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Use unsafeDupableInterleaveIO in UniqSupply
[ghc-hetmet.git]
/
compiler
/
basicTypes
/
UniqSupply.lhs
diff --git
a/compiler/basicTypes/UniqSupply.lhs
b/compiler/basicTypes/UniqSupply.lhs
index
8dcf595
..
8e3ac96
100644
(file)
--- a/
compiler/basicTypes/UniqSupply.lhs
+++ b/
compiler/basicTypes/UniqSupply.lhs
@@
-28,6
+28,13
@@
import Unique
import GHC.Exts
import System.IO.Unsafe ( unsafeInterleaveIO )
import GHC.Exts
import System.IO.Unsafe ( unsafeInterleaveIO )
+#if __GLASGOW_HASKELL__ >= 607
+import GHC.IOBase (unsafeDupableInterleaveIO)
+#else
+unsafeDupableInterleaveIO :: IO a -> IO a
+unsafeDupableInterleaveIO = unsafeInterleaveIO
+#endif
+
w2i x = word2Int# x
i2w x = int2Word# x
i2w_s x = (x :: Int#)
w2i x = word2Int# x
i2w x = int2Word# x
i2w_s x = (x :: Int#)
@@
-69,7
+76,7
@@
mkSplitUniqSupply (C# c#)
-- This is one of the most hammered bits in the whole compiler
mk_supply#
-- This is one of the most hammered bits in the whole compiler
mk_supply#
- = unsafeInterleaveIO (
+ = unsafeDupableInterleaveIO (
genSymZh >>= \ (I# u#) ->
mk_supply# >>= \ s1 ->
mk_supply# >>= \ s2 ->
genSymZh >>= \ (I# u#) ->
mk_supply# >>= \ s1 ->
mk_supply# >>= \ s2 ->