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Qiskit / qiskit / 18941214377
88%

Build:
DEFAULT BRANCH: main
Ran 30 Oct 2025 01:33PM UTC
Jobs 1
Files 873
Run time 3min
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30 Oct 2025 12:26PM UTC coverage: 88.18% (+0.01%) from 88.167%
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Optimize the `OptimizeCliffordT` transpiler pass. (#14996)

* Porting the CliffordT optimization pass to Rust.

At this point the pass is still very naive and only cancels pairs of adjacent T-gates and pairs of
adjacent Tdg-gates.

A change in behavior: the pass raises an error if the circuit has non-(Clifford+T) gates.

* moving optimization code to a seperate functions

* Reimplementing Clifford+T optimization algorithm.

The optimization applies to sequences of 1-qubit Clifford+T/Tdg gates. We believe that for 1-qubit circuits
we get optimal T-counts.

* using StandardGate::X instead of X, as not to confuse with similarly-named Paulis

* Improved comments and adding Shelly as a co-author.

Co-authored-by: Shelly Garion <shelly@il.ibm.com>"

* removing unused imports

* missing i in the comment

* and removing 2

* This time properly adding Shelly as co-author

Co-authored-by: Shelly Garion <shelly@il.ibm.com>

* lint + avoid unnecessary collection

* changing const to static

* changing usize to u8

* adding release note

* adding a few additional sanity tests

* removing print

---------

Co-authored-by: Shelly Garion <shelly@il.ibm.com>

216 of 245 new or added lines in 4 files covered. (88.16%)

4 existing lines in 4 files now uncovered.

93854 of 106435 relevant lines covered (88.18%)

1155834.65 hits per line

New Missed Lines in Diff

Lines Coverage ∆ File
29
87.92
crates/transpiler/src/passes/optimize_clifford_t.rs

Uncovered Existing Lines

Lines Coverage ∆ File
1
81.99
0.0% crates/circuit/src/parameter/parameter_expression.rs
1
72.98
0.04% crates/circuit/src/parameter/symbol_expr.rs
1
93.82
-0.24% crates/qasm2/src/expr.rs
1
91.52
1.03% crates/qasm2/src/lex.rs
Jobs
ID Job ID Ran Files Coverage
1 18941214377.1 30 Oct 2025 01:33PM UTC 873
88.18
GitHub Action Run
Source Files on build 18941214377
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  • List 873
  • Changed 8
  • Source Changed 3
  • Coverage Changed 8
Coverage ∆ File Lines Relevant Covered Missed Hits/Line
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