1 -----------------------------------------------------------------------------
3 -- Code generation for PrimOps.
5 -- (c) The University of Glasgow 2004-2006
7 -----------------------------------------------------------------------------
31 -- ---------------------------------------------------------------------------
32 -- Code generation for PrimOps
34 cgPrimOp :: CmmFormals -- where to put the results
36 -> [StgArg] -- arguments
37 -> StgLiveVars -- live vars, in case we need to save them
40 cgPrimOp results op args live
41 = do arg_exprs <- getArgAmodes args
42 let non_void_args = [ e | (r,e) <- arg_exprs, nonVoidArg r ]
43 emitPrimOp results op non_void_args live
46 emitPrimOp :: CmmFormals -- where to put the results
48 -> [CmmExpr] -- arguments
49 -> StgLiveVars -- live vars, in case we need to save them
52 -- First we handle various awkward cases specially. The remaining
53 -- easy cases are then handled by translateOp, defined below.
55 emitPrimOp [res_r,res_c] IntAddCOp [aa,bb] _
57 With some bit-twiddling, we can define int{Add,Sub}Czh portably in
58 C, and without needing any comparisons. This may not be the
59 fastest way to do it - if you have better code, please send it! --SDM
61 Return : r = a + b, c = 0 if no overflow, 1 on overflow.
63 We currently don't make use of the r value if c is != 0 (i.e.
64 overflow), we just convert to big integers and try again. This
65 could be improved by making r and c the correct values for
66 plugging into a new J#.
68 { r = ((I_)(a)) + ((I_)(b)); \
69 c = ((StgWord)(~(((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
70 >> (BITS_IN (I_) - 1); \
72 Wading through the mass of bracketry, it seems to reduce to:
73 c = ( (~(a^b)) & (a^r) ) >>unsigned (BITS_IN(I_)-1)
77 CmmAssign (CmmLocal res_r) (CmmMachOp mo_wordAdd [aa,bb]),
78 CmmAssign (CmmLocal res_c) $
79 CmmMachOp mo_wordUShr [
80 CmmMachOp mo_wordAnd [
81 CmmMachOp mo_wordNot [CmmMachOp mo_wordXor [aa,bb]],
82 CmmMachOp mo_wordXor [aa, CmmReg (CmmLocal res_r)]
84 CmmLit (mkIntCLit (wORD_SIZE_IN_BITS - 1))
89 emitPrimOp [res_r,res_c] IntSubCOp [aa,bb] _
91 #define subIntCzh(r,c,a,b) \
92 { r = ((I_)(a)) - ((I_)(b)); \
93 c = ((StgWord)((((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
94 >> (BITS_IN (I_) - 1); \
97 c = ((a^b) & (a^r)) >>unsigned (BITS_IN(I_)-1)
100 CmmAssign (CmmLocal res_r) (CmmMachOp mo_wordSub [aa,bb]),
101 CmmAssign (CmmLocal res_c) $
102 CmmMachOp mo_wordUShr [
103 CmmMachOp mo_wordAnd [
104 CmmMachOp mo_wordXor [aa,bb],
105 CmmMachOp mo_wordXor [aa, CmmReg (CmmLocal res_r)]
107 CmmLit (mkIntCLit (wORD_SIZE_IN_BITS - 1))
112 emitPrimOp [res] ParOp [arg] live
114 -- for now, just implement this in a C function
115 -- later, we might want to inline it.
116 vols <- getVolatileRegs live
117 emitForeignCall' PlayRisky
118 [CmmHinted res NoHint]
119 (CmmCallee newspark CCallConv)
120 [ (CmmHinted (CmmReg (CmmGlobal BaseReg)) AddrHint)
121 , (CmmHinted arg AddrHint) ]
123 NoC_SRT -- No SRT b/c we do PlayRisky
126 newspark = CmmLit (CmmLabel (mkCmmCodeLabel rtsPackageId (fsLit "newSpark")))
128 emitPrimOp [res] ReadMutVarOp [mutv] _
129 = stmtC (CmmAssign (CmmLocal res) (cmmLoadIndexW mutv fixedHdrSize gcWord))
131 emitPrimOp [] WriteMutVarOp [mutv,var] live
133 stmtC (CmmStore (cmmOffsetW mutv fixedHdrSize) var)
134 vols <- getVolatileRegs live
135 emitForeignCall' PlayRisky
137 (CmmCallee (CmmLit (CmmLabel mkDirty_MUT_VAR_Label))
139 [ (CmmHinted (CmmReg (CmmGlobal BaseReg)) AddrHint)
140 , (CmmHinted mutv AddrHint) ]
142 NoC_SRT -- No SRT b/c we do PlayRisky
145 -- #define sizzeofByteArrayzh(r,a) \
146 -- r = ((StgArrWords *)(a))->bytes
147 emitPrimOp [res] SizeofByteArrayOp [arg] _
149 CmmAssign (CmmLocal res) (cmmLoadIndexW arg fixedHdrSize bWord)
151 -- #define sizzeofMutableByteArrayzh(r,a) \
152 -- r = ((StgArrWords *)(a))->bytes
153 emitPrimOp [res] SizeofMutableByteArrayOp [arg] live
154 = emitPrimOp [res] SizeofByteArrayOp [arg] live
157 -- #define touchzh(o) /* nothing */
158 emitPrimOp [] TouchOp [_] _
161 -- #define byteArrayContentszh(r,a) r = BYTE_ARR_CTS(a)
162 emitPrimOp [res] ByteArrayContents_Char [arg] _
163 = stmtC (CmmAssign (CmmLocal res) (cmmOffsetB arg arrWordsHdrSize))
165 -- #define stableNameToIntzh(r,s) (r = ((StgStableName *)s)->sn)
166 emitPrimOp [res] StableNameToIntOp [arg] _
167 = stmtC (CmmAssign (CmmLocal res) (cmmLoadIndexW arg fixedHdrSize bWord))
169 -- #define eqStableNamezh(r,sn1,sn2) \
170 -- (r = (((StgStableName *)sn1)->sn == ((StgStableName *)sn2)->sn))
171 emitPrimOp [res] EqStableNameOp [arg1,arg2] _
172 = stmtC (CmmAssign (CmmLocal res) (CmmMachOp mo_wordEq [
173 cmmLoadIndexW arg1 fixedHdrSize bWord,
174 cmmLoadIndexW arg2 fixedHdrSize bWord
178 emitPrimOp [res] ReallyUnsafePtrEqualityOp [arg1,arg2] _
179 = stmtC (CmmAssign (CmmLocal res) (CmmMachOp mo_wordEq [arg1,arg2]))
181 -- #define addrToHValuezh(r,a) r=(P_)a
182 emitPrimOp [res] AddrToHValueOp [arg] _
183 = stmtC (CmmAssign (CmmLocal res) arg)
185 -- #define dataToTagzh(r,a) r=(GET_TAG(((StgClosure *)a)->header.info))
186 -- Note: argument may be tagged!
187 emitPrimOp [res] DataToTagOp [arg] _
188 = stmtC (CmmAssign (CmmLocal res) (getConstrTag (cmmUntag arg)))
190 {- Freezing arrays-of-ptrs requires changing an info table, for the
191 benefit of the generational collector. It needs to scavenge mutable
192 objects, even if they are in old space. When they become immutable,
193 they can be removed from this scavenge list. -}
195 -- #define unsafeFreezzeArrayzh(r,a)
197 -- SET_INFO((StgClosure *)a,&stg_MUT_ARR_PTRS_FROZEN0_info);
200 emitPrimOp [res] UnsafeFreezeArrayOp [arg] _
201 = stmtsC [ setInfo arg (CmmLit (CmmLabel mkMAP_FROZEN_infoLabel)),
202 CmmAssign (CmmLocal res) arg ]
204 -- #define unsafeFreezzeByteArrayzh(r,a) r=(a)
205 emitPrimOp [res] UnsafeFreezeByteArrayOp [arg] _
206 = stmtC (CmmAssign (CmmLocal res) arg)
208 -- Reading/writing pointer arrays
210 emitPrimOp [r] ReadArrayOp [obj,ix] _ = doReadPtrArrayOp r obj ix
211 emitPrimOp [r] IndexArrayOp [obj,ix] _ = doReadPtrArrayOp r obj ix
212 emitPrimOp [] WriteArrayOp [obj,ix,v] _ = doWritePtrArrayOp obj ix v
216 emitPrimOp res IndexOffAddrOp_Char args _ = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
217 emitPrimOp res IndexOffAddrOp_WideChar args _ = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
218 emitPrimOp res IndexOffAddrOp_Int args _ = doIndexOffAddrOp Nothing bWord res args
219 emitPrimOp res IndexOffAddrOp_Word args _ = doIndexOffAddrOp Nothing bWord res args
220 emitPrimOp res IndexOffAddrOp_Addr args _ = doIndexOffAddrOp Nothing bWord res args
221 emitPrimOp res IndexOffAddrOp_Float args _ = doIndexOffAddrOp Nothing f32 res args
222 emitPrimOp res IndexOffAddrOp_Double args _ = doIndexOffAddrOp Nothing f64 res args
223 emitPrimOp res IndexOffAddrOp_StablePtr args _ = doIndexOffAddrOp Nothing bWord res args
224 emitPrimOp res IndexOffAddrOp_Int8 args _ = doIndexOffAddrOp (Just mo_s_8ToWord) b8 res args
225 emitPrimOp res IndexOffAddrOp_Int16 args _ = doIndexOffAddrOp (Just mo_s_16ToWord) b16 res args
226 emitPrimOp res IndexOffAddrOp_Int32 args _ = doIndexOffAddrOp (Just mo_s_32ToWord) b32 res args
227 emitPrimOp res IndexOffAddrOp_Int64 args _ = doIndexOffAddrOp Nothing b64 res args
228 emitPrimOp res IndexOffAddrOp_Word8 args _ = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
229 emitPrimOp res IndexOffAddrOp_Word16 args _ = doIndexOffAddrOp (Just mo_u_16ToWord) b16 res args
230 emitPrimOp res IndexOffAddrOp_Word32 args _ = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
231 emitPrimOp res IndexOffAddrOp_Word64 args _ = doIndexOffAddrOp Nothing b64 res args
233 -- ReadXXXoffAddr, which are identical, for our purposes, to IndexXXXoffAddr.
235 emitPrimOp res ReadOffAddrOp_Char args _ = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
236 emitPrimOp res ReadOffAddrOp_WideChar args _ = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
237 emitPrimOp res ReadOffAddrOp_Int args _ = doIndexOffAddrOp Nothing bWord res args
238 emitPrimOp res ReadOffAddrOp_Word args _ = doIndexOffAddrOp Nothing bWord res args
239 emitPrimOp res ReadOffAddrOp_Addr args _ = doIndexOffAddrOp Nothing bWord res args
240 emitPrimOp res ReadOffAddrOp_Float args _ = doIndexOffAddrOp Nothing f32 res args
241 emitPrimOp res ReadOffAddrOp_Double args _ = doIndexOffAddrOp Nothing f64 res args
242 emitPrimOp res ReadOffAddrOp_StablePtr args _ = doIndexOffAddrOp Nothing bWord res args
243 emitPrimOp res ReadOffAddrOp_Int8 args _ = doIndexOffAddrOp (Just mo_s_8ToWord) b8 res args
244 emitPrimOp res ReadOffAddrOp_Int16 args _ = doIndexOffAddrOp (Just mo_s_16ToWord) b16 res args
245 emitPrimOp res ReadOffAddrOp_Int32 args _ = doIndexOffAddrOp (Just mo_s_32ToWord) b32 res args
246 emitPrimOp res ReadOffAddrOp_Int64 args _ = doIndexOffAddrOp Nothing b64 res args
247 emitPrimOp res ReadOffAddrOp_Word8 args _ = doIndexOffAddrOp (Just mo_u_8ToWord) b8 res args
248 emitPrimOp res ReadOffAddrOp_Word16 args _ = doIndexOffAddrOp (Just mo_u_16ToWord) b16 res args
249 emitPrimOp res ReadOffAddrOp_Word32 args _ = doIndexOffAddrOp (Just mo_u_32ToWord) b32 res args
250 emitPrimOp res ReadOffAddrOp_Word64 args _ = doIndexOffAddrOp Nothing b64 res args
254 emitPrimOp res IndexByteArrayOp_Char args _ = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
255 emitPrimOp res IndexByteArrayOp_WideChar args _ = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
256 emitPrimOp res IndexByteArrayOp_Int args _ = doIndexByteArrayOp Nothing bWord res args
257 emitPrimOp res IndexByteArrayOp_Word args _ = doIndexByteArrayOp Nothing bWord res args
258 emitPrimOp res IndexByteArrayOp_Addr args _ = doIndexByteArrayOp Nothing bWord res args
259 emitPrimOp res IndexByteArrayOp_Float args _ = doIndexByteArrayOp Nothing f32 res args
260 emitPrimOp res IndexByteArrayOp_Double args _ = doIndexByteArrayOp Nothing f64 res args
261 emitPrimOp res IndexByteArrayOp_StablePtr args _ = doIndexByteArrayOp Nothing bWord res args
262 emitPrimOp res IndexByteArrayOp_Int8 args _ = doIndexByteArrayOp (Just mo_s_8ToWord) b8 res args
263 emitPrimOp res IndexByteArrayOp_Int16 args _ = doIndexByteArrayOp (Just mo_s_16ToWord) b16 res args
264 emitPrimOp res IndexByteArrayOp_Int32 args _ = doIndexByteArrayOp (Just mo_s_32ToWord) b32 res args
265 emitPrimOp res IndexByteArrayOp_Int64 args _ = doIndexByteArrayOp Nothing b64 res args
266 emitPrimOp res IndexByteArrayOp_Word8 args _ = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
267 emitPrimOp res IndexByteArrayOp_Word16 args _ = doIndexByteArrayOp (Just mo_u_16ToWord) b16 res args
268 emitPrimOp res IndexByteArrayOp_Word32 args _ = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
269 emitPrimOp res IndexByteArrayOp_Word64 args _ = doIndexByteArrayOp Nothing b64 res args
271 -- ReadXXXArray, identical to IndexXXXArray.
273 emitPrimOp res ReadByteArrayOp_Char args _ = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
274 emitPrimOp res ReadByteArrayOp_WideChar args _ = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
275 emitPrimOp res ReadByteArrayOp_Int args _ = doIndexByteArrayOp Nothing bWord res args
276 emitPrimOp res ReadByteArrayOp_Word args _ = doIndexByteArrayOp Nothing bWord res args
277 emitPrimOp res ReadByteArrayOp_Addr args _ = doIndexByteArrayOp Nothing bWord res args
278 emitPrimOp res ReadByteArrayOp_Float args _ = doIndexByteArrayOp Nothing f32 res args
279 emitPrimOp res ReadByteArrayOp_Double args _ = doIndexByteArrayOp Nothing f64 res args
280 emitPrimOp res ReadByteArrayOp_StablePtr args _ = doIndexByteArrayOp Nothing bWord res args
281 emitPrimOp res ReadByteArrayOp_Int8 args _ = doIndexByteArrayOp (Just mo_s_8ToWord) b8 res args
282 emitPrimOp res ReadByteArrayOp_Int16 args _ = doIndexByteArrayOp (Just mo_s_16ToWord) b16 res args
283 emitPrimOp res ReadByteArrayOp_Int32 args _ = doIndexByteArrayOp (Just mo_s_32ToWord) b32 res args
284 emitPrimOp res ReadByteArrayOp_Int64 args _ = doIndexByteArrayOp Nothing b64 res args
285 emitPrimOp res ReadByteArrayOp_Word8 args _ = doIndexByteArrayOp (Just mo_u_8ToWord) b8 res args
286 emitPrimOp res ReadByteArrayOp_Word16 args _ = doIndexByteArrayOp (Just mo_u_16ToWord) b16 res args
287 emitPrimOp res ReadByteArrayOp_Word32 args _ = doIndexByteArrayOp (Just mo_u_32ToWord) b32 res args
288 emitPrimOp res ReadByteArrayOp_Word64 args _ = doIndexByteArrayOp Nothing b64 res args
292 emitPrimOp res WriteOffAddrOp_Char args _ = doWriteOffAddrOp (Just mo_WordTo8) b8 res args
293 emitPrimOp res WriteOffAddrOp_WideChar args _ = doWriteOffAddrOp (Just mo_WordTo32) b32 res args
294 emitPrimOp res WriteOffAddrOp_Int args _ = doWriteOffAddrOp Nothing bWord res args
295 emitPrimOp res WriteOffAddrOp_Word args _ = doWriteOffAddrOp Nothing bWord res args
296 emitPrimOp res WriteOffAddrOp_Addr args _ = doWriteOffAddrOp Nothing bWord res args
297 emitPrimOp res WriteOffAddrOp_Float args _ = doWriteOffAddrOp Nothing f32 res args
298 emitPrimOp res WriteOffAddrOp_Double args _ = doWriteOffAddrOp Nothing f64 res args
299 emitPrimOp res WriteOffAddrOp_StablePtr args _ = doWriteOffAddrOp Nothing bWord res args
300 emitPrimOp res WriteOffAddrOp_Int8 args _ = doWriteOffAddrOp (Just mo_WordTo8) b8 res args
301 emitPrimOp res WriteOffAddrOp_Int16 args _ = doWriteOffAddrOp (Just mo_WordTo16) b16 res args
302 emitPrimOp res WriteOffAddrOp_Int32 args _ = doWriteOffAddrOp (Just mo_WordTo32) b32 res args
303 emitPrimOp res WriteOffAddrOp_Int64 args _ = doWriteOffAddrOp Nothing b64 res args
304 emitPrimOp res WriteOffAddrOp_Word8 args _ = doWriteOffAddrOp (Just mo_WordTo8) b8 res args
305 emitPrimOp res WriteOffAddrOp_Word16 args _ = doWriteOffAddrOp (Just mo_WordTo16) b16 res args
306 emitPrimOp res WriteOffAddrOp_Word32 args _ = doWriteOffAddrOp (Just mo_WordTo32) b32 res args
307 emitPrimOp res WriteOffAddrOp_Word64 args _ = doWriteOffAddrOp Nothing b64 res args
311 emitPrimOp res WriteByteArrayOp_Char args _ = doWriteByteArrayOp (Just mo_WordTo8) b8 res args
312 emitPrimOp res WriteByteArrayOp_WideChar args _ = doWriteByteArrayOp (Just mo_WordTo32) b32 res args
313 emitPrimOp res WriteByteArrayOp_Int args _ = doWriteByteArrayOp Nothing bWord res args
314 emitPrimOp res WriteByteArrayOp_Word args _ = doWriteByteArrayOp Nothing bWord res args
315 emitPrimOp res WriteByteArrayOp_Addr args _ = doWriteByteArrayOp Nothing bWord res args
316 emitPrimOp res WriteByteArrayOp_Float args _ = doWriteByteArrayOp Nothing f32 res args
317 emitPrimOp res WriteByteArrayOp_Double args _ = doWriteByteArrayOp Nothing f64 res args
318 emitPrimOp res WriteByteArrayOp_StablePtr args _ = doWriteByteArrayOp Nothing bWord res args
319 emitPrimOp res WriteByteArrayOp_Int8 args _ = doWriteByteArrayOp (Just mo_WordTo8) b8 res args
320 emitPrimOp res WriteByteArrayOp_Int16 args _ = doWriteByteArrayOp (Just mo_WordTo16) b16 res args
321 emitPrimOp res WriteByteArrayOp_Int32 args _ = doWriteByteArrayOp (Just mo_WordTo32) b32 res args
322 emitPrimOp res WriteByteArrayOp_Int64 args _ = doWriteByteArrayOp Nothing b64 res args
323 emitPrimOp res WriteByteArrayOp_Word8 args _ = doWriteByteArrayOp (Just mo_WordTo8) b8 res args
324 emitPrimOp res WriteByteArrayOp_Word16 args _ = doWriteByteArrayOp (Just mo_WordTo16) b16 res args
325 emitPrimOp res WriteByteArrayOp_Word32 args _ = doWriteByteArrayOp (Just mo_WordTo32) b32 res args
326 emitPrimOp res WriteByteArrayOp_Word64 args _ = doWriteByteArrayOp Nothing b64 res args
329 -- The rest just translate straightforwardly
330 emitPrimOp [res] op [arg] _
332 = stmtC (CmmAssign (CmmLocal res) arg)
334 | Just (mop,rep) <- narrowOp op
335 = stmtC (CmmAssign (CmmLocal res) $
336 CmmMachOp (mop rep wordWidth) [CmmMachOp (mop wordWidth rep) [arg]])
338 emitPrimOp [res] op args live
339 | Just prim <- callishOp op
340 = do vols <- getVolatileRegs live
341 emitForeignCall' PlayRisky
342 [CmmHinted res NoHint]
344 [CmmHinted a NoHint | a<-args] -- ToDo: hints?
346 NoC_SRT -- No SRT b/c we do PlayRisky
349 | Just mop <- translateOp op
350 = let stmt = CmmAssign (CmmLocal res) (CmmMachOp mop args) in
354 = pprPanic "emitPrimOp: can't translate PrimOp" (ppr op)
357 -- These PrimOps are NOPs in Cmm
359 nopOp :: PrimOp -> Bool
360 nopOp Int2WordOp = True
361 nopOp Word2IntOp = True
362 nopOp Int2AddrOp = True
363 nopOp Addr2IntOp = True
364 nopOp ChrOp = True -- Int# and Char# are rep'd the same
368 -- These PrimOps turn into double casts
370 narrowOp :: PrimOp -> Maybe (Width -> Width -> MachOp, Width)
371 narrowOp Narrow8IntOp = Just (MO_SS_Conv, W8)
372 narrowOp Narrow16IntOp = Just (MO_SS_Conv, W16)
373 narrowOp Narrow32IntOp = Just (MO_SS_Conv, W32)
374 narrowOp Narrow8WordOp = Just (MO_UU_Conv, W8)
375 narrowOp Narrow16WordOp = Just (MO_UU_Conv, W16)
376 narrowOp Narrow32WordOp = Just (MO_UU_Conv, W32)
379 -- Native word signless ops
381 translateOp :: PrimOp -> Maybe MachOp
382 translateOp IntAddOp = Just mo_wordAdd
383 translateOp IntSubOp = Just mo_wordSub
384 translateOp WordAddOp = Just mo_wordAdd
385 translateOp WordSubOp = Just mo_wordSub
386 translateOp AddrAddOp = Just mo_wordAdd
387 translateOp AddrSubOp = Just mo_wordSub
389 translateOp IntEqOp = Just mo_wordEq
390 translateOp IntNeOp = Just mo_wordNe
391 translateOp WordEqOp = Just mo_wordEq
392 translateOp WordNeOp = Just mo_wordNe
393 translateOp AddrEqOp = Just mo_wordEq
394 translateOp AddrNeOp = Just mo_wordNe
396 translateOp AndOp = Just mo_wordAnd
397 translateOp OrOp = Just mo_wordOr
398 translateOp XorOp = Just mo_wordXor
399 translateOp NotOp = Just mo_wordNot
400 translateOp SllOp = Just mo_wordShl
401 translateOp SrlOp = Just mo_wordUShr
403 translateOp AddrRemOp = Just mo_wordURem
405 -- Native word signed ops
407 translateOp IntMulOp = Just mo_wordMul
408 translateOp IntMulMayOfloOp = Just (MO_S_MulMayOflo wordWidth)
409 translateOp IntQuotOp = Just mo_wordSQuot
410 translateOp IntRemOp = Just mo_wordSRem
411 translateOp IntNegOp = Just mo_wordSNeg
414 translateOp IntGeOp = Just mo_wordSGe
415 translateOp IntLeOp = Just mo_wordSLe
416 translateOp IntGtOp = Just mo_wordSGt
417 translateOp IntLtOp = Just mo_wordSLt
419 translateOp ISllOp = Just mo_wordShl
420 translateOp ISraOp = Just mo_wordSShr
421 translateOp ISrlOp = Just mo_wordUShr
423 -- Native word unsigned ops
425 translateOp WordGeOp = Just mo_wordUGe
426 translateOp WordLeOp = Just mo_wordULe
427 translateOp WordGtOp = Just mo_wordUGt
428 translateOp WordLtOp = Just mo_wordULt
430 translateOp WordMulOp = Just mo_wordMul
431 translateOp WordQuotOp = Just mo_wordUQuot
432 translateOp WordRemOp = Just mo_wordURem
434 translateOp AddrGeOp = Just mo_wordUGe
435 translateOp AddrLeOp = Just mo_wordULe
436 translateOp AddrGtOp = Just mo_wordUGt
437 translateOp AddrLtOp = Just mo_wordULt
441 translateOp CharEqOp = Just (MO_Eq wordWidth)
442 translateOp CharNeOp = Just (MO_Ne wordWidth)
443 translateOp CharGeOp = Just (MO_U_Ge wordWidth)
444 translateOp CharLeOp = Just (MO_U_Le wordWidth)
445 translateOp CharGtOp = Just (MO_U_Gt wordWidth)
446 translateOp CharLtOp = Just (MO_U_Lt wordWidth)
450 translateOp DoubleEqOp = Just (MO_F_Eq W64)
451 translateOp DoubleNeOp = Just (MO_F_Ne W64)
452 translateOp DoubleGeOp = Just (MO_F_Ge W64)
453 translateOp DoubleLeOp = Just (MO_F_Le W64)
454 translateOp DoubleGtOp = Just (MO_F_Gt W64)
455 translateOp DoubleLtOp = Just (MO_F_Lt W64)
457 translateOp DoubleAddOp = Just (MO_F_Add W64)
458 translateOp DoubleSubOp = Just (MO_F_Sub W64)
459 translateOp DoubleMulOp = Just (MO_F_Mul W64)
460 translateOp DoubleDivOp = Just (MO_F_Quot W64)
461 translateOp DoubleNegOp = Just (MO_F_Neg W64)
465 translateOp FloatEqOp = Just (MO_F_Eq W32)
466 translateOp FloatNeOp = Just (MO_F_Ne W32)
467 translateOp FloatGeOp = Just (MO_F_Ge W32)
468 translateOp FloatLeOp = Just (MO_F_Le W32)
469 translateOp FloatGtOp = Just (MO_F_Gt W32)
470 translateOp FloatLtOp = Just (MO_F_Lt W32)
472 translateOp FloatAddOp = Just (MO_F_Add W32)
473 translateOp FloatSubOp = Just (MO_F_Sub W32)
474 translateOp FloatMulOp = Just (MO_F_Mul W32)
475 translateOp FloatDivOp = Just (MO_F_Quot W32)
476 translateOp FloatNegOp = Just (MO_F_Neg W32)
480 translateOp Int2DoubleOp = Just (MO_SF_Conv wordWidth W64)
481 translateOp Double2IntOp = Just (MO_FS_Conv W64 wordWidth)
483 translateOp Int2FloatOp = Just (MO_SF_Conv wordWidth W32)
484 translateOp Float2IntOp = Just (MO_FS_Conv W32 wordWidth)
486 translateOp Float2DoubleOp = Just (MO_FF_Conv W32 W64)
487 translateOp Double2FloatOp = Just (MO_FF_Conv W64 W32)
489 -- Word comparisons masquerading as more exotic things.
491 translateOp SameMutVarOp = Just mo_wordEq
492 translateOp SameMVarOp = Just mo_wordEq
493 translateOp SameMutableArrayOp = Just mo_wordEq
494 translateOp SameMutableByteArrayOp = Just mo_wordEq
495 translateOp SameTVarOp = Just mo_wordEq
496 translateOp EqStablePtrOp = Just mo_wordEq
498 translateOp _ = Nothing
500 -- These primops are implemented by CallishMachOps, because they sometimes
501 -- turn into foreign calls depending on the backend.
503 callishOp :: PrimOp -> Maybe CallishMachOp
504 callishOp DoublePowerOp = Just MO_F64_Pwr
505 callishOp DoubleSinOp = Just MO_F64_Sin
506 callishOp DoubleCosOp = Just MO_F64_Cos
507 callishOp DoubleTanOp = Just MO_F64_Tan
508 callishOp DoubleSinhOp = Just MO_F64_Sinh
509 callishOp DoubleCoshOp = Just MO_F64_Cosh
510 callishOp DoubleTanhOp = Just MO_F64_Tanh
511 callishOp DoubleAsinOp = Just MO_F64_Asin
512 callishOp DoubleAcosOp = Just MO_F64_Acos
513 callishOp DoubleAtanOp = Just MO_F64_Atan
514 callishOp DoubleLogOp = Just MO_F64_Log
515 callishOp DoubleExpOp = Just MO_F64_Exp
516 callishOp DoubleSqrtOp = Just MO_F64_Sqrt
518 callishOp FloatPowerOp = Just MO_F32_Pwr
519 callishOp FloatSinOp = Just MO_F32_Sin
520 callishOp FloatCosOp = Just MO_F32_Cos
521 callishOp FloatTanOp = Just MO_F32_Tan
522 callishOp FloatSinhOp = Just MO_F32_Sinh
523 callishOp FloatCoshOp = Just MO_F32_Cosh
524 callishOp FloatTanhOp = Just MO_F32_Tanh
525 callishOp FloatAsinOp = Just MO_F32_Asin
526 callishOp FloatAcosOp = Just MO_F32_Acos
527 callishOp FloatAtanOp = Just MO_F32_Atan
528 callishOp FloatLogOp = Just MO_F32_Log
529 callishOp FloatExpOp = Just MO_F32_Exp
530 callishOp FloatSqrtOp = Just MO_F32_Sqrt
532 callishOp _ = Nothing
534 ------------------------------------------------------------------------------
535 -- Helpers for translating various minor variants of array indexing.
537 -- Bytearrays outside the heap; hence non-pointers
538 doIndexOffAddrOp, doIndexByteArrayOp
539 :: Maybe MachOp -> CmmType
540 -> [LocalReg] -> [CmmExpr] -> Code
541 doIndexOffAddrOp maybe_post_read_cast rep [res] [addr,idx]
542 = mkBasicIndexedRead 0 maybe_post_read_cast rep res addr idx
543 doIndexOffAddrOp _ _ _ _
544 = panic "CgPrimOp: doIndexOffAddrOp"
546 doIndexByteArrayOp maybe_post_read_cast rep [res] [addr,idx]
547 = mkBasicIndexedRead arrWordsHdrSize maybe_post_read_cast rep res addr idx
548 doIndexByteArrayOp _ _ _ _
549 = panic "CgPrimOp: doIndexByteArrayOp"
551 doReadPtrArrayOp :: LocalReg -> CmmExpr -> CmmExpr -> Code
552 doReadPtrArrayOp res addr idx
553 = mkBasicIndexedRead arrPtrsHdrSize Nothing gcWord res addr idx
556 doWriteOffAddrOp, doWriteByteArrayOp
557 :: Maybe MachOp -> CmmType
558 -> [LocalReg] -> [CmmExpr] -> Code
559 doWriteOffAddrOp maybe_pre_write_cast rep [] [addr,idx,val]
560 = mkBasicIndexedWrite 0 maybe_pre_write_cast rep addr idx val
561 doWriteOffAddrOp _ _ _ _
562 = panic "CgPrimOp: doWriteOffAddrOp"
564 doWriteByteArrayOp maybe_pre_write_cast rep [] [addr,idx,val]
565 = mkBasicIndexedWrite arrWordsHdrSize maybe_pre_write_cast rep addr idx val
566 doWriteByteArrayOp _ _ _ _
567 = panic "CgPrimOp: doWriteByteArrayOp"
569 doWritePtrArrayOp :: CmmExpr -> CmmExpr -> CmmExpr -> Code
570 doWritePtrArrayOp addr idx val
571 = do mkBasicIndexedWrite arrPtrsHdrSize Nothing bWord addr idx val
572 stmtC (setInfo addr (CmmLit (CmmLabel mkMAP_DIRTY_infoLabel)))
573 -- the write barrier. We must write a byte into the mark table:
574 -- bits8[a + header_size + StgMutArrPtrs_size(a) + x >> N]
577 (cmmOffsetExprW (cmmOffsetB addr arrPtrsHdrSize)
578 (loadArrPtrsSize addr))
579 (CmmMachOp mo_wordUShr [idx,
580 CmmLit (mkIntCLit mUT_ARR_PTRS_CARD_BITS)])
581 ) (CmmLit (CmmInt 1 W8))
583 loadArrPtrsSize :: CmmExpr -> CmmExpr
584 loadArrPtrsSize addr = CmmLoad (cmmOffsetB addr off) bWord
585 where off = fixedHdrSize*wORD_SIZE + oFFSET_StgMutArrPtrs_ptrs
587 mkBasicIndexedRead :: ByteOff -> Maybe MachOp -> CmmType
588 -> LocalReg -> CmmExpr -> CmmExpr -> Code
589 mkBasicIndexedRead off Nothing read_rep res base idx
590 = stmtC (CmmAssign (CmmLocal res) (cmmLoadIndexOffExpr off read_rep base idx))
591 mkBasicIndexedRead off (Just cast) read_rep res base idx
592 = stmtC (CmmAssign (CmmLocal res) (CmmMachOp cast [
593 cmmLoadIndexOffExpr off read_rep base idx]))
595 mkBasicIndexedWrite :: ByteOff -> Maybe MachOp -> CmmType
596 -> CmmExpr -> CmmExpr -> CmmExpr -> Code
597 mkBasicIndexedWrite off Nothing write_rep base idx val
598 = stmtC (CmmStore (cmmIndexOffExpr off write_rep base idx) val)
599 mkBasicIndexedWrite off (Just cast) write_rep base idx val
600 = stmtC (CmmStore (cmmIndexOffExpr off write_rep base idx) (CmmMachOp cast [val]))
602 -- ----------------------------------------------------------------------------
605 cmmIndexOffExpr :: ByteOff -> CmmType -> CmmExpr -> CmmExpr -> CmmExpr
606 cmmIndexOffExpr off rep base idx
607 = cmmIndexExpr (typeWidth rep) (cmmOffsetB base off) idx
609 cmmLoadIndexOffExpr :: ByteOff -> CmmType -> CmmExpr -> CmmExpr -> CmmExpr
610 cmmLoadIndexOffExpr off rep base idx
611 = CmmLoad (cmmIndexOffExpr off rep base idx) rep
613 setInfo :: CmmExpr -> CmmExpr -> CmmStmt
614 setInfo closure_ptr info_ptr = CmmStore closure_ptr info_ptr