[Beignet] [PATCH] Fix GCC6 build bug

[Yang, Rong R]

LGTM, pushed, thanks.

> -----Original Message-----
> From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On Behalf Of
> Xiuli Pan
> Sent: Tuesday, July 11, 2017 10:02
> To: beignet at lists.freedesktop.org
> Cc: Pan, Xiuli <xiuli.pan at intel.com>
> Subject: [Beignet] [PATCH] Fix GCC6 build bug
> 
> From: Pan Xiuli <xiuli.pan at intel.com>
> 
> GCC6 refine the c headers and need to add the needed function header, like
> the abs in math.h.
> 
> Signed-off-by: Pan Xiuli <xiuli.pan at intel.com>
> ---
>  backend/src/backend/gen_insn_selection_optimize.cpp | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/backend/src/backend/gen_insn_selection_optimize.cpp
> b/backend/src/backend/gen_insn_selection_optimize.cpp
> index 2ab2a7f..71333a4 100644
> --- a/backend/src/backend/gen_insn_selection_optimize.cpp
> +++ b/backend/src/backend/gen_insn_selection_optimize.cpp
> @@ -9,6 +9,7 @@
>  #include <algorithm>
>  #include <climits>
>  #include <map>
> +#include <math.h>
> 
>  namespace gbe
>  {
> --
> 2.7.4
> 
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