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[Rewriter] Extend list of supported commutative operations #2741

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[Rewriter] Extend list of supported commutative operations #2741

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24 changes: 19 additions & 5 deletions onnxscript/rewriter/_pattern_ir.py
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Original file line number Diff line number Diff line change
Expand Up @@ -899,12 +899,26 @@ def num_outputs(self) -> int:
return len(self._outputs)

def commute(self) -> Sequence[GraphPattern]:
# List all commutative elementwise (binary) operators for which we
# consider swapping the inputs
COMMUTATIVE_OPS = {
("", "Add", ""),
("", "Mul", ""),
("", "And", ""),
("", "Or", ""),
("", "Xor", ""),
("", "BitwiseAnd", ""),
("", "BitwiseOr", ""),
("", "BitwiseXor", ""),
("", "Equal", ""),
("", "Max", ""),
("", "Mean", ""),
("", "Min", ""),
("", "Sum", ""),
}

def commute_node(node: NodePattern) -> Iterable[bool]:
if node.op_identifier() == ("", "Add", "") or node.op_identifier() == (
"",
"Mul",
"",
):
if node.op_identifier() in COMMUTATIVE_OPS:
# Try with and without swapping inputs.
return [False, True]
# No swapping of inputs
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