AbstractCircuit.freeze should not reallocate moments
#5878
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maffoo
reviewed
Sep 19, 2022
cirq-core/cirq/circuits/circuit.py
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| if i in moments_by_index: | ||
| self._moments.append(moments_by_index[i].with_operations(op_lists_by_index[i])) | ||
| if op_lists_by_index[i]: | ||
| self._moments.append(moments_by_index[i].with_operations(op_lists_by_index[i])) |
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Perhaps we could modify Moment.with_operations instead, so that we can get this optimization in more scenarios, e.g.
def with_operations(self, *contents: 'cirq.OP_TREE') -> 'cirq.Moment':
...
flattened_contents = tuple(op_tree.flatten_to_ops(contents))
if not flattened_contents:
return self
...
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Will revert this diff in the next commit,
maffoo
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Sep 19, 2022
| flattened_contents = tuple(op_tree.flatten_to_ops(contents)) | ||
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|
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| if not flattened_contents: | ||
| return self |
Contributor
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Please add a unit test of this behavior of Moment.with_operations
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|
@maffoo Created a big diff compared to the one which was approved. Needs another look. |
maffoo
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Sep 19, 2022
CirqBot
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Sep 20, 2022
These removals don't seem to affect the tests in any way. Don't merge until after #5878
rht
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rht
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These removals don't seem to affect the tests in any way. Don't merge until after quantumlib#5878
harry-phasecraft
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Oct 31, 2024
harry-phasecraft
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Oct 31, 2024
These removals don't seem to affect the tests in any way. Don't merge until after quantumlib#5878
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Fixes: #5816