MLBEDSW-3694 Replace padding with enum

Use an Enum instead of a bytestring to specify VALID or SAME padding

Signed-off-by: Michael McGeagh <michael.mcgeagh@arm.com>
Change-Id: I4e87f8c32b3bfac176d822a68de061e85a558fce

1 files changed, 6 insertions, 5 deletions

diff --git a/ethosu/vela/supported_operators.py b/ethosu/vela/supported_operators.py
index a1fcf6ab..f2c2eb9e 100644
--- a/ethosu/vela/supported_operators.py
+++ b/ethosu/vela/supported_operators.py
@@ -24,6 +24,7 @@ from .data_type import DataType
 from .numeric_util import is_integer
 from .operation import get_slice_offsets
 from .operation import Op
+from .operation import Padding
 from .tensor import check_quantized_tens_scaling_equal
 from .tflite_mapping import BUILTIN_OPERATOR_UNKNOWN
 from .tflite_mapping import optype_to_builtintype
@@ -569,7 +570,7 @@ class SupportedOperators:
     @staticmethod
     def constraint_tconv_same(op):
         "SAME padding: OFM dimensions must equal IFM dimensions multiplied by stride"
-        if op.attrs["padding"] == b"SAME":
+        if op.attrs["padding"] == Padding.SAME:
             w = op.kernel.stride.x
             h = op.kernel.stride.y
             ifm_shape = op.ifm.shape
@@ -582,7 +583,7 @@ class SupportedOperators:
     def constraint_tconv_valid(op):
         """VALID padding: OFM dimensions must equal IFM dimensions multiplied by stride,
                   minus difference between kernel size and stride"""
-        if op.attrs["padding"] == b"VALID":
+        if op.attrs["padding"] == Padding.VALID:
             s_w = op.kernel.stride.x
             s_h = op.kernel.stride.y
             k_w = op.kernel.width
@@ -626,7 +627,7 @@ class SupportedOperators:
     @docstring_format_args(filter_range)
     def constraint_filter_range(cls, op):
         "Kernel filter values for both width and height must be in the range [{}, {}]"
-        if op.attrs["padding"] == b"SAME":
+        if op.attrs["padding"] == Padding.SAME:
             w = op.kernel.width
             h = op.kernel.height
             filter_min, filter_max = cls.filter_range
@@ -656,7 +657,7 @@ class SupportedOperators:
     @docstring_format_args(filter_height_range)
     def constraint_filter_height_range_valid_pad(op):
         "VALID padding: Kernel filter height must be in the range [{}, {}]"
-        if op.attrs["padding"] == b"VALID":
+        if op.attrs["padding"] == Padding.VALID:
             return SupportedOperators.constraint_filter_height_range(op)
         return True, "Op has padding=SAME"
 
@@ -664,7 +665,7 @@ class SupportedOperators:
     @docstring_format_args(filter_product_range)
     def constraint_filter_product_range_valid_pad(op):
         "VALID padding: Product of kernel filter width and height must be in the range [{}, {}]"
-        if op.attrs["padding"] == b"VALID":
+        if op.attrs["padding"] == Padding.VALID:
             return SupportedOperators.constraint_filter_product_range(op)
         return True, "Op has padding=SAME"