Add dead code detection #2193

	name: Benchmark Go code

	on:
	pull_request:
	branches:
	- main

	permissions:
	pull-requests: write

	jobs:
	benchmark:
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
	with:
	show-progress: false

	- name: Set up Go
	uses: actions/setup-go@41dfa10bad2bb2ae585af6ee5bb4d7d973ad74ed # v5.1.0
	with:
	go-version-file: go.ver
	cache: false

	- name: Fetch test rules
	run: make -C cmd/pint/bench fetch

	- name: Benchmark PR branch
	run: \|
	make benchmark \| tee new.txt

	- name: Benchmark main branch
	run: \|
	git fetch origin main
	git reset --hard FETCH_HEAD
	make benchmark \| tee old.txt

	- name: Diff benchmarks
	run: \|
	git reset --hard ${GITHUB_SHA}
	make benchmark-diff

	- name: Report
	if: ${{ github.event.pull_request.head.repo.full_name == 'cloudflare/pint' }}
	uses: thollander/actions-comment-pull-request@e2c37e53a7d2227b61585343765f73a9ca57eda9 # v3.0.0
	with:
	file-path: benchstat.txt
	comment-tag: benchstat

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