google/heir

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A compiler for homomorphic encryption

Stars: 906
Forks: 171
Open beginner issues: 1
Indexed issues: 329
Avg merge: 4d 12h
Merged PRs (30d): 32

Dominant language: MLIR
License: Apache-2.0
Last GitHub push: Sep 15, 2026
Latest indexed: Sep 16, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Open All

329 open issues indexed

poly: add poly.constant folding and materialization Open

dialect: polynomial

google/heir#97 · 13 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
bgv: add lowering to poly Open

dialect: bgv enhancement newcomer project

google/heir#109 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
poly: determine if the poly_mod function name needs to include the input tensor type Open

dialect: polynomial good first issue

google/heir#202 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
[poly]: `heir-polynomial-to-llvm` sometimes requires 128-bit math, should have the option to avoid it Open

dialect: polynomial

google/heir#220 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
bgv: incorporate key switching optimizations in Mono-Güneysu 2023 Open

dialect: bgv research synthesis

google/heir#252 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
cggi: add lower-level CGGI ops Open

dialect: cggi newcomer project

google/heir#255 · 4 comments · 2 reactions · 0 assignees · Indexed Sep 16, 2026
Port Orion to HEIR Open

research synthesis

google/heir#269 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add a noise model analysis pass for LWE/CGGI Open

analysis newcomer project

google/heir#273 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add gadget decomposition IR constructions to the `lwe` dialect. Open

newcomer project

google/heir#276 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Port Coyote to HEIR Open

research synthesis

google/heir#279 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Port Viaduct-HE to HEIR Open

research synthesis

google/heir#280 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Correct the likely-incorrect noise propagation model for CGGI Open

analysis dialect: cggi

google/heir#297 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Investigate what parts of https://github.com/heir-compiler/heir can be ported to HEIR Open

research synthesis

google/heir#300 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Investigate what parts of Li-Yamana 2023 can be incorporated into HEIR Open

research synthesis

google/heir#310 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add a configuration flag that allows `StraightLineVectorizer` to create vectorized ops of a specific width Open

dialect: cggi

google/heir#343 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Investigate incorporating PEGASUS for CKKS / FHEW scheme switching Open

research synthesis

google/heir#376 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Determine what parts of HEQuant can be incorporated into HEIR Open

research synthesis

google/heir#411 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Find a way to connect HEIR parameters to API parameter settings Open

dialect: lwe dialect: openfhe newcomer project

google/heir#465 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
tfhe-rs-emitter: Support all tfhe encrypted types. Open

dialect: tfhe_rust good first issue

google/heir#474 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Complete initial bgv -> llvm lowering path Open

dialect: bgv dialect: polynomial dialect: rns newcomer project

google/heir#499 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Type materialization bug when lowering polynomial to standard Open

bug dialect: polynomial

google/heir#505 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add `tensor_ext.combine` and an associated pattern to replace collapse-insertion-chains Open

dialect: tensor_ext enhancement newcomer project

google/heir#512 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Determine if `AlignRotations` pattern needs more complex patterns Open

dialect: tensor_ext

google/heir#514 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Vectorizer tests flake due to nondeterminism Open

bug

google/heir#519 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
rotate-and-reduce: apply for sums of contiguous regions exceeding a threshold Open

dialect: tensor_ext newcomer project

google/heir#521 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
rotate-and-reduce: support variations on simple reduction patterns Open

dialect: tensor_ext newcomer project

google/heir#522 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Determine if nested `AlignRotations` patterns are still necessary Open

dialect: tensor_ext good first issue

google/heir#579 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Determine how to generically identify and handle plaintext-ciphertext ops in `insert-rotate` Open

dialect: tensor_ext newcomer project

google/heir#586 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Avoid fully unrolling loops for insert-rotate Open

google/heir#589 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Port optimizations from HEaaN.mlir paper Open

optimization research synthesis

google/heir#635 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
Write a pass to materialize `root` parameter of ring polynomials Open

dialect: polynomial newcomer project

google/heir#643 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Improve the pre-computed `root` parameters of polynomial rings Open

dialect: polynomial good first issue

google/heir#644 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Support encoding short tensors into BGV ciphertexts of restricted dimension Open

dialect: bgv dialect: openfhe good first issue

google/heir#645 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Compare SOTA FHE polynomial approximations with HEIR's CF approximation Open

dialect: polynomial research synthesis

google/heir#658 · 17 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Investigate what parts of CiFlow can be incorporated into HEIR Open

research synthesis

google/heir#683 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Write documentation for people who want to integrate a hardware accelerator Open

documentation

google/heir#698 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Add passes to convert `arith.remui` to use the `arith_ext` ops Open

newcomer project

google/heir#710 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Update SIMD design doc with more details Open

dialect: tensor_ext documentation

google/heir#721 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
feat: StableHLO as a front end for HEIR Open

google/heir#738 · 3 comments · 7 reactions · 1 assignee · Indexed Sep 16, 2026
Rotation Keys & Composite Rotations Open

dialect: bgv dialect: ckks dialect: tensor_ext enhancement newcomer project

google/heir#744 · 10 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
Add `arith.cmpi` lowering from Iliashenko & Zucca to `--secret-to-bgv` Open

dialect: bgv dialect: secret

google/heir#827 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Support Higher Dimensional Ciphertexts and Keys for TFHE when Lowering RLWE to Polynomial Open

dialect: lwe

google/heir#834 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Multiplicative and Additive Balancing Open

good first issue newcomer project optimization

google/heir#836 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Distributive Property Optimization Open

optimization

google/heir#837 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Loop Transformation: Add support for do-while loops Open

google/heir#846 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 16, 2026
Use types.LwePlaintext and types.LweCiphertext in jaxite dialect to mirror Jaxite API Open

google/heir#855 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Access Transformation: Add support for multi-dimensional tensors Open

google/heir#866 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Only apply SIMD vectorization to tensors that are secret Open

dialect: tensor_ext

google/heir#869 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Random Dialect Cleanups Open

dialect: random

google/heir#873 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add Python Bindings Open

build

google/heir#879 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026

google/heir

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