COMPMID-3880 Nightly failure 947: hikey960 mismatches CL PoolingLayer FP32

Signed-off-by: Giorgio Arena <giorgio.arena@arm.com>
Change-Id: I448f2b52e2089da1b859301eade7b988d816a816
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4245
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/CL/cl_kernels/pooling_layer.cl b/src/core/CL/cl_kernels/pooling_layer.cl
index e69c3c3..680e947 100644
--- a/src/core/CL/cl_kernels/pooling_layer.cl
+++ b/src/core/CL/cl_kernels/pooling_layer.cl
@@ -786,6 +786,8 @@
 }
 #endif // defined(POOL_SIZE_X) && defined(POOL_SIZE_Y)
 
+#define SELECT_TYPE SELECT_DATA_TYPE(ACC_DATA_TYPE, VEC_SIZE)
+
 /** Performs pooling layer of size equal to 2. This OpenCL kernel can perform the following pooling types:
  * -# max, -DPOOL_MAX must be passed at compile time
  * -# max extracting the max index, -DPOOL_MAX and -DEXTRACT_MAX_INDEX must be passed at compile time
@@ -899,10 +901,16 @@
 #if !defined(POOL_MAX)
     if(filter_size != 4)
     {
+        SELECT_TYPE cond_w_s = (SELECT_TYPE)idx_in_w < (SELECT_TYPE)0;
+        SELECT_TYPE cond_w_e = (SELECT_TYPE)idx_in_w >= (SELECT_TYPE)(SRC_WIDTH - 1);
+        SELECT_TYPE cond_h_s = (SELECT_TYPE)idx_in_h < (SELECT_TYPE)0;
+        SELECT_TYPE cond_h_e = (SELECT_TYPE)idx_in_h >= (SELECT_TYPE)(SRC_HEIGHT - 1);
+
         // Make invalid the values loaded if the x or y coordinate was clamped (out-of-bound)
-        data1 = select(data1, (VEC_DATA_TYPE(ACC_DATA_TYPE, VEC_SIZE))INITIAL_VALUE, (SELECT_DATA_TYPE(ACC_DATA_TYPE, VEC_SIZE))(pool_x_e == pool_x_s));
-        data2 = select(data2, (VEC_DATA_TYPE(ACC_DATA_TYPE, VEC_SIZE))INITIAL_VALUE, (SELECT_DATA_TYPE(ACC_DATA_TYPE, VEC_SIZE))(pool_y_e == pool_y_s));
-        data3 = select(data3, (VEC_DATA_TYPE(ACC_DATA_TYPE, VEC_SIZE))INITIAL_VALUE, (SELECT_DATA_TYPE(ACC_DATA_TYPE, VEC_SIZE))((pool_x_e == pool_x_s) || (pool_y_e == pool_y_s)));
+        data0 = select(data0, (VEC_DATA_TYPE(ACC_DATA_TYPE, VEC_SIZE))INITIAL_VALUE, (SELECT_TYPE)(cond_w_s | cond_h_s));
+        data1 = select(data1, (VEC_DATA_TYPE(ACC_DATA_TYPE, VEC_SIZE))INITIAL_VALUE, (SELECT_TYPE)(cond_w_e | cond_h_s));
+        data2 = select(data2, (VEC_DATA_TYPE(ACC_DATA_TYPE, VEC_SIZE))INITIAL_VALUE, (SELECT_TYPE)(cond_w_s | cond_h_e));
+        data3 = select(data3, (VEC_DATA_TYPE(ACC_DATA_TYPE, VEC_SIZE))INITIAL_VALUE, (SELECT_TYPE)(cond_w_e | cond_h_e));
     }
 #endif // !defined(POOL_MAX)