1 -----------------------------------------------------------------------------
3 -- Code generation for PrimOps.
5 -- (c) The University of Glasgow 2004-2006
7 -----------------------------------------------------------------------------
30 -- ---------------------------------------------------------------------------
31 -- Code generation for PrimOps
33 cgPrimOp :: CmmFormals -- where to put the results
35 -> [StgArg] -- arguments
36 -> StgLiveVars -- live vars, in case we need to save them
39 cgPrimOp results op args live
40 = do arg_exprs <- getArgAmodes args
41 let non_void_args = [ e | (r,e) <- arg_exprs, nonVoidArg r ]
42 emitPrimOp results op non_void_args live
45 emitPrimOp :: CmmFormals -- where to put the results
47 -> [CmmExpr] -- arguments
48 -> StgLiveVars -- live vars, in case we need to save them
51 -- First we handle various awkward cases specially. The remaining
52 -- easy cases are then handled by translateOp, defined below.
54 emitPrimOp [res_r,res_c] IntAddCOp [aa,bb] _
56 With some bit-twiddling, we can define int{Add,Sub}Czh portably in
57 C, and without needing any comparisons. This may not be the
58 fastest way to do it - if you have better code, please send it! --SDM
60 Return : r = a + b, c = 0 if no overflow, 1 on overflow.
62 We currently don't make use of the r value if c is != 0 (i.e.
63 overflow), we just convert to big integers and try again. This
64 could be improved by making r and c the correct values for
65 plugging into a new J#.
67 { r = ((I_)(a)) + ((I_)(b)); \
68 c = ((StgWord)(~(((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
69 >> (BITS_IN (I_) - 1); \
71 Wading through the mass of bracketry, it seems to reduce to:
72 c = ( (~(a^b)) & (a^r) ) >>unsigned (BITS_IN(I_)-1)
76 CmmAssign (CmmLocal res_r) (CmmMachOp mo_wordAdd [aa,bb]),
77 CmmAssign (CmmLocal res_c) $
78 CmmMachOp mo_wordUShr [
79 CmmMachOp mo_wordAnd [
80 CmmMachOp mo_wordNot [CmmMachOp mo_wordXor [aa,bb]],
81 CmmMachOp mo_wordXor [aa, CmmReg (CmmLocal res_r)]
83 CmmLit (mkIntCLit (wORD_SIZE_IN_BITS - 1))
88 emitPrimOp [res_r,res_c] IntSubCOp [aa,bb] _
90 #define subIntCzh(r,c,a,b) \
91 { r = ((I_)(a)) - ((I_)(b)); \
92 c = ((StgWord)((((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
93 >> (BITS_IN (I_) - 1); \
96 c = ((a^b) & (a^r)) >>unsigned (BITS_IN(I_)-1)
99 CmmAssign (CmmLocal res_r) (CmmMachOp mo_wordSub [aa,bb]),
100 CmmAssign (CmmLocal res_c) $
101 CmmMachOp mo_wordUShr [
102 CmmMachOp mo_wordAnd [
103 CmmMachOp mo_wordXor [aa,bb],
104 CmmMachOp mo_wordXor [aa, CmmReg (CmmLocal res_r)]
106 CmmLit (mkIntCLit (wORD_SIZE_IN_BITS - 1))
111 emitPrimOp [res] ParOp [arg] live
113 -- for now, just implement this in a C function
114 -- later, we might want to inline it.
115 vols <- getVolatileRegs live
116 emitForeignCall' PlayRisky
117 [CmmHinted res NoHint]
118 (CmmCallee newspark CCallConv)
119 [ (CmmHinted (CmmReg (CmmGlobal BaseReg)) AddrHint)
120 , (CmmHinted arg AddrHint) ]
122 NoC_SRT -- No SRT b/c we do PlayRisky
125 newspark = CmmLit (CmmLabel (mkRtsCodeLabel (sLit "newSpark")))
127 emitPrimOp [res] ReadMutVarOp [mutv] _
128 = stmtC (CmmAssign (CmmLocal res) (cmmLoadIndexW mutv fixedHdrSize gcWord))
130 emitPrimOp [] WriteMutVarOp [mutv,var] live
132 stmtC (CmmStore (cmmOffsetW mutv fixedHdrSize) var)
133 vols <- getVolatileRegs live
134 emitForeignCall' PlayRisky
136 (CmmCallee (CmmLit (CmmLabel mkDirty_MUT_VAR_Label))
138 [ (CmmHinted (CmmReg (CmmGlobal BaseReg)) AddrHint)
139 , (CmmHinted mutv AddrHint) ]
141 NoC_SRT -- No SRT b/c we do PlayRisky
144 -- #define sizzeofByteArrayzh(r,a) \
145 -- r = (((StgArrWords *)(a))->words * sizeof(W_))
146 emitPrimOp [res] SizeofByteArrayOp [arg] _
148 CmmAssign (CmmLocal res) (CmmMachOp mo_wordMul [
149 cmmLoadIndexW arg fixedHdrSize bWord,
150 CmmLit (mkIntCLit wORD_SIZE)
153 -- #define sizzeofMutableByteArrayzh(r,a) \
154 -- r = (((StgArrWords *)(a))->words * sizeof(W_))
155 emitPrimOp [res] SizeofMutableByteArrayOp [arg] live
156 = emitPrimOp [res] SizeofByteArrayOp [arg] live
159 -- #define touchzh(o) /* nothing */
160 emitPrimOp [] TouchOp [_] _
163 -- #define byteArrayContentszh(r,a) r = BYTE_ARR_CTS(a)
164 emitPrimOp [res] ByteArrayContents_Char [arg] _
165 = stmtC (CmmAssign (CmmLocal res) (cmmOffsetB arg arrWordsHdrSize))
167 -- #define stableNameToIntzh(r,s) (r = ((StgStableName *)s)->sn)
168 emitPrimOp [res] StableNameToIntOp [arg] _
169 = stmtC (CmmAssign (CmmLocal res) (cmmLoadIndexW arg fixedHdrSize bWord))
171 -- #define eqStableNamezh(r,sn1,sn2) \
172 -- (r = (((StgStableName *)sn1)->sn == ((StgStableName *)sn2)->sn))
173 emitPrimOp [res] EqStableNameOp [arg1,arg2] _
174 = stmtC (CmmAssign (CmmLocal res) (CmmMachOp mo_wordEq [
175 cmmLoadIndexW arg1 fixedHdrSize bWord,
176 cmmLoadIndexW arg2 fixedHdrSize bWord
180 emitPrimOp [res] ReallyUnsafePtrEqualityOp [arg1,arg2] _
181 = stmtC (CmmAssign (CmmLocal res) (CmmMachOp mo_wordEq [arg1,arg2]))
183 -- #define addrToHValuezh(r,a) r=(P_)a
184 emitPrimOp [res] AddrToHValueOp [arg] _
185 = stmtC (CmmAssign (CmmLocal res) arg)
187 -- #define dataToTagzh(r,a) r=(GET_TAG(((StgClosure *)a)->header.info))
188 -- Note: argument may be tagged!
189 emitPrimOp [res] DataToTagOp [arg] _
190 = stmtC (CmmAssign (CmmLocal res) (getConstrTag (cmmUntag arg)))
192 {- Freezing arrays-of-ptrs requires changing an info table, for the
193 benefit of the generational collector. It needs to scavenge mutable
194 objects, even if they are in old space. When they become immutable,
195 they can be removed from this scavenge list. -}
197 -- #define unsafeFreezzeArrayzh(r,a)
199 -- SET_INFO((StgClosure *)a,&stg_MUT_ARR_PTRS_FROZEN0_info);
202 emitPrimOp [res] UnsafeFreezeArrayOp [arg] _
203 = stmtsC [ setInfo arg (CmmLit (CmmLabel mkMAP_FROZEN_infoLabel)),
204 CmmAssign (CmmLocal res) arg ]
206 -- #define unsafeFreezzeByteArrayzh(r,a) r=(a)
207 emitPrimOp [res] UnsafeFreezeByteArrayOp [arg] _
208 = stmtC (CmmAssign (CmmLocal res) arg)
210 -- Reading/writing pointer arrays
212 emitPrimOp [r] ReadArrayOp [obj,ix] _ = doReadPtrArrayOp r obj ix
213 emitPrimOp [r] IndexArrayOp [obj,ix] _ = doReadPtrArrayOp r obj ix
214 emitPrimOp [] WriteArrayOp [obj,ix,v] _ = doWritePtrArrayOp obj ix v
218 emitPrimOp res IndexOffAddrOp_Char args _ = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
219 emitPrimOp res IndexOffAddrOp_WideChar args _ = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
220 emitPrimOp res IndexOffAddrOp_Int args _ = doIndexOffAddrOp Nothing bWord res args
221 emitPrimOp res IndexOffAddrOp_Word args _ = doIndexOffAddrOp Nothing bWord res args
222 emitPrimOp res IndexOffAddrOp_Addr args _ = doIndexOffAddrOp Nothing bWord res args
223 emitPrimOp res IndexOffAddrOp_Float args _ = doIndexOffAddrOp Nothing f32 res args
224 emitPrimOp res IndexOffAddrOp_Double args _ = doIndexOffAddrOp Nothing f64 res args
225 emitPrimOp res IndexOffAddrOp_StablePtr args _ = doIndexOffAddrOp Nothing bWord res args
226 emitPrimOp res IndexOffAddrOp_Int8 args _ = doIndexOffAddrOp (Just mo_s_8ToWord) b8 res args
227 emitPrimOp res IndexOffAddrOp_Int16 args _ = doIndexOffAddrOp (Just mo_s_16ToWord) b16 res args
228 emitPrimOp res IndexOffAddrOp_Int32 args _ = doIndexOffAddrOp (Just mo_s_32ToWord) b32 res args
229 emitPrimOp res IndexOffAddrOp_Int64 args _ = doIndexOffAddrOp Nothing b64 res args
230 emitPrimOp res IndexOffAddrOp_Word8 args _ = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
231 emitPrimOp res IndexOffAddrOp_Word16 args _ = doIndexOffAddrOp (Just mo_u_16ToWord) b16 res args
232 emitPrimOp res IndexOffAddrOp_Word32 args _ = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
233 emitPrimOp res IndexOffAddrOp_Word64 args _ = doIndexOffAddrOp Nothing b64 res args
235 -- ReadXXXoffAddr, which are identical, for our purposes, to IndexXXXoffAddr.
237 emitPrimOp res ReadOffAddrOp_Char args _ = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
238 emitPrimOp res ReadOffAddrOp_WideChar args _ = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
239 emitPrimOp res ReadOffAddrOp_Int args _ = doIndexOffAddrOp Nothing bWord res args
240 emitPrimOp res ReadOffAddrOp_Word args _ = doIndexOffAddrOp Nothing bWord res args
241 emitPrimOp res ReadOffAddrOp_Addr args _ = doIndexOffAddrOp Nothing bWord res args
242 emitPrimOp res ReadOffAddrOp_Float args _ = doIndexOffAddrOp Nothing f32 res args
243 emitPrimOp res ReadOffAddrOp_Double args _ = doIndexOffAddrOp Nothing f64 res args
244 emitPrimOp res ReadOffAddrOp_StablePtr args _ = doIndexOffAddrOp Nothing bWord res args
245 emitPrimOp res ReadOffAddrOp_Int8 args _ = doIndexOffAddrOp (Just mo_s_8ToWord) b8 res args
246 emitPrimOp res ReadOffAddrOp_Int16 args _ = doIndexOffAddrOp (Just mo_s_16ToWord) b16 res args
247 emitPrimOp res ReadOffAddrOp_Int32 args _ = doIndexOffAddrOp (Just mo_s_32ToWord) b32 res args
248 emitPrimOp res ReadOffAddrOp_Int64 args _ = doIndexOffAddrOp Nothing b64 res args
249 emitPrimOp res ReadOffAddrOp_Word8 args _ = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
250 emitPrimOp res ReadOffAddrOp_Word16 args _ = doIndexOffAddrOp (Just mo_u_16ToWord) b16 res args
251 emitPrimOp res ReadOffAddrOp_Word32 args _ = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
252 emitPrimOp res ReadOffAddrOp_Word64 args _ = doIndexOffAddrOp Nothing b64 res args
256 emitPrimOp res IndexByteArrayOp_Char args _ = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
257 emitPrimOp res IndexByteArrayOp_WideChar args _ = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
258 emitPrimOp res IndexByteArrayOp_Int args _ = doIndexByteArrayOp Nothing bWord res args
259 emitPrimOp res IndexByteArrayOp_Word args _ = doIndexByteArrayOp Nothing bWord res args
260 emitPrimOp res IndexByteArrayOp_Addr args _ = doIndexByteArrayOp Nothing bWord res args
261 emitPrimOp res IndexByteArrayOp_Float args _ = doIndexByteArrayOp Nothing f32 res args
262 emitPrimOp res IndexByteArrayOp_Double args _ = doIndexByteArrayOp Nothing f64 res args
263 emitPrimOp res IndexByteArrayOp_StablePtr args _ = doIndexByteArrayOp Nothing bWord res args
264 emitPrimOp res IndexByteArrayOp_Int8 args _ = doIndexByteArrayOp (Just mo_s_8ToWord) b8 res args
265 emitPrimOp res IndexByteArrayOp_Int16 args _ = doIndexByteArrayOp (Just mo_s_16ToWord) b16 res args
266 emitPrimOp res IndexByteArrayOp_Int32 args _ = doIndexByteArrayOp (Just mo_s_32ToWord) b32 res args
267 emitPrimOp res IndexByteArrayOp_Int64 args _ = doIndexByteArrayOp Nothing b64 res args
268 emitPrimOp res IndexByteArrayOp_Word8 args _ = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
269 emitPrimOp res IndexByteArrayOp_Word16 args _ = doIndexByteArrayOp (Just mo_u_16ToWord) b16 res args
270 emitPrimOp res IndexByteArrayOp_Word32 args _ = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
271 emitPrimOp res IndexByteArrayOp_Word64 args _ = doIndexByteArrayOp Nothing b64 res args
273 -- ReadXXXArray, identical to IndexXXXArray.
275 emitPrimOp res ReadByteArrayOp_Char args _ = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
276 emitPrimOp res ReadByteArrayOp_WideChar args _ = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
277 emitPrimOp res ReadByteArrayOp_Int args _ = doIndexByteArrayOp Nothing bWord res args
278 emitPrimOp res ReadByteArrayOp_Word args _ = doIndexByteArrayOp Nothing bWord res args
279 emitPrimOp res ReadByteArrayOp_Addr args _ = doIndexByteArrayOp Nothing bWord res args
280 emitPrimOp res ReadByteArrayOp_Float args _ = doIndexByteArrayOp Nothing f32 res args
281 emitPrimOp res ReadByteArrayOp_Double args _ = doIndexByteArrayOp Nothing f64 res args
282 emitPrimOp res ReadByteArrayOp_StablePtr args _ = doIndexByteArrayOp Nothing bWord res args
283 emitPrimOp res ReadByteArrayOp_Int8 args _ = doIndexByteArrayOp (Just mo_s_8ToWord) b8 res args
284 emitPrimOp res ReadByteArrayOp_Int16 args _ = doIndexByteArrayOp (Just mo_s_16ToWord) b16 res args
285 emitPrimOp res ReadByteArrayOp_Int32 args _ = doIndexByteArrayOp (Just mo_s_32ToWord) b32 res args
286 emitPrimOp res ReadByteArrayOp_Int64 args _ = doIndexByteArrayOp Nothing b64 res args
287 emitPrimOp res ReadByteArrayOp_Word8 args _ = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
288 emitPrimOp res ReadByteArrayOp_Word16 args _ = doIndexByteArrayOp (Just mo_u_16ToWord) b16 res args
289 emitPrimOp res ReadByteArrayOp_Word32 args _ = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
290 emitPrimOp res ReadByteArrayOp_Word64 args _ = doIndexByteArrayOp Nothing b64 res args
294 emitPrimOp res WriteOffAddrOp_Char args _ = doWriteOffAddrOp (Just mo_WordTo8) b8 res args
295 emitPrimOp res WriteOffAddrOp_WideChar args _ = doWriteOffAddrOp (Just mo_WordTo32) b32 res args
296 emitPrimOp res WriteOffAddrOp_Int args _ = doWriteOffAddrOp Nothing bWord res args
297 emitPrimOp res WriteOffAddrOp_Word args _ = doWriteOffAddrOp Nothing bWord res args
298 emitPrimOp res WriteOffAddrOp_Addr args _ = doWriteOffAddrOp Nothing bWord res args
299 emitPrimOp res WriteOffAddrOp_Float args _ = doWriteOffAddrOp Nothing f32 res args
300 emitPrimOp res WriteOffAddrOp_Double args _ = doWriteOffAddrOp Nothing f64 res args
301 emitPrimOp res WriteOffAddrOp_StablePtr args _ = doWriteOffAddrOp Nothing bWord res args
302 emitPrimOp res WriteOffAddrOp_Int8 args _ = doWriteOffAddrOp (Just mo_WordTo8) b8 res args
303 emitPrimOp res WriteOffAddrOp_Int16 args _ = doWriteOffAddrOp (Just mo_WordTo16) b16 res args
304 emitPrimOp res WriteOffAddrOp_Int32 args _ = doWriteOffAddrOp (Just mo_WordTo32) b32 res args
305 emitPrimOp res WriteOffAddrOp_Int64 args _ = doWriteOffAddrOp Nothing b64 res args
306 emitPrimOp res WriteOffAddrOp_Word8 args _ = doWriteOffAddrOp (Just mo_WordTo8) b8 res args
307 emitPrimOp res WriteOffAddrOp_Word16 args _ = doWriteOffAddrOp (Just mo_WordTo16) b16 res args
308 emitPrimOp res WriteOffAddrOp_Word32 args _ = doWriteOffAddrOp (Just mo_WordTo32) b32 res args
309 emitPrimOp res WriteOffAddrOp_Word64 args _ = doWriteOffAddrOp Nothing b64 res args
313 emitPrimOp res WriteByteArrayOp_Char args _ = doWriteByteArrayOp (Just mo_WordTo8) b8 res args
314 emitPrimOp res WriteByteArrayOp_WideChar args _ = doWriteByteArrayOp (Just mo_WordTo32) b32 res args
315 emitPrimOp res WriteByteArrayOp_Int args _ = doWriteByteArrayOp Nothing bWord res args
316 emitPrimOp res WriteByteArrayOp_Word args _ = doWriteByteArrayOp Nothing bWord res args
317 emitPrimOp res WriteByteArrayOp_Addr args _ = doWriteByteArrayOp Nothing bWord res args
318 emitPrimOp res WriteByteArrayOp_Float args _ = doWriteByteArrayOp Nothing f32 res args
319 emitPrimOp res WriteByteArrayOp_Double args _ = doWriteByteArrayOp Nothing f64 res args
320 emitPrimOp res WriteByteArrayOp_StablePtr args _ = doWriteByteArrayOp Nothing bWord res args
321 emitPrimOp res WriteByteArrayOp_Int8 args _ = doWriteByteArrayOp (Just mo_WordTo8) b8 res args
322 emitPrimOp res WriteByteArrayOp_Int16 args _ = doWriteByteArrayOp (Just mo_WordTo16) b16 res args
323 emitPrimOp res WriteByteArrayOp_Int32 args _ = doWriteByteArrayOp (Just mo_WordTo32) b32 res args
324 emitPrimOp res WriteByteArrayOp_Int64 args _ = doWriteByteArrayOp Nothing b64 res args
325 emitPrimOp res WriteByteArrayOp_Word8 args _ = doWriteByteArrayOp (Just mo_WordTo8) b8 res args
326 emitPrimOp res WriteByteArrayOp_Word16 args _ = doWriteByteArrayOp (Just mo_WordTo16) b16 res args
327 emitPrimOp res WriteByteArrayOp_Word32 args _ = doWriteByteArrayOp (Just mo_WordTo32) b32 res args
328 emitPrimOp res WriteByteArrayOp_Word64 args _ = doWriteByteArrayOp Nothing b64 res args
331 -- The rest just translate straightforwardly
332 emitPrimOp [res] op [arg] _
334 = stmtC (CmmAssign (CmmLocal res) arg)
336 | Just (mop,rep) <- narrowOp op
337 = stmtC (CmmAssign (CmmLocal res) $
338 CmmMachOp (mop rep wordWidth) [CmmMachOp (mop wordWidth rep) [arg]])
340 emitPrimOp [res] op args live
341 | Just prim <- callishOp op
342 = do vols <- getVolatileRegs live
343 emitForeignCall' PlayRisky
344 [CmmHinted res NoHint]
346 [CmmHinted a NoHint | a<-args] -- ToDo: hints?
348 NoC_SRT -- No SRT b/c we do PlayRisky
351 | Just mop <- translateOp op
352 = let stmt = CmmAssign (CmmLocal res) (CmmMachOp mop args) in
356 = pprPanic "emitPrimOp: can't translate PrimOp" (ppr op)
359 -- These PrimOps are NOPs in Cmm
361 nopOp :: PrimOp -> Bool
362 nopOp Int2WordOp = True
363 nopOp Word2IntOp = True
364 nopOp Int2AddrOp = True
365 nopOp Addr2IntOp = True
366 nopOp ChrOp = True -- Int# and Char# are rep'd the same
370 -- These PrimOps turn into double casts
372 narrowOp :: PrimOp -> Maybe (Width -> Width -> MachOp, Width)
373 narrowOp Narrow8IntOp = Just (MO_SS_Conv, W8)
374 narrowOp Narrow16IntOp = Just (MO_SS_Conv, W16)
375 narrowOp Narrow32IntOp = Just (MO_SS_Conv, W32)
376 narrowOp Narrow8WordOp = Just (MO_UU_Conv, W8)
377 narrowOp Narrow16WordOp = Just (MO_UU_Conv, W16)
378 narrowOp Narrow32WordOp = Just (MO_UU_Conv, W32)
381 -- Native word signless ops
383 translateOp :: PrimOp -> Maybe MachOp
384 translateOp IntAddOp = Just mo_wordAdd
385 translateOp IntSubOp = Just mo_wordSub
386 translateOp WordAddOp = Just mo_wordAdd
387 translateOp WordSubOp = Just mo_wordSub
388 translateOp AddrAddOp = Just mo_wordAdd
389 translateOp AddrSubOp = Just mo_wordSub
391 translateOp IntEqOp = Just mo_wordEq
392 translateOp IntNeOp = Just mo_wordNe
393 translateOp WordEqOp = Just mo_wordEq
394 translateOp WordNeOp = Just mo_wordNe
395 translateOp AddrEqOp = Just mo_wordEq
396 translateOp AddrNeOp = Just mo_wordNe
398 translateOp AndOp = Just mo_wordAnd
399 translateOp OrOp = Just mo_wordOr
400 translateOp XorOp = Just mo_wordXor
401 translateOp NotOp = Just mo_wordNot
402 translateOp SllOp = Just mo_wordShl
403 translateOp SrlOp = Just mo_wordUShr
405 translateOp AddrRemOp = Just mo_wordURem
407 -- Native word signed ops
409 translateOp IntMulOp = Just mo_wordMul
410 translateOp IntMulMayOfloOp = Just (MO_S_MulMayOflo wordWidth)
411 translateOp IntQuotOp = Just mo_wordSQuot
412 translateOp IntRemOp = Just mo_wordSRem
413 translateOp IntNegOp = Just mo_wordSNeg
416 translateOp IntGeOp = Just mo_wordSGe
417 translateOp IntLeOp = Just mo_wordSLe
418 translateOp IntGtOp = Just mo_wordSGt
419 translateOp IntLtOp = Just mo_wordSLt
421 translateOp ISllOp = Just mo_wordShl
422 translateOp ISraOp = Just mo_wordSShr
423 translateOp ISrlOp = Just mo_wordUShr
425 -- Native word unsigned ops
427 translateOp WordGeOp = Just mo_wordUGe
428 translateOp WordLeOp = Just mo_wordULe
429 translateOp WordGtOp = Just mo_wordUGt
430 translateOp WordLtOp = Just mo_wordULt
432 translateOp WordMulOp = Just mo_wordMul
433 translateOp WordQuotOp = Just mo_wordUQuot
434 translateOp WordRemOp = Just mo_wordURem
436 translateOp AddrGeOp = Just mo_wordUGe
437 translateOp AddrLeOp = Just mo_wordULe
438 translateOp AddrGtOp = Just mo_wordUGt
439 translateOp AddrLtOp = Just mo_wordULt
443 translateOp CharEqOp = Just (MO_Eq wordWidth)
444 translateOp CharNeOp = Just (MO_Ne wordWidth)
445 translateOp CharGeOp = Just (MO_U_Ge wordWidth)
446 translateOp CharLeOp = Just (MO_U_Le wordWidth)
447 translateOp CharGtOp = Just (MO_U_Gt wordWidth)
448 translateOp CharLtOp = Just (MO_U_Lt wordWidth)
452 translateOp DoubleEqOp = Just (MO_F_Eq W64)
453 translateOp DoubleNeOp = Just (MO_F_Ne W64)
454 translateOp DoubleGeOp = Just (MO_F_Ge W64)
455 translateOp DoubleLeOp = Just (MO_F_Le W64)
456 translateOp DoubleGtOp = Just (MO_F_Gt W64)
457 translateOp DoubleLtOp = Just (MO_F_Lt W64)
459 translateOp DoubleAddOp = Just (MO_F_Add W64)
460 translateOp DoubleSubOp = Just (MO_F_Sub W64)
461 translateOp DoubleMulOp = Just (MO_F_Mul W64)
462 translateOp DoubleDivOp = Just (MO_F_Quot W64)
463 translateOp DoubleNegOp = Just (MO_F_Neg W64)
467 translateOp FloatEqOp = Just (MO_F_Eq W32)
468 translateOp FloatNeOp = Just (MO_F_Ne W32)
469 translateOp FloatGeOp = Just (MO_F_Ge W32)
470 translateOp FloatLeOp = Just (MO_F_Le W32)
471 translateOp FloatGtOp = Just (MO_F_Gt W32)
472 translateOp FloatLtOp = Just (MO_F_Lt W32)
474 translateOp FloatAddOp = Just (MO_F_Add W32)
475 translateOp FloatSubOp = Just (MO_F_Sub W32)
476 translateOp FloatMulOp = Just (MO_F_Mul W32)
477 translateOp FloatDivOp = Just (MO_F_Quot W32)
478 translateOp FloatNegOp = Just (MO_F_Neg W32)
482 translateOp Int2DoubleOp = Just (MO_SF_Conv wordWidth W64)
483 translateOp Double2IntOp = Just (MO_FS_Conv W64 wordWidth)
485 translateOp Int2FloatOp = Just (MO_SF_Conv wordWidth W32)
486 translateOp Float2IntOp = Just (MO_FS_Conv W32 wordWidth)
488 translateOp Float2DoubleOp = Just (MO_FF_Conv W32 W64)
489 translateOp Double2FloatOp = Just (MO_FF_Conv W64 W32)
491 -- Word comparisons masquerading as more exotic things.
493 translateOp SameMutVarOp = Just mo_wordEq
494 translateOp SameMVarOp = Just mo_wordEq
495 translateOp SameMutableArrayOp = Just mo_wordEq
496 translateOp SameMutableByteArrayOp = Just mo_wordEq
497 translateOp SameTVarOp = Just mo_wordEq
498 translateOp EqStablePtrOp = Just mo_wordEq
500 translateOp _ = Nothing
502 -- These primops are implemented by CallishMachOps, because they sometimes
503 -- turn into foreign calls depending on the backend.
505 callishOp :: PrimOp -> Maybe CallishMachOp
506 callishOp DoublePowerOp = Just MO_F64_Pwr
507 callishOp DoubleSinOp = Just MO_F64_Sin
508 callishOp DoubleCosOp = Just MO_F64_Cos
509 callishOp DoubleTanOp = Just MO_F64_Tan
510 callishOp DoubleSinhOp = Just MO_F64_Sinh
511 callishOp DoubleCoshOp = Just MO_F64_Cosh
512 callishOp DoubleTanhOp = Just MO_F64_Tanh
513 callishOp DoubleAsinOp = Just MO_F64_Asin
514 callishOp DoubleAcosOp = Just MO_F64_Acos
515 callishOp DoubleAtanOp = Just MO_F64_Atan
516 callishOp DoubleLogOp = Just MO_F64_Log
517 callishOp DoubleExpOp = Just MO_F64_Exp
518 callishOp DoubleSqrtOp = Just MO_F64_Sqrt
520 callishOp FloatPowerOp = Just MO_F32_Pwr
521 callishOp FloatSinOp = Just MO_F32_Sin
522 callishOp FloatCosOp = Just MO_F32_Cos
523 callishOp FloatTanOp = Just MO_F32_Tan
524 callishOp FloatSinhOp = Just MO_F32_Sinh
525 callishOp FloatCoshOp = Just MO_F32_Cosh
526 callishOp FloatTanhOp = Just MO_F32_Tanh
527 callishOp FloatAsinOp = Just MO_F32_Asin
528 callishOp FloatAcosOp = Just MO_F32_Acos
529 callishOp FloatAtanOp = Just MO_F32_Atan
530 callishOp FloatLogOp = Just MO_F32_Log
531 callishOp FloatExpOp = Just MO_F32_Exp
532 callishOp FloatSqrtOp = Just MO_F32_Sqrt
534 callishOp _ = Nothing
536 ------------------------------------------------------------------------------
537 -- Helpers for translating various minor variants of array indexing.
539 -- Bytearrays outside the heap; hence non-pointers
540 doIndexOffAddrOp, doIndexByteArrayOp
541 :: Maybe MachOp -> CmmType
542 -> [LocalReg] -> [CmmExpr] -> Code
543 doIndexOffAddrOp maybe_post_read_cast rep [res] [addr,idx]
544 = mkBasicIndexedRead 0 maybe_post_read_cast rep res addr idx
545 doIndexOffAddrOp _ _ _ _
546 = panic "CgPrimOp: doIndexOffAddrOp"
548 doIndexByteArrayOp maybe_post_read_cast rep [res] [addr,idx]
549 = mkBasicIndexedRead arrWordsHdrSize maybe_post_read_cast rep res addr idx
550 doIndexByteArrayOp _ _ _ _
551 = panic "CgPrimOp: doIndexByteArrayOp"
553 doReadPtrArrayOp :: LocalReg -> CmmExpr -> CmmExpr -> Code
554 doReadPtrArrayOp res addr idx
555 = mkBasicIndexedRead arrPtrsHdrSize Nothing gcWord res addr idx
558 doWriteOffAddrOp, doWriteByteArrayOp
559 :: Maybe MachOp -> CmmType
560 -> [LocalReg] -> [CmmExpr] -> Code
561 doWriteOffAddrOp maybe_pre_write_cast rep [] [addr,idx,val]
562 = mkBasicIndexedWrite 0 maybe_pre_write_cast rep addr idx val
563 doWriteOffAddrOp _ _ _ _
564 = panic "CgPrimOp: doWriteOffAddrOp"
566 doWriteByteArrayOp maybe_pre_write_cast rep [] [addr,idx,val]
567 = mkBasicIndexedWrite arrWordsHdrSize maybe_pre_write_cast rep addr idx val
568 doWriteByteArrayOp _ _ _ _
569 = panic "CgPrimOp: doWriteByteArrayOp"
571 doWritePtrArrayOp :: CmmExpr -> CmmExpr -> CmmExpr -> Code
572 doWritePtrArrayOp addr idx val
573 = do stmtC (setInfo addr (CmmLit (CmmLabel mkMAP_DIRTY_infoLabel)))
574 mkBasicIndexedWrite arrPtrsHdrSize Nothing bWord addr idx val
577 mkBasicIndexedRead :: ByteOff -> Maybe MachOp -> CmmType
578 -> LocalReg -> CmmExpr -> CmmExpr -> Code
579 mkBasicIndexedRead off Nothing read_rep res base idx
580 = stmtC (CmmAssign (CmmLocal res) (cmmLoadIndexOffExpr off read_rep base idx))
581 mkBasicIndexedRead off (Just cast) read_rep res base idx
582 = stmtC (CmmAssign (CmmLocal res) (CmmMachOp cast [
583 cmmLoadIndexOffExpr off read_rep base idx]))
585 mkBasicIndexedWrite :: ByteOff -> Maybe MachOp -> CmmType
586 -> CmmExpr -> CmmExpr -> CmmExpr -> Code
587 mkBasicIndexedWrite off Nothing write_rep base idx val
588 = stmtC (CmmStore (cmmIndexOffExpr off write_rep base idx) val)
589 mkBasicIndexedWrite off (Just cast) write_rep base idx val
590 = stmtC (CmmStore (cmmIndexOffExpr off write_rep base idx) (CmmMachOp cast [val]))
592 -- ----------------------------------------------------------------------------
595 cmmIndexOffExpr :: ByteOff -> CmmType -> CmmExpr -> CmmExpr -> CmmExpr
596 cmmIndexOffExpr off rep base idx
597 = cmmIndexExpr (typeWidth rep) (cmmOffsetB base off) idx
599 cmmLoadIndexOffExpr :: ByteOff -> CmmType -> CmmExpr -> CmmExpr -> CmmExpr
600 cmmLoadIndexOffExpr off rep base idx
601 = CmmLoad (cmmIndexOffExpr off rep base idx) rep
603 setInfo :: CmmExpr -> CmmExpr -> CmmStmt
604 setInfo closure_ptr info_ptr = CmmStore closure_ptr info_ptr