From cab1ab92813a346779bacd728ef8d7d4159abac6 Mon Sep 17 00:00:00 2001
From: Michele Di Giorgio <michele.digiorgio@arm.com>
Date: Fri, 12 Feb 2021 17:34:17 +0000
Subject: Fix data layout retention and handling of leftovers when there is no
 padding

Resolves COMPMID-4258

Change-Id: I8782bf725cd0d376d538021406eb1f5be962b2cb
Signed-off-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/c/VisualCompute/ComputeLibrary/+/298627
Reviewed-by: Teresa Charlin Reyes <teresa.charlinreyes@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Comments-Addressed: Teresa Charlin Reyes <teresa.charlinreyes@arm.com>
Tested-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5082
Reviewed-by: TeresaARM <teresa.charlinreyes@arm.com>
---
 .../arm_conv/pooling/pooling_depthfirst_generic.hpp     | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

(limited to 'src/core/NEON/kernels/arm_conv/pooling/pooling_depthfirst_generic.hpp')

diff --git a/src/core/NEON/kernels/arm_conv/pooling/pooling_depthfirst_generic.hpp b/src/core/NEON/kernels/arm_conv/pooling/pooling_depthfirst_generic.hpp
index fa06a0078b..5979862ed8 100644
--- a/src/core/NEON/kernels/arm_conv/pooling/pooling_depthfirst_generic.hpp
+++ b/src/core/NEON/kernels/arm_conv/pooling/pooling_depthfirst_generic.hpp
@@ -191,6 +191,13 @@ class PoolingDepthfirstGeneric : public PoolingCommon<typename strategy::operand
         const auto pad_bottom = static_cast<unsigned int>(std::max<int>(end_in_i - height, 0));
         const auto valid_rows = input_rows() - pad_top - pad_bottom;
 
+        // Compute the number of pooling window rows which are contained in
+        // either the valid region of the input tensor, or the padding.
+        const auto padded_bottom = std::min<unsigned int>(
+          start_in_i + m_args.pool_window.rows, height + padding.bottom
+        );
+        const auto n_total_rows = padded_bottom - start_in_i;
+
         auto outptr_col = outptr_row;
         auto inptr_row = inptr_batch + (start_in_i + pad_top) * ld_input_row;
 
@@ -205,6 +212,13 @@ class PoolingDepthfirstGeneric : public PoolingCommon<typename strategy::operand
           const auto pad_right = static_cast<unsigned int>(std::max<int>(0, end_in_j - width));
           const auto valid_cols = input_cols() - pad_left - pad_right;
 
+          // Compute the number of pooling window columns which are contained
+          // in either the valid region of the input tensor, or the padding.
+          const auto padded_right = std::min<unsigned int>(
+            start_in_j + m_args.pool_window.cols, width + padding.right
+          );
+          const auto n_total_cols = padded_right - start_in_j;
+
           // Construct the input pointer array - fill in all valid points
           // contiguously.
           const TInput **ptrs = inptr_array;
@@ -222,7 +236,8 @@ class PoolingDepthfirstGeneric : public PoolingCommon<typename strategy::operand
 
           // Compute the number of valid cells
           const auto valid_cells = valid_rows * valid_cols;
-          const auto window_cells = m_args.exclude_padding ? valid_cells : input_rows() * input_cols();
+          const auto cells_in_range = n_total_rows * n_total_cols;
+          const auto window_cells = m_args.exclude_padding ? valid_cells : cells_in_range;
 
           // Get the output pointer for this call
           TOutput *outptr = outptr_col;
-- 
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