From c0456df6110d012290ea4cc250a93fe0acbeb68f Mon Sep 17 00:00:00 2001
From: Ilya Lavrenov <ilya.lavrenov@itseez.com>
Date: Mon, 18 Nov 2013 18:50:40 +0400
Subject: [PATCH] workaround for ocl::absSum (eliminated error: unreachable
 executed)

---
 modules/ocl/src/arithm.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/modules/ocl/src/arithm.cpp b/modules/ocl/src/arithm.cpp
index 68c5269..8a2390d 100644
--- a/modules/ocl/src/arithm.cpp
+++ b/modules/ocl/src/arithm.cpp
@@ -394,12 +394,16 @@ Scalar cv::ocl::sum(const oclMat &src)
 
 Scalar cv::ocl::absSum(const oclMat &src)
 {
-    if (!src.clCxt->supportsFeature(FEATURE_CL_DOUBLE) && src.depth() == CV_64F)
+    int sdepth = src.depth();
+    if (!src.clCxt->supportsFeature(FEATURE_CL_DOUBLE) && sdepth == CV_64F)
     {
         CV_Error(CV_OpenCLDoubleNotSupported, "Selected device doesn't support double");
         return cv::Scalar::all(0);
     }
 
+    if (sdepth == CV_8U || sdepth == CV_16U)
+        return sum(src);
+
     static sumFunc functab[3] =
     {
         arithmetic_sum<int>,
@@ -407,7 +411,7 @@ Scalar cv::ocl::absSum(const oclMat &src)
         arithmetic_sum<double>
     };
 
-    int ddepth = std::max(src.depth(), CV_32S);
+    int ddepth = std::max(sdepth, CV_32S);
     sumFunc func = functab[ddepth - CV_32S];
     return func(src, ABS_SUM, ddepth);
 }
-- 
2.7.4