Bench

ci: use dawidd6/action-download-artifact for benching #17

	name: Bench

	on:
	pull_request:
	branches: [ main ]
	push:
	branches: [ main ]

	env:
	RUST_NIGHTLY_TOOLCHAIN: nightly-2024-03-24
	RUSTFLAGS: -C target-cpu=native -Zexport-executable-symbols -Zshare-generics=y -Zthreads=0

	jobs:
	export:
	if: github.event_name == 'push' && github.ref == 'refs/heads/main'

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- name: Install cargo-export
	uses: taiki-e/install-action@v2
	with:
	tool: cargo-export

	- uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ env.RUST_NIGHTLY_TOOLCHAIN }}

	- uses: Swatinem/rust-cache@v2

	- name: Run cargo export
	run: cargo export target/benchmarks -- bench --bench=side_by_side

	- name: Upload Artifact
	uses: actions/upload-artifact@v4
	with:
	name: bench_side_by_side-${{ github.sha }}
	path: target/benchmarks

	compare:
	if: github.event_name == 'pull_request' && github.base_ref == 'main'
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	# download artifact from previous job
	- name: Download Artifact
	uses: dawidd6/action-download-artifact@v3
	with:
	commit: ${{ github.event.pull_request.base.sha }}
	name: bench_side_by_side-${{ github.event.pull_request.base.sha }}
	path: /tmp/bench/side_by_side

	- uses: dtolnay/rust-toolchain@master
	with:
	toolchain: ${{ env.RUST_NIGHTLY_TOOLCHAIN }}

	- uses: Swatinem/rust-cache@v2

	- name: get tree of /tmp/bench
	run: tree /tmp/bench

	- name: Run cargo bench
	run: cargo bench --bench=side_by_side -- compare /tmp/bench/side_by_side-${{ github.event.pull_request.base.sha }}

	- name: remove /tmp/bench
	run: rm -rf /tmp/bench

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