[xserver patch] Optimize shadowUpdatePacked()

[Adrian Bunk]

From: Ilpo Ruotsalainen <ilpo.ruotsalainen at movial.com>

http://bugs.freedesktop.org/show_bug.cgi?id=26973

Signed-off-by: Adrian Bunk <adrian.bunk at movial.com>

---

We already ship this patch in the ARM Linux Internet Platform, and it 
looks like a good candidate for upstream inclusion.

The "#define PickBit" can be deleted, but that's unrelated.

 miext/shadow/shpacked.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/miext/shadow/shpacked.c b/miext/shadow/shpacked.c
index 6736162..f95adf9 100644
--- a/miext/shadow/shpacked.c
+++ b/miext/shadow/shpacked.c
@@ -102,8 +102,7 @@ shadowUpdatePacked (ScreenPtr	    pScreen,
 		width -= i;
 		scr += i;
 #define PickBit(a,i)	(((a) >> (i)) & 1)
-		while (i--)
-		    *win++ = *sha++;
+		memcpy(win, sha, i * sizeof(FbBits));
 	    }
 	    shaLine += shaStride;
 	    y++;
-- 
1.5.6.1