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Merged
chrisdone-artificial merged 1 commit into from
Oct 11, 2025
Merged

Add more stats about infer pipeline #105

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42 changes: 28 additions & 14 deletions src/Hell.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -131,7 +131,7 @@ data Command
| Check FilePath StatsEnabled
| Version

data StatsEnabled = NoStats | PrintStats
data StatsEnabled = NoStats | PrintStats Int

-- | Main entry point.
main :: IO ()
Expand All @@ -157,7 +157,7 @@ commandParser =
Options.asum
[ Run <$> Options.strArgument (Options.metavar "FILE" <> Options.help "Run the given .hell file"),
Check <$> Options.strOption (Options.long "check" <> Options.metavar "FILE" <> Options.help "Typecheck the given .hell file") <*>
Options.flag NoStats PrintStats (Options.long "compiler-stats" <> Options.internal),
Options.flag NoStats (PrintStats 0) (Options.long "compiler-stats" <> Options.internal),
Version <$ Options.flag () () (Options.long "version" <> Options.help "Print the version")
]

Expand Down Expand Up @@ -200,8 +200,9 @@ compileFile stats filePath = do
emitStat stats "desugar" (t3-t2)
case lookup "main" dterms of
Nothing -> error "No main declaration!"
Just main' ->
case inferExp mempty main' of
Just main' -> do
inferred <- inferExp (nestStat stats) mempty main'
case inferred of
Left err -> error $ prettyString err
Right uterm -> do
t4 <- getTime
Expand All @@ -221,8 +222,12 @@ compileFile stats filePath = do

emitStat :: StatsEnabled -> Text -> Double -> IO ()
emitStat NoStats _ _ = pure ()
emitStat PrintStats label s =
t_putStrLn $ "stat: " <> label <> " = " <> Text.pack (secs s)
emitStat (PrintStats n0) label s =
t_putStrLn $ Text.replicate (n0*2) " " <> "stat: " <> label <> " = " <> Text.pack (secs s)

nestStat :: StatsEnabled -> StatsEnabled
nestStat NoStats = NoStats
nestStat (PrintStats n) = PrintStats (n+1)

--------------------------------------------------------------------------------
-- Get declarations from the module
Expand Down Expand Up @@ -1372,19 +1377,28 @@ data InferError
-- all eliminated. By the type system, the output contains only
-- determinate types.
inferExp ::
StatsEnabled ->
Map String (UTerm SomeTypeRep) ->
UTerm () ->
Either InferError (UTerm SomeTypeRep)
inferExp _ uterm =
IO (Either InferError (UTerm SomeTypeRep))
inferExp stats _ uterm = do
t0 <- getTime
case elaborate uterm of
Left elabError -> Left $ ElabError elabError
Right (iterm, equalities) ->
Left elabError -> pure $ Left $ ElabError elabError
Right (iterm, equalities) -> do
t1 <- getTime
emitStat stats "elaborate" (t1-t0)
case unify equalities of
Left unifyError -> Left $ UnifyError unifyError
Right subs ->
Left unifyError -> pure $ Left $ UnifyError unifyError
Right subs -> do
t2 <- getTime
emitStat stats "unify" (t2-t1)
case traverse (zonkToStarType subs) iterm of
Left zonkError -> Left $ ZonkError $ zonkError
Right sterm -> pure sterm
Left zonkError -> pure $ Left $ ZonkError $ zonkError
Right !sterm -> do
t3 <- getTime
emitStat stats "zonk" (t3-t2)
pure $ Right sterm

-- | Zonk a type and then convert it to a type: t :: *
zonkToStarType :: Map IMetaVar (IRep IMetaVar) -> IRep IMetaVar -> Either ZonkError SomeTypeRep
Expand Down