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"
20 #include "../includes/config.h"
23 import CLabel ( mkMAP_FROZEN_infoLabel )
24 import Digraph ( stronglyConnComp, SCC(..) )
25 import DataCon ( fIRST_TAG, ConTag )
26 import Literal ( literalPrimRep, mkMachWord, mkMachInt )
27 import PrimRep ( getPrimRepSize, PrimRep(..) )
28 import PrimOp ( PrimOp(..) )
29 import MachOp ( MachOp(..), isDefinitelyInlineMachOp )
30 import Unique ( Unique{-instance Eq-} )
31 import UniqSupply ( uniqFromSupply, uniqsFromSupply, splitUniqSupply,
33 import CmdLineOpts ( opt_EmitCExternDecls, opt_Unregisterised )
34 import ForeignCall ( ForeignCall(..), CCallSpec(..),
35 isDynamicTarget, isCasmTarget )
36 import StgSyn ( StgOp(..) )
37 import SMRep ( arrPtrsHdrSize, arrWordsHdrSize, fixedHdrSize )
39 import Panic ( panic )
41 import Constants ( wORD_SIZE, wORD_SIZE_IN_BITS )
43 import Maybe ( isJust )
48 Check if there is any real code in some Abstract~C. If so, return it
49 (@Just ...@); otherwise, return @Nothing@. Don't be too strict!
51 It returns the "reduced" code in the Just part so that the work of
52 discarding AbsCNops isn't lost, and so that if the caller uses
53 the reduced version there's less danger of a big tree of AbsCNops getting
54 materialised and causing a space leak.
57 nonemptyAbsC :: AbstractC -> Maybe AbstractC
58 nonemptyAbsC AbsCNop = Nothing
59 nonemptyAbsC (AbsCStmts s1 s2) = case (nonemptyAbsC s1) of
60 Nothing -> nonemptyAbsC s2
61 Just x -> Just (AbsCStmts x s2)
62 nonemptyAbsC s@(CSimultaneous c) = case (nonemptyAbsC c) of
65 nonemptyAbsC other = Just other
69 mkAbstractCs :: [AbstractC] -> AbstractC
70 mkAbstractCs [] = AbsCNop
71 mkAbstractCs cs = foldr1 mkAbsCStmts cs
73 -- for fiddling around w/ killing off AbsCNops ... (ToDo)
74 mkAbsCStmts :: AbstractC -> AbstractC -> AbstractC
75 mkAbsCStmts AbsCNop c = c
76 mkAbsCStmts c AbsCNop = c
77 mkAbsCStmts c1 c2 = c1 `AbsCStmts` c2
79 {- Discarded SLPJ June 95; it calls nonemptyAbsC too much!
80 = case (case (nonemptyAbsC abc2) of
82 Just d2 -> d2) of { abc2b ->
84 case (nonemptyAbsC abc1) of {
86 Just d1 -> AbsCStmts d1 abc2b
91 Get the sho' 'nuff statements out of an @AbstractC@.
93 mkAbsCStmtList :: AbstractC -> [AbstractC]
95 mkAbsCStmtList absC = mkAbsCStmtList' absC []
97 -- Optimised a la foldr/build!
99 mkAbsCStmtList' AbsCNop r = r
101 mkAbsCStmtList' (AbsCStmts s1 s2) r
102 = mkAbsCStmtList' s1 (mkAbsCStmtList' s2 r)
104 mkAbsCStmtList' s@(CSimultaneous c) r
105 = if null (mkAbsCStmtList c) then r else s : r
107 mkAbsCStmtList' other r = other : r
111 mkAlgAltsCSwitch :: CAddrMode -> [(ConTag, AbstractC)] -> AbstractC -> AbstractC
113 mkAlgAltsCSwitch scrutinee tagged_alts deflt_absc
114 | isJust (nonemptyAbsC deflt_absc)
115 = CSwitch scrutinee (adjust tagged_alts) deflt_absc
117 = CSwitch scrutinee (adjust rest) first_alt
119 -- it's ok to convert one of the alts into a default if we don't already have
120 -- one, because this is an algebraic case and we're guaranteed that the tag
121 -- will match one of the branches.
122 ((_,first_alt):rest) = tagged_alts
124 -- Adjust the tags in the switch to start at zero.
125 -- This is the convention used by primitive ops which return algebraic
126 -- data types. Why? Because for two-constructor types, zero is faster
127 -- to create and distinguish from 1 than are 1 and 2.
129 -- We also need to convert to Literals to keep the CSwitch happy
131 = [ (mkMachWord (toInteger (tag - fIRST_TAG)), abs_c)
132 | (tag, abs_c) <- tagged_alts ]
135 %************************************************************************
137 \subsubsection[AbsCUtils-kinds-from-MagicIds]{Kinds from MagicIds}
139 %************************************************************************
142 magicIdPrimRep BaseReg = PtrRep
143 magicIdPrimRep (VanillaReg kind _) = kind
144 magicIdPrimRep (FloatReg _) = FloatRep
145 magicIdPrimRep (DoubleReg _) = DoubleRep
146 magicIdPrimRep (LongReg kind _) = kind
147 magicIdPrimRep Sp = PtrRep
148 magicIdPrimRep SpLim = PtrRep
149 magicIdPrimRep Hp = PtrRep
150 magicIdPrimRep HpLim = PtrRep
151 magicIdPrimRep CurCostCentre = CostCentreRep
152 magicIdPrimRep VoidReg = VoidRep
153 magicIdPrimRep CurrentTSO = PtrRep
154 magicIdPrimRep CurrentNursery = PtrRep
155 magicIdPrimRep HpAlloc = WordRep
158 %************************************************************************
160 \subsection[AbsCUtils-amode-kinds]{Finding @PrimitiveKinds@ of amodes}
162 %************************************************************************
164 See also the return conventions for unboxed things; currently living
165 in @CgCon@ (next to the constructor return conventions).
167 ToDo: tiny tweaking may be in order
169 getAmodeRep :: CAddrMode -> PrimRep
171 getAmodeRep (CVal _ kind) = kind
172 getAmodeRep (CAddr _) = PtrRep
173 getAmodeRep (CReg magic_id) = magicIdPrimRep magic_id
174 getAmodeRep (CTemp uniq kind) = kind
175 getAmodeRep (CLbl _ kind) = kind
176 getAmodeRep (CCharLike _) = PtrRep
177 getAmodeRep (CIntLike _) = PtrRep
178 getAmodeRep (CLit lit) = literalPrimRep lit
179 getAmodeRep (CMacroExpr kind _ _) = kind
180 getAmodeRep (CJoinPoint _) = panic "getAmodeRep:CJoinPoint"
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 entry)
324 = flatAbsC entry `thenFlt` \ (entry_heres, entry_tops) ->
325 returnFlt (AbsCNop, mkAbstractCs [entry_tops,
326 CClosureInfoAndCode cl_info entry_heres]
329 flatAbsC (CCodeBlock lbl abs_C)
330 = flatAbsC abs_C `thenFlt` \ (absC_heres, absC_tops) ->
331 returnFlt (AbsCNop, absC_tops `mkAbsCStmts` CCodeBlock lbl absC_heres)
333 flatAbsC (CRetDirect uniq slow_code srt liveness)
334 = flatAbsC slow_code `thenFlt` \ (heres, tops) ->
336 mkAbstractCs [ tops, CRetDirect uniq heres srt liveness ])
338 flatAbsC (CSwitch discrim alts deflt)
339 = mapAndUnzipFlt flat_alt alts `thenFlt` \ (flat_alts, flat_alts_tops) ->
340 flatAbsC deflt `thenFlt` \ (flat_def_alt, def_tops) ->
342 CSwitch discrim flat_alts flat_def_alt,
343 mkAbstractCs (def_tops : flat_alts_tops)
347 = flatAbsC absC `thenFlt` \ (alt_heres, alt_tops) ->
348 returnFlt ( (tag, alt_heres), alt_tops )
350 flatAbsC stmt@(COpStmt results (StgFCallOp (CCall ccall@(CCallSpec target _ _)) uniq) args _)
351 | is_dynamic -- Emit a typedef if its a dynamic call
352 || (opt_EmitCExternDecls && not (isCasmTarget target)) -- or we want extern decls
353 = returnFlt (stmt, CCallTypedef is_dynamic ccall uniq results args)
355 is_dynamic = isDynamicTarget target
357 flatAbsC stmt@(CSimultaneous abs_c)
358 = flatAbsC abs_c `thenFlt` \ (stmts_here, tops) ->
359 doSimultaneously stmts_here `thenFlt` \ new_stmts_here ->
360 returnFlt (new_stmts_here, tops)
362 flatAbsC stmt@(CCheck macro amodes code)
363 = flatAbsC code `thenFlt` \ (code_here, code_tops) ->
364 returnFlt (CCheck macro amodes code_here, code_tops)
366 -- the TICKY_CTR macro always needs to be hoisted out to the top level.
368 flatAbsC stmt@(CCallProfCtrMacro str amodes)
369 | str == FSLIT("TICK_CTR") = returnFlt (AbsCNop, stmt)
370 | otherwise = returnFlt (stmt, AbsCNop)
372 -- Some statements need no flattening at all:
373 flatAbsC stmt@(CMacroStmt macro amodes) = returnFlt (stmt, AbsCNop)
374 flatAbsC stmt@(CCallProfCCMacro str amodes) = returnFlt (stmt, AbsCNop)
375 flatAbsC stmt@(CAssign dest source) = returnFlt (stmt, AbsCNop)
376 flatAbsC stmt@(CJump target) = returnFlt (stmt, AbsCNop)
377 flatAbsC stmt@(CFallThrough target) = returnFlt (stmt, AbsCNop)
378 flatAbsC stmt@(CReturn target return_info) = returnFlt (stmt, AbsCNop)
379 flatAbsC stmt@(CInitHdr a b cc sz) = returnFlt (stmt, AbsCNop)
380 flatAbsC stmt@(CMachOpStmt res mop args m_vols) = returnFlt (stmt, AbsCNop)
381 flatAbsC stmt@(COpStmt results (StgFCallOp _ _) args vol_regs)
382 = returnFlt (stmt, AbsCNop)
383 flatAbsC stmt@(COpStmt results (StgPrimOp op) args vol_regs)
384 = dscCOpStmt (filter non_void_amode results) op
385 (filter non_void_amode args) vol_regs
388 COpStmt _ _ _ _ -> panic "flatAbsC - dscCOpStmt" -- make sure we don't loop!
389 other -> flatAbsC other
391 A gruesome hack for printing the names of inline primops when they
396 = getUniqFlt `thenFlt` \ uu ->
397 flatAbsC (CSequential [moo uu (showSDoc (ppr op)), xxx])
403 (CCall (CCallSpec (CasmTarget (mkFastString (mktxt op_str)))
404 defaultCCallConv (PlaySafe False)))
410 = " asm(\"pushal;\"); printf(\"%%s\\n\",\"" ++ op_str ++ "\"); asm(\"popal\"); "
413 flatAbsC (CSequential abcs)
414 = mapAndUnzipFlt flatAbsC abcs `thenFlt` \ (inlines, tops) ->
415 returnFlt (CSequential inlines, foldr AbsCStmts AbsCNop tops)
418 -- Some statements only make sense at the top level, so we always float
419 -- them. This probably isn't necessary.
420 flatAbsC stmt@(CStaticClosure _ _ _ _) = returnFlt (AbsCNop, stmt)
421 flatAbsC stmt@(CClosureTbl _) = returnFlt (AbsCNop, stmt)
422 flatAbsC stmt@(CSRT _ _) = returnFlt (AbsCNop, stmt)
423 flatAbsC stmt@(CSRTDesc _ _ _ _ _) = 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 WordRep `thenFlt` \ t_hw_mask1 ->
611 mkTemp WordRep `thenFlt` \ t_hw_mask2 ->
613 hw_shift = mkIntCLit (wORD_SIZE_IN_BITS `quot` 2)
616 = CMachOpStmt t_hw_mask1
617 MO_Nat_Shl [CLit (mkMachWord 1), hw_shift] Nothing
619 = CMachOpStmt t_hw_mask2
620 MO_Nat_Sub [t_hw_mask1, CLit (mkMachWord 1)] Nothing
623 = CSequential [ a_hw_mask1, a_hw_mask2,
624 CMachOpStmt res MO_Nat_And [arg, t_hw_mask2] Nothing
627 = CMachOpStmt res MO_Nat_Shr [arg, hw_shift] Nothing
633 mkTemp :: PrimRep -> FlatM CAddrMode
635 = getUniqFlt `thenFlt` \ uniq -> returnFlt (CTemp uniq rep)
637 mkTemps = mapFlt mkTemp
639 -- Sigh. This is done in 3 seperate places. Should be
640 -- commoned up (here, in pprAbsC of COpStmt, and presumably
641 -- somewhere in the NCG).
643 = case getAmodeRep amode of
647 -- Helpers for translating various minor variants of array indexing.
649 mkDerefOff :: PrimRep -> CAddrMode -> Int -> CAddrMode
650 mkDerefOff rep base off
651 = CVal (CIndex base (CLit (mkMachInt (toInteger off))) rep) rep
653 mkNoDerefOff :: PrimRep -> CAddrMode -> Int -> CAddrMode
654 mkNoDerefOff rep base off
655 = CAddr (CIndex base (CLit (mkMachInt (toInteger off))) rep)
658 -- Generates an address as follows
659 -- base + sizeof(machine_word)*offw + sizeof(rep)*idx
660 mk_OSBI_addr :: Int -> PrimRep -> CAddrMode -> CAddrMode -> RegRelative
661 mk_OSBI_addr offw rep base idx
662 = CIndex (CAddr (CIndex base idx rep))
663 (CLit (mkMachWord (fromIntegral offw)))
666 mk_OSBI_ref :: Int -> PrimRep -> CAddrMode -> CAddrMode -> CAddrMode
667 mk_OSBI_ref offw rep base idx
668 = CVal (mk_OSBI_addr offw rep base idx) rep
671 doIndexOffForeignObjOp maybe_post_read_cast rep res addr idx
672 = mkBasicIndexedRead fixedHdrSize maybe_post_read_cast rep res addr idx
674 doIndexOffAddrOp maybe_post_read_cast rep res addr idx
675 = mkBasicIndexedRead 0 maybe_post_read_cast rep res addr idx
677 doIndexByteArrayOp maybe_post_read_cast rep res addr idx
678 = mkBasicIndexedRead arrWordsHdrSize maybe_post_read_cast rep res addr idx
680 doReadPtrArrayOp res addr idx
681 = mkBasicIndexedRead arrPtrsHdrSize Nothing PtrRep res addr idx
684 doWriteOffAddrOp maybe_pre_write_cast rep addr idx val
685 = mkBasicIndexedWrite 0 maybe_pre_write_cast rep addr idx val
687 doWriteByteArrayOp maybe_pre_write_cast rep addr idx val
688 = mkBasicIndexedWrite arrWordsHdrSize maybe_pre_write_cast rep addr idx val
690 doWritePtrArrayOp addr idx val
691 = mkBasicIndexedWrite arrPtrsHdrSize Nothing PtrRep addr idx val
695 mkBasicIndexedRead offw Nothing read_rep res base idx
697 CAssign res (mk_OSBI_ref offw read_rep base idx)
699 mkBasicIndexedRead offw (Just cast_to_mop) read_rep res base idx
700 = mkTemp read_rep `thenFlt` \ tmp ->
701 (returnFlt . CSequential) [
702 CAssign tmp (mk_OSBI_ref offw read_rep base idx),
703 CMachOpStmt res cast_to_mop [tmp] Nothing
706 mkBasicIndexedWrite offw Nothing write_rep base idx val
708 CAssign (mk_OSBI_ref offw write_rep base idx) val
710 mkBasicIndexedWrite offw (Just cast_to_mop) write_rep base idx val
711 = mkTemp write_rep `thenFlt` \ tmp ->
712 (returnFlt . CSequential) [
713 CMachOpStmt tmp cast_to_mop [val] Nothing,
714 CAssign (mk_OSBI_ref offw write_rep base idx) tmp
718 -- Simple dyadic op but one for which we need to cast first arg to
719 -- be sure of correctness
720 translateOp_dyadic_cast1 mop res cast_arg1_to arg1 arg2 vols
721 = mkTemp cast_arg1_to `thenFlt` \ arg1casted ->
722 (returnFlt . CSequential) [
723 CAssign arg1casted arg1,
724 CMachOpStmt res mop [arg1casted,arg2]
725 (if isDefinitelyInlineMachOp mop then Nothing else Just vols)
728 -- IA64 mangler doesn't place tables next to code
729 tablesNextToCode :: Bool
730 #ifdef ia64_TARGET_ARCH
731 tablesNextToCode = False
733 tablesNextToCode = not opt_Unregisterised
736 ------------------------------------------------------------------------------
738 -- This is the main top-level desugarer PrimOps into MachOps. First we
739 -- handle various awkward cases specially. The remaining easy cases are
740 -- then handled by translateOp, defined below.
743 dscCOpStmt :: [CAddrMode] -- Results
745 -> [CAddrMode] -- Arguments
746 -> [MagicId] -- Potentially volatile/live registers
747 -- (to save/restore around the op)
751 dscCOpStmt [res_r,res_c] IntAddCOp [aa,bb] vols
753 With some bit-twiddling, we can define int{Add,Sub}Czh portably in
754 C, and without needing any comparisons. This may not be the
755 fastest way to do it - if you have better code, please send it! --SDM
757 Return : r = a + b, c = 0 if no overflow, 1 on overflow.
759 We currently don't make use of the r value if c is != 0 (i.e.
760 overflow), we just convert to big integers and try again. This
761 could be improved by making r and c the correct values for
762 plugging into a new J#.
764 { r = ((I_)(a)) + ((I_)(b)); \
765 c = ((StgWord)(~(((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
766 >> (BITS_IN (I_) - 1); \
768 Wading through the mass of bracketry, it seems to reduce to:
769 c = ( (~(a^b)) & (a^r) ) >>unsigned (BITS_IN(I_)-1)
776 c = t4 >>unsigned BITS_IN(I_)-1
778 = mkTemps [IntRep,IntRep,IntRep,IntRep] `thenFlt` \ [t1,t2,t3,t4] ->
779 let bpw1 = mkIntCLit (wORD_SIZE_IN_BITS - 1) in
780 (returnFlt . CSequential) [
781 CMachOpStmt res_r MO_Nat_Add [aa,bb] Nothing,
782 CMachOpStmt t1 MO_Nat_Xor [aa,bb] Nothing,
783 CMachOpStmt t2 MO_Nat_Not [t1] Nothing,
784 CMachOpStmt t3 MO_Nat_Xor [aa,res_r] Nothing,
785 CMachOpStmt t4 MO_Nat_And [t2,t3] Nothing,
786 CMachOpStmt res_c MO_Nat_Shr [t4, bpw1] Nothing
790 dscCOpStmt [res_r,res_c] IntSubCOp [aa,bb] vols
792 #define subIntCzh(r,c,a,b) \
793 { r = ((I_)(a)) - ((I_)(b)); \
794 c = ((StgWord)((((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
795 >> (BITS_IN (I_) - 1); \
798 c = ((a^b) & (a^r)) >>unsigned (BITS_IN(I_)-1)
803 c = t3 >>unsigned BITS_IN(I_)-1
805 = mkTemps [IntRep,IntRep,IntRep] `thenFlt` \ [t1,t2,t3] ->
806 let bpw1 = mkIntCLit (wORD_SIZE_IN_BITS - 1) in
807 (returnFlt . CSequential) [
808 CMachOpStmt res_r MO_Nat_Sub [aa,bb] Nothing,
809 CMachOpStmt t1 MO_Nat_Xor [aa,bb] Nothing,
810 CMachOpStmt t2 MO_Nat_Xor [aa,res_r] Nothing,
811 CMachOpStmt t3 MO_Nat_And [t1,t2] Nothing,
812 CMachOpStmt res_c MO_Nat_Shr [t3, bpw1] Nothing
816 -- #define parzh(r,node) r = 1
817 dscCOpStmt [res] ParOp [arg] vols
819 (CAssign res (CLit (mkMachInt 1)))
821 -- #define readMutVarzh(r,a) r=(P_)(((StgMutVar *)(a))->var)
822 dscCOpStmt [res] ReadMutVarOp [mutv] vols
824 (CAssign res (mkDerefOff PtrRep mutv fixedHdrSize))
826 -- #define writeMutVarzh(a,v) (P_)(((StgMutVar *)(a))->var)=(v)
827 dscCOpStmt [] WriteMutVarOp [mutv,var] vols
829 (CAssign (mkDerefOff PtrRep mutv fixedHdrSize) var)
832 -- #define ForeignObj_CLOSURE_DATA(c) (((StgForeignObj *)c)->data)
833 -- #define foreignObjToAddrzh(r,fo) r=ForeignObj_CLOSURE_DATA(fo)
834 dscCOpStmt [res] ForeignObjToAddrOp [fo] vols
836 (CAssign res (mkDerefOff PtrRep fo fixedHdrSize))
838 -- #define writeForeignObjzh(res,datum) \
839 -- (ForeignObj_CLOSURE_DATA(res) = (P_)(datum))
840 dscCOpStmt [] WriteForeignObjOp [fo,addr] vols
842 (CAssign (mkDerefOff PtrRep fo fixedHdrSize) addr)
845 -- #define sizzeofByteArrayzh(r,a) \
846 -- r = (((StgArrWords *)(a))->words * sizeof(W_))
847 dscCOpStmt [res] SizeofByteArrayOp [arg] vols
848 = mkTemp WordRep `thenFlt` \ w ->
849 (returnFlt . CSequential) [
850 CAssign w (mkDerefOff WordRep arg fixedHdrSize),
851 CMachOpStmt w MO_NatU_Mul [w, mkIntCLit wORD_SIZE] (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 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 res MO_Nat_Eq [sn1,sn2] Nothing
889 dscCOpStmt [res] ReallyUnsafePtrEqualityOp [arg1,arg2] vols
890 = mkTemps [WordRep, WordRep] `thenFlt` \ [w1,w2] ->
891 (returnFlt . CSequential) [
892 CMachOpStmt w1 MO_NatP_to_NatU [arg1] Nothing,
893 CMachOpStmt w2 MO_NatP_to_NatU [arg2] Nothing,
894 CMachOpStmt res MO_Nat_Eq [w1,w2] Nothing{- because it's inline? -}
897 -- #define addrToHValuezh(r,a) r=(P_)a
898 dscCOpStmt [res] AddrToHValueOp [arg] vols
902 -- #define dataToTagzh(r,a) r=(GET_TAG(((StgClosure *)a)->header.info))
904 -- In the unregisterised case, we don't attempt to compute the location
905 -- of the tag halfword, just a macro. For this build, fixing on layout
906 -- info has only got drawbacks.
908 -- Should this arrangement deeply offend you for some reason, code which
909 -- computes the offset can be found below also.
912 dscCOpStmt [res] DataToTagOp [arg] vols
913 | not tablesNextToCode
914 = returnFlt (CMacroStmt DATA_TO_TAGZH [res,arg])
916 = mkTemps [PtrRep, WordRep] `thenFlt` \ [t_infoptr, t_theword] ->
917 mkHalfWord_HIADDR res t_theword `thenFlt` \ select_ops ->
918 (returnFlt . CSequential) [
919 CAssign t_infoptr (mkDerefOff PtrRep arg 0),
921 Get at the tag within the info table; two cases to consider:
923 - reversed info tables next to the entry point code;
924 one word above the end of the info table (which is
925 what t_infoptr is really pointing to).
926 - info tables with their entry points stored somewhere else,
927 which is how the unregisterised (nee TABLES_NEXT_TO_CODE)
930 The t_infoptr points to the start of the info table, so add
931 the length of the info table & subtract one word.
933 CAssign t_theword (mkDerefOff WordRep t_infoptr (-1)),
934 {- UNUSED - see above comment.
935 (if opt_Unregisterised then
943 {- Freezing arrays-of-ptrs requires changing an info table, for the
944 benefit of the generational collector. It needs to scavenge mutable
945 objects, even if they are in old space. When they become immutable,
946 they can be removed from this scavenge list. -}
948 -- #define unsafeFreezzeArrayzh(r,a) \
950 -- SET_INFO((StgClosure *)a,&stg_MUT_ARR_PTRS_FROZEN_info); \
953 dscCOpStmt [res] UnsafeFreezeArrayOp [arg] vols
954 = (returnFlt . CSequential) [
955 CAssign (mkDerefOff PtrRep arg 0) (CLbl mkMAP_FROZEN_infoLabel PtrRep),
959 -- #define unsafeFreezzeByteArrayzh(r,a) r=(a)
960 dscCOpStmt [res] UnsafeFreezeByteArrayOp [arg] vols
964 -- This ought to be trivial, but it's difficult to insert the casts
965 -- required to keep the C compiler happy.
966 dscCOpStmt [r] AddrRemOp [a1,a2] vols
967 = mkTemp WordRep `thenFlt` \ a1casted ->
968 (returnFlt . CSequential) [
969 CMachOpStmt a1casted MO_NatP_to_NatU [a1] Nothing,
970 CMachOpStmt r MO_NatU_Rem [a1casted,a2] Nothing
973 -- not handled by translateOp because they need casts
974 dscCOpStmt [r] SllOp [a1,a2] vols
975 = translateOp_dyadic_cast1 MO_Nat_Shl r WordRep a1 a2 vols
976 dscCOpStmt [r] SrlOp [a1,a2] vols
977 = translateOp_dyadic_cast1 MO_Nat_Shr r WordRep a1 a2 vols
979 dscCOpStmt [r] ISllOp [a1,a2] vols
980 = translateOp_dyadic_cast1 MO_Nat_Shl r IntRep a1 a2 vols
981 dscCOpStmt [r] ISrlOp [a1,a2] vols
982 = translateOp_dyadic_cast1 MO_Nat_Shr r IntRep a1 a2 vols
983 dscCOpStmt [r] ISraOp [a1,a2] vols
984 = translateOp_dyadic_cast1 MO_Nat_Sar r IntRep a1 a2 vols
986 -- Reading/writing pointer arrays
988 dscCOpStmt [r] ReadArrayOp [obj,ix] vols = doReadPtrArrayOp r obj ix
989 dscCOpStmt [r] IndexArrayOp [obj,ix] vols = doReadPtrArrayOp r obj ix
990 dscCOpStmt [] WriteArrayOp [obj,ix,v] vols = doWritePtrArrayOp obj ix v
992 -- IndexXXXoffForeignObj
994 dscCOpStmt [r] IndexOffForeignObjOp_Char [a,i] vols = doIndexOffForeignObjOp (Just MO_8U_to_32U) Word8Rep r a i
995 dscCOpStmt [r] IndexOffForeignObjOp_WideChar [a,i] vols = doIndexOffForeignObjOp Nothing Word32Rep r a i
996 dscCOpStmt [r] IndexOffForeignObjOp_Int [a,i] vols = doIndexOffForeignObjOp Nothing IntRep r a i
997 dscCOpStmt [r] IndexOffForeignObjOp_Word [a,i] vols = doIndexOffForeignObjOp Nothing WordRep r a i
998 dscCOpStmt [r] IndexOffForeignObjOp_Addr [a,i] vols = doIndexOffForeignObjOp Nothing AddrRep r a i
999 dscCOpStmt [r] IndexOffForeignObjOp_Float [a,i] vols = doIndexOffForeignObjOp Nothing FloatRep r a i
1000 dscCOpStmt [r] IndexOffForeignObjOp_Double [a,i] vols = doIndexOffForeignObjOp Nothing DoubleRep r a i
1001 dscCOpStmt [r] IndexOffForeignObjOp_StablePtr [a,i] vols = doIndexOffForeignObjOp Nothing StablePtrRep r a i
1003 dscCOpStmt [r] IndexOffForeignObjOp_Int8 [a,i] vols = doIndexOffForeignObjOp Nothing Int8Rep r a i
1004 dscCOpStmt [r] IndexOffForeignObjOp_Int16 [a,i] vols = doIndexOffForeignObjOp Nothing Int16Rep r a i
1005 dscCOpStmt [r] IndexOffForeignObjOp_Int32 [a,i] vols = doIndexOffForeignObjOp Nothing Int32Rep r a i
1006 dscCOpStmt [r] IndexOffForeignObjOp_Int64 [a,i] vols = doIndexOffForeignObjOp Nothing Int64Rep r a i
1008 dscCOpStmt [r] IndexOffForeignObjOp_Word8 [a,i] vols = doIndexOffForeignObjOp Nothing Word8Rep r a i
1009 dscCOpStmt [r] IndexOffForeignObjOp_Word16 [a,i] vols = doIndexOffForeignObjOp Nothing Word16Rep r a i
1010 dscCOpStmt [r] IndexOffForeignObjOp_Word32 [a,i] vols = doIndexOffForeignObjOp Nothing Word32Rep r a i
1011 dscCOpStmt [r] IndexOffForeignObjOp_Word64 [a,i] vols = doIndexOffForeignObjOp Nothing Word64Rep r a i
1015 dscCOpStmt [r] IndexOffAddrOp_Char [a,i] vols = doIndexOffAddrOp (Just MO_8U_to_32U) Word8Rep r a i
1016 dscCOpStmt [r] IndexOffAddrOp_WideChar [a,i] vols = doIndexOffAddrOp Nothing Word32Rep r a i
1017 dscCOpStmt [r] IndexOffAddrOp_Int [a,i] vols = doIndexOffAddrOp Nothing IntRep r a i
1018 dscCOpStmt [r] IndexOffAddrOp_Word [a,i] vols = doIndexOffAddrOp Nothing WordRep r a i
1019 dscCOpStmt [r] IndexOffAddrOp_Addr [a,i] vols = doIndexOffAddrOp Nothing AddrRep r a i
1020 dscCOpStmt [r] IndexOffAddrOp_Float [a,i] vols = doIndexOffAddrOp Nothing FloatRep r a i
1021 dscCOpStmt [r] IndexOffAddrOp_Double [a,i] vols = doIndexOffAddrOp Nothing DoubleRep r a i
1022 dscCOpStmt [r] IndexOffAddrOp_StablePtr [a,i] vols = doIndexOffAddrOp Nothing StablePtrRep r a i
1024 dscCOpStmt [r] IndexOffAddrOp_Int8 [a,i] vols = doIndexOffAddrOp Nothing Int8Rep r a i
1025 dscCOpStmt [r] IndexOffAddrOp_Int16 [a,i] vols = doIndexOffAddrOp Nothing Int16Rep r a i
1026 dscCOpStmt [r] IndexOffAddrOp_Int32 [a,i] vols = doIndexOffAddrOp Nothing Int32Rep r a i
1027 dscCOpStmt [r] IndexOffAddrOp_Int64 [a,i] vols = doIndexOffAddrOp Nothing Int64Rep r a i
1029 dscCOpStmt [r] IndexOffAddrOp_Word8 [a,i] vols = doIndexOffAddrOp Nothing Word8Rep r a i
1030 dscCOpStmt [r] IndexOffAddrOp_Word16 [a,i] vols = doIndexOffAddrOp Nothing Word16Rep r a i
1031 dscCOpStmt [r] IndexOffAddrOp_Word32 [a,i] vols = doIndexOffAddrOp Nothing Word32Rep r a i
1032 dscCOpStmt [r] IndexOffAddrOp_Word64 [a,i] vols = doIndexOffAddrOp Nothing Word64Rep r a i
1034 -- ReadXXXoffAddr, which are identical, for our purposes, to IndexXXXoffAddr.
1036 dscCOpStmt [r] ReadOffAddrOp_Char [a,i] vols = doIndexOffAddrOp (Just MO_8U_to_32U) Word8Rep r a i
1037 dscCOpStmt [r] ReadOffAddrOp_WideChar [a,i] vols = doIndexOffAddrOp Nothing Word32Rep r a i
1038 dscCOpStmt [r] ReadOffAddrOp_Int [a,i] vols = doIndexOffAddrOp Nothing IntRep r a i
1039 dscCOpStmt [r] ReadOffAddrOp_Word [a,i] vols = doIndexOffAddrOp Nothing WordRep r a i
1040 dscCOpStmt [r] ReadOffAddrOp_Addr [a,i] vols = doIndexOffAddrOp Nothing AddrRep r a i
1041 dscCOpStmt [r] ReadOffAddrOp_Float [a,i] vols = doIndexOffAddrOp Nothing FloatRep r a i
1042 dscCOpStmt [r] ReadOffAddrOp_Double [a,i] vols = doIndexOffAddrOp Nothing DoubleRep r a i
1043 dscCOpStmt [r] ReadOffAddrOp_StablePtr [a,i] vols = doIndexOffAddrOp Nothing StablePtrRep r a i
1045 dscCOpStmt [r] ReadOffAddrOp_Int8 [a,i] vols = doIndexOffAddrOp Nothing Int8Rep r a i
1046 dscCOpStmt [r] ReadOffAddrOp_Int16 [a,i] vols = doIndexOffAddrOp Nothing Int16Rep r a i
1047 dscCOpStmt [r] ReadOffAddrOp_Int32 [a,i] vols = doIndexOffAddrOp Nothing Int32Rep r a i
1048 dscCOpStmt [r] ReadOffAddrOp_Int64 [a,i] vols = doIndexOffAddrOp Nothing Int64Rep r a i
1050 dscCOpStmt [r] ReadOffAddrOp_Word8 [a,i] vols = doIndexOffAddrOp Nothing Word8Rep r a i
1051 dscCOpStmt [r] ReadOffAddrOp_Word16 [a,i] vols = doIndexOffAddrOp Nothing Word16Rep r a i
1052 dscCOpStmt [r] ReadOffAddrOp_Word32 [a,i] vols = doIndexOffAddrOp Nothing Word32Rep r a i
1053 dscCOpStmt [r] ReadOffAddrOp_Word64 [a,i] vols = doIndexOffAddrOp Nothing Word64Rep r a i
1057 dscCOpStmt [r] IndexByteArrayOp_Char [a,i] vols = doIndexByteArrayOp (Just MO_8U_to_32U) Word8Rep r a i
1058 dscCOpStmt [r] IndexByteArrayOp_WideChar [a,i] vols = doIndexByteArrayOp Nothing Word32Rep r a i
1059 dscCOpStmt [r] IndexByteArrayOp_Int [a,i] vols = doIndexByteArrayOp Nothing IntRep r a i
1060 dscCOpStmt [r] IndexByteArrayOp_Word [a,i] vols = doIndexByteArrayOp Nothing WordRep r a i
1061 dscCOpStmt [r] IndexByteArrayOp_Addr [a,i] vols = doIndexByteArrayOp Nothing AddrRep r a i
1062 dscCOpStmt [r] IndexByteArrayOp_Float [a,i] vols = doIndexByteArrayOp Nothing FloatRep r a i
1063 dscCOpStmt [r] IndexByteArrayOp_Double [a,i] vols = doIndexByteArrayOp Nothing DoubleRep r a i
1064 dscCOpStmt [r] IndexByteArrayOp_StablePtr [a,i] vols = doIndexByteArrayOp Nothing StablePtrRep r a i
1066 dscCOpStmt [r] IndexByteArrayOp_Int8 [a,i] vols = doIndexByteArrayOp Nothing Int8Rep r a i
1067 dscCOpStmt [r] IndexByteArrayOp_Int16 [a,i] vols = doIndexByteArrayOp Nothing Int16Rep r a i
1068 dscCOpStmt [r] IndexByteArrayOp_Int32 [a,i] vols = doIndexByteArrayOp Nothing Int32Rep r a i
1069 dscCOpStmt [r] IndexByteArrayOp_Int64 [a,i] vols = doIndexByteArrayOp Nothing Int64Rep r a i
1071 dscCOpStmt [r] IndexByteArrayOp_Word8 [a,i] vols = doIndexByteArrayOp Nothing Word8Rep r a i
1072 dscCOpStmt [r] IndexByteArrayOp_Word16 [a,i] vols = doIndexByteArrayOp Nothing Word16Rep r a i
1073 dscCOpStmt [r] IndexByteArrayOp_Word32 [a,i] vols = doIndexByteArrayOp Nothing Word32Rep r a i
1074 dscCOpStmt [r] IndexByteArrayOp_Word64 [a,i] vols = doIndexByteArrayOp Nothing Word64Rep r a i
1076 -- ReadXXXArray, identical to IndexXXXArray.
1078 dscCOpStmt [r] ReadByteArrayOp_Char [a,i] vols = doIndexByteArrayOp (Just MO_8U_to_32U) Word8Rep r a i
1079 dscCOpStmt [r] ReadByteArrayOp_WideChar [a,i] vols = doIndexByteArrayOp Nothing Word32Rep r a i
1080 dscCOpStmt [r] ReadByteArrayOp_Int [a,i] vols = doIndexByteArrayOp Nothing IntRep r a i
1081 dscCOpStmt [r] ReadByteArrayOp_Word [a,i] vols = doIndexByteArrayOp Nothing WordRep r a i
1082 dscCOpStmt [r] ReadByteArrayOp_Addr [a,i] vols = doIndexByteArrayOp Nothing AddrRep r a i
1083 dscCOpStmt [r] ReadByteArrayOp_Float [a,i] vols = doIndexByteArrayOp Nothing FloatRep r a i
1084 dscCOpStmt [r] ReadByteArrayOp_Double [a,i] vols = doIndexByteArrayOp Nothing DoubleRep r a i
1085 dscCOpStmt [r] ReadByteArrayOp_StablePtr [a,i] vols = doIndexByteArrayOp Nothing StablePtrRep r a i
1087 dscCOpStmt [r] ReadByteArrayOp_Int8 [a,i] vols = doIndexByteArrayOp Nothing Int8Rep r a i
1088 dscCOpStmt [r] ReadByteArrayOp_Int16 [a,i] vols = doIndexByteArrayOp Nothing Int16Rep r a i
1089 dscCOpStmt [r] ReadByteArrayOp_Int32 [a,i] vols = doIndexByteArrayOp Nothing Int32Rep r a i
1090 dscCOpStmt [r] ReadByteArrayOp_Int64 [a,i] vols = doIndexByteArrayOp Nothing Int64Rep r a i
1092 dscCOpStmt [r] ReadByteArrayOp_Word8 [a,i] vols = doIndexByteArrayOp Nothing Word8Rep r a i
1093 dscCOpStmt [r] ReadByteArrayOp_Word16 [a,i] vols = doIndexByteArrayOp Nothing Word16Rep r a i
1094 dscCOpStmt [r] ReadByteArrayOp_Word32 [a,i] vols = doIndexByteArrayOp Nothing Word32Rep r a i
1095 dscCOpStmt [r] ReadByteArrayOp_Word64 [a,i] vols = doIndexByteArrayOp Nothing Word64Rep r a i
1099 dscCOpStmt [] WriteOffAddrOp_Char [a,i,x] vols = doWriteOffAddrOp (Just MO_32U_to_8U) Word8Rep a i x
1100 dscCOpStmt [] WriteOffAddrOp_WideChar [a,i,x] vols = doWriteOffAddrOp Nothing Word32Rep a i x
1101 dscCOpStmt [] WriteOffAddrOp_Int [a,i,x] vols = doWriteOffAddrOp Nothing IntRep a i x
1102 dscCOpStmt [] WriteOffAddrOp_Word [a,i,x] vols = doWriteOffAddrOp Nothing WordRep a i x
1103 dscCOpStmt [] WriteOffAddrOp_Addr [a,i,x] vols = doWriteOffAddrOp Nothing AddrRep a i x
1104 dscCOpStmt [] WriteOffAddrOp_Float [a,i,x] vols = doWriteOffAddrOp Nothing FloatRep a i x
1105 dscCOpStmt [] WriteOffAddrOp_ForeignObj [a,i,x] vols = doWriteOffAddrOp Nothing PtrRep a i x
1106 dscCOpStmt [] WriteOffAddrOp_Double [a,i,x] vols = doWriteOffAddrOp Nothing DoubleRep a i x
1107 dscCOpStmt [] WriteOffAddrOp_StablePtr [a,i,x] vols = doWriteOffAddrOp Nothing StablePtrRep a i x
1109 dscCOpStmt [] WriteOffAddrOp_Int8 [a,i,x] vols = doWriteOffAddrOp Nothing Int8Rep a i x
1110 dscCOpStmt [] WriteOffAddrOp_Int16 [a,i,x] vols = doWriteOffAddrOp Nothing Int16Rep a i x
1111 dscCOpStmt [] WriteOffAddrOp_Int32 [a,i,x] vols = doWriteOffAddrOp Nothing Int32Rep a i x
1112 dscCOpStmt [] WriteOffAddrOp_Int64 [a,i,x] vols = doWriteOffAddrOp Nothing Int64Rep a i x
1114 dscCOpStmt [] WriteOffAddrOp_Word8 [a,i,x] vols = doWriteOffAddrOp Nothing Word8Rep a i x
1115 dscCOpStmt [] WriteOffAddrOp_Word16 [a,i,x] vols = doWriteOffAddrOp Nothing Word16Rep a i x
1116 dscCOpStmt [] WriteOffAddrOp_Word32 [a,i,x] vols = doWriteOffAddrOp Nothing Word32Rep a i x
1117 dscCOpStmt [] WriteOffAddrOp_Word64 [a,i,x] vols = doWriteOffAddrOp Nothing Word64Rep a i x
1121 dscCOpStmt [] WriteByteArrayOp_Char [a,i,x] vols = doWriteByteArrayOp (Just MO_32U_to_8U) Word8Rep a i x
1122 dscCOpStmt [] WriteByteArrayOp_WideChar [a,i,x] vols = doWriteByteArrayOp Nothing Word32Rep a i x
1123 dscCOpStmt [] WriteByteArrayOp_Int [a,i,x] vols = doWriteByteArrayOp Nothing IntRep a i x
1124 dscCOpStmt [] WriteByteArrayOp_Word [a,i,x] vols = doWriteByteArrayOp Nothing WordRep a i x
1125 dscCOpStmt [] WriteByteArrayOp_Addr [a,i,x] vols = doWriteByteArrayOp Nothing AddrRep a i x
1126 dscCOpStmt [] WriteByteArrayOp_Float [a,i,x] vols = doWriteByteArrayOp Nothing FloatRep a i x
1127 dscCOpStmt [] WriteByteArrayOp_Double [a,i,x] vols = doWriteByteArrayOp Nothing DoubleRep a i x
1128 dscCOpStmt [] WriteByteArrayOp_StablePtr [a,i,x] vols = doWriteByteArrayOp Nothing StablePtrRep a i x
1130 dscCOpStmt [] WriteByteArrayOp_Int8 [a,i,x] vols = doWriteByteArrayOp Nothing Int8Rep a i x
1131 dscCOpStmt [] WriteByteArrayOp_Int16 [a,i,x] vols = doWriteByteArrayOp Nothing Int16Rep a i x
1132 dscCOpStmt [] WriteByteArrayOp_Int32 [a,i,x] vols = doWriteByteArrayOp Nothing Int32Rep a i x
1133 dscCOpStmt [] WriteByteArrayOp_Int64 [a,i,x] vols = doWriteByteArrayOp Nothing Int64Rep a i x
1135 dscCOpStmt [] WriteByteArrayOp_Word8 [a,i,x] vols = doWriteByteArrayOp Nothing Word8Rep a i x
1136 dscCOpStmt [] WriteByteArrayOp_Word16 [a,i,x] vols = doWriteByteArrayOp Nothing Word16Rep a i x
1137 dscCOpStmt [] WriteByteArrayOp_Word32 [a,i,x] vols = doWriteByteArrayOp Nothing Word32Rep a i x
1138 dscCOpStmt [] WriteByteArrayOp_Word64 [a,i,x] vols = doWriteByteArrayOp Nothing Word64Rep a i x
1141 -- Handle all others as simply as possible.
1142 dscCOpStmt ress op args vols
1143 = case translateOp ress op args of
1145 -> pprPanic "dscCOpStmt: can't translate PrimOp" (ppr op)
1146 Just (maybe_res, mop, args)
1148 CMachOpStmt maybe_res mop args
1149 (if isDefinitelyInlineMachOp mop then Nothing else Just vols)
1152 -- Native word signless ops
1154 translateOp [r] IntAddOp [a1,a2] = Just (r, MO_Nat_Add, [a1,a2])
1155 translateOp [r] IntSubOp [a1,a2] = Just (r, MO_Nat_Sub, [a1,a2])
1156 translateOp [r] WordAddOp [a1,a2] = Just (r, MO_Nat_Add, [a1,a2])
1157 translateOp [r] WordSubOp [a1,a2] = Just (r, MO_Nat_Sub, [a1,a2])
1158 translateOp [r] AddrAddOp [a1,a2] = Just (r, MO_Nat_Add, [a1,a2])
1159 translateOp [r] AddrSubOp [a1,a2] = Just (r, MO_Nat_Sub, [a1,a2])
1161 translateOp [r] IntEqOp [a1,a2] = Just (r, MO_Nat_Eq, [a1,a2])
1162 translateOp [r] IntNeOp [a1,a2] = Just (r, MO_Nat_Ne, [a1,a2])
1163 translateOp [r] WordEqOp [a1,a2] = Just (r, MO_Nat_Eq, [a1,a2])
1164 translateOp [r] WordNeOp [a1,a2] = Just (r, MO_Nat_Ne, [a1,a2])
1165 translateOp [r] AddrEqOp [a1,a2] = Just (r, MO_Nat_Eq, [a1,a2])
1166 translateOp [r] AddrNeOp [a1,a2] = Just (r, MO_Nat_Ne, [a1,a2])
1168 translateOp [r] AndOp [a1,a2] = Just (r, MO_Nat_And, [a1,a2])
1169 translateOp [r] OrOp [a1,a2] = Just (r, MO_Nat_Or, [a1,a2])
1170 translateOp [r] XorOp [a1,a2] = Just (r, MO_Nat_Xor, [a1,a2])
1171 translateOp [r] NotOp [a1] = Just (r, MO_Nat_Not, [a1])
1173 -- Native word signed ops
1175 translateOp [r] IntMulOp [a1,a2] = Just (r, MO_NatS_Mul, [a1,a2])
1176 translateOp [r] IntMulMayOfloOp [a1,a2] = Just (r, MO_NatS_MulMayOflo, [a1,a2])
1177 translateOp [r] IntQuotOp [a1,a2] = Just (r, MO_NatS_Quot, [a1,a2])
1178 translateOp [r] IntRemOp [a1,a2] = Just (r, MO_NatS_Rem, [a1,a2])
1179 translateOp [r] IntNegOp [a1] = Just (r, MO_NatS_Neg, [a1])
1181 translateOp [r] IntGeOp [a1,a2] = Just (r, MO_NatS_Ge, [a1,a2])
1182 translateOp [r] IntLeOp [a1,a2] = Just (r, MO_NatS_Le, [a1,a2])
1183 translateOp [r] IntGtOp [a1,a2] = Just (r, MO_NatS_Gt, [a1,a2])
1184 translateOp [r] IntLtOp [a1,a2] = Just (r, MO_NatS_Lt, [a1,a2])
1187 -- Native word unsigned ops
1189 translateOp [r] WordGeOp [a1,a2] = Just (r, MO_NatU_Ge, [a1,a2])
1190 translateOp [r] WordLeOp [a1,a2] = Just (r, MO_NatU_Le, [a1,a2])
1191 translateOp [r] WordGtOp [a1,a2] = Just (r, MO_NatU_Gt, [a1,a2])
1192 translateOp [r] WordLtOp [a1,a2] = Just (r, MO_NatU_Lt, [a1,a2])
1194 translateOp [r] WordMulOp [a1,a2] = Just (r, MO_NatU_Mul, [a1,a2])
1195 translateOp [r] WordQuotOp [a1,a2] = Just (r, MO_NatU_Quot, [a1,a2])
1196 translateOp [r] WordRemOp [a1,a2] = Just (r, MO_NatU_Rem, [a1,a2])
1198 translateOp [r] AddrGeOp [a1,a2] = Just (r, MO_NatU_Ge, [a1,a2])
1199 translateOp [r] AddrLeOp [a1,a2] = Just (r, MO_NatU_Le, [a1,a2])
1200 translateOp [r] AddrGtOp [a1,a2] = Just (r, MO_NatU_Gt, [a1,a2])
1201 translateOp [r] AddrLtOp [a1,a2] = Just (r, MO_NatU_Lt, [a1,a2])
1203 -- 32-bit unsigned ops
1205 translateOp [r] CharEqOp [a1,a2] = Just (r, MO_32U_Eq, [a1,a2])
1206 translateOp [r] CharNeOp [a1,a2] = Just (r, MO_32U_Ne, [a1,a2])
1207 translateOp [r] CharGeOp [a1,a2] = Just (r, MO_32U_Ge, [a1,a2])
1208 translateOp [r] CharLeOp [a1,a2] = Just (r, MO_32U_Le, [a1,a2])
1209 translateOp [r] CharGtOp [a1,a2] = Just (r, MO_32U_Gt, [a1,a2])
1210 translateOp [r] CharLtOp [a1,a2] = Just (r, MO_32U_Lt, [a1,a2])
1214 translateOp [r] DoubleEqOp [a1,a2] = Just (r, MO_Dbl_Eq, [a1,a2])
1215 translateOp [r] DoubleNeOp [a1,a2] = Just (r, MO_Dbl_Ne, [a1,a2])
1216 translateOp [r] DoubleGeOp [a1,a2] = Just (r, MO_Dbl_Ge, [a1,a2])
1217 translateOp [r] DoubleLeOp [a1,a2] = Just (r, MO_Dbl_Le, [a1,a2])
1218 translateOp [r] DoubleGtOp [a1,a2] = Just (r, MO_Dbl_Gt, [a1,a2])
1219 translateOp [r] DoubleLtOp [a1,a2] = Just (r, MO_Dbl_Lt, [a1,a2])
1221 translateOp [r] DoubleAddOp [a1,a2] = Just (r, MO_Dbl_Add, [a1,a2])
1222 translateOp [r] DoubleSubOp [a1,a2] = Just (r, MO_Dbl_Sub, [a1,a2])
1223 translateOp [r] DoubleMulOp [a1,a2] = Just (r, MO_Dbl_Mul, [a1,a2])
1224 translateOp [r] DoubleDivOp [a1,a2] = Just (r, MO_Dbl_Div, [a1,a2])
1225 translateOp [r] DoublePowerOp [a1,a2] = Just (r, MO_Dbl_Pwr, [a1,a2])
1227 translateOp [r] DoubleSinOp [a1] = Just (r, MO_Dbl_Sin, [a1])
1228 translateOp [r] DoubleCosOp [a1] = Just (r, MO_Dbl_Cos, [a1])
1229 translateOp [r] DoubleTanOp [a1] = Just (r, MO_Dbl_Tan, [a1])
1230 translateOp [r] DoubleSinhOp [a1] = Just (r, MO_Dbl_Sinh, [a1])
1231 translateOp [r] DoubleCoshOp [a1] = Just (r, MO_Dbl_Cosh, [a1])
1232 translateOp [r] DoubleTanhOp [a1] = Just (r, MO_Dbl_Tanh, [a1])
1233 translateOp [r] DoubleAsinOp [a1] = Just (r, MO_Dbl_Asin, [a1])
1234 translateOp [r] DoubleAcosOp [a1] = Just (r, MO_Dbl_Acos, [a1])
1235 translateOp [r] DoubleAtanOp [a1] = Just (r, MO_Dbl_Atan, [a1])
1236 translateOp [r] DoubleLogOp [a1] = Just (r, MO_Dbl_Log, [a1])
1237 translateOp [r] DoubleExpOp [a1] = Just (r, MO_Dbl_Exp, [a1])
1238 translateOp [r] DoubleSqrtOp [a1] = Just (r, MO_Dbl_Sqrt, [a1])
1239 translateOp [r] DoubleNegOp [a1] = Just (r, MO_Dbl_Neg, [a1])
1243 translateOp [r] FloatEqOp [a1,a2] = Just (r, MO_Flt_Eq, [a1,a2])
1244 translateOp [r] FloatNeOp [a1,a2] = Just (r, MO_Flt_Ne, [a1,a2])
1245 translateOp [r] FloatGeOp [a1,a2] = Just (r, MO_Flt_Ge, [a1,a2])
1246 translateOp [r] FloatLeOp [a1,a2] = Just (r, MO_Flt_Le, [a1,a2])
1247 translateOp [r] FloatGtOp [a1,a2] = Just (r, MO_Flt_Gt, [a1,a2])
1248 translateOp [r] FloatLtOp [a1,a2] = Just (r, MO_Flt_Lt, [a1,a2])
1250 translateOp [r] FloatAddOp [a1,a2] = Just (r, MO_Flt_Add, [a1,a2])
1251 translateOp [r] FloatSubOp [a1,a2] = Just (r, MO_Flt_Sub, [a1,a2])
1252 translateOp [r] FloatMulOp [a1,a2] = Just (r, MO_Flt_Mul, [a1,a2])
1253 translateOp [r] FloatDivOp [a1,a2] = Just (r, MO_Flt_Div, [a1,a2])
1254 translateOp [r] FloatPowerOp [a1,a2] = Just (r, MO_Flt_Pwr, [a1,a2])
1256 translateOp [r] FloatSinOp [a1] = Just (r, MO_Flt_Sin, [a1])
1257 translateOp [r] FloatCosOp [a1] = Just (r, MO_Flt_Cos, [a1])
1258 translateOp [r] FloatTanOp [a1] = Just (r, MO_Flt_Tan, [a1])
1259 translateOp [r] FloatSinhOp [a1] = Just (r, MO_Flt_Sinh, [a1])
1260 translateOp [r] FloatCoshOp [a1] = Just (r, MO_Flt_Cosh, [a1])
1261 translateOp [r] FloatTanhOp [a1] = Just (r, MO_Flt_Tanh, [a1])
1262 translateOp [r] FloatAsinOp [a1] = Just (r, MO_Flt_Asin, [a1])
1263 translateOp [r] FloatAcosOp [a1] = Just (r, MO_Flt_Acos, [a1])
1264 translateOp [r] FloatAtanOp [a1] = Just (r, MO_Flt_Atan, [a1])
1265 translateOp [r] FloatLogOp [a1] = Just (r, MO_Flt_Log, [a1])
1266 translateOp [r] FloatExpOp [a1] = Just (r, MO_Flt_Exp, [a1])
1267 translateOp [r] FloatSqrtOp [a1] = Just (r, MO_Flt_Sqrt, [a1])
1268 translateOp [r] FloatNegOp [a1] = Just (r, MO_Flt_Neg, [a1])
1272 translateOp [r] Int2DoubleOp [a1] = Just (r, MO_NatS_to_Dbl, [a1])
1273 translateOp [r] Double2IntOp [a1] = Just (r, MO_Dbl_to_NatS, [a1])
1275 translateOp [r] Int2FloatOp [a1] = Just (r, MO_NatS_to_Flt, [a1])
1276 translateOp [r] Float2IntOp [a1] = Just (r, MO_Flt_to_NatS, [a1])
1278 translateOp [r] Float2DoubleOp [a1] = Just (r, MO_Flt_to_Dbl, [a1])
1279 translateOp [r] Double2FloatOp [a1] = Just (r, MO_Dbl_to_Flt, [a1])
1281 translateOp [r] Int2WordOp [a1] = Just (r, MO_NatS_to_NatU, [a1])
1282 translateOp [r] Word2IntOp [a1] = Just (r, MO_NatU_to_NatS, [a1])
1284 translateOp [r] Int2AddrOp [a1] = Just (r, MO_NatS_to_NatP, [a1])
1285 translateOp [r] Addr2IntOp [a1] = Just (r, MO_NatP_to_NatS, [a1])
1287 translateOp [r] OrdOp [a1] = Just (r, MO_32U_to_NatS, [a1])
1288 translateOp [r] ChrOp [a1] = Just (r, MO_NatS_to_32U, [a1])
1290 translateOp [r] Narrow8IntOp [a1] = Just (r, MO_8S_to_NatS, [a1])
1291 translateOp [r] Narrow16IntOp [a1] = Just (r, MO_16S_to_NatS, [a1])
1292 translateOp [r] Narrow32IntOp [a1] = Just (r, MO_32S_to_NatS, [a1])
1294 translateOp [r] Narrow8WordOp [a1] = Just (r, MO_8U_to_NatU, [a1])
1295 translateOp [r] Narrow16WordOp [a1] = Just (r, MO_16U_to_NatU, [a1])
1296 translateOp [r] Narrow32WordOp [a1] = Just (r, MO_32U_to_NatU, [a1])
1298 -- Word comparisons masquerading as more exotic things.
1300 translateOp [r] SameMutVarOp [a1,a2] = Just (r, MO_Nat_Eq, [a1,a2])
1301 translateOp [r] SameMVarOp [a1,a2] = Just (r, MO_Nat_Eq, [a1,a2])
1302 translateOp [r] SameMutableArrayOp [a1,a2] = Just (r, MO_Nat_Eq, [a1,a2])
1303 translateOp [r] SameMutableByteArrayOp [a1,a2] = Just (r, MO_Nat_Eq, [a1,a2])
1304 translateOp [r] EqForeignObj [a1,a2] = Just (r, MO_Nat_Eq, [a1,a2])
1305 translateOp [r] EqStablePtrOp [a1,a2] = Just (r, MO_Nat_Eq, [a1,a2])
1307 translateOp _ _ _ = Nothing