MLBEDSW-3903: Bug fix PAD operator

- Added checks for unsupported pad sizes in PAD operator
- Bug fix right pad/bottom pad calculation when replacing PAD operator
  by hardware padding

Change-Id: Ib84be711277d987052f14352ab386e0e0b774987
Signed-off-by: Louis Verhaard <louis.verhaard@arm.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/ethosu/vela/operation.py b/ethosu/vela/operation.py
index 73953cec..963d9e69 100644
--- a/ethosu/vela/operation.py
+++ b/ethosu/vela/operation.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2020 Arm Limited or its affiliates. All rights reserved.
+# Copyright (C) 2020-2021 Arm Limited or its affiliates. All rights reserved.
 #
 # SPDX-License-Identifier: Apache-2.0
 #
@@ -22,6 +22,7 @@ from typing import Any
 from typing import Dict
 from typing import List
 from typing import Optional
+from typing import Tuple
 from typing import TYPE_CHECKING
 
 from .errors import VelaError
@@ -68,6 +69,10 @@ class Kernel:
     def area_height(self) -> int:
         return (self.height - 1) * self.dilation.y + 1
 
+    def dilated_wh(self) -> Tuple[int, int]:
+        """Returns the dilated kernel width/height"""
+        return self.dilation.x * (self.width - 1) + 1, self.dilation.y * (self.height - 1) + 1
+
     def __str__(self):
         return f"w={self.width}, h={self.height}, stride={tuple(self.stride)}, dilation={tuple(self.dilation)}"