[Beignet] OpenCV Morph OCL Perf case is crash based on beignet

[Zhigang Gong]

Did you try latest git master?
It should has been fixed by commit:
commit 5417a7e2afb3f2043dbb8abbaebca5115b87ab70
Author: Zhigang Gong <zhigang.gong at intel.com>
Date:   Tue Oct 21 21:03:46 2014 +0800

    GBE: add basic PHINode support in legalize pass.

    Lack of the incomplete PHINode support currently.
    After this patch, we could fix all the crash cases in piglit.

    Signed-off-by: Zhigang Gong <zhigang.gong at intel.com>
    Tested-by: "Meng, Mengmeng" <mengmeng.meng at intel.com>

> -----Original Message-----
> From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On Behalf Of
> yan.wang at linux.intel.com
> Sent: Thursday, October 23, 2014 3:07 PM
> To: beignet at lists.freedesktop.org
> Subject: [Beignet] OpenCV Morph OCL Perf case is crash based on beignet
> 
> Hi, All,
>   Today I tried the latest opencv code (3.0 master) and found morph perf
case
> will crash when test CV_8UC1 type only.
>   The case number is the following:
>   opencv_perf_imgproc
> --gtest_filter=OCL_MorphologyExFixture_MorphologyEx.MorphologyEx/4.
>   Its operation type is MORPHY_GRADIENT.
>   I do the initial debug and found it crashed in llvm_legalize.cpp line
> 516 because insn->getOpcode() couldn't get a valid op code.
> 
>   %.0.i = phi i128 [ %phitmp962, %58 ], [ 0,
> %isBorder.exit.thread.thread650 ], [ 0, %19 ], [ 0, %25 ] ASSERTION
FAILED:
> false && "Illegal instruction\n"
>   at file /home/yanwang/beignet/backend/src/llvm/llvm_legalize.cpp,
> function bool gbe::Legalize::legalizeFunction(llvm::Function&), line 516
> 
>   After asked Junyan, it seems "phi" op code hasn't been supported.
>   Thanks.
> 
> Yan Wang
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