start, value, bytes);
 
-	value64 = value | value << 8 | value << 16 | value << 24;
-	value64 = (value64 & 0xffffffff) | value64 << 32;
-	prefix = 8 - ((unsigned long)start) % 8;
+	value64 = value;
+#if defined(ARCH_HAS_FAST_MULTIPLIER) && BITS_PER_LONG == 64
+	value64 *= 0x0101010101010101;
+#elif defined(ARCH_HAS_FAST_MULTIPLIER)
+	value64 *= 0x01010101;
+	value64 |= value64 << 32;
+#else
+	value64 |= value64 << 8;
+	value64 |= value64 << 16;
+	value64 |= value64 << 32;
+#endif
 
+	prefix = (unsigned long)start % 8;
 	if (prefix) {
-		u8 *r = check_bytes8(start, value, prefix);
+		u8 *r;
+
+		prefix = 8 - prefix;
+		r = check_bytes8(start, value, prefix);
 		if (r)
 			return r;
 		start += prefix;