1 -----------------------------------------------------------------------------
3 -- Stg to C--: primitive operations
5 -- (c) The University of Glasgow 2004-2006
7 -----------------------------------------------------------------------------
13 #include "HsVersions.h"
24 import Type ( Type, tyConAppTyCon )
35 ------------------------------------------------------------------------
36 -- Primitive operations and foreign calls
37 ------------------------------------------------------------------------
39 {- Note [Foreign call results]
40 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
41 A foreign call always returns an unboxed tuple of results, one
42 of which is the state token. This seems to happen even for pure
45 Even if we returned a single result for pure calls, it'd still be
46 right to wrap it in a singleton unboxed tuple, because the result
47 might be a Haskell closure pointer, we don't want to evaluate it. -}
49 ----------------------------------
50 cgOpApp :: StgOp -- The op
51 -> [StgArg] -- Arguments
52 -> Type -- Result type (always an unboxed tuple)
56 cgOpApp (StgFCallOp fcall _) stg_args res_ty
57 = do { (res_regs, res_hints) <- newUnboxedTupleRegs res_ty
58 -- Choose result regs r1, r2
59 -- Note [Foreign call results]
60 ; cgForeignCall res_regs res_hints fcall stg_args
61 -- r1, r2 = foo( x, y )
62 ; emitReturn (map (CmmReg . CmmLocal) res_regs) }
65 -- tagToEnum# is special: we need to pull the constructor
66 -- out of the table, and perform an appropriate return.
68 cgOpApp (StgPrimOp TagToEnumOp) [arg] res_ty
69 = ASSERT(isEnumerationTyCon tycon)
70 do { args' <- getNonVoidArgAmodes [arg]
71 ; let amode = case args' of [amode] -> amode
72 _ -> panic "TagToEnumOp had void arg"
73 ; emitReturn [tagToClosure tycon amode] }
75 -- If you're reading this code in the attempt to figure
76 -- out why the compiler panic'ed here, it is probably because
77 -- you used tagToEnum# in a non-monomorphic setting, e.g.,
78 -- intToTg :: Enum a => Int -> a ; intToTg (I# x#) = tagToEnum# x#
80 tycon = tyConAppTyCon res_ty
82 cgOpApp (StgPrimOp primop) args res_ty
83 | primOpOutOfLine primop
84 = do { cmm_args <- getNonVoidArgAmodes args
85 ; let fun = CmmLit (CmmLabel (mkRtsPrimOpLabel primop))
86 ; emitCall (PrimOpCall, PrimOpReturn) fun cmm_args }
88 | ReturnsPrim VoidRep <- result_info
89 = do cgPrimOp [] primop args
92 | ReturnsPrim rep <- result_info
93 = do res <- newTemp (primRepCmmType rep)
94 cgPrimOp [res] primop args
95 emitReturn [CmmReg (CmmLocal res)]
97 | ReturnsAlg tycon <- result_info, isUnboxedTupleTyCon tycon
98 = do (regs, _hints) <- newUnboxedTupleRegs res_ty
99 cgPrimOp regs primop args
100 emitReturn (map (CmmReg . CmmLocal) regs)
102 | ReturnsAlg tycon <- result_info
103 , isEnumerationTyCon tycon
104 -- c.f. cgExpr (...TagToEnumOp...)
105 = do tag_reg <- newTemp bWord
106 cgPrimOp [tag_reg] primop args
107 emitReturn [tagToClosure tycon
108 (CmmReg (CmmLocal tag_reg))]
110 | otherwise = panic "cgPrimop"
112 result_info = getPrimOpResultInfo primop
114 cgOpApp (StgPrimCallOp primcall) args _res_ty
115 = do { cmm_args <- getNonVoidArgAmodes args
116 ; let fun = CmmLit (CmmLabel (mkPrimCallLabel primcall))
117 ; emitCall (PrimOpCall, PrimOpReturn) fun cmm_args }
119 ---------------------------------------------------
120 cgPrimOp :: [LocalReg] -- where to put the results
122 -> [StgArg] -- arguments
125 cgPrimOp results op args
126 = do arg_exprs <- getNonVoidArgAmodes args
127 emitPrimOp results op arg_exprs
130 ------------------------------------------------------------------------
131 -- Emitting code for a primop
132 ------------------------------------------------------------------------
134 emitPrimOp :: [LocalReg] -- where to put the results
136 -> [CmmExpr] -- arguments
139 -- First we handle various awkward cases specially. The remaining
140 -- easy cases are then handled by translateOp, defined below.
142 emitPrimOp [res_r,res_c] IntAddCOp [aa,bb]
144 With some bit-twiddling, we can define int{Add,Sub}Czh portably in
145 C, and without needing any comparisons. This may not be the
146 fastest way to do it - if you have better code, please send it! --SDM
148 Return : r = a + b, c = 0 if no overflow, 1 on overflow.
150 We currently don't make use of the r value if c is != 0 (i.e.
151 overflow), we just convert to big integers and try again. This
152 could be improved by making r and c the correct values for
153 plugging into a new J#.
155 { r = ((I_)(a)) + ((I_)(b)); \
156 c = ((StgWord)(~(((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
157 >> (BITS_IN (I_) - 1); \
159 Wading through the mass of bracketry, it seems to reduce to:
160 c = ( (~(a^b)) & (a^r) ) >>unsigned (BITS_IN(I_)-1)
163 = emit $ catAGraphs [
164 mkAssign (CmmLocal res_r) (CmmMachOp mo_wordAdd [aa,bb]),
165 mkAssign (CmmLocal res_c) $
166 CmmMachOp mo_wordUShr [
167 CmmMachOp mo_wordAnd [
168 CmmMachOp mo_wordNot [CmmMachOp mo_wordXor [aa,bb]],
169 CmmMachOp mo_wordXor [aa, CmmReg (CmmLocal res_r)]
171 CmmLit (mkIntCLit (wORD_SIZE_IN_BITS - 1))
176 emitPrimOp [res_r,res_c] IntSubCOp [aa,bb]
178 #define subIntCzh(r,c,a,b) \
179 { r = ((I_)(a)) - ((I_)(b)); \
180 c = ((StgWord)((((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
181 >> (BITS_IN (I_) - 1); \
184 c = ((a^b) & (a^r)) >>unsigned (BITS_IN(I_)-1)
186 = emit $ catAGraphs [
187 mkAssign (CmmLocal res_r) (CmmMachOp mo_wordSub [aa,bb]),
188 mkAssign (CmmLocal res_c) $
189 CmmMachOp mo_wordUShr [
190 CmmMachOp mo_wordAnd [
191 CmmMachOp mo_wordXor [aa,bb],
192 CmmMachOp mo_wordXor [aa, CmmReg (CmmLocal res_r)]
194 CmmLit (mkIntCLit (wORD_SIZE_IN_BITS - 1))
199 emitPrimOp [res] ParOp [arg]
201 -- for now, just implement this in a C function
202 -- later, we might want to inline it.
205 (CmmLit (CmmLabel (mkCmmCodeLabel rtsPackageId (fsLit "newSpark"))))
206 [(CmmReg (CmmGlobal BaseReg), AddrHint), (arg,AddrHint)]
208 emitPrimOp [res] ReadMutVarOp [mutv]
209 = emit (mkAssign (CmmLocal res) (cmmLoadIndexW mutv fixedHdrSize gcWord))
211 emitPrimOp [] WriteMutVarOp [mutv,var]
213 emit (mkStore (cmmOffsetW mutv fixedHdrSize) var)
216 (CmmLit (CmmLabel mkDirty_MUT_VAR_Label))
217 [(CmmReg (CmmGlobal BaseReg), AddrHint), (mutv,AddrHint)]
219 -- #define sizzeofByteArrayzh(r,a) \
220 -- r = (((StgArrWords *)(a))->words * sizeof(W_))
221 emitPrimOp [res] SizeofByteArrayOp [arg]
223 mkAssign (CmmLocal res) (CmmMachOp mo_wordMul [
224 cmmLoadIndexW arg fixedHdrSize bWord,
225 CmmLit (mkIntCLit wORD_SIZE)
228 -- #define sizzeofMutableByteArrayzh(r,a) \
229 -- r = (((StgArrWords *)(a))->words * sizeof(W_))
230 emitPrimOp [res] SizeofMutableByteArrayOp [arg]
231 = emitPrimOp [res] SizeofByteArrayOp [arg]
234 -- #define touchzh(o) /* nothing */
235 emitPrimOp [] TouchOp [_arg]
238 -- #define byteArrayContentszh(r,a) r = BYTE_ARR_CTS(a)
239 emitPrimOp [res] ByteArrayContents_Char [arg]
240 = emit (mkAssign (CmmLocal res) (cmmOffsetB arg arrWordsHdrSize))
242 -- #define stableNameToIntzh(r,s) (r = ((StgStableName *)s)->sn)
243 emitPrimOp [res] StableNameToIntOp [arg]
244 = emit (mkAssign (CmmLocal res) (cmmLoadIndexW arg fixedHdrSize bWord))
246 -- #define eqStableNamezh(r,sn1,sn2) \
247 -- (r = (((StgStableName *)sn1)->sn == ((StgStableName *)sn2)->sn))
248 emitPrimOp [res] EqStableNameOp [arg1,arg2]
249 = emit (mkAssign (CmmLocal res) (CmmMachOp mo_wordEq [
250 cmmLoadIndexW arg1 fixedHdrSize bWord,
251 cmmLoadIndexW arg2 fixedHdrSize bWord
255 emitPrimOp [res] ReallyUnsafePtrEqualityOp [arg1,arg2]
256 = emit (mkAssign (CmmLocal res) (CmmMachOp mo_wordEq [arg1,arg2]))
258 -- #define addrToHValuezh(r,a) r=(P_)a
259 emitPrimOp [res] AddrToHValueOp [arg]
260 = emit (mkAssign (CmmLocal res) arg)
262 -- #define dataToTagzh(r,a) r=(GET_TAG(((StgClosure *)a)->header.info))
263 -- Note: argument may be tagged!
264 emitPrimOp [res] DataToTagOp [arg]
265 = emit (mkAssign (CmmLocal res) (getConstrTag (cmmUntag arg)))
267 {- Freezing arrays-of-ptrs requires changing an info table, for the
268 benefit of the generational collector. It needs to scavenge mutable
269 objects, even if they are in old space. When they become immutable,
270 they can be removed from this scavenge list. -}
272 -- #define unsafeFreezzeArrayzh(r,a)
274 -- SET_INFO((StgClosure *)a,&stg_MUT_ARR_PTRS_FROZEN0_info);
277 emitPrimOp [res] UnsafeFreezeArrayOp [arg]
279 [ setInfo arg (CmmLit (CmmLabel mkMAP_FROZEN_infoLabel)),
280 mkAssign (CmmLocal res) arg ]
282 -- #define unsafeFreezzeByteArrayzh(r,a) r=(a)
283 emitPrimOp [res] UnsafeFreezeByteArrayOp [arg]
284 = emit (mkAssign (CmmLocal res) arg)
286 -- Reading/writing pointer arrays
288 emitPrimOp [r] ReadArrayOp [obj,ix] = doReadPtrArrayOp r obj ix
289 emitPrimOp [r] IndexArrayOp [obj,ix] = doReadPtrArrayOp r obj ix
290 emitPrimOp [] WriteArrayOp [obj,ix,v] = doWritePtrArrayOp obj ix v
294 emitPrimOp res IndexOffAddrOp_Char args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
295 emitPrimOp res IndexOffAddrOp_WideChar args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
296 emitPrimOp res IndexOffAddrOp_Int args = doIndexOffAddrOp Nothing bWord res args
297 emitPrimOp res IndexOffAddrOp_Word args = doIndexOffAddrOp Nothing bWord res args
298 emitPrimOp res IndexOffAddrOp_Addr args = doIndexOffAddrOp Nothing bWord res args
299 emitPrimOp res IndexOffAddrOp_Float args = doIndexOffAddrOp Nothing f32 res args
300 emitPrimOp res IndexOffAddrOp_Double args = doIndexOffAddrOp Nothing f64 res args
301 emitPrimOp res IndexOffAddrOp_StablePtr args = doIndexOffAddrOp Nothing bWord res args
302 emitPrimOp res IndexOffAddrOp_Int8 args = doIndexOffAddrOp (Just mo_s_8ToWord) b8 res args
303 emitPrimOp res IndexOffAddrOp_Int16 args = doIndexOffAddrOp (Just mo_s_16ToWord) b16 res args
304 emitPrimOp res IndexOffAddrOp_Int32 args = doIndexOffAddrOp (Just mo_s_32ToWord) b32 res args
305 emitPrimOp res IndexOffAddrOp_Int64 args = doIndexOffAddrOp Nothing b64 res args
306 emitPrimOp res IndexOffAddrOp_Word8 args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
307 emitPrimOp res IndexOffAddrOp_Word16 args = doIndexOffAddrOp (Just mo_u_16ToWord) b16 res args
308 emitPrimOp res IndexOffAddrOp_Word32 args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
309 emitPrimOp res IndexOffAddrOp_Word64 args = doIndexOffAddrOp Nothing b64 res args
311 -- ReadXXXoffAddr, which are identical, for our purposes, to IndexXXXoffAddr.
313 emitPrimOp res ReadOffAddrOp_Char args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
314 emitPrimOp res ReadOffAddrOp_WideChar args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
315 emitPrimOp res ReadOffAddrOp_Int args = doIndexOffAddrOp Nothing bWord res args
316 emitPrimOp res ReadOffAddrOp_Word args = doIndexOffAddrOp Nothing bWord res args
317 emitPrimOp res ReadOffAddrOp_Addr args = doIndexOffAddrOp Nothing bWord res args
318 emitPrimOp res ReadOffAddrOp_Float args = doIndexOffAddrOp Nothing f32 res args
319 emitPrimOp res ReadOffAddrOp_Double args = doIndexOffAddrOp Nothing f64 res args
320 emitPrimOp res ReadOffAddrOp_StablePtr args = doIndexOffAddrOp Nothing bWord res args
321 emitPrimOp res ReadOffAddrOp_Int8 args = doIndexOffAddrOp (Just mo_s_8ToWord) b8 res args
322 emitPrimOp res ReadOffAddrOp_Int16 args = doIndexOffAddrOp (Just mo_s_16ToWord) b16 res args
323 emitPrimOp res ReadOffAddrOp_Int32 args = doIndexOffAddrOp (Just mo_s_32ToWord) b32 res args
324 emitPrimOp res ReadOffAddrOp_Int64 args = doIndexOffAddrOp Nothing b64 res args
325 emitPrimOp res ReadOffAddrOp_Word8 args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
326 emitPrimOp res ReadOffAddrOp_Word16 args = doIndexOffAddrOp (Just mo_u_16ToWord) b16 res args
327 emitPrimOp res ReadOffAddrOp_Word32 args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
328 emitPrimOp res ReadOffAddrOp_Word64 args = doIndexOffAddrOp Nothing b64 res args
332 emitPrimOp res IndexByteArrayOp_Char args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
333 emitPrimOp res IndexByteArrayOp_WideChar args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
334 emitPrimOp res IndexByteArrayOp_Int args = doIndexByteArrayOp Nothing bWord res args
335 emitPrimOp res IndexByteArrayOp_Word args = doIndexByteArrayOp Nothing bWord res args
336 emitPrimOp res IndexByteArrayOp_Addr args = doIndexByteArrayOp Nothing bWord res args
337 emitPrimOp res IndexByteArrayOp_Float args = doIndexByteArrayOp Nothing f32 res args
338 emitPrimOp res IndexByteArrayOp_Double args = doIndexByteArrayOp Nothing f64 res args
339 emitPrimOp res IndexByteArrayOp_StablePtr args = doIndexByteArrayOp Nothing bWord res args
340 emitPrimOp res IndexByteArrayOp_Int8 args = doIndexByteArrayOp (Just mo_s_8ToWord) b8 res args
341 emitPrimOp res IndexByteArrayOp_Int16 args = doIndexByteArrayOp (Just mo_s_16ToWord) b16 res args
342 emitPrimOp res IndexByteArrayOp_Int32 args = doIndexByteArrayOp (Just mo_s_32ToWord) b32 res args
343 emitPrimOp res IndexByteArrayOp_Int64 args = doIndexByteArrayOp Nothing b64 res args
344 emitPrimOp res IndexByteArrayOp_Word8 args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
345 emitPrimOp res IndexByteArrayOp_Word16 args = doIndexByteArrayOp (Just mo_u_16ToWord) b16 res args
346 emitPrimOp res IndexByteArrayOp_Word32 args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
347 emitPrimOp res IndexByteArrayOp_Word64 args = doIndexByteArrayOp Nothing b64 res args
349 -- ReadXXXArray, identical to IndexXXXArray.
351 emitPrimOp res ReadByteArrayOp_Char args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
352 emitPrimOp res ReadByteArrayOp_WideChar args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
353 emitPrimOp res ReadByteArrayOp_Int args = doIndexByteArrayOp Nothing bWord res args
354 emitPrimOp res ReadByteArrayOp_Word args = doIndexByteArrayOp Nothing bWord res args
355 emitPrimOp res ReadByteArrayOp_Addr args = doIndexByteArrayOp Nothing bWord res args
356 emitPrimOp res ReadByteArrayOp_Float args = doIndexByteArrayOp Nothing f32 res args
357 emitPrimOp res ReadByteArrayOp_Double args = doIndexByteArrayOp Nothing f64 res args
358 emitPrimOp res ReadByteArrayOp_StablePtr args = doIndexByteArrayOp Nothing bWord res args
359 emitPrimOp res ReadByteArrayOp_Int8 args = doIndexByteArrayOp (Just mo_s_8ToWord) b8 res args
360 emitPrimOp res ReadByteArrayOp_Int16 args = doIndexByteArrayOp (Just mo_s_16ToWord) b16 res args
361 emitPrimOp res ReadByteArrayOp_Int32 args = doIndexByteArrayOp (Just mo_s_32ToWord) b32 res args
362 emitPrimOp res ReadByteArrayOp_Int64 args = doIndexByteArrayOp Nothing b64 res args
363 emitPrimOp res ReadByteArrayOp_Word8 args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
364 emitPrimOp res ReadByteArrayOp_Word16 args = doIndexByteArrayOp (Just mo_u_16ToWord) b16 res args
365 emitPrimOp res ReadByteArrayOp_Word32 args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
366 emitPrimOp res ReadByteArrayOp_Word64 args = doIndexByteArrayOp Nothing b64 res args
370 emitPrimOp res WriteOffAddrOp_Char args = doWriteOffAddrOp (Just mo_WordTo8) res args
371 emitPrimOp res WriteOffAddrOp_WideChar args = doWriteOffAddrOp (Just mo_WordTo32) res args
372 emitPrimOp res WriteOffAddrOp_Int args = doWriteOffAddrOp Nothing res args
373 emitPrimOp res WriteOffAddrOp_Word args = doWriteOffAddrOp Nothing res args
374 emitPrimOp res WriteOffAddrOp_Addr args = doWriteOffAddrOp Nothing res args
375 emitPrimOp res WriteOffAddrOp_Float args = doWriteOffAddrOp Nothing res args
376 emitPrimOp res WriteOffAddrOp_Double args = doWriteOffAddrOp Nothing res args
377 emitPrimOp res WriteOffAddrOp_StablePtr args = doWriteOffAddrOp Nothing res args
378 emitPrimOp res WriteOffAddrOp_Int8 args = doWriteOffAddrOp (Just mo_WordTo8) res args
379 emitPrimOp res WriteOffAddrOp_Int16 args = doWriteOffAddrOp (Just mo_WordTo16) res args
380 emitPrimOp res WriteOffAddrOp_Int32 args = doWriteOffAddrOp (Just mo_WordTo32) res args
381 emitPrimOp res WriteOffAddrOp_Int64 args = doWriteOffAddrOp Nothing res args
382 emitPrimOp res WriteOffAddrOp_Word8 args = doWriteOffAddrOp (Just mo_WordTo8) res args
383 emitPrimOp res WriteOffAddrOp_Word16 args = doWriteOffAddrOp (Just mo_WordTo16) res args
384 emitPrimOp res WriteOffAddrOp_Word32 args = doWriteOffAddrOp (Just mo_WordTo32) res args
385 emitPrimOp res WriteOffAddrOp_Word64 args = doWriteOffAddrOp Nothing res args
389 emitPrimOp res WriteByteArrayOp_Char args = doWriteByteArrayOp (Just mo_WordTo8) res args
390 emitPrimOp res WriteByteArrayOp_WideChar args = doWriteByteArrayOp (Just mo_WordTo32) res args
391 emitPrimOp res WriteByteArrayOp_Int args = doWriteByteArrayOp Nothing res args
392 emitPrimOp res WriteByteArrayOp_Word args = doWriteByteArrayOp Nothing res args
393 emitPrimOp res WriteByteArrayOp_Addr args = doWriteByteArrayOp Nothing res args
394 emitPrimOp res WriteByteArrayOp_Float args = doWriteByteArrayOp Nothing res args
395 emitPrimOp res WriteByteArrayOp_Double args = doWriteByteArrayOp Nothing res args
396 emitPrimOp res WriteByteArrayOp_StablePtr args = doWriteByteArrayOp Nothing res args
397 emitPrimOp res WriteByteArrayOp_Int8 args = doWriteByteArrayOp (Just mo_WordTo8) res args
398 emitPrimOp res WriteByteArrayOp_Int16 args = doWriteByteArrayOp (Just mo_WordTo16) res args
399 emitPrimOp res WriteByteArrayOp_Int32 args = doWriteByteArrayOp (Just mo_WordTo32) res args
400 emitPrimOp res WriteByteArrayOp_Int64 args = doWriteByteArrayOp Nothing res args
401 emitPrimOp res WriteByteArrayOp_Word8 args = doWriteByteArrayOp (Just mo_WordTo8) res args
402 emitPrimOp res WriteByteArrayOp_Word16 args = doWriteByteArrayOp (Just mo_WordTo16) res args
403 emitPrimOp res WriteByteArrayOp_Word32 args = doWriteByteArrayOp (Just mo_WordTo32) res args
404 emitPrimOp res WriteByteArrayOp_Word64 args = doWriteByteArrayOp Nothing res args
407 -- The rest just translate straightforwardly
408 emitPrimOp [res] op [arg]
410 = emit (mkAssign (CmmLocal res) arg)
412 | Just (mop,rep) <- narrowOp op
413 = emit (mkAssign (CmmLocal res) $
414 CmmMachOp (mop rep wordWidth) [CmmMachOp (mop wordWidth rep) [arg]])
416 emitPrimOp [res] op args
417 | Just prim <- callishOp op
418 = do emitPrimCall res prim args
420 | Just mop <- translateOp op
421 = let stmt = mkAssign (CmmLocal res) (CmmMachOp mop args) in
425 = pprPanic "emitPrimOp: can't translate PrimOp" (ppr op)
428 -- These PrimOps are NOPs in Cmm
430 nopOp :: PrimOp -> Bool
431 nopOp Int2WordOp = True
432 nopOp Word2IntOp = True
433 nopOp Int2AddrOp = True
434 nopOp Addr2IntOp = True
435 nopOp ChrOp = True -- Int# and Char# are rep'd the same
439 -- These PrimOps turn into double casts
441 narrowOp :: PrimOp -> Maybe (Width -> Width -> MachOp, Width)
442 narrowOp Narrow8IntOp = Just (MO_SS_Conv, W8)
443 narrowOp Narrow16IntOp = Just (MO_SS_Conv, W16)
444 narrowOp Narrow32IntOp = Just (MO_SS_Conv, W32)
445 narrowOp Narrow8WordOp = Just (MO_UU_Conv, W8)
446 narrowOp Narrow16WordOp = Just (MO_UU_Conv, W16)
447 narrowOp Narrow32WordOp = Just (MO_UU_Conv, W32)
450 -- Native word signless ops
452 translateOp :: PrimOp -> Maybe MachOp
453 translateOp IntAddOp = Just mo_wordAdd
454 translateOp IntSubOp = Just mo_wordSub
455 translateOp WordAddOp = Just mo_wordAdd
456 translateOp WordSubOp = Just mo_wordSub
457 translateOp AddrAddOp = Just mo_wordAdd
458 translateOp AddrSubOp = Just mo_wordSub
460 translateOp IntEqOp = Just mo_wordEq
461 translateOp IntNeOp = Just mo_wordNe
462 translateOp WordEqOp = Just mo_wordEq
463 translateOp WordNeOp = Just mo_wordNe
464 translateOp AddrEqOp = Just mo_wordEq
465 translateOp AddrNeOp = Just mo_wordNe
467 translateOp AndOp = Just mo_wordAnd
468 translateOp OrOp = Just mo_wordOr
469 translateOp XorOp = Just mo_wordXor
470 translateOp NotOp = Just mo_wordNot
471 translateOp SllOp = Just mo_wordShl
472 translateOp SrlOp = Just mo_wordUShr
474 translateOp AddrRemOp = Just mo_wordURem
476 -- Native word signed ops
478 translateOp IntMulOp = Just mo_wordMul
479 translateOp IntMulMayOfloOp = Just (MO_S_MulMayOflo wordWidth)
480 translateOp IntQuotOp = Just mo_wordSQuot
481 translateOp IntRemOp = Just mo_wordSRem
482 translateOp IntNegOp = Just mo_wordSNeg
485 translateOp IntGeOp = Just mo_wordSGe
486 translateOp IntLeOp = Just mo_wordSLe
487 translateOp IntGtOp = Just mo_wordSGt
488 translateOp IntLtOp = Just mo_wordSLt
490 translateOp ISllOp = Just mo_wordShl
491 translateOp ISraOp = Just mo_wordSShr
492 translateOp ISrlOp = Just mo_wordUShr
494 -- Native word unsigned ops
496 translateOp WordGeOp = Just mo_wordUGe
497 translateOp WordLeOp = Just mo_wordULe
498 translateOp WordGtOp = Just mo_wordUGt
499 translateOp WordLtOp = Just mo_wordULt
501 translateOp WordMulOp = Just mo_wordMul
502 translateOp WordQuotOp = Just mo_wordUQuot
503 translateOp WordRemOp = Just mo_wordURem
505 translateOp AddrGeOp = Just mo_wordUGe
506 translateOp AddrLeOp = Just mo_wordULe
507 translateOp AddrGtOp = Just mo_wordUGt
508 translateOp AddrLtOp = Just mo_wordULt
512 translateOp CharEqOp = Just (MO_Eq wordWidth)
513 translateOp CharNeOp = Just (MO_Ne wordWidth)
514 translateOp CharGeOp = Just (MO_U_Ge wordWidth)
515 translateOp CharLeOp = Just (MO_U_Le wordWidth)
516 translateOp CharGtOp = Just (MO_U_Gt wordWidth)
517 translateOp CharLtOp = Just (MO_U_Lt wordWidth)
521 translateOp DoubleEqOp = Just (MO_F_Eq W64)
522 translateOp DoubleNeOp = Just (MO_F_Ne W64)
523 translateOp DoubleGeOp = Just (MO_F_Ge W64)
524 translateOp DoubleLeOp = Just (MO_F_Le W64)
525 translateOp DoubleGtOp = Just (MO_F_Gt W64)
526 translateOp DoubleLtOp = Just (MO_F_Lt W64)
528 translateOp DoubleAddOp = Just (MO_F_Add W64)
529 translateOp DoubleSubOp = Just (MO_F_Sub W64)
530 translateOp DoubleMulOp = Just (MO_F_Mul W64)
531 translateOp DoubleDivOp = Just (MO_F_Quot W64)
532 translateOp DoubleNegOp = Just (MO_F_Neg W64)
536 translateOp FloatEqOp = Just (MO_F_Eq W32)
537 translateOp FloatNeOp = Just (MO_F_Ne W32)
538 translateOp FloatGeOp = Just (MO_F_Ge W32)
539 translateOp FloatLeOp = Just (MO_F_Le W32)
540 translateOp FloatGtOp = Just (MO_F_Gt W32)
541 translateOp FloatLtOp = Just (MO_F_Lt W32)
543 translateOp FloatAddOp = Just (MO_F_Add W32)
544 translateOp FloatSubOp = Just (MO_F_Sub W32)
545 translateOp FloatMulOp = Just (MO_F_Mul W32)
546 translateOp FloatDivOp = Just (MO_F_Quot W32)
547 translateOp FloatNegOp = Just (MO_F_Neg W32)
551 translateOp Int2DoubleOp = Just (MO_SF_Conv wordWidth W64)
552 translateOp Double2IntOp = Just (MO_FS_Conv W64 wordWidth)
554 translateOp Int2FloatOp = Just (MO_SF_Conv wordWidth W32)
555 translateOp Float2IntOp = Just (MO_FS_Conv W32 wordWidth)
557 translateOp Float2DoubleOp = Just (MO_FF_Conv W32 W64)
558 translateOp Double2FloatOp = Just (MO_FF_Conv W64 W32)
560 -- Word comparisons masquerading as more exotic things.
562 translateOp SameMutVarOp = Just mo_wordEq
563 translateOp SameMVarOp = Just mo_wordEq
564 translateOp SameMutableArrayOp = Just mo_wordEq
565 translateOp SameMutableByteArrayOp = Just mo_wordEq
566 translateOp SameTVarOp = Just mo_wordEq
567 translateOp EqStablePtrOp = Just mo_wordEq
569 translateOp _ = Nothing
571 -- These primops are implemented by CallishMachOps, because they sometimes
572 -- turn into foreign calls depending on the backend.
574 callishOp :: PrimOp -> Maybe CallishMachOp
575 callishOp DoublePowerOp = Just MO_F64_Pwr
576 callishOp DoubleSinOp = Just MO_F64_Sin
577 callishOp DoubleCosOp = Just MO_F64_Cos
578 callishOp DoubleTanOp = Just MO_F64_Tan
579 callishOp DoubleSinhOp = Just MO_F64_Sinh
580 callishOp DoubleCoshOp = Just MO_F64_Cosh
581 callishOp DoubleTanhOp = Just MO_F64_Tanh
582 callishOp DoubleAsinOp = Just MO_F64_Asin
583 callishOp DoubleAcosOp = Just MO_F64_Acos
584 callishOp DoubleAtanOp = Just MO_F64_Atan
585 callishOp DoubleLogOp = Just MO_F64_Log
586 callishOp DoubleExpOp = Just MO_F64_Exp
587 callishOp DoubleSqrtOp = Just MO_F64_Sqrt
589 callishOp FloatPowerOp = Just MO_F32_Pwr
590 callishOp FloatSinOp = Just MO_F32_Sin
591 callishOp FloatCosOp = Just MO_F32_Cos
592 callishOp FloatTanOp = Just MO_F32_Tan
593 callishOp FloatSinhOp = Just MO_F32_Sinh
594 callishOp FloatCoshOp = Just MO_F32_Cosh
595 callishOp FloatTanhOp = Just MO_F32_Tanh
596 callishOp FloatAsinOp = Just MO_F32_Asin
597 callishOp FloatAcosOp = Just MO_F32_Acos
598 callishOp FloatAtanOp = Just MO_F32_Atan
599 callishOp FloatLogOp = Just MO_F32_Log
600 callishOp FloatExpOp = Just MO_F32_Exp
601 callishOp FloatSqrtOp = Just MO_F32_Sqrt
603 callishOp _ = Nothing
605 ------------------------------------------------------------------------------
606 -- Helpers for translating various minor variants of array indexing.
608 doIndexOffAddrOp :: Maybe MachOp -> CmmType -> [LocalReg] -> [CmmExpr] -> FCode ()
609 doIndexOffAddrOp maybe_post_read_cast rep [res] [addr,idx]
610 = mkBasicIndexedRead 0 maybe_post_read_cast rep res addr idx
611 doIndexOffAddrOp _ _ _ _
612 = panic "CgPrimOp: doIndexOffAddrOp"
614 doIndexByteArrayOp :: Maybe MachOp -> CmmType -> [LocalReg] -> [CmmExpr] -> FCode ()
615 doIndexByteArrayOp maybe_post_read_cast rep [res] [addr,idx]
616 = mkBasicIndexedRead arrWordsHdrSize maybe_post_read_cast rep res addr idx
617 doIndexByteArrayOp _ _ _ _
618 = panic "CgPrimOp: doIndexByteArrayOp"
620 doReadPtrArrayOp :: LocalReg -> CmmExpr -> CmmExpr -> FCode ()
621 doReadPtrArrayOp res addr idx
622 = mkBasicIndexedRead arrPtrsHdrSize Nothing gcWord res addr idx
625 doWriteOffAddrOp :: Maybe MachOp -> [LocalReg] -> [CmmExpr] -> FCode ()
626 doWriteOffAddrOp maybe_pre_write_cast [] [addr,idx,val]
627 = mkBasicIndexedWrite 0 maybe_pre_write_cast addr idx val
628 doWriteOffAddrOp _ _ _
629 = panic "CgPrimOp: doWriteOffAddrOp"
631 doWriteByteArrayOp :: Maybe MachOp -> [LocalReg] -> [CmmExpr] -> FCode ()
632 doWriteByteArrayOp maybe_pre_write_cast [] [addr,idx,val]
633 = mkBasicIndexedWrite arrWordsHdrSize maybe_pre_write_cast addr idx val
634 doWriteByteArrayOp _ _ _
635 = panic "CgPrimOp: doWriteByteArrayOp"
637 doWritePtrArrayOp :: CmmExpr -> CmmExpr -> CmmExpr -> FCode ()
638 doWritePtrArrayOp addr idx val
639 = do emit (setInfo addr (CmmLit (CmmLabel mkMAP_DIRTY_infoLabel)))
640 mkBasicIndexedWrite arrPtrsHdrSize Nothing addr idx val
642 mkBasicIndexedRead :: ByteOff -> Maybe MachOp -> CmmType
643 -> LocalReg -> CmmExpr -> CmmExpr -> FCode ()
644 mkBasicIndexedRead off Nothing read_rep res base idx
645 = emit (mkAssign (CmmLocal res) (cmmLoadIndexOffExpr off read_rep base idx))
646 mkBasicIndexedRead off (Just cast) read_rep res base idx
647 = emit (mkAssign (CmmLocal res) (CmmMachOp cast [
648 cmmLoadIndexOffExpr off read_rep base idx]))
650 mkBasicIndexedWrite :: ByteOff -> Maybe MachOp
651 -> CmmExpr -> CmmExpr -> CmmExpr -> FCode ()
652 mkBasicIndexedWrite off Nothing base idx val
653 = emit (mkStore (cmmIndexOffExpr off (typeWidth (cmmExprType val)) base idx) val)
654 mkBasicIndexedWrite off (Just cast) base idx val
655 = mkBasicIndexedWrite off Nothing base idx (CmmMachOp cast [val])
657 -- ----------------------------------------------------------------------------
660 cmmIndexOffExpr :: ByteOff -> Width -> CmmExpr -> CmmExpr -> CmmExpr
661 cmmIndexOffExpr off width base idx
662 = cmmIndexExpr width (cmmOffsetB base off) idx
664 cmmLoadIndexOffExpr :: ByteOff -> CmmType -> CmmExpr -> CmmExpr -> CmmExpr
665 cmmLoadIndexOffExpr off ty base idx
666 = CmmLoad (cmmIndexOffExpr off (typeWidth ty) base idx) ty
668 setInfo :: CmmExpr -> CmmExpr -> CmmAGraph
669 setInfo closure_ptr info_ptr = mkStore closure_ptr info_ptr