✨ Support symbolic Qiskit parameters - #2150
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simon1hofmann
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📝 WalkthroughSummary by CodeRabbitNew Features
Bug Fixes
Documentation
WalkthroughQiskit import and export now support named symbolic parameters and bounded real-valued expressions. The implementation preserves symbol identity across scopes, gates, definitions, loops, and global phase. Validation rejects unsupported, malformed, oversized, or unused expressions before mutation. ChangesSymbolic Qiskit translation
Estimated code review effort: 5 (Critical) | ~120 minutes Merge Risk: 🔵 Low · up to A new test helper is missing the repository-required docstring and may fail the lint gate; the PR is otherwise mergeable once this bounded issue is fixed or explicitly accepted by the owner. Possibly related PRs
Suggested labels: Suggested reviewers: Poem
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches✨ Simplify code
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Actionable comments posted: 1
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Inline comments:
In `@test/python/test_mlir_qiskit_translation.py`:
- Around line 1283-1288: The helper _wide_parameter_expression_program is
missing the required Google-style docstring. Add a concise summary and a
Returns: section describing that it returns the generated wide
parameter-expression QCProgram, matching the style of _assign_parameter_values;
do not suppress the lint diagnostic.
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📒 Files selected for processing (12)
.agent/plans/qiskit-circuit-translation.md.agent/plans/qiskit-symbolic-parameters.mdCHANGELOG.mdbindings/mlir/qiskit/Qiskit2_5.cppbindings/mlir/qiskit/QiskitExport.cppbindings/mlir/qiskit/QiskitImport.cppbindings/mlir/qiskit/QiskitTranslation.hdocs/mlir/python_compiler_collection.mdmlir/include/mlir/Dialect/Utils/Utils.hmlir/lib/Compiler/CMakeLists.txtmlir/lib/Compiler/Programs.cpptest/python/test_mlir_qiskit_translation.py
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I'll give this a thorough review and may come back with some changes; hope that is fine 😌 |
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Alright. I believe this is quite nice now. I mainly tried to accomplish two things:
While this has made the PR quite a bit larger, I looked through all the changes now and think that this is pretty clean. @munich-quantum-toolkit/mqt-cc for awareness. |
Thanks a lot for the additions, really like the added MQT metadata dialect 👍 I looked through the added commits and they all look good from my side. |
I can only second this! 😎 |
burgholzer
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burgholzer
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Alright, 391e0a2 is the last cleanup I had in mind.
I believe this should be ready to go in now (pending green CI)!
(I hope that these PRs where we change 100+ files become less as we move towards the stable release 😅)
Assisted-by: GPT-5.6 via Codex Signed-off-by: Simon Hofmann <simon.t.hofmann@tum.de>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com> Signed-off-by: simon1hofmann <119581649+simon1hofmann@users.noreply.github.com>
Define typed discardable attributes for program-input and qubit-register names. Verify their placement, string values, and per-function uniqueness through the owning dialect. Assisted-by: Codex
Replace raw mqt attribute keys with generated dialect helpers and load the metadata dialect in every compiler and translation context. Preserve all discardable metadata through QC/QCO allocation conversions and register-shrink rewrites. Validate the shared contract while parsing QC IR. Assisted-by: Codex
Remove Qiskit UUIDs from the normalized parameter representation and key import, export, and writer state by the supported unique source name. Reject collisions across free and lexically bound parameters during preflight, including binders in separate scopes. Assisted-by: Codex
Represent normalized parameters as a private variant of number, symbol, unary, and binary nodes with separate operator enums. Construct expression nodes through factories with required operands, then remove redundant malformed-tree checks from import, export, and native Qiskit writing. Assisted-by: Codex
Move the static finiteness contract into the shared QC and QCO unitary interface verifiers. Remove redundant Qiskit boundary checks while preserving source preflight and global-phase overflow protection. Assisted-by: Codex
Make the operation-free MQT dialect visible to the MLIR documentation generator through OpBase.td. Normalize the new-file license headers and record the final validation results. Assisted-by: Codex
Replace the CBit source-name field and the qubit-specific metadata with one mqt.register_name contract. Verify one function-wide namespace across inputs and registers, preserve register names through CBit lowering, and reject Qiskit name collisions before IR construction. Assisted-by: Codex
Replace high-level LLVM passthrough strings with the verified mqt.entry_point attribute. Preserve it across QC/QCO and jeff conversions, then lower it to QIR passthrough metadata at the LLVM boundary. Assisted-by: Codex
Add the generated MQT dialect declarations to MLIR's global header target. This ensures clean parallel builds generate MQTDialect.h.inc before compiling any dialect consumer. Assisted-by: Codex
Centralize entry-point metadata access in the MQT dialect, restrict pass dependencies to produced dialects, and remove redundant namespace qualifiers where unambiguous. Assisted-by: Codex
Expose the generated MQT dialect reference through the compiler collection documentation and its table of contents. Assisted-by: Codex
Reference symbolic Qiskit parameters from the general MQT Compiler Collection launch entry. Assisted-by: Codex
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Use direct includes, designated initializers, and static file-local helpers across the symbolic Qiskit parameter changes. Assisted-by: Codex
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Let's get this in as soon as the CI is green 🚀 |
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🤖 AI text below 🤖
Description
f64compiler inputs and lower abounded, frontend-neutral real expression tree to Arith/Math SSA.
distinct identities, partially bound expressions, global phase, custom
definitions, and lexical loop bindings.
Parameterper compiler input and rejectmalformed, unsupported, non-finite, excessive, or unused named inputs during
preflight without mutating either source object.
ParameterVectorprovenance out of this PR. The final stack itemadds that metadata after structured-control export is in place.
The implementation uses the first-class CBit model introduced by #2158.
Closes #2067.
Stack
Testing
test/python/test_mlir_qiskit_translation.py: 158 passed.uvx nox -s lint: passed.AI assistance: Codex assisted with implementation, review, testing, stack
construction, and this description.
Checklist
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