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Ran 25 Mar 2026 08:00AM UTC

Files 928

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Committed 25 Mar 2026 07:27AM UTC coverage: 87.114% (-0.1%) from 87.258%

Job # 23529822197.1

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push

github

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web-flow

Commit Message

Add fixed size 2q matrix methods to operations and PackedInstruction (#15858)

This commit adds new methods to the circuit operation types and the
PackedInstruction type to support getting fixed size 2q matrices. 2q
matrices are only 16 complex numbers and are commonly used in the
transpiler as part of peephole optimization and other optimizations.
Using a fixed size array for these will avoid needing heap allocation
and also let the compiler potentially do more compile time optimization
because the compiler knows exactly how many values are being used for
operations. We already exposed these methods for 1q gates for the same
reason, this just expands it to 2q gates. We probably won't go beyond
this for 3q gates however, because they're 8x8 so too large and also
are not as commonly used as 2q gates and matrices.

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