Don't import FastString in HsVersions.h

[ghc-hetmet.git] / compiler / cmm / ZipCfg.hs

diff --git a/compiler/cmm/ZipCfg.hs b/compiler/cmm/ZipCfg.hs
index 85727a3..f07d2fa 100644 (file)
--- a/compiler/cmm/ZipCfg.hs
+++ b/compiler/cmm/ZipCfg.hs
@@ -688,6 +688,9 @@ mkBlockSet = mkUniqSet
 instance (Outputable m, Outputable l) => Outputable (ZTail m l) where
     ppr = pprTail
 
+instance (Outputable m, Outputable l, LastNode l) => Outputable (LGraph m l) where
+    ppr = pprLgraph
+
 pprTail :: (Outputable m, Outputable l) => ZTail m l -> SDoc 
 pprTail (ZTail m t) = ppr m $$ ppr t
 pprTail (ZLast LastExit) = text "<exit>"
@@ -704,5 +707,3 @@ pprGraph (Graph tail blockenv) =
     where pprBlock (Block id tail) = ppr id <> colon $$ ppr tail
           blocks = postorder_dfs_from blockenv tail
 
-_unused :: FS.FastString
-_unused = undefined