[Beignet] [PATCH] Clear atomic dst buffer to fix atomic random fail.

[Zhigang Gong]

LGTM, pushed, thanks.

On Mon, Jul 01, 2013 at 01:38:48PM +0800, Yang Rong wrote:
> Because atomic's address used as src and dst, so need to clear this address.
> 
> Signed-off-by: Yang Rong <rong.r.yang at intel.com>
> ---
>  utests/compiler_atomic_functions.cpp |    5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/utests/compiler_atomic_functions.cpp b/utests/compiler_atomic_functions.cpp
> index 71e8384..571e0c6 100644
> --- a/utests/compiler_atomic_functions.cpp
> +++ b/utests/compiler_atomic_functions.cpp
> @@ -1,6 +1,7 @@
>  #include "utest_helper.hpp"
>  #include <cmath>
>  #include <algorithm>
> +#include <string.h>
>  
>  #define GROUP_NUM 16
>  #define LOCAL_SIZE 64
> @@ -71,6 +72,10 @@ static void compiler_atomic_functions(void)
>    OCL_SET_ARG(1, 16 * sizeof(int), NULL);
>    OCL_SET_ARG(2, sizeof(cl_mem), &buf[1]);
>  
> +  OCL_MAP_BUFFER(0);
> +  memset(buf_data[0], 0, 16 * sizeof(int));
> +  OCL_UNMAP_BUFFER(0);
> +
>    OCL_MAP_BUFFER(1);
>    for (uint32_t i = 0; i < locals[0]; ++i)
>        cpu_src[i] = ((int*)buf_data[1])[i] = rand() & 0xff;
> -- 
> 1.7.10.4
> 
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