OpenCV version: 3.4.1-dev
OpenCV VCS version: 3.4.1-314-g61edcee
Build type: release
Parallel framework: pthreads
CPU features: neon
[ INFO:0] Initialize OpenCL runtime...
OpenCL Platforms: 
    ARM Platform
        iGPU: Mali-T628 (OpenCL 1.2 v1.r17p0-01rel0.a881d28363cdb20f0017ed13c980967e)
(sniip)
[==========] 24 tests from 1 test case ran. (625 ms total)
[  PASSED  ] 22 tests.
[  FAILED  ] 2 tests, listed below:
[  FAILED  ] OCL_Imgproc/CLAHETest.Accuracy/18, where GetParam() = (8x64, 10, false)
[  FAILED  ] OCL_Imgproc/CLAHETest.Accuracy/19, where GetParam() = (8x64, 10, true)

OpenCV version: 3.4.1-dev
OpenCV VCS version: 3.4.1-314-g61edcee
Build type: release
Parallel framework: pthreads
CPU features: neon
[ INFO:0] Initialize OpenCL runtime...
OpenCL Platforms: 
    ARM Platform
        iGPU: Mali-T628 (OpenCL 1.2 v1.r17p0-01rel0.a881d28363cdb20f0017ed13c980967e)
(sniip)
[==========] 24 tests from 1 test case ran. (490 ms total)
[  PASSED  ] 24 tests.

    barrier(CLK_LOCAL_MEM_FENCE);

    if (tid < 8)
    {
#endif
        smem[tid] += smem[tid + 8];
        smem[tid] += smem[tid + 4];
        smem[tid] += smem[tid + 2];
        smem[tid] += smem[tid + 1];
    }