import CmdLineOpts ( opt_D_dump_cse, opt_D_verbose_core2core )
import Id ( Id, idType )
-import CoreUtils ( hashExpr, cheapEqExpr, exprIsBig )
+import CoreUtils ( hashExpr, cheapEqExpr, exprIsBig, mkAltExpr )
import DataCon ( isUnboxedTupleCon )
import Type ( splitTyConApp_maybe )
import CoreSyn