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|
-- | LLVM config cache
module GHC.Driver.LlvmConfigCache
( LlvmConfigCache
, initLlvmConfigCache
, readLlvmConfigCache
)
where
import GHC.Prelude
import GHC.CmmToLlvm.Config
import System.IO.Unsafe
-- | Cache LLVM configuration read from files in top_dir
--
-- See Note [LLVM configuration] in GHC.CmmToLlvm.Config
--
-- Currently implemented with unsafe lazy IO. But it could be implemented with
-- an IORef as the exposed interface is in IO.
data LlvmConfigCache = LlvmConfigCache LlvmConfig
initLlvmConfigCache :: FilePath -> IO LlvmConfigCache
initLlvmConfigCache top_dir = pure $ LlvmConfigCache (unsafePerformIO $ initLlvmConfig top_dir)
readLlvmConfigCache :: LlvmConfigCache -> IO LlvmConfig
readLlvmConfigCache (LlvmConfigCache !config) = pure config
|
