Stuart Brady a écrit :
> On Fri, Oct 23, 2009 at 09:04:53AM +0200, Aurelien Jarno wrote:
>> Stuart Brady a écrit :
>>> Just a quick note that the implementation of clz, ctz and popcnt is
>>> still listed in the TCG TODO list. The last time I looked, I noticed
>>> that quite a few architectures hav
On Fri, Oct 23, 2009 at 09:04:53AM +0200, Aurelien Jarno wrote:
> Stuart Brady a écrit :
> > Just a quick note that the implementation of clz, ctz and popcnt is
> > still listed in the TCG TODO list. The last time I looked, I noticed
> > that quite a few architectures have clz/ctz instructions:
>
Stuart Brady a écrit :
> On Thu, Oct 15, 2009 at 11:14:52PM +0200, Aurelien Jarno wrote:
>> @@ -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;
>>
On Thu, Oct 15, 2009 at 11:14:52PM +0200, Aurelien Jarno wrote:
> @@ -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);
> }
>
>
On Thu, Oct 15, 2009 at 11:14 PM, Aurelien Jarno wrote:
> Signed-off-by: Aurelien Jarno
> ---
> target-arm/helper.c | 6 ++
> 1 files changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/target-arm/helper.c b/target-arm/helper.c
> index 701629a..656b5df 100644
> --- a/target-arm/help
