SimplifierSwitch(..)
)
import SimplMonad
-import SimplUtils ( mkCase, mkLam, newId, prepareAlts,
- simplBinder, simplBinders, simplLamBndrs, simplRecBndrs, simplLetBndr,
+import SimplEnv
+import SimplUtils ( mkCase, mkLam, prepareAlts,
SimplCont(..), DupFlag(..), LetRhsFlag(..),
mkRhsStop, mkBoringStop, pushContArgs,
contResultType, countArgs, contIsDupable, contIsRhsOrArg,
- getContArgs, interestingCallContext, interestingArg, isStrictType
+ getContArgs, interestingCallContext, interestingArg, isStrictType,
+ preInlineUnconditionally, postInlineUnconditionally,
+ inlineMode, activeInline, activeRule
)
import Id ( Id, idType, idInfo, idArity, isDataConWorkId,
setIdUnfolding, isDeadBinder,
import BasicTypes ( isMarkedStrict )
import CostCentre ( currentCCS )
import Type ( TvSubstEnv, isUnLiftedType, seqType, tyConAppArgs, funArgTy,
- splitFunTy_maybe, splitFunTy, coreEqType, substTy, mkTyVarTys
+ splitFunTy_maybe, splitFunTy, coreEqType, mkTyVarTys
)
import VarEnv ( elemVarEnv )
-import Subst ( SubstResult(..), emptySubst, substExpr,
- substId, simplIdInfo )
import TysPrim ( realWorldStatePrimTy )
import PrelInfo ( realWorldPrimId )
import BasicTypes ( TopLevelFlag(..), isTopLevel,
-- so that if a transformation rule has unexpectedly brought
-- anything into scope, then we don't get a complaint about that.
-- It's rather as if the top-level binders were imported.
- simplRecBndrs env (bindersOfBinds binds) `thenSmpl` \ (env, bndrs') ->
+ simplLetBndrs env (bindersOfBinds binds) `thenSmpl` \ (env, bndrs') ->
simpl_binds env binds bndrs' `thenSmpl` \ (floats, _) ->
freeTick SimplifierDone `thenSmpl_`
returnSmpl (floatBinds floats)
simplNonRecBind env bndr rhs rhs_se cont_ty thing_inside
| preInlineUnconditionally env NotTopLevel bndr
= tick (PreInlineUnconditionally bndr) `thenSmpl_`
- thing_inside (extendIdSubst env bndr (ContEx (getSubst rhs_se) rhs))
+ thing_inside (extendIdSubst env bndr (mkContEx rhs_se rhs))
| isStrictDmd (idNewDemandInfo bndr) || isStrictType (idType bndr) -- A strict let
let
-- simplLetBndr doesn't deal with the IdInfo, so we must
-- do so here (c.f. simplLazyBind)
- bndr2 = bndr1 `setIdInfo` simplIdInfo (getSubst env) (idInfo bndr)
+ bndr2 = bndr1 `setIdInfo` simplIdInfo env (idInfo bndr)
env2 = modifyInScope env1 bndr2 bndr2
in
completeNonRecX env2 True {- strict -} bndr bndr2 rhs1 thing_inside
-- Similarly, single occurrences can be inlined vigourously
-- e.g. case (f x, g y) of (a,b) -> ....
-- If a,b occur once we can avoid constructing the let binding for them.
- = thing_inside (extendIdSubst env bndr (ContEx emptySubst new_rhs))
+ = thing_inside (extendIdSubst env bndr (DoneEx new_rhs))
| otherwise
= simplBinder env bndr `thenSmpl` \ (env, bndr') ->
simplRecOrTopPair env top_lvl bndr bndr' rhs
| preInlineUnconditionally env top_lvl bndr -- Check for unconditional inline
= tick (PreInlineUnconditionally bndr) `thenSmpl_`
- returnSmpl (emptyFloats env, extendIdSubst env bndr (ContEx (getSubst env) rhs))
+ returnSmpl (emptyFloats env, extendIdSubst env bndr (mkContEx env rhs))
| otherwise
= simplLazyBind env top_lvl Recursive bndr bndr' rhs env
-- NB 4: does no harm for non-recursive bindings
- bndr2 = bndr1 `setIdInfo` simplIdInfo (getSubst env) (idInfo bndr)
+ bndr2 = bndr1 `setIdInfo` simplIdInfo env (idInfo bndr)
env1 = modifyInScope env bndr2 bndr2
rhs_env = setInScope rhs_se env1
is_top_level = isTopLevel top_lvl
simplExpr :: SimplEnv -> CoreExpr -> SimplM CoreExpr
simplExpr env expr = simplExprC env expr (mkBoringStop expr_ty')
where
- expr_ty' = substTy (getTvSubst env) (exprType expr)
+ expr_ty' = substTy env (exprType expr)
-- The type in the Stop continuation, expr_ty', is usually not used
-- It's only needed when discarding continuations after finding
-- a function that returns bottom.
rebuild env case_expr' cont
where
case_cont = Select NoDup bndr alts env (mkBoringStop case_ty')
- case_ty' = substTy (getTvSubst env) case_ty -- c.f. defn of simplExpr
+ case_ty' = substTy env case_ty -- c.f. defn of simplExpr
simplExprF env (Let (Rec pairs) body) cont
- = simplRecBndrs env (map fst pairs) `thenSmpl` \ (env, bndrs') ->
+ = simplLetBndrs env (map fst pairs) `thenSmpl` \ (env, bndrs') ->
-- NB: bndrs' don't have unfoldings or rules
-- We add them as we go down
simplType env ty
= seqType new_ty `seq` returnSmpl new_ty
where
- new_ty = substTy (getTvSubst env) ty
+ new_ty = substTy env ty
\end{code}
-- But it isn't a common case.
= let
(t1,t2) = splitFunTy t1t2
- new_arg = mkCoerce2 s1 t1 (substExpr subst arg)
- subst = getSubst (setInScope arg_se env)
+ new_arg = mkCoerce2 s1 t1 (substExpr arg_env arg)
+ arg_env = setInScope arg_se env
in
ApplyTo dup new_arg (zapSubstEnv env) (addCoerce t2 s2 cont)
\begin{code}
simplVar env var cont
- = case substId (getSubst env) var of
- DoneEx e -> simplExprF (zapSubstEnv env) e cont
- ContEx se e -> simplExprF (setSubstEnv env se) e cont
- DoneId var1 occ -> completeCall (zapSubstEnv env) var1 occ cont
+ = case substId env var of
+ DoneEx e -> simplExprF (zapSubstEnv env) e cont
+ ContEx tvs ids e -> simplExprF (setSubstEnv env tvs ids) e cont
+ DoneId var1 occ -> completeCall (zapSubstEnv env) var1 occ cont
-- Note [zapSubstEnv]
-- The template is already simplified, so don't re-substitute.
-- This is VITAL. Consider
let
in_scope = getInScope env
+ rules = getRules env
maybe_rule = case activeRule env of
Nothing -> Nothing -- No rules apply
- Just act_fn -> lookupRule act_fn in_scope var args
+ Just act_fn -> lookupRule act_fn in_scope rules var args
in
case maybe_rule of {
Just (rule_name, rule_rhs) ->
simplBinders env tvs `thenSmpl` \ (env1, tvs') ->
let
pat_res_ty = dataConResTy con (mkTyVarTys tvs')
- tv_subst = getTvSubst env1
in
- case coreRefineTys tvs' tv_subst pat_res_ty (idType case_bndr') of {
+ case coreRefineTys tvs' (error "urk") pat_res_ty (idType case_bndr') of {
Nothing -- Dead code; for now, I'm just going to put in an
-- error case so I can see them
-> let rhs' = mkApps (Var eRROR_ID)
- [Type (substTy tv_subst (exprType rhs)),
+ [Type (substTy env (exprType rhs)),
Lit (mkStringLit "Impossible alternative (GADT)")]
in
simplBinders env1 ids `thenSmpl` \ (env2, ids') ->
Just tv_subst_env -> -- The normal case
let
- env2 = setTvSubstEnv env1 tv_subst_env
+ env2 = error "setTvSubstEnv" env1 tv_subst_env
-- Simplify the Ids in the refined environment, so their types
-- reflect the refinement. Usually this doesn't matter, but it helps
-- in mkDupableAlt, when we want to float a lambda that uses these binders
bind_args env bs (drop n_drop_tys args) $ \ env ->
let
con_app = mkConApp dc (take n_drop_tys args ++ con_args)
- con_args = [substExpr (getSubst env) (varToCoreExpr b) | b <- bs]
+ con_args = [substExpr env (varToCoreExpr b) | b <- bs]
-- args are aready OutExprs, but bs are InIds
in
simplNonRecX env bndr con_app $ \ env ->
projects / ghc-hetmet.git / blobdiff