GHA pipeline rewrite for ease and speed #7

	name: Benchmark PR
	on:
	push:
	branches: [main]
	pull_request:
	paths:
	- '.github/workflows/benchmark-auto-pr.yml'
	jobs:
	benchmark:
	permissions:
	pull-requests: write
	contents: read
	id-token: write
	runs-on: ubuntu-latest-8-cores
	strategy:
	matrix:
	runtimes: [centrifuge, altair]
	env:
	RUST_TOOLCHAIN: "1.66.0"
	RUSTC_WRAPPER: "sccache"
	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Prep build on Ubuntu
	uses: ./.github/actions/prep-ubuntu
	with:
	RUST_TOOLCHAIN: ${{ env.RUST_TOOLCHAIN }}
	cache: enabled
	# Cache needs Google credentials:
	GWIP: ${{ secrets.GWIP_SCCACHE }}
	GSA: ${{ secrets.GSA_SCCACHE }}

	# - name: Checkout code
	# uses: actions/checkout@v3
	# with:
	# ref: 'main'

	- name: Run Benchmark ${{ matrix.runtimes }}
	run: ./scripts/runtime_benchmarks.sh ${{ matrix.runtimes }}

	- name: Create PR with new benchmarks
	uses: peter-evans/create-pull-request@v5
	with:
	add-paths: runtime/${{ matrix.runtimes }}/src/weights/
	commit-message: "New benchmark weights generated from main by Github Actions Bot"
	base: main
	branch: benchmarks/
	delete-branch: true

	# - name: Upload artifact
	# uses: actions/upload-artifact@v3
	# with:
	# name: ${{steps.parse-runtime.outputs.result}}-weights
	# path: runtime/${{steps.parse-runtime.outputs.result}}/src/weights/

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