, ([2], Opt_LiberateCase)
, ([2], Opt_SpecConstr)
- , ([2], Opt_StaticArgumentTransformation)
+
+-- , ([2], Opt_StaticArgumentTransformation)
+-- Max writes: I think it's probably best not to enable SAT with -O2 for the
+-- 6.10 release. The version of SAT in HEAD at the moment doesn't incorporate
+-- several improvements to the heuristics, and I'm concerned that without
+-- those changes SAT will interfere with some attempts to write "high
+-- performance Haskell", as we saw in some posts on Haskell-Cafe earlier
+-- this year. In particular, the version in HEAD lacks the tail call
+-- criterion, so many things that look like reasonable loops will be
+-- turned into functions with extra (unneccesary) thunk creation.
, ([0,1,2], Opt_DoLambdaEtaExpansion)
-- This one is important for a tiresome reason:
------ DPH flags ----------------------------------------------------
, Flag "fdph-seq"
- (NoArg (upd (setDPHBackend DPHSeq)))
+ (NoArg (setDPHBackend DPHSeq))
Supported
, Flag "fdph-par"
- (NoArg (upd (setDPHBackend DPHPar)))
+ (NoArg (setDPHBackend DPHPar))
Supported
------ Compiler flags -----------------------------------------------
-- -fdicts-cheap always inline dictionaries
-- -fmax-simplifier-iterations20 this is necessary sometimes
-- -fno-spec-constr-threshold run SpecConstr even for big loops
+-- -fno-spec-constr-count SpecConstr as much as possible
--
setDPHOpt :: DynFlags -> DynFlags
setDPHOpt dflags = setOptLevel 2 (dflags { maxSimplIterations = 20
, specConstrThreshold = Nothing
+ , specConstrCount = Nothing
})
`dopt_set` Opt_DictsCheap
`dopt_unset` Opt_MethodSharing
data DPHBackend = DPHPar
| DPHSeq
-setDPHBackend :: DPHBackend -> DynFlags -> DynFlags
-setDPHBackend backend dflags = dflags { dphBackend = backend }
-
+setDPHBackend :: DPHBackend -> DynP ()
+setDPHBackend backend
+ = do
+ upd $ \dflags -> dflags { dphBackend = backend }
+ exposePackage $ "dph-prim-" ++ suffix backend
+ exposePackage $ "dph-" ++ suffix backend
+ where
+ suffix DPHPar = "par"
+ suffix DPHSeq = "seq"
setMainIs :: String -> DynP ()
setMainIs arg