feat: skip inverting field elements with values +-1 in ACVM by TomAFrench · Pull Request #8049 · noir-lang/noir

TomAFrench · 2025-04-14T09:59:57Z

Description

Problem*

Resolves

Summary*

I held off on this previously as supposedly this didn't affect benchmarks but it causes a 90% drop in the ACVM benchmarks I added recently.

We now skip the inversion when solving an AssertZero opcode in cases where the denominator is +-1 as we can convert them into a multiplication.

Additional Context

Documentation*

Check one:

No documentation needed.
Documentation included in this PR.
[For Experimental Features] Documentation to be submitted in a separate PR.

PR Checklist*

I have tested the changes locally.
I have formatted the changes with Prettier and/or cargo fmt on default settings.

kashbrti · 2025-04-14T10:03:11Z

interesting. We tried this with @Rumata888 a while back, and we didn't notice a big change.

Rumata888 · 2025-04-14T10:51:16Z

I don't get it. We literally did the same thing and noticed no change whatsoever. Maybe it was being recompiled and all the benefits from faster witness generation were being overshadowed

Automated pull of nightly from the [noir](https://github.com/noir-lang/noir) programming language, a dependency of Aztec. BEGIN_COMMIT_OVERRIDE fix: allow keywords in function names in SSA parser (noir-lang/noir#8063) chore: don't use `set_value_from_id` in `as_slice_length` (noir-lang/noir#8039) fix(ssa): Do not use inner else condition when collapsing IfElse based upon the then condition (noir-lang/noir#8040) chore(test): AST generation calibration test (noir-lang/noir#8054) chore(ssa): Remove IfElse pass basic SSA tests (noir-lang/noir#8058) chore(ssa): Additional unrolling and mem2reg passes (noir-lang/noir#8017) chore: bump external pinned commits (noir-lang/noir#8045) chore: bump bb to 0.84.0 (noir-lang/noir#8047) chore: Add `GITHUB_TOKEN` to more workflow steps (noir-lang/noir#8046) feat: skip inverting field elements with values +-1 in ACVM (noir-lang/noir#8049) END_COMMIT_OVERRIDE --------- Co-authored-by: TomAFrench <tom@tomfren.ch> Co-authored-by: AztecBot <tech@aztecprotocol.com>

🤖 I have created a new Aztec Packages release --- ## [0.86.0](v0.85.0...v0.86.0) (2025-04-24) ### ⚠ BREAKING CHANGES * Use combined p2p and http prover coordination ([#13760](#13760)) * use single extended viem client ([#13715](#13715)) * remove slice read from CALL ([#13729](#13729)) ### Features * `#[allow(dead_code)]` (noir-lang/noir#8066) ([366d980](366d980)) * add aztec-up amm test w/ proving & sponsoredfpc ([#13209](#13209)) ([f54c8a1](f54c8a1)) * Add Rollup to registry and produce blocks ([#13556](#13556)) ([9ed10d3](9ed10d3)) * adding devnet tests ([#12808](#12808)) ([7687a1f](7687a1f)) * audit tracking tooling ([#13639](#13639)) ([e50d8e0](e50d8e0)) * **avm:** fast entity indexing without macros ([#13737](#13737)) ([5c8a993](5c8a993)) * **avm:** quick n dirty memory trace ([#13659](#13659)) ([062c6a9](062c6a9)) * **avm:** support col arrays and add keccak cols ([#13711](#13711)) ([9c4345a](9c4345a)) * **avm:** tagged value type in C++ ([#13540](#13540)) ([b30b5b3](b30b5b3)) * avoid unnecessary zero check in brillig overflow check (noir-lang/noir#8109) ([366d980](366d980)) * **contracts:** static + snapshotted validator set ([#13046](#13046)) ([90033f2](90033f2)) * enable mempool limiter on devnet ([#13722](#13722)) ([36fb0a1](36fb0a1)) * exec opcode spec table ([#13594](#13594)) ([d4d503a](d4d503a)) * **experimental:** Implement separate `-Zownership` analysis for ownership pass (noir-lang/noir#7861) ([366d980](366d980)) * expose mempool limit through helm chart ([#13616](#13616)) ([822e8d9](822e8d9)) * Garaga UltraStarknet[Zk]Honk flavours ([#11489](#11489)) ([6bc34a1](6bc34a1)) * IPA claim as public component ([#13429](#13429)) ([1ce3c43](1ce3c43)) * no longer recompute vk's in CIVC proofs ([#13590](#13590)) ([66a61ba](66a61ba)) * **p2p:** add private peers ([#12585](#12585)) ([4264c8c](4264c8c)) * **p2p:** optional P2P_BROADCAST_PORT ([#13525](#13525)) ([f709fab](f709fab)) * Port callstack resolution from aztec to noirjs (noir-lang/noir#7642) ([366d980](366d980)) * Refactor IPA claim handling in acir format to support them for AVM ([#13547](#13547)) ([df73c05](df73c05)) * remove slice read from CALL ([#13729](#13729)) ([7e7eb85](7e7eb85)) * replace field divisions by constants with multiplication by inv… (noir-lang/noir#8053) ([366d980](366d980)) * report world state size on disk ([#13706](#13706)) ([0dd8a7e](0dd8a7e)) * skip inverting field elements with values +-1 in ACVM (noir-lang/noir#8049) ([44c1347](44c1347)) * SMT Verificaiton Module: Data Structures ([#13658](#13658)) ([2de3bc5](2de3bc5)) * SMT verification module updates ([#13551](#13551)) ([f02123d](f02123d)) * ssa fuzzer (noir-lang/noir#7641) ([366d980](366d980)) * Tighter timing on ACVM ([#13743](#13743)) ([45cd39b](45cd39b)) * track rewards and slots ([#13546](#13546)) ([489c6cf](489c6cf)) * Use combined p2p and http prover coordination ([#13760](#13760)) ([4d04e62](4d04e62)) * VK generation test for HonkRecursionConstraint ([#13637](#13637)) ([71e81ce](71e81ce)) ### Bug Fixes * **acir:** Check whether opcodes were laid down for non-equality check before fetching payload locations (noir-lang/noir#8133) ([366d980](366d980)) * add proper handling for `u128` in comptime interpreter (noir-lang/noir#8079) ([366d980](366d980)) * Add version to gossipsub protocol ([#13567](#13567)) ([8ce4829](8ce4829)) * allow keywords in function names in SSA parser (noir-lang/noir#8063) ([44c1347](44c1347)) * Allow more slack in AST calibration for CI (noir-lang/noir#8076) ([366d980](366d980)) * amm bot ([#13553](#13553)) ([6b93832](6b93832)), closes [#13544](#13544) * **avm:** cpp addressing ([#13652](#13652)) ([9d941b6](9d941b6)) * blob sink waits for reg address when needed ([#13628](#13628)) ([486a42a](486a42a)) * **brillig:** SliceRefCount reads from the appropriate pointer (noir-lang/noir#8148) ([366d980](366d980)) * Check against multiple aws profiles in build instance credentails ([#13421](#13421)) ([71a408a](71a408a)) * dependency cycles in public simulator - part 0 (sim -> context) ([#13678](#13678)) ([e00089f](e00089f)) * dependency cycles in public simulator - part 1 (errors/revertReason) ([#13679](#13679)) ([c75e365](c75e365)) * dependency cycles in public simulator part 2 (serializable bytecode) ([#13680](#13680)) ([5d3e24c](5d3e24c)) * discv5 test failure ([#13653](#13653)) ([58c143b](58c143b)) * **docs:** Make viewing (outdated) protocol specs work locally ([#13534](#13534)) ([694537d](694537d)) * Increase timeout for p2p integration test ([#13720](#13720)) ([c244b2e](c244b2e)) * mac bb --version ([#13690](#13690)) ([9f8b64f](9f8b64f)) * make translator use ultra rather than eccvm ops ([#13489](#13489)) ([53c070d](53c070d)) * more worker fixes ([#13759](#13759)) ([080485a](080485a)) * move helm lint to build ([#13532](#13532)) ([7768ff8](7768ff8)) * native ivc benches not publishing ([#13665](#13665)) ([7ab712d](7ab712d)) * no exports of simulator should depend on jest-mock-extended ([#13694](#13694)) ([65a9f33](65a9f33)) * only clear trailing zeros on logs ([#13727](#13727)) ([e392d7c](e392d7c)) * **p2p:** better batch connection sampling ([#13674](#13674)) ([9c1d9f1](9c1d9f1)) * **p2p:** reqresp types + batch request tx pool filtering ([#13666](#13666)) ([8e2a3c9](8e2a3c9)) * **parser:** error on missing let semicolon in trait (and others) (noir-lang/noir#8101) ([366d980](366d980)) * pass along coinbase ([#13560](#13560)) ([593f810](593f810)), closes [#13643](#13643) * prover-node start ([#13627](#13627)) ([5d87f7a](5d87f7a)) * quote numbers ([#13654](#13654)) ([f0d1ec1](f0d1ec1)) * remove all txs from a failed epoch ([#13771](#13771)) ([abc4623](abc4623)) * remove insecure dummy round derivation from sumcheck and shplemini ([#13488](#13488)) ([9a3bb46](9a3bb46)) * replace values in data_bus too (noir-lang/noir#8086) ([366d980](366d980)) * retry deploy npm ([#13691](#13691)) ([76cab3f](76cab3f)) * run yarn ([#13713](#13713)) ([0e51259](0e51259)) * squash nightly foundry warning ([#13640](#13640)) ([e21f9fd](e21f9fd)) * SSA pass print filter to include the count (noir-lang/noir#8074) ([366d980](366d980)) * **ssa:** Do not inline simple recursive functions (noir-lang/noir#8127) ([366d980](366d980)) * **ssa:** Do not unroll loop with break (noir-lang/noir#8090) ([366d980](366d980)) * **ssa:** Do not use inner else condition when collapsing IfElse based upon the then condition (noir-lang/noir#8040) ([44c1347](44c1347)) * **ssa:** fix possibility to `Field % Field` operaions in Brillig from SSA (noir-lang/noir#8105) ([366d980](366d980)) * **ssa:** Loop range with u1 (noir-lang/noir#8131) ([366d980](366d980)) * update metric name to avoid conflicts ([#13629](#13629)) ([70c58ab](70c58ab)), closes [#13626](#13626) * wasm memory benchmark ([#13573](#13573)) ([9a73c4a](9a73c4a)) * wrapping mul support for u128 (noir-lang/noir#7941) ([366d980](366d980)) ### Miscellaneous * Accept optional test path for emitting integration tests (noir-lang/noir#8062) ([366d980](366d980)) * Add `GITHUB_TOKEN` to more workflow steps (noir-lang/noir#8046) ([44c1347](44c1347)) * add a benchmark for opcodes which need a batchable inversion (noir-lang/noir#8110) ([366d980](366d980)) * add hacky faster bootstrap for bb-centric e2e flow ([#13587](#13587)) ([498d433](498d433)) * address some visibility warnings ([#13728](#13728)) ([35dec90](35dec90)) * **avm:** less codegen for lookups ([#13741](#13741)) ([ec468d9](ec468d9)) * **avm:** move interaction jobs to trace builders ([#13621](#13621)) ([caac1c9](caac1c9)) * bb.js non-inlined web workers ([#13736](#13736)) ([0e604a1](0e604a1)) * **bb:** debugging helpers ([#13584](#13584)) ([0ebb29e](0ebb29e)) * **bb:** Make goblin a proper source module ([#13580](#13580)) ([3048a14](3048a14)) * bespoke export for client native prover / PXE server store lazy load ([#13783](#13783)) ([640dd08](640dd08)) * Blob and archiver syncing improvements ([#13542](#13542)) ([629aa2a](629aa2a)), closes [#13530](#13530) * blob archive client factory code ([#13648](#13648)) ([7b16791](7b16791)) * bug list ([#13773](#13773)) ([c6d4fb8](c6d4fb8)) * bump axois ([#13453](#13453)) ([1c20920](1c20920)) * bump bb to 0.84.0 (noir-lang/noir#8047) ([44c1347](44c1347)) * bump bignum timeout (noir-lang/noir#8080) ([366d980](366d980)) * bump external pinned commits (noir-lang/noir#8045) ([44c1347](44c1347)) * **ci:** run non dependent bootstrap build steps in parallel ([#13454](#13454)) ([b17e18d](b17e18d)) * cleanup aztec up amm test ([#13754](#13754)) ([3d92afe](3d92afe)) * Cleanup scripts in package jsons in yarn-project ([#13527](#13527)) ([a296945](a296945)) * **contracts:** core/staking -> core/slashing ([#13748](#13748)) ([5d93a0e](5d93a0e)) * create module for array handling in acirgen (noir-lang/noir#8119) ([366d980](366d980)) * dashboards use ${data_source} variable ([#13613](#13613)) ([45533d9](45533d9)) * delete honk_recursion for building ACIR ([#13664](#13664)) ([ac95729](ac95729)) * delete Ultra Vanilla CIVC ([#13669](#13669)) ([ae578a2](ae578a2)) * delete zeromorph ([#13667](#13667)) ([c8acae0](c8acae0)) * Disable blobscan by default ([#13742](#13742)) ([c55088e](c55088e)) * **docs:** `aztec` and `aztec-wallet` cli reference updates ([#13692](#13692)) ([d11d154](d11d154)) * **docs:** add 0.85.0 docs ([#13578](#13578)) ([cf07358](cf07358)) * **docs:** add AND/XOR bug to bug list ([#13784](#13784)) ([797ae6d](797ae6d)) * **docs:** Add architecture docs (noir-lang/noir#7992) ([366d980](366d980)) * **docs:** adding redirects for node guide ([#13768](#13768)) ([e96e5bf](e96e5bf)) * **docs:** bugfix + deploy on master ([#13717](#13717)) ([010975a](010975a)) * **docs:** Fix some stuff on fees, rm confusing storage example ([#13501](#13501)) ([c00b20b](c00b20b)) * **docs:** Sequencer and Prover Guide ([#13433](#13433)) ([55b9a2b](55b9a2b)) * **docs:** update bb commands to match 0.84.0 (noir-lang/noir#8050) ([366d980](366d980)) * **docs:** Update docs bootrap to to include release ([#13615](#13615)) ([2154d5e](2154d5e)) * don't use `set_from_value_id` in `remove_if_else` (noir-lang/noir#8070) ([366d980](366d980)) * don't use `set_value_from_id` in `as_slice_length` (noir-lang/noir#8039) ([44c1347](44c1347)) * don't use `set_value_from_id` in `constant_folding` (noir-lang/noir#8091) ([366d980](366d980)) * don't use `set_value_from_id` in `loop_invariant` (noir-lang/noir#8085) ([366d980](366d980)) * don't use `set_value_from_id` in `remove_bit_shifts` (noir-lang/noir#8071) ([366d980](366d980)) * don't use `set_value_from_id` in `simplify_cfg` (noir-lang/noir#8072) ([366d980](366d980)) * **experimental:** Function::simple_optimization for SSA optimizations (noir-lang/noir#8102) ([366d980](366d980)) * Fetch rollup address using version as index ([#13620](#13620)) ([60e73f9](60e73f9)) * Fix license files ([#13695](#13695)) ([9931fb8](9931fb8)) * mempool limit ([#13735](#13735)) ([def1287](def1287)) * mint block rewards for 200K blocks at deployment ([#13537](#13537)) ([1a3a326](1a3a326)) * move check_circuit functionality from `TranslatorCircuitBuilder` into a `TranslatorCircuitChecker` ([#13761](#13761)) ([e4e7fca](e4e7fca)) * noir test flake addition ([#13663](#13663)) ([c302fdd](c302fdd)) * **noir-contracts:** update readme ([#13563](#13563)) ([42dfbbf](42dfbbf)) * **optimization:** Enable experimental ownership clone scheme by default (noir-lang/noir#8097) ([366d980](366d980)) * parse nop in SSA parser (noir-lang/noir#8141) ([366d980](366d980)) * ping luke instead of cody on bb benchmark regressions ([#13718](#13718)) ([2802f5a](2802f5a)) * playground improvements ([#13588](#13588)) ([4c3453b](4c3453b)) * **playground:** bump vite ([#13750](#13750)) ([7e72420](7e72420)) * Print `unsafe { ... }` around calls to Brillig from ACIR in AST (noir-lang/noir#8077) ([366d980](366d980)) * **public/avm:** from hints to the end of the world ([#13459](#13459)) ([a89de5d](a89de5d)) * redo typo PR by dizer-ti ([#13757](#13757)) ([075d3a8](075d3a8)) * release playground on s3. ([#13582](#13582)) ([2f9458a](2f9458a)) * **release:** give aztec release image sensible default entrypoint ([#13517](#13517)) ([a864c06](a864c06)) * remove circuit simulator ([#13689](#13689)) ([a00566c](a00566c)) * Remove code of the fake AVM recursive verifier ([#13614](#13614)) ([048dfed](048dfed)) * remove msm sorter ([#13668](#13668)) ([ff29d86](ff29d86)) * remove old terraform configs ([#13716](#13716)) ([49ac1db](49ac1db)), closes [#13651](#13651) * remove omit param from serialize derivation ([#13703](#13703)) ([6af5943](6af5943)) * remove pcs vk from vk ([#13638](#13638)) ([0e941ef](0e941ef)) * remove try_merge_only_changed_indices (noir-lang/noir#8142) ([366d980](366d980)) * replace relative paths to noir-protocol-circuits ([78c87b5](78c87b5)) * replace relative paths to noir-protocol-circuits ([4e53cd1](4e53cd1)) * replace relative paths to noir-protocol-circuits ([3a33c47](3a33c47)) * replace relative paths to noir-protocol-circuits ([eaaa85b](eaaa85b)) * replace relative paths to noir-protocol-circuits ([648a4fe](648a4fe)) * replace relative paths to noir-protocol-circuits ([b3f4745](b3f4745)) * replace relative paths to noir-protocol-circuits ([269b316](269b316)) * replace relative paths to noir-protocol-circuits ([1330efe](1330efe)) * replace relative paths to noir-protocol-circuits ([a739284](a739284)) * Sanity check block number from archiver before returning it ([#13631](#13631)) ([e459b2a](e459b2a)) * simpler `make_mutable` in `array_set` optimization (noir-lang/noir#8106) ([366d980](366d980)) * **spartan:** bump default kind resources ([#13747](#13747)) ([8ca828f](8ca828f)) * **ssa:** Additional unrolling and mem2reg passes (noir-lang/noir#8017) ([44c1347](44c1347)) * **ssa:** Remove IfElse pass basic SSA tests (noir-lang/noir#8058) ([44c1347](44c1347)) * **ssa:** Test terminator value constant folding and resolve cache for data bus (noir-lang/noir#8132) ([366d980](366d980)) * starknet feature flag ([#13681](#13681)) ([2b6c627](2b6c627)) * stop prover node swallowing start prover job errors ([#13676](#13676)) ([90c2b7b](90c2b7b)) * **test:** AST generation calibration test (noir-lang/noir#8054) ([44c1347](44c1347)) * update ACVM doc (noir-lang/noir#8004) ([366d980](366d980)) * Update docs snippet ([#13739](#13739)) ([7fb333a](7fb333a)) * update staking asset handler address ([#13566](#13566)) ([daa09f2](daa09f2)) * Updated contract addresses for alpha-testnet ([#13585](#13585)) ([9f0ff4a](9f0ff4a)) * Use chain monitor to sync system time in p2p tests ([#13632](#13632)) ([abbad4c](abbad4c)) * use public component key for pairing inputs ([#13705](#13705)) ([467166f](467166f)) * use PublicComponentKeys ([#13686](#13686)) ([68e4b6f](68e4b6f)) * use single extended viem client ([#13715](#13715)) ([cf637dc](cf637dc)) * validate block header hash in circuits ([#13094](#13094)) ([f19c182](f19c182)) * wasm proof verifying with native bb ([#13499](#13499)) ([1ad9249](1ad9249)) ### Documentation * fees tutorial ([#13357](#13357)) ([c580657](c580657)) * move snippets all versions ([#13650](#13650)) ([a2f5553](a2f5553)) * Update glossary & snippets ([#13661](#13661)) ([d55816d](d55816d)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). --------- Co-authored-by: AztecBot <tech@aztecprotocol.com>

feat: skip inverting field elements with values +-1

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TomAFrench requested a review from kashbrti April 14, 2025 10:00

TomAFrench added the bench-show Display benchmark results on PR label Apr 14, 2025

TomAFrench changed the title ~~feat: skip inverting field elements with values +-1~~ feat: skip inverting field elements with values +-1 in ACVM Apr 14, 2025

kashbrti approved these changes Apr 14, 2025

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Merged via the queue into master with commit 46002a2 Apr 14, 2025
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TomAFrench deleted the tf/quick-invert branch April 14, 2025 10:32

noirwhal mentioned this pull request Apr 14, 2025

chore: Release Noir(1.0.0-beta.5) #7955

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AztecBot mentioned this pull request Apr 15, 2025

chore: Bump Noir reference AztecProtocol/aztec-packages#13554

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AztecBot mentioned this pull request Apr 15, 2025

chore(master): release 0.86.0 AztecProtocol/aztec-packages#13579

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feat: skip inverting field elements with values +-1 in ACVM#8049

feat: skip inverting field elements with values +-1 in ACVM#8049
TomAFrench merged 1 commit intomasterfrom
tf/quick-invert

TomAFrench commented Apr 14, 2025

Uh oh!

kashbrti commented Apr 14, 2025

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Rumata888 commented Apr 14, 2025

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TomAFrench commented Apr 14, 2025

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kashbrti commented Apr 14, 2025

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