check-everything-upstreamed.rb

#! /usr/bin/env ruby

# Verifies that every AVR-specific commit in Github:avr-rust/llvm has been
# upstreamed to LLVM trunk.

Commit = Struct.new(:oid, :message)

def log(arguments = [])
  raw_output = `git log --oneline --no-decorate #{arguments}`

  raw_output.split("\n").map(&:chomp).map do |line|
    parts = line.split(' ')
    oid = parts[0]
    message = parts[1..-1].join(' ')
    Commit.new(oid, message)
  end
end

avr_rust_specific_commits = log('rust/rust-llvm-release-4-0-1..')

def upstream_llvm_master_log
  @master_log ||= log('origin/master')
end

def associated_llvm_proper_commit(commit)
  upstream_llvm_master_log.find { |mc| mc.message == commit.message }
end

avr_rust_specific_commits.each do |commit|
  unless associated_llvm_proper_commit(commit)
    $stderr.puts "commit in avr-rust fork but missing from llvm proper"
    $stderr.puts "=" * 31
    $stderr.puts "#{commit.oid} #{commit.message}"
    $stderr.puts
  end
end