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 )
34 ------------------------------------------------------------------------
35 -- Primitive operations and foreign calls
36 ------------------------------------------------------------------------
38 {- Note [Foreign call results]
39 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
40 A foreign call always returns an unboxed tuple of results, one
41 of which is the state token. This seems to happen even for pure
44 Even if we returned a single result for pure calls, it'd still be
45 right to wrap it in a singleton unboxed tuple, because the result
46 might be a Haskell closure pointer, we don't want to evaluate it. -}
48 ----------------------------------
49 cgOpApp :: StgOp -- The op
50 -> [StgArg] -- Arguments
51 -> Type -- Result type (always an unboxed tuple)
55 cgOpApp (StgFCallOp fcall _) stg_args res_ty
56 = do { (res_regs, res_hints) <- newUnboxedTupleRegs res_ty
57 -- Choose result regs r1, r2
58 -- Note [Foreign call results]
59 ; cgForeignCall res_regs res_hints fcall stg_args
60 -- r1, r2 = foo( x, y )
61 ; emitReturn (map (CmmReg . CmmLocal) res_regs) }
64 -- tagToEnum# is special: we need to pull the constructor
65 -- out of the table, and perform an appropriate return.
67 cgOpApp (StgPrimOp TagToEnumOp) [arg] res_ty
68 = ASSERT(isEnumerationTyCon tycon)
69 do { args' <- getNonVoidArgAmodes [arg]
70 ; let amode = case args' of [amode] -> amode
71 _ -> panic "TagToEnumOp had void arg"
72 ; emitReturn [tagToClosure tycon amode] }
74 -- If you're reading this code in the attempt to figure
75 -- out why the compiler panic'ed here, it is probably because
76 -- you used tagToEnum# in a non-monomorphic setting, e.g.,
77 -- intToTg :: Enum a => Int -> a ; intToTg (I# x#) = tagToEnum# x#
79 tycon = tyConAppTyCon res_ty
81 cgOpApp (StgPrimOp primop) args res_ty
82 | primOpOutOfLine primop
83 = do { cmm_args <- getNonVoidArgAmodes args
84 ; let fun = CmmLit (CmmLabel (mkRtsPrimOpLabel primop))
85 ; emitCall (PrimOpCall, PrimOpReturn) fun cmm_args }
87 | ReturnsPrim VoidRep <- result_info
88 = do cgPrimOp [] primop args
91 | ReturnsPrim rep <- result_info
92 = do res <- newTemp (primRepCmmType rep)
93 cgPrimOp [res] primop args
94 emitReturn [CmmReg (CmmLocal res)]
96 | ReturnsAlg tycon <- result_info, isUnboxedTupleTyCon tycon
97 = do (regs, _hints) <- newUnboxedTupleRegs res_ty
98 cgPrimOp regs primop args
99 emitReturn (map (CmmReg . CmmLocal) regs)
101 | ReturnsAlg tycon <- result_info
102 , isEnumerationTyCon tycon
103 -- c.f. cgExpr (...TagToEnumOp...)
104 = do tag_reg <- newTemp bWord
105 cgPrimOp [tag_reg] primop args
106 emitReturn [tagToClosure tycon
107 (CmmReg (CmmLocal tag_reg))]
109 | otherwise = panic "cgPrimop"
111 result_info = getPrimOpResultInfo primop
113 cgOpApp (StgPrimCallOp primcall) args _res_ty
114 = do { cmm_args <- getNonVoidArgAmodes args
115 ; let fun = CmmLit (CmmLabel (mkPrimCallLabel primcall))
116 ; emitCall (PrimOpCall, PrimOpReturn) fun cmm_args }
118 ---------------------------------------------------
119 cgPrimOp :: [LocalReg] -- where to put the results
121 -> [StgArg] -- arguments
124 cgPrimOp results op args
125 = do arg_exprs <- getNonVoidArgAmodes args
126 emitPrimOp results op arg_exprs
129 ------------------------------------------------------------------------
130 -- Emitting code for a primop
131 ------------------------------------------------------------------------
133 emitPrimOp :: [LocalReg] -- where to put the results
135 -> [CmmExpr] -- arguments
138 -- First we handle various awkward cases specially. The remaining
139 -- easy cases are then handled by translateOp, defined below.
141 emitPrimOp [res_r,res_c] IntAddCOp [aa,bb]
143 With some bit-twiddling, we can define int{Add,Sub}Czh portably in
144 C, and without needing any comparisons. This may not be the
145 fastest way to do it - if you have better code, please send it! --SDM
147 Return : r = a + b, c = 0 if no overflow, 1 on overflow.
149 We currently don't make use of the r value if c is != 0 (i.e.
150 overflow), we just convert to big integers and try again. This
151 could be improved by making r and c the correct values for
152 plugging into a new J#.
154 { r = ((I_)(a)) + ((I_)(b)); \
155 c = ((StgWord)(~(((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
156 >> (BITS_IN (I_) - 1); \
158 Wading through the mass of bracketry, it seems to reduce to:
159 c = ( (~(a^b)) & (a^r) ) >>unsigned (BITS_IN(I_)-1)
162 = emit $ catAGraphs [
163 mkAssign (CmmLocal res_r) (CmmMachOp mo_wordAdd [aa,bb]),
164 mkAssign (CmmLocal res_c) $
165 CmmMachOp mo_wordUShr [
166 CmmMachOp mo_wordAnd [
167 CmmMachOp mo_wordNot [CmmMachOp mo_wordXor [aa,bb]],
168 CmmMachOp mo_wordXor [aa, CmmReg (CmmLocal res_r)]
170 CmmLit (mkIntCLit (wORD_SIZE_IN_BITS - 1))
175 emitPrimOp [res_r,res_c] IntSubCOp [aa,bb]
177 #define subIntCzh(r,c,a,b) \
178 { r = ((I_)(a)) - ((I_)(b)); \
179 c = ((StgWord)((((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
180 >> (BITS_IN (I_) - 1); \
183 c = ((a^b) & (a^r)) >>unsigned (BITS_IN(I_)-1)
185 = emit $ catAGraphs [
186 mkAssign (CmmLocal res_r) (CmmMachOp mo_wordSub [aa,bb]),
187 mkAssign (CmmLocal res_c) $
188 CmmMachOp mo_wordUShr [
189 CmmMachOp mo_wordAnd [
190 CmmMachOp mo_wordXor [aa,bb],
191 CmmMachOp mo_wordXor [aa, CmmReg (CmmLocal res_r)]
193 CmmLit (mkIntCLit (wORD_SIZE_IN_BITS - 1))
198 emitPrimOp [res] ParOp [arg]
200 -- for now, just implement this in a C function
201 -- later, we might want to inline it.
204 (CmmLit (CmmLabel (mkRtsCodeLabel (sLit "newSpark"))))
205 [(CmmReg (CmmGlobal BaseReg), AddrHint), (arg,AddrHint)]
207 emitPrimOp [res] ReadMutVarOp [mutv]
208 = emit (mkAssign (CmmLocal res) (cmmLoadIndexW mutv fixedHdrSize gcWord))
210 emitPrimOp [] WriteMutVarOp [mutv,var]
212 emit (mkStore (cmmOffsetW mutv fixedHdrSize) var)
215 (CmmLit (CmmLabel mkDirty_MUT_VAR_Label))
216 [(CmmReg (CmmGlobal BaseReg), AddrHint), (mutv,AddrHint)]
218 -- #define sizzeofByteArrayzh(r,a) \
219 -- r = (((StgArrWords *)(a))->words * sizeof(W_))
220 emitPrimOp [res] SizeofByteArrayOp [arg]
222 mkAssign (CmmLocal res) (CmmMachOp mo_wordMul [
223 cmmLoadIndexW arg fixedHdrSize bWord,
224 CmmLit (mkIntCLit wORD_SIZE)
227 -- #define sizzeofMutableByteArrayzh(r,a) \
228 -- r = (((StgArrWords *)(a))->words * sizeof(W_))
229 emitPrimOp [res] SizeofMutableByteArrayOp [arg]
230 = emitPrimOp [res] SizeofByteArrayOp [arg]
233 -- #define touchzh(o) /* nothing */
234 emitPrimOp [] TouchOp [_arg]
237 -- #define byteArrayContentszh(r,a) r = BYTE_ARR_CTS(a)
238 emitPrimOp [res] ByteArrayContents_Char [arg]
239 = emit (mkAssign (CmmLocal res) (cmmOffsetB arg arrWordsHdrSize))
241 -- #define stableNameToIntzh(r,s) (r = ((StgStableName *)s)->sn)
242 emitPrimOp [res] StableNameToIntOp [arg]
243 = emit (mkAssign (CmmLocal res) (cmmLoadIndexW arg fixedHdrSize bWord))
245 -- #define eqStableNamezh(r,sn1,sn2) \
246 -- (r = (((StgStableName *)sn1)->sn == ((StgStableName *)sn2)->sn))
247 emitPrimOp [res] EqStableNameOp [arg1,arg2]
248 = emit (mkAssign (CmmLocal res) (CmmMachOp mo_wordEq [
249 cmmLoadIndexW arg1 fixedHdrSize bWord,
250 cmmLoadIndexW arg2 fixedHdrSize bWord
254 emitPrimOp [res] ReallyUnsafePtrEqualityOp [arg1,arg2]
255 = emit (mkAssign (CmmLocal res) (CmmMachOp mo_wordEq [arg1,arg2]))
257 -- #define addrToHValuezh(r,a) r=(P_)a
258 emitPrimOp [res] AddrToHValueOp [arg]
259 = emit (mkAssign (CmmLocal res) arg)
261 -- #define dataToTagzh(r,a) r=(GET_TAG(((StgClosure *)a)->header.info))
262 -- Note: argument may be tagged!
263 emitPrimOp [res] DataToTagOp [arg]
264 = emit (mkAssign (CmmLocal res) (getConstrTag (cmmUntag arg)))
266 {- Freezing arrays-of-ptrs requires changing an info table, for the
267 benefit of the generational collector. It needs to scavenge mutable
268 objects, even if they are in old space. When they become immutable,
269 they can be removed from this scavenge list. -}
271 -- #define unsafeFreezzeArrayzh(r,a)
273 -- SET_INFO((StgClosure *)a,&stg_MUT_ARR_PTRS_FROZEN0_info);
276 emitPrimOp [res] UnsafeFreezeArrayOp [arg]
278 [ setInfo arg (CmmLit (CmmLabel mkMAP_FROZEN_infoLabel)),
279 mkAssign (CmmLocal res) arg ]
281 -- #define unsafeFreezzeByteArrayzh(r,a) r=(a)
282 emitPrimOp [res] UnsafeFreezeByteArrayOp [arg]
283 = emit (mkAssign (CmmLocal res) arg)
285 -- Reading/writing pointer arrays
287 emitPrimOp [r] ReadArrayOp [obj,ix] = doReadPtrArrayOp r obj ix
288 emitPrimOp [r] IndexArrayOp [obj,ix] = doReadPtrArrayOp r obj ix
289 emitPrimOp [] WriteArrayOp [obj,ix,v] = doWritePtrArrayOp obj ix v
293 emitPrimOp res IndexOffAddrOp_Char args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
294 emitPrimOp res IndexOffAddrOp_WideChar args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
295 emitPrimOp res IndexOffAddrOp_Int args = doIndexOffAddrOp Nothing bWord res args
296 emitPrimOp res IndexOffAddrOp_Word args = doIndexOffAddrOp Nothing bWord res args
297 emitPrimOp res IndexOffAddrOp_Addr args = doIndexOffAddrOp Nothing bWord res args
298 emitPrimOp res IndexOffAddrOp_Float args = doIndexOffAddrOp Nothing f32 res args
299 emitPrimOp res IndexOffAddrOp_Double args = doIndexOffAddrOp Nothing f64 res args
300 emitPrimOp res IndexOffAddrOp_StablePtr args = doIndexOffAddrOp Nothing bWord res args
301 emitPrimOp res IndexOffAddrOp_Int8 args = doIndexOffAddrOp (Just mo_s_8ToWord) b8 res args
302 emitPrimOp res IndexOffAddrOp_Int16 args = doIndexOffAddrOp (Just mo_s_16ToWord) b16 res args
303 emitPrimOp res IndexOffAddrOp_Int32 args = doIndexOffAddrOp (Just mo_s_32ToWord) b32 res args
304 emitPrimOp res IndexOffAddrOp_Int64 args = doIndexOffAddrOp Nothing b64 res args
305 emitPrimOp res IndexOffAddrOp_Word8 args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
306 emitPrimOp res IndexOffAddrOp_Word16 args = doIndexOffAddrOp (Just mo_u_16ToWord) b16 res args
307 emitPrimOp res IndexOffAddrOp_Word32 args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
308 emitPrimOp res IndexOffAddrOp_Word64 args = doIndexOffAddrOp Nothing b64 res args
310 -- ReadXXXoffAddr, which are identical, for our purposes, to IndexXXXoffAddr.
312 emitPrimOp res ReadOffAddrOp_Char args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
313 emitPrimOp res ReadOffAddrOp_WideChar args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
314 emitPrimOp res ReadOffAddrOp_Int args = doIndexOffAddrOp Nothing bWord res args
315 emitPrimOp res ReadOffAddrOp_Word args = doIndexOffAddrOp Nothing bWord res args
316 emitPrimOp res ReadOffAddrOp_Addr args = doIndexOffAddrOp Nothing bWord res args
317 emitPrimOp res ReadOffAddrOp_Float args = doIndexOffAddrOp Nothing f32 res args
318 emitPrimOp res ReadOffAddrOp_Double args = doIndexOffAddrOp Nothing f64 res args
319 emitPrimOp res ReadOffAddrOp_StablePtr args = doIndexOffAddrOp Nothing bWord res args
320 emitPrimOp res ReadOffAddrOp_Int8 args = doIndexOffAddrOp (Just mo_s_8ToWord) b8 res args
321 emitPrimOp res ReadOffAddrOp_Int16 args = doIndexOffAddrOp (Just mo_s_16ToWord) b16 res args
322 emitPrimOp res ReadOffAddrOp_Int32 args = doIndexOffAddrOp (Just mo_s_32ToWord) b32 res args
323 emitPrimOp res ReadOffAddrOp_Int64 args = doIndexOffAddrOp Nothing b64 res args
324 emitPrimOp res ReadOffAddrOp_Word8 args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
325 emitPrimOp res ReadOffAddrOp_Word16 args = doIndexOffAddrOp (Just mo_u_16ToWord) b16 res args
326 emitPrimOp res ReadOffAddrOp_Word32 args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
327 emitPrimOp res ReadOffAddrOp_Word64 args = doIndexOffAddrOp Nothing b64 res args
331 emitPrimOp res IndexByteArrayOp_Char args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
332 emitPrimOp res IndexByteArrayOp_WideChar args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
333 emitPrimOp res IndexByteArrayOp_Int args = doIndexByteArrayOp Nothing bWord res args
334 emitPrimOp res IndexByteArrayOp_Word args = doIndexByteArrayOp Nothing bWord res args
335 emitPrimOp res IndexByteArrayOp_Addr args = doIndexByteArrayOp Nothing bWord res args
336 emitPrimOp res IndexByteArrayOp_Float args = doIndexByteArrayOp Nothing f32 res args
337 emitPrimOp res IndexByteArrayOp_Double args = doIndexByteArrayOp Nothing f64 res args
338 emitPrimOp res IndexByteArrayOp_StablePtr args = doIndexByteArrayOp Nothing bWord res args
339 emitPrimOp res IndexByteArrayOp_Int8 args = doIndexByteArrayOp (Just mo_s_8ToWord) b8 res args
340 emitPrimOp res IndexByteArrayOp_Int16 args = doIndexByteArrayOp (Just mo_s_16ToWord) b16 res args
341 emitPrimOp res IndexByteArrayOp_Int32 args = doIndexByteArrayOp (Just mo_s_32ToWord) b32 res args
342 emitPrimOp res IndexByteArrayOp_Int64 args = doIndexByteArrayOp Nothing b64 res args
343 emitPrimOp res IndexByteArrayOp_Word8 args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
344 emitPrimOp res IndexByteArrayOp_Word16 args = doIndexByteArrayOp (Just mo_u_16ToWord) b16 res args
345 emitPrimOp res IndexByteArrayOp_Word32 args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
346 emitPrimOp res IndexByteArrayOp_Word64 args = doIndexByteArrayOp Nothing b64 res args
348 -- ReadXXXArray, identical to IndexXXXArray.
350 emitPrimOp res ReadByteArrayOp_Char args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
351 emitPrimOp res ReadByteArrayOp_WideChar args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
352 emitPrimOp res ReadByteArrayOp_Int args = doIndexByteArrayOp Nothing bWord res args
353 emitPrimOp res ReadByteArrayOp_Word args = doIndexByteArrayOp Nothing bWord res args
354 emitPrimOp res ReadByteArrayOp_Addr args = doIndexByteArrayOp Nothing bWord res args
355 emitPrimOp res ReadByteArrayOp_Float args = doIndexByteArrayOp Nothing f32 res args
356 emitPrimOp res ReadByteArrayOp_Double args = doIndexByteArrayOp Nothing f64 res args
357 emitPrimOp res ReadByteArrayOp_StablePtr args = doIndexByteArrayOp Nothing bWord res args
358 emitPrimOp res ReadByteArrayOp_Int8 args = doIndexByteArrayOp (Just mo_s_8ToWord) b8 res args
359 emitPrimOp res ReadByteArrayOp_Int16 args = doIndexByteArrayOp (Just mo_s_16ToWord) b16 res args
360 emitPrimOp res ReadByteArrayOp_Int32 args = doIndexByteArrayOp (Just mo_s_32ToWord) b32 res args
361 emitPrimOp res ReadByteArrayOp_Int64 args = doIndexByteArrayOp Nothing b64 res args
362 emitPrimOp res ReadByteArrayOp_Word8 args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
363 emitPrimOp res ReadByteArrayOp_Word16 args = doIndexByteArrayOp (Just mo_u_16ToWord) b16 res args
364 emitPrimOp res ReadByteArrayOp_Word32 args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
365 emitPrimOp res ReadByteArrayOp_Word64 args = doIndexByteArrayOp Nothing b64 res args
369 emitPrimOp res WriteOffAddrOp_Char args = doWriteOffAddrOp (Just mo_WordTo8) res args
370 emitPrimOp res WriteOffAddrOp_WideChar args = doWriteOffAddrOp (Just mo_WordTo32) res args
371 emitPrimOp res WriteOffAddrOp_Int args = doWriteOffAddrOp Nothing res args
372 emitPrimOp res WriteOffAddrOp_Word args = doWriteOffAddrOp Nothing res args
373 emitPrimOp res WriteOffAddrOp_Addr args = doWriteOffAddrOp Nothing res args
374 emitPrimOp res WriteOffAddrOp_Float args = doWriteOffAddrOp Nothing res args
375 emitPrimOp res WriteOffAddrOp_Double args = doWriteOffAddrOp Nothing res args
376 emitPrimOp res WriteOffAddrOp_StablePtr args = doWriteOffAddrOp Nothing res args
377 emitPrimOp res WriteOffAddrOp_Int8 args = doWriteOffAddrOp (Just mo_WordTo8) res args
378 emitPrimOp res WriteOffAddrOp_Int16 args = doWriteOffAddrOp (Just mo_WordTo16) res args
379 emitPrimOp res WriteOffAddrOp_Int32 args = doWriteOffAddrOp (Just mo_WordTo32) res args
380 emitPrimOp res WriteOffAddrOp_Int64 args = doWriteOffAddrOp Nothing res args
381 emitPrimOp res WriteOffAddrOp_Word8 args = doWriteOffAddrOp (Just mo_WordTo8) res args
382 emitPrimOp res WriteOffAddrOp_Word16 args = doWriteOffAddrOp (Just mo_WordTo16) res args
383 emitPrimOp res WriteOffAddrOp_Word32 args = doWriteOffAddrOp (Just mo_WordTo32) res args
384 emitPrimOp res WriteOffAddrOp_Word64 args = doWriteOffAddrOp Nothing res args
388 emitPrimOp res WriteByteArrayOp_Char args = doWriteByteArrayOp (Just mo_WordTo8) res args
389 emitPrimOp res WriteByteArrayOp_WideChar args = doWriteByteArrayOp (Just mo_WordTo32) res args
390 emitPrimOp res WriteByteArrayOp_Int args = doWriteByteArrayOp Nothing res args
391 emitPrimOp res WriteByteArrayOp_Word args = doWriteByteArrayOp Nothing res args
392 emitPrimOp res WriteByteArrayOp_Addr args = doWriteByteArrayOp Nothing res args
393 emitPrimOp res WriteByteArrayOp_Float args = doWriteByteArrayOp Nothing res args
394 emitPrimOp res WriteByteArrayOp_Double args = doWriteByteArrayOp Nothing res args
395 emitPrimOp res WriteByteArrayOp_StablePtr args = doWriteByteArrayOp Nothing res args
396 emitPrimOp res WriteByteArrayOp_Int8 args = doWriteByteArrayOp (Just mo_WordTo8) res args
397 emitPrimOp res WriteByteArrayOp_Int16 args = doWriteByteArrayOp (Just mo_WordTo16) res args
398 emitPrimOp res WriteByteArrayOp_Int32 args = doWriteByteArrayOp (Just mo_WordTo32) res args
399 emitPrimOp res WriteByteArrayOp_Int64 args = doWriteByteArrayOp Nothing res args
400 emitPrimOp res WriteByteArrayOp_Word8 args = doWriteByteArrayOp (Just mo_WordTo8) res args
401 emitPrimOp res WriteByteArrayOp_Word16 args = doWriteByteArrayOp (Just mo_WordTo16) res args
402 emitPrimOp res WriteByteArrayOp_Word32 args = doWriteByteArrayOp (Just mo_WordTo32) res args
403 emitPrimOp res WriteByteArrayOp_Word64 args = doWriteByteArrayOp Nothing res args
406 -- The rest just translate straightforwardly
407 emitPrimOp [res] op [arg]
409 = emit (mkAssign (CmmLocal res) arg)
411 | Just (mop,rep) <- narrowOp op
412 = emit (mkAssign (CmmLocal res) $
413 CmmMachOp (mop rep wordWidth) [CmmMachOp (mop wordWidth rep) [arg]])
415 emitPrimOp [res] op args
416 | Just prim <- callishOp op
417 = do emitPrimCall res prim args
419 | Just mop <- translateOp op
420 = let stmt = mkAssign (CmmLocal res) (CmmMachOp mop args) in
424 = pprPanic "emitPrimOp: can't translate PrimOp" (ppr op)
427 -- These PrimOps are NOPs in Cmm
429 nopOp :: PrimOp -> Bool
430 nopOp Int2WordOp = True
431 nopOp Word2IntOp = True
432 nopOp Int2AddrOp = True
433 nopOp Addr2IntOp = True
434 nopOp ChrOp = True -- Int# and Char# are rep'd the same
438 -- These PrimOps turn into double casts
440 narrowOp :: PrimOp -> Maybe (Width -> Width -> MachOp, Width)
441 narrowOp Narrow8IntOp = Just (MO_SS_Conv, W8)
442 narrowOp Narrow16IntOp = Just (MO_SS_Conv, W16)
443 narrowOp Narrow32IntOp = Just (MO_SS_Conv, W32)
444 narrowOp Narrow8WordOp = Just (MO_UU_Conv, W8)
445 narrowOp Narrow16WordOp = Just (MO_UU_Conv, W16)
446 narrowOp Narrow32WordOp = Just (MO_UU_Conv, W32)
449 -- Native word signless ops
451 translateOp :: PrimOp -> Maybe MachOp
452 translateOp IntAddOp = Just mo_wordAdd
453 translateOp IntSubOp = Just mo_wordSub
454 translateOp WordAddOp = Just mo_wordAdd
455 translateOp WordSubOp = Just mo_wordSub
456 translateOp AddrAddOp = Just mo_wordAdd
457 translateOp AddrSubOp = Just mo_wordSub
459 translateOp IntEqOp = Just mo_wordEq
460 translateOp IntNeOp = Just mo_wordNe
461 translateOp WordEqOp = Just mo_wordEq
462 translateOp WordNeOp = Just mo_wordNe
463 translateOp AddrEqOp = Just mo_wordEq
464 translateOp AddrNeOp = Just mo_wordNe
466 translateOp AndOp = Just mo_wordAnd
467 translateOp OrOp = Just mo_wordOr
468 translateOp XorOp = Just mo_wordXor
469 translateOp NotOp = Just mo_wordNot
470 translateOp SllOp = Just mo_wordShl
471 translateOp SrlOp = Just mo_wordUShr
473 translateOp AddrRemOp = Just mo_wordURem
475 -- Native word signed ops
477 translateOp IntMulOp = Just mo_wordMul
478 translateOp IntMulMayOfloOp = Just (MO_S_MulMayOflo wordWidth)
479 translateOp IntQuotOp = Just mo_wordSQuot
480 translateOp IntRemOp = Just mo_wordSRem
481 translateOp IntNegOp = Just mo_wordSNeg
484 translateOp IntGeOp = Just mo_wordSGe
485 translateOp IntLeOp = Just mo_wordSLe
486 translateOp IntGtOp = Just mo_wordSGt
487 translateOp IntLtOp = Just mo_wordSLt
489 translateOp ISllOp = Just mo_wordShl
490 translateOp ISraOp = Just mo_wordSShr
491 translateOp ISrlOp = Just mo_wordUShr
493 -- Native word unsigned ops
495 translateOp WordGeOp = Just mo_wordUGe
496 translateOp WordLeOp = Just mo_wordULe
497 translateOp WordGtOp = Just mo_wordUGt
498 translateOp WordLtOp = Just mo_wordULt
500 translateOp WordMulOp = Just mo_wordMul
501 translateOp WordQuotOp = Just mo_wordUQuot
502 translateOp WordRemOp = Just mo_wordURem
504 translateOp AddrGeOp = Just mo_wordUGe
505 translateOp AddrLeOp = Just mo_wordULe
506 translateOp AddrGtOp = Just mo_wordUGt
507 translateOp AddrLtOp = Just mo_wordULt
511 translateOp CharEqOp = Just (MO_Eq wordWidth)
512 translateOp CharNeOp = Just (MO_Ne wordWidth)
513 translateOp CharGeOp = Just (MO_U_Ge wordWidth)
514 translateOp CharLeOp = Just (MO_U_Le wordWidth)
515 translateOp CharGtOp = Just (MO_U_Gt wordWidth)
516 translateOp CharLtOp = Just (MO_U_Lt wordWidth)
520 translateOp DoubleEqOp = Just (MO_F_Eq W64)
521 translateOp DoubleNeOp = Just (MO_F_Ne W64)
522 translateOp DoubleGeOp = Just (MO_F_Ge W64)
523 translateOp DoubleLeOp = Just (MO_F_Le W64)
524 translateOp DoubleGtOp = Just (MO_F_Gt W64)
525 translateOp DoubleLtOp = Just (MO_F_Lt W64)
527 translateOp DoubleAddOp = Just (MO_F_Add W64)
528 translateOp DoubleSubOp = Just (MO_F_Sub W64)
529 translateOp DoubleMulOp = Just (MO_F_Mul W64)
530 translateOp DoubleDivOp = Just (MO_F_Quot W64)
531 translateOp DoubleNegOp = Just (MO_F_Neg W64)
535 translateOp FloatEqOp = Just (MO_F_Eq W32)
536 translateOp FloatNeOp = Just (MO_F_Ne W32)
537 translateOp FloatGeOp = Just (MO_F_Ge W32)
538 translateOp FloatLeOp = Just (MO_F_Le W32)
539 translateOp FloatGtOp = Just (MO_F_Gt W32)
540 translateOp FloatLtOp = Just (MO_F_Lt W32)
542 translateOp FloatAddOp = Just (MO_F_Add W32)
543 translateOp FloatSubOp = Just (MO_F_Sub W32)
544 translateOp FloatMulOp = Just (MO_F_Mul W32)
545 translateOp FloatDivOp = Just (MO_F_Quot W32)
546 translateOp FloatNegOp = Just (MO_F_Neg W32)
550 translateOp Int2DoubleOp = Just (MO_SF_Conv wordWidth W64)
551 translateOp Double2IntOp = Just (MO_FS_Conv W64 wordWidth)
553 translateOp Int2FloatOp = Just (MO_SF_Conv wordWidth W32)
554 translateOp Float2IntOp = Just (MO_FS_Conv W32 wordWidth)
556 translateOp Float2DoubleOp = Just (MO_FF_Conv W32 W64)
557 translateOp Double2FloatOp = Just (MO_FF_Conv W64 W32)
559 -- Word comparisons masquerading as more exotic things.
561 translateOp SameMutVarOp = Just mo_wordEq
562 translateOp SameMVarOp = Just mo_wordEq
563 translateOp SameMutableArrayOp = Just mo_wordEq
564 translateOp SameMutableByteArrayOp = Just mo_wordEq
565 translateOp SameTVarOp = Just mo_wordEq
566 translateOp EqStablePtrOp = Just mo_wordEq
568 translateOp _ = Nothing
570 -- These primops are implemented by CallishMachOps, because they sometimes
571 -- turn into foreign calls depending on the backend.
573 callishOp :: PrimOp -> Maybe CallishMachOp
574 callishOp DoublePowerOp = Just MO_F64_Pwr
575 callishOp DoubleSinOp = Just MO_F64_Sin
576 callishOp DoubleCosOp = Just MO_F64_Cos
577 callishOp DoubleTanOp = Just MO_F64_Tan
578 callishOp DoubleSinhOp = Just MO_F64_Sinh
579 callishOp DoubleCoshOp = Just MO_F64_Cosh
580 callishOp DoubleTanhOp = Just MO_F64_Tanh
581 callishOp DoubleAsinOp = Just MO_F64_Asin
582 callishOp DoubleAcosOp = Just MO_F64_Acos
583 callishOp DoubleAtanOp = Just MO_F64_Atan
584 callishOp DoubleLogOp = Just MO_F64_Log
585 callishOp DoubleExpOp = Just MO_F64_Exp
586 callishOp DoubleSqrtOp = Just MO_F64_Sqrt
588 callishOp FloatPowerOp = Just MO_F32_Pwr
589 callishOp FloatSinOp = Just MO_F32_Sin
590 callishOp FloatCosOp = Just MO_F32_Cos
591 callishOp FloatTanOp = Just MO_F32_Tan
592 callishOp FloatSinhOp = Just MO_F32_Sinh
593 callishOp FloatCoshOp = Just MO_F32_Cosh
594 callishOp FloatTanhOp = Just MO_F32_Tanh
595 callishOp FloatAsinOp = Just MO_F32_Asin
596 callishOp FloatAcosOp = Just MO_F32_Acos
597 callishOp FloatAtanOp = Just MO_F32_Atan
598 callishOp FloatLogOp = Just MO_F32_Log
599 callishOp FloatExpOp = Just MO_F32_Exp
600 callishOp FloatSqrtOp = Just MO_F32_Sqrt
602 callishOp _ = Nothing
604 ------------------------------------------------------------------------------
605 -- Helpers for translating various minor variants of array indexing.
607 doIndexOffAddrOp :: Maybe MachOp -> CmmType -> [LocalReg] -> [CmmExpr] -> FCode ()
608 doIndexOffAddrOp maybe_post_read_cast rep [res] [addr,idx]
609 = mkBasicIndexedRead 0 maybe_post_read_cast rep res addr idx
610 doIndexOffAddrOp _ _ _ _
611 = panic "CgPrimOp: doIndexOffAddrOp"
613 doIndexByteArrayOp :: Maybe MachOp -> CmmType -> [LocalReg] -> [CmmExpr] -> FCode ()
614 doIndexByteArrayOp maybe_post_read_cast rep [res] [addr,idx]
615 = mkBasicIndexedRead arrWordsHdrSize maybe_post_read_cast rep res addr idx
616 doIndexByteArrayOp _ _ _ _
617 = panic "CgPrimOp: doIndexByteArrayOp"
619 doReadPtrArrayOp :: LocalReg -> CmmExpr -> CmmExpr -> FCode ()
620 doReadPtrArrayOp res addr idx
621 = mkBasicIndexedRead arrPtrsHdrSize Nothing gcWord res addr idx
624 doWriteOffAddrOp :: Maybe MachOp -> [LocalReg] -> [CmmExpr] -> FCode ()
625 doWriteOffAddrOp maybe_pre_write_cast [] [addr,idx,val]
626 = mkBasicIndexedWrite 0 maybe_pre_write_cast addr idx val
627 doWriteOffAddrOp _ _ _
628 = panic "CgPrimOp: doWriteOffAddrOp"
630 doWriteByteArrayOp :: Maybe MachOp -> [LocalReg] -> [CmmExpr] -> FCode ()
631 doWriteByteArrayOp maybe_pre_write_cast [] [addr,idx,val]
632 = mkBasicIndexedWrite arrWordsHdrSize maybe_pre_write_cast addr idx val
633 doWriteByteArrayOp _ _ _
634 = panic "CgPrimOp: doWriteByteArrayOp"
636 doWritePtrArrayOp :: CmmExpr -> CmmExpr -> CmmExpr -> FCode ()
637 doWritePtrArrayOp addr idx val
638 = do emit (setInfo addr (CmmLit (CmmLabel mkMAP_DIRTY_infoLabel)))
639 mkBasicIndexedWrite arrPtrsHdrSize Nothing addr idx val
641 mkBasicIndexedRead :: ByteOff -> Maybe MachOp -> CmmType
642 -> LocalReg -> CmmExpr -> CmmExpr -> FCode ()
643 mkBasicIndexedRead off Nothing read_rep res base idx
644 = emit (mkAssign (CmmLocal res) (cmmLoadIndexOffExpr off read_rep base idx))
645 mkBasicIndexedRead off (Just cast) read_rep res base idx
646 = emit (mkAssign (CmmLocal res) (CmmMachOp cast [
647 cmmLoadIndexOffExpr off read_rep base idx]))
649 mkBasicIndexedWrite :: ByteOff -> Maybe MachOp
650 -> CmmExpr -> CmmExpr -> CmmExpr -> FCode ()
651 mkBasicIndexedWrite off Nothing base idx val
652 = emit (mkStore (cmmIndexOffExpr off (typeWidth (cmmExprType val)) base idx) val)
653 mkBasicIndexedWrite off (Just cast) base idx val
654 = mkBasicIndexedWrite off Nothing base idx (CmmMachOp cast [val])
656 -- ----------------------------------------------------------------------------
659 cmmIndexOffExpr :: ByteOff -> Width -> CmmExpr -> CmmExpr -> CmmExpr
660 cmmIndexOffExpr off width base idx
661 = cmmIndexExpr width (cmmOffsetB base off) idx
663 cmmLoadIndexOffExpr :: ByteOff -> CmmType -> CmmExpr -> CmmExpr -> CmmExpr
664 cmmLoadIndexOffExpr off ty base idx
665 = CmmLoad (cmmIndexOffExpr off (typeWidth ty) base idx) ty
667 setInfo :: CmmExpr -> CmmExpr -> CmmAGraph
668 setInfo closure_ptr info_ptr = mkStore closure_ptr info_ptr