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feat: allow bitshifts to be represented in SSA for brillig #4301

Merged
merged 3 commits into from
Feb 8, 2024
Merged

feat: allow bitshifts to be represented in SSA for brillig #4301

merged 3 commits into from
Feb 8, 2024

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TomAFrench
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Description

Problem*

Resolves #4276

Summary*

Quick and dirty implementation of replacing bitshifts in SSA once function inlining has occurred. Not a fan of how we are juggling the instructions but will need to think about how to do this cleanly.

cc @sirasistant

Additional Context

Documentation*

Check one:

  • No documentation needed.
  • Documentation included in this PR.
  • [Exceptional Case] 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.

@TomAFrench
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Ah looks like I need to move the pass to be after flatten_cfg

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github-actions bot commented Feb 8, 2024 •
edited

Changes to circuit sizes

Generated at commit: d25f811406532ad06b3d5536fc9f2331b3f2d6b9, compared to commit: ba25a974117e2607085a42c874437e111fc4f221

🧾 Summary (10% most significant diffs)

Program ACIR opcodes (+/-) % Circuit size (+/-) %
simple_shift_left_right 0 ➖ 0.00% -174 ✅ -5.52%
sha2_byte -5,972 ✅ -15.05% -12,372 ✅ -8.07%
Full diff report 👇
Program ACIR opcodes (+/-) % Circuit size (+/-) %
bit_shifts_runtime 2,802 (+10) +0.36% 5,866 (+22) +0.38%
simple_shift_left_right 14 (0) 0.00% 2,981 (-174) -5.52%
sha2_byte 33,709 (-5,972) -15.05% 140,933 (-12,372) -8.07%

@sirasistant
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I think it failed after inlining because the pass only works on one block! Would it be better for it to support multiple blocks and do it after inlining? I'm not sure if any of the passes in between would help at all so maybe not.

@sirasistant
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But yeah in general this would be precisely the idea :D ! Do we want to regenerate the whole instructions array and replace it or insert surgically the new instructions by managing an index to where we want to insert them?

@TomAFrench TomAFrench force-pushed the tf/keep-bitshifts-in-brillig-acir branch from 8214f14 to eff2d9f Compare February 8, 2024 16:30
@TomAFrench TomAFrench marked this pull request as ready for review February 8, 2024 16:48
@TomAFrench
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Let's get this in to unblock syncing with aztec-packages. We can refactor this later.

sirasistant
sirasistant approved these changes Feb 8, 2024
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Let's merge to unblock aztec-packages and we can refine later

@sirasistant sirasistant added this pull request to the merge queue Feb 8, 2024
@github-merge-queue github-merge-queue bot removed this pull request from the merge queue due to failed status checks Feb 8, 2024
@TomAFrench TomAFrench added this pull request to the merge queue Feb 8, 2024
Merged via the queue into master with commit d86ff1a Feb 8, 2024
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@TomAFrench TomAFrench deleted the tf/keep-bitshifts-in-brillig-acir branch February 8, 2024 17:41
@kevaundray kevaundray mentioned this pull request Feb 8, 2024
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@TomAFrench TomAFrench mentioned this pull request Feb 9, 2024
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github-merge-queue bot pushed a commit that referenced this pull request Feb 12, 2024
@kevaundray
chore: Release Noir(0.24.0) (#4113)
df04ce9 
🤖 I have created a release *beep* *boop*
---


<details><summary>0.24.0</summary>

## [0.24.0](v0.23.0...v0.24.0)
(2024-02-12)


### ⚠ BREAKING CHANGES

* rename bigint_neg into bigint_sub
(AztecProtocol/aztec-packages#4420)
* Add expression width into acir
(AztecProtocol/aztec-packages#4014)
* init storage macro
(AztecProtocol/aztec-packages#4200)
* **acir:** Move `is_recursive` flag to be part of the circuit
definition (AztecProtocol/aztec-packages#4221)
* Sync commits from `aztec-packages`
([#4144](#4144))

### Features

* Add bit size to const opcode
(AztecProtocol/aztec-packages#4385)
([158c8ce](158c8ce))
* Add brillig array index check
([#4127](#4127))
([c29f85f](c29f85f))
* Add definitions for From and Into traits to Noir prelude
([#4169](#4169))
([4421ce4](4421ce4))
* Add expression width into acir
(AztecProtocol/aztec-packages#4014)
([158c8ce](158c8ce))
* Add instrumentation for tracking variables in debugging
([#4122](#4122))
([c58d691](c58d691))
* Add option to print monomorphized program
([#4119](#4119))
([80f7e29](80f7e29))
* Add support for overriding expression width
([#4117](#4117))
([c8026d5](c8026d5))
* Add warnings for usage of restricted bit sizes
([#4234](#4234))
([0ffc38b](0ffc38b))
* Allow bitshifts to be represented in SSA for brillig
([#4301](#4301))
([d86ff1a](d86ff1a))
* Allow brillig to read arrays directly from memory
(AztecProtocol/aztec-packages#4460)
([158c8ce](158c8ce))
* Allow globals to refer to any expression
([#4293](#4293))
([479330e](479330e))
* Allow nested arrays and vectors in Brillig foreign calls
(AztecProtocol/aztec-packages#4478)
([158c8ce](158c8ce))
* Allow variables and stack trace inspection in the debugger
([#4184](#4184))
([bf263fc](bf263fc))
* **avm:** Back in avm context with macro - refactor context
(AztecProtocol/aztec-packages#4438)
([158c8ce](158c8ce))
* **aztec-nr:** Initial work for aztec public vm macro
(AztecProtocol/aztec-packages#4400)
([158c8ce](158c8ce))
* Deallocate stack items at the instruction level
([#4339](#4339))
([8f024a8](8f024a8))
* Disable constraint bubbling pass
([#4131](#4131))
([9ba2de6](9ba2de6))
* Disable unused variable checks on low-level and oracle functions
([#4179](#4179))
([8f70e57](8f70e57))
* Evaluation of dynamic assert messages
([#4101](#4101))
([c284e01](c284e01))
* Improve Error Handling for Cargo in Bootstrap Script
([#4211](#4211))
([3a90849](3a90849))
* Init storage macro
(AztecProtocol/aztec-packages#4200)
([158c8ce](158c8ce))
* **lsp:** Goto type reference for Struct
([#4091](#4091))
([d56cac2](d56cac2))
* Move bounded_vec into the noir stdlib
([#4197](#4197))
([c50621f](c50621f))
* Multiply first to allow more ACIR gen optimizations
([#4201](#4201))
([882639d](882639d))
* Option expect method
([#4219](#4219))
([8e042f2](8e042f2))
* Perform constraints on uncasted values if they are the same type
([#4303](#4303))
([816fa85](816fa85))
* Remove predicate from `sort` intrinsic function
([#4228](#4228))
([d646243](d646243))
* Remove replacement of boolean range opcodes with `AssertZero` opcodes
([#4107](#4107))
([dac0e87](dac0e87))
* Replace bitwise ANDs used for truncation with `Instruction::Truncate`
([#4327](#4327))
([eb67ff6](eb67ff6))
* Replace modulo operations with truncations where possible
([#4329](#4329))
([70f2435](70f2435))
* Separate compilation and expression narrowing in `nargo` interface
([#4100](#4100))
([62a4e37](62a4e37))
* Simplify all unsigned constant NOT instructions
([#4230](#4230))
([fab4a6e](fab4a6e))
* Sync commits from `aztec-packages`
([#4144](#4144))
([0205d3b](0205d3b))
* Use constraint information to perform constant folding
([#4060](#4060))
([9a4bf16](9a4bf16))


### Bug Fixes

* Accurate tracking of slice capacities across blocks
([#4240](#4240))
([7420dbb](7420dbb))
* Allow function calls in global definitions
([#4320](#4320))
([0dc205c](0dc205c))
* Allow performing bitwise NOT on unsigned integers
([#4229](#4229))
([b3ddf10](b3ddf10))
* Apply generic arguments from trait constraints before instantiating
identifiers ([#4121](#4121))
([eb6fc0f](eb6fc0f))
* Apply range constraints to return values from unconstrained functions
([#4217](#4217))
([3af2a89](3af2a89))
* Apply trait constraints from method calls
([#4152](#4152))
([68c5486](68c5486))
* Better errors for missing `fn` keyword
([#4154](#4154))
([057c208](057c208))
* Check for tests in all packages before failing due to an unsatisfied
test filter ([#4114](#4114))
([1107373](1107373))
* Clean error when attemping to return a slice from Brillig to ACIR
([#4280](#4280))
([bcad4ec](bcad4ec))
* Correct result when assigning shared arrays in unconstrained code
([#4210](#4210))
([bdd8a96](bdd8a96))
* **docs:** Codegen docs before cutting a new version
([#4183](#4183))
([2914310](2914310))
* Ensure that destination register is allocated when moving between
registers in brillig gen
([#4316](#4316))
([ca0a56e](ca0a56e))
* Ensure that unconstrained entrypoint functions don't generate
constraints ([#4292](#4292))
([fae4ead](fae4ead))
* From field with constant values
([#4226](#4226))
([593916b](593916b))
* **lsp:** Crash when file not in workspace
([#4146](#4146))
([cf7130f](cf7130f))
* **lsp:** Replace panics with errors
([#4209](#4209))
([26e9618](26e9618))
* Maintain correct type when simplifying `x ^ x`
([#4082](#4082))
([9d83c2b](9d83c2b))
* Message formatting for assert statement
([#4323](#4323))
([3972ead](3972ead))
* Prevent debugger crashing on circuits with no opcodes
([#4283](#4283))
([2e32845](2e32845))
* Prevent declarations of blackbox functions outside of the stdlib
([#4177](#4177))
([9fb6b09](9fb6b09))
* Remove panic from `init_log_level` in `acvm_js`
([#4195](#4195))
([2e26530](2e26530))
* Respect order in bubble up for redundant asserts
([#4109](#4109))
([189aa48](189aa48))
* Revert "correct result when assigning shared arrays" and added
regression test ([#4333](#4333))
([05e78b3](05e78b3))
* Save the data bus to the current function before generating others
([#4047](#4047))
([0a5bd4f](0a5bd4f))
* Simplify constant assert messages into `ConstrainError::Static`
([#4287](#4287))
([fd15052](fd15052))
* Ssa typing for array & slice indexes
([#4278](#4278))
([4074bab](4074bab))
* Ssa typing for assign_lvalue_index
([#4289](#4289))
([37f149c](37f149c))
* SSA typing for right shifts
([#4302](#4302))
([41ee1aa](41ee1aa))
* Ssa typing of make_offset
([#4277](#4277))
([e4378ee](e4378ee))
* Track graphs of item dependencies to find dependency cycles
([#4266](#4266))
([61eabf1](61eabf1))
* Type check ACIR mutable reference passed to brillig
([#4281](#4281))
([7e139de](7e139de))
* Update array method type signatures in the docs
([#4178](#4178))
([7c0a955](7c0a955))
* Zero out input to `to_radix` calls if inactive
([#4116](#4116))
([3f5bad3](3f5bad3))


### Miscellaneous Chores

* **acir:** Move `is_recursive` flag to be part of the circuit
definition (AztecProtocol/aztec-packages#4221)
([158c8ce](158c8ce))
* Rename bigint_neg into bigint_sub
(AztecProtocol/aztec-packages#4420)
([158c8ce](158c8ce))
</details>

<details><summary>0.40.0</summary>

## [0.40.0](v0.39.0...v0.40.0)
(2024-02-12)


### ⚠ BREAKING CHANGES

* rename bigint_neg into bigint_sub
(AztecProtocol/aztec-packages#4420)
* Add expression width into acir
(AztecProtocol/aztec-packages#4014)
* init storage macro
(AztecProtocol/aztec-packages#4200)
* **acir:** Move `is_recursive` flag to be part of the circuit
definition (AztecProtocol/aztec-packages#4221)
* Sync commits from `aztec-packages`
([#4144](#4144))
* Breaking changes from aztec-packages
([#3955](#3955))
* Rename Arithmetic opcode to AssertZero
([#3840](#3840))
* Remove unused methods on ACIR opcodes
([#3841](#3841))
* Remove partial backend feature
([#3805](#3805))

### Features

* Add bit size to const opcode
(AztecProtocol/aztec-packages#4385)
([158c8ce](158c8ce))
* Add expression width into acir
(AztecProtocol/aztec-packages#4014)
([158c8ce](158c8ce))
* Add instrumentation for tracking variables in debugging
([#4122](#4122))
([c58d691](c58d691))
* Add support for overriding expression width
([#4117](#4117))
([c8026d5](c8026d5))
* Allow brillig to read arrays directly from memory
(AztecProtocol/aztec-packages#4460)
([158c8ce](158c8ce))
* Allow nested arrays and vectors in Brillig foreign calls
(AztecProtocol/aztec-packages#4478)
([158c8ce](158c8ce))
* Allow variables and stack trace inspection in the debugger
([#4184](#4184))
([bf263fc](bf263fc))
* **avm:** Back in avm context with macro - refactor context
(AztecProtocol/aztec-packages#4438)
([158c8ce](158c8ce))
* **aztec-nr:** Initial work for aztec public vm macro
(AztecProtocol/aztec-packages#4400)
([158c8ce](158c8ce))
* Aztec-packages
([#3754](#3754))
([c043265](c043265))
* Breaking changes from aztec-packages
([#3955](#3955))
([5be049e](5be049e))
* Evaluation of dynamic assert messages
([#4101](#4101))
([c284e01](c284e01))
* Init storage macro
(AztecProtocol/aztec-packages#4200)
([158c8ce](158c8ce))
* Remove range constraints from witnesses which are constrained to be
constants ([#3928](#3928))
([afe9c7a](afe9c7a))
* Remove replacement of boolean range opcodes with `AssertZero` opcodes
([#4107](#4107))
([dac0e87](dac0e87))
* Speed up transformation of debug messages
([#3815](#3815))
([2a8af1e](2a8af1e))
* Sync `aztec-packages`
([#4011](#4011))
([fee2452](fee2452))
* Sync commits from `aztec-packages`
([#4068](#4068))
([7a8f3a3](7a8f3a3))
* Sync commits from `aztec-packages`
([#4144](#4144))
([0205d3b](0205d3b))


### Bug Fixes

* Deserialize odd length hex literals
([#3747](#3747))
([4000fb2](4000fb2))
* Remove panic from `init_log_level` in `acvm_js`
([#4195](#4195))
([2e26530](2e26530))
* Return error rather instead of panicking on invalid circuit
([#3976](#3976))
([67201bf](67201bf))


### Miscellaneous Chores

* **acir:** Move `is_recursive` flag to be part of the circuit
definition (AztecProtocol/aztec-packages#4221)
([158c8ce](158c8ce))
* Remove partial backend feature
([#3805](#3805))
([0383100](0383100))
* Remove unused methods on ACIR opcodes
([#3841](#3841))
([9e5d0e8](9e5d0e8))
* Rename Arithmetic opcode to AssertZero
([#3840](#3840))
([836f171](836f171))
* Rename bigint_neg into bigint_sub
(AztecProtocol/aztec-packages#4420)
([158c8ce](158c8ce))
</details>

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).
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Reintroduce shifts in SSA
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@TomAFrench @sirasistant