2 % (c) The GRASP/AQUA Project, Glasgow University, 1993-1998
4 \section[AbsCUtils]{Help functions for Abstract~C datatype}
9 mkAbstractCs, mkAbsCStmts,
13 mixedTypeLocn, mixedPtrLocn,
16 -- printing/forcing stuff comes from PprAbsC
19 #include "HsVersions.h"
22 import CLabel ( mkMAP_FROZEN_infoLabel )
23 import Digraph ( stronglyConnComp, SCC(..) )
24 import DataCon ( fIRST_TAG, ConTag )
25 import Literal ( literalPrimRep, mkMachWord, mkMachInt )
26 import PrimRep ( getPrimRepSize, PrimRep(..) )
27 import PrimOp ( PrimOp(..) )
28 import MachOp ( MachOp(..), isDefinitelyInlineMachOp )
29 import Unique ( Unique{-instance Eq-} )
30 import UniqSupply ( uniqFromSupply, uniqsFromSupply, splitUniqSupply,
32 import CmdLineOpts ( opt_EmitCExternDecls )
33 import ForeignCall ( ForeignCall(..), CCallSpec(..), CCallTarget(..), Safety(..),
34 isDynamicTarget, isCasmTarget, defaultCCallConv )
35 import StgSyn ( StgOp(..) )
36 import SMRep ( arrPtrsHdrSize, arrWordsHdrSize, fixedHdrSize )
38 import Panic ( panic )
41 import Maybe ( isJust )
46 Check if there is any real code in some Abstract~C. If so, return it
47 (@Just ...@); otherwise, return @Nothing@. Don't be too strict!
49 It returns the "reduced" code in the Just part so that the work of
50 discarding AbsCNops isn't lost, and so that if the caller uses
51 the reduced version there's less danger of a big tree of AbsCNops getting
52 materialised and causing a space leak.
55 nonemptyAbsC :: AbstractC -> Maybe AbstractC
56 nonemptyAbsC AbsCNop = Nothing
57 nonemptyAbsC (AbsCStmts s1 s2) = case (nonemptyAbsC s1) of
58 Nothing -> nonemptyAbsC s2
59 Just x -> Just (AbsCStmts x s2)
60 nonemptyAbsC s@(CSimultaneous c) = case (nonemptyAbsC c) of
63 nonemptyAbsC other = Just other
67 mkAbstractCs :: [AbstractC] -> AbstractC
68 mkAbstractCs [] = AbsCNop
69 mkAbstractCs cs = foldr1 mkAbsCStmts cs
71 -- for fiddling around w/ killing off AbsCNops ... (ToDo)
72 mkAbsCStmts :: AbstractC -> AbstractC -> AbstractC
73 mkAbsCStmts AbsCNop c = c
74 mkAbsCStmts c AbsCNop = c
75 mkAbsCStmts c1 c2 = c1 `AbsCStmts` c2
77 {- Discarded SLPJ June 95; it calls nonemptyAbsC too much!
78 = case (case (nonemptyAbsC abc2) of
80 Just d2 -> d2) of { abc2b ->
82 case (nonemptyAbsC abc1) of {
84 Just d1 -> AbsCStmts d1 abc2b
89 Get the sho' 'nuff statements out of an @AbstractC@.
91 mkAbsCStmtList :: AbstractC -> [AbstractC]
93 mkAbsCStmtList absC = mkAbsCStmtList' absC []
95 -- Optimised a la foldr/build!
97 mkAbsCStmtList' AbsCNop r = r
99 mkAbsCStmtList' (AbsCStmts s1 s2) r
100 = mkAbsCStmtList' s1 (mkAbsCStmtList' s2 r)
102 mkAbsCStmtList' s@(CSimultaneous c) r
103 = if null (mkAbsCStmtList c) then r else s : r
105 mkAbsCStmtList' other r = other : r
109 mkAlgAltsCSwitch :: CAddrMode -> [(ConTag, AbstractC)] -> AbstractC -> AbstractC
111 mkAlgAltsCSwitch scrutinee tagged_alts deflt_absc
112 | isJust (nonemptyAbsC deflt_absc)
113 = CSwitch scrutinee (adjust tagged_alts) deflt_absc
115 = CSwitch scrutinee (adjust rest) first_alt
117 -- it's ok to convert one of the alts into a default if we don't already have
118 -- one, because this is an algebraic case and we're guaranteed that the tag
119 -- will match one of the branches.
120 ((_,first_alt):rest) = tagged_alts
122 -- Adjust the tags in the switch to start at zero.
123 -- This is the convention used by primitive ops which return algebraic
124 -- data types. Why? Because for two-constructor types, zero is faster
125 -- to create and distinguish from 1 than are 1 and 2.
127 -- We also need to convert to Literals to keep the CSwitch happy
129 = [ (mkMachWord (toInteger (tag - fIRST_TAG)), abs_c)
130 | (tag, abs_c) <- tagged_alts ]
133 %************************************************************************
135 \subsubsection[AbsCUtils-kinds-from-MagicIds]{Kinds from MagicIds}
137 %************************************************************************
140 magicIdPrimRep BaseReg = PtrRep
141 magicIdPrimRep (VanillaReg kind _) = kind
142 magicIdPrimRep (FloatReg _) = FloatRep
143 magicIdPrimRep (DoubleReg _) = DoubleRep
144 magicIdPrimRep (LongReg kind _) = kind
145 magicIdPrimRep Sp = PtrRep
146 magicIdPrimRep Su = PtrRep
147 magicIdPrimRep SpLim = PtrRep
148 magicIdPrimRep Hp = PtrRep
149 magicIdPrimRep HpLim = PtrRep
150 magicIdPrimRep CurCostCentre = CostCentreRep
151 magicIdPrimRep VoidReg = VoidRep
152 magicIdPrimRep CurrentTSO = ThreadIdRep
153 magicIdPrimRep CurrentNursery = PtrRep
154 magicIdPrimRep HpAlloc = WordRep
157 %************************************************************************
159 \subsection[AbsCUtils-amode-kinds]{Finding @PrimitiveKinds@ of amodes}
161 %************************************************************************
163 See also the return conventions for unboxed things; currently living
164 in @CgCon@ (next to the constructor return conventions).
166 ToDo: tiny tweaking may be in order
168 getAmodeRep :: CAddrMode -> PrimRep
170 getAmodeRep (CVal _ kind) = kind
171 getAmodeRep (CAddr _) = PtrRep
172 getAmodeRep (CReg magic_id) = magicIdPrimRep magic_id
173 getAmodeRep (CTemp uniq kind) = kind
174 getAmodeRep (CLbl _ kind) = kind
175 getAmodeRep (CCharLike _) = PtrRep
176 getAmodeRep (CIntLike _) = PtrRep
177 getAmodeRep (CLit lit) = literalPrimRep lit
178 getAmodeRep (CMacroExpr kind _ _) = kind
179 getAmodeRep (CJoinPoint _) = panic "getAmodeRep:CJoinPoint"
180 getAmodeRep (CMem rep addr) = rep
183 @mixedTypeLocn@ tells whether an amode identifies an ``StgWord''
184 location; that is, one which can contain values of various types.
187 mixedTypeLocn :: CAddrMode -> Bool
189 mixedTypeLocn (CVal (NodeRel _) _) = True
190 mixedTypeLocn (CVal (SpRel _) _) = True
191 mixedTypeLocn (CVal (HpRel _) _) = True
192 mixedTypeLocn other = False -- All the rest
195 @mixedPtrLocn@ tells whether an amode identifies a
196 location which can contain values of various pointer types.
199 mixedPtrLocn :: CAddrMode -> Bool
201 mixedPtrLocn (CVal (SpRel _) _) = True
202 mixedPtrLocn other = False -- All the rest
205 %************************************************************************
207 \subsection[AbsCUtils-flattening]{Flatten Abstract~C}
209 %************************************************************************
211 The following bits take ``raw'' Abstract~C, which may have all sorts of
212 nesting, and flattens it into one long @AbsCStmtList@. Mainly,
213 @CClosureInfos@ and code for switches are pulled out to the top level.
215 The various functions herein tend to produce
218 A {\em flattened} \tr{<something>} of interest for ``here'', and
220 Some {\em unflattened} Abstract~C statements to be carried up to the
221 top-level. The only real reason (now) that it is unflattened is
222 because it means the recursive flattening can be done in just one
223 place rather than having to remember lots of places.
226 Care is taken to reduce the occurrence of forward references, while still
227 keeping laziness a much as possible. Essentially, this means that:
230 {\em All} the top-level C statements resulting from flattening a
231 particular AbsC statement (whether the latter is nested or not) appear
232 before {\em any} of the code for a subsequent AbsC statement;
234 but stuff nested within any AbsC statement comes
235 out before the code for the statement itself.
238 The ``stuff to be carried up'' always includes a label: a
239 @CStaticClosure@, @CRetDirect@, @CFlatRetVector@, or
240 @CCodeBlock@. The latter turns into a C function, and is never
241 actually produced by the code generator. Rather it always starts life
242 as a @CCodeBlock@ addressing mode; when such an addr mode is
243 flattened, the ``tops'' stuff is a @CCodeBlock@.
246 flattenAbsC :: UniqSupply -> AbstractC -> AbstractC
249 = case (initFlt us (flatAbsC abs_C)) of { (here, tops) ->
250 here `mkAbsCStmts` tops }
253 %************************************************************************
255 \subsubsection{Flattening monadery}
257 %************************************************************************
259 The flattener is monadised. It's just a @UniqueSupply@.
262 type FlatM result = UniqSupply -> result
264 initFlt :: UniqSupply -> FlatM a -> a
266 initFlt init_us m = m init_us
268 {-# INLINE thenFlt #-}
269 {-# INLINE returnFlt #-}
271 thenFlt :: FlatM a -> (a -> FlatM b) -> FlatM b
274 = case (splitUniqSupply us) of { (s1, s2) ->
275 case (expr s1) of { result ->
278 returnFlt :: a -> FlatM a
279 returnFlt result us = result
281 mapFlt :: (a -> FlatM b) -> [a] -> FlatM [b]
283 mapFlt f [] = returnFlt []
285 = f x `thenFlt` \ r ->
286 mapFlt f xs `thenFlt` \ rs ->
289 mapAndUnzipFlt :: (a -> FlatM (b,c)) -> [a] -> FlatM ([b],[c])
291 mapAndUnzipFlt f [] = returnFlt ([],[])
292 mapAndUnzipFlt f (x:xs)
293 = f x `thenFlt` \ (r1, r2) ->
294 mapAndUnzipFlt f xs `thenFlt` \ (rs1, rs2) ->
295 returnFlt (r1:rs1, r2:rs2)
297 getUniqFlt :: FlatM Unique
298 getUniqFlt us = uniqFromSupply us
300 getUniqsFlt :: FlatM [Unique]
301 getUniqsFlt us = uniqsFromSupply us
304 %************************************************************************
306 \subsubsection{Flattening the top level}
308 %************************************************************************
311 flatAbsC :: AbstractC
312 -> FlatM (AbstractC, -- Stuff to put inline [Both are fully
313 AbstractC) -- Stuff to put at top level flattened]
315 flatAbsC AbsCNop = returnFlt (AbsCNop, AbsCNop)
317 flatAbsC (AbsCStmts s1 s2)
318 = flatAbsC s1 `thenFlt` \ (inline_s1, top_s1) ->
319 flatAbsC s2 `thenFlt` \ (inline_s2, top_s2) ->
320 returnFlt (mkAbsCStmts inline_s1 inline_s2,
321 mkAbsCStmts top_s1 top_s2)
323 flatAbsC (CClosureInfoAndCode cl_info slow maybe_fast descr)
324 = flatAbsC slow `thenFlt` \ (slow_heres, slow_tops) ->
325 flat_maybe maybe_fast `thenFlt` \ (fast_heres, fast_tops) ->
326 returnFlt (AbsCNop, mkAbstractCs [slow_tops, fast_tops,
327 CClosureInfoAndCode cl_info slow_heres fast_heres descr]
330 flatAbsC (CCodeBlock lbl abs_C)
331 = flatAbsC abs_C `thenFlt` \ (absC_heres, absC_tops) ->
332 returnFlt (AbsCNop, absC_tops `mkAbsCStmts` CCodeBlock lbl absC_heres)
334 flatAbsC (CRetDirect uniq slow_code srt liveness)
335 = flatAbsC slow_code `thenFlt` \ (heres, tops) ->
337 mkAbstractCs [ tops, CRetDirect uniq heres srt liveness ])
339 flatAbsC (CSwitch discrim alts deflt)
340 = mapAndUnzipFlt flat_alt alts `thenFlt` \ (flat_alts, flat_alts_tops) ->
341 flatAbsC deflt `thenFlt` \ (flat_def_alt, def_tops) ->
343 CSwitch discrim flat_alts flat_def_alt,
344 mkAbstractCs (def_tops : flat_alts_tops)
348 = flatAbsC absC `thenFlt` \ (alt_heres, alt_tops) ->
349 returnFlt ( (tag, alt_heres), alt_tops )
351 flatAbsC stmt@(COpStmt results (StgFCallOp (CCall ccall@(CCallSpec target _ _)) uniq) args _)
352 | is_dynamic -- Emit a typedef if its a dynamic call
353 || (opt_EmitCExternDecls && not (isCasmTarget target)) -- or we want extern decls
354 = returnFlt (stmt, CCallTypedef is_dynamic ccall uniq results args)
356 is_dynamic = isDynamicTarget target
358 flatAbsC stmt@(CSimultaneous abs_c)
359 = flatAbsC abs_c `thenFlt` \ (stmts_here, tops) ->
360 doSimultaneously stmts_here `thenFlt` \ new_stmts_here ->
361 returnFlt (new_stmts_here, tops)
363 flatAbsC stmt@(CCheck macro amodes code)
364 = flatAbsC code `thenFlt` \ (code_here, code_tops) ->
365 returnFlt (CCheck macro amodes code_here, code_tops)
367 -- the TICKY_CTR macro always needs to be hoisted out to the top level.
369 flatAbsC stmt@(CCallProfCtrMacro str amodes)
370 | str == SLIT("TICK_CTR") = returnFlt (AbsCNop, stmt)
371 | otherwise = returnFlt (stmt, AbsCNop)
373 -- Some statements need no flattening at all:
374 flatAbsC stmt@(CMacroStmt macro amodes) = returnFlt (stmt, AbsCNop)
375 flatAbsC stmt@(CCallProfCCMacro str amodes) = returnFlt (stmt, AbsCNop)
376 flatAbsC stmt@(CAssign dest source) = returnFlt (stmt, AbsCNop)
377 flatAbsC stmt@(CJump target) = returnFlt (stmt, AbsCNop)
378 flatAbsC stmt@(CFallThrough target) = returnFlt (stmt, AbsCNop)
379 flatAbsC stmt@(CReturn target return_info) = returnFlt (stmt, AbsCNop)
380 flatAbsC stmt@(CInitHdr a b cc sz) = returnFlt (stmt, AbsCNop)
381 flatAbsC stmt@(CMachOpStmt res mop args m_vols) = returnFlt (stmt, AbsCNop)
382 flatAbsC stmt@(COpStmt results (StgFCallOp _ _) args vol_regs)
383 = returnFlt (stmt, AbsCNop)
384 flatAbsC stmt@(COpStmt results (StgPrimOp op) args vol_regs)
385 = dscCOpStmt (filter non_void_amode results) op
386 (filter non_void_amode args) vol_regs
389 COpStmt _ _ _ _ -> panic "flatAbsC - dscCOpStmt" -- make sure we don't loop!
390 other -> flatAbsC other
392 A gruesome hack for printing the names of inline primops when they
397 = getUniqFlt `thenFlt` \ uu ->
398 flatAbsC (CSequential [moo uu (showSDoc (ppr op)), xxx])
404 (CCall (CCallSpec (CasmTarget (_PK_ (mktxt op_str)))
405 defaultCCallConv PlaySafe))
411 = " asm(\"pushal;\"); printf(\"%%s\\n\",\"" ++ op_str ++ "\"); asm(\"popal\"); "
414 flatAbsC (CSequential abcs)
415 = mapAndUnzipFlt flatAbsC abcs `thenFlt` \ (inlines, tops) ->
416 returnFlt (CSequential inlines, foldr AbsCStmts AbsCNop tops)
419 -- Some statements only make sense at the top level, so we always float
420 -- them. This probably isn't necessary.
421 flatAbsC stmt@(CStaticClosure _ _ _) = returnFlt (AbsCNop, stmt)
422 flatAbsC stmt@(CClosureTbl _) = returnFlt (AbsCNop, stmt)
423 flatAbsC stmt@(CSRT _ _) = returnFlt (AbsCNop, stmt)
424 flatAbsC stmt@(CBitmap _ _) = returnFlt (AbsCNop, stmt)
425 flatAbsC stmt@(CCostCentreDecl _ _) = returnFlt (AbsCNop, stmt)
426 flatAbsC stmt@(CCostCentreStackDecl _) = returnFlt (AbsCNop, stmt)
427 flatAbsC stmt@(CSplitMarker) = returnFlt (AbsCNop, stmt)
428 flatAbsC stmt@(CRetVector _ _ _ _) = returnFlt (AbsCNop, stmt)
429 flatAbsC stmt@(CModuleInitBlock _ _) = returnFlt (AbsCNop, stmt)
433 flat_maybe :: Maybe AbstractC -> FlatM (Maybe AbstractC, AbstractC)
434 flat_maybe Nothing = returnFlt (Nothing, AbsCNop)
435 flat_maybe (Just abs_c) = flatAbsC abs_c `thenFlt` \ (heres, tops) ->
436 returnFlt (Just heres, tops)
439 %************************************************************************
441 \subsection[flat-simultaneous]{Doing things simultaneously}
443 %************************************************************************
446 doSimultaneously :: AbstractC -> FlatM AbstractC
449 Generate code to perform the @CAssign@s and @COpStmt@s in the
450 input simultaneously, using temporary variables when necessary.
452 We use the strongly-connected component algorithm, in which
453 * the vertices are the statements
454 * an edge goes from s1 to s2 iff
455 s1 assigns to something s2 uses
456 that is, if s1 should *follow* s2 in the final order
459 type CVertex = (Int, AbstractC) -- Give each vertex a unique number,
460 -- for fast comparison
462 doSimultaneously abs_c
464 enlisted = en_list abs_c
466 case enlisted of -- it's often just one stmt
467 [] -> returnFlt AbsCNop
469 _ -> doSimultaneously1 (zip [(1::Int)..] enlisted)
471 -- en_list puts all the assignments in a list, filtering out Nops and
472 -- assignments which do nothing
474 en_list (AbsCStmts a1 a2) = en_list a1 ++ en_list a2
475 en_list (CAssign am1 am2) | sameAmode am1 am2 = []
476 en_list other = [other]
478 sameAmode :: CAddrMode -> CAddrMode -> Bool
479 -- ToDo: Move this function, or make CAddrMode an instance of Eq
480 -- At the moment we put in just enough to catch the cases we want:
481 -- the second (destination) argument is always a CVal.
482 sameAmode (CReg r1) (CReg r2) = r1 == r2
483 sameAmode (CVal (SpRel r1) _) (CVal (SpRel r2) _) = r1 ==# r2
484 sameAmode other1 other2 = False
486 doSimultaneously1 :: [CVertex] -> FlatM AbstractC
487 doSimultaneously1 vertices
489 edges = [ (vertex, key1, edges_from stmt1)
490 | vertex@(key1, stmt1) <- vertices
492 edges_from stmt1 = [ key2 | (key2, stmt2) <- vertices,
493 stmt1 `should_follow` stmt2
495 components = stronglyConnComp edges
497 -- do_components deal with one strongly-connected component
498 -- Not cyclic, or singleton? Just do it
499 do_component (AcyclicSCC (n,abs_c)) = returnFlt abs_c
500 do_component (CyclicSCC [(n,abs_c)]) = returnFlt abs_c
502 -- Cyclic? Then go via temporaries. Pick one to
503 -- break the loop and try again with the rest.
504 do_component (CyclicSCC ((n,first_stmt) : rest))
505 = doSimultaneously1 rest `thenFlt` \ abs_cs ->
506 go_via_temps first_stmt `thenFlt` \ (to_temps, from_temps) ->
507 returnFlt (mkAbstractCs [to_temps, abs_cs, from_temps])
509 go_via_temps (CAssign dest src)
510 = getUniqFlt `thenFlt` \ uniq ->
512 the_temp = CTemp uniq (getAmodeRep dest)
514 returnFlt (CAssign the_temp src, CAssign dest the_temp)
516 go_via_temps (COpStmt dests op srcs vol_regs)
517 = getUniqsFlt `thenFlt` \ uniqs ->
519 the_temps = zipWith (\ u d -> CTemp u (getAmodeRep d)) uniqs dests
521 returnFlt (COpStmt the_temps op srcs vol_regs,
522 mkAbstractCs (zipWith CAssign dests the_temps))
524 mapFlt do_component components `thenFlt` \ abs_cs ->
525 returnFlt (mkAbstractCs abs_cs)
528 should_follow :: AbstractC -> AbstractC -> Bool
529 (CAssign dest1 _) `should_follow` (CAssign _ src2)
530 = dest1 `conflictsWith` src2
531 (COpStmt dests1 _ _ _) `should_follow` (CAssign _ src2)
532 = or [dest1 `conflictsWith` src2 | dest1 <- dests1]
533 (CAssign dest1 _)`should_follow` (COpStmt _ _ srcs2 _)
534 = or [dest1 `conflictsWith` src2 | src2 <- srcs2]
535 (COpStmt dests1 _ _ _) `should_follow` (COpStmt _ _ srcs2 _)
536 = or [dest1 `conflictsWith` src2 | dest1 <- dests1, src2 <- srcs2]
539 @conflictsWith@ tells whether an assignment to its first argument will
540 screw up an access to its second.
543 conflictsWith :: CAddrMode -> CAddrMode -> Bool
544 (CReg reg1) `conflictsWith` (CReg reg2) = reg1 == reg2
545 (CReg reg) `conflictsWith` (CVal reg_rel _) = reg `regConflictsWithRR` reg_rel
546 (CReg reg) `conflictsWith` (CAddr reg_rel) = reg `regConflictsWithRR` reg_rel
547 (CTemp u1 _) `conflictsWith` (CTemp u2 _) = u1 == u2
548 (CVal reg_rel1 k1) `conflictsWith` (CVal reg_rel2 k2)
549 = rrConflictsWithRR (getPrimRepSize k1) (getPrimRepSize k2) reg_rel1 reg_rel2
551 other1 `conflictsWith` other2 = False
552 -- CAddr and literals are impossible on the LHS of an assignment
554 regConflictsWithRR :: MagicId -> RegRelative -> Bool
556 regConflictsWithRR (VanillaReg k n) (NodeRel _) | n ==# (_ILIT 1) = True
557 regConflictsWithRR Sp (SpRel _) = True
558 regConflictsWithRR Hp (HpRel _) = True
559 regConflictsWithRR _ _ = False
561 rrConflictsWithRR :: Int -> Int -- Sizes of two things
562 -> RegRelative -> RegRelative -- The two amodes
565 rrConflictsWithRR s1b s2b rr1 rr2 = rr rr1 rr2
570 rr (SpRel o1) (SpRel o2)
571 | s1 ==# (_ILIT 0) || s2 ==# (_ILIT 0) = False -- No conflict if either is size zero
572 | s1 ==# (_ILIT 1) && s2 ==# (_ILIT 1) = o1 ==# o2
573 | otherwise = (o1 +# s1) >=# o2 &&
576 rr (NodeRel o1) (NodeRel o2)
577 | s1 ==# (_ILIT 0) || s2 ==# (_ILIT 0) = False -- No conflict if either is size zero
578 | s1 ==# (_ILIT 1) && s2 ==# (_ILIT 1) = o1 ==# o2
579 | otherwise = True -- Give up
581 rr (HpRel _) (HpRel _) = True -- Give up (ToDo)
583 rr other1 other2 = False
586 %************************************************************************
588 \subsection[flat-primops]{Translating COpStmts to CMachOpStmts}
590 %************************************************************************
594 -- We begin with some helper functions. The main Dude here is
595 -- dscCOpStmt, defined a little further down.
597 ------------------------------------------------------------------------------
599 -- Assumes no volatiles
601 -- res = arg >> (bits-per-word / 2) when little-endian
603 -- res = arg & ((1 << (bits-per-word / 2)) - 1) when big-endian
605 -- In other words, if arg had been stored in memory, makes res the
606 -- halfword of arg which would have had the higher address. This is
607 -- why it needs to take into account endianness.
609 mkHalfWord_HIADDR res arg
610 = mkTemp IntRep `thenFlt` \ t_hw_shift ->
611 mkTemp WordRep `thenFlt` \ t_hw_mask1 ->
612 mkTemp WordRep `thenFlt` \ t_hw_mask2 ->
614 = CMachOpStmt (Just t_hw_shift)
615 MO_Nat_Shl [CBytesPerWord, CLit (mkMachInt 2)] Nothing
617 = CMachOpStmt (Just t_hw_mask1)
618 MO_Nat_Shl [CLit (mkMachWord 1), t_hw_shift] Nothing
620 = CMachOpStmt (Just t_hw_mask2)
621 MO_Nat_Sub [t_hw_mask1, CLit (mkMachWord 1)] Nothing
624 = CSequential [ a_hw_shift, a_hw_mask1, a_hw_mask2,
625 CMachOpStmt (Just res) MO_Nat_And [arg, t_hw_mask2] Nothing
628 = CSequential [ a_hw_shift,
629 CMachOpStmt (Just res) MO_Nat_Shr [arg, t_hw_shift] Nothing
636 mkTemp :: PrimRep -> FlatM CAddrMode
638 = getUniqFlt `thenFlt` \ uniq -> returnFlt (CTemp uniq rep)
640 mkTemps = mapFlt mkTemp
642 mkDerefOff :: PrimRep -> CAddrMode -> Int -> CAddrMode
643 mkDerefOff rep base off
644 | off == 0 -- optimisation
647 = CMem rep (CAddr (CIndex base (CLit (mkMachInt (toInteger off))) rep))
649 mkNoDerefOff :: PrimRep -> CAddrMode -> Int -> CAddrMode
650 mkNoDerefOff rep base off
651 = CAddr (CIndex base (CLit (mkMachInt (toInteger off))) rep)
653 -- Sigh. This is done in 3 seperate places. Should be
654 -- commoned up (here, in pprAbsC of COpStmt, and presumably
655 -- somewhere in the NCG).
657 = case getAmodeRep amode of
661 -- Helpers for translating various minor variants of array indexing.
663 doIndexOffForeignObjOp maybe_post_read_cast rep res addr idx
664 = mkBasicIndexedRead fixedHdrSize maybe_post_read_cast rep res addr idx
666 doIndexOffAddrOp maybe_post_read_cast rep res addr idx
667 = mkBasicIndexedRead 0 maybe_post_read_cast rep res addr idx
669 doIndexByteArrayOp maybe_post_read_cast rep res addr idx
670 = mkBasicIndexedRead arrWordsHdrSize maybe_post_read_cast rep res addr idx
672 doReadPtrArrayOp res addr idx
673 = mkBasicIndexedRead arrPtrsHdrSize Nothing PtrRep res addr idx
676 doWriteOffAddrOp maybe_pre_write_cast rep addr idx val
677 = mkBasicIndexedWrite 0 maybe_pre_write_cast rep addr idx val
679 doWriteByteArrayOp maybe_pre_write_cast rep addr idx val
680 = mkBasicIndexedWrite arrWordsHdrSize maybe_pre_write_cast rep addr idx val
682 doWritePtrArrayOp addr idx val
683 = mkBasicIndexedWrite arrPtrsHdrSize Nothing PtrRep addr idx val
687 mkBasicIndexedRead offw Nothing read_rep res base idx
689 CMachOpStmt (Just res) (MO_ReadOSBI offw read_rep) [base,idx] Nothing
691 mkBasicIndexedRead offw (Just cast_to_mop) read_rep res base idx
692 = mkTemp read_rep `thenFlt` \ tmp ->
693 (returnFlt . CSequential) [
694 CMachOpStmt (Just tmp) (MO_ReadOSBI offw read_rep) [base,idx] Nothing,
695 CMachOpStmt (Just res) cast_to_mop [tmp] Nothing
698 mkBasicIndexedWrite offw Nothing write_rep base idx val
700 CMachOpStmt Nothing (MO_WriteOSBI offw write_rep) [base,idx,val] Nothing
702 mkBasicIndexedWrite offw (Just cast_to_mop) write_rep base idx val
703 = mkTemp write_rep `thenFlt` \ tmp ->
704 (returnFlt . CSequential) [
705 CMachOpStmt (Just tmp) cast_to_mop [val] Nothing,
706 CMachOpStmt Nothing (MO_WriteOSBI offw write_rep) [base,idx,tmp] Nothing
710 -- Simple dyadic op but one for which we need to cast first arg to
711 -- be sure of correctness
712 translateOp_dyadic_cast1 mop res cast_arg1_to arg1 arg2 vols
713 = mkTemp cast_arg1_to `thenFlt` \ arg1casted ->
714 (returnFlt . CSequential) [
715 CAssign arg1casted arg1,
716 CMachOpStmt (Just res) mop [arg1casted,arg2]
717 (if isDefinitelyInlineMachOp mop then Nothing else Just vols)
720 getBitsPerWordMinus1 :: FlatM (AbstractC, CAddrMode)
722 = mkTemps [IntRep, IntRep] `thenFlt` \ [t1,t2] ->
725 CMachOpStmt (Just t1) MO_Nat_Shl
726 [CBytesPerWord, CLit (mkMachInt 3)] Nothing,
727 CMachOpStmt (Just t2) MO_Nat_Sub
728 [t1, CLit (mkMachInt 1)] Nothing
733 ------------------------------------------------------------------------------
735 -- This is the main top-level desugarer PrimOps into MachOps. First we
736 -- handle various awkward cases specially. The remaining easy cases are
737 -- then handled by translateOp, defined below.
740 dscCOpStmt :: [CAddrMode] -- Results
742 -> [CAddrMode] -- Arguments
743 -> [MagicId] -- Potentially volatile/live registers
744 -- (to save/restore around the op)
748 dscCOpStmt [res_r,res_c] IntAddCOp [aa,bb] vols
750 With some bit-twiddling, we can define int{Add,Sub}Czh portably in
751 C, and without needing any comparisons. This may not be the
752 fastest way to do it - if you have better code, please send it! --SDM
754 Return : r = a + b, c = 0 if no overflow, 1 on overflow.
756 We currently don't make use of the r value if c is != 0 (i.e.
757 overflow), we just convert to big integers and try again. This
758 could be improved by making r and c the correct values for
759 plugging into a new J#.
761 { r = ((I_)(a)) + ((I_)(b)); \
762 c = ((StgWord)(~(((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
763 >> (BITS_IN (I_) - 1); \
765 Wading through the mass of bracketry, it seems to reduce to:
766 c = ( (~(a^b)) & (a^r) ) >>unsigned (BITS_IN(I_)-1)
773 c = t4 >>unsigned BITS_IN(I_)-1
775 = mkTemps [IntRep,IntRep,IntRep,IntRep] `thenFlt` \ [t1,t2,t3,t4] ->
776 getBitsPerWordMinus1 `thenFlt` \ (bpw1_code,bpw1_t) ->
777 (returnFlt . CSequential) [
778 CMachOpStmt (Just res_r) MO_Nat_Add [aa,bb] Nothing,
779 CMachOpStmt (Just t1) MO_Nat_Xor [aa,bb] Nothing,
780 CMachOpStmt (Just t2) MO_Nat_Not [t1] Nothing,
781 CMachOpStmt (Just t3) MO_Nat_Xor [aa,res_r] Nothing,
782 CMachOpStmt (Just t4) MO_Nat_And [t2,t3] Nothing,
784 CMachOpStmt (Just res_c) MO_Nat_Shr [t4, bpw1_t] Nothing
788 dscCOpStmt [res_r,res_c] IntSubCOp [aa,bb] vols
790 #define subIntCzh(r,c,a,b) \
791 { r = ((I_)(a)) - ((I_)(b)); \
792 c = ((StgWord)((((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
793 >> (BITS_IN (I_) - 1); \
796 c = ((a^b) & (a^r)) >>unsigned (BITS_IN(I_)-1)
801 c = t3 >>unsigned BITS_IN(I_)-1
803 = mkTemps [IntRep,IntRep,IntRep] `thenFlt` \ [t1,t2,t3] ->
804 getBitsPerWordMinus1 `thenFlt` \ (bpw1_code,bpw1_t) ->
805 (returnFlt . CSequential) [
806 CMachOpStmt (Just res_r) MO_Nat_Sub [aa,bb] Nothing,
807 CMachOpStmt (Just t1) MO_Nat_Xor [aa,bb] Nothing,
808 CMachOpStmt (Just t2) MO_Nat_Xor [aa,res_r] Nothing,
809 CMachOpStmt (Just t3) MO_Nat_And [t1,t2] Nothing,
811 CMachOpStmt (Just res_c) MO_Nat_Shr [t3, bpw1_t] Nothing
815 -- #define parzh(r,node) r = 1
816 dscCOpStmt [res] ParOp [arg] vols
818 (CAssign res (CLit (mkMachInt 1)))
820 -- #define readMutVarzh(r,a) r=(P_)(((StgMutVar *)(a))->var)
821 dscCOpStmt [res] ReadMutVarOp [mutv] vols
823 (CAssign res (mkDerefOff PtrRep mutv fixedHdrSize))
825 -- #define writeMutVarzh(a,v) (P_)(((StgMutVar *)(a))->var)=(v)
826 dscCOpStmt [] WriteMutVarOp [mutv,var] vols
828 (CAssign (mkDerefOff PtrRep mutv fixedHdrSize) var)
831 -- #define ForeignObj_CLOSURE_DATA(c) (((StgForeignObj *)c)->data)
832 -- #define foreignObjToAddrzh(r,fo) r=ForeignObj_CLOSURE_DATA(fo)
833 dscCOpStmt [res] ForeignObjToAddrOp [fo] vols
835 (CAssign res (mkDerefOff PtrRep fo fixedHdrSize))
837 -- #define writeForeignObjzh(res,datum) \
838 -- (ForeignObj_CLOSURE_DATA(res) = (P_)(datum))
839 dscCOpStmt [] WriteForeignObjOp [fo,addr] vols
841 (CAssign (mkDerefOff PtrRep fo fixedHdrSize) addr)
844 -- #define sizzeofByteArrayzh(r,a) \
845 -- r = (((StgArrWords *)(a))->words * sizeof(W_))
846 dscCOpStmt [res] SizeofByteArrayOp [arg] vols
847 = mkTemp WordRep `thenFlt` \ w ->
848 (returnFlt . CSequential) [
849 CAssign w (mkDerefOff WordRep arg fixedHdrSize),
851 MO_NatU_Mul [w, CBytesPerWord] (Just vols),
855 -- #define sizzeofMutableByteArrayzh(r,a) \
856 -- r = (((StgArrWords *)(a))->words * sizeof(W_))
857 dscCOpStmt [res] SizeofMutableByteArrayOp [arg] vols
858 = dscCOpStmt [res] SizeofByteArrayOp [arg] vols
861 -- #define touchzh(o) /* nothing */
862 dscCOpStmt [] TouchOp [arg] vols
865 -- #define byteArrayContentszh(r,a) r = BYTE_ARR_CTS(a)
866 dscCOpStmt [res] ByteArrayContents_Char [arg] vols
867 = mkTemp PtrRep `thenFlt` \ ptr ->
868 (returnFlt . CSequential) [
869 CMachOpStmt (Just ptr) MO_NatU_to_NatP [arg] Nothing,
870 CAssign ptr (mkNoDerefOff WordRep ptr arrWordsHdrSize),
874 -- #define stableNameToIntzh(r,s) (r = ((StgStableName *)s)->sn)
875 dscCOpStmt [res] StableNameToIntOp [arg] vols
877 (CAssign res (mkDerefOff WordRep arg fixedHdrSize))
879 -- #define eqStableNamezh(r,sn1,sn2) \
880 -- (r = (((StgStableName *)sn1)->sn == ((StgStableName *)sn2)->sn))
881 dscCOpStmt [res] EqStableNameOp [arg1,arg2] vols
882 = mkTemps [WordRep, WordRep] `thenFlt` \ [sn1,sn2] ->
883 (returnFlt . CSequential) [
884 CAssign sn1 (mkDerefOff WordRep arg1 fixedHdrSize),
885 CAssign sn2 (mkDerefOff WordRep arg2 fixedHdrSize),
886 CMachOpStmt (Just res) MO_Nat_Eq [sn1,sn2] Nothing
889 -- #define addrToHValuezh(r,a) r=(P_)a
890 dscCOpStmt [res] AddrToHValueOp [arg] vols
894 -- #define dataToTagzh(r,a) r=(GET_TAG(((StgClosure *)a)->header.info))
895 dscCOpStmt [res] DataToTagOp [arg] vols
896 = mkTemps [PtrRep, WordRep] `thenFlt` \ [t_infoptr, t_theword] ->
897 mkHalfWord_HIADDR res t_theword `thenFlt` \ select_ops ->
898 (returnFlt . CSequential) [
899 CAssign t_infoptr (mkDerefOff PtrRep arg 0),
900 CAssign t_theword (mkDerefOff WordRep t_infoptr (-1)),
905 {- Freezing arrays-of-ptrs requires changing an info table, for the
906 benefit of the generational collector. It needs to scavenge mutable
907 objects, even if they are in old space. When they become immutable,
908 they can be removed from this scavenge list. -}
910 -- #define unsafeFreezzeArrayzh(r,a) \
912 -- SET_INFO((StgClosure *)a,&stg_MUT_ARR_PTRS_FROZEN_info); \
915 dscCOpStmt [res] UnsafeFreezeArrayOp [arg] vols
916 = (returnFlt . CSequential) [
917 CAssign (mkDerefOff PtrRep arg 0) (CLbl mkMAP_FROZEN_infoLabel PtrRep),
921 -- #define unsafeFreezzeByteArrayzh(r,a) r=(a)
922 dscCOpStmt [res] UnsafeFreezeByteArrayOp [arg] vols
926 -- This ought to be trivial, but it's difficult to insert the casts
927 -- required to keep the C compiler happy.
928 dscCOpStmt [r] AddrRemOp [a1,a2] vols
929 = mkTemp WordRep `thenFlt` \ a1casted ->
930 (returnFlt . CSequential) [
931 CMachOpStmt (Just a1casted) MO_NatP_to_NatU [a1] Nothing,
932 CMachOpStmt (Just r) MO_NatU_Rem [a1casted,a2] Nothing
935 -- not handled by translateOp because they need casts
936 dscCOpStmt [r] SllOp [a1,a2] vols
937 = translateOp_dyadic_cast1 MO_Nat_Shl r WordRep a1 a2 vols
938 dscCOpStmt [r] SrlOp [a1,a2] vols
939 = translateOp_dyadic_cast1 MO_Nat_Shr r WordRep a1 a2 vols
941 dscCOpStmt [r] ISllOp [a1,a2] vols
942 = translateOp_dyadic_cast1 MO_Nat_Shl r IntRep a1 a2 vols
943 dscCOpStmt [r] ISrlOp [a1,a2] vols
944 = translateOp_dyadic_cast1 MO_Nat_Shr r IntRep a1 a2 vols
945 dscCOpStmt [r] ISraOp [a1,a2] vols
946 = translateOp_dyadic_cast1 MO_Nat_Sar r IntRep a1 a2 vols
948 -- Reading/writing pointer arrays
950 dscCOpStmt [r] ReadArrayOp [obj,ix] vols = doReadPtrArrayOp r obj ix
951 dscCOpStmt [r] IndexArrayOp [obj,ix] vols = doReadPtrArrayOp r obj ix
952 dscCOpStmt [] WriteArrayOp [obj,ix,v] vols = doWritePtrArrayOp obj ix v
954 -- IndexXXXoffForeignObj
956 dscCOpStmt [r] IndexOffForeignObjOp_Char [a,i] vols = doIndexOffForeignObjOp (Just MO_8U_to_32U) Word8Rep r a i
957 dscCOpStmt [r] IndexOffForeignObjOp_WideChar [a,i] vols = doIndexOffForeignObjOp Nothing Word32Rep r a i
958 dscCOpStmt [r] IndexOffForeignObjOp_Int [a,i] vols = doIndexOffForeignObjOp Nothing IntRep r a i
959 dscCOpStmt [r] IndexOffForeignObjOp_Word [a,i] vols = doIndexOffForeignObjOp Nothing WordRep r a i
960 dscCOpStmt [r] IndexOffForeignObjOp_Addr [a,i] vols = doIndexOffForeignObjOp Nothing AddrRep r a i
961 dscCOpStmt [r] IndexOffForeignObjOp_Float [a,i] vols = doIndexOffForeignObjOp Nothing FloatRep r a i
962 dscCOpStmt [r] IndexOffForeignObjOp_Double [a,i] vols = doIndexOffForeignObjOp Nothing DoubleRep r a i
963 dscCOpStmt [r] IndexOffForeignObjOp_StablePtr [a,i] vols = doIndexOffForeignObjOp Nothing StablePtrRep r a i
965 dscCOpStmt [r] IndexOffForeignObjOp_Int8 [a,i] vols = doIndexOffForeignObjOp Nothing Int8Rep r a i
966 dscCOpStmt [r] IndexOffForeignObjOp_Int16 [a,i] vols = doIndexOffForeignObjOp Nothing Int16Rep r a i
967 dscCOpStmt [r] IndexOffForeignObjOp_Int32 [a,i] vols = doIndexOffForeignObjOp Nothing Int32Rep r a i
968 dscCOpStmt [r] IndexOffForeignObjOp_Int64 [a,i] vols = doIndexOffForeignObjOp Nothing Int64Rep r a i
970 dscCOpStmt [r] IndexOffForeignObjOp_Word8 [a,i] vols = doIndexOffForeignObjOp Nothing Word8Rep r a i
971 dscCOpStmt [r] IndexOffForeignObjOp_Word16 [a,i] vols = doIndexOffForeignObjOp Nothing Word16Rep r a i
972 dscCOpStmt [r] IndexOffForeignObjOp_Word32 [a,i] vols = doIndexOffForeignObjOp Nothing Word32Rep r a i
973 dscCOpStmt [r] IndexOffForeignObjOp_Word64 [a,i] vols = doIndexOffForeignObjOp Nothing Word64Rep r a i
977 dscCOpStmt [r] IndexOffAddrOp_Char [a,i] vols = doIndexOffAddrOp (Just MO_8U_to_32U) Word8Rep r a i
978 dscCOpStmt [r] IndexOffAddrOp_WideChar [a,i] vols = doIndexOffAddrOp Nothing Word32Rep r a i
979 dscCOpStmt [r] IndexOffAddrOp_Int [a,i] vols = doIndexOffAddrOp Nothing IntRep r a i
980 dscCOpStmt [r] IndexOffAddrOp_Word [a,i] vols = doIndexOffAddrOp Nothing WordRep r a i
981 dscCOpStmt [r] IndexOffAddrOp_Addr [a,i] vols = doIndexOffAddrOp Nothing AddrRep r a i
982 dscCOpStmt [r] IndexOffAddrOp_Float [a,i] vols = doIndexOffAddrOp Nothing FloatRep r a i
983 dscCOpStmt [r] IndexOffAddrOp_Double [a,i] vols = doIndexOffAddrOp Nothing DoubleRep r a i
984 dscCOpStmt [r] IndexOffAddrOp_StablePtr [a,i] vols = doIndexOffAddrOp Nothing StablePtrRep r a i
986 dscCOpStmt [r] IndexOffAddrOp_Int8 [a,i] vols = doIndexOffAddrOp Nothing Int8Rep r a i
987 dscCOpStmt [r] IndexOffAddrOp_Int16 [a,i] vols = doIndexOffAddrOp Nothing Int16Rep r a i
988 dscCOpStmt [r] IndexOffAddrOp_Int32 [a,i] vols = doIndexOffAddrOp Nothing Int32Rep r a i
989 dscCOpStmt [r] IndexOffAddrOp_Int64 [a,i] vols = doIndexOffAddrOp Nothing Int64Rep r a i
991 dscCOpStmt [r] IndexOffAddrOp_Word8 [a,i] vols = doIndexOffAddrOp Nothing Word8Rep r a i
992 dscCOpStmt [r] IndexOffAddrOp_Word16 [a,i] vols = doIndexOffAddrOp Nothing Word16Rep r a i
993 dscCOpStmt [r] IndexOffAddrOp_Word32 [a,i] vols = doIndexOffAddrOp Nothing Word32Rep r a i
994 dscCOpStmt [r] IndexOffAddrOp_Word64 [a,i] vols = doIndexOffAddrOp Nothing Word64Rep r a i
996 -- ReadXXXoffAddr, which are identical, for our purposes, to IndexXXXoffAddr.
998 dscCOpStmt [r] ReadOffAddrOp_Char [a,i] vols = doIndexOffAddrOp (Just MO_8U_to_32U) Word8Rep r a i
999 dscCOpStmt [r] ReadOffAddrOp_WideChar [a,i] vols = doIndexOffAddrOp Nothing Word32Rep r a i
1000 dscCOpStmt [r] ReadOffAddrOp_Int [a,i] vols = doIndexOffAddrOp Nothing IntRep r a i
1001 dscCOpStmt [r] ReadOffAddrOp_Word [a,i] vols = doIndexOffAddrOp Nothing WordRep r a i
1002 dscCOpStmt [r] ReadOffAddrOp_Addr [a,i] vols = doIndexOffAddrOp Nothing AddrRep r a i
1003 dscCOpStmt [r] ReadOffAddrOp_Float [a,i] vols = doIndexOffAddrOp Nothing FloatRep r a i
1004 dscCOpStmt [r] ReadOffAddrOp_Double [a,i] vols = doIndexOffAddrOp Nothing DoubleRep r a i
1005 dscCOpStmt [r] ReadOffAddrOp_StablePtr [a,i] vols = doIndexOffAddrOp Nothing StablePtrRep r a i
1007 dscCOpStmt [r] ReadOffAddrOp_Int8 [a,i] vols = doIndexOffAddrOp Nothing Int8Rep r a i
1008 dscCOpStmt [r] ReadOffAddrOp_Int16 [a,i] vols = doIndexOffAddrOp Nothing Int16Rep r a i
1009 dscCOpStmt [r] ReadOffAddrOp_Int32 [a,i] vols = doIndexOffAddrOp Nothing Int32Rep r a i
1010 dscCOpStmt [r] ReadOffAddrOp_Int64 [a,i] vols = doIndexOffAddrOp Nothing Int64Rep r a i
1012 dscCOpStmt [r] ReadOffAddrOp_Word8 [a,i] vols = doIndexOffAddrOp Nothing Word8Rep r a i
1013 dscCOpStmt [r] ReadOffAddrOp_Word16 [a,i] vols = doIndexOffAddrOp Nothing Word16Rep r a i
1014 dscCOpStmt [r] ReadOffAddrOp_Word32 [a,i] vols = doIndexOffAddrOp Nothing Word32Rep r a i
1015 dscCOpStmt [r] ReadOffAddrOp_Word64 [a,i] vols = doIndexOffAddrOp Nothing Word64Rep r a i
1019 dscCOpStmt [r] IndexByteArrayOp_Char [a,i] vols = doIndexByteArrayOp (Just MO_8U_to_32U) Word8Rep r a i
1020 dscCOpStmt [r] IndexByteArrayOp_WideChar [a,i] vols = doIndexByteArrayOp Nothing Word32Rep r a i
1021 dscCOpStmt [r] IndexByteArrayOp_Int [a,i] vols = doIndexByteArrayOp Nothing IntRep r a i
1022 dscCOpStmt [r] IndexByteArrayOp_Word [a,i] vols = doIndexByteArrayOp Nothing WordRep r a i
1023 dscCOpStmt [r] IndexByteArrayOp_Addr [a,i] vols = doIndexByteArrayOp Nothing AddrRep r a i
1024 dscCOpStmt [r] IndexByteArrayOp_Float [a,i] vols = doIndexByteArrayOp Nothing FloatRep r a i
1025 dscCOpStmt [r] IndexByteArrayOp_Double [a,i] vols = doIndexByteArrayOp Nothing DoubleRep r a i
1026 dscCOpStmt [r] IndexByteArrayOp_StablePtr [a,i] vols = doIndexByteArrayOp Nothing StablePtrRep r a i
1028 dscCOpStmt [r] IndexByteArrayOp_Int8 [a,i] vols = doIndexByteArrayOp Nothing Int8Rep r a i
1029 dscCOpStmt [r] IndexByteArrayOp_Int16 [a,i] vols = doIndexByteArrayOp Nothing Int16Rep r a i
1030 dscCOpStmt [r] IndexByteArrayOp_Int32 [a,i] vols = doIndexByteArrayOp Nothing Int32Rep r a i
1031 dscCOpStmt [r] IndexByteArrayOp_Int64 [a,i] vols = doIndexByteArrayOp Nothing Int64Rep r a i
1033 dscCOpStmt [r] IndexByteArrayOp_Word8 [a,i] vols = doIndexByteArrayOp Nothing Word8Rep r a i
1034 dscCOpStmt [r] IndexByteArrayOp_Word16 [a,i] vols = doIndexByteArrayOp Nothing Word16Rep r a i
1035 dscCOpStmt [r] IndexByteArrayOp_Word32 [a,i] vols = doIndexByteArrayOp Nothing Word32Rep r a i
1036 dscCOpStmt [r] IndexByteArrayOp_Word64 [a,i] vols = doIndexByteArrayOp Nothing Word64Rep r a i
1038 -- ReadXXXArray, identical to IndexXXXArray.
1040 dscCOpStmt [r] ReadByteArrayOp_Char [a,i] vols = doIndexByteArrayOp (Just MO_8U_to_32U) Word8Rep r a i
1041 dscCOpStmt [r] ReadByteArrayOp_WideChar [a,i] vols = doIndexByteArrayOp Nothing Word32Rep r a i
1042 dscCOpStmt [r] ReadByteArrayOp_Int [a,i] vols = doIndexByteArrayOp Nothing IntRep r a i
1043 dscCOpStmt [r] ReadByteArrayOp_Word [a,i] vols = doIndexByteArrayOp Nothing WordRep r a i
1044 dscCOpStmt [r] ReadByteArrayOp_Addr [a,i] vols = doIndexByteArrayOp Nothing AddrRep r a i
1045 dscCOpStmt [r] ReadByteArrayOp_Float [a,i] vols = doIndexByteArrayOp Nothing FloatRep r a i
1046 dscCOpStmt [r] ReadByteArrayOp_Double [a,i] vols = doIndexByteArrayOp Nothing DoubleRep r a i
1047 dscCOpStmt [r] ReadByteArrayOp_StablePtr [a,i] vols = doIndexByteArrayOp Nothing StablePtrRep r a i
1049 dscCOpStmt [r] ReadByteArrayOp_Int8 [a,i] vols = doIndexByteArrayOp Nothing Int8Rep r a i
1050 dscCOpStmt [r] ReadByteArrayOp_Int16 [a,i] vols = doIndexByteArrayOp Nothing Int16Rep r a i
1051 dscCOpStmt [r] ReadByteArrayOp_Int32 [a,i] vols = doIndexByteArrayOp Nothing Int32Rep r a i
1052 dscCOpStmt [r] ReadByteArrayOp_Int64 [a,i] vols = doIndexByteArrayOp Nothing Int64Rep r a i
1054 dscCOpStmt [r] ReadByteArrayOp_Word8 [a,i] vols = doIndexByteArrayOp Nothing Word8Rep r a i
1055 dscCOpStmt [r] ReadByteArrayOp_Word16 [a,i] vols = doIndexByteArrayOp Nothing Word16Rep r a i
1056 dscCOpStmt [r] ReadByteArrayOp_Word32 [a,i] vols = doIndexByteArrayOp Nothing Word32Rep r a i
1057 dscCOpStmt [r] ReadByteArrayOp_Word64 [a,i] vols = doIndexByteArrayOp Nothing Word64Rep r a i
1061 dscCOpStmt [] WriteOffAddrOp_Char [a,i,x] vols = doWriteOffAddrOp (Just MO_32U_to_8U) Word8Rep a i x
1062 dscCOpStmt [] WriteOffAddrOp_WideChar [a,i,x] vols = doWriteOffAddrOp Nothing Word32Rep a i x
1063 dscCOpStmt [] WriteOffAddrOp_Int [a,i,x] vols = doWriteOffAddrOp Nothing IntRep a i x
1064 dscCOpStmt [] WriteOffAddrOp_Word [a,i,x] vols = doWriteOffAddrOp Nothing WordRep a i x
1065 dscCOpStmt [] WriteOffAddrOp_Addr [a,i,x] vols = doWriteOffAddrOp Nothing AddrRep a i x
1066 dscCOpStmt [] WriteOffAddrOp_Float [a,i,x] vols = doWriteOffAddrOp Nothing FloatRep a i x
1067 dscCOpStmt [] WriteOffAddrOp_ForeignObj [a,i,x] vols = doWriteOffAddrOp Nothing ForeignObjRep a i x
1068 dscCOpStmt [] WriteOffAddrOp_Double [a,i,x] vols = doWriteOffAddrOp Nothing DoubleRep a i x
1069 dscCOpStmt [] WriteOffAddrOp_StablePtr [a,i,x] vols = doWriteOffAddrOp Nothing StablePtrRep a i x
1071 dscCOpStmt [] WriteOffAddrOp_Int8 [a,i,x] vols = doWriteOffAddrOp Nothing Int8Rep a i x
1072 dscCOpStmt [] WriteOffAddrOp_Int16 [a,i,x] vols = doWriteOffAddrOp Nothing Int16Rep a i x
1073 dscCOpStmt [] WriteOffAddrOp_Int32 [a,i,x] vols = doWriteOffAddrOp Nothing Int32Rep a i x
1074 dscCOpStmt [] WriteOffAddrOp_Int64 [a,i,x] vols = doWriteOffAddrOp Nothing Int64Rep a i x
1076 dscCOpStmt [] WriteOffAddrOp_Word8 [a,i,x] vols = doWriteOffAddrOp Nothing Word8Rep a i x
1077 dscCOpStmt [] WriteOffAddrOp_Word16 [a,i,x] vols = doWriteOffAddrOp Nothing Word16Rep a i x
1078 dscCOpStmt [] WriteOffAddrOp_Word32 [a,i,x] vols = doWriteOffAddrOp Nothing Word32Rep a i x
1079 dscCOpStmt [] WriteOffAddrOp_Word64 [a,i,x] vols = doWriteOffAddrOp Nothing Word64Rep a i x
1083 dscCOpStmt [] WriteByteArrayOp_Char [a,i,x] vols = doWriteByteArrayOp (Just MO_32U_to_8U) Word8Rep a i x
1084 dscCOpStmt [] WriteByteArrayOp_WideChar [a,i,x] vols = doWriteByteArrayOp Nothing Word32Rep a i x
1085 dscCOpStmt [] WriteByteArrayOp_Int [a,i,x] vols = doWriteByteArrayOp Nothing IntRep a i x
1086 dscCOpStmt [] WriteByteArrayOp_Word [a,i,x] vols = doWriteByteArrayOp Nothing WordRep a i x
1087 dscCOpStmt [] WriteByteArrayOp_Addr [a,i,x] vols = doWriteByteArrayOp Nothing AddrRep a i x
1088 dscCOpStmt [] WriteByteArrayOp_Float [a,i,x] vols = doWriteByteArrayOp Nothing FloatRep a i x
1089 dscCOpStmt [] WriteByteArrayOp_Double [a,i,x] vols = doWriteByteArrayOp Nothing DoubleRep a i x
1090 dscCOpStmt [] WriteByteArrayOp_StablePtr [a,i,x] vols = doWriteByteArrayOp Nothing StablePtrRep a i x
1092 dscCOpStmt [] WriteByteArrayOp_Int8 [a,i,x] vols = doWriteByteArrayOp Nothing Int8Rep a i x
1093 dscCOpStmt [] WriteByteArrayOp_Int16 [a,i,x] vols = doWriteByteArrayOp Nothing Int16Rep a i x
1094 dscCOpStmt [] WriteByteArrayOp_Int32 [a,i,x] vols = doWriteByteArrayOp Nothing Int32Rep a i x
1095 dscCOpStmt [] WriteByteArrayOp_Int64 [a,i,x] vols = doWriteByteArrayOp Nothing Int64Rep a i x
1097 dscCOpStmt [] WriteByteArrayOp_Word8 [a,i,x] vols = doWriteByteArrayOp Nothing Word8Rep a i x
1098 dscCOpStmt [] WriteByteArrayOp_Word16 [a,i,x] vols = doWriteByteArrayOp Nothing Word16Rep a i x
1099 dscCOpStmt [] WriteByteArrayOp_Word32 [a,i,x] vols = doWriteByteArrayOp Nothing Word32Rep a i x
1100 dscCOpStmt [] WriteByteArrayOp_Word64 [a,i,x] vols = doWriteByteArrayOp Nothing Word64Rep a i x
1103 -- Handle all others as simply as possible.
1104 dscCOpStmt ress op args vols
1105 = case translateOp ress op args of
1107 -> pprPanic "dscCOpStmt: can't translate PrimOp" (ppr op)
1108 Just (maybe_res, mop, args)
1110 CMachOpStmt maybe_res mop args
1111 (if isDefinitelyInlineMachOp mop then Nothing else Just vols)
1114 -- Native word signless ops
1116 translateOp [r] IntAddOp [a1,a2] = Just (Just r, MO_Nat_Add, [a1,a2])
1117 translateOp [r] IntSubOp [a1,a2] = Just (Just r, MO_Nat_Sub, [a1,a2])
1118 translateOp [r] WordAddOp [a1,a2] = Just (Just r, MO_Nat_Add, [a1,a2])
1119 translateOp [r] WordSubOp [a1,a2] = Just (Just r, MO_Nat_Sub, [a1,a2])
1120 translateOp [r] AddrAddOp [a1,a2] = Just (Just r, MO_Nat_Add, [a1,a2])
1121 translateOp [r] AddrSubOp [a1,a2] = Just (Just r, MO_Nat_Sub, [a1,a2])
1123 translateOp [r] IntEqOp [a1,a2] = Just (Just r, MO_Nat_Eq, [a1,a2])
1124 translateOp [r] IntNeOp [a1,a2] = Just (Just r, MO_Nat_Ne, [a1,a2])
1125 translateOp [r] WordEqOp [a1,a2] = Just (Just r, MO_Nat_Eq, [a1,a2])
1126 translateOp [r] WordNeOp [a1,a2] = Just (Just r, MO_Nat_Ne, [a1,a2])
1127 translateOp [r] AddrEqOp [a1,a2] = Just (Just r, MO_Nat_Eq, [a1,a2])
1128 translateOp [r] AddrNeOp [a1,a2] = Just (Just r, MO_Nat_Ne, [a1,a2])
1130 translateOp [r] AndOp [a1,a2] = Just (Just r, MO_Nat_And, [a1,a2])
1131 translateOp [r] OrOp [a1,a2] = Just (Just r, MO_Nat_Or, [a1,a2])
1132 translateOp [r] XorOp [a1,a2] = Just (Just r, MO_Nat_Xor, [a1,a2])
1133 translateOp [r] NotOp [a1] = Just (Just r, MO_Nat_Not, [a1])
1135 -- Native word signed ops
1137 translateOp [r] IntMulOp [a1,a2] = Just (Just r, MO_NatS_Mul, [a1,a2])
1138 translateOp [r] IntMulMayOfloOp [a1,a2] = Just (Just r, MO_NatS_MulMayOflo, [a1,a2])
1139 translateOp [r] IntQuotOp [a1,a2] = Just (Just r, MO_NatS_Quot, [a1,a2])
1140 translateOp [r] IntRemOp [a1,a2] = Just (Just r, MO_NatS_Rem, [a1,a2])
1141 translateOp [r] IntNegOp [a1] = Just (Just r, MO_NatS_Neg, [a1])
1143 translateOp [r] IntGeOp [a1,a2] = Just (Just r, MO_NatS_Ge, [a1,a2])
1144 translateOp [r] IntLeOp [a1,a2] = Just (Just r, MO_NatS_Le, [a1,a2])
1145 translateOp [r] IntGtOp [a1,a2] = Just (Just r, MO_NatS_Gt, [a1,a2])
1146 translateOp [r] IntLtOp [a1,a2] = Just (Just r, MO_NatS_Lt, [a1,a2])
1149 -- Native word unsigned ops
1151 translateOp [r] WordGeOp [a1,a2] = Just (Just r, MO_NatU_Ge, [a1,a2])
1152 translateOp [r] WordLeOp [a1,a2] = Just (Just r, MO_NatU_Le, [a1,a2])
1153 translateOp [r] WordGtOp [a1,a2] = Just (Just r, MO_NatU_Gt, [a1,a2])
1154 translateOp [r] WordLtOp [a1,a2] = Just (Just r, MO_NatU_Lt, [a1,a2])
1156 translateOp [r] WordMulOp [a1,a2] = Just (Just r, MO_NatU_Mul, [a1,a2])
1157 translateOp [r] WordQuotOp [a1,a2] = Just (Just r, MO_NatU_Quot, [a1,a2])
1158 translateOp [r] WordRemOp [a1,a2] = Just (Just r, MO_NatU_Rem, [a1,a2])
1160 translateOp [r] AddrGeOp [a1,a2] = Just (Just r, MO_NatU_Ge, [a1,a2])
1161 translateOp [r] AddrLeOp [a1,a2] = Just (Just r, MO_NatU_Le, [a1,a2])
1162 translateOp [r] AddrGtOp [a1,a2] = Just (Just r, MO_NatU_Gt, [a1,a2])
1163 translateOp [r] AddrLtOp [a1,a2] = Just (Just r, MO_NatU_Lt, [a1,a2])
1165 -- 32-bit unsigned ops
1167 translateOp [r] CharEqOp [a1,a2] = Just (Just r, MO_32U_Eq, [a1,a2])
1168 translateOp [r] CharNeOp [a1,a2] = Just (Just r, MO_32U_Ne, [a1,a2])
1169 translateOp [r] CharGeOp [a1,a2] = Just (Just r, MO_32U_Ge, [a1,a2])
1170 translateOp [r] CharLeOp [a1,a2] = Just (Just r, MO_32U_Le, [a1,a2])
1171 translateOp [r] CharGtOp [a1,a2] = Just (Just r, MO_32U_Gt, [a1,a2])
1172 translateOp [r] CharLtOp [a1,a2] = Just (Just r, MO_32U_Lt, [a1,a2])
1176 translateOp [r] DoubleEqOp [a1,a2] = Just (Just r, MO_Dbl_Eq, [a1,a2])
1177 translateOp [r] DoubleNeOp [a1,a2] = Just (Just r, MO_Dbl_Ne, [a1,a2])
1178 translateOp [r] DoubleGeOp [a1,a2] = Just (Just r, MO_Dbl_Ge, [a1,a2])
1179 translateOp [r] DoubleLeOp [a1,a2] = Just (Just r, MO_Dbl_Le, [a1,a2])
1180 translateOp [r] DoubleGtOp [a1,a2] = Just (Just r, MO_Dbl_Gt, [a1,a2])
1181 translateOp [r] DoubleLtOp [a1,a2] = Just (Just r, MO_Dbl_Lt, [a1,a2])
1183 translateOp [r] DoubleAddOp [a1,a2] = Just (Just r, MO_Dbl_Add, [a1,a2])
1184 translateOp [r] DoubleSubOp [a1,a2] = Just (Just r, MO_Dbl_Sub, [a1,a2])
1185 translateOp [r] DoubleMulOp [a1,a2] = Just (Just r, MO_Dbl_Mul, [a1,a2])
1186 translateOp [r] DoubleDivOp [a1,a2] = Just (Just r, MO_Dbl_Div, [a1,a2])
1187 translateOp [r] DoublePowerOp [a1,a2] = Just (Just r, MO_Dbl_Pwr, [a1,a2])
1189 translateOp [r] DoubleSinOp [a1] = Just (Just r, MO_Dbl_Sin, [a1])
1190 translateOp [r] DoubleCosOp [a1] = Just (Just r, MO_Dbl_Cos, [a1])
1191 translateOp [r] DoubleTanOp [a1] = Just (Just r, MO_Dbl_Tan, [a1])
1192 translateOp [r] DoubleSinhOp [a1] = Just (Just r, MO_Dbl_Sinh, [a1])
1193 translateOp [r] DoubleCoshOp [a1] = Just (Just r, MO_Dbl_Cosh, [a1])
1194 translateOp [r] DoubleTanhOp [a1] = Just (Just r, MO_Dbl_Tanh, [a1])
1195 translateOp [r] DoubleAsinOp [a1] = Just (Just r, MO_Dbl_Asin, [a1])
1196 translateOp [r] DoubleAcosOp [a1] = Just (Just r, MO_Dbl_Acos, [a1])
1197 translateOp [r] DoubleAtanOp [a1] = Just (Just r, MO_Dbl_Atan, [a1])
1198 translateOp [r] DoubleLogOp [a1] = Just (Just r, MO_Dbl_Log, [a1])
1199 translateOp [r] DoubleExpOp [a1] = Just (Just r, MO_Dbl_Exp, [a1])
1200 translateOp [r] DoubleSqrtOp [a1] = Just (Just r, MO_Dbl_Sqrt, [a1])
1201 translateOp [r] DoubleNegOp [a1] = Just (Just r, MO_Dbl_Neg, [a1])
1205 translateOp [r] FloatEqOp [a1,a2] = Just (Just r, MO_Flt_Eq, [a1,a2])
1206 translateOp [r] FloatNeOp [a1,a2] = Just (Just r, MO_Flt_Ne, [a1,a2])
1207 translateOp [r] FloatGeOp [a1,a2] = Just (Just r, MO_Flt_Ge, [a1,a2])
1208 translateOp [r] FloatLeOp [a1,a2] = Just (Just r, MO_Flt_Le, [a1,a2])
1209 translateOp [r] FloatGtOp [a1,a2] = Just (Just r, MO_Flt_Gt, [a1,a2])
1210 translateOp [r] FloatLtOp [a1,a2] = Just (Just r, MO_Flt_Lt, [a1,a2])
1212 translateOp [r] FloatAddOp [a1,a2] = Just (Just r, MO_Flt_Add, [a1,a2])
1213 translateOp [r] FloatSubOp [a1,a2] = Just (Just r, MO_Flt_Sub, [a1,a2])
1214 translateOp [r] FloatMulOp [a1,a2] = Just (Just r, MO_Flt_Mul, [a1,a2])
1215 translateOp [r] FloatDivOp [a1,a2] = Just (Just r, MO_Flt_Div, [a1,a2])
1216 translateOp [r] FloatPowerOp [a1,a2] = Just (Just r, MO_Flt_Pwr, [a1,a2])
1218 translateOp [r] FloatSinOp [a1] = Just (Just r, MO_Flt_Sin, [a1])
1219 translateOp [r] FloatCosOp [a1] = Just (Just r, MO_Flt_Cos, [a1])
1220 translateOp [r] FloatTanOp [a1] = Just (Just r, MO_Flt_Tan, [a1])
1221 translateOp [r] FloatSinhOp [a1] = Just (Just r, MO_Flt_Sinh, [a1])
1222 translateOp [r] FloatCoshOp [a1] = Just (Just r, MO_Flt_Cosh, [a1])
1223 translateOp [r] FloatTanhOp [a1] = Just (Just r, MO_Flt_Tanh, [a1])
1224 translateOp [r] FloatAsinOp [a1] = Just (Just r, MO_Flt_Asin, [a1])
1225 translateOp [r] FloatAcosOp [a1] = Just (Just r, MO_Flt_Acos, [a1])
1226 translateOp [r] FloatAtanOp [a1] = Just (Just r, MO_Flt_Atan, [a1])
1227 translateOp [r] FloatLogOp [a1] = Just (Just r, MO_Flt_Log, [a1])
1228 translateOp [r] FloatExpOp [a1] = Just (Just r, MO_Flt_Exp, [a1])
1229 translateOp [r] FloatSqrtOp [a1] = Just (Just r, MO_Flt_Sqrt, [a1])
1230 translateOp [r] FloatNegOp [a1] = Just (Just r, MO_Flt_Neg, [a1])
1234 translateOp [r] Int2DoubleOp [a1] = Just (Just r, MO_NatS_to_Dbl, [a1])
1235 translateOp [r] Double2IntOp [a1] = Just (Just r, MO_Dbl_to_NatS, [a1])
1237 translateOp [r] Int2FloatOp [a1] = Just (Just r, MO_NatS_to_Flt, [a1])
1238 translateOp [r] Float2IntOp [a1] = Just (Just r, MO_Flt_to_NatS, [a1])
1240 translateOp [r] Float2DoubleOp [a1] = Just (Just r, MO_Flt_to_Dbl, [a1])
1241 translateOp [r] Double2FloatOp [a1] = Just (Just r, MO_Dbl_to_Flt, [a1])
1243 translateOp [r] Int2WordOp [a1] = Just (Just r, MO_NatS_to_NatU, [a1])
1244 translateOp [r] Word2IntOp [a1] = Just (Just r, MO_NatU_to_NatS, [a1])
1246 translateOp [r] Int2AddrOp [a1] = Just (Just r, MO_NatS_to_NatP, [a1])
1247 translateOp [r] Addr2IntOp [a1] = Just (Just r, MO_NatP_to_NatS, [a1])
1249 translateOp [r] OrdOp [a1] = Just (Just r, MO_32U_to_NatS, [a1])
1250 translateOp [r] ChrOp [a1] = Just (Just r, MO_NatS_to_32U, [a1])
1252 translateOp [r] Narrow8IntOp [a1] = Just (Just r, MO_8S_to_NatS, [a1])
1253 translateOp [r] Narrow16IntOp [a1] = Just (Just r, MO_16S_to_NatS, [a1])
1254 translateOp [r] Narrow32IntOp [a1] = Just (Just r, MO_32S_to_NatS, [a1])
1256 translateOp [r] Narrow8WordOp [a1] = Just (Just r, MO_8U_to_NatU, [a1])
1257 translateOp [r] Narrow16WordOp [a1] = Just (Just r, MO_16U_to_NatU, [a1])
1258 translateOp [r] Narrow32WordOp [a1] = Just (Just r, MO_32U_to_NatU, [a1])
1260 -- Word comparisons masquerading as more exotic things.
1262 translateOp [r] SameMutVarOp [a1,a2] = Just (Just r, MO_Nat_Eq, [a1,a2])
1263 translateOp [r] SameMVarOp [a1,a2] = Just (Just r, MO_Nat_Eq, [a1,a2])
1264 translateOp [r] SameMutableArrayOp [a1,a2] = Just (Just r, MO_Nat_Eq, [a1,a2])
1265 translateOp [r] SameMutableByteArrayOp [a1,a2] = Just (Just r, MO_Nat_Eq, [a1,a2])
1266 translateOp [r] EqForeignObj [a1,a2] = Just (Just r, MO_Nat_Eq, [a1,a2])
1267 translateOp [r] EqStablePtrOp [a1,a2] = Just (Just r, MO_Nat_Eq, [a1,a2])
1269 translateOp _ _ _ = Nothing