%
-% (c) The AQUA Project, Glasgow University, 1994-1995
+% (c) The AQUA Project, Glasgow University, 1994-1996
%
\section[UniqFM]{Specialised finite maps, for things with @Uniques@}
Based on @FiniteMaps@ (as you would expect).
Basically, the things need to be in class @NamedThing@, and we use the
-@getTheUnique@ method to grab their @Uniques@.
+@getItsUnique@ method to grab their @Uniques@.
(A similar thing to @UniqSet@, as opposed to @Set@.)
-@IdEnv@ and @TyVarEnv@ are the (backward-compatible?) specialisations
-of this stuff for Ids and TyVars, respectively.
-
\begin{code}
#if defined(COMPILING_GHC)
#include "HsVersions.h"
listToUFM,
listToUFM_Directly,
addToUFM,
- IF_NOT_GHC(addListToUFM COMMA)
+ addListToUFM,
addToUFM_Directly,
+ addListToUFM_Directly,
IF_NOT_GHC(addToUFM_C COMMA)
IF_NOT_GHC(addListToUFM_C COMMA)
delFromUFM,
filterUFM,
sizeUFM,
isNullUFM,
- lookupUFM,
- lookupDirectlyUFM,
- IF_NOT_GHC(lookupWithDefaultUFM COMMA)
+ lookupUFM, lookupUFM_Directly,
+ lookupWithDefaultUFM, lookupWithDefaultUFM_Directly,
eltsUFM,
- ufmToList,
+ ufmToList
-- to make the interface self-sufficient
- Id, TyVar, Unique
- IF_ATTACK_PRAGMAS(COMMA u2i) -- profiling
) where
-import AbsUniType -- for specialisation to TyVars
-import Id -- for specialisation to Ids
-import IdInfo -- sigh
-import Maybes ( maybeToBool, Maybe(..) )
-import Name
-import Outputable
-import Unique ( u2i, mkUniqueGrimily, Unique )
+#if defined(COMPILING_GHC)
+CHK_Ubiq() -- debugging consistency check
+#endif
+
+import Unique ( Unique, u2i, mkUniqueGrimily )
import Util
+import Outputable ( Outputable(..), NamedThing(..), ExportFlag )
+import Pretty ( Pretty(..), PrettyRep )
+import PprStyle ( PprStyle )
+import SrcLoc ( SrcLoc )
+
#if ! OMIT_NATIVE_CODEGEN
-import AsmRegAlloc ( Reg )
#define IF_NCG(a) a
#else
#define IF_NCG(a) {--}
%* *
%************************************************************************
-We use @FiniteMaps@, with a (@getTheUnique@-able) @Unique@ as ``key''.
+We use @FiniteMaps@, with a (@getItsUnique@-able) @Unique@ as ``key''.
\begin{code}
emptyUFM :: UniqFM elt
sizeUFM :: UniqFM elt -> Int
lookupUFM :: NamedThing key => UniqFM elt -> key -> Maybe elt
-lookupDirectlyUFM -- when you've got the Unique already
+lookupUFM_Directly -- when you've got the Unique already
:: UniqFM elt -> Unique -> Maybe elt
lookupWithDefaultUFM
:: NamedThing key => UniqFM elt -> elt -> key -> elt
+lookupWithDefaultUFM_Directly
+ :: UniqFM elt -> elt -> Unique -> elt
eltsUFM :: UniqFM elt -> [elt]
ufmToList :: UniqFM elt -> [(Unique, elt)]
%************************************************************************
\begin{code}
+#if 0
+
type IdFinMap elt = UniqFM elt
type TyVarFinMap elt = UniqFM elt
type NameFinMap elt = UniqFM elt
type RegFinMap elt = UniqFM elt
-\end{code}
-\begin{code}
#ifdef __GLASGOW_HASKELL__
-- I don't think HBC was too happy about this (WDP 94/10)
#-}
#endif {- __GLASGOW_HASKELL__ -}
+#endif {- 0 -}
\end{code}
%************************************************************************
\begin{code}
emptyUFM = EmptyUFM
-singletonUFM key elt = mkLeafUFM (u2i (getTheUnique key)) elt
+singletonUFM key elt = mkLeafUFM (u2i (getItsUnique key)) elt
singletonDirectlyUFM key elt = mkLeafUFM (u2i key) elt
listToUFM key_elt_pairs
addToUFM_Directly fm u elt = insert_ele use_snd fm (u2i u) elt
addToUFM_C combiner fm key elt
- = insert_ele combiner fm (u2i (getTheUnique key)) elt
+ = insert_ele combiner fm (u2i (getItsUnique key)) elt
addListToUFM fm key_elt_pairs = addListToUFM_C use_snd fm key_elt_pairs
+addListToUFM_Directly fm uniq_elt_pairs = addListToUFM_directly_C use_snd fm uniq_elt_pairs
addListToUFM_C combiner fm key_elt_pairs
- = foldl (\ fm (k, e) -> insert_ele combiner fm (u2i (getTheUnique k)) e)
+ = foldl (\ fm (k, e) -> insert_ele combiner fm (u2i (getItsUnique k)) e)
fm key_elt_pairs
addListToUFM_directly_C combiner fm uniq_elt_pairs
\begin{code}
delListFromUFM fm lst = foldl delFromUFM fm lst
-delFromUFM fm key = delete fm (u2i (getTheUnique key))
+delFromUFM fm key = delete fm (u2i (getItsUnique key))
delete EmptyUFM _ = EmptyUFM
delete fm key = del_ele fm
del_ele nd@(NodeUFM j p t1 t2)
| j _GT_ key
= mkSLNodeUFM (NodeUFMData j p) (del_ele t1) t2
- | otherwise
+ | otherwise
= mkLSNodeUFM (NodeUFMData j p) t1 (del_ele t2)
del_ele _ = panic "Found EmptyUFM FM when rec-deleting"
-- j j' j
-- / \ + / \ ==> / \
-- t1 t2 t1' t2' t1 + t1' t2 + t2'
- --
+ --
mix_branches (SameRoot)
= mkSSNodeUFM (NodeUFMData j p)
(mix_trees t1 t1')
-- t1 t2 t1' t2' t1 t2 + j'
-- / \
-- t1' t2'
- mix_branches (LeftRoot Left) -- | trace "LL" True
+ mix_branches (LeftRoot Leftt) -- | trace "LL" True
= mkSLNodeUFM
(NodeUFMData j p)
- (mix_trees t1 right_t)
+ (mix_trees t1 right_t)
t2
- mix_branches (LeftRoot Right) -- | trace "LR" True
+ mix_branches (LeftRoot Rightt) -- | trace "LR" True
= mkLSNodeUFM
(NodeUFMData j p)
t1
- (mix_trees t2 right_t)
+ (mix_trees t2 right_t)
- mix_branches (RightRoot Left) -- | trace "RL" True
+ mix_branches (RightRoot Leftt) -- | trace "RL" True
= mkSLNodeUFM
(NodeUFMData j' p')
- (mix_trees left_t t1')
+ (mix_trees left_t t1')
t2'
- mix_branches (RightRoot Right) -- | trace "RR" True
+ mix_branches (RightRoot Rightt) -- | trace "RR" True
= mkLSNodeUFM
(NodeUFMData j' p')
t1'
- (mix_trees left_t t2')
+ (mix_trees left_t t2')
mix_trees _ _ = panic "EmptyUFM found when inserting into plusInt"
\end{code}
-- j j' j
-- / \ + / \ ==> / \
-- t1 t2 t1' t2' t1 t2
- --
- --
+ --
+ --
-- Fast, Ehh !
--
minus_branches (NewRoot nd _) = left_t
-- j j' j
-- / \ + / \ ==> / \
-- t1 t2 t1' t2' t1 + t1' t2 + t2'
- --
+ --
minus_branches (SameRoot)
= mkSSNodeUFM (NodeUFMData j p)
(minus_trees t1 t1')
--
-- The left is above the right
--
- minus_branches (LeftRoot Left)
+ minus_branches (LeftRoot Leftt)
= mkSLNodeUFM
(NodeUFMData j p)
- (minus_trees t1 right_t)
+ (minus_trees t1 right_t)
t2
- minus_branches (LeftRoot Right)
+ minus_branches (LeftRoot Rightt)
= mkLSNodeUFM
(NodeUFMData j p)
t1
- (minus_trees t2 right_t)
+ (minus_trees t2 right_t)
--
-- The right is above the left
--
- minus_branches (RightRoot Left)
+ minus_branches (RightRoot Leftt)
= minus_trees left_t t1'
- minus_branches (RightRoot Right)
+ minus_branches (RightRoot Rightt)
= minus_trees left_t t2'
minus_trees _ _ = panic "EmptyUFM found when insering into plusInt"
where
-- Given a disjoint j,j' (p >^ p' && p' >^ p):
--
- -- j j'
+ -- j j'
-- / \ + / \ ==> EmptyUFM
- -- t1 t2 t1' t2'
- --
+ -- t1 t2 t1' t2'
+ --
-- Fast, Ehh !
--
intersect_branches (NewRoot nd _) = EmptyUFM
-- j j' j
-- / \ + / \ ==> / \
-- t1 t2 t1' t2' t1 x t1' t2 x t2'
- --
+ --
intersect_branches (SameRoot)
= mkSSNodeUFM (NodeUFMData j p)
(intersect_trees t1 t1')
-- j j' t2 + j'
-- / \ + / \ ==> / \
-- t1 t2 t1' t2' t1' t2'
- --
+ --
-- This does cut down the search space quite a bit.
-
- intersect_branches (LeftRoot Left)
+
+ intersect_branches (LeftRoot Leftt)
= intersect_trees t1 right_t
- intersect_branches (LeftRoot Right)
+ intersect_branches (LeftRoot Rightt)
= intersect_trees t2 right_t
- intersect_branches (RightRoot Left)
+ intersect_branches (RightRoot Leftt)
= intersect_trees left_t t1'
- intersect_branches (RightRoot Right)
+ intersect_branches (RightRoot Rightt)
= intersect_trees left_t t2'
intersect_trees x y = panic ("EmptyUFM found when intersecting trees")
Lookup up a binary tree is easy (and fast).
\begin{code}
-lookupUFM fm key = lookup fm (u2i (getTheUnique key))
-lookupDirectlyUFM fm key = lookup fm (u2i key)
+lookupUFM fm key = lookup fm (u2i (getItsUnique key))
+lookupUFM_Directly fm key = lookup fm (u2i key)
lookupWithDefaultUFM fm deflt key
- = case lookup fm (u2i (getTheUnique key)) of
+ = case lookup fm (u2i (getItsUnique key)) of
+ Nothing -> deflt
+ Just elt -> elt
+
+lookupWithDefaultUFM_Directly fm deflt key
+ = case lookup fm (u2i key) of
Nothing -> deflt
Just elt -> elt
filter_tree f nd@(NodeUFM j p t1 t2)
= mkSSNodeUFM (NodeUFMData j p) (filter_tree f t1) (filter_tree f t2)
-filter_tree f lf@(LeafUFM i obj)
+filter_tree f lf@(LeafUFM i obj)
| f obj = lf
| otherwise = EmptyUFM
\end{code}
This is the information used when computing new NodeUFMs.
\begin{code}
-data Side = Left | Right
+data Side = Leftt | Rightt -- NB: avoid 1.3 names "Left" and "Right"
data CommonRoot
= LeftRoot Side -- which side is the right down ?
| RightRoot Side -- which side is the left down ?
| otherwise -> NewRoot nd (j _GT_ j2)
where
decideSide :: Bool -> Side
- decideSide True = Left
- decideSide False = Right
+ decideSide True = Leftt
+ decideSide False = Rightt
\end{code}
This might be better in Util.lhs ?
{-# INLINE shiftR_ #-}
shiftL_ n p = word2Int#((int2Word# n) `shiftL#` p)
shiftR_ n p = word2Int#((int2Word# n) `shiftr` p)
-# if __GLASGOW_HASKELL__ >= 23
where
shiftr x y = shiftRA# x y
-# else
- shiftr x y = shiftR# x y
-# endif
#else {- not GHC -}
shiftL_ n p = n * (2 ^ p)
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