google/heir
Jan 2026 – Jun 2026
6 Months active
Languages Used
C++BazelMLIR
Technical Skills
C++CryptographyMLIRC++ developmentCode maintenanceCompiler design
Eric Crockett
PROFILE
Eric Crockett
Over six months, this developer enhanced the google/heir repository by delivering fourteen features and addressing core bugs across modular arithmetic, polynomial transformations, and cryptographic operations. They focused on improving runtime efficiency and maintainability by refactoring CKKS and LWE dialects, optimizing NTT/INTT polynomial operations, and streamlining build configurations. Their work included implementing MLIR-based transformation passes, introducing new modular arithmetic interfaces, and strengthening type safety and error handling. Using C++, MLIR, and Bazel, they prioritized code clarity, robust testing, and performance tuning, resulting in more reliable, maintainable, and performant cryptographic and numeric computation workflows within the project’s evolving architecture.
Overall Statistics
Feature vs Bugs
88%Features
Repository Contributions
29Total
Bugs
2
Commits
29
Features
14
Lines of code
7,211
Activity Months6
Your Network
68 peopleWork History
June 2026
10 Commits • 4 Features
Jun 1, 2026June 2026 monthly summary for google/heir focusing on delivering safety, performance, and dialect cohesion across MLIR-based modular arithmetic and cryptographic operations. Highlights include feature work (ModArith enhancements with LiftOp, removal of ExtractOp, bit-width aware constant parsing), dialect migrations (CKKS to LWE KeySwitchInnerOp), performance optimizations (RNSExtractSlice lowering, AttachNTTRoots caching), and tooling/stability improvements (build warnings suppression, conversion enhancements, API updates), plus a targeted bug fix for eval-form polynomial safety guards with tests.
10 Commits • 4 Features
Jun 1, 2026June 2026 monthly summary for google/heir focusing on delivering safety, performance, and dialect cohesion across MLIR-based modular arithmetic and cryptographic operations. Highlights include feature work (ModArith enhancements with LiftOp, removal of ExtractOp, bit-width aware constant parsing), dialect migrations (CKKS to LWE KeySwitchInnerOp), performance optimizations (RNSExtractSlice lowering, AttachNTTRoots caching), and tooling/stability improvements (build warnings suppression, conversion enhancements, API updates), plus a targeted bug fix for eval-form polynomial safety guards with tests.
June 2026
May 2026
1 Commits • 1 Features
May 1, 2026In May 2026 (Month: 2026-05), the developer delivered a focused cleanup and test-streamlining effort for the google/heir repository, centered on the Polynomial-to-Mod-Arith conversion. Key changes remove extraneous options, streamline the test suite by removing an obsolete test file, and align the conversion process with the intended design. This reduced maintenance burden and prepared the pathway for faster future iterations.
May 2026
1 Commits • 1 Features
May 1, 2026In May 2026 (Month: 2026-05), the developer delivered a focused cleanup and test-streamlining effort for the google/heir repository, centered on the Polynomial-to-Mod-Arith conversion. Key changes remove extraneous options, streamline the test suite by removing an obsolete test file, and align the conversion process with the intended design. This reduced maintenance burden and prepared the pathway for faster future iterations.
April 2026
8 Commits • 3 Features
Apr 1, 2026Summary for 2026-04 focusing on google/heir: Key features delivered, major bugs fixed, overall impact, and technologies demonstrated. Highlights include correctness fixes for polynomial operations (type inference in extract_slice and PolyMulToNTT accounting for NTT counts), regression tests and enhanced shape inference for polynomial transformations, RNS basis extension and modular arithmetic interface enhancements (ModArithTypeInterface and residue counts), and CKKS transformation efficiency improvements via walking-pattern application. These changes improve reliability, performance, and integration capabilities, reducing risk in cryptographic computations and enabling faster, more maintainable code.
8 Commits • 3 Features
Apr 1, 2026Summary for 2026-04 focusing on google/heir: Key features delivered, major bugs fixed, overall impact, and technologies demonstrated. Highlights include correctness fixes for polynomial operations (type inference in extract_slice and PolyMulToNTT accounting for NTT counts), regression tests and enhanced shape inference for polynomial transformations, RNS basis extension and modular arithmetic interface enhancements (ModArithTypeInterface and residue counts), and CKKS transformation efficiency improvements via walking-pattern application. These changes improve reliability, performance, and integration capabilities, reducing risk in cryptographic computations and enabling faster, more maintainable code.
April 2026
March 2026
4 Commits • 2 Features
Mar 1, 2026Monthly Summary for 2026-03 (google/heir): Key features delivered: - PolyMulToNTT Transformation Improvements: consolidated improvements to PolyMulToNTT, including dead-code elimination in the PolyMulToNTT pass to remove unnecessary operations; optimized handling of constant polynomials via materialization and removal of inferReturnTypes; updated statistics for NTT/INTT ops and added a documentation example. - Roots of Unity Attachment Pass for Polynomial Dialect: introduced a new transformation pass to attach appropriate roots of unity to NTTs and INTTs, updating attributes and operations and adding docs/tests to validate the feature. Major bugs fixed: - Fixed issue 2731 by materializing constants in the correct form instead of converting them. - Fix #2684 related to the Roots of Unity attachment pass. Overall impact and accomplishments: - Performance and correctness improvements: dead-code elimination in PolyMulToNTT reduces unnecessary work; correct constant materialization fixes edge-case correctness; updated NTT/INTT statistics improve observability and benchmarking; new docs/tests strengthen validation. - Maintainability and documentation: added a concrete documentation example and test coverage for PolyMulToNTT and Roots of Unity passes, facilitating future maintenance and onboarding. Technologies/skills demonstrated: - MLIR-based transformation passes for polynomial arithmetic (PolyMulToNTT and Roots of Unity attachment pass) - Dead-code elimination, constant materialization strategies, and statistics instrumentation - Roots of unity mathematics in NTT/INTT contexts - Documentation and test-driven development to validate behavior Business value: - Delivers faster, more reliable polynomial transforms critical for performance-sensitive numeric and cryptographic workloads, with improved observability and maintainability for ongoing optimization.
March 2026
4 Commits • 2 Features
Mar 1, 2026Monthly Summary for 2026-03 (google/heir): Key features delivered: - PolyMulToNTT Transformation Improvements: consolidated improvements to PolyMulToNTT, including dead-code elimination in the PolyMulToNTT pass to remove unnecessary operations; optimized handling of constant polynomials via materialization and removal of inferReturnTypes; updated statistics for NTT/INTT ops and added a documentation example. - Roots of Unity Attachment Pass for Polynomial Dialect: introduced a new transformation pass to attach appropriate roots of unity to NTTs and INTTs, updating attributes and operations and adding docs/tests to validate the feature. Major bugs fixed: - Fixed issue 2731 by materializing constants in the correct form instead of converting them. - Fix #2684 related to the Roots of Unity attachment pass. Overall impact and accomplishments: - Performance and correctness improvements: dead-code elimination in PolyMulToNTT reduces unnecessary work; correct constant materialization fixes edge-case correctness; updated NTT/INTT statistics improve observability and benchmarking; new docs/tests strengthen validation. - Maintainability and documentation: added a concrete documentation example and test coverage for PolyMulToNTT and Roots of Unity passes, facilitating future maintenance and onboarding. Technologies/skills demonstrated: - MLIR-based transformation passes for polynomial arithmetic (PolyMulToNTT and Roots of Unity attachment pass) - Dead-code elimination, constant materialization strategies, and statistics instrumentation - Roots of unity mathematics in NTT/INTT contexts - Documentation and test-driven development to validate behavior Business value: - Delivers faster, more reliable polynomial transforms critical for performance-sensitive numeric and cryptographic workloads, with improved observability and maintainability for ongoing optimization.
February 2026
4 Commits • 3 Features
Feb 1, 2026February 2026: Focused on core expressiveness and maintainability improvements for google/heir. Delivered MLIR polynomial dialect enhancements with NTT/INTT support and polyattr forms; cleaned Bazel build configuration to reduce noise from external/auto-generated code; modernized API usage by standardizing operation creation to Op::create(builder, ...). No major bugs fixed this month. Impact: richer polynomial representations, clearer builds, and improved code readability and maintainability.
4 Commits • 3 Features
Feb 1, 2026February 2026: Focused on core expressiveness and maintainability improvements for google/heir. Delivered MLIR polynomial dialect enhancements with NTT/INTT support and polyattr forms; cleaned Bazel build configuration to reduce noise from external/auto-generated code; modernized API usage by standardizing operation creation to Op::create(builder, ...). No major bugs fixed this month. Impact: richer polynomial representations, clearer builds, and improved code readability and maintainability.
February 2026
January 2026
2 Commits • 1 Features
Jan 1, 2026Month 2026-01: Delivered CKKS Dialect: Key-switching and Relinearization Enhancements in google/heir. Replaced the previous approach of lowering RelinearizationOp to Polynomial with a dedicated CKKS dialect operation, boosting runtime efficiency and code clarity for key-switching and relinearization. Added coefficient extraction and input verification operations to strengthen cryptographic integrity. Implemented KeySwitchInner decomposition with new utilities to support decomposition, leading to cleaner, more maintainable code and easier future enhancements. This work reduces complexity in cryptographic paths and enables more reliable performance for homomorphic encryption workloads, setting the stage for further optimizations. Commit references: 6e2ec6f307e319b804c41e604d9bb9bd9dc6c590; 44c356c56ad84295c2f18586911b20ae20e65dac.
January 2026
2 Commits • 1 Features
Jan 1, 2026Month 2026-01: Delivered CKKS Dialect: Key-switching and Relinearization Enhancements in google/heir. Replaced the previous approach of lowering RelinearizationOp to Polynomial with a dedicated CKKS dialect operation, boosting runtime efficiency and code clarity for key-switching and relinearization. Added coefficient extraction and input verification operations to strengthen cryptographic integrity. Implemented KeySwitchInner decomposition with new utilities to support decomposition, leading to cleaner, more maintainable code and easier future enhancements. This work reduces complexity in cryptographic paths and enables more reliable performance for homomorphic encryption workloads, setting the stage for further optimizations. Commit references: 6e2ec6f307e319b804c41e604d9bb9bd9dc6c590; 44c356c56ad84295c2f18586911b20ae20e65dac.
Activity
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Quality Metrics
Correctness93.2%
Maintainability82.8%
Architecture85.4%
Performance83.4%
AI Usage27.6%
Skills & Technologies
Programming Languages
BazelC++MLIR
Technical Skills
API integrationC++C++ DevelopmentC++ developmentC++ programmingCode maintenanceCode refactoringCompiler DesignCompiler designCryptographyError HandlingMLIRModular ArithmeticRNSSoftware architecture
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