[CodeGen] Change MachineInstr::isConstantValuePHI to return Register. NFC. #22659

	name: "Check for private emails used in PRs"

	on:
	pull_request:
	types:
	- opened

	permissions:
	contents: read

	jobs:
	validate_email:
	runs-on: ubuntu-latest
	if: github.repository == 'llvm/llvm-project'
	steps:
	- name: Fetch LLVM sources
	uses: actions/checkout@v4
	with:
	ref: ${{ github.event.pull_request.head.sha }}

	- name: Extract author email
	id: author
	run: \|
	git log -1
	echo "EMAIL=$(git show -s --format='%ae' HEAD~0)" >> $GITHUB_OUTPUT
	# Create empty comment file
	echo "[]" > comments

	- name: Validate author email
	if: ${{ endsWith(steps.author.outputs.EMAIL, 'noreply.github.com') }}
	env:
	COMMENT: >-
	⚠️ We detected that you are using a GitHub private e-mail address to contribute to the repo.<br/>
	Please turn off [Keep my email addresses private](https://github.com/settings/emails) setting in your account.<br/>
	See [LLVM Discourse](https://discourse.llvm.org/t/hidden-emails-on-github-should-we-do-something-about-it) for more information.
	run: \|
	cat << EOF > comments
	[{"body" : "$COMMENT"}]
	EOF

	- uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 #v4.3.0
	if: always()
	with:
	name: workflow-args
	path: \|
	comments

Provide feedback