constructed product result}
\begin{code}
+#ifndef OLD_STRICTNESS
+module CprAnalyse ( ) where
+
+#else
+
module CprAnalyse ( cprAnalyse ) where
#include "HsVersions.h"
-import CmdLineOpts ( DynFlags, DynFlag(..), dopt )
+import CmdLineOpts ( DynFlags, DynFlag(..) )
import CoreLint ( showPass, endPass )
import CoreSyn
import CoreUtils ( exprIsValue )
-- we could use appropriate Tuple Vals
deriving (Eq,Show)
-isFun :: AbsVal -> Bool
-isFun (Fun _) = True
-isFun _ = False
-
-- For pretty debugging
instance Outputable AbsVal where
ppr Top = ptext SLIT("Top")
cprAnalCaseAlts :: CPREnv -> [CoreAlt] -> ([CoreAlt], AbsVal)
cprAnalCaseAlts rho alts
- = foldl anal_alt ([], Bot) alts
+ = foldr anal_alt ([], Bot) alts
where
- anal_alt :: ([CoreAlt], AbsVal) -> CoreAlt -> ([CoreAlt], AbsVal)
- anal_alt (done, aval) (con, binds, exp)
- = (done ++ [(con,binds,exp_cpr)], aval `lub` exp_aval)
+ anal_alt :: CoreAlt -> ([CoreAlt], AbsVal) -> ([CoreAlt], AbsVal)
+ anal_alt (con, binds, exp) (done, aval)
+ = ((con,binds,exp_cpr) : done, exp_aval `lub` aval)
where (exp_cpr, exp_aval) = cprAnalExpr rho' exp
rho' = rho `extendVarEnvList` (zip binds (repeat Top))
arity = idArity v
-- Imported (non-nullary) constructors will have the CPR property
-- in their IdInfo, so no need to look at their unfolding
+#endif /* OLD_STRICTNESS */
\end{code}