diff --git a/src/core/CL/CLHelpers.cpp b/src/core/CL/CLHelpers.cpp
index 9754beb..84de380 100644
--- a/src/core/CL/CLHelpers.cpp
+++ b/src/core/CL/CLHelpers.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2019 ARM Limited.
+ * Copyright (c) 2016-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -118,6 +118,24 @@
     }
 }
 
+std::string get_cl_signed_type_from_element_size(size_t element_size)
+{
+    switch(element_size)
+    {
+        case 1:
+            return "char";
+        case 2:
+            return "short";
+        case 4:
+            return "int";
+        case 8:
+            return "long";
+        default:
+            ARM_COMPUTE_ERROR("Data type not supported");
+            return "";
+    }
+}
+
 std::string get_cl_select_type_from_data_type(const DataType &dt)
 {
     switch(dt)
diff --git a/src/core/CL/cl_kernels/arg_min_max.cl b/src/core/CL/cl_kernels/arg_min_max.cl
index 3f75377..06dcc8d 100644
--- a/src/core/CL/cl_kernels/arg_min_max.cl
+++ b/src/core/CL/cl_kernels/arg_min_max.cl
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 ARM Limited.
+ * Copyright (c) 2019-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -23,6 +23,19 @@
  */
 #include "helpers.h"
 
+#if defined(FLOAT_DATA_TYPE)
+#define ISGREATER(x, y) isgreater(x, y)
+#define ISLESS(x, y) isless(x, y)
+#else // !FLOAT_DATA_TYPE
+#if defined(WIDTH)
+#define ISGREATER(x, y) (x > y) ? 1 : 0
+#define ISLESS(x, y) (x < y) ? 1 : 0
+#else // !defined(WIDTH)
+#define ISGREATER(x, y) select((VEC_DATA_TYPE(DATA_TYPE_SELECT, 16))0, (VEC_DATA_TYPE(DATA_TYPE_SELECT, 16)) - 1, x > y)
+#define ISLESS(x, y) select((VEC_DATA_TYPE(DATA_TYPE_SELECT, 16))0, (VEC_DATA_TYPE(DATA_TYPE_SELECT, 16)) - 1, x < y)
+#endif // defined(WIDTH)
+#endif // defined(FLOAT_DATA_TYPE)
+
 #if defined(ARG_MAX)
 #define CONDITION_TO_USE(x, y) ISGREATER(x, y)
 #elif defined(ARG_MIN)
@@ -31,7 +44,7 @@
 #error "Unsupported reduction operation!"
 #endif // defined(ARG_MAX)
 
-#if defined(DATA_TYPE_OUTPUT)
+#if defined(DATA_TYPE_OUTPUT) && defined(DATA_TYPE_SELECT)
 #if defined(WIDTH)
 #if defined(ARG_MIN)
 #if defined(PREV_OUTPUT)
@@ -81,20 +94,20 @@
     VEC_DATA_TYPE(DATA_TYPE_OUTPUT, 16)
     res = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
 
-    VEC_DATA_TYPE(COND_DATA_TYPE, 8)
+    VEC_DATA_TYPE(DATA_TYPE_SELECT, 8)
     idx_sel       = (in.s01234567 <= in.s89abcdef);
     in.s01234567  = select(in.s89abcdef, in.s01234567, idx_sel);
     res.s01234567 = select(res.s89abcdef, res.s01234567, CONVERT(idx_sel, int8));
 
-    idx_sel.s0123 = (in.s0123 < in.s4567) || (in.s0123 == in.s4567 && CONVERT((res.s0123 < res.s4567), VEC_DATA_TYPE(COND_DATA_TYPE, 4)));
+    idx_sel.s0123 = (in.s0123 < in.s4567) || (in.s0123 == in.s4567 && CONVERT((res.s0123 < res.s4567), VEC_DATA_TYPE(DATA_TYPE_SELECT, 4)));
     in.s0123      = select(in.s4567, in.s0123, idx_sel.s0123);
     res.s0123     = select(res.s4567, res.s0123, CONVERT(idx_sel.s0123, int4));
 
-    idx_sel.s01 = (in.s01 < in.s23) || (in.s01 == in.s23 && CONVERT((res.s01 < res.s23), VEC_DATA_TYPE(COND_DATA_TYPE, 2)));
+    idx_sel.s01 = (in.s01 < in.s23) || (in.s01 == in.s23 && CONVERT((res.s01 < res.s23), VEC_DATA_TYPE(DATA_TYPE_SELECT, 2)));
     in.s01      = select(in.s23, in.s01, idx_sel.s01);
     res.s01     = select(res.s23, res.s01, CONVERT(idx_sel.s01, int2));
 
-    idx_sel.s0 = (in.s0 < in.s1) || (in.s0 == in.s1 && CONVERT((res.s0 < res.s1), COND_DATA_TYPE));
+    idx_sel.s0 = (in.s0 < in.s1) || (in.s0 == in.s1 && CONVERT((res.s0 < res.s1), DATA_TYPE_SELECT));
     res.s0     = select(res.s1, res.s0, CONVERT(idx_sel.s0, int));
 
     return res.s0 + x_elem;
@@ -150,20 +163,20 @@
     VEC_DATA_TYPE(DATA_TYPE_OUTPUT, 16)
     res = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
 
-    VEC_DATA_TYPE(COND_DATA_TYPE, 8)
+    VEC_DATA_TYPE(DATA_TYPE_SELECT, 8)
     idx_sel       = (in.s01234567 >= in.s89abcdef);
     in.s01234567  = select(in.s89abcdef, in.s01234567, idx_sel);
     res.s01234567 = select(res.s89abcdef, res.s01234567, CONVERT(idx_sel, int8));
 
-    idx_sel.s0123 = (in.s0123 > in.s4567) || (in.s0123 == in.s4567 && CONVERT((res.s0123 < res.s4567), VEC_DATA_TYPE(COND_DATA_TYPE, 4)));
+    idx_sel.s0123 = (in.s0123 > in.s4567) || (in.s0123 == in.s4567 && CONVERT((res.s0123 < res.s4567), VEC_DATA_TYPE(DATA_TYPE_SELECT, 4)));
     in.s0123      = select(in.s4567, in.s0123, idx_sel.s0123);
     res.s0123     = select(res.s4567, res.s0123, CONVERT(idx_sel.s0123, int4));
 
-    idx_sel.s01 = (in.s01 > in.s23) || (in.s01 == in.s23 && CONVERT((res.s01 < res.s23), VEC_DATA_TYPE(COND_DATA_TYPE, 2)));
+    idx_sel.s01 = (in.s01 > in.s23) || (in.s01 == in.s23 && CONVERT((res.s01 < res.s23), VEC_DATA_TYPE(DATA_TYPE_SELECT, 2)));
     in.s01      = select(in.s23, in.s01, idx_sel.s01);
     res.s01     = select(res.s23, res.s01, CONVERT(idx_sel.s01, int2));
 
-    idx_sel.s0 = (in.s0 > in.s1) || (in.s0 == in.s1 && CONVERT((res.s0 < res.s1), COND_DATA_TYPE));
+    idx_sel.s0 = (in.s0 > in.s1) || (in.s0 == in.s1 && CONVERT((res.s0 < res.s1), DATA_TYPE_SELECT));
     res.s0     = select(res.s1, res.s0, CONVERT(idx_sel.s0, int));
 
     return res.s0 + x_elem;
@@ -276,7 +289,7 @@
  *
  * @note The input data type must be passed at compile time using -DDATA_TYPE: e.g. -DDATA_TYPE=float
  * @note The data type of the output must be passed at compile time using -DDATA_TYPE_OUTPUT: e.g. -DDATA_TYPE_OUTPUT=uint
- * @note The data type of the intermediate results must be passed at compile time using -DDATA_TYPE_PROMOTED: e.g. -DDATA_TYPE_PROMOTED=uint
+ * @note The data type of the select results must be passed at compile time using -DDATA_TYPE_SELECT: e.g. -DDATA_TYPE_SELECT=int
  * @note The height size must be passed at compile time using -DHEIGHT e.g. -DHEIGHT=128
  *
  * @param[in] src_ptr                              Pointer to the source tensor. Supported data types: S32/F16/F32
@@ -299,15 +312,15 @@
     Image src    = CONVERT_TO_IMAGE_STRUCT(src);
     Image output = CONVERT_TO_IMAGE_STRUCT(output);
 
-    VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16)
-    res = CONVERT(vload16(0, (__global DATA_TYPE *)offset(&src, 0, 0)), VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16));
+    VEC_DATA_TYPE(DATA_TYPE, 16)
+    res = CONVERT(vload16(0, (__global DATA_TYPE *)offset(&src, 0, 0)), VEC_DATA_TYPE(DATA_TYPE, 16));
 
     VEC_DATA_TYPE(DATA_TYPE_OUTPUT, 16)
     indx = 0;
     for(unsigned int y = 1; y < HEIGHT; ++y)
     {
-        VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16)
-        in = CONVERT(vload16(0, (__global DATA_TYPE *)offset(&src, 0, y)), VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16));
+        VEC_DATA_TYPE(DATA_TYPE, 16)
+        in = CONVERT(vload16(0, (__global DATA_TYPE *)offset(&src, 0, y)), VEC_DATA_TYPE(DATA_TYPE, 16));
 
         VEC_DATA_TYPE(DATA_TYPE_OUTPUT, 16)
         cond_conv = CONVERT(CONDITION_TO_USE(in, res), VEC_DATA_TYPE(DATA_TYPE_OUTPUT, 16));
@@ -324,7 +337,7 @@
 /** This kernel performs reduction on z-axis.
  *
  * @note The data type must be passed at compile time using -DDATA_TYPE: e.g. -DDATA_TYPE=float
- * @note The data type of the intermediate results must be passed at compile time using -DDATA_TYPE_PROMOTED: e.g. -DDATA_TYPE_PROMOTED=uint
+ * @note The data type of the select results must be passed at compile time using -DDATA_TYPE_SELECT: e.g. -DDATA_TYPE_SELECT=int
  * @note The depth size must be passed at compile time using -DDEPTH e.g. -DDEPTH=128
  *
  * @param[in] input_ptr                            Pointer to the source tensor. Supported data types: S32/F16/F32
@@ -351,15 +364,15 @@
     Tensor3D input  = CONVERT_TO_TENSOR3D_STRUCT(input);
     Tensor3D output = CONVERT_TO_TENSOR3D_STRUCT(output);
 
-    VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16)
-    res = CONVERT(vload16(0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, 0)), VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16));
+    VEC_DATA_TYPE(DATA_TYPE, 16)
+    res = CONVERT(vload16(0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, 0)), VEC_DATA_TYPE(DATA_TYPE, 16));
 
     VEC_DATA_TYPE(DATA_TYPE_OUTPUT, 16)
     indx = 0;
     for(DATA_TYPE_OUTPUT z = 1; z < DEPTH; ++z)
     {
-        VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16)
-        in = CONVERT(vload16(0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, z)), VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16));
+        VEC_DATA_TYPE(DATA_TYPE, 16)
+        in = CONVERT(vload16(0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, z)), VEC_DATA_TYPE(DATA_TYPE, 16));
 
         VEC_DATA_TYPE(DATA_TYPE_OUTPUT, 16)
         cond_conv = CONVERT(CONDITION_TO_USE(in, res), VEC_DATA_TYPE(DATA_TYPE_OUTPUT, 16));
@@ -376,7 +389,7 @@
 /** This kernel performs reduction on w-axis.
  *
  * @note The data type must be passed at compile time using -DDATA_TYPE: e.g. -DDATA_TYPE=float
- * @note The data type of the intermediate results must be passed at compile time using -DDATA_TYPE_PROMOTED: e.g. -DDATA_TYPE_PROMOTED=uint
+ * @note The data type of the select results must be passed at compile time using -DDATA_TYPE_SELECT: e.g. -DDATA_TYPE_SELECT=int
  * @note The batch size must be passed at compile time using -DBATCH e.g. -DBATCH=128
  * @note The depth size must be passed at compile time using -DBATCH e.g. -DDEPTH=128
  *
@@ -408,15 +421,15 @@
     Tensor4D input  = CONVERT_TO_TENSOR4D_STRUCT(input, DEPTH);
     Tensor4D output = CONVERT_TO_TENSOR4D_STRUCT(output, DEPTH);
 
-    VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16)
-    res = CONVERT(vload16(0, (__global DATA_TYPE *)tensor4D_offset(&input, 0, 0, 0, 0)), VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16));
+    VEC_DATA_TYPE(DATA_TYPE, 16)
+    res = CONVERT(vload16(0, (__global DATA_TYPE *)tensor4D_offset(&input, 0, 0, 0, 0)), VEC_DATA_TYPE(DATA_TYPE, 16));
 
     VEC_DATA_TYPE(DATA_TYPE_OUTPUT, 16)
     indx = 0;
     for(DATA_TYPE_OUTPUT w = 1; w < BATCH; ++w)
     {
-        VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16)
-        in = CONVERT(vload16(0, (__global DATA_TYPE *)tensor4D_offset(&input, 0, 0, 0, w)), VEC_DATA_TYPE(DATA_TYPE_PROMOTED, 16));
+        VEC_DATA_TYPE(DATA_TYPE, 16)
+        in = CONVERT(vload16(0, (__global DATA_TYPE *)tensor4D_offset(&input, 0, 0, 0, w)), VEC_DATA_TYPE(DATA_TYPE, 16));
 
         VEC_DATA_TYPE(DATA_TYPE_OUTPUT, 16)
         cond_conv = CONVERT(CONDITION_TO_USE(in, res), VEC_DATA_TYPE(DATA_TYPE_OUTPUT, 16));
@@ -428,4 +441,4 @@
     vstore16(indx, 0, (__global DATA_TYPE_OUTPUT *)output.ptr);
 }
 #endif /* defined(BATCH) && defined(DEPTH) */
-#endif // defined(DATA_TYPE_OUTPUT)
\ No newline at end of file
+#endif /* defined(DATA_TYPE_OUTPUT) && defined(DATA_TYPE_SELECT) */
\ No newline at end of file
diff --git a/src/core/CL/cl_kernels/helpers.h b/src/core/CL/cl_kernels/helpers.h
index ec5701d..c4cbf77 100644
--- a/src/core/CL/cl_kernels/helpers.h
+++ b/src/core/CL/cl_kernels/helpers.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2019 ARM Limited.
+ * Copyright (c) 2016-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -266,19 +266,6 @@
 #define CONVERT_SAT_ROUND_STR(x, type, round) (convert_##type##_sat_##round((x)))
 #define CONVERT_SAT_ROUND(x, type, round) CONVERT_SAT_ROUND_STR(x, type, round)
 
-#if FLOAT_DATA_TYPE
-#define ISGREATER(x, y) isgreater(x, y)
-#define ISLESS(x, y) isless(x, y)
-#else // !FLOAT_DATA_TYPE
-#if defined(WIDTH)
-#define ISGREATER(x, y) (x > y) ? 1 : 0
-#define ISLESS(x, y) (x < y) ? 1 : 0
-#else // !defined(WIDTH)
-#define ISGREATER(x, y) select((int16)0, (int16)-1, x > y)
-#define ISLESS(x, y) select((int16)0, (int16)-1, x < y)
-#endif // defined(WIDTH)
-#endif // FLOAT_DATA_TYPE
-
 #define VECTOR_DECLARATION(name)     \
     __global uchar *name##_ptr,      \
     uint        name##_stride_x, \
diff --git a/src/core/CL/cl_kernels/reduction_operation.cl b/src/core/CL/cl_kernels/reduction_operation.cl
index 451b962..79d0d06 100644
--- a/src/core/CL/cl_kernels/reduction_operation.cl
+++ b/src/core/CL/cl_kernels/reduction_operation.cl
@@ -23,6 +23,19 @@
  */
 #include "helpers.h"
 
+#if defined(FLOAT_DATA_TYPE)
+#define ISGREATER(x, y) isgreater(x, y)
+#define ISLESS(x, y) isless(x, y)
+#else // !FLOAT_DATA_TYPE
+#if defined(WIDTH)
+#define ISGREATER(x, y) (x > y) ? 1 : 0
+#define ISLESS(x, y) (x < y) ? 1 : 0
+#else // !defined(WIDTH)
+#define ISGREATER(x, y) select(int16)0, int16) - 1, x > y)
+#define ISLESS(x, y) select(int16)0, int16) - 1, x < y)
+#endif // defined(WIDTH)
+#endif // defined(FLOAT_DATA_TYPE)
+
 /** Calculate square sum of a vector
  *
  * @param[in] input Pointer to the first pixel.
diff --git a/src/core/CL/kernels/CLArgMinMaxLayerKernel.cpp b/src/core/CL/kernels/CLArgMinMaxLayerKernel.cpp
index c8e87ba..bdb7ab7 100644
--- a/src/core/CL/kernels/CLArgMinMaxLayerKernel.cpp
+++ b/src/core/CL/kernels/CLArgMinMaxLayerKernel.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 ARM Limited.
+ * Copyright (c) 2019-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -46,7 +46,7 @@
 {
     ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(input, output);
     ARM_COMPUTE_RETURN_ERROR_ON_F16_UNSUPPORTED(input);
-    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::S32, DataType::F16, DataType::F32);
+    ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::QASYMM8, DataType::S32, DataType::F16, DataType::F32);
     ARM_COMPUTE_RETURN_ERROR_ON_MSG(op != ReductionOperation::ARG_IDX_MAX && op != ReductionOperation::ARG_IDX_MIN, "Only ARG_IDX_MAX and ARG_IDX_MIN are supported");
     ARM_COMPUTE_RETURN_ERROR_ON_MSG(axis >= TensorShape::num_max_dimensions, "Reduction axis greater than max number of dimensions");
     ARM_COMPUTE_RETURN_ERROR_ON_MSG(axis > 3, "Unsupported reduction axis");
@@ -128,17 +128,14 @@
     _op             = op;
 
     // Set build options
-    CLBuildOptions    build_opts;
-    const std::string data_type_promoted = get_cl_type_from_data_type(input->info()->data_type());
+    CLBuildOptions build_opts;
 
     build_opts.add_option_if(_prev_output != nullptr, "-DPREV_OUTPUT");
     build_opts.add_option("-DDATA_TYPE=" + get_cl_type_from_data_type(input->info()->data_type()));
-    build_opts.add_option("-DDATA_TYPE_PROMOTED=" + data_type_promoted);
     build_opts.add_option_if(is_data_type_float(input->info()->data_type()), "-DFLOAT_DATA_TYPE");
-    build_opts.add_option_if(op == ReductionOperation::ARG_IDX_MAX, "-DARG_MAX");
-    build_opts.add_option_if(op == ReductionOperation::ARG_IDX_MIN, "-DARG_MIN");
-    build_opts.add_option("-DCOND_DATA_TYPE=" + get_cl_select_type_from_data_type(input->info()->data_type()));
+    build_opts.add_option_if_else(op == ReductionOperation::ARG_IDX_MAX, "-DARG_MAX", "-DARG_MIN");
     build_opts.add_option("-DDATA_TYPE_OUTPUT=" + get_cl_type_from_data_type(output->info()->data_type()));
+    build_opts.add_option("-DDATA_TYPE_SELECT=" + get_cl_signed_type_from_element_size(input->info()->element_size()));
 
     // Create kernel
     cl::NDRange lws_hint = CLKernelLibrary::get().default_ndrange();