chore: Add benchmarking dashboard

[TomAFrench]

Description

Problem*

Resolves

Summary*

This PR adds a new benchmarking dashboard at https://noir-lang.github.io/noir/dev/bench/. Results will be added to this on each push to master.

We'll still be benchmarking on each PR however comments will only be posted if there's a regression above a certain percentage (currently set to a quite aggressive 10% but we can dial that back if necessary)

I'll turn off the comment systems for metrics other than gate counts in a separate PR.

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.

[github-actions]

Compilation Report

Program	Compilation Time	%
sha256_regression	1.160s	8%
regression_4709	0.837s	-4%
ram_blowup_regression	16.600s	1%
rollup-root	3.922s	8%
rollup-merge	2.164s	8%
rollup-block-root-single-tx	143.000s	0%
rollup-block-root-empty	2.016s	-6%
rollup-block-root	137.000s	-2%
rollup-block-merge	3.488s	-5%
rollup-base-public	27.840s	-1%
rollup-base-private	10.100s	-3%
private-kernel-tail	1.051s	1%
private-kernel-reset	6.126s	2%
private-kernel-inner	2.174s	2%

[github-actions]

Execution Report

Program	Execution Time	%
sha256_regression	0.051s	-2%
regression_4709	0.001s	0%
ram_blowup_regression	0.611s	1%
rollup-root	0.105s	0%
rollup-merge	0.006s	0%
rollup-block-root	37.000s	1%
rollup-block-merge	0.104s	0%
rollup-base-public	1.230s	-1%
rollup-base-private	0.449s	-1%
private-kernel-tail	0.019s	-6%
private-kernel-reset	0.314s	-2%
private-kernel-inner	0.068s	-6%

[github-actions]

Execution Memory Report

Program	Peak Memory	%
keccak256	74.630	100%
workspace	123.640	100%
regression_4709	315.930	100%
ram_blowup_regression	512.570	100%
rollup-root	498.200	100%
rollup-merge	472.940	100%
rollup-block-root	1220.000	100%
rollup-block-merge	498.210	100%
rollup-base-public	734.090	100%
rollup-base-private	590.400	100%
private-kernel-tail	180.820	100%
private-kernel-reset	245.440	100%
private-kernel-inner	208.840	100%

[github-actions]

Compilation Memory Report

Program	Peak Memory	%
keccak256	77.560	100%
workspace	123.850	100%
regression_4709	424.070	100%
ram_blowup_regression	1460.000	100%
rollup-root	601.170	100%
rollup-merge	494.140	100%
rollup-block-root-single-tx	16060.000	100%
rollup-block-root-empty	488.320	100%
rollup-block-root	16070.000	100%
rollup-block-merge	601.160	100%
rollup-base-public	2380.000	100%
rollup-base-private	1140.000	100%
private-kernel-tail	207.340	100%
private-kernel-reset	584.400	100%
private-kernel-inner	294.600	100%

[github-actions]

⚠️ Performance Alert ⚠️

Possible performance regression was detected for benchmark 'Compilation Time'.
Benchmark result of this commit is worse than the previous benchmark result exceeding threshold 1.10.

Benchmark suite	Current: 79f1d8e	Previous: 1fb25cd	Ratio
sha256_regression	1.16 s	1.01 s	1.15

This comment was automatically generated by workflow using github-action-benchmark.

CC: @TomAFrench

[vezenovm]

For a follow-up it would be nice to have separate pages for our memory/execution memory and compilation/execution timing reports. The dashboard is a bit long with all of our reports. I haven't looked into github-action-benchmark deeply though as to whether this is possible.

[TomAFrench]

Yeah, I agree that it's not the prettiest but I don't want to invest too much time into it as I'm planning to migrate to Charlie's tool once it's ready.

[github-actions]

Changes to number of Brillig opcodes executed

Generated at commit: 7ac4bbe0ed1ae5af7ac1e886f4118136b9964231, compared to commit: ed12ad751336e726436b4fa7aad6958497e96285

🧾 Summary (10% most significant diffs)

Program	Brillig opcodes (+/-)	%
higher_order_functions_inliner_min	-165 ✅	-5.86%
higher_order_functions_inliner_zero	-90 ✅	-6.79%

---

Full diff report 👇

Program	Brillig opcodes (+/-)	%
slices_inliner_min	4,549 (-75)	-1.62%
higher_order_functions_inliner_min	2,651 (-165)	-5.86%
higher_order_functions_inliner_zero	1,236 (-90)	-6.79%

[github-actions]

Changes to Brillig bytecode sizes

Generated at commit: 7ac4bbe0ed1ae5af7ac1e886f4118136b9964231, compared to commit: ed12ad751336e726436b4fa7aad6958497e96285

🧾 Summary (10% most significant diffs)

Program	Brillig opcodes (+/-)	%
higher_order_functions_inliner_zero	+26 ❌	+3.90%
slices_inliner_min	-18 ✅	-0.68%

---

Full diff report 👇

Program	Brillig opcodes (+/-)	%
higher_order_functions_inliner_zero	692 (+26)	+3.90%
higher_order_functions_inliner_min	1,448 (+4)	+0.28%
slices_inliner_min	2,615 (-18)	-0.68%