From aa2e1536cbad90542d40b8ef7e42290a8bf8aed2 Mon Sep 17 00:00:00 2001
From: qwang12 <qwang12@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Mon, 28 Jul 2008 05:36:44 +0000
Subject: [PATCH] Optimize GetUnicodeStringTextOrSize's inner loop to call
 ReadUnalign16 instead of CompareMem and remove a unnecessary local variable.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5580 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdeModulePkg/Universal/HiiDatabaseDxe/String.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/MdeModulePkg/Universal/HiiDatabaseDxe/String.c b/MdeModulePkg/Universal/HiiDatabaseDxe/String.c
index 9850cba8e0..57b887d8a6 100644
--- a/MdeModulePkg/Universal/HiiDatabaseDxe/String.c
+++ b/MdeModulePkg/Universal/HiiDatabaseDxe/String.c
@@ -163,15 +163,13 @@ GetUnicodeStringTextOrSize (
   )
 {
   UINTN  StringSize;
-  CHAR16 Zero;
   UINT8  *StringPtr;
 
   ASSERT (StringSrc != NULL && BufferSize != NULL);
 
-  ZeroMem (&Zero, sizeof (CHAR16));
   StringSize = sizeof (CHAR16);
   StringPtr  = StringSrc;
-  while (CompareMem (StringPtr, &Zero, sizeof (CHAR16)) != 0) {
+  while (ReadUnaligned16 ((UINT16 *) StringPtr) != 0) {
     StringSize += sizeof (CHAR16);
     StringPtr += sizeof (CHAR16);
   }