diff --git a/ethosu/vela/operation.py b/ethosu/vela/operation.py
index ffa4717..ca833e2 100644
--- a/ethosu/vela/operation.py
+++ b/ethosu/vela/operation.py
@@ -292,6 +292,19 @@
     Where = OperatorInfo()
     While = OperatorInfo()
     ZerosLike = OperatorInfo()
+    CallOnce = OperatorInfo()
+    BroadcastTo = OperatorInfo()
+    Rfft2D = OperatorInfo()
+    Conv3D = OperatorInfo()
+    Imag = OperatorInfo()
+    Real = OperatorInfo()
+    ComplexAbs = OperatorInfo()
+    Hashtable = OperatorInfo()
+    HashtableFind = OperatorInfo()
+    HashtableImport = OperatorInfo()
+    HashtableSize = OperatorInfo()
+    ReduceAll = OperatorInfo()
+    Conv3DTranspose = OperatorInfo()
 
     @property
     def info(self):
diff --git a/ethosu/vela/tflite/AbsOptions.py b/ethosu/vela/tflite/AbsOptions.py
index 0cbfb8c..3da6cb0 100644
--- a/ethosu/vela/tflite/AbsOptions.py
+++ b/ethosu/vela/tflite/AbsOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def AbsOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # AbsOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/AddNOptions.py b/ethosu/vela/tflite/AddNOptions.py
index b5c2ddb..a29858b 100644
--- a/ethosu/vela/tflite/AddNOptions.py
+++ b/ethosu/vela/tflite/AddNOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def AddNOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # AddNOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/AddOptions.py b/ethosu/vela/tflite/AddOptions.py
index 154e6d1..f0a232d 100644
--- a/ethosu/vela/tflite/AddOptions.py
+++ b/ethosu/vela/tflite/AddOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def AddOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # AddOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ArgMaxOptions.py b/ethosu/vela/tflite/ArgMaxOptions.py
index fbf1415..741135d 100644
--- a/ethosu/vela/tflite/ArgMaxOptions.py
+++ b/ethosu/vela/tflite/ArgMaxOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ArgMaxOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ArgMaxOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ArgMinOptions.py b/ethosu/vela/tflite/ArgMinOptions.py
index 120fdca..f62455f 100644
--- a/ethosu/vela/tflite/ArgMinOptions.py
+++ b/ethosu/vela/tflite/ArgMinOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ArgMinOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ArgMinOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/BatchMatMulOptions.py b/ethosu/vela/tflite/BatchMatMulOptions.py
index 5be6683..771c36e 100644
--- a/ethosu/vela/tflite/BatchMatMulOptions.py
+++ b/ethosu/vela/tflite/BatchMatMulOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def BatchMatMulOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # BatchMatMulOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -32,7 +36,15 @@
             return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
         return False
 
-def BatchMatMulOptionsStart(builder): builder.StartObject(2)
+    # BatchMatMulOptions
+    def AsymmetricQuantizeInputs(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        if o != 0:
+            return bool(self._tab.Get(flatbuffers.number_types.BoolFlags, o + self._tab.Pos))
+        return False
+
+def BatchMatMulOptionsStart(builder): builder.StartObject(3)
 def BatchMatMulOptionsAddAdjX(builder, adjX): builder.PrependBoolSlot(0, adjX, 0)
 def BatchMatMulOptionsAddAdjY(builder, adjY): builder.PrependBoolSlot(1, adjY, 0)
+def BatchMatMulOptionsAddAsymmetricQuantizeInputs(builder, asymmetricQuantizeInputs): builder.PrependBoolSlot(2, asymmetricQuantizeInputs, 0)
 def BatchMatMulOptionsEnd(builder): return builder.EndObject()
diff --git a/ethosu/vela/tflite/BatchToSpaceNDOptions.py b/ethosu/vela/tflite/BatchToSpaceNDOptions.py
index 3ddcfd3..8398ca1 100644
--- a/ethosu/vela/tflite/BatchToSpaceNDOptions.py
+++ b/ethosu/vela/tflite/BatchToSpaceNDOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def BatchToSpaceNDOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # BatchToSpaceNDOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/BidirectionalSequenceLSTMOptions.py b/ethosu/vela/tflite/BidirectionalSequenceLSTMOptions.py
index 0a0a83b..c8af8e2 100644
--- a/ethosu/vela/tflite/BidirectionalSequenceLSTMOptions.py
+++ b/ethosu/vela/tflite/BidirectionalSequenceLSTMOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def BidirectionalSequenceLSTMOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # BidirectionalSequenceLSTMOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/BidirectionalSequenceRNNOptions.py b/ethosu/vela/tflite/BidirectionalSequenceRNNOptions.py
index e1f66ce..4c6218f 100644
--- a/ethosu/vela/tflite/BidirectionalSequenceRNNOptions.py
+++ b/ethosu/vela/tflite/BidirectionalSequenceRNNOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def BidirectionalSequenceRNNOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # BidirectionalSequenceRNNOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/BroadcastToOptions.py b/ethosu/vela/tflite/BroadcastToOptions.py
new file mode 100644
index 0000000..5d11a9e
--- /dev/null
+++ b/ethosu/vela/tflite/BroadcastToOptions.py
@@ -0,0 +1,26 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: tflite
+
+import flatbuffers
+
+class BroadcastToOptions(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAsBroadcastToOptions(cls, buf, offset):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = BroadcastToOptions()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def BroadcastToOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
+    # BroadcastToOptions
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+def BroadcastToOptionsStart(builder): builder.StartObject(0)
+def BroadcastToOptionsEnd(builder): return builder.EndObject()
diff --git a/ethosu/vela/tflite/Buffer.py b/ethosu/vela/tflite/Buffer.py
index 754dee3..387d7e9 100644
--- a/ethosu/vela/tflite/Buffer.py
+++ b/ethosu/vela/tflite/Buffer.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def BufferBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # Buffer
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -40,6 +44,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # Buffer
+    def DataIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
 def BufferStart(builder): builder.StartObject(1)
 def BufferAddData(builder, data): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(data), 0)
 def BufferStartDataVector(builder, numElems): return builder.StartVector(1, numElems, 1)
diff --git a/ethosu/vela/tflite/BuiltinOperator.py b/ethosu/vela/tflite/BuiltinOperator.py
index 73fed9b..46dcab7 100644
--- a/ethosu/vela/tflite/BuiltinOperator.py
+++ b/ethosu/vela/tflite/BuiltinOperator.py
@@ -132,4 +132,17 @@
     BATCH_MATMUL = 126
     PLACEHOLDER_FOR_GREATER_OP_CODES = 127
     CUMSUM = 128
+    CALL_ONCE = 129
+    BROADCAST_TO = 130
+    RFFT2D = 131
+    CONV_3D = 132
+    IMAG = 133
+    REAL = 134
+    COMPLEX_ABS = 135
+    HASHTABLE = 136
+    HASHTABLE_FIND = 137
+    HASHTABLE_IMPORT = 138
+    HASHTABLE_SIZE = 139
+    REDUCE_ALL = 140
+    CONV_3D_TRANSPOSE = 141
 
diff --git a/ethosu/vela/tflite/BuiltinOptions.py b/ethosu/vela/tflite/BuiltinOptions.py
index 6be2d43..d807696 100644
--- a/ethosu/vela/tflite/BuiltinOptions.py
+++ b/ethosu/vela/tflite/BuiltinOptions.py
@@ -106,4 +106,12 @@
     SegmentSumOptions = 100
     BatchMatMulOptions = 101
     CumsumOptions = 102
+    CallOnceOptions = 103
+    BroadcastToOptions = 104
+    Rfft2dOptions = 105
+    Conv3DOptions = 106
+    HashtableOptions = 107
+    HashtableFindOptions = 108
+    HashtableImportOptions = 109
+    HashtableSizeOptions = 110
 
diff --git a/ethosu/vela/tflite/CallOnceOptions.py b/ethosu/vela/tflite/CallOnceOptions.py
new file mode 100644
index 0000000..5714c33
--- /dev/null
+++ b/ethosu/vela/tflite/CallOnceOptions.py
@@ -0,0 +1,34 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: tflite
+
+import flatbuffers
+
+class CallOnceOptions(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAsCallOnceOptions(cls, buf, offset):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = CallOnceOptions()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def CallOnceOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
+    # CallOnceOptions
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # CallOnceOptions
+    def InitSubgraphIndex(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 0
+
+def CallOnceOptionsStart(builder): builder.StartObject(1)
+def CallOnceOptionsAddInitSubgraphIndex(builder, initSubgraphIndex): builder.PrependInt32Slot(0, initSubgraphIndex, 0)
+def CallOnceOptionsEnd(builder): return builder.EndObject()
diff --git a/ethosu/vela/tflite/CallOptions.py b/ethosu/vela/tflite/CallOptions.py
index 5ae2eea..3216f8a 100644
--- a/ethosu/vela/tflite/CallOptions.py
+++ b/ethosu/vela/tflite/CallOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def CallOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # CallOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/CastOptions.py b/ethosu/vela/tflite/CastOptions.py
index 70ae2e3..1f00765 100644
--- a/ethosu/vela/tflite/CastOptions.py
+++ b/ethosu/vela/tflite/CastOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def CastOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # CastOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ConcatEmbeddingsOptions.py b/ethosu/vela/tflite/ConcatEmbeddingsOptions.py
index 9d26c51..b8d5538 100644
--- a/ethosu/vela/tflite/ConcatEmbeddingsOptions.py
+++ b/ethosu/vela/tflite/ConcatEmbeddingsOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ConcatEmbeddingsOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ConcatEmbeddingsOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -48,6 +52,11 @@
         return 0
 
     # ConcatEmbeddingsOptions
+    def NumColumnsPerChannelIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # ConcatEmbeddingsOptions
     def EmbeddingDimPerChannel(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
         if o != 0:
@@ -69,6 +78,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # ConcatEmbeddingsOptions
+    def EmbeddingDimPerChannelIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        return o == 0
+
 def ConcatEmbeddingsOptionsStart(builder): builder.StartObject(3)
 def ConcatEmbeddingsOptionsAddNumChannels(builder, numChannels): builder.PrependInt32Slot(0, numChannels, 0)
 def ConcatEmbeddingsOptionsAddNumColumnsPerChannel(builder, numColumnsPerChannel): builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(numColumnsPerChannel), 0)
diff --git a/ethosu/vela/tflite/ConcatenationOptions.py b/ethosu/vela/tflite/ConcatenationOptions.py
index c8e0b6a..f6928a6 100644
--- a/ethosu/vela/tflite/ConcatenationOptions.py
+++ b/ethosu/vela/tflite/ConcatenationOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ConcatenationOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ConcatenationOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/Conv2DOptions.py b/ethosu/vela/tflite/Conv2DOptions.py
index ef49f75..a05b39c 100644
--- a/ethosu/vela/tflite/Conv2DOptions.py
+++ b/ethosu/vela/tflite/Conv2DOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def Conv2DOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # Conv2DOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/Conv3DOptions.py b/ethosu/vela/tflite/Conv3DOptions.py
new file mode 100644
index 0000000..0f99860
--- /dev/null
+++ b/ethosu/vela/tflite/Conv3DOptions.py
@@ -0,0 +1,90 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: tflite
+
+import flatbuffers
+
+class Conv3DOptions(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAsConv3DOptions(cls, buf, offset):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = Conv3DOptions()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def Conv3DOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
+    # Conv3DOptions
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # Conv3DOptions
+    def Padding(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int8Flags, o + self._tab.Pos)
+        return 0
+
+    # Conv3DOptions
+    def StrideD(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 0
+
+    # Conv3DOptions
+    def StrideW(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 0
+
+    # Conv3DOptions
+    def StrideH(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 0
+
+    # Conv3DOptions
+    def FusedActivationFunction(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int8Flags, o + self._tab.Pos)
+        return 0
+
+    # Conv3DOptions
+    def DilationDFactor(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 1
+
+    # Conv3DOptions
+    def DilationWFactor(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(16))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 1
+
+    # Conv3DOptions
+    def DilationHFactor(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(18))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 1
+
+def Conv3DOptionsStart(builder): builder.StartObject(8)
+def Conv3DOptionsAddPadding(builder, padding): builder.PrependInt8Slot(0, padding, 0)
+def Conv3DOptionsAddStrideD(builder, strideD): builder.PrependInt32Slot(1, strideD, 0)
+def Conv3DOptionsAddStrideW(builder, strideW): builder.PrependInt32Slot(2, strideW, 0)
+def Conv3DOptionsAddStrideH(builder, strideH): builder.PrependInt32Slot(3, strideH, 0)
+def Conv3DOptionsAddFusedActivationFunction(builder, fusedActivationFunction): builder.PrependInt8Slot(4, fusedActivationFunction, 0)
+def Conv3DOptionsAddDilationDFactor(builder, dilationDFactor): builder.PrependInt32Slot(5, dilationDFactor, 1)
+def Conv3DOptionsAddDilationWFactor(builder, dilationWFactor): builder.PrependInt32Slot(6, dilationWFactor, 1)
+def Conv3DOptionsAddDilationHFactor(builder, dilationHFactor): builder.PrependInt32Slot(7, dilationHFactor, 1)
+def Conv3DOptionsEnd(builder): return builder.EndObject()
diff --git a/ethosu/vela/tflite/CosOptions.py b/ethosu/vela/tflite/CosOptions.py
index 7fbf848..12d4926 100644
--- a/ethosu/vela/tflite/CosOptions.py
+++ b/ethosu/vela/tflite/CosOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def CosOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # CosOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/CumsumOptions.py b/ethosu/vela/tflite/CumsumOptions.py
index 33e086e..91c4586 100644
--- a/ethosu/vela/tflite/CumsumOptions.py
+++ b/ethosu/vela/tflite/CumsumOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def CumsumOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # CumsumOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/CustomQuantization.py b/ethosu/vela/tflite/CustomQuantization.py
index 21ec0da..f0ed6f0 100644
--- a/ethosu/vela/tflite/CustomQuantization.py
+++ b/ethosu/vela/tflite/CustomQuantization.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def CustomQuantizationBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # CustomQuantization
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -40,6 +44,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # CustomQuantization
+    def CustomIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
 def CustomQuantizationStart(builder): builder.StartObject(1)
 def CustomQuantizationAddCustom(builder, custom): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(custom), 0)
 def CustomQuantizationStartCustomVector(builder, numElems): return builder.StartVector(1, numElems, 1)
diff --git a/ethosu/vela/tflite/DensifyOptions.py b/ethosu/vela/tflite/DensifyOptions.py
index 12cbfb2..067b871 100644
--- a/ethosu/vela/tflite/DensifyOptions.py
+++ b/ethosu/vela/tflite/DensifyOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def DensifyOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # DensifyOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/DepthToSpaceOptions.py b/ethosu/vela/tflite/DepthToSpaceOptions.py
index 97b93aa..e6b44f4 100644
--- a/ethosu/vela/tflite/DepthToSpaceOptions.py
+++ b/ethosu/vela/tflite/DepthToSpaceOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def DepthToSpaceOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # DepthToSpaceOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/DepthwiseConv2DOptions.py b/ethosu/vela/tflite/DepthwiseConv2DOptions.py
index 9689383..50dcdbf 100644
--- a/ethosu/vela/tflite/DepthwiseConv2DOptions.py
+++ b/ethosu/vela/tflite/DepthwiseConv2DOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def DepthwiseConv2DOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # DepthwiseConv2DOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/DequantizeOptions.py b/ethosu/vela/tflite/DequantizeOptions.py
index 5ef8b8d..bd9f2e2 100644
--- a/ethosu/vela/tflite/DequantizeOptions.py
+++ b/ethosu/vela/tflite/DequantizeOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def DequantizeOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # DequantizeOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/DimensionMetadata.py b/ethosu/vela/tflite/DimensionMetadata.py
index c9fe7cd..1f8b60d 100644
--- a/ethosu/vela/tflite/DimensionMetadata.py
+++ b/ethosu/vela/tflite/DimensionMetadata.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def DimensionMetadataBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # DimensionMetadata
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/DivOptions.py b/ethosu/vela/tflite/DivOptions.py
index 905a3be..2988a8e 100644
--- a/ethosu/vela/tflite/DivOptions.py
+++ b/ethosu/vela/tflite/DivOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def DivOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # DivOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/EmbeddingLookupSparseOptions.py b/ethosu/vela/tflite/EmbeddingLookupSparseOptions.py
index 7d9c144..eaa8356 100644
--- a/ethosu/vela/tflite/EmbeddingLookupSparseOptions.py
+++ b/ethosu/vela/tflite/EmbeddingLookupSparseOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def EmbeddingLookupSparseOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # EmbeddingLookupSparseOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/EqualOptions.py b/ethosu/vela/tflite/EqualOptions.py
index f787ef8..b7b14bb 100644
--- a/ethosu/vela/tflite/EqualOptions.py
+++ b/ethosu/vela/tflite/EqualOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def EqualOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # EqualOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ExpOptions.py b/ethosu/vela/tflite/ExpOptions.py
index eac1456..ea1cfea 100644
--- a/ethosu/vela/tflite/ExpOptions.py
+++ b/ethosu/vela/tflite/ExpOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ExpOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ExpOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ExpandDimsOptions.py b/ethosu/vela/tflite/ExpandDimsOptions.py
index 69d6366..2350c6e 100644
--- a/ethosu/vela/tflite/ExpandDimsOptions.py
+++ b/ethosu/vela/tflite/ExpandDimsOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ExpandDimsOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ExpandDimsOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/FakeQuantOptions.py b/ethosu/vela/tflite/FakeQuantOptions.py
index 46c371c..d97da18 100644
--- a/ethosu/vela/tflite/FakeQuantOptions.py
+++ b/ethosu/vela/tflite/FakeQuantOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def FakeQuantOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # FakeQuantOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/FillOptions.py b/ethosu/vela/tflite/FillOptions.py
index 5a1e651..f6b2ca3 100644
--- a/ethosu/vela/tflite/FillOptions.py
+++ b/ethosu/vela/tflite/FillOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def FillOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # FillOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/FloorDivOptions.py b/ethosu/vela/tflite/FloorDivOptions.py
index 64b474f..53a3c4c 100644
--- a/ethosu/vela/tflite/FloorDivOptions.py
+++ b/ethosu/vela/tflite/FloorDivOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def FloorDivOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # FloorDivOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/FloorModOptions.py b/ethosu/vela/tflite/FloorModOptions.py
index 37c8e5a..6e5f679 100644
--- a/ethosu/vela/tflite/FloorModOptions.py
+++ b/ethosu/vela/tflite/FloorModOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def FloorModOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # FloorModOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/FullyConnectedOptions.py b/ethosu/vela/tflite/FullyConnectedOptions.py
index 5475e3d..601b57d 100644
--- a/ethosu/vela/tflite/FullyConnectedOptions.py
+++ b/ethosu/vela/tflite/FullyConnectedOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def FullyConnectedOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # FullyConnectedOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/GatherNdOptions.py b/ethosu/vela/tflite/GatherNdOptions.py
index f515eb5..db09182 100644
--- a/ethosu/vela/tflite/GatherNdOptions.py
+++ b/ethosu/vela/tflite/GatherNdOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def GatherNdOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # GatherNdOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/GatherOptions.py b/ethosu/vela/tflite/GatherOptions.py
index 9fbc3e4..5da9a9b 100644
--- a/ethosu/vela/tflite/GatherOptions.py
+++ b/ethosu/vela/tflite/GatherOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def GatherOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # GatherOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -25,6 +29,14 @@
             return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
         return 0
 
-def GatherOptionsStart(builder): builder.StartObject(1)
+    # GatherOptions
+    def BatchDims(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 0
+
+def GatherOptionsStart(builder): builder.StartObject(2)
 def GatherOptionsAddAxis(builder, axis): builder.PrependInt32Slot(0, axis, 0)
+def GatherOptionsAddBatchDims(builder, batchDims): builder.PrependInt32Slot(1, batchDims, 0)
 def GatherOptionsEnd(builder): return builder.EndObject()
diff --git a/ethosu/vela/tflite/GreaterEqualOptions.py b/ethosu/vela/tflite/GreaterEqualOptions.py
index a29e200..03a86fa 100644
--- a/ethosu/vela/tflite/GreaterEqualOptions.py
+++ b/ethosu/vela/tflite/GreaterEqualOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def GreaterEqualOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # GreaterEqualOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/GreaterOptions.py b/ethosu/vela/tflite/GreaterOptions.py
index 59d6350..593e0d7 100644
--- a/ethosu/vela/tflite/GreaterOptions.py
+++ b/ethosu/vela/tflite/GreaterOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def GreaterOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # GreaterOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/HardSwishOptions.py b/ethosu/vela/tflite/HardSwishOptions.py
index 4f6a520..cbbf99c 100644
--- a/ethosu/vela/tflite/HardSwishOptions.py
+++ b/ethosu/vela/tflite/HardSwishOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def HardSwishOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # HardSwishOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/HashtableFindOptions.py b/ethosu/vela/tflite/HashtableFindOptions.py
new file mode 100644
index 0000000..cc74ace
--- /dev/null
+++ b/ethosu/vela/tflite/HashtableFindOptions.py
@@ -0,0 +1,26 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: tflite
+
+import flatbuffers
+
+class HashtableFindOptions(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAsHashtableFindOptions(cls, buf, offset):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = HashtableFindOptions()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def HashtableFindOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
+    # HashtableFindOptions
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+def HashtableFindOptionsStart(builder): builder.StartObject(0)
+def HashtableFindOptionsEnd(builder): return builder.EndObject()
diff --git a/ethosu/vela/tflite/HashtableImportOptions.py b/ethosu/vela/tflite/HashtableImportOptions.py
new file mode 100644
index 0000000..64763c3
--- /dev/null
+++ b/ethosu/vela/tflite/HashtableImportOptions.py
@@ -0,0 +1,26 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: tflite
+
+import flatbuffers
+
+class HashtableImportOptions(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAsHashtableImportOptions(cls, buf, offset):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = HashtableImportOptions()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def HashtableImportOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
+    # HashtableImportOptions
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+def HashtableImportOptionsStart(builder): builder.StartObject(0)
+def HashtableImportOptionsEnd(builder): return builder.EndObject()
diff --git a/ethosu/vela/tflite/HashtableOptions.py b/ethosu/vela/tflite/HashtableOptions.py
new file mode 100644
index 0000000..646085f
--- /dev/null
+++ b/ethosu/vela/tflite/HashtableOptions.py
@@ -0,0 +1,50 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: tflite
+
+import flatbuffers
+
+class HashtableOptions(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAsHashtableOptions(cls, buf, offset):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = HashtableOptions()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def HashtableOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
+    # HashtableOptions
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+    # HashtableOptions
+    def TableId(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int32Flags, o + self._tab.Pos)
+        return 0
+
+    # HashtableOptions
+    def KeyDtype(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int8Flags, o + self._tab.Pos)
+        return 0
+
+    # HashtableOptions
+    def ValueDtype(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        if o != 0:
+            return self._tab.Get(flatbuffers.number_types.Int8Flags, o + self._tab.Pos)
+        return 0
+
+def HashtableOptionsStart(builder): builder.StartObject(3)
+def HashtableOptionsAddTableId(builder, tableId): builder.PrependInt32Slot(0, tableId, 0)
+def HashtableOptionsAddKeyDtype(builder, keyDtype): builder.PrependInt8Slot(1, keyDtype, 0)
+def HashtableOptionsAddValueDtype(builder, valueDtype): builder.PrependInt8Slot(2, valueDtype, 0)
+def HashtableOptionsEnd(builder): return builder.EndObject()
diff --git a/ethosu/vela/tflite/HashtableSizeOptions.py b/ethosu/vela/tflite/HashtableSizeOptions.py
new file mode 100644
index 0000000..7baa019
--- /dev/null
+++ b/ethosu/vela/tflite/HashtableSizeOptions.py
@@ -0,0 +1,26 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: tflite
+
+import flatbuffers
+
+class HashtableSizeOptions(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAsHashtableSizeOptions(cls, buf, offset):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = HashtableSizeOptions()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def HashtableSizeOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
+    # HashtableSizeOptions
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+def HashtableSizeOptionsStart(builder): builder.StartObject(0)
+def HashtableSizeOptionsEnd(builder): return builder.EndObject()
diff --git a/ethosu/vela/tflite/IfOptions.py b/ethosu/vela/tflite/IfOptions.py
index 13f4e69..aad7276 100644
--- a/ethosu/vela/tflite/IfOptions.py
+++ b/ethosu/vela/tflite/IfOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def IfOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # IfOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/Int32Vector.py b/ethosu/vela/tflite/Int32Vector.py
index e70851b..0575b2e 100644
--- a/ethosu/vela/tflite/Int32Vector.py
+++ b/ethosu/vela/tflite/Int32Vector.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def Int32VectorBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # Int32Vector
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -40,6 +44,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # Int32Vector
+    def ValuesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
 def Int32VectorStart(builder): builder.StartObject(1)
 def Int32VectorAddValues(builder, values): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(values), 0)
 def Int32VectorStartValuesVector(builder, numElems): return builder.StartVector(4, numElems, 4)
diff --git a/ethosu/vela/tflite/L2NormOptions.py b/ethosu/vela/tflite/L2NormOptions.py
index 38bdf57..0b1212f 100644
--- a/ethosu/vela/tflite/L2NormOptions.py
+++ b/ethosu/vela/tflite/L2NormOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def L2NormOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # L2NormOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/LSHProjectionOptions.py b/ethosu/vela/tflite/LSHProjectionOptions.py
index ad550be..b545e78 100644
--- a/ethosu/vela/tflite/LSHProjectionOptions.py
+++ b/ethosu/vela/tflite/LSHProjectionOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def LSHProjectionOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # LSHProjectionOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/LSTMOptions.py b/ethosu/vela/tflite/LSTMOptions.py
index 2f519bc..45b4af2 100644
--- a/ethosu/vela/tflite/LSTMOptions.py
+++ b/ethosu/vela/tflite/LSTMOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def LSTMOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # LSTMOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/LeakyReluOptions.py b/ethosu/vela/tflite/LeakyReluOptions.py
index b61b21d..5b8c647 100644
--- a/ethosu/vela/tflite/LeakyReluOptions.py
+++ b/ethosu/vela/tflite/LeakyReluOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def LeakyReluOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # LeakyReluOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/LessEqualOptions.py b/ethosu/vela/tflite/LessEqualOptions.py
index d49b728..8465ff3 100644
--- a/ethosu/vela/tflite/LessEqualOptions.py
+++ b/ethosu/vela/tflite/LessEqualOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def LessEqualOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # LessEqualOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/LessOptions.py b/ethosu/vela/tflite/LessOptions.py
index 469cb0b..93f3edc 100644
--- a/ethosu/vela/tflite/LessOptions.py
+++ b/ethosu/vela/tflite/LessOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def LessOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # LessOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/LocalResponseNormalizationOptions.py b/ethosu/vela/tflite/LocalResponseNormalizationOptions.py
index db87560..5f4399a 100644
--- a/ethosu/vela/tflite/LocalResponseNormalizationOptions.py
+++ b/ethosu/vela/tflite/LocalResponseNormalizationOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def LocalResponseNormalizationOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # LocalResponseNormalizationOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/LogSoftmaxOptions.py b/ethosu/vela/tflite/LogSoftmaxOptions.py
index 4789385..584d628 100644
--- a/ethosu/vela/tflite/LogSoftmaxOptions.py
+++ b/ethosu/vela/tflite/LogSoftmaxOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def LogSoftmaxOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # LogSoftmaxOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/LogicalAndOptions.py b/ethosu/vela/tflite/LogicalAndOptions.py
index cee1cdb..1ec0e6e 100644
--- a/ethosu/vela/tflite/LogicalAndOptions.py
+++ b/ethosu/vela/tflite/LogicalAndOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def LogicalAndOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # LogicalAndOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/LogicalNotOptions.py b/ethosu/vela/tflite/LogicalNotOptions.py
index 9971450..ce66ec3 100644
--- a/ethosu/vela/tflite/LogicalNotOptions.py
+++ b/ethosu/vela/tflite/LogicalNotOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def LogicalNotOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # LogicalNotOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/LogicalOrOptions.py b/ethosu/vela/tflite/LogicalOrOptions.py
index e94a5de..ae4b36b 100644
--- a/ethosu/vela/tflite/LogicalOrOptions.py
+++ b/ethosu/vela/tflite/LogicalOrOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def LogicalOrOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # LogicalOrOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/MatrixDiagOptions.py b/ethosu/vela/tflite/MatrixDiagOptions.py
index 0f64e65..8511365 100644
--- a/ethosu/vela/tflite/MatrixDiagOptions.py
+++ b/ethosu/vela/tflite/MatrixDiagOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def MatrixDiagOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # MatrixDiagOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/MatrixSetDiagOptions.py b/ethosu/vela/tflite/MatrixSetDiagOptions.py
index 14178cf..361d3b6 100644
--- a/ethosu/vela/tflite/MatrixSetDiagOptions.py
+++ b/ethosu/vela/tflite/MatrixSetDiagOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def MatrixSetDiagOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # MatrixSetDiagOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/MaximumMinimumOptions.py b/ethosu/vela/tflite/MaximumMinimumOptions.py
index f0806e2..86b94f9 100644
--- a/ethosu/vela/tflite/MaximumMinimumOptions.py
+++ b/ethosu/vela/tflite/MaximumMinimumOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def MaximumMinimumOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # MaximumMinimumOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/Metadata.py b/ethosu/vela/tflite/Metadata.py
index 273e51e..bd2bcfd 100644
--- a/ethosu/vela/tflite/Metadata.py
+++ b/ethosu/vela/tflite/Metadata.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def MetadataBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # Metadata
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/MirrorPadOptions.py b/ethosu/vela/tflite/MirrorPadOptions.py
index 254ae21..fa40855 100644
--- a/ethosu/vela/tflite/MirrorPadOptions.py
+++ b/ethosu/vela/tflite/MirrorPadOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def MirrorPadOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # MirrorPadOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/Model.py b/ethosu/vela/tflite/Model.py
index 52aac02..2593752 100644
--- a/ethosu/vela/tflite/Model.py
+++ b/ethosu/vela/tflite/Model.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ModelBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # Model
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -46,6 +50,11 @@
         return 0
 
     # Model
+    def OperatorCodesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # Model
     def Subgraphs(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
         if o != 0:
@@ -66,6 +75,11 @@
         return 0
 
     # Model
+    def SubgraphsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        return o == 0
+
+    # Model
     def Description(self):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
         if o != 0:
@@ -93,6 +107,11 @@
         return 0
 
     # Model
+    def BuffersIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
+        return o == 0
+
+    # Model
     def MetadataBuffer(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
         if o != 0:
@@ -115,6 +134,11 @@
         return 0
 
     # Model
+    def MetadataBufferIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        return o == 0
+
+    # Model
     def Metadata(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(16))
         if o != 0:
@@ -135,6 +159,11 @@
         return 0
 
     # Model
+    def MetadataIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(16))
+        return o == 0
+
+    # Model
     def SignatureDefs(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(18))
         if o != 0:
@@ -154,6 +183,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # Model
+    def SignatureDefsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(18))
+        return o == 0
+
 def ModelStart(builder): builder.StartObject(8)
 def ModelAddVersion(builder, version): builder.PrependUint32Slot(0, version, 0)
 def ModelAddOperatorCodes(builder, operatorCodes): builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(operatorCodes), 0)
diff --git a/ethosu/vela/tflite/MulOptions.py b/ethosu/vela/tflite/MulOptions.py
index 55b9506..5b53c4b 100644
--- a/ethosu/vela/tflite/MulOptions.py
+++ b/ethosu/vela/tflite/MulOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def MulOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # MulOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/NegOptions.py b/ethosu/vela/tflite/NegOptions.py
index 05d55c2..9cf217c 100644
--- a/ethosu/vela/tflite/NegOptions.py
+++ b/ethosu/vela/tflite/NegOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def NegOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # NegOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/NonMaxSuppressionV4Options.py b/ethosu/vela/tflite/NonMaxSuppressionV4Options.py
index 6ad10a2..4764bc0 100644
--- a/ethosu/vela/tflite/NonMaxSuppressionV4Options.py
+++ b/ethosu/vela/tflite/NonMaxSuppressionV4Options.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def NonMaxSuppressionV4OptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # NonMaxSuppressionV4Options
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/NonMaxSuppressionV5Options.py b/ethosu/vela/tflite/NonMaxSuppressionV5Options.py
index 99cbdbb..ce84c86 100644
--- a/ethosu/vela/tflite/NonMaxSuppressionV5Options.py
+++ b/ethosu/vela/tflite/NonMaxSuppressionV5Options.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def NonMaxSuppressionV5OptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # NonMaxSuppressionV5Options
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/NotEqualOptions.py b/ethosu/vela/tflite/NotEqualOptions.py
index 4c511e9..b99152d 100644
--- a/ethosu/vela/tflite/NotEqualOptions.py
+++ b/ethosu/vela/tflite/NotEqualOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def NotEqualOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # NotEqualOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/OneHotOptions.py b/ethosu/vela/tflite/OneHotOptions.py
index 793a3e7..7bc9ba3 100644
--- a/ethosu/vela/tflite/OneHotOptions.py
+++ b/ethosu/vela/tflite/OneHotOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def OneHotOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # OneHotOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/Operator.py b/ethosu/vela/tflite/Operator.py
index cbae3da..edec83b 100644
--- a/ethosu/vela/tflite/Operator.py
+++ b/ethosu/vela/tflite/Operator.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def OperatorBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # Operator
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -48,6 +52,11 @@
         return 0
 
     # Operator
+    def InputsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # Operator
     def Outputs(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
         if o != 0:
@@ -70,6 +79,11 @@
         return 0
 
     # Operator
+    def OutputsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        return o == 0
+
+    # Operator
     def BuiltinOptionsType(self):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
         if o != 0:
@@ -109,6 +123,11 @@
         return 0
 
     # Operator
+    def CustomOptionsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(14))
+        return o == 0
+
+    # Operator
     def CustomOptionsFormat(self):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(16))
         if o != 0:
@@ -138,6 +157,11 @@
         return 0
 
     # Operator
+    def MutatingVariableInputsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(18))
+        return o == 0
+
+    # Operator
     def Intermediates(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(20))
         if o != 0:
@@ -159,6 +183,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # Operator
+    def IntermediatesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(20))
+        return o == 0
+
 def OperatorStart(builder): builder.StartObject(9)
 def OperatorAddOpcodeIndex(builder, opcodeIndex): builder.PrependUint32Slot(0, opcodeIndex, 0)
 def OperatorAddInputs(builder, inputs): builder.PrependUOffsetTRelativeSlot(1, flatbuffers.number_types.UOffsetTFlags.py_type(inputs), 0)
diff --git a/ethosu/vela/tflite/OperatorCode.py b/ethosu/vela/tflite/OperatorCode.py
index 5a0ba2a..880c1a5 100644
--- a/ethosu/vela/tflite/OperatorCode.py
+++ b/ethosu/vela/tflite/OperatorCode.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def OperatorCodeBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # OperatorCode
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/PackOptions.py b/ethosu/vela/tflite/PackOptions.py
index 6a8ee2b..2d590c5 100644
--- a/ethosu/vela/tflite/PackOptions.py
+++ b/ethosu/vela/tflite/PackOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def PackOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # PackOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/PadOptions.py b/ethosu/vela/tflite/PadOptions.py
index d0833c6..58d33e5 100644
--- a/ethosu/vela/tflite/PadOptions.py
+++ b/ethosu/vela/tflite/PadOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def PadOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # PadOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/PadV2Options.py b/ethosu/vela/tflite/PadV2Options.py
index 5ea0d70..2b81bdd 100644
--- a/ethosu/vela/tflite/PadV2Options.py
+++ b/ethosu/vela/tflite/PadV2Options.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def PadV2OptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # PadV2Options
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/Pool2DOptions.py b/ethosu/vela/tflite/Pool2DOptions.py
index b8b9f17..031629b 100644
--- a/ethosu/vela/tflite/Pool2DOptions.py
+++ b/ethosu/vela/tflite/Pool2DOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def Pool2DOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # Pool2DOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/PowOptions.py b/ethosu/vela/tflite/PowOptions.py
index 666ca48..b9c9f84 100644
--- a/ethosu/vela/tflite/PowOptions.py
+++ b/ethosu/vela/tflite/PowOptions.py
@@ -14,6 +14,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def PowOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # PowOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/QuantizationParameters.py b/ethosu/vela/tflite/QuantizationParameters.py
index fcd686c..50acb83 100644
--- a/ethosu/vela/tflite/QuantizationParameters.py
+++ b/ethosu/vela/tflite/QuantizationParameters.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class QuantizationParameters(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def QuantizationParametersBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # QuantizationParameters
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -41,6 +47,11 @@
         return 0
 
     # QuantizationParameters
+    def MinIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
+    # QuantizationParameters
     def Max(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
         if o != 0:
@@ -63,6 +74,11 @@
         return 0
 
     # QuantizationParameters
+    def MaxIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # QuantizationParameters
     def Scale(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
         if o != 0:
@@ -85,6 +101,11 @@
         return 0
 
     # QuantizationParameters
+    def ScaleIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        return o == 0
+
+    # QuantizationParameters
     def ZeroPoint(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
         if o != 0:
@@ -107,6 +128,11 @@
         return 0
 
     # QuantizationParameters
+    def ZeroPointIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        return o == 0
+
+    # QuantizationParameters
     def DetailsType(self):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
         if o != 0:
diff --git a/ethosu/vela/tflite/QuantizeOptions.py b/ethosu/vela/tflite/QuantizeOptions.py
index 28af8cc..a2a6bab 100644
--- a/ethosu/vela/tflite/QuantizeOptions.py
+++ b/ethosu/vela/tflite/QuantizeOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class QuantizeOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def QuantizeOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # QuantizeOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/RNNOptions.py b/ethosu/vela/tflite/RNNOptions.py
index 397d716..67bbe78 100644
--- a/ethosu/vela/tflite/RNNOptions.py
+++ b/ethosu/vela/tflite/RNNOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class RNNOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def RNNOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # RNNOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/RangeOptions.py b/ethosu/vela/tflite/RangeOptions.py
index cb705b5..1a5bd0f 100644
--- a/ethosu/vela/tflite/RangeOptions.py
+++ b/ethosu/vela/tflite/RangeOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class RangeOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def RangeOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # RangeOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/RankOptions.py b/ethosu/vela/tflite/RankOptions.py
index 4e4a5ec..37ad8a6 100644
--- a/ethosu/vela/tflite/RankOptions.py
+++ b/ethosu/vela/tflite/RankOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class RankOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def RankOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # RankOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ReducerOptions.py b/ethosu/vela/tflite/ReducerOptions.py
index 93bbde1..56174b0 100644
--- a/ethosu/vela/tflite/ReducerOptions.py
+++ b/ethosu/vela/tflite/ReducerOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class ReducerOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ReducerOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ReducerOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ReshapeOptions.py b/ethosu/vela/tflite/ReshapeOptions.py
index 157d45d..234f438 100644
--- a/ethosu/vela/tflite/ReshapeOptions.py
+++ b/ethosu/vela/tflite/ReshapeOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class ReshapeOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ReshapeOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ReshapeOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -40,6 +46,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # ReshapeOptions
+    def NewShapeIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
 def ReshapeOptionsStart(builder): builder.StartObject(1)
 def ReshapeOptionsAddNewShape(builder, newShape): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(newShape), 0)
 def ReshapeOptionsStartNewShapeVector(builder, numElems): return builder.StartVector(4, numElems, 4)
diff --git a/ethosu/vela/tflite/ResizeBilinearOptions.py b/ethosu/vela/tflite/ResizeBilinearOptions.py
index fb05ca4..d974adb 100644
--- a/ethosu/vela/tflite/ResizeBilinearOptions.py
+++ b/ethosu/vela/tflite/ResizeBilinearOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class ResizeBilinearOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ResizeBilinearOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ResizeBilinearOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ResizeNearestNeighborOptions.py b/ethosu/vela/tflite/ResizeNearestNeighborOptions.py
index e2642ce..9044279 100644
--- a/ethosu/vela/tflite/ResizeNearestNeighborOptions.py
+++ b/ethosu/vela/tflite/ResizeNearestNeighborOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class ResizeNearestNeighborOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ResizeNearestNeighborOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ResizeNearestNeighborOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ReverseSequenceOptions.py b/ethosu/vela/tflite/ReverseSequenceOptions.py
index cbaf96d..4f4e5d2 100644
--- a/ethosu/vela/tflite/ReverseSequenceOptions.py
+++ b/ethosu/vela/tflite/ReverseSequenceOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class ReverseSequenceOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ReverseSequenceOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ReverseSequenceOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ReverseV2Options.py b/ethosu/vela/tflite/ReverseV2Options.py
index dbac936..02d148e 100644
--- a/ethosu/vela/tflite/ReverseV2Options.py
+++ b/ethosu/vela/tflite/ReverseV2Options.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class ReverseV2Options(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ReverseV2OptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ReverseV2Options
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/Rfft2dOptions.py b/ethosu/vela/tflite/Rfft2dOptions.py
new file mode 100644
index 0000000..da062ec
--- /dev/null
+++ b/ethosu/vela/tflite/Rfft2dOptions.py
@@ -0,0 +1,28 @@
+# automatically generated by the FlatBuffers compiler, do not modify
+
+# namespace: tflite
+
+import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
+
+class Rfft2dOptions(object):
+    __slots__ = ['_tab']
+
+    @classmethod
+    def GetRootAsRfft2dOptions(cls, buf, offset):
+        n = flatbuffers.encode.Get(flatbuffers.packer.uoffset, buf, offset)
+        x = Rfft2dOptions()
+        x.Init(buf, n + offset)
+        return x
+
+    @classmethod
+    def Rfft2dOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
+    # Rfft2dOptions
+    def Init(self, buf, pos):
+        self._tab = flatbuffers.table.Table(buf, pos)
+
+def Rfft2dOptionsStart(builder): builder.StartObject(0)
+def Rfft2dOptionsEnd(builder): return builder.EndObject()
diff --git a/ethosu/vela/tflite/SVDFOptions.py b/ethosu/vela/tflite/SVDFOptions.py
index e4b3461..b5e5903 100644
--- a/ethosu/vela/tflite/SVDFOptions.py
+++ b/ethosu/vela/tflite/SVDFOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SVDFOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SVDFOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SVDFOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ScatterNdOptions.py b/ethosu/vela/tflite/ScatterNdOptions.py
index e6bf3a1..0a8adc1 100644
--- a/ethosu/vela/tflite/ScatterNdOptions.py
+++ b/ethosu/vela/tflite/ScatterNdOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class ScatterNdOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ScatterNdOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ScatterNdOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SegmentSumOptions.py b/ethosu/vela/tflite/SegmentSumOptions.py
index d1c3213..3b23126 100644
--- a/ethosu/vela/tflite/SegmentSumOptions.py
+++ b/ethosu/vela/tflite/SegmentSumOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SegmentSumOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SegmentSumOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SegmentSumOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SelectOptions.py b/ethosu/vela/tflite/SelectOptions.py
index d67daf3..6176d0c 100644
--- a/ethosu/vela/tflite/SelectOptions.py
+++ b/ethosu/vela/tflite/SelectOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SelectOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SelectOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SelectOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SelectV2Options.py b/ethosu/vela/tflite/SelectV2Options.py
index 5d03fc2..cc01ece 100644
--- a/ethosu/vela/tflite/SelectV2Options.py
+++ b/ethosu/vela/tflite/SelectV2Options.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SelectV2Options(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SelectV2OptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SelectV2Options
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SequenceRNNOptions.py b/ethosu/vela/tflite/SequenceRNNOptions.py
index 16eaf09..636ba1c 100644
--- a/ethosu/vela/tflite/SequenceRNNOptions.py
+++ b/ethosu/vela/tflite/SequenceRNNOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SequenceRNNOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SequenceRNNOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SequenceRNNOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ShapeOptions.py b/ethosu/vela/tflite/ShapeOptions.py
index 2d24c05..e3f64d6 100644
--- a/ethosu/vela/tflite/ShapeOptions.py
+++ b/ethosu/vela/tflite/ShapeOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class ShapeOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ShapeOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ShapeOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SignatureDef.py b/ethosu/vela/tflite/SignatureDef.py
index 149f8fc..295ec85 100644
--- a/ethosu/vela/tflite/SignatureDef.py
+++ b/ethosu/vela/tflite/SignatureDef.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SignatureDef(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SignatureDefBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SignatureDef
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -39,6 +45,11 @@
         return 0
 
     # SignatureDef
+    def InputsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
+    # SignatureDef
     def Outputs(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
         if o != 0:
@@ -59,6 +70,11 @@
         return 0
 
     # SignatureDef
+    def OutputsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # SignatureDef
     def MethodName(self):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
         if o != 0:
diff --git a/ethosu/vela/tflite/SkipGramOptions.py b/ethosu/vela/tflite/SkipGramOptions.py
index 0e8bdc1..cd66e11 100644
--- a/ethosu/vela/tflite/SkipGramOptions.py
+++ b/ethosu/vela/tflite/SkipGramOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SkipGramOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SkipGramOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SkipGramOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SliceOptions.py b/ethosu/vela/tflite/SliceOptions.py
index 4b41568..ef16bb1 100644
--- a/ethosu/vela/tflite/SliceOptions.py
+++ b/ethosu/vela/tflite/SliceOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SliceOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SliceOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SliceOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SoftmaxOptions.py b/ethosu/vela/tflite/SoftmaxOptions.py
index a716853..7ee4a19 100644
--- a/ethosu/vela/tflite/SoftmaxOptions.py
+++ b/ethosu/vela/tflite/SoftmaxOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SoftmaxOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SoftmaxOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SoftmaxOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SpaceToBatchNDOptions.py b/ethosu/vela/tflite/SpaceToBatchNDOptions.py
index b61ef96..e066d61 100644
--- a/ethosu/vela/tflite/SpaceToBatchNDOptions.py
+++ b/ethosu/vela/tflite/SpaceToBatchNDOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SpaceToBatchNDOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SpaceToBatchNDOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SpaceToBatchNDOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SpaceToDepthOptions.py b/ethosu/vela/tflite/SpaceToDepthOptions.py
index d571174..80f9f8a 100644
--- a/ethosu/vela/tflite/SpaceToDepthOptions.py
+++ b/ethosu/vela/tflite/SpaceToDepthOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SpaceToDepthOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SpaceToDepthOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SpaceToDepthOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SparseToDenseOptions.py b/ethosu/vela/tflite/SparseToDenseOptions.py
index 826eee0..328aadf 100644
--- a/ethosu/vela/tflite/SparseToDenseOptions.py
+++ b/ethosu/vela/tflite/SparseToDenseOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SparseToDenseOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SparseToDenseOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SparseToDenseOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SparsityParameters.py b/ethosu/vela/tflite/SparsityParameters.py
index de550a6..b4d4c1c 100644
--- a/ethosu/vela/tflite/SparsityParameters.py
+++ b/ethosu/vela/tflite/SparsityParameters.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SparsityParameters(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SparsityParametersBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SparsityParameters
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -41,6 +47,11 @@
         return 0
 
     # SparsityParameters
+    def TraversalOrderIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
+    # SparsityParameters
     def BlockMap(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
         if o != 0:
@@ -63,6 +74,11 @@
         return 0
 
     # SparsityParameters
+    def BlockMapIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # SparsityParameters
     def DimMetadata(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
         if o != 0:
@@ -82,6 +98,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # SparsityParameters
+    def DimMetadataIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        return o == 0
+
 def SparsityParametersStart(builder): builder.StartObject(3)
 def SparsityParametersAddTraversalOrder(builder, traversalOrder): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(traversalOrder), 0)
 def SparsityParametersStartTraversalOrderVector(builder, numElems): return builder.StartVector(4, numElems, 4)
diff --git a/ethosu/vela/tflite/SplitOptions.py b/ethosu/vela/tflite/SplitOptions.py
index 3207525..54ce1b3 100644
--- a/ethosu/vela/tflite/SplitOptions.py
+++ b/ethosu/vela/tflite/SplitOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SplitOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SplitOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SplitOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SplitVOptions.py b/ethosu/vela/tflite/SplitVOptions.py
index 418959d..90f0d2e 100644
--- a/ethosu/vela/tflite/SplitVOptions.py
+++ b/ethosu/vela/tflite/SplitVOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SplitVOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SplitVOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SplitVOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SquareOptions.py b/ethosu/vela/tflite/SquareOptions.py
index 56633f6..fb72154 100644
--- a/ethosu/vela/tflite/SquareOptions.py
+++ b/ethosu/vela/tflite/SquareOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SquareOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SquareOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SquareOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SquaredDifferenceOptions.py b/ethosu/vela/tflite/SquaredDifferenceOptions.py
index 906855d..dd1969a 100644
--- a/ethosu/vela/tflite/SquaredDifferenceOptions.py
+++ b/ethosu/vela/tflite/SquaredDifferenceOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SquaredDifferenceOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SquaredDifferenceOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SquaredDifferenceOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SqueezeOptions.py b/ethosu/vela/tflite/SqueezeOptions.py
index 25b294d..1904abf 100644
--- a/ethosu/vela/tflite/SqueezeOptions.py
+++ b/ethosu/vela/tflite/SqueezeOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SqueezeOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SqueezeOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SqueezeOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -40,6 +46,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # SqueezeOptions
+    def SqueezeDimsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
 def SqueezeOptionsStart(builder): builder.StartObject(1)
 def SqueezeOptionsAddSqueezeDims(builder, squeezeDims): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(squeezeDims), 0)
 def SqueezeOptionsStartSqueezeDimsVector(builder, numElems): return builder.StartVector(4, numElems, 4)
diff --git a/ethosu/vela/tflite/StridedSliceOptions.py b/ethosu/vela/tflite/StridedSliceOptions.py
index 3bbb36b..c6cb790 100644
--- a/ethosu/vela/tflite/StridedSliceOptions.py
+++ b/ethosu/vela/tflite/StridedSliceOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class StridedSliceOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def StridedSliceOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # StridedSliceOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/SubGraph.py b/ethosu/vela/tflite/SubGraph.py
index eaa42fa..163124d 100644
--- a/ethosu/vela/tflite/SubGraph.py
+++ b/ethosu/vela/tflite/SubGraph.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SubGraph(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SubGraphBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SubGraph
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -39,6 +45,11 @@
         return 0
 
     # SubGraph
+    def TensorsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
+    # SubGraph
     def Inputs(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
         if o != 0:
@@ -61,6 +72,11 @@
         return 0
 
     # SubGraph
+    def InputsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
+        return o == 0
+
+    # SubGraph
     def Outputs(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
         if o != 0:
@@ -83,6 +99,11 @@
         return 0
 
     # SubGraph
+    def OutputsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(8))
+        return o == 0
+
+    # SubGraph
     def Operators(self, j):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
         if o != 0:
@@ -103,6 +124,11 @@
         return 0
 
     # SubGraph
+    def OperatorsIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(10))
+        return o == 0
+
+    # SubGraph
     def Name(self):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(12))
         if o != 0:
diff --git a/ethosu/vela/tflite/SubOptions.py b/ethosu/vela/tflite/SubOptions.py
index c3ed40e..1a9ba97 100644
--- a/ethosu/vela/tflite/SubOptions.py
+++ b/ethosu/vela/tflite/SubOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class SubOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def SubOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # SubOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/Tensor.py b/ethosu/vela/tflite/Tensor.py
index 4c39b7c..6a94784 100644
--- a/ethosu/vela/tflite/Tensor.py
+++ b/ethosu/vela/tflite/Tensor.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class Tensor(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def TensorBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # Tensor
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -41,6 +47,11 @@
         return 0
 
     # Tensor
+    def ShapeIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
+    # Tensor
     def Type(self):
         o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(6))
         if o != 0:
@@ -112,6 +123,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # Tensor
+    def ShapeSignatureIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(18))
+        return o == 0
+
 def TensorStart(builder): builder.StartObject(8)
 def TensorAddShape(builder, shape): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(shape), 0)
 def TensorStartShapeVector(builder, numElems): return builder.StartVector(4, numElems, 4)
diff --git a/ethosu/vela/tflite/TensorMap.py b/ethosu/vela/tflite/TensorMap.py
index e9b036d..9b41e0b 100644
--- a/ethosu/vela/tflite/TensorMap.py
+++ b/ethosu/vela/tflite/TensorMap.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class TensorMap(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def TensorMapBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # TensorMap
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/TensorType.py b/ethosu/vela/tflite/TensorType.py
index e010881..a5235f4 100644
--- a/ethosu/vela/tflite/TensorType.py
+++ b/ethosu/vela/tflite/TensorType.py
@@ -15,4 +15,8 @@
     INT8 = 9
     FLOAT64 = 10
     COMPLEX128 = 11
+    UINT64 = 12
+    RESOURCE = 13
+    VARIANT = 14
+    UINT32 = 15
 
diff --git a/ethosu/vela/tflite/TileOptions.py b/ethosu/vela/tflite/TileOptions.py
index ec8396d..73eebc6 100644
--- a/ethosu/vela/tflite/TileOptions.py
+++ b/ethosu/vela/tflite/TileOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class TileOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def TileOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # TileOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/TopKV2Options.py b/ethosu/vela/tflite/TopKV2Options.py
index ccd5103..c8c1336 100644
--- a/ethosu/vela/tflite/TopKV2Options.py
+++ b/ethosu/vela/tflite/TopKV2Options.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class TopKV2Options(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def TopKV2OptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # TopKV2Options
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/TransposeConvOptions.py b/ethosu/vela/tflite/TransposeConvOptions.py
index 423571c..f291141 100644
--- a/ethosu/vela/tflite/TransposeConvOptions.py
+++ b/ethosu/vela/tflite/TransposeConvOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class TransposeConvOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def TransposeConvOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # TransposeConvOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/TransposeOptions.py b/ethosu/vela/tflite/TransposeOptions.py
index 42c596d..0296965 100644
--- a/ethosu/vela/tflite/TransposeOptions.py
+++ b/ethosu/vela/tflite/TransposeOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class TransposeOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def TransposeOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # TransposeOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/Uint16Vector.py b/ethosu/vela/tflite/Uint16Vector.py
index 750e52a..247fada 100644
--- a/ethosu/vela/tflite/Uint16Vector.py
+++ b/ethosu/vela/tflite/Uint16Vector.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class Uint16Vector(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def Uint16VectorBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # Uint16Vector
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -40,6 +46,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # Uint16Vector
+    def ValuesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
 def Uint16VectorStart(builder): builder.StartObject(1)
 def Uint16VectorAddValues(builder, values): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(values), 0)
 def Uint16VectorStartValuesVector(builder, numElems): return builder.StartVector(2, numElems, 2)
diff --git a/ethosu/vela/tflite/Uint8Vector.py b/ethosu/vela/tflite/Uint8Vector.py
index dc475f9..ce3895e 100644
--- a/ethosu/vela/tflite/Uint8Vector.py
+++ b/ethosu/vela/tflite/Uint8Vector.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class Uint8Vector(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def Uint8VectorBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # Uint8Vector
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
@@ -40,6 +46,11 @@
             return self._tab.VectorLen(o)
         return 0
 
+    # Uint8Vector
+    def ValuesIsNone(self):
+        o = flatbuffers.number_types.UOffsetTFlags.py_type(self._tab.Offset(4))
+        return o == 0
+
 def Uint8VectorStart(builder): builder.StartObject(1)
 def Uint8VectorAddValues(builder, values): builder.PrependUOffsetTRelativeSlot(0, flatbuffers.number_types.UOffsetTFlags.py_type(values), 0)
 def Uint8VectorStartValuesVector(builder, numElems): return builder.StartVector(1, numElems, 1)
diff --git a/ethosu/vela/tflite/UnidirectionalSequenceLSTMOptions.py b/ethosu/vela/tflite/UnidirectionalSequenceLSTMOptions.py
index b734f3f..b945aa9 100644
--- a/ethosu/vela/tflite/UnidirectionalSequenceLSTMOptions.py
+++ b/ethosu/vela/tflite/UnidirectionalSequenceLSTMOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class UnidirectionalSequenceLSTMOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def UnidirectionalSequenceLSTMOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # UnidirectionalSequenceLSTMOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/UniqueOptions.py b/ethosu/vela/tflite/UniqueOptions.py
index 841c697..1088ef7 100644
--- a/ethosu/vela/tflite/UniqueOptions.py
+++ b/ethosu/vela/tflite/UniqueOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class UniqueOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def UniqueOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # UniqueOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/UnpackOptions.py b/ethosu/vela/tflite/UnpackOptions.py
index eed4019..a8cc597 100644
--- a/ethosu/vela/tflite/UnpackOptions.py
+++ b/ethosu/vela/tflite/UnpackOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class UnpackOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def UnpackOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # UnpackOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/WhereOptions.py b/ethosu/vela/tflite/WhereOptions.py
index ab69f6a..fd4f440 100644
--- a/ethosu/vela/tflite/WhereOptions.py
+++ b/ethosu/vela/tflite/WhereOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class WhereOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def WhereOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # WhereOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/WhileOptions.py b/ethosu/vela/tflite/WhileOptions.py
index 7d5a6df..49f32a2 100644
--- a/ethosu/vela/tflite/WhileOptions.py
+++ b/ethosu/vela/tflite/WhileOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class WhileOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def WhileOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # WhileOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite/ZerosLikeOptions.py b/ethosu/vela/tflite/ZerosLikeOptions.py
index e6aa963..098d051 100644
--- a/ethosu/vela/tflite/ZerosLikeOptions.py
+++ b/ethosu/vela/tflite/ZerosLikeOptions.py
@@ -3,6 +3,8 @@
 # namespace: tflite
 
 import flatbuffers
+from flatbuffers.compat import import_numpy
+np = import_numpy()
 
 class ZerosLikeOptions(object):
     __slots__ = ['_tab']
@@ -14,6 +16,10 @@
         x.Init(buf, n + offset)
         return x
 
+    @classmethod
+    def ZerosLikeOptionsBufferHasIdentifier(cls, buf, offset, size_prefixed=False):
+        return flatbuffers.util.BufferHasIdentifier(buf, offset, b"\x54\x46\x4C\x33", size_prefixed=size_prefixed)
+
     # ZerosLikeOptions
     def Init(self, buf, pos):
         self._tab = flatbuffers.table.Table(buf, pos)
diff --git a/ethosu/vela/tflite_mapping.py b/ethosu/vela/tflite_mapping.py
index 23a1a2b..e0f2493 100644
--- a/ethosu/vela/tflite_mapping.py
+++ b/ethosu/vela/tflite_mapping.py
@@ -35,11 +35,14 @@
 from .tflite import BatchToSpaceNDOptions
 from .tflite import BidirectionalSequenceLSTMOptions
 from .tflite import BidirectionalSequenceRNNOptions
+from .tflite import BroadcastToOptions
+from .tflite import CallOnceOptions
 from .tflite import CallOptions
 from .tflite import CastOptions
 from .tflite import ConcatEmbeddingsOptions
 from .tflite import ConcatenationOptions
 from .tflite import Conv2DOptions
+from .tflite import Conv3DOptions
 from .tflite import CosOptions
 from .tflite import CumsumOptions
 from .tflite import DensifyOptions
@@ -61,6 +64,10 @@
 from .tflite import GreaterEqualOptions
 from .tflite import GreaterOptions
 from .tflite import HardSwishOptions
+from .tflite import HashtableFindOptions
+from .tflite import HashtableImportOptions
+from .tflite import HashtableOptions
+from .tflite import HashtableSizeOptions
 from .tflite import IfOptions
 from .tflite import L2NormOptions
 from .tflite import LeakyReluOptions
@@ -97,6 +104,7 @@
 from .tflite import ResizeNearestNeighborOptions
 from .tflite import ReverseSequenceOptions
 from .tflite import ReverseV2Options
+from .tflite import Rfft2dOptions
 from .tflite import RNNOptions
 from .tflite import ScatterNdOptions
 from .tflite import SegmentSumOptions
@@ -281,6 +289,14 @@
     BuiltinOptions.WhileOptions: WhileOptions.WhileOptions,
     BuiltinOptions.BatchMatMulOptions: BatchMatMulOptions.BatchMatMulOptions,
     BuiltinOptions.CumsumOptions: CumsumOptions.CumsumOptions,
+    BuiltinOptions.CallOnceOptions: CallOnceOptions.CallOnceOptions,
+    BuiltinOptions.BroadcastToOptions: BroadcastToOptions.BroadcastToOptions,
+    BuiltinOptions.Rfft2dOptions: Rfft2dOptions.Rfft2dOptions,
+    BuiltinOptions.Conv3DOptions: Conv3DOptions.Conv3DOptions,
+    BuiltinOptions.HashtableOptions: HashtableOptions.HashtableOptions,
+    BuiltinOptions.HashtableFindOptions: HashtableFindOptions.HashtableFindOptions,
+    BuiltinOptions.HashtableImportOptions: HashtableImportOptions.HashtableImportOptions,
+    BuiltinOptions.HashtableSizeOptions: HashtableSizeOptions.HashtableSizeOptions,
 }
 
 builtin_options_inv_map = inverse_map(builtin_options_map)
@@ -450,44 +466,6 @@
 fused_act = ("fused_activation_function", activation_deserialize, activation_serialize)
 padding = ("padding", padding_deserialize, padding_serialize)
 
-pool2d_opts = OptionsSerializer(
-    "Pool2DOptions", (padding, "stride_w", "stride_h", "filter_width", "filter_height", fused_act,)
-)
-
-depthwise_opts = OptionsSerializer(
-    "DepthwiseConv2DOptions",
-    (padding, "stride_w", "stride_h", "depth_multiplier", fused_act, "dilation_w_factor", "dilation_h_factor",),
-)
-
-conv2d_opts = OptionsSerializer(
-    "Conv2DOptions", (padding, "stride_w", "stride_h", fused_act, "dilation_w_factor", "dilation_h_factor",)
-)
-
-lstm_opts = OptionsSerializer(
-    "LSTMOptions", (fused_act, "cell_clip", "proj_clip", "kernel_type", "asymmetric_quantize_inputs")
-)
-
-unidir_seq_lstm_opts = OptionsSerializer(
-    "UnidirectionalSequenceLSTMOptions",
-    (fused_act, "cell_clip", "proj_clip", "time_major", "asymmetric_quantize_inputs",),
-)
-
-bidir_seq_lstm_opts = OptionsSerializer(
-    "BidirectionalSequenceLSTMOptions",
-    (fused_act, "cell_clip", "proj_clip", "merge_outputs", "time_major", "asymmetric_quantize_inputs"),
-)
-
-rnn_opts = OptionsSerializer("RNNOptions", (fused_act, "asymmetric_quantize_inputs"))
-
-seq_rnn_opts = OptionsSerializer("SequenceRNNOptions", ("time_major", fused_act, "asymmetric_quantize_inputs",))
-
-bidir_seq_rnn_opts = OptionsSerializer(
-    "BidirectionalSequenceRNNOptions", ("time_major", fused_act, "merge_outputs", "asymmetric_quantize_inputs")
-)
-
-
-reducer_opts = OptionsSerializer("ReducerOptions", ("keep_dims",))
-
 is_int_vec = True
 
 TFLITE_NO_INDICES = TensorIndices([], [], [])
@@ -507,14 +485,33 @@
         OptionsSerializer("AddOptions", (fused_act, "pot_scale_int16")),
         TFLITE_IFM_IFM2_INDICES,
     ),
-    BuiltinOperator.AVERAGE_POOL_2D: (Op.AvgPool, pool2d_opts, TFLITE_IFM_INDICES),
+    BuiltinOperator.AVERAGE_POOL_2D: (
+        Op.AvgPool,
+        OptionsSerializer(
+            "Pool2DOptions", ("filter_height", "filter_width", fused_act, padding, "stride_h", "stride_w")
+        ),
+        TFLITE_IFM_INDICES,
+    ),
     BuiltinOperator.CONCATENATION: (
         Op.ConcatTFLite,
         OptionsSerializer("ConcatenationOptions", ("axis", fused_act)),
         TFLITE_CONCAT_INDICES,
     ),
-    BuiltinOperator.CONV_2D: (Op.Conv2DBias, conv2d_opts, TFLITE_IFM_WEIGHTS_BIAS_INDICES),
-    BuiltinOperator.DEPTHWISE_CONV_2D: (Op.DepthwiseConv2DBias, depthwise_opts, TFLITE_IFM_WEIGHTS_BIAS_INDICES),
+    BuiltinOperator.CONV_2D: (
+        Op.Conv2DBias,
+        OptionsSerializer(
+            "Conv2DOptions", ("dilation_h_factor", "dilation_w_factor", fused_act, padding, "stride_h", "stride_w")
+        ),
+        TFLITE_IFM_WEIGHTS_BIAS_INDICES,
+    ),
+    BuiltinOperator.DEPTHWISE_CONV_2D: (
+        Op.DepthwiseConv2DBias,
+        OptionsSerializer(
+            "DepthwiseConv2DOptions",
+            ("depth_multiplier", "dilation_h_factor", "dilation_w_factor", fused_act, padding, "stride_h", "stride_w"),
+        ),
+        TFLITE_IFM_WEIGHTS_BIAS_INDICES,
+    ),
     BuiltinOperator.DEPTH_TO_SPACE: (
         Op.DepthToSpace,
         OptionsSerializer("DepthToSpaceOptions", ("block_size",)),
@@ -526,16 +523,22 @@
     BuiltinOperator.FULLY_CONNECTED: (
         Op.FullyConnected,
         OptionsSerializer(
-            "FullyConnectedOptions", (fused_act, "weights_format", "asymmetric_quantize_inputs", "keep_num_dims")
+            "FullyConnectedOptions", ("asymmetric_quantize_inputs", fused_act, "keep_num_dims", "weights_format")
         ),
         TFLITE_IFM_WEIGHTS_BIAS_INDICES,
     ),
     BuiltinOperator.HASHTABLE_LOOKUP: (Op.HashtableLookup, None, TFLITE_NO_INDICES),
     BuiltinOperator.L2_NORMALIZATION: (Op.L2Norm, OptionsSerializer("L2NormOptions", (fused_act,)), TFLITE_NO_INDICES),
-    BuiltinOperator.L2_POOL_2D: (Op.L2Pool2D, pool2d_opts, TFLITE_NO_INDICES),
+    BuiltinOperator.L2_POOL_2D: (
+        Op.L2Pool2D,
+        OptionsSerializer(
+            "Pool2DOptions", ("filter_height", "filter_width", fused_act, padding, "stride_h", "stride_w")
+        ),
+        TFLITE_NO_INDICES,
+    ),
     BuiltinOperator.LOCAL_RESPONSE_NORMALIZATION: (
         Op.LRN,
-        OptionsSerializer("LocalResponseNormalizationOptions", ("radius", "bias", "alpha", "beta")),
+        OptionsSerializer("LocalResponseNormalizationOptions", ("alpha", "beta", "bias", "radius")),
         TFLITE_NO_INDICES,
     ),
     BuiltinOperator.LOGISTIC: (Op.Sigmoid, None, TFLITE_IFM_INDICES),
@@ -544,15 +547,29 @@
         OptionsSerializer("LSHProjectionOptions", ("type",)),
         TFLITE_NO_INDICES,
     ),
-    BuiltinOperator.LSTM: (Op.Lstm, lstm_opts, TFLITE_IFM_WEIGHTS_INDICES),
-    BuiltinOperator.MAX_POOL_2D: (Op.MaxPool, pool2d_opts, TFLITE_IFM_INDICES),
+    BuiltinOperator.LSTM: (
+        Op.Lstm,
+        OptionsSerializer(
+            "LSTMOptions", ("asymmetric_quantize_inputs", "cell_clip", fused_act, "kernel_type", "proj_clip")
+        ),
+        TFLITE_IFM_WEIGHTS_INDICES,
+    ),
+    BuiltinOperator.MAX_POOL_2D: (
+        Op.MaxPool,
+        OptionsSerializer(
+            "Pool2DOptions", ("filter_height", "filter_width", fused_act, padding, "stride_h", "stride_w")
+        ),
+        TFLITE_IFM_INDICES,
+    ),
     BuiltinOperator.MUL: (Op.Mul, OptionsSerializer("MulOptions", (fused_act,)), TFLITE_IFM_IFM2_INDICES),
     BuiltinOperator.RELU: (Op.Relu, None, TFLITE_IFM_INDICES),
     BuiltinOperator.RELU_N1_TO_1: (Op.ReluN1To1, None, TFLITE_IFM_INDICES),
     BuiltinOperator.RELU6: (Op.Relu6, None, TFLITE_IFM_INDICES),
     BuiltinOperator.RESHAPE: (
         Op.Reshape,
-        OptionsSerializer("ReshapeOptions", (("new_shape", is_int_vec),)),
+        OptionsSerializer(
+            "ReshapeOptions", (("new_shape", is_int_vec), "new_shape_as_numpy", "new_shape_is_none", "new_shape_length")
+        ),
         TFLITE_IFM_INDICES,
     ),
     BuiltinOperator.RESIZE_BILINEAR: (
@@ -560,7 +577,11 @@
         OptionsSerializer("ResizeBilinearOptions", ("align_corners", "half_pixel_centers")),
         TFLITE_IFM_INDICES,
     ),
-    BuiltinOperator.RNN: (Op.Rnn, rnn_opts, TFLITE_IFM_WEIGHTS_INDICES),
+    BuiltinOperator.RNN: (
+        Op.Rnn,
+        OptionsSerializer("RNNOptions", ("asymmetric_quantize_inputs", fused_act)),
+        TFLITE_IFM_WEIGHTS_INDICES,
+    ),
     BuiltinOperator.SOFTMAX: (Op.Softmax, OptionsSerializer("SoftmaxOptions", ("beta",)), TFLITE_IFM_INDICES),
     BuiltinOperator.SPACE_TO_DEPTH: (
         Op.SpaceToDepth,
@@ -569,7 +590,7 @@
     ),
     BuiltinOperator.SVDF: (
         Op.Svdf,
-        OptionsSerializer("SVDFOptions", ("rank", fused_act, "asymmetric_quantize_inputs")),
+        OptionsSerializer("SVDFOptions", ("asymmetric_quantize_inputs", fused_act, "rank")),
         TFLITE_NO_INDICES,
     ),
     BuiltinOperator.TANH: (Op.Tanh, None, TFLITE_IFM_INDICES),
@@ -578,20 +599,22 @@
         OptionsSerializer(
             "ConcatEmbeddingsOptions",
             (
+                "embedding_dim_per_channel",
+                "embedding_dim_per_channel_as_numpy",
+                "embedding_dim_per_channel_is_none",
+                "embedding_dim_per_channel_length",
                 "num_channels",
                 "num_columns_per_channel",
                 "num_columns_per_channel_as_numpy",
-                "num_columns_per_channel_as_length",
-                "embedding_dim_per_channel",
-                "embedding_dim_per_channel_as_numpy",
-                "embedding_dim_per_channel_as_length",
+                "num_columns_per_channel_is_none",
+                "num_columns_per_channel_length",
             ),
         ),
         TFLITE_NO_INDICES,
     ),
     BuiltinOperator.SKIP_GRAM: (
         Op.SkipGram,
-        OptionsSerializer("SkipGramOptions", ("ngram_size", "max_skip_size", "include_all_ngrams")),
+        OptionsSerializer("SkipGramOptions", ("include_all_ngrams", "max_skip_size", "ngram_size")),
         TFLITE_NO_INDICES,
     ),
     BuiltinOperator.CALL: (Op.Call, OptionsSerializer("CallOptions", ("subgraph",)), TFLITE_NO_INDICES),
@@ -603,10 +626,14 @@
     BuiltinOperator.PAD: (Op.Pad, OptionsSerializer("PadOptions"), TFLITE_IFM_INDICES),
     BuiltinOperator.UNIDIRECTIONAL_SEQUENCE_RNN: (
         Op.UnidirectionalSequenceRnn,
-        seq_rnn_opts,
+        OptionsSerializer("SequenceRNNOptions", ("asymmetric_quantize_inputs", fused_act, "time_major")),
         TFLITE_IFM_WEIGHTS_INDICES,
     ),
-    BuiltinOperator.GATHER: (Op.GatherV2, OptionsSerializer("GatherOptions", ("axis",)), TFLITE_NO_INDICES),
+    BuiltinOperator.GATHER: (
+        Op.GatherV2,
+        OptionsSerializer("GatherOptions", ("axis", "batch_dims")),
+        TFLITE_NO_INDICES,
+    ),
     BuiltinOperator.BATCH_TO_SPACE_ND: (
         Op.BatchToSpaceND,
         OptionsSerializer("BatchToSpaceNDOptions"),
@@ -618,33 +645,41 @@
         TFLITE_NO_INDICES,
     ),
     BuiltinOperator.TRANSPOSE: (Op.Transpose, OptionsSerializer("TransposeOptions"), TFLITE_NO_INDICES),
-    BuiltinOperator.MEAN: (Op.Mean, reducer_opts, TFLITE_IFM_INDICES),
+    BuiltinOperator.MEAN: (Op.Mean, OptionsSerializer("ReducerOptions", ("keep_dims",)), TFLITE_IFM_INDICES),
     BuiltinOperator.SUB: (
         Op.Sub,
-        OptionsSerializer("SubOptions", (fused_act, "pot_scale_int16",)),
+        OptionsSerializer("SubOptions", (fused_act, "pot_scale_int16")),
         TFLITE_IFM_IFM2_INDICES,
     ),
     BuiltinOperator.DIV: (Op.Div, OptionsSerializer("DivOptions", (fused_act,)), TFLITE_NO_INDICES),
     BuiltinOperator.SQUEEZE: (
         Op.Squeeze,
-        OptionsSerializer("SqueezeOptions", (("squeeze_dims", is_int_vec),)),
+        OptionsSerializer(
+            "SqueezeOptions",
+            (("squeeze_dims", is_int_vec), "squeeze_dims_as_numpy", "squeeze_dims_is_none", "squeeze_dims_length"),
+        ),
         TFLITE_IFM_INDICES,
     ),
     BuiltinOperator.UNIDIRECTIONAL_SEQUENCE_LSTM: (
         Op.UnidirectionalSequenceLstm,
-        unidir_seq_lstm_opts,
+        OptionsSerializer(
+            "UnidirectionalSequenceLSTMOptions",
+            ("asymmetric_quantize_inputs", "cell_clip", fused_act, "proj_clip", "time_major"),
+        ),
         TFLITE_IFM_WEIGHTS_INDICES,
     ),
     BuiltinOperator.STRIDED_SLICE: (
         Op.StridedSlice,
         OptionsSerializer(
-            "StridedSliceOptions", ("begin_mask", "end_mask", "ellipsis_mask", "new_axis_mask", "shrink_axis_mask"),
+            "StridedSliceOptions", ("begin_mask", "ellipsis_mask", "end_mask", "new_axis_mask", "shrink_axis_mask")
         ),
         TFLITE_IFM_INDICES,
     ),
     BuiltinOperator.BIDIRECTIONAL_SEQUENCE_RNN: (
         Op.BidirectionalSequenceRnn,
-        bidir_seq_rnn_opts,
+        OptionsSerializer(
+            "BidirectionalSequenceRNNOptions", ("asymmetric_quantize_inputs", fused_act, "merge_outputs", "time_major")
+        ),
         TFLITE_IFM_WEIGHTS_INDICES,
     ),
     BuiltinOperator.EXP: (Op.Exp, OptionsSerializer("ExpOptions"), TFLITE_IFM_INDICES),
@@ -654,7 +689,10 @@
     BuiltinOperator.DELEGATE: (Op.Delegate, None, TFLITE_NO_INDICES),
     BuiltinOperator.BIDIRECTIONAL_SEQUENCE_LSTM: (
         Op.BidirectionalSequenceLstm,
-        bidir_seq_lstm_opts,
+        OptionsSerializer(
+            "BidirectionalSequenceLSTMOptions",
+            ("asymmetric_quantize_inputs", "cell_clip", fused_act, "merge_outputs", "proj_clip", "time_major"),
+        ),
         TFLITE_IFM_WEIGHTS_INDICES,
     ),
     BuiltinOperator.CAST: (
@@ -687,7 +725,7 @@
     BuiltinOperator.SIN: (Op.Sin, None, TFLITE_NO_INDICES),
     BuiltinOperator.TRANSPOSE_CONV: (
         Op.Conv2DBackpropInput,
-        OptionsSerializer("TransposeConvOptions", (padding, "stride_w", "stride_h")),
+        OptionsSerializer("TransposeConvOptions", (padding, "stride_h", "stride_w")),
         TFLITE_CONV2D_BACKPROP_INDICES,
     ),
     BuiltinOperator.SPARSE_TO_DENSE: (
@@ -700,7 +738,7 @@
     BuiltinOperator.EQUAL: (Op.Equal, OptionsSerializer("EqualOptions"), TFLITE_NO_INDICES),
     BuiltinOperator.NOT_EQUAL: (Op.NotEqual, OptionsSerializer("NotEqualOptions"), TFLITE_NO_INDICES),
     BuiltinOperator.LOG: (Op.Log, None, TFLITE_NO_INDICES),
-    BuiltinOperator.SUM: (Op.Sum, reducer_opts, TFLITE_NO_INDICES),
+    BuiltinOperator.SUM: (Op.Sum, OptionsSerializer("ReducerOptions", ("keep_dims",)), TFLITE_NO_INDICES),
     BuiltinOperator.SQRT: (Op.Sqrt, None, TFLITE_NO_INDICES),
     BuiltinOperator.RSQRT: (Op.Rsqrt, None, TFLITE_NO_INDICES),
     BuiltinOperator.SHAPE: (
@@ -716,20 +754,20 @@
     ),
     BuiltinOperator.FAKE_QUANT: (
         Op.FakeQuantWithMinMaxArgs,
-        OptionsSerializer("FakeQuantOptions", ("min", "max", "num_bits", "narrow_range")),
+        OptionsSerializer("FakeQuantOptions", ("max", "min", "narrow_range", "num_bits")),
         TFLITE_NO_INDICES,
     ),
-    BuiltinOperator.REDUCE_PROD: (Op.Prod, reducer_opts, TFLITE_NO_INDICES),
-    BuiltinOperator.REDUCE_MAX: (Op.Max, reducer_opts, TFLITE_NO_INDICES),
-    BuiltinOperator.PACK: (Op.Pack, OptionsSerializer("PackOptions", ("values_count", "axis")), TFLITE_IFM_INDICES),
+    BuiltinOperator.REDUCE_PROD: (Op.Prod, OptionsSerializer("ReducerOptions", ("keep_dims",)), TFLITE_NO_INDICES),
+    BuiltinOperator.REDUCE_MAX: (Op.Max, OptionsSerializer("ReducerOptions", ("keep_dims",)), TFLITE_NO_INDICES),
+    BuiltinOperator.PACK: (Op.Pack, OptionsSerializer("PackOptions", ("axis", "values_count")), TFLITE_IFM_INDICES),
     BuiltinOperator.LOGICAL_OR: (Op.LogicalOr, OptionsSerializer("LogicalOrOptions"), TFLITE_NO_INDICES),
     BuiltinOperator.ONE_HOT: (Op.OneHot, OptionsSerializer("OneHotOptions", ("axis",)), TFLITE_NO_INDICES),
     BuiltinOperator.LOGICAL_AND: (Op.LogicalAnd, OptionsSerializer("LogicalAndOptions"), TFLITE_NO_INDICES),
     BuiltinOperator.LOGICAL_NOT: (Op.LogicalNot, OptionsSerializer("LogicalNotOptions"), TFLITE_NO_INDICES),
-    BuiltinOperator.UNPACK: (Op.Unpack, OptionsSerializer("UnpackOptions", ("num", "axis")), TFLITE_IFM_INDICES),
-    BuiltinOperator.REDUCE_MIN: (Op.Min, reducer_opts, TFLITE_NO_INDICES),
+    BuiltinOperator.UNPACK: (Op.Unpack, OptionsSerializer("UnpackOptions", ("axis", "num")), TFLITE_IFM_INDICES),
+    BuiltinOperator.REDUCE_MIN: (Op.Min, OptionsSerializer("ReducerOptions", ("keep_dims",)), TFLITE_NO_INDICES),
     BuiltinOperator.FLOOR_DIV: (Op.FloorDiv, OptionsSerializer("FloorDivOptions"), TFLITE_NO_INDICES),
-    BuiltinOperator.REDUCE_ANY: (Op.Any, reducer_opts, TFLITE_NO_INDICES),
+    BuiltinOperator.REDUCE_ANY: (Op.Any, OptionsSerializer("ReducerOptions", ("keep_dims",)), TFLITE_NO_INDICES),
     BuiltinOperator.SQUARE: (Op.Square, OptionsSerializer("SquareOptions"), TFLITE_NO_INDICES),
     BuiltinOperator.ZEROS_LIKE: (Op.ZerosLike, OptionsSerializer("ZerosLikeOptions"), TFLITE_NO_INDICES),
     BuiltinOperator.FILL: (Op.Fill, OptionsSerializer("FillOptions"), TFLITE_NO_INDICES),
@@ -764,7 +802,7 @@
     BuiltinOperator.ELU: (Op.Elu, None, TFLITE_NO_INDICES),
     BuiltinOperator.REVERSE_SEQUENCE: (
         Op.ReverseSequence,
-        OptionsSerializer("ReverseSequenceOptions", ("seq_dim", "batch_dim")),
+        OptionsSerializer("ReverseSequenceOptions", ("batch_dim", "seq_dim")),
         TFLITE_NO_INDICES,
     ),
     BuiltinOperator.MATRIX_DIAG: (Op.MatrixDiag, OptionsSerializer("MatrixDiagOptions"), TFLITE_NO_INDICES),
@@ -774,12 +812,12 @@
     BuiltinOperator.HARD_SWISH: (Op.HardSwish, OptionsSerializer("HardSwishOptions"), TFLITE_IFM_INDICES),
     BuiltinOperator.IF: (
         Op.If,
-        OptionsSerializer("IfOptions", ("then_subgraph_index", "else_subgraph_index")),
+        OptionsSerializer("IfOptions", ("else_subgraph_index", "then_subgraph_index")),
         TFLITE_NO_INDICES,
     ),
     BuiltinOperator.WHILE: (
         Op.While,
-        OptionsSerializer("WhileOptions", ("cond_subgraph_index", "body_subgraph_index")),
+        OptionsSerializer("WhileOptions", ("body_subgraph_index", "cond_subgraph_index")),
         TFLITE_NO_INDICES,
     ),
     BuiltinOperator.NON_MAX_SUPPRESSION_V4: (
@@ -798,7 +836,7 @@
     BuiltinOperator.SEGMENT_SUM: (Op.SegmentSum, OptionsSerializer("SegmentSumOptions"), TFLITE_NO_INDICES),
     BuiltinOperator.BATCH_MATMUL: (
         Op.BatchMatMul,
-        OptionsSerializer("BatchMatMulOptions", ("adj_x", "adj_y")),
+        OptionsSerializer("BatchMatMulOptions", ("adj_x", "adj_y", "asymmetric_quantize_inputs")),
         TFLITE_NO_INDICES,
     ),
     BuiltinOperator.CUMSUM: (
@@ -806,7 +844,64 @@
         OptionsSerializer("CumsumOptions", ("exclusive", "reverse")),
         TFLITE_NO_INDICES,
     ),
-    BuiltinOperator.CUSTOM: (Op.Custom, CustomOptionsSerializer(), TFLITE_NO_INDICES),
+    BuiltinOperator.CALL_ONCE: (
+        Op.CallOnce,
+        OptionsSerializer("CallOnceOptions", ("init_subgraph_index",)),
+        TFLITE_NO_INDICES,
+    ),
+    BuiltinOperator.BROADCAST_TO: (Op.BroadcastTo, OptionsSerializer("BroadcastToOptions"), TFLITE_NO_INDICES),
+    BuiltinOperator.RFFT2D: (Op.Rfft2D, OptionsSerializer("Rfft2dOptions"), TFLITE_NO_INDICES),
+    BuiltinOperator.CONV_3D: (
+        Op.Conv3D,
+        OptionsSerializer(
+            "Conv3DOptions",
+            (
+                "dilation_d_factor",
+                "dilation_h_factor",
+                "dilation_w_factor",
+                fused_act,
+                padding,
+                "stride_d",
+                "stride_h",
+                "stride_w",
+            ),
+        ),
+        TFLITE_NO_INDICES,
+    ),
+    BuiltinOperator.IMAG: (Op.Imag, None, TFLITE_NO_INDICES),
+    BuiltinOperator.REAL: (Op.Real, None, TFLITE_NO_INDICES),
+    BuiltinOperator.COMPLEX_ABS: (Op.ComplexAbs, None, TFLITE_NO_INDICES),
+    BuiltinOperator.HASHTABLE: (
+        Op.Hashtable,
+        OptionsSerializer("HashtableOptions", ("key_dtype", "table_id", "value_dtype")),
+        TFLITE_NO_INDICES,
+    ),
+    BuiltinOperator.HASHTABLE_FIND: (Op.HashtableFind, OptionsSerializer("HashtableFindOptions"), TFLITE_NO_INDICES),
+    BuiltinOperator.HASHTABLE_IMPORT: (
+        Op.HashtableImport,
+        OptionsSerializer("HashtableImportOptions"),
+        TFLITE_NO_INDICES,
+    ),
+    BuiltinOperator.HASHTABLE_SIZE: (Op.HashtableSize, OptionsSerializer("HashtableSizeOptions"), TFLITE_NO_INDICES),
+    BuiltinOperator.REDUCE_ALL: (Op.ReduceAll, OptionsSerializer("ReducerOptions", ("keep_dims",)), TFLITE_NO_INDICES),
+    BuiltinOperator.CONV_3D_TRANSPOSE: (
+        Op.Conv3DTranspose,
+        OptionsSerializer(
+            "Conv3DOptions",
+            (
+                "dilation_d_factor",
+                "dilation_h_factor",
+                "dilation_w_factor",
+                fused_act,
+                padding,
+                "stride_d",
+                "stride_h",
+                "stride_w",
+            ),
+        ),
+        TFLITE_NO_INDICES,
+    ),
+    BuiltinOperator.CUSTOM: (Op.Custom, None, TFLITE_NO_INDICES),
 }
 
 builtin_operator_inv_map = {v[0]: (k, v[1], v[2]) for k, v in builtin_operator_map.items()}