COMPMID-3703 Remove OpenCL padding: CLActivationLayerKernel + create utility macro

Change-Id: I73edadc7299247e7bc51ae37c00d3709023da44a
Signed-off-by: Giorgio Arena <giorgio.arena@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4073
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/arm_compute/core/Utils.h b/arm_compute/core/Utils.h
index 13c2971930..d2bc50c7c6 100644
--- a/arm_compute/core/Utils.h
+++ b/arm_compute/core/Utils.h
@@ -1322,6 +1322,30 @@ bool check_value_range(T val, DataType dt, QuantizationInfo qinfo = Quantization
     }
 }
 
+/** Returns the adjusted vector size in case it is less than the input's first dimension, getting rounded down to its closest valid vector size
+ *
+ * @param[in] vec_size vector size to be adjusted
+ * @param[in] dim0     size of the first dimension
+ *
+ * @return the number of element processed along the X axis per thread
+ */
+inline unsigned int adjust_vec_size(unsigned int vec_size, size_t dim0)
+{
+    ARM_COMPUTE_ERROR_ON(vec_size > 16);
+
+    if(dim0 == 3)
+    {
+        return dim0;
+    }
+
+    while(vec_size > dim0)
+    {
+        vec_size >>= 1;
+    }
+
+    return vec_size;
+}
+
 #ifdef ARM_COMPUTE_ASSERTS_ENABLED
 /** Print consecutive elements to an output stream.
  *