fix(phirgen): emit Skip mop instead of error on global phase #138
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The test failure seems to be related to #108 |
potential fix for #108
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@qciaran asking you to review since I introduce an invalid/unknown "Skip" The issue with just ignoring the phase is that if the branches of the conditional are empty, we get an error during phir validation as phir model requires the branches to be non-empty. Now the output corresponding to Phase is: Comment(c='IF ([z_corr_3[0]] == 1) THEN IF ([z_corr_3[0]] == 1) THEN Phase(0.5);'),
IfBlock(metadata=None, block='if', condition=COp(metadata=None, cop='==', returns=None, args=[('z_corr_3', 0), 1]), true_branch=[MOp(metadata=None, mop='Skip', duration=None)], false_branch=None),EDIT: discussed with @qciaran. Will send corresponding PRs for supporting |
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* feat(spec): introduce Skip mop See CQCL/pytket-phir#138 * feat(model): add validation for MOps
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Since conditionals depend on classical bits in their condition, we should create shards for each of them, instead of completely ignoring any dependency that may occur on those classical bits. Fixes: #150 A side effect: We were previously emitting a Skip mop (introduced in #138) for conditional global phase operations, but not they correctly get filtered out by `_is_command_global_phase`
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Since conditionals depend on classical bits in their condition, we should create shards for each of them, instead of completely ignoring any dependency that may occur on those classical bits. Fixes: #150 A side effect: We were previously emitting a Skip mop (introduced in #138) for conditional global phase operations, but now they correctly get filtered out by `_is_command_global_phase`
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Since conditionals depend on classical bits in their condition, we should create shards for each of them, instead of completely ignoring any dependency that may occur on those classical bits. Fixes: #150 A side effect: We were previously emitting a Skip mop (introduced in #138) for conditional global phase operations, but now they correctly get filtered out by `_is_command_global_phase`
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Since conditionals depend on classical bits in their condition, we should create shards for each of them, instead of completely ignoring any dependency that may occur on those classical bits. Fixes: #150 A side effect: We were previously emitting a Skip mop (introduced in #138) for conditional global phase operations, but now they correctly get filtered out by `_is_command_global_phase`
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Description
We currently error out on (global) Phase, which is a problem as global phase is a harmless operation. I propose a no-op
mopinstruction"Skip"instead to handle this scenario.Fixes #136
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Checklist: