bench hash added

[michalkucharczyk]

Adds hashing benchmarks comparing PVM vs native execution, used to decide whether the JAM Parachain Service needs crypto host calls.

Two components added:

• bench-hash guest crate exporting the sp_io::hashing functions (blake2, keccak, sha2, twox) as parameterized benchmark_<algo>(len, times) entry points,
• benchtool bench-hash subcommand that runs them over a size grid on the PVM blob and native libraries, printing raw per-iteration times (process-results.sh turns the CSV into comparison tables).

Along the way this exposed that bench-common.rs's byte-at-a-time memcpy/memset shadow compiler_builtins' weak word-wise versions that real-world guests link. This inflated small-input results by up to 2.4× under sync gas metering (keccak_256 @ 32 B: 1.19 µs → 497 ns). They are now gated behind a per-crate builtins-mem feature (default-on only for bench-hash, so existing benchmark numbers are unaffected).

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	cargo/​proc-macro2@​1.0.69 ⏵ 1.0.107	-1
	cargo/​quote@​1.0.33 ⏵ 1.0.47	-18
	cargo/​libsecp256k1@​0.7.2
	cargo/​blake2b_simd@​1.0.4
	cargo/​ed25519-zebra@​4.2.0
	cargo/​k256@​0.13.4
	cargo/​schnorrkel@​0.11.5
	cargo/​sha3@​0.10.9
	cargo/​twox-hash@​2.1.3

View full report

[michalkucharczyk]

results are here