From: Aurelien Jarno <aurelien@aurel32.net>
Date: Thu, 15 Oct 2009 21:14:52 +0000 (+0200)
Subject: target-arm: use clz32() instead of a for loop
X-Git-Tag: v0.12.0-rc0~628
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7bbcb0afe715c36545bbbd872441c473927c1a4e;p=thirdparty%2Fqemu.git

target-arm: use clz32() instead of a for loop

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Acked-by: Laurent Desnogues <laurent.desnogues@gmail.com>
---

diff --git a/target-arm/helper.c b/target-arm/helper.c
index 701629af3a6..656b5df9ec9 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -7,6 +7,7 @@
 #include "gdbstub.h"
 #include "helpers.h"
 #include "qemu-common.h"
+#include "host-utils.h"
 
 static uint32_t cortexa8_cp15_c0_c1[8] =
 { 0x1031, 0x11, 0x400, 0, 0x31100003, 0x20000000, 0x01202000, 0x11 };
@@ -394,10 +395,7 @@ uint32_t HELPER(uxtb16)(uint32_t x)
 
 uint32_t HELPER(clz)(uint32_t x)
 {
-    int count;
-    for (count = 32; x; count--)
-        x >>= 1;
-    return count;
+    return clz32(x);
 }
 
 int32_t HELPER(sdiv)(int32_t num, int32_t den)