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---
title: passes (v1.2)
description: API reference for qiskit.transpiler.passes in qiskit v1.2
in_page_toc_min_heading_level: 2
python_api_type: module
python_api_name: qiskit.transpiler.passes
---
<span id="module-qiskit.transpiler.passes" />
<span id="qiskit-transpiler-passes" />
<span id="transpiler-passes-qiskit-transpiler-passes" />
# Transpiler Passes
`qiskit.transpiler.passes`
## Layout Selection (Placement)
| | |
| ---------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------- |
| [`SetLayout`](qiskit.transpiler.passes.SetLayout "qiskit.transpiler.passes.SetLayout")(\*args, \*\*kwargs) | Set the `layout` property to the given layout. |
| [`TrivialLayout`](qiskit.transpiler.passes.TrivialLayout "qiskit.transpiler.passes.TrivialLayout")(\*args, \*\*kwargs) | Choose a Layout by assigning `n` circuit qubits to device qubits `0, .., n-1`. |
| [`DenseLayout`](qiskit.transpiler.passes.DenseLayout "qiskit.transpiler.passes.DenseLayout")(\*args, \*\*kwargs) | Choose a Layout by finding the most connected subset of qubits. |
| [`SabreLayout`](qiskit.transpiler.passes.SabreLayout "qiskit.transpiler.passes.SabreLayout")(\*args, \*\*kwargs) | Choose a Layout via iterative bidirectional routing of the input circuit. |
| [`CSPLayout`](qiskit.transpiler.passes.CSPLayout "qiskit.transpiler.passes.CSPLayout")(\*args, \*\*kwargs) | If possible, chooses a Layout as a CSP, using backtracking. |
| [`VF2Layout`](qiskit.transpiler.passes.VF2Layout "qiskit.transpiler.passes.VF2Layout")(\*args, \*\*kwargs) | A pass for choosing a Layout of a circuit onto a Coupling graph, as a subgraph isomorphism problem, solved by VF2++. |
| [`ApplyLayout`](qiskit.transpiler.passes.ApplyLayout "qiskit.transpiler.passes.ApplyLayout")(\*args, \*\*kwargs) | Transform a circuit with virtual qubits into a circuit with physical qubits. |
| [`Layout2qDistance`](qiskit.transpiler.passes.Layout2qDistance "qiskit.transpiler.passes.Layout2qDistance")(\*args, \*\*kwargs) | Evaluate how good the layout selection was. |
| [`EnlargeWithAncilla`](qiskit.transpiler.passes.EnlargeWithAncilla "qiskit.transpiler.passes.EnlargeWithAncilla")(\*args, \*\*kwargs) | Extend the dag with virtual qubits that are in layout but not in the circuit yet. |
| [`FullAncillaAllocation`](qiskit.transpiler.passes.FullAncillaAllocation "qiskit.transpiler.passes.FullAncillaAllocation")(\*args, \*\*kwargs) | Allocate all idle nodes from the coupling map or target as ancilla on the layout. |
| [`SabrePreLayout`](qiskit.transpiler.passes.SabrePreLayout "qiskit.transpiler.passes.SabrePreLayout")(\*args, \*\*kwargs) | Choose a starting layout to use for additional Sabre layout trials. |
## Routing
| | |
| ---------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------- |
| [`BasicSwap`](qiskit.transpiler.passes.BasicSwap "qiskit.transpiler.passes.BasicSwap")(\*args, \*\*kwargs) | Map (with minimum effort) a DAGCircuit onto a `coupling_map` adding swap gates. |
| [`LookaheadSwap`](qiskit.transpiler.passes.LookaheadSwap "qiskit.transpiler.passes.LookaheadSwap")(\*args, \*\*kwargs) | Map input circuit onto a backend topology via insertion of SWAPs. |
| [`StochasticSwap`](qiskit.transpiler.passes.StochasticSwap "qiskit.transpiler.passes.StochasticSwap")(\*args, \*\*kwargs) | Map a DAGCircuit onto a coupling\_map adding swap gates. |
| [`SabreSwap`](qiskit.transpiler.passes.SabreSwap "qiskit.transpiler.passes.SabreSwap")(\*args, \*\*kwargs) | Map input circuit onto a backend topology via insertion of SWAPs. |
| [`Commuting2qGateRouter`](qiskit.transpiler.passes.Commuting2qGateRouter "qiskit.transpiler.passes.Commuting2qGateRouter")(\*args, \*\*kwargs) | A class to swap route one or more commuting gates to the coupling map. |
| [`StarPreRouting`](qiskit.transpiler.passes.StarPreRouting "qiskit.transpiler.passes.StarPreRouting")(\*args, \*\*kwargs) | Run star to linear pre-routing |
## Basis Change
| | |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------- |
| [`BasisTranslator`](qiskit.transpiler.passes.BasisTranslator "qiskit.transpiler.passes.BasisTranslator")(\*args, \*\*kwargs) | Translates gates to a target basis by searching for a set of translations from a given EquivalenceLibrary. |
| [`Decompose`](qiskit.transpiler.passes.Decompose "qiskit.transpiler.passes.Decompose")(\*args, \*\*kwargs) | Expand a gate in a circuit using its decomposition rules. |
| [`TranslateParameterizedGates`](qiskit.transpiler.passes.TranslateParameterizedGates "qiskit.transpiler.passes.TranslateParameterizedGates")(\*args, \*\*kwargs) | Translate parameterized gates to a supported basis set. |
| [`Unroll3qOrMore`](qiskit.transpiler.passes.Unroll3qOrMore "qiskit.transpiler.passes.Unroll3qOrMore")(\*args, \*\*kwargs) | Recursively expands 3q+ gates until the circuit only contains 2q or 1q gates. |
| [`UnrollCustomDefinitions`](qiskit.transpiler.passes.UnrollCustomDefinitions "qiskit.transpiler.passes.UnrollCustomDefinitions")(\*args, \*\*kwargs) | Unrolls instructions with custom definitions. |
## Optimizations
| | |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [`Optimize1qGates`](qiskit.transpiler.passes.Optimize1qGates "qiskit.transpiler.passes.Optimize1qGates")(\*args, \*\*kwargs) | Optimize chains of single-qubit u1, u2, u3 gates by combining them into a single gate. |
| [`Optimize1qGatesDecomposition`](qiskit.transpiler.passes.Optimize1qGatesDecomposition "qiskit.transpiler.passes.Optimize1qGatesDecomposition")(\*args, \*\*kwargs) | Optimize chains of single-qubit gates by combining them into a single gate. |
| [`Collect1qRuns`](qiskit.transpiler.passes.Collect1qRuns "qiskit.transpiler.passes.Collect1qRuns")(\*args, \*\*kwargs) | Collect one-qubit subcircuits. |
| [`Collect2qBlocks`](qiskit.transpiler.passes.Collect2qBlocks "qiskit.transpiler.passes.Collect2qBlocks")(\*args, \*\*kwargs) | Collect two-qubit subcircuits. |
| [`CollectMultiQBlocks`](qiskit.transpiler.passes.CollectMultiQBlocks "qiskit.transpiler.passes.CollectMultiQBlocks")(\*args, \*\*kwargs) | Collect sequences of uninterrupted gates acting on groups of qubits. |
| [`CollectAndCollapse`](qiskit.transpiler.passes.CollectAndCollapse "qiskit.transpiler.passes.CollectAndCollapse")(\*args, \*\*kwargs) | A general transpiler pass to collect and to consolidate blocks of nodes in a circuit. |
| [`CollectLinearFunctions`](qiskit.transpiler.passes.CollectLinearFunctions "qiskit.transpiler.passes.CollectLinearFunctions")(\*args, \*\*kwargs) | Collect blocks of linear gates ([`CXGate`](qiskit.circuit.library.CXGate "qiskit.circuit.library.CXGate") and [`SwapGate`](qiskit.circuit.library.SwapGate "qiskit.circuit.library.SwapGate") gates) and replaces them by linear functions ([`LinearFunction`](qiskit.circuit.library.LinearFunction "qiskit.circuit.library.LinearFunction")). |
| [`CollectCliffords`](qiskit.transpiler.passes.CollectCliffords "qiskit.transpiler.passes.CollectCliffords")(\*args, \*\*kwargs) | Collects blocks of Clifford gates and replaces them by a [`Clifford`](qiskit.quantum_info.Clifford "qiskit.quantum_info.Clifford") object. |
| [`ConsolidateBlocks`](qiskit.transpiler.passes.ConsolidateBlocks "qiskit.transpiler.passes.ConsolidateBlocks")(\*args, \*\*kwargs) | Replace each block of consecutive gates by a single Unitary node. |
| [`CXCancellation`](qiskit.transpiler.passes.CXCancellation "qiskit.transpiler.passes.CXCancellation")(\*args, \*\*kwargs) | Cancel back-to-back `cx` gates in dag. |
| [`InverseCancellation`](qiskit.transpiler.passes.InverseCancellation "qiskit.transpiler.passes.InverseCancellation")(\*args, \*\*kwargs) | Cancel specific Gates which are inverses of each other when they occur back-to- back. |
| [`CommutationAnalysis`](qiskit.transpiler.passes.CommutationAnalysis "qiskit.transpiler.passes.CommutationAnalysis")(\*args, \*\*kwargs) | Analysis pass to find commutation relations between DAG nodes. |
| [`CommutativeCancellation`](qiskit.transpiler.passes.CommutativeCancellation "qiskit.transpiler.passes.CommutativeCancellation")(\*args, \*\*kwargs) | Cancel the redundant (self-adjoint) gates through commutation relations. |
| [`CommutativeInverseCancellation`](qiskit.transpiler.passes.CommutativeInverseCancellation "qiskit.transpiler.passes.CommutativeInverseCancellation")(\*args, \*\*kwargs) | Cancel pairs of inverse gates exploiting commutation relations. |
| [`Optimize1qGatesSimpleCommutation`](qiskit.transpiler.passes.Optimize1qGatesSimpleCommutation "qiskit.transpiler.passes.Optimize1qGatesSimpleCommutation")(\*args, \*\*kwargs) | Optimizes 1Q gate strings interrupted by 2Q gates by commuting the components and resynthesizing the results. |
| [`RemoveDiagonalGatesBeforeMeasure`](qiskit.transpiler.passes.RemoveDiagonalGatesBeforeMeasure "qiskit.transpiler.passes.RemoveDiagonalGatesBeforeMeasure")(\*args, \*\*kwargs) | Remove diagonal gates (including diagonal 2Q gates) before a measurement. |
| [`RemoveResetInZeroState`](qiskit.transpiler.passes.RemoveResetInZeroState "qiskit.transpiler.passes.RemoveResetInZeroState")(\*args, \*\*kwargs) | Remove reset gate when the qubit is in zero state. |
| [`RemoveFinalReset`](qiskit.transpiler.passes.RemoveFinalReset "qiskit.transpiler.passes.RemoveFinalReset")(\*args, \*\*kwargs) | Remove reset when it is the final instruction on a qubit wire. |
| [`HoareOptimizer`](qiskit.transpiler.passes.HoareOptimizer "qiskit.transpiler.passes.HoareOptimizer")(\*args, \*\*kwargs) | This is a transpiler pass using Hoare logic circuit optimization. |
| [`TemplateOptimization`](qiskit.transpiler.passes.TemplateOptimization "qiskit.transpiler.passes.TemplateOptimization")(\*args, \*\*kwargs) | Class for the template optimization pass. |
| [`EchoRZXWeylDecomposition`](qiskit.transpiler.passes.EchoRZXWeylDecomposition "qiskit.transpiler.passes.EchoRZXWeylDecomposition")(\*args, \*\*kwargs) | Rewrite two-qubit gates using the Weyl decomposition. |
| [`ResetAfterMeasureSimplification`](qiskit.transpiler.passes.ResetAfterMeasureSimplification "qiskit.transpiler.passes.ResetAfterMeasureSimplification")(\*args, \*\*kwargs) | This pass replaces reset after measure with a conditional X gate. |
| [`OptimizeCliffords`](qiskit.transpiler.passes.OptimizeCliffords "qiskit.transpiler.passes.OptimizeCliffords")(\*args, \*\*kwargs) | Combine consecutive Cliffords over the same qubits. |
| [`ElidePermutations`](qiskit.transpiler.passes.ElidePermutations "qiskit.transpiler.passes.ElidePermutations")(\*args, \*\*kwargs) | Remove permutation operations from a pre-layout circuit |
| [`NormalizeRXAngle`](qiskit.transpiler.passes.NormalizeRXAngle "qiskit.transpiler.passes.NormalizeRXAngle")(\*args, \*\*kwargs) | Normalize theta parameter of RXGate instruction. |
| [`OptimizeAnnotated`](qiskit.transpiler.passes.OptimizeAnnotated "qiskit.transpiler.passes.OptimizeAnnotated")(\*args, \*\*kwargs) | Optimization pass on circuits with annotated operations. |
| [`Split2QUnitaries`](qiskit.transpiler.passes.Split2QUnitaries "qiskit.transpiler.passes.Split2QUnitaries")(\*args, \*\*kwargs) | Attempt to splits two-qubit unitaries in a [`DAGCircuit`](qiskit.dagcircuit.DAGCircuit "qiskit.dagcircuit.DAGCircuit") into two single-qubit gates. |
## Calibration
| | |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ |
| [`PulseGates`](qiskit.transpiler.passes.PulseGates "qiskit.transpiler.passes.PulseGates")(\*args, \*\*kwargs) | Pulse gate adding pass. |
| [`RZXCalibrationBuilder`](qiskit.transpiler.passes.RZXCalibrationBuilder "qiskit.transpiler.passes.RZXCalibrationBuilder")(\*args, \*\*kwargs) | Creates calibrations for RZXGate(theta) by stretching and compressing Gaussian square pulses in the CX gate. |
| [`RZXCalibrationBuilderNoEcho`](qiskit.transpiler.passes.RZXCalibrationBuilderNoEcho "qiskit.transpiler.passes.RZXCalibrationBuilderNoEcho")(\*args, \*\*kwargs) | Creates calibrations for RZXGate(theta) by stretching and compressing Gaussian square pulses in the CX gate. |
| [`RXCalibrationBuilder`](qiskit.transpiler.passes.RXCalibrationBuilder "qiskit.transpiler.passes.RXCalibrationBuilder")(\*args, \*\*kwargs) | Add single-pulse RX calibrations that are bootstrapped from the SX calibration. |
### rzx\_templates
<Function id="qiskit.transpiler.passes.rzx_templates" github="https://github.com/Qiskit/qiskit/tree/stable/1.2/qiskit/transpiler/passes/calibration/rzx_templates.py#L34-L51" signature="qiskit.transpiler.passes.rzx_templates(template_list=None)">
Convenience function to get the cost\_dict and templates for template matching.
**Parameters**
**template\_list** ([*List*](https://docs.python.org/3/library/typing.html#typing.List "(in Python v3.13)")*\[*[*str*](https://docs.python.org/3/library/stdtypes.html#str "(in Python v3.13)")*] | None*) – List of instruction names.
**Returns**
Decomposition templates and cost values.
**Return type**
[*Dict*](https://docs.python.org/3/library/typing.html#typing.Dict "(in Python v3.13)")
</Function>
## Scheduling
| | |
| ------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------- |
| [`TimeUnitConversion`](qiskit.transpiler.passes.TimeUnitConversion "qiskit.transpiler.passes.TimeUnitConversion")(\*args, \*\*kwargs) | Choose a time unit to be used in the following time-aware passes, and make all circuit time units consistent with that. |
| [`ALAPScheduleAnalysis`](qiskit.transpiler.passes.ALAPScheduleAnalysis "qiskit.transpiler.passes.ALAPScheduleAnalysis")(\*args, \*\*kwargs) | ALAP Scheduling pass, which schedules the **stop** time of instructions as late as possible. |
| [`ASAPScheduleAnalysis`](qiskit.transpiler.passes.ASAPScheduleAnalysis "qiskit.transpiler.passes.ASAPScheduleAnalysis")(\*args, \*\*kwargs) | ASAP Scheduling pass, which schedules the start time of instructions as early as possible. |
| [`PadDynamicalDecoupling`](qiskit.transpiler.passes.PadDynamicalDecoupling "qiskit.transpiler.passes.PadDynamicalDecoupling")(\*args, \*\*kwargs) | Dynamical decoupling insertion pass. |
| [`PadDelay`](qiskit.transpiler.passes.PadDelay "qiskit.transpiler.passes.PadDelay")(\*args, \*\*kwargs) | Padding idle time with Delay instructions. |
| [`ConstrainedReschedule`](qiskit.transpiler.passes.ConstrainedReschedule "qiskit.transpiler.passes.ConstrainedReschedule")(\*args, \*\*kwargs) | Rescheduler pass that updates node start times to conform to the hardware alignments. |
| [`ValidatePulseGates`](qiskit.transpiler.passes.ValidatePulseGates "qiskit.transpiler.passes.ValidatePulseGates")(\*args, \*\*kwargs) | Check custom gate length. |
| [`InstructionDurationCheck`](qiskit.transpiler.passes.InstructionDurationCheck "qiskit.transpiler.passes.InstructionDurationCheck")(\*args, \*\*kwargs) | Duration validation pass for reschedule. |
| [`SetIOLatency`](qiskit.transpiler.passes.SetIOLatency "qiskit.transpiler.passes.SetIOLatency")(\*args, \*\*kwargs) | Set IOLatency information to the input circuit. |
| [`ALAPSchedule`](qiskit.transpiler.passes.ALAPSchedule "qiskit.transpiler.passes.ALAPSchedule")(\*args, \*\*kwargs) | ALAP Scheduling pass, which schedules the **stop** time of instructions as late as possible. |
| [`ASAPSchedule`](qiskit.transpiler.passes.ASAPSchedule "qiskit.transpiler.passes.ASAPSchedule")(\*args, \*\*kwargs) | ASAP Scheduling pass, which schedules the start time of instructions as early as possible.. |
| [`DynamicalDecoupling`](qiskit.transpiler.passes.DynamicalDecoupling "qiskit.transpiler.passes.DynamicalDecoupling")(\*args, \*\*kwargs) | Dynamical decoupling insertion pass. |
| [`AlignMeasures`](qiskit.transpiler.passes.AlignMeasures "qiskit.transpiler.passes.AlignMeasures")(\*args, \*\*kwargs) | Measurement alignment. |
## Circuit Analysis
| | |
| ---------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [`Width`](qiskit.transpiler.passes.Width "qiskit.transpiler.passes.Width")(\*args, \*\*kwargs) | Calculate the width of a DAG circuit. |
| [`Depth`](qiskit.transpiler.passes.Depth "qiskit.transpiler.passes.Depth")(\*args, \*\*kwargs) | Calculate the depth of a DAG circuit. |
| [`Size`](qiskit.transpiler.passes.Size "qiskit.transpiler.passes.Size")(\*args, \*\*kwargs) | Calculate the size of a DAG circuit. |
| [`CountOps`](qiskit.transpiler.passes.CountOps "qiskit.transpiler.passes.CountOps")(\*args, \*\*kwargs) | Count the operations in a DAG circuit. |
| [`CountOpsLongestPath`](qiskit.transpiler.passes.CountOpsLongestPath "qiskit.transpiler.passes.CountOpsLongestPath")(\*args, \*\*kwargs) | Count the operations on the longest path in a [`DAGCircuit`](qiskit.dagcircuit.DAGCircuit "qiskit.dagcircuit.DAGCircuit"). |
| [`NumTensorFactors`](qiskit.transpiler.passes.NumTensorFactors "qiskit.transpiler.passes.NumTensorFactors")(\*args, \*\*kwargs) | Calculate the number of tensor factors of a DAG circuit. |
| [`DAGLongestPath`](qiskit.transpiler.passes.DAGLongestPath "qiskit.transpiler.passes.DAGLongestPath")(\*args, \*\*kwargs) | Return the longest path in a [`DAGCircuit`](qiskit.dagcircuit.DAGCircuit "qiskit.dagcircuit.DAGCircuit") as a list of [`DAGOpNode`](qiskit.dagcircuit.DAGOpNode "qiskit.dagcircuit.DAGOpNode")s, [`DAGInNode`](qiskit.dagcircuit.DAGInNode "qiskit.dagcircuit.DAGInNode")s, and [`DAGOutNode`](qiskit.dagcircuit.DAGOutNode "qiskit.dagcircuit.DAGOutNode")s. |
## Synthesis
The synthesis transpiler plugin documentation can be found in the [`qiskit.transpiler.passes.synthesis.plugin`](transpiler_synthesis_plugins#module-qiskit.transpiler.passes.synthesis.plugin "qiskit.transpiler.passes.synthesis.plugin") page.
| | |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [`UnitarySynthesis`](qiskit.transpiler.passes.UnitarySynthesis "qiskit.transpiler.passes.UnitarySynthesis")(\*args, \*\*kwargs) | Synthesize gates according to their basis gates. |
| [`LinearFunctionsToPermutations`](qiskit.transpiler.passes.LinearFunctionsToPermutations "qiskit.transpiler.passes.LinearFunctionsToPermutations")(\*args, \*\*kwargs) | Promotes linear functions to permutations when possible. |
| [`HighLevelSynthesis`](qiskit.transpiler.passes.HighLevelSynthesis "qiskit.transpiler.passes.HighLevelSynthesis")(\*args, \*\*kwargs) | Synthesize higher-level objects and unroll custom definitions. |
| [`HLSConfig`](qiskit.transpiler.passes.HLSConfig "qiskit.transpiler.passes.HLSConfig")(\[use\_default\_on\_unspecified, ...]) | The high-level-synthesis config allows to specify a list of "methods" used by [`HighLevelSynthesis`](qiskit.transpiler.passes.HighLevelSynthesis "qiskit.transpiler.passes.HighLevelSynthesis") transformation pass to synthesize different types of higher-level objects. |
| [`SolovayKitaev`](qiskit.transpiler.passes.SolovayKitaev "qiskit.transpiler.passes.SolovayKitaev")(\*args, \*\*kwargs) | Approximately decompose 1q gates to a discrete basis using the Solovay-Kitaev algorithm. |
## Post Layout
These are post qubit selection.
| | |
| ---------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------- |
| [`VF2PostLayout`](qiskit.transpiler.passes.VF2PostLayout "qiskit.transpiler.passes.VF2PostLayout")(\*args, \*\*kwargs) | A pass for improving an existing Layout after transpilation of a circuit onto a Coupling graph, as a subgraph isomorphism problem, solved by VF2++. |
## Additional Passes
| | |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------- |
| [`CheckMap`](qiskit.transpiler.passes.CheckMap "qiskit.transpiler.passes.CheckMap")(\*args, \*\*kwargs) | Check if a DAG circuit is already mapped to a coupling map. |
| [`CheckGateDirection`](qiskit.transpiler.passes.CheckGateDirection "qiskit.transpiler.passes.CheckGateDirection")(\*args, \*\*kwargs) | Check if the two-qubit gates follow the right direction with respect to the coupling map. |
| [`GateDirection`](qiskit.transpiler.passes.GateDirection "qiskit.transpiler.passes.GateDirection")(\*args, \*\*kwargs) | Modify asymmetric gates to match the hardware coupling direction. |
| [`MergeAdjacentBarriers`](qiskit.transpiler.passes.MergeAdjacentBarriers "qiskit.transpiler.passes.MergeAdjacentBarriers")(\*args, \*\*kwargs) | Return a circuit with any adjacent barriers merged together. |
| [`RemoveBarriers`](qiskit.transpiler.passes.RemoveBarriers "qiskit.transpiler.passes.RemoveBarriers")(\*args, \*\*kwargs) | Return a circuit with any barrier removed. |
| [`BarrierBeforeFinalMeasurements`](qiskit.transpiler.passes.BarrierBeforeFinalMeasurements "qiskit.transpiler.passes.BarrierBeforeFinalMeasurements")(\*args, \*\*kwargs) | Add a barrier before final measurements. |
| [`RemoveFinalMeasurements`](qiskit.transpiler.passes.RemoveFinalMeasurements "qiskit.transpiler.passes.RemoveFinalMeasurements")(\*args, \*\*kwargs) | Remove final measurements and barriers at the end of a circuit. |
| [`DAGFixedPoint`](qiskit.transpiler.passes.DAGFixedPoint "qiskit.transpiler.passes.DAGFixedPoint")(\*args, \*\*kwargs) | Check if the DAG has reached a fixed point. |
| [`FixedPoint`](qiskit.transpiler.passes.FixedPoint "qiskit.transpiler.passes.FixedPoint")(\*args, \*\*kwargs) | Check if a property reached a fixed point. |
| [`MinimumPoint`](qiskit.transpiler.passes.MinimumPoint "qiskit.transpiler.passes.MinimumPoint")(\*args, \*\*kwargs) | Check if the DAG has reached a relative semi-stable point over previous runs |
| [`ContainsInstruction`](qiskit.transpiler.passes.ContainsInstruction "qiskit.transpiler.passes.ContainsInstruction")(\*args, \*\*kwargs) | An analysis pass to detect if the DAG contains a specific instruction. |
| [`GatesInBasis`](qiskit.transpiler.passes.GatesInBasis "qiskit.transpiler.passes.GatesInBasis")(\*args, \*\*kwargs) | Check if all gates in a DAG are in a given set of gates |
| [`ConvertConditionsToIfOps`](qiskit.transpiler.passes.ConvertConditionsToIfOps "qiskit.transpiler.passes.ConvertConditionsToIfOps")(\*args, \*\*kwargs) | Convert instructions whose `condition` attribute is set to a non-`None` value into the equivalent single-statement `IfElseBlock`. |
| [`UnrollForLoops`](qiskit.transpiler.passes.UnrollForLoops "qiskit.transpiler.passes.UnrollForLoops")(\*args, \*\*kwargs) | `UnrollForLoops` transpilation pass unrolls for-loops when possible. |
| [`FilterOpNodes`](qiskit.transpiler.passes.FilterOpNodes "qiskit.transpiler.passes.FilterOpNodes")(\*args, \*\*kwargs) | Remove all operations that match a filter function |
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