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Passing arrays from memory into brillig adds constraints #4262

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TomAFrench opened this issue Feb 5, 2024 · 0 comments · Fixed by AztecProtocol/aztec-packages#4460
Closed

Passing arrays from memory into brillig adds constraints #4262

TomAFrench opened this issue Feb 5, 2024 · 0 comments · Fixed by AztecProtocol/aztec-packages#4460

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@TomAFrench
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TomAFrench commented Feb 5, 2024 •
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Copying across from DMs:

The core of the problem is that we've got an array in memory which we want to push across to brillig, however brillig only accepts inputs from the witness map. This means that whenever we want to send this array across the brillig boundary we need to read the entire array from memory (as we could have written to arbitrary indices since the last time we read from memory).

This issue is stemming from the fact that we want to pass values in memory to the brillig VM however the only method we have to do this is by reading every single value out of memory and into the witness map which ends up creating a boatload of constraints.

Originally posted by @TomAFrench in #4244 (comment)
@TomAFrench TomAFrench mentioned this issue Feb 6, 2024
Merged
TomAFrench added a commit to AztecProtocol/aztec-packages that referenced this issue Feb 6, 2024
@TomAFrench
feat: allow brillig to read arrays directly from memory (#4460)
f99392d 
This PR allows the `BrilligSolver` to read inputs directly from ACIR
memory. This allows us to remove constraints which are generated purely
to load values out of memory to pass into ACIR.

Resolves noir-lang/noir#4262
AztecBot pushed a commit to AztecProtocol/barretenberg that referenced this issue Feb 7, 2024
@TomAFrench @AztecBot
feat: allow brillig to read arrays directly from memory (#4460)
a9a7f72 
This PR allows the `BrilligSolver` to read inputs directly from ACIR
memory. This allows us to remove constraints which are generated purely
to load values out of memory to pass into ACIR.

Resolves noir-lang/noir#4262
TomAFrench added a commit to AztecProtocol/aztec-packages that referenced this issue Feb 7, 2024
@TomAFrench
feat: allow brillig to read arrays directly from memory (#4460)
e1cd777 
This PR allows the `BrilligSolver` to read inputs directly from ACIR
memory. This allows us to remove constraints which are generated purely
to load values out of memory to pass into ACIR.

Resolves noir-lang/noir#4262
michaelelliot pushed a commit to Swoir/noir_rs that referenced this issue Feb 28, 2024
@TomAFrench
feat: allow brillig to read arrays directly from memory (AztecProtoco…
51162e6 
…l#4460)

This PR allows the `BrilligSolver` to read inputs directly from ACIR
memory. This allows us to remove constraints which are generated purely
to load values out of memory to pass into ACIR.

Resolves noir-lang/noir#4262
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feat: allow brillig to read arrays directly from memory AztecProtocol/aztec-packages
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