X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fcmm%2FZipCfg.hs;h=f07d2fa56e84b268b2d41ba973369648d9900ee0;hb=4f92da533cd1c7b5f41ef8794ee6a284f1680413;hp=85727a3bb494a973776b9222d90d90b87b37d490;hpb=c886dd30160f26f69336adc7dfc3aab5b89a4dfb;p=ghc-hetmet.git

diff --git a/compiler/cmm/ZipCfg.hs b/compiler/cmm/ZipCfg.hs
index 85727a3..f07d2fa 100644
--- 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