---

yaml --- r: 292701 b: refs/heads/master c: 9d8e227 h: refs/heads/master i: 292699: 5db6115 v: v3
git-mirror · Jan 26, 2012 · 7329159 · 7329159
1 parent cc4a347
commit 7329159
Show file tree

Hide file tree

Showing 2 changed files with 11 additions and 10 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2ab560911a427fdc73bfd3a7d2944d8ee0ca6db8
+refs/heads/master: 9d8e22777e66f420e46490e9fc6f8cb7e0e2222b
diff --git a/trunk/arch/x86/lib/memcpy_64.S b/trunk/arch/x86/lib/memcpy_64.S
@@ -164,18 +164,19 @@ ENTRY(memcpy)
 	retq
 	.p2align 4
 .Lless_3bytes:
-	cmpl $0, %edx
-	je .Lend
+	subl $1, %edx
+	jb .Lend
 	/*
 	 * Move data from 1 bytes to 3 bytes.
 	 */
-.Lloop_1:
-	movb (%rsi), %r8b
-	movb %r8b, (%rdi)
-	incq %rdi
-	incq %rsi
-	decl %edx
-	jnz .Lloop_1
+	movzbl (%rsi), %ecx
+	jz .Lstore_1byte
+	movzbq 1(%rsi), %r8
+	movzbq (%rsi, %rdx), %r9
+	movb %r8b, 1(%rdi)
+	movb %r9b, (%rdi, %rdx)
+.Lstore_1byte:
+	movb %cl, (%rdi)
 
 .Lend:
 	retq