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 { amode <- getArgAmode arg
70 ; emitReturn [tagToClosure tycon amode] }
72 -- If you're reading this code in the attempt to figure
73 -- out why the compiler panic'ed here, it is probably because
74 -- you used tagToEnum# in a non-monomorphic setting, e.g.,
75 -- intToTg :: Enum a => Int -> a ; intToTg (I# x#) = tagToEnum# x#
77 tycon = tyConAppTyCon res_ty
79 cgOpApp (StgPrimOp primop) args res_ty
80 | primOpOutOfLine primop
81 = do { cmm_args <- getNonVoidArgAmodes args
82 ; let fun = CmmLit (CmmLabel (mkRtsPrimOpLabel primop))
83 ; emitCall fun cmm_args }
85 | ReturnsPrim VoidRep <- result_info
86 = do cgPrimOp [] primop args
89 | ReturnsPrim rep <- result_info
90 = do res <- newTemp (primRepCmmType rep)
91 cgPrimOp [res] primop args
92 emitReturn [CmmReg (CmmLocal res)]
94 | ReturnsAlg tycon <- result_info, isUnboxedTupleTyCon tycon
95 = do (regs, _hints) <- newUnboxedTupleRegs res_ty
96 cgPrimOp regs primop args
97 emitReturn (map (CmmReg . CmmLocal) regs)
99 | ReturnsAlg tycon <- result_info
100 , isEnumerationTyCon tycon
101 -- c.f. cgExpr (...TagToEnumOp...)
102 = do tag_reg <- newTemp bWord
103 cgPrimOp [tag_reg] primop args
104 emitReturn [tagToClosure tycon
105 (CmmReg (CmmLocal tag_reg))]
107 | otherwise = panic "cgPrimop"
109 result_info = getPrimOpResultInfo primop
111 ---------------------------------------------------
112 cgPrimOp :: [LocalReg] -- where to put the results
114 -> [StgArg] -- arguments
117 cgPrimOp results op args
118 = do arg_exprs <- getNonVoidArgAmodes args
119 emitPrimOp results op arg_exprs
122 ------------------------------------------------------------------------
123 -- Emitting code for a primop
124 ------------------------------------------------------------------------
126 emitPrimOp :: [LocalReg] -- where to put the results
128 -> [CmmExpr] -- arguments
131 -- First we handle various awkward cases specially. The remaining
132 -- easy cases are then handled by translateOp, defined below.
134 emitPrimOp [res_r,res_c] IntAddCOp [aa,bb]
136 With some bit-twiddling, we can define int{Add,Sub}Czh portably in
137 C, and without needing any comparisons. This may not be the
138 fastest way to do it - if you have better code, please send it! --SDM
140 Return : r = a + b, c = 0 if no overflow, 1 on overflow.
142 We currently don't make use of the r value if c is != 0 (i.e.
143 overflow), we just convert to big integers and try again. This
144 could be improved by making r and c the correct values for
145 plugging into a new J#.
147 { r = ((I_)(a)) + ((I_)(b)); \
148 c = ((StgWord)(~(((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
149 >> (BITS_IN (I_) - 1); \
151 Wading through the mass of bracketry, it seems to reduce to:
152 c = ( (~(a^b)) & (a^r) ) >>unsigned (BITS_IN(I_)-1)
155 = emit $ catAGraphs [
156 mkAssign (CmmLocal res_r) (CmmMachOp mo_wordAdd [aa,bb]),
157 mkAssign (CmmLocal res_c) $
158 CmmMachOp mo_wordUShr [
159 CmmMachOp mo_wordAnd [
160 CmmMachOp mo_wordNot [CmmMachOp mo_wordXor [aa,bb]],
161 CmmMachOp mo_wordXor [aa, CmmReg (CmmLocal res_r)]
163 CmmLit (mkIntCLit (wORD_SIZE_IN_BITS - 1))
168 emitPrimOp [res_r,res_c] IntSubCOp [aa,bb]
170 #define subIntCzh(r,c,a,b) \
171 { r = ((I_)(a)) - ((I_)(b)); \
172 c = ((StgWord)((((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
173 >> (BITS_IN (I_) - 1); \
176 c = ((a^b) & (a^r)) >>unsigned (BITS_IN(I_)-1)
178 = emit $ catAGraphs [
179 mkAssign (CmmLocal res_r) (CmmMachOp mo_wordSub [aa,bb]),
180 mkAssign (CmmLocal res_c) $
181 CmmMachOp mo_wordUShr [
182 CmmMachOp mo_wordAnd [
183 CmmMachOp mo_wordXor [aa,bb],
184 CmmMachOp mo_wordXor [aa, CmmReg (CmmLocal res_r)]
186 CmmLit (mkIntCLit (wORD_SIZE_IN_BITS - 1))
191 emitPrimOp [res] ParOp [arg]
193 -- for now, just implement this in a C function
194 -- later, we might want to inline it.
197 (CmmLit (CmmLabel (mkRtsCodeLabel (sLit "newSpark"))))
198 [(CmmReg (CmmGlobal BaseReg), AddrHint), (arg,AddrHint)]
200 emitPrimOp [res] ReadMutVarOp [mutv]
201 = emit (mkAssign (CmmLocal res) (cmmLoadIndexW mutv fixedHdrSize gcWord))
203 emitPrimOp [] WriteMutVarOp [mutv,var]
205 emit (mkStore (cmmOffsetW mutv fixedHdrSize) var)
208 (CmmLit (CmmLabel mkDirty_MUT_VAR_Label))
209 [(CmmReg (CmmGlobal BaseReg), AddrHint), (mutv,AddrHint)]
211 -- #define sizzeofByteArrayzh(r,a) \
212 -- r = (((StgArrWords *)(a))->words * sizeof(W_))
213 emitPrimOp [res] SizeofByteArrayOp [arg]
215 mkAssign (CmmLocal res) (CmmMachOp mo_wordMul [
216 cmmLoadIndexW arg fixedHdrSize bWord,
217 CmmLit (mkIntCLit wORD_SIZE)
220 -- #define sizzeofMutableByteArrayzh(r,a) \
221 -- r = (((StgArrWords *)(a))->words * sizeof(W_))
222 emitPrimOp [res] SizeofMutableByteArrayOp [arg]
223 = emitPrimOp [res] SizeofByteArrayOp [arg]
226 -- #define touchzh(o) /* nothing */
227 emitPrimOp [] TouchOp [_arg]
230 -- #define byteArrayContentszh(r,a) r = BYTE_ARR_CTS(a)
231 emitPrimOp [res] ByteArrayContents_Char [arg]
232 = emit (mkAssign (CmmLocal res) (cmmOffsetB arg arrWordsHdrSize))
234 -- #define stableNameToIntzh(r,s) (r = ((StgStableName *)s)->sn)
235 emitPrimOp [res] StableNameToIntOp [arg]
236 = emit (mkAssign (CmmLocal res) (cmmLoadIndexW arg fixedHdrSize bWord))
238 -- #define eqStableNamezh(r,sn1,sn2) \
239 -- (r = (((StgStableName *)sn1)->sn == ((StgStableName *)sn2)->sn))
240 emitPrimOp [res] EqStableNameOp [arg1,arg2]
241 = emit (mkAssign (CmmLocal res) (CmmMachOp mo_wordEq [
242 cmmLoadIndexW arg1 fixedHdrSize bWord,
243 cmmLoadIndexW arg2 fixedHdrSize bWord
247 emitPrimOp [res] ReallyUnsafePtrEqualityOp [arg1,arg2]
248 = emit (mkAssign (CmmLocal res) (CmmMachOp mo_wordEq [arg1,arg2]))
250 -- #define addrToHValuezh(r,a) r=(P_)a
251 emitPrimOp [res] AddrToHValueOp [arg]
252 = emit (mkAssign (CmmLocal res) arg)
254 -- #define dataToTagzh(r,a) r=(GET_TAG(((StgClosure *)a)->header.info))
255 -- Note: argument may be tagged!
256 emitPrimOp [res] DataToTagOp [arg]
257 = emit (mkAssign (CmmLocal res) (getConstrTag (cmmUntag arg)))
259 {- Freezing arrays-of-ptrs requires changing an info table, for the
260 benefit of the generational collector. It needs to scavenge mutable
261 objects, even if they are in old space. When they become immutable,
262 they can be removed from this scavenge list. -}
264 -- #define unsafeFreezzeArrayzh(r,a)
266 -- SET_INFO((StgClosure *)a,&stg_MUT_ARR_PTRS_FROZEN0_info);
269 emitPrimOp [res] UnsafeFreezeArrayOp [arg]
271 [ setInfo arg (CmmLit (CmmLabel mkMAP_FROZEN_infoLabel)),
272 mkAssign (CmmLocal res) arg ]
274 -- #define unsafeFreezzeByteArrayzh(r,a) r=(a)
275 emitPrimOp [res] UnsafeFreezeByteArrayOp [arg]
276 = emit (mkAssign (CmmLocal res) arg)
278 -- Reading/writing pointer arrays
280 emitPrimOp [r] ReadArrayOp [obj,ix] = doReadPtrArrayOp r obj ix
281 emitPrimOp [r] IndexArrayOp [obj,ix] = doReadPtrArrayOp r obj ix
282 emitPrimOp [] WriteArrayOp [obj,ix,v] = doWritePtrArrayOp obj ix v
286 emitPrimOp res IndexOffAddrOp_Char args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
287 emitPrimOp res IndexOffAddrOp_WideChar args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
288 emitPrimOp res IndexOffAddrOp_Int args = doIndexOffAddrOp Nothing bWord res args
289 emitPrimOp res IndexOffAddrOp_Word args = doIndexOffAddrOp Nothing bWord res args
290 emitPrimOp res IndexOffAddrOp_Addr args = doIndexOffAddrOp Nothing bWord res args
291 emitPrimOp res IndexOffAddrOp_Float args = doIndexOffAddrOp Nothing f32 res args
292 emitPrimOp res IndexOffAddrOp_Double args = doIndexOffAddrOp Nothing f64 res args
293 emitPrimOp res IndexOffAddrOp_StablePtr args = doIndexOffAddrOp Nothing bWord res args
294 emitPrimOp res IndexOffAddrOp_Int8 args = doIndexOffAddrOp (Just mo_s_8ToWord) b8 res args
295 emitPrimOp res IndexOffAddrOp_Int16 args = doIndexOffAddrOp (Just mo_s_16ToWord) b16 res args
296 emitPrimOp res IndexOffAddrOp_Int32 args = doIndexOffAddrOp (Just mo_s_32ToWord) b32 res args
297 emitPrimOp res IndexOffAddrOp_Int64 args = doIndexOffAddrOp Nothing b64 res args
298 emitPrimOp res IndexOffAddrOp_Word8 args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
299 emitPrimOp res IndexOffAddrOp_Word16 args = doIndexOffAddrOp (Just mo_u_16ToWord) b16 res args
300 emitPrimOp res IndexOffAddrOp_Word32 args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
301 emitPrimOp res IndexOffAddrOp_Word64 args = doIndexOffAddrOp Nothing b64 res args
303 -- ReadXXXoffAddr, which are identical, for our purposes, to IndexXXXoffAddr.
305 emitPrimOp res ReadOffAddrOp_Char args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
306 emitPrimOp res ReadOffAddrOp_WideChar args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
307 emitPrimOp res ReadOffAddrOp_Int args = doIndexOffAddrOp Nothing bWord res args
308 emitPrimOp res ReadOffAddrOp_Word args = doIndexOffAddrOp Nothing bWord res args
309 emitPrimOp res ReadOffAddrOp_Addr args = doIndexOffAddrOp Nothing bWord res args
310 emitPrimOp res ReadOffAddrOp_Float args = doIndexOffAddrOp Nothing f32 res args
311 emitPrimOp res ReadOffAddrOp_Double args = doIndexOffAddrOp Nothing f64 res args
312 emitPrimOp res ReadOffAddrOp_StablePtr args = doIndexOffAddrOp Nothing bWord res args
313 emitPrimOp res ReadOffAddrOp_Int8 args = doIndexOffAddrOp (Just mo_s_8ToWord) b8 res args
314 emitPrimOp res ReadOffAddrOp_Int16 args = doIndexOffAddrOp (Just mo_s_16ToWord) b16 res args
315 emitPrimOp res ReadOffAddrOp_Int32 args = doIndexOffAddrOp (Just mo_s_32ToWord) b32 res args
316 emitPrimOp res ReadOffAddrOp_Int64 args = doIndexOffAddrOp Nothing b64 res args
317 emitPrimOp res ReadOffAddrOp_Word8 args = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
318 emitPrimOp res ReadOffAddrOp_Word16 args = doIndexOffAddrOp (Just mo_u_16ToWord) b16 res args
319 emitPrimOp res ReadOffAddrOp_Word32 args = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
320 emitPrimOp res ReadOffAddrOp_Word64 args = doIndexOffAddrOp Nothing b64 res args
324 emitPrimOp res IndexByteArrayOp_Char args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
325 emitPrimOp res IndexByteArrayOp_WideChar args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
326 emitPrimOp res IndexByteArrayOp_Int args = doIndexByteArrayOp Nothing bWord res args
327 emitPrimOp res IndexByteArrayOp_Word args = doIndexByteArrayOp Nothing bWord res args
328 emitPrimOp res IndexByteArrayOp_Addr args = doIndexByteArrayOp Nothing bWord res args
329 emitPrimOp res IndexByteArrayOp_Float args = doIndexByteArrayOp Nothing f32 res args
330 emitPrimOp res IndexByteArrayOp_Double args = doIndexByteArrayOp Nothing f64 res args
331 emitPrimOp res IndexByteArrayOp_StablePtr args = doIndexByteArrayOp Nothing bWord res args
332 emitPrimOp res IndexByteArrayOp_Int8 args = doIndexByteArrayOp (Just mo_s_8ToWord) b8 res args
333 emitPrimOp res IndexByteArrayOp_Int16 args = doIndexByteArrayOp (Just mo_s_16ToWord) b16 res args
334 emitPrimOp res IndexByteArrayOp_Int32 args = doIndexByteArrayOp (Just mo_s_32ToWord) b32 res args
335 emitPrimOp res IndexByteArrayOp_Int64 args = doIndexByteArrayOp Nothing b64 res args
336 emitPrimOp res IndexByteArrayOp_Word8 args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
337 emitPrimOp res IndexByteArrayOp_Word16 args = doIndexByteArrayOp (Just mo_u_16ToWord) b16 res args
338 emitPrimOp res IndexByteArrayOp_Word32 args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
339 emitPrimOp res IndexByteArrayOp_Word64 args = doIndexByteArrayOp Nothing b64 res args
341 -- ReadXXXArray, identical to IndexXXXArray.
343 emitPrimOp res ReadByteArrayOp_Char args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
344 emitPrimOp res ReadByteArrayOp_WideChar args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
345 emitPrimOp res ReadByteArrayOp_Int args = doIndexByteArrayOp Nothing bWord res args
346 emitPrimOp res ReadByteArrayOp_Word args = doIndexByteArrayOp Nothing bWord res args
347 emitPrimOp res ReadByteArrayOp_Addr args = doIndexByteArrayOp Nothing bWord res args
348 emitPrimOp res ReadByteArrayOp_Float args = doIndexByteArrayOp Nothing f32 res args
349 emitPrimOp res ReadByteArrayOp_Double args = doIndexByteArrayOp Nothing f64 res args
350 emitPrimOp res ReadByteArrayOp_StablePtr args = doIndexByteArrayOp Nothing bWord res args
351 emitPrimOp res ReadByteArrayOp_Int8 args = doIndexByteArrayOp (Just mo_s_8ToWord) b8 res args
352 emitPrimOp res ReadByteArrayOp_Int16 args = doIndexByteArrayOp (Just mo_s_16ToWord) b16 res args
353 emitPrimOp res ReadByteArrayOp_Int32 args = doIndexByteArrayOp (Just mo_s_32ToWord) b32 res args
354 emitPrimOp res ReadByteArrayOp_Int64 args = doIndexByteArrayOp Nothing b64 res args
355 emitPrimOp res ReadByteArrayOp_Word8 args = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
356 emitPrimOp res ReadByteArrayOp_Word16 args = doIndexByteArrayOp (Just mo_u_16ToWord) b16 res args
357 emitPrimOp res ReadByteArrayOp_Word32 args = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
358 emitPrimOp res ReadByteArrayOp_Word64 args = doIndexByteArrayOp Nothing b64 res args
362 emitPrimOp res WriteOffAddrOp_Char args = doWriteOffAddrOp (Just mo_WordTo8) res args
363 emitPrimOp res WriteOffAddrOp_WideChar args = doWriteOffAddrOp (Just mo_WordTo32) res args
364 emitPrimOp res WriteOffAddrOp_Int args = doWriteOffAddrOp Nothing res args
365 emitPrimOp res WriteOffAddrOp_Word args = doWriteOffAddrOp Nothing res args
366 emitPrimOp res WriteOffAddrOp_Addr args = doWriteOffAddrOp Nothing res args
367 emitPrimOp res WriteOffAddrOp_Float args = doWriteOffAddrOp Nothing res args
368 emitPrimOp res WriteOffAddrOp_Double args = doWriteOffAddrOp Nothing res args
369 emitPrimOp res WriteOffAddrOp_StablePtr args = doWriteOffAddrOp Nothing res args
370 emitPrimOp res WriteOffAddrOp_Int8 args = doWriteOffAddrOp (Just mo_WordTo8) res args
371 emitPrimOp res WriteOffAddrOp_Int16 args = doWriteOffAddrOp (Just mo_WordTo16) res args
372 emitPrimOp res WriteOffAddrOp_Int32 args = doWriteOffAddrOp (Just mo_WordTo32) res args
373 emitPrimOp res WriteOffAddrOp_Int64 args = doWriteOffAddrOp Nothing res args
374 emitPrimOp res WriteOffAddrOp_Word8 args = doWriteOffAddrOp (Just mo_WordTo8) res args
375 emitPrimOp res WriteOffAddrOp_Word16 args = doWriteOffAddrOp (Just mo_WordTo16) res args
376 emitPrimOp res WriteOffAddrOp_Word32 args = doWriteOffAddrOp (Just mo_WordTo32) res args
377 emitPrimOp res WriteOffAddrOp_Word64 args = doWriteOffAddrOp Nothing res args
381 emitPrimOp res WriteByteArrayOp_Char args = doWriteByteArrayOp (Just mo_WordTo8) res args
382 emitPrimOp res WriteByteArrayOp_WideChar args = doWriteByteArrayOp (Just mo_WordTo32) res args
383 emitPrimOp res WriteByteArrayOp_Int args = doWriteByteArrayOp Nothing res args
384 emitPrimOp res WriteByteArrayOp_Word args = doWriteByteArrayOp Nothing res args
385 emitPrimOp res WriteByteArrayOp_Addr args = doWriteByteArrayOp Nothing res args
386 emitPrimOp res WriteByteArrayOp_Float args = doWriteByteArrayOp Nothing res args
387 emitPrimOp res WriteByteArrayOp_Double args = doWriteByteArrayOp Nothing res args
388 emitPrimOp res WriteByteArrayOp_StablePtr args = doWriteByteArrayOp Nothing res args
389 emitPrimOp res WriteByteArrayOp_Int8 args = doWriteByteArrayOp (Just mo_WordTo8) res args
390 emitPrimOp res WriteByteArrayOp_Int16 args = doWriteByteArrayOp (Just mo_WordTo16) res args
391 emitPrimOp res WriteByteArrayOp_Int32 args = doWriteByteArrayOp (Just mo_WordTo32) res args
392 emitPrimOp res WriteByteArrayOp_Int64 args = doWriteByteArrayOp Nothing res args
393 emitPrimOp res WriteByteArrayOp_Word8 args = doWriteByteArrayOp (Just mo_WordTo8) res args
394 emitPrimOp res WriteByteArrayOp_Word16 args = doWriteByteArrayOp (Just mo_WordTo16) res args
395 emitPrimOp res WriteByteArrayOp_Word32 args = doWriteByteArrayOp (Just mo_WordTo32) res args
396 emitPrimOp res WriteByteArrayOp_Word64 args = doWriteByteArrayOp Nothing res args
399 -- The rest just translate straightforwardly
400 emitPrimOp [res] op [arg]
402 = emit (mkAssign (CmmLocal res) arg)
404 | Just (mop,rep) <- narrowOp op
405 = emit (mkAssign (CmmLocal res) $
406 CmmMachOp (mop rep wordWidth) [CmmMachOp (mop wordWidth rep) [arg]])
408 emitPrimOp [res] op args
409 | Just prim <- callishOp op
410 = do emitPrimCall res prim args
412 | Just mop <- translateOp op
413 = let stmt = mkAssign (CmmLocal res) (CmmMachOp mop args) in
417 = pprPanic "emitPrimOp: can't translate PrimOp" (ppr op)
420 -- These PrimOps are NOPs in Cmm
422 nopOp :: PrimOp -> Bool
423 nopOp Int2WordOp = True
424 nopOp Word2IntOp = True
425 nopOp Int2AddrOp = True
426 nopOp Addr2IntOp = True
427 nopOp ChrOp = True -- Int# and Char# are rep'd the same
431 -- These PrimOps turn into double casts
433 narrowOp :: PrimOp -> Maybe (Width -> Width -> MachOp, Width)
434 narrowOp Narrow8IntOp = Just (MO_SS_Conv, W8)
435 narrowOp Narrow16IntOp = Just (MO_SS_Conv, W16)
436 narrowOp Narrow32IntOp = Just (MO_SS_Conv, W32)
437 narrowOp Narrow8WordOp = Just (MO_UU_Conv, W8)
438 narrowOp Narrow16WordOp = Just (MO_UU_Conv, W16)
439 narrowOp Narrow32WordOp = Just (MO_UU_Conv, W32)
442 -- Native word signless ops
444 translateOp :: PrimOp -> Maybe MachOp
445 translateOp IntAddOp = Just mo_wordAdd
446 translateOp IntSubOp = Just mo_wordSub
447 translateOp WordAddOp = Just mo_wordAdd
448 translateOp WordSubOp = Just mo_wordSub
449 translateOp AddrAddOp = Just mo_wordAdd
450 translateOp AddrSubOp = Just mo_wordSub
452 translateOp IntEqOp = Just mo_wordEq
453 translateOp IntNeOp = Just mo_wordNe
454 translateOp WordEqOp = Just mo_wordEq
455 translateOp WordNeOp = Just mo_wordNe
456 translateOp AddrEqOp = Just mo_wordEq
457 translateOp AddrNeOp = Just mo_wordNe
459 translateOp AndOp = Just mo_wordAnd
460 translateOp OrOp = Just mo_wordOr
461 translateOp XorOp = Just mo_wordXor
462 translateOp NotOp = Just mo_wordNot
463 translateOp SllOp = Just mo_wordShl
464 translateOp SrlOp = Just mo_wordUShr
466 translateOp AddrRemOp = Just mo_wordURem
468 -- Native word signed ops
470 translateOp IntMulOp = Just mo_wordMul
471 translateOp IntMulMayOfloOp = Just (MO_S_MulMayOflo wordWidth)
472 translateOp IntQuotOp = Just mo_wordSQuot
473 translateOp IntRemOp = Just mo_wordSRem
474 translateOp IntNegOp = Just mo_wordSNeg
477 translateOp IntGeOp = Just mo_wordSGe
478 translateOp IntLeOp = Just mo_wordSLe
479 translateOp IntGtOp = Just mo_wordSGt
480 translateOp IntLtOp = Just mo_wordSLt
482 translateOp ISllOp = Just mo_wordShl
483 translateOp ISraOp = Just mo_wordSShr
484 translateOp ISrlOp = Just mo_wordUShr
486 -- Native word unsigned ops
488 translateOp WordGeOp = Just mo_wordUGe
489 translateOp WordLeOp = Just mo_wordULe
490 translateOp WordGtOp = Just mo_wordUGt
491 translateOp WordLtOp = Just mo_wordULt
493 translateOp WordMulOp = Just mo_wordMul
494 translateOp WordQuotOp = Just mo_wordUQuot
495 translateOp WordRemOp = Just mo_wordURem
497 translateOp AddrGeOp = Just mo_wordUGe
498 translateOp AddrLeOp = Just mo_wordULe
499 translateOp AddrGtOp = Just mo_wordUGt
500 translateOp AddrLtOp = Just mo_wordULt
504 translateOp CharEqOp = Just (MO_Eq wordWidth)
505 translateOp CharNeOp = Just (MO_Ne wordWidth)
506 translateOp CharGeOp = Just (MO_U_Ge wordWidth)
507 translateOp CharLeOp = Just (MO_U_Le wordWidth)
508 translateOp CharGtOp = Just (MO_U_Gt wordWidth)
509 translateOp CharLtOp = Just (MO_U_Lt wordWidth)
513 translateOp DoubleEqOp = Just (MO_F_Eq W64)
514 translateOp DoubleNeOp = Just (MO_F_Ne W64)
515 translateOp DoubleGeOp = Just (MO_F_Ge W64)
516 translateOp DoubleLeOp = Just (MO_F_Le W64)
517 translateOp DoubleGtOp = Just (MO_F_Gt W64)
518 translateOp DoubleLtOp = Just (MO_F_Lt W64)
520 translateOp DoubleAddOp = Just (MO_F_Add W64)
521 translateOp DoubleSubOp = Just (MO_F_Sub W64)
522 translateOp DoubleMulOp = Just (MO_F_Mul W64)
523 translateOp DoubleDivOp = Just (MO_F_Quot W64)
524 translateOp DoubleNegOp = Just (MO_F_Neg W64)
528 translateOp FloatEqOp = Just (MO_F_Eq W32)
529 translateOp FloatNeOp = Just (MO_F_Ne W32)
530 translateOp FloatGeOp = Just (MO_F_Ge W32)
531 translateOp FloatLeOp = Just (MO_F_Le W32)
532 translateOp FloatGtOp = Just (MO_F_Gt W32)
533 translateOp FloatLtOp = Just (MO_F_Lt W32)
535 translateOp FloatAddOp = Just (MO_F_Add W32)
536 translateOp FloatSubOp = Just (MO_F_Sub W32)
537 translateOp FloatMulOp = Just (MO_F_Mul W32)
538 translateOp FloatDivOp = Just (MO_F_Quot W32)
539 translateOp FloatNegOp = Just (MO_F_Neg W32)
543 translateOp Int2DoubleOp = Just (MO_SF_Conv wordWidth W64)
544 translateOp Double2IntOp = Just (MO_FS_Conv W64 wordWidth)
546 translateOp Int2FloatOp = Just (MO_SF_Conv wordWidth W32)
547 translateOp Float2IntOp = Just (MO_FS_Conv W32 wordWidth)
549 translateOp Float2DoubleOp = Just (MO_FF_Conv W32 W64)
550 translateOp Double2FloatOp = Just (MO_FF_Conv W64 W32)
552 -- Word comparisons masquerading as more exotic things.
554 translateOp SameMutVarOp = Just mo_wordEq
555 translateOp SameMVarOp = Just mo_wordEq
556 translateOp SameMutableArrayOp = Just mo_wordEq
557 translateOp SameMutableByteArrayOp = Just mo_wordEq
558 translateOp SameTVarOp = Just mo_wordEq
559 translateOp EqStablePtrOp = Just mo_wordEq
561 translateOp _ = Nothing
563 -- These primops are implemented by CallishMachOps, because they sometimes
564 -- turn into foreign calls depending on the backend.
566 callishOp :: PrimOp -> Maybe CallishMachOp
567 callishOp DoublePowerOp = Just MO_F64_Pwr
568 callishOp DoubleSinOp = Just MO_F64_Sin
569 callishOp DoubleCosOp = Just MO_F64_Cos
570 callishOp DoubleTanOp = Just MO_F64_Tan
571 callishOp DoubleSinhOp = Just MO_F64_Sinh
572 callishOp DoubleCoshOp = Just MO_F64_Cosh
573 callishOp DoubleTanhOp = Just MO_F64_Tanh
574 callishOp DoubleAsinOp = Just MO_F64_Asin
575 callishOp DoubleAcosOp = Just MO_F64_Acos
576 callishOp DoubleAtanOp = Just MO_F64_Atan
577 callishOp DoubleLogOp = Just MO_F64_Log
578 callishOp DoubleExpOp = Just MO_F64_Exp
579 callishOp DoubleSqrtOp = Just MO_F64_Sqrt
581 callishOp FloatPowerOp = Just MO_F32_Pwr
582 callishOp FloatSinOp = Just MO_F32_Sin
583 callishOp FloatCosOp = Just MO_F32_Cos
584 callishOp FloatTanOp = Just MO_F32_Tan
585 callishOp FloatSinhOp = Just MO_F32_Sinh
586 callishOp FloatCoshOp = Just MO_F32_Cosh
587 callishOp FloatTanhOp = Just MO_F32_Tanh
588 callishOp FloatAsinOp = Just MO_F32_Asin
589 callishOp FloatAcosOp = Just MO_F32_Acos
590 callishOp FloatAtanOp = Just MO_F32_Atan
591 callishOp FloatLogOp = Just MO_F32_Log
592 callishOp FloatExpOp = Just MO_F32_Exp
593 callishOp FloatSqrtOp = Just MO_F32_Sqrt
595 callishOp _ = Nothing
597 ------------------------------------------------------------------------------
598 -- Helpers for translating various minor variants of array indexing.
600 doIndexOffAddrOp :: Maybe MachOp -> CmmType -> [LocalReg] -> [CmmExpr] -> FCode ()
601 doIndexOffAddrOp maybe_post_read_cast rep [res] [addr,idx]
602 = mkBasicIndexedRead 0 maybe_post_read_cast rep res addr idx
603 doIndexOffAddrOp _ _ _ _
604 = panic "CgPrimOp: doIndexOffAddrOp"
606 doIndexByteArrayOp :: Maybe MachOp -> CmmType -> [LocalReg] -> [CmmExpr] -> FCode ()
607 doIndexByteArrayOp maybe_post_read_cast rep [res] [addr,idx]
608 = mkBasicIndexedRead arrWordsHdrSize maybe_post_read_cast rep res addr idx
609 doIndexByteArrayOp _ _ _ _
610 = panic "CgPrimOp: doIndexByteArrayOp"
612 doReadPtrArrayOp :: LocalReg -> CmmExpr -> CmmExpr -> FCode ()
613 doReadPtrArrayOp res addr idx
614 = mkBasicIndexedRead arrPtrsHdrSize Nothing gcWord res addr idx
617 doWriteOffAddrOp :: Maybe MachOp -> [LocalReg] -> [CmmExpr] -> FCode ()
618 doWriteOffAddrOp maybe_pre_write_cast [] [addr,idx,val]
619 = mkBasicIndexedWrite 0 maybe_pre_write_cast addr idx val
620 doWriteOffAddrOp _ _ _
621 = panic "CgPrimOp: doWriteOffAddrOp"
623 doWriteByteArrayOp :: Maybe MachOp -> [LocalReg] -> [CmmExpr] -> FCode ()
624 doWriteByteArrayOp maybe_pre_write_cast [] [addr,idx,val]
625 = mkBasicIndexedWrite arrWordsHdrSize maybe_pre_write_cast addr idx val
626 doWriteByteArrayOp _ _ _
627 = panic "CgPrimOp: doWriteByteArrayOp"
629 doWritePtrArrayOp :: CmmExpr -> CmmExpr -> CmmExpr -> FCode ()
630 doWritePtrArrayOp addr idx val
631 = do emit (setInfo addr (CmmLit (CmmLabel mkMAP_DIRTY_infoLabel)))
632 mkBasicIndexedWrite arrPtrsHdrSize Nothing addr idx val
634 mkBasicIndexedRead :: ByteOff -> Maybe MachOp -> CmmType
635 -> LocalReg -> CmmExpr -> CmmExpr -> FCode ()
636 mkBasicIndexedRead off Nothing read_rep res base idx
637 = emit (mkAssign (CmmLocal res) (cmmLoadIndexOffExpr off read_rep base idx))
638 mkBasicIndexedRead off (Just cast) read_rep res base idx
639 = emit (mkAssign (CmmLocal res) (CmmMachOp cast [
640 cmmLoadIndexOffExpr off read_rep base idx]))
642 mkBasicIndexedWrite :: ByteOff -> Maybe MachOp
643 -> CmmExpr -> CmmExpr -> CmmExpr -> FCode ()
644 mkBasicIndexedWrite off Nothing base idx val
645 = emit (mkStore (cmmIndexOffExpr off (typeWidth (cmmExprType val)) base idx) val)
646 mkBasicIndexedWrite off (Just cast) base idx val
647 = mkBasicIndexedWrite off Nothing base idx (CmmMachOp cast [val])
649 -- ----------------------------------------------------------------------------
652 cmmIndexOffExpr :: ByteOff -> Width -> CmmExpr -> CmmExpr -> CmmExpr
653 cmmIndexOffExpr off width base idx
654 = cmmIndexExpr width (cmmOffsetB base off) idx
656 cmmLoadIndexOffExpr :: ByteOff -> CmmType -> CmmExpr -> CmmExpr -> CmmExpr
657 cmmLoadIndexOffExpr off ty base idx
658 = CmmLoad (cmmIndexOffExpr off (typeWidth ty) base idx) ty
660 setInfo :: CmmExpr -> CmmExpr -> CmmAGraph
661 setInfo closure_ptr info_ptr = mkStore closure_ptr info_ptr