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

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Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Acked-by: Laurent Desnogues <laurent.desnogues@gmail.com>
This commit is contained in:
Aurelien Jarno 2009-10-15 23:14:52 +02:00
parent 102251a4f3
commit 7bbcb0afe7
1 changed files with 2 additions and 4 deletions
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6
target-arm/helper.c
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@ -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)