Fix for unregisterised compilation: isStrangeTypeGlobal CCCS = True

Needed by #5357

compiler/cmm/PprC.hs

@@ -757,12 +757,14 @@ isStrangeTypeReg (CmmLocal _)   = False
 isStrangeTypeReg (CmmGlobal g)  = isStrangeTypeGlobal g
 
 isStrangeTypeGlobal :: GlobalReg -> Bool
+isStrangeTypeGlobal CCCS                = True
 isStrangeTypeGlobal CurrentTSO          = True
 isStrangeTypeGlobal CurrentNursery      = True
 isStrangeTypeGlobal BaseReg             = True
 isStrangeTypeGlobal r                   = isFixedPtrGlobalReg r
 
 strangeRegType :: CmmReg -> Maybe SDoc
+strangeRegType (CmmGlobal CCCS) = Just (ptext (sLit "struct CostCentreStack_ *"))
 strangeRegType (CmmGlobal CurrentTSO) = Just (ptext (sLit "struct StgTSO_ *"))
 strangeRegType (CmmGlobal CurrentNursery) = Just (ptext (sLit "struct bdescr_ *"))
 strangeRegType (CmmGlobal BaseReg) = Just (ptext (sLit "struct StgRegTable_ *"))