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{-# LANGUAGE TemplateHaskell #-}
module T16104_Plugin (plugin) where
import GHC.Plugins
import Data.Bits
import System.IO
plugin :: Plugin
plugin = defaultPlugin {installCoreToDos = install}
where install _ todos = return (test : todos)
test = CoreDoPluginPass "Test" check
check :: ModGuts -> CoreM ModGuts
check m = do mbN <- thNameToGhcName 'complement
case mbN of
Just _ -> do
liftIO $ putStrLn "Found complement!"
-- TODO: Remove #20791
liftIO $ hFlush stdout
Nothing -> error "Failed to locate complement"
return m
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