[Beignet] [PATCH] GBE: Fix a bug in gatherBTI.

[Yang, Rong R]

LGTM, pushed, thanks.

> -----Original Message-----
> From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On Behalf Of
> Ruiling Song
> Sent: Monday, August 11, 2014 1:58 PM
> To: beignet at lists.freedesktop.org
> Cc: Song, Ruiling
> Subject: [Beignet] [PATCH] GBE: Fix a bug in gatherBTI.
> 
> The needNewBTI is a state that only valid for the current candidate.
> So need to reset to default value for each candidate.
> 
> This fix the regression in opencv 3.0:
> ./opencv_perf_objdetect
> OCL_Cascade_Image_MinSize_CascadeClassifier.CascadeClassifier
> 
> Signed-off-by: Ruiling Song <ruiling.song at intel.com>
> ---
>  backend/src/llvm/llvm_gen_backend.cpp |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/backend/src/llvm/llvm_gen_backend.cpp
> b/backend/src/llvm/llvm_gen_backend.cpp
> index 0fbf941..b3eb8c8 100644
> --- a/backend/src/llvm/llvm_gen_backend.cpp
> +++ b/backend/src/llvm/llvm_gen_backend.cpp
> @@ -3351,10 +3351,10 @@ handle_write_image:
>      std::vector<Value*> candidates;
>      candidates.push_back(pointer);
>      std::set<Value*> processed;
> -    bool needNewBTI = true;
> 
>      while (idx < candidates.size()) {
>        bool isPrivate = false;
> +      bool needNewBTI = true;
>        p = candidates[idx];
> 
>        while (dyn_cast<User>(p) && !dyn_cast<GlobalVariable>(p)) {
> --
> 1.7.10.4
> 
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