[Beignet] [Patch V2 2/3] fix regression on pre-BDW platform.

[Yang, Rong R]

The patchset LGTM, pushed, thanks.

> -----Original Message-----
> From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On Behalf Of
> xionghu.luo at intel.com
> Sent: Monday, March 20, 2017 22:38
> To: beignet at lists.freedesktop.org
> Cc: Luo, Xionghu <xionghu.luo at intel.com>
> Subject: [Beignet] [Patch V2 2/3] fix regression on pre-BDW platform.
> 
> From: Luo Xionghu <xionghu.luo at intel.com>
> 
> ivb/hsw will spit the 32X32 to two simd8 instructions, and noMask instruction
> introduced there, the if-opt pass shouldn't change the predicate state for no
> mask instructions.
> 
> v2: fix typo.
> Signed-off-by: Luo Xionghu <xionghu.luo at intel.com>
> ---
>  backend/src/backend/gen_insn_selection_if_opt.cpp | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/backend/src/backend/gen_insn_selection_if_opt.cpp
> b/backend/src/backend/gen_insn_selection_if_opt.cpp
> index a99b465..eff42b9 100644
> --- a/backend/src/backend/gen_insn_selection_if_opt.cpp
> +++ b/backend/src/backend/gen_insn_selection_if_opt.cpp
> @@ -80,9 +80,13 @@ namespace gbe
>                optimized = true;
>              } else {
>                if (if_find) {
> -                insn.state.predicate = GEN_PREDICATE_NORMAL;
> -                insn.state.flag = 0;
> -                insn.state.subFlag = 1;
> +                if (insn.state.noMask == 1)
> +                  insn.state.predicate = GEN_PREDICATE_NONE;
> +                else {
> +                  insn.state.predicate = GEN_PREDICATE_NORMAL;
> +                  insn.state.flag = 0;
> +                  insn.state.subFlag = 1;
> +                }
>                }
>                ++iter;
>              }
> --
> 2.5.0
> 
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