mirrored from https://gitlab.haskell.org/ghc/ghc.git
-
Notifications
You must be signed in to change notification settings - Fork 705
/
StgCmmPrim.hs
1703 lines (1456 loc) · 76.2 KB
/
StgCmmPrim.hs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
-----------------------------------------------------------------------------
--
-- Stg to C--: primitive operations
--
-- (c) The University of Glasgow 2004-2006
--
-----------------------------------------------------------------------------
module StgCmmPrim (
cgOpApp,
cgPrimOp -- internal(ish), used by cgCase to get code for a
-- comparison without also turning it into a Bool.
) where
#include "HsVersions.h"
import StgCmmLayout
import StgCmmForeign
import StgCmmEnv
import StgCmmMonad
import StgCmmUtils
import StgCmmTicky
import StgCmmHeap
import StgCmmProf ( costCentreFrom, curCCS )
import DynFlags
import Platform
import BasicTypes
import MkGraph
import StgSyn
import Cmm
import CmmInfo
import Type ( Type, tyConAppTyCon )
import TyCon
import CLabel
import CmmUtils
import PrimOp
import SMRep
import FastString
import Outputable
import Util
import Control.Monad (liftM, when)
import Data.Bits
------------------------------------------------------------------------
-- Primitive operations and foreign calls
------------------------------------------------------------------------
{- Note [Foreign call results]
~~~~~~~~~~~~~~~~~~~~~~~~~~~
A foreign call always returns an unboxed tuple of results, one
of which is the state token. This seems to happen even for pure
calls.
Even if we returned a single result for pure calls, it'd still be
right to wrap it in a singleton unboxed tuple, because the result
might be a Haskell closure pointer, we don't want to evaluate it. -}
----------------------------------
cgOpApp :: StgOp -- The op
-> [StgArg] -- Arguments
-> Type -- Result type (always an unboxed tuple)
-> FCode ReturnKind
-- Foreign calls
cgOpApp (StgFCallOp fcall _) stg_args res_ty
= cgForeignCall fcall stg_args res_ty
-- Note [Foreign call results]
-- tagToEnum# is special: we need to pull the constructor
-- out of the table, and perform an appropriate return.
cgOpApp (StgPrimOp TagToEnumOp) [arg] res_ty
= ASSERT(isEnumerationTyCon tycon)
do { dflags <- getDynFlags
; args' <- getNonVoidArgAmodes [arg]
; let amode = case args' of [amode] -> amode
_ -> panic "TagToEnumOp had void arg"
; emitReturn [tagToClosure dflags tycon amode] }
where
-- If you're reading this code in the attempt to figure
-- out why the compiler panic'ed here, it is probably because
-- you used tagToEnum# in a non-monomorphic setting, e.g.,
-- intToTg :: Enum a => Int -> a ; intToTg (I# x#) = tagToEnum# x#
-- That won't work.
tycon = tyConAppTyCon res_ty
cgOpApp (StgPrimOp primop) args res_ty
| primOpOutOfLine primop
= do { cmm_args <- getNonVoidArgAmodes args
; let fun = CmmLit (CmmLabel (mkRtsPrimOpLabel primop))
; emitCall (NativeNodeCall, NativeReturn) fun cmm_args }
| ReturnsPrim VoidRep <- result_info
= do cgPrimOp [] primop args
emitReturn []
| ReturnsPrim rep <- result_info
= do dflags <- getDynFlags
res <- newTemp (primRepCmmType dflags rep)
cgPrimOp [res] primop args
emitReturn [CmmReg (CmmLocal res)]
| ReturnsAlg tycon <- result_info, isUnboxedTupleTyCon tycon
= do (regs, _hints) <- newUnboxedTupleRegs res_ty
cgPrimOp regs primop args
emitReturn (map (CmmReg . CmmLocal) regs)
| otherwise = panic "cgPrimop"
where
result_info = getPrimOpResultInfo primop
cgOpApp (StgPrimCallOp primcall) args _res_ty
= do { cmm_args <- getNonVoidArgAmodes args
; let fun = CmmLit (CmmLabel (mkPrimCallLabel primcall))
; emitCall (NativeNodeCall, NativeReturn) fun cmm_args }
---------------------------------------------------
cgPrimOp :: [LocalReg] -- where to put the results
-> PrimOp -- the op
-> [StgArg] -- arguments
-> FCode ()
cgPrimOp results op args
= do dflags <- getDynFlags
arg_exprs <- getNonVoidArgAmodes args
emitPrimOp dflags results op arg_exprs
------------------------------------------------------------------------
-- Emitting code for a primop
------------------------------------------------------------------------
emitPrimOp :: DynFlags
-> [LocalReg] -- where to put the results
-> PrimOp -- the op
-> [CmmExpr] -- arguments
-> FCode ()
-- First we handle various awkward cases specially. The remaining
-- easy cases are then handled by translateOp, defined below.
emitPrimOp dflags [res_r,res_c] IntAddCOp [aa,bb]
{-
With some bit-twiddling, we can define int{Add,Sub}Czh portably in
C, and without needing any comparisons. This may not be the
fastest way to do it - if you have better code, please send it! --SDM
Return : r = a + b, c = 0 if no overflow, 1 on overflow.
We currently don't make use of the r value if c is != 0 (i.e.
overflow), we just convert to big integers and try again. This
could be improved by making r and c the correct values for
plugging into a new J#.
{ r = ((I_)(a)) + ((I_)(b)); \
c = ((StgWord)(~(((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
>> (BITS_IN (I_) - 1); \
}
Wading through the mass of bracketry, it seems to reduce to:
c = ( (~(a^b)) & (a^r) ) >>unsigned (BITS_IN(I_)-1)
-}
= emit $ catAGraphs [
mkAssign (CmmLocal res_r) (CmmMachOp (mo_wordAdd dflags) [aa,bb]),
mkAssign (CmmLocal res_c) $
CmmMachOp (mo_wordUShr dflags) [
CmmMachOp (mo_wordAnd dflags) [
CmmMachOp (mo_wordNot dflags) [CmmMachOp (mo_wordXor dflags) [aa,bb]],
CmmMachOp (mo_wordXor dflags) [aa, CmmReg (CmmLocal res_r)]
],
mkIntExpr dflags (wORD_SIZE_IN_BITS dflags - 1)
]
]
emitPrimOp dflags [res_r,res_c] IntSubCOp [aa,bb]
{- Similarly:
#define subIntCzh(r,c,a,b) \
{ r = ((I_)(a)) - ((I_)(b)); \
c = ((StgWord)((((I_)(a))^((I_)(b))) & (((I_)(a))^r))) \
>> (BITS_IN (I_) - 1); \
}
c = ((a^b) & (a^r)) >>unsigned (BITS_IN(I_)-1)
-}
= emit $ catAGraphs [
mkAssign (CmmLocal res_r) (CmmMachOp (mo_wordSub dflags) [aa,bb]),
mkAssign (CmmLocal res_c) $
CmmMachOp (mo_wordUShr dflags) [
CmmMachOp (mo_wordAnd dflags) [
CmmMachOp (mo_wordXor dflags) [aa,bb],
CmmMachOp (mo_wordXor dflags) [aa, CmmReg (CmmLocal res_r)]
],
mkIntExpr dflags (wORD_SIZE_IN_BITS dflags - 1)
]
]
emitPrimOp _ [res] ParOp [arg]
=
-- for now, just implement this in a C function
-- later, we might want to inline it.
emitCCall
[(res,NoHint)]
(CmmLit (CmmLabel (mkForeignLabel (fsLit "newSpark") Nothing ForeignLabelInExternalPackage IsFunction)))
[(CmmReg (CmmGlobal BaseReg), AddrHint), (arg,AddrHint)]
emitPrimOp dflags [res] SparkOp [arg]
= do
-- returns the value of arg in res. We're going to therefore
-- refer to arg twice (once to pass to newSpark(), and once to
-- assign to res), so put it in a temporary.
tmp <- assignTemp arg
tmp2 <- newTemp (bWord dflags)
emitCCall
[(tmp2,NoHint)]
(CmmLit (CmmLabel (mkForeignLabel (fsLit "newSpark") Nothing ForeignLabelInExternalPackage IsFunction)))
[(CmmReg (CmmGlobal BaseReg), AddrHint), ((CmmReg (CmmLocal tmp)), AddrHint)]
emitAssign (CmmLocal res) (CmmReg (CmmLocal tmp))
emitPrimOp dflags [res] GetCCSOfOp [arg]
= emitAssign (CmmLocal res) val
where
val
| gopt Opt_SccProfilingOn dflags = costCentreFrom dflags (cmmUntag dflags arg)
| otherwise = CmmLit (zeroCLit dflags)
emitPrimOp _ [res] GetCurrentCCSOp [_dummy_arg]
= emitAssign (CmmLocal res) curCCS
emitPrimOp dflags [res] ReadMutVarOp [mutv]
= emitAssign (CmmLocal res) (cmmLoadIndexW dflags mutv (fixedHdrSize dflags) (gcWord dflags))
emitPrimOp dflags [] WriteMutVarOp [mutv,var]
= do emitStore (cmmOffsetW dflags mutv (fixedHdrSize dflags)) var
emitCCall
[{-no results-}]
(CmmLit (CmmLabel mkDirty_MUT_VAR_Label))
[(CmmReg (CmmGlobal BaseReg), AddrHint), (mutv,AddrHint)]
-- #define sizzeofByteArrayzh(r,a) \
-- r = ((StgArrWords *)(a))->bytes
emitPrimOp dflags [res] SizeofByteArrayOp [arg]
= emit $ mkAssign (CmmLocal res) (cmmLoadIndexW dflags arg (fixedHdrSize dflags) (bWord dflags))
-- #define sizzeofMutableByteArrayzh(r,a) \
-- r = ((StgArrWords *)(a))->bytes
emitPrimOp dflags [res] SizeofMutableByteArrayOp [arg]
= emitPrimOp dflags [res] SizeofByteArrayOp [arg]
-- #define touchzh(o) /* nothing */
emitPrimOp _ res@[] TouchOp args@[_arg]
= do emitPrimCall res MO_Touch args
-- #define byteArrayContentszh(r,a) r = BYTE_ARR_CTS(a)
emitPrimOp dflags [res] ByteArrayContents_Char [arg]
= emitAssign (CmmLocal res) (cmmOffsetB dflags arg (arrWordsHdrSize dflags))
-- #define stableNameToIntzh(r,s) (r = ((StgStableName *)s)->sn)
emitPrimOp dflags [res] StableNameToIntOp [arg]
= emitAssign (CmmLocal res) (cmmLoadIndexW dflags arg (fixedHdrSize dflags) (bWord dflags))
-- #define eqStableNamezh(r,sn1,sn2) \
-- (r = (((StgStableName *)sn1)->sn == ((StgStableName *)sn2)->sn))
emitPrimOp dflags [res] EqStableNameOp [arg1,arg2]
= emitAssign (CmmLocal res) (CmmMachOp (mo_wordEq dflags) [
cmmLoadIndexW dflags arg1 (fixedHdrSize dflags) (bWord dflags),
cmmLoadIndexW dflags arg2 (fixedHdrSize dflags) (bWord dflags)
])
emitPrimOp dflags [res] ReallyUnsafePtrEqualityOp [arg1,arg2]
= emitAssign (CmmLocal res) (CmmMachOp (mo_wordEq dflags) [arg1,arg2])
-- #define addrToHValuezh(r,a) r=(P_)a
emitPrimOp _ [res] AddrToAnyOp [arg]
= emitAssign (CmmLocal res) arg
-- #define dataToTagzh(r,a) r=(GET_TAG(((StgClosure *)a)->header.info))
-- Note: argument may be tagged!
emitPrimOp dflags [res] DataToTagOp [arg]
= emitAssign (CmmLocal res) (getConstrTag dflags (cmmUntag dflags arg))
{- Freezing arrays-of-ptrs requires changing an info table, for the
benefit of the generational collector. It needs to scavenge mutable
objects, even if they are in old space. When they become immutable,
they can be removed from this scavenge list. -}
-- #define unsafeFreezzeArrayzh(r,a)
-- {
-- SET_INFO((StgClosure *)a,&stg_MUT_ARR_PTRS_FROZEN0_info);
-- r = a;
-- }
emitPrimOp _ [res] UnsafeFreezeArrayOp [arg]
= emit $ catAGraphs
[ setInfo arg (CmmLit (CmmLabel mkMAP_FROZEN_infoLabel)),
mkAssign (CmmLocal res) arg ]
emitPrimOp _ [res] UnsafeFreezeArrayArrayOp [arg]
= emit $ catAGraphs
[ setInfo arg (CmmLit (CmmLabel mkMAP_FROZEN_infoLabel)),
mkAssign (CmmLocal res) arg ]
-- #define unsafeFreezzeByteArrayzh(r,a) r=(a)
emitPrimOp _ [res] UnsafeFreezeByteArrayOp [arg]
= emitAssign (CmmLocal res) arg
-- Copying pointer arrays
emitPrimOp _ [] CopyArrayOp [src,src_off,dst,dst_off,n] =
doCopyArrayOp src src_off dst dst_off n
emitPrimOp _ [] CopyMutableArrayOp [src,src_off,dst,dst_off,n] =
doCopyMutableArrayOp src src_off dst dst_off n
emitPrimOp _ [res] CloneArrayOp [src,src_off,n] =
emitCloneArray mkMAP_FROZEN_infoLabel res src src_off n
emitPrimOp _ [res] CloneMutableArrayOp [src,src_off,n] =
emitCloneArray mkMAP_DIRTY_infoLabel res src src_off n
emitPrimOp _ [res] FreezeArrayOp [src,src_off,n] =
emitCloneArray mkMAP_FROZEN_infoLabel res src src_off n
emitPrimOp _ [res] ThawArrayOp [src,src_off,n] =
emitCloneArray mkMAP_DIRTY_infoLabel res src src_off n
emitPrimOp _ [] CopyArrayArrayOp [src,src_off,dst,dst_off,n] =
doCopyArrayOp src src_off dst dst_off n
emitPrimOp _ [] CopyMutableArrayArrayOp [src,src_off,dst,dst_off,n] =
doCopyMutableArrayOp src src_off dst dst_off n
-- Reading/writing pointer arrays
emitPrimOp _ [res] ReadArrayOp [obj,ix] = doReadPtrArrayOp res obj ix
emitPrimOp _ [res] IndexArrayOp [obj,ix] = doReadPtrArrayOp res obj ix
emitPrimOp _ [] WriteArrayOp [obj,ix,v] = doWritePtrArrayOp obj ix v
emitPrimOp _ [res] IndexArrayArrayOp_ByteArray [obj,ix] = doReadPtrArrayOp res obj ix
emitPrimOp _ [res] IndexArrayArrayOp_ArrayArray [obj,ix] = doReadPtrArrayOp res obj ix
emitPrimOp _ [res] ReadArrayArrayOp_ByteArray [obj,ix] = doReadPtrArrayOp res obj ix
emitPrimOp _ [res] ReadArrayArrayOp_MutableByteArray [obj,ix] = doReadPtrArrayOp res obj ix
emitPrimOp _ [res] ReadArrayArrayOp_ArrayArray [obj,ix] = doReadPtrArrayOp res obj ix
emitPrimOp _ [res] ReadArrayArrayOp_MutableArrayArray [obj,ix] = doReadPtrArrayOp res obj ix
emitPrimOp _ [] WriteArrayArrayOp_ByteArray [obj,ix,v] = doWritePtrArrayOp obj ix v
emitPrimOp _ [] WriteArrayArrayOp_MutableByteArray [obj,ix,v] = doWritePtrArrayOp obj ix v
emitPrimOp _ [] WriteArrayArrayOp_ArrayArray [obj,ix,v] = doWritePtrArrayOp obj ix v
emitPrimOp _ [] WriteArrayArrayOp_MutableArrayArray [obj,ix,v] = doWritePtrArrayOp obj ix v
emitPrimOp dflags [res] SizeofArrayOp [arg]
= emit $ mkAssign (CmmLocal res) (cmmLoadIndexW dflags arg (fixedHdrSize dflags + oFFSET_StgMutArrPtrs_ptrs dflags) (bWord dflags))
emitPrimOp dflags [res] SizeofMutableArrayOp [arg]
= emitPrimOp dflags [res] SizeofArrayOp [arg]
emitPrimOp dflags [res] SizeofArrayArrayOp [arg]
= emitPrimOp dflags [res] SizeofArrayOp [arg]
emitPrimOp dflags [res] SizeofMutableArrayArrayOp [arg]
= emitPrimOp dflags [res] SizeofArrayOp [arg]
-- IndexXXXoffAddr
emitPrimOp dflags res IndexOffAddrOp_Char args = doIndexOffAddrOp (Just (mo_u_8ToWord dflags)) b8 res args
emitPrimOp dflags res IndexOffAddrOp_WideChar args = doIndexOffAddrOp (Just (mo_u_32ToWord dflags)) b32 res args
emitPrimOp dflags res IndexOffAddrOp_Int args = doIndexOffAddrOp Nothing (bWord dflags) res args
emitPrimOp dflags res IndexOffAddrOp_Word args = doIndexOffAddrOp Nothing (bWord dflags) res args
emitPrimOp dflags res IndexOffAddrOp_Addr args = doIndexOffAddrOp Nothing (bWord dflags) res args
emitPrimOp _ res IndexOffAddrOp_Float args = doIndexOffAddrOp Nothing f32 res args
emitPrimOp _ res IndexOffAddrOp_Double args = doIndexOffAddrOp Nothing f64 res args
emitPrimOp dflags res IndexOffAddrOp_StablePtr args = doIndexOffAddrOp Nothing (bWord dflags) res args
emitPrimOp dflags res IndexOffAddrOp_Int8 args = doIndexOffAddrOp (Just (mo_s_8ToWord dflags)) b8 res args
emitPrimOp dflags res IndexOffAddrOp_Int16 args = doIndexOffAddrOp (Just (mo_s_16ToWord dflags)) b16 res args
emitPrimOp dflags res IndexOffAddrOp_Int32 args = doIndexOffAddrOp (Just (mo_s_32ToWord dflags)) b32 res args
emitPrimOp _ res IndexOffAddrOp_Int64 args = doIndexOffAddrOp Nothing b64 res args
emitPrimOp dflags res IndexOffAddrOp_Word8 args = doIndexOffAddrOp (Just (mo_u_8ToWord dflags)) b8 res args
emitPrimOp dflags res IndexOffAddrOp_Word16 args = doIndexOffAddrOp (Just (mo_u_16ToWord dflags)) b16 res args
emitPrimOp dflags res IndexOffAddrOp_Word32 args = doIndexOffAddrOp (Just (mo_u_32ToWord dflags)) b32 res args
emitPrimOp _ res IndexOffAddrOp_Word64 args = doIndexOffAddrOp Nothing b64 res args
-- ReadXXXoffAddr, which are identical, for our purposes, to IndexXXXoffAddr.
emitPrimOp dflags res ReadOffAddrOp_Char args = doIndexOffAddrOp (Just (mo_u_8ToWord dflags)) b8 res args
emitPrimOp dflags res ReadOffAddrOp_WideChar args = doIndexOffAddrOp (Just (mo_u_32ToWord dflags)) b32 res args
emitPrimOp dflags res ReadOffAddrOp_Int args = doIndexOffAddrOp Nothing (bWord dflags) res args
emitPrimOp dflags res ReadOffAddrOp_Word args = doIndexOffAddrOp Nothing (bWord dflags) res args
emitPrimOp dflags res ReadOffAddrOp_Addr args = doIndexOffAddrOp Nothing (bWord dflags) res args
emitPrimOp _ res ReadOffAddrOp_Float args = doIndexOffAddrOp Nothing f32 res args
emitPrimOp _ res ReadOffAddrOp_Double args = doIndexOffAddrOp Nothing f64 res args
emitPrimOp dflags res ReadOffAddrOp_StablePtr args = doIndexOffAddrOp Nothing (bWord dflags) res args
emitPrimOp dflags res ReadOffAddrOp_Int8 args = doIndexOffAddrOp (Just (mo_s_8ToWord dflags)) b8 res args
emitPrimOp dflags res ReadOffAddrOp_Int16 args = doIndexOffAddrOp (Just (mo_s_16ToWord dflags)) b16 res args
emitPrimOp dflags res ReadOffAddrOp_Int32 args = doIndexOffAddrOp (Just (mo_s_32ToWord dflags)) b32 res args
emitPrimOp _ res ReadOffAddrOp_Int64 args = doIndexOffAddrOp Nothing b64 res args
emitPrimOp dflags res ReadOffAddrOp_Word8 args = doIndexOffAddrOp (Just (mo_u_8ToWord dflags)) b8 res args
emitPrimOp dflags res ReadOffAddrOp_Word16 args = doIndexOffAddrOp (Just (mo_u_16ToWord dflags)) b16 res args
emitPrimOp dflags res ReadOffAddrOp_Word32 args = doIndexOffAddrOp (Just (mo_u_32ToWord dflags)) b32 res args
emitPrimOp _ res ReadOffAddrOp_Word64 args = doIndexOffAddrOp Nothing b64 res args
-- IndexXXXArray
emitPrimOp dflags res IndexByteArrayOp_Char args = doIndexByteArrayOp (Just (mo_u_8ToWord dflags)) b8 res args
emitPrimOp dflags res IndexByteArrayOp_WideChar args = doIndexByteArrayOp (Just (mo_u_32ToWord dflags)) b32 res args
emitPrimOp dflags res IndexByteArrayOp_Int args = doIndexByteArrayOp Nothing (bWord dflags) res args
emitPrimOp dflags res IndexByteArrayOp_Word args = doIndexByteArrayOp Nothing (bWord dflags) res args
emitPrimOp dflags res IndexByteArrayOp_Addr args = doIndexByteArrayOp Nothing (bWord dflags) res args
emitPrimOp _ res IndexByteArrayOp_Float args = doIndexByteArrayOp Nothing f32 res args
emitPrimOp _ res IndexByteArrayOp_Double args = doIndexByteArrayOp Nothing f64 res args
emitPrimOp dflags res IndexByteArrayOp_StablePtr args = doIndexByteArrayOp Nothing (bWord dflags) res args
emitPrimOp dflags res IndexByteArrayOp_Int8 args = doIndexByteArrayOp (Just (mo_s_8ToWord dflags)) b8 res args
emitPrimOp dflags res IndexByteArrayOp_Int16 args = doIndexByteArrayOp (Just (mo_s_16ToWord dflags)) b16 res args
emitPrimOp dflags res IndexByteArrayOp_Int32 args = doIndexByteArrayOp (Just (mo_s_32ToWord dflags)) b32 res args
emitPrimOp _ res IndexByteArrayOp_Int64 args = doIndexByteArrayOp Nothing b64 res args
emitPrimOp dflags res IndexByteArrayOp_Word8 args = doIndexByteArrayOp (Just (mo_u_8ToWord dflags)) b8 res args
emitPrimOp dflags res IndexByteArrayOp_Word16 args = doIndexByteArrayOp (Just (mo_u_16ToWord dflags)) b16 res args
emitPrimOp dflags res IndexByteArrayOp_Word32 args = doIndexByteArrayOp (Just (mo_u_32ToWord dflags)) b32 res args
emitPrimOp _ res IndexByteArrayOp_Word64 args = doIndexByteArrayOp Nothing b64 res args
-- ReadXXXArray, identical to IndexXXXArray.
emitPrimOp dflags res ReadByteArrayOp_Char args = doIndexByteArrayOp (Just (mo_u_8ToWord dflags)) b8 res args
emitPrimOp dflags res ReadByteArrayOp_WideChar args = doIndexByteArrayOp (Just (mo_u_32ToWord dflags)) b32 res args
emitPrimOp dflags res ReadByteArrayOp_Int args = doIndexByteArrayOp Nothing (bWord dflags) res args
emitPrimOp dflags res ReadByteArrayOp_Word args = doIndexByteArrayOp Nothing (bWord dflags) res args
emitPrimOp dflags res ReadByteArrayOp_Addr args = doIndexByteArrayOp Nothing (bWord dflags) res args
emitPrimOp _ res ReadByteArrayOp_Float args = doIndexByteArrayOp Nothing f32 res args
emitPrimOp _ res ReadByteArrayOp_Double args = doIndexByteArrayOp Nothing f64 res args
emitPrimOp dflags res ReadByteArrayOp_StablePtr args = doIndexByteArrayOp Nothing (bWord dflags) res args
emitPrimOp dflags res ReadByteArrayOp_Int8 args = doIndexByteArrayOp (Just (mo_s_8ToWord dflags)) b8 res args
emitPrimOp dflags res ReadByteArrayOp_Int16 args = doIndexByteArrayOp (Just (mo_s_16ToWord dflags)) b16 res args
emitPrimOp dflags res ReadByteArrayOp_Int32 args = doIndexByteArrayOp (Just (mo_s_32ToWord dflags)) b32 res args
emitPrimOp _ res ReadByteArrayOp_Int64 args = doIndexByteArrayOp Nothing b64 res args
emitPrimOp dflags res ReadByteArrayOp_Word8 args = doIndexByteArrayOp (Just (mo_u_8ToWord dflags)) b8 res args
emitPrimOp dflags res ReadByteArrayOp_Word16 args = doIndexByteArrayOp (Just (mo_u_16ToWord dflags)) b16 res args
emitPrimOp dflags res ReadByteArrayOp_Word32 args = doIndexByteArrayOp (Just (mo_u_32ToWord dflags)) b32 res args
emitPrimOp _ res ReadByteArrayOp_Word64 args = doIndexByteArrayOp Nothing b64 res args
-- WriteXXXoffAddr
emitPrimOp dflags res WriteOffAddrOp_Char args = doWriteOffAddrOp (Just (mo_WordTo8 dflags)) b8 res args
emitPrimOp dflags res WriteOffAddrOp_WideChar args = doWriteOffAddrOp (Just (mo_WordTo32 dflags)) b32 res args
emitPrimOp dflags res WriteOffAddrOp_Int args = doWriteOffAddrOp Nothing (bWord dflags) res args
emitPrimOp dflags res WriteOffAddrOp_Word args = doWriteOffAddrOp Nothing (bWord dflags) res args
emitPrimOp dflags res WriteOffAddrOp_Addr args = doWriteOffAddrOp Nothing (bWord dflags) res args
emitPrimOp _ res WriteOffAddrOp_Float args = doWriteOffAddrOp Nothing f32 res args
emitPrimOp _ res WriteOffAddrOp_Double args = doWriteOffAddrOp Nothing f64 res args
emitPrimOp dflags res WriteOffAddrOp_StablePtr args = doWriteOffAddrOp Nothing (bWord dflags) res args
emitPrimOp dflags res WriteOffAddrOp_Int8 args = doWriteOffAddrOp (Just (mo_WordTo8 dflags)) b8 res args
emitPrimOp dflags res WriteOffAddrOp_Int16 args = doWriteOffAddrOp (Just (mo_WordTo16 dflags)) b16 res args
emitPrimOp dflags res WriteOffAddrOp_Int32 args = doWriteOffAddrOp (Just (mo_WordTo32 dflags)) b32 res args
emitPrimOp _ res WriteOffAddrOp_Int64 args = doWriteOffAddrOp Nothing b64 res args
emitPrimOp dflags res WriteOffAddrOp_Word8 args = doWriteOffAddrOp (Just (mo_WordTo8 dflags)) b8 res args
emitPrimOp dflags res WriteOffAddrOp_Word16 args = doWriteOffAddrOp (Just (mo_WordTo16 dflags)) b16 res args
emitPrimOp dflags res WriteOffAddrOp_Word32 args = doWriteOffAddrOp (Just (mo_WordTo32 dflags)) b32 res args
emitPrimOp _ res WriteOffAddrOp_Word64 args = doWriteOffAddrOp Nothing b64 res args
-- WriteXXXArray
emitPrimOp dflags res WriteByteArrayOp_Char args = doWriteByteArrayOp (Just (mo_WordTo8 dflags)) b8 res args
emitPrimOp dflags res WriteByteArrayOp_WideChar args = doWriteByteArrayOp (Just (mo_WordTo32 dflags)) b32 res args
emitPrimOp dflags res WriteByteArrayOp_Int args = doWriteByteArrayOp Nothing (bWord dflags) res args
emitPrimOp dflags res WriteByteArrayOp_Word args = doWriteByteArrayOp Nothing (bWord dflags) res args
emitPrimOp dflags res WriteByteArrayOp_Addr args = doWriteByteArrayOp Nothing (bWord dflags) res args
emitPrimOp _ res WriteByteArrayOp_Float args = doWriteByteArrayOp Nothing f32 res args
emitPrimOp _ res WriteByteArrayOp_Double args = doWriteByteArrayOp Nothing f64 res args
emitPrimOp dflags res WriteByteArrayOp_StablePtr args = doWriteByteArrayOp Nothing (bWord dflags) res args
emitPrimOp dflags res WriteByteArrayOp_Int8 args = doWriteByteArrayOp (Just (mo_WordTo8 dflags)) b8 res args
emitPrimOp dflags res WriteByteArrayOp_Int16 args = doWriteByteArrayOp (Just (mo_WordTo16 dflags)) b16 res args
emitPrimOp dflags res WriteByteArrayOp_Int32 args = doWriteByteArrayOp (Just (mo_WordTo32 dflags)) b32 res args
emitPrimOp _ res WriteByteArrayOp_Int64 args = doWriteByteArrayOp Nothing b64 res args
emitPrimOp dflags res WriteByteArrayOp_Word8 args = doWriteByteArrayOp (Just (mo_WordTo8 dflags)) b8 res args
emitPrimOp dflags res WriteByteArrayOp_Word16 args = doWriteByteArrayOp (Just (mo_WordTo16 dflags)) b16 res args
emitPrimOp dflags res WriteByteArrayOp_Word32 args = doWriteByteArrayOp (Just (mo_WordTo32 dflags)) b32 res args
emitPrimOp _ res WriteByteArrayOp_Word64 args = doWriteByteArrayOp Nothing b64 res args
-- Copying and setting byte arrays
emitPrimOp _ [] CopyByteArrayOp [src,src_off,dst,dst_off,n] =
doCopyByteArrayOp src src_off dst dst_off n
emitPrimOp _ [] CopyMutableByteArrayOp [src,src_off,dst,dst_off,n] =
doCopyMutableByteArrayOp src src_off dst dst_off n
emitPrimOp _ [] CopyByteArrayToAddrOp [src,src_off,dst,n] =
doCopyByteArrayToAddrOp src src_off dst n
emitPrimOp _ [] CopyMutableByteArrayToAddrOp [src,src_off,dst,n] =
doCopyMutableByteArrayToAddrOp src src_off dst n
emitPrimOp _ [] CopyAddrToByteArrayOp [src,dst,dst_off,n] =
doCopyAddrToByteArrayOp src dst dst_off n
emitPrimOp _ [] SetByteArrayOp [ba,off,len,c] =
doSetByteArrayOp ba off len c
emitPrimOp _ [res] BSwap16Op [w] = emitBSwapCall res w W16
emitPrimOp _ [res] BSwap32Op [w] = emitBSwapCall res w W32
emitPrimOp _ [res] BSwap64Op [w] = emitBSwapCall res w W64
emitPrimOp dflags [res] BSwapOp [w] = emitBSwapCall res w (wordWidth dflags)
-- Population count
emitPrimOp _ [res] PopCnt8Op [w] = emitPopCntCall res w W8
emitPrimOp _ [res] PopCnt16Op [w] = emitPopCntCall res w W16
emitPrimOp _ [res] PopCnt32Op [w] = emitPopCntCall res w W32
emitPrimOp _ [res] PopCnt64Op [w] = emitPopCntCall res w W64
emitPrimOp dflags [res] PopCntOp [w] = emitPopCntCall res w (wordWidth dflags)
-- Unsigned int to floating point conversions
emitPrimOp _ [res] Word2FloatOp [w] = emitPrimCall [res]
(MO_UF_Conv W32) [w]
emitPrimOp _ [res] Word2DoubleOp [w] = emitPrimCall [res]
(MO_UF_Conv W64) [w]
-- SIMD primops
emitPrimOp dflags [res] (VecBroadcastOp vcat n w) [e] = do
checkVecCompatibility dflags vcat n w
doVecPackOp (vecElemInjectCast dflags vcat w) ty zeros (replicate n e) res
where
zeros :: CmmExpr
zeros = CmmLit $ CmmVec (replicate n zero)
zero :: CmmLit
zero = case vcat of
IntVec -> CmmInt 0 w
WordVec -> CmmInt 0 w
FloatVec -> CmmFloat 0 w
ty :: CmmType
ty = vecVmmType vcat n w
emitPrimOp dflags [res] (VecPackOp vcat n w) es = do
checkVecCompatibility dflags vcat n w
when (length es /= n) $
panic "emitPrimOp: VecPackOp has wrong number of arguments"
doVecPackOp (vecElemInjectCast dflags vcat w) ty zeros es res
where
zeros :: CmmExpr
zeros = CmmLit $ CmmVec (replicate n zero)
zero :: CmmLit
zero = case vcat of
IntVec -> CmmInt 0 w
WordVec -> CmmInt 0 w
FloatVec -> CmmFloat 0 w
ty :: CmmType
ty = vecVmmType vcat n w
emitPrimOp dflags res (VecUnpackOp vcat n w) [arg] = do
checkVecCompatibility dflags vcat n w
when (length res /= n) $
panic "emitPrimOp: VecUnpackOp has wrong number of results"
doVecUnpackOp (vecElemProjectCast dflags vcat w) ty arg res
where
ty :: CmmType
ty = vecVmmType vcat n w
emitPrimOp dflags [res] (VecInsertOp vcat n w) [v,e,i] = do
checkVecCompatibility dflags vcat n w
doVecInsertOp (vecElemInjectCast dflags vcat w) ty v e i res
where
ty :: CmmType
ty = vecVmmType vcat n w
emitPrimOp dflags res (VecIndexByteArrayOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doIndexByteArrayOp Nothing ty res args
where
ty :: CmmType
ty = vecVmmType vcat n w
emitPrimOp dflags res (VecReadByteArrayOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doIndexByteArrayOp Nothing ty res args
where
ty :: CmmType
ty = vecVmmType vcat n w
emitPrimOp dflags res (VecWriteByteArrayOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doWriteByteArrayOp Nothing ty res args
where
ty :: CmmType
ty = vecVmmType vcat n w
emitPrimOp dflags res (VecIndexOffAddrOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doIndexOffAddrOp Nothing ty res args
where
ty :: CmmType
ty = vecVmmType vcat n w
emitPrimOp dflags res (VecReadOffAddrOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doIndexOffAddrOp Nothing ty res args
where
ty :: CmmType
ty = vecVmmType vcat n w
emitPrimOp dflags res (VecWriteOffAddrOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doWriteOffAddrOp Nothing ty res args
where
ty :: CmmType
ty = vecVmmType vcat n w
emitPrimOp dflags res (VecIndexScalarByteArrayOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doIndexByteArrayOpAs Nothing vecty ty res args
where
vecty :: CmmType
vecty = vecVmmType vcat n w
ty :: CmmType
ty = vecCmmCat vcat w
emitPrimOp dflags res (VecReadScalarByteArrayOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doIndexByteArrayOpAs Nothing vecty ty res args
where
vecty :: CmmType
vecty = vecVmmType vcat n w
ty :: CmmType
ty = vecCmmCat vcat w
emitPrimOp dflags res (VecWriteScalarByteArrayOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doWriteByteArrayOp Nothing ty res args
where
ty :: CmmType
ty = vecCmmCat vcat w
emitPrimOp dflags res (VecIndexScalarOffAddrOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doIndexOffAddrOpAs Nothing vecty ty res args
where
vecty :: CmmType
vecty = vecVmmType vcat n w
ty :: CmmType
ty = vecCmmCat vcat w
emitPrimOp dflags res (VecReadScalarOffAddrOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doIndexOffAddrOpAs Nothing vecty ty res args
where
vecty :: CmmType
vecty = vecVmmType vcat n w
ty :: CmmType
ty = vecCmmCat vcat w
emitPrimOp dflags res (VecWriteScalarOffAddrOp vcat n w) args = do
checkVecCompatibility dflags vcat n w
doWriteOffAddrOp Nothing ty res args
where
ty :: CmmType
ty = vecCmmCat vcat w
-- Prefetch
emitPrimOp _ res PrefetchByteArrayOp3 args = doPrefetchByteArrayOp 3 res args
emitPrimOp _ res PrefetchMutableByteArrayOp3 args = doPrefetchByteArrayOp 3 res args
emitPrimOp _ res PrefetchAddrOp3 args = doPrefetchAddrOp 3 res args
emitPrimOp _ res PrefetchByteArrayOp2 args = doPrefetchByteArrayOp 2 res args
emitPrimOp _ res PrefetchMutableByteArrayOp2 args = doPrefetchByteArrayOp 2 res args
emitPrimOp _ res PrefetchAddrOp2 args = doPrefetchAddrOp 2 res args
emitPrimOp _ res PrefetchByteArrayOp1 args = doPrefetchByteArrayOp 1 res args
emitPrimOp _ res PrefetchMutableByteArrayOp1 args = doPrefetchByteArrayOp 1 res args
emitPrimOp _ res PrefetchAddrOp1 args = doPrefetchAddrOp 1 res args
emitPrimOp _ res PrefetchByteArrayOp0 args = doPrefetchByteArrayOp 0 res args
emitPrimOp _ res PrefetchMutableByteArrayOp0 args = doPrefetchByteArrayOp 0 res args
emitPrimOp _ res PrefetchAddrOp0 args = doPrefetchAddrOp 0 res args
-- The rest just translate straightforwardly
emitPrimOp dflags [res] op [arg]
| nopOp op
= emitAssign (CmmLocal res) arg
| Just (mop,rep) <- narrowOp op
= emitAssign (CmmLocal res) $
CmmMachOp (mop rep (wordWidth dflags)) [CmmMachOp (mop (wordWidth dflags) rep) [arg]]
emitPrimOp dflags r@[res] op args
| Just prim <- callishOp op
= do emitPrimCall r prim args
| Just mop <- translateOp dflags op
= let stmt = mkAssign (CmmLocal res) (CmmMachOp mop args) in
emit stmt
emitPrimOp dflags results op args
= case callishPrimOpSupported dflags op of
Left op -> emit $ mkUnsafeCall (PrimTarget op) results args
Right gen -> gen results args
type GenericOp = [CmmFormal] -> [CmmActual] -> FCode ()
callishPrimOpSupported :: DynFlags -> PrimOp -> Either CallishMachOp GenericOp
callishPrimOpSupported dflags op
= case op of
IntQuotRemOp | ncg && x86ish -> Left (MO_S_QuotRem (wordWidth dflags))
| otherwise -> Right (genericIntQuotRemOp dflags)
WordQuotRemOp | ncg && x86ish -> Left (MO_U_QuotRem (wordWidth dflags))
| otherwise -> Right (genericWordQuotRemOp dflags)
WordQuotRem2Op | ncg && x86ish -> Left (MO_U_QuotRem2 (wordWidth dflags))
| otherwise -> Right (genericWordQuotRem2Op dflags)
WordAdd2Op | ncg && x86ish -> Left (MO_Add2 (wordWidth dflags))
| otherwise -> Right genericWordAdd2Op
WordMul2Op | ncg && x86ish -> Left (MO_U_Mul2 (wordWidth dflags))
| otherwise -> Right genericWordMul2Op
_ -> pprPanic "emitPrimOp: can't translate PrimOp " (ppr op)
where
ncg = case hscTarget dflags of
HscAsm -> True
_ -> False
x86ish = case platformArch (targetPlatform dflags) of
ArchX86 -> True
ArchX86_64 -> True
_ -> False
genericIntQuotRemOp :: DynFlags -> GenericOp
genericIntQuotRemOp dflags [res_q, res_r] [arg_x, arg_y]
= emit $ mkAssign (CmmLocal res_q)
(CmmMachOp (MO_S_Quot (wordWidth dflags)) [arg_x, arg_y]) <*>
mkAssign (CmmLocal res_r)
(CmmMachOp (MO_S_Rem (wordWidth dflags)) [arg_x, arg_y])
genericIntQuotRemOp _ _ _ = panic "genericIntQuotRemOp"
genericWordQuotRemOp :: DynFlags -> GenericOp
genericWordQuotRemOp dflags [res_q, res_r] [arg_x, arg_y]
= emit $ mkAssign (CmmLocal res_q)
(CmmMachOp (MO_U_Quot (wordWidth dflags)) [arg_x, arg_y]) <*>
mkAssign (CmmLocal res_r)
(CmmMachOp (MO_U_Rem (wordWidth dflags)) [arg_x, arg_y])
genericWordQuotRemOp _ _ _ = panic "genericWordQuotRemOp"
genericWordQuotRem2Op :: DynFlags -> GenericOp
genericWordQuotRem2Op dflags [res_q, res_r] [arg_x_high, arg_x_low, arg_y]
= emit =<< f (widthInBits (wordWidth dflags)) zero arg_x_high arg_x_low
where ty = cmmExprType dflags arg_x_high
shl x i = CmmMachOp (MO_Shl (wordWidth dflags)) [x, i]
shr x i = CmmMachOp (MO_U_Shr (wordWidth dflags)) [x, i]
or x y = CmmMachOp (MO_Or (wordWidth dflags)) [x, y]
ge x y = CmmMachOp (MO_U_Ge (wordWidth dflags)) [x, y]
ne x y = CmmMachOp (MO_Ne (wordWidth dflags)) [x, y]
minus x y = CmmMachOp (MO_Sub (wordWidth dflags)) [x, y]
times x y = CmmMachOp (MO_Mul (wordWidth dflags)) [x, y]
zero = lit 0
one = lit 1
negone = lit (fromIntegral (widthInBits (wordWidth dflags)) - 1)
lit i = CmmLit (CmmInt i (wordWidth dflags))
f :: Int -> CmmExpr -> CmmExpr -> CmmExpr -> FCode CmmAGraph
f 0 acc high _ = return (mkAssign (CmmLocal res_q) acc <*>
mkAssign (CmmLocal res_r) high)
f i acc high low =
do roverflowedBit <- newTemp ty
rhigh' <- newTemp ty
rhigh'' <- newTemp ty
rlow' <- newTemp ty
risge <- newTemp ty
racc' <- newTemp ty
let high' = CmmReg (CmmLocal rhigh')
isge = CmmReg (CmmLocal risge)
overflowedBit = CmmReg (CmmLocal roverflowedBit)
let this = catAGraphs
[mkAssign (CmmLocal roverflowedBit)
(shr high negone),
mkAssign (CmmLocal rhigh')
(or (shl high one) (shr low negone)),
mkAssign (CmmLocal rlow')
(shl low one),
mkAssign (CmmLocal risge)
(or (overflowedBit `ne` zero)
(high' `ge` arg_y)),
mkAssign (CmmLocal rhigh'')
(high' `minus` (arg_y `times` isge)),
mkAssign (CmmLocal racc')
(or (shl acc one) isge)]
rest <- f (i - 1) (CmmReg (CmmLocal racc'))
(CmmReg (CmmLocal rhigh''))
(CmmReg (CmmLocal rlow'))
return (this <*> rest)
genericWordQuotRem2Op _ _ _ = panic "genericWordQuotRem2Op"
genericWordAdd2Op :: GenericOp
genericWordAdd2Op [res_h, res_l] [arg_x, arg_y]
= do dflags <- getDynFlags
r1 <- newTemp (cmmExprType dflags arg_x)
r2 <- newTemp (cmmExprType dflags arg_x)
let topHalf x = CmmMachOp (MO_U_Shr (wordWidth dflags)) [x, hww]
toTopHalf x = CmmMachOp (MO_Shl (wordWidth dflags)) [x, hww]
bottomHalf x = CmmMachOp (MO_And (wordWidth dflags)) [x, hwm]
add x y = CmmMachOp (MO_Add (wordWidth dflags)) [x, y]
or x y = CmmMachOp (MO_Or (wordWidth dflags)) [x, y]
hww = CmmLit (CmmInt (fromIntegral (widthInBits (halfWordWidth dflags)))
(wordWidth dflags))
hwm = CmmLit (CmmInt (halfWordMask dflags) (wordWidth dflags))
emit $ catAGraphs
[mkAssign (CmmLocal r1)
(add (bottomHalf arg_x) (bottomHalf arg_y)),
mkAssign (CmmLocal r2)
(add (topHalf (CmmReg (CmmLocal r1)))
(add (topHalf arg_x) (topHalf arg_y))),
mkAssign (CmmLocal res_h)
(topHalf (CmmReg (CmmLocal r2))),
mkAssign (CmmLocal res_l)
(or (toTopHalf (CmmReg (CmmLocal r2)))
(bottomHalf (CmmReg (CmmLocal r1))))]
genericWordAdd2Op _ _ = panic "genericWordAdd2Op"
genericWordMul2Op :: GenericOp
genericWordMul2Op [res_h, res_l] [arg_x, arg_y]
= do dflags <- getDynFlags
let t = cmmExprType dflags arg_x
xlyl <- liftM CmmLocal $ newTemp t
xlyh <- liftM CmmLocal $ newTemp t
xhyl <- liftM CmmLocal $ newTemp t
r <- liftM CmmLocal $ newTemp t
-- This generic implementation is very simple and slow. We might
-- well be able to do better, but for now this at least works.
let topHalf x = CmmMachOp (MO_U_Shr (wordWidth dflags)) [x, hww]
toTopHalf x = CmmMachOp (MO_Shl (wordWidth dflags)) [x, hww]
bottomHalf x = CmmMachOp (MO_And (wordWidth dflags)) [x, hwm]
add x y = CmmMachOp (MO_Add (wordWidth dflags)) [x, y]
sum = foldl1 add
mul x y = CmmMachOp (MO_Mul (wordWidth dflags)) [x, y]
or x y = CmmMachOp (MO_Or (wordWidth dflags)) [x, y]
hww = CmmLit (CmmInt (fromIntegral (widthInBits (halfWordWidth dflags)))
(wordWidth dflags))
hwm = CmmLit (CmmInt (halfWordMask dflags) (wordWidth dflags))
emit $ catAGraphs
[mkAssign xlyl
(mul (bottomHalf arg_x) (bottomHalf arg_y)),
mkAssign xlyh
(mul (bottomHalf arg_x) (topHalf arg_y)),
mkAssign xhyl
(mul (topHalf arg_x) (bottomHalf arg_y)),
mkAssign r
(sum [topHalf (CmmReg xlyl),
bottomHalf (CmmReg xhyl),
bottomHalf (CmmReg xlyh)]),
mkAssign (CmmLocal res_l)
(or (bottomHalf (CmmReg xlyl))
(toTopHalf (CmmReg r))),
mkAssign (CmmLocal res_h)
(sum [mul (topHalf arg_x) (topHalf arg_y),
topHalf (CmmReg xhyl),
topHalf (CmmReg xlyh),
topHalf (CmmReg r)])]
genericWordMul2Op _ _ = panic "genericWordMul2Op"
-- These PrimOps are NOPs in Cmm
nopOp :: PrimOp -> Bool
nopOp Int2WordOp = True
nopOp Word2IntOp = True
nopOp Int2AddrOp = True
nopOp Addr2IntOp = True
nopOp ChrOp = True -- Int# and Char# are rep'd the same
nopOp OrdOp = True
nopOp _ = False
-- These PrimOps turn into double casts
narrowOp :: PrimOp -> Maybe (Width -> Width -> MachOp, Width)
narrowOp Narrow8IntOp = Just (MO_SS_Conv, W8)
narrowOp Narrow16IntOp = Just (MO_SS_Conv, W16)
narrowOp Narrow32IntOp = Just (MO_SS_Conv, W32)
narrowOp Narrow8WordOp = Just (MO_UU_Conv, W8)
narrowOp Narrow16WordOp = Just (MO_UU_Conv, W16)
narrowOp Narrow32WordOp = Just (MO_UU_Conv, W32)
narrowOp _ = Nothing
-- Native word signless ops
translateOp :: DynFlags -> PrimOp -> Maybe MachOp
translateOp dflags IntAddOp = Just (mo_wordAdd dflags)
translateOp dflags IntSubOp = Just (mo_wordSub dflags)
translateOp dflags WordAddOp = Just (mo_wordAdd dflags)
translateOp dflags WordSubOp = Just (mo_wordSub dflags)
translateOp dflags AddrAddOp = Just (mo_wordAdd dflags)
translateOp dflags AddrSubOp = Just (mo_wordSub dflags)
translateOp dflags IntEqOp = Just (mo_wordEq dflags)
translateOp dflags IntNeOp = Just (mo_wordNe dflags)
translateOp dflags WordEqOp = Just (mo_wordEq dflags)
translateOp dflags WordNeOp = Just (mo_wordNe dflags)
translateOp dflags AddrEqOp = Just (mo_wordEq dflags)
translateOp dflags AddrNeOp = Just (mo_wordNe dflags)
translateOp dflags AndOp = Just (mo_wordAnd dflags)
translateOp dflags OrOp = Just (mo_wordOr dflags)
translateOp dflags XorOp = Just (mo_wordXor dflags)
translateOp dflags NotOp = Just (mo_wordNot dflags)
translateOp dflags SllOp = Just (mo_wordShl dflags)
translateOp dflags SrlOp = Just (mo_wordUShr dflags)
translateOp dflags AddrRemOp = Just (mo_wordURem dflags)
-- Native word signed ops
translateOp dflags IntMulOp = Just (mo_wordMul dflags)
translateOp dflags IntMulMayOfloOp = Just (MO_S_MulMayOflo (wordWidth dflags))
translateOp dflags IntQuotOp = Just (mo_wordSQuot dflags)
translateOp dflags IntRemOp = Just (mo_wordSRem dflags)
translateOp dflags IntNegOp = Just (mo_wordSNeg dflags)
translateOp dflags IntGeOp = Just (mo_wordSGe dflags)
translateOp dflags IntLeOp = Just (mo_wordSLe dflags)
translateOp dflags IntGtOp = Just (mo_wordSGt dflags)
translateOp dflags IntLtOp = Just (mo_wordSLt dflags)
translateOp dflags AndIOp = Just (mo_wordAnd dflags)
translateOp dflags OrIOp = Just (mo_wordOr dflags)
translateOp dflags XorIOp = Just (mo_wordXor dflags)
translateOp dflags NotIOp = Just (mo_wordNot dflags)
translateOp dflags ISllOp = Just (mo_wordShl dflags)
translateOp dflags ISraOp = Just (mo_wordSShr dflags)
translateOp dflags ISrlOp = Just (mo_wordUShr dflags)
-- Native word unsigned ops
translateOp dflags WordGeOp = Just (mo_wordUGe dflags)
translateOp dflags WordLeOp = Just (mo_wordULe dflags)
translateOp dflags WordGtOp = Just (mo_wordUGt dflags)
translateOp dflags WordLtOp = Just (mo_wordULt dflags)
translateOp dflags WordMulOp = Just (mo_wordMul dflags)
translateOp dflags WordQuotOp = Just (mo_wordUQuot dflags)
translateOp dflags WordRemOp = Just (mo_wordURem dflags)
translateOp dflags AddrGeOp = Just (mo_wordUGe dflags)
translateOp dflags AddrLeOp = Just (mo_wordULe dflags)
translateOp dflags AddrGtOp = Just (mo_wordUGt dflags)
translateOp dflags AddrLtOp = Just (mo_wordULt dflags)
-- Char# ops
translateOp dflags CharEqOp = Just (MO_Eq (wordWidth dflags))
translateOp dflags CharNeOp = Just (MO_Ne (wordWidth dflags))
translateOp dflags CharGeOp = Just (MO_U_Ge (wordWidth dflags))
translateOp dflags CharLeOp = Just (MO_U_Le (wordWidth dflags))
translateOp dflags CharGtOp = Just (MO_U_Gt (wordWidth dflags))
translateOp dflags CharLtOp = Just (MO_U_Lt (wordWidth dflags))
-- Double ops
translateOp _ DoubleEqOp = Just (MO_F_Eq W64)
translateOp _ DoubleNeOp = Just (MO_F_Ne W64)
translateOp _ DoubleGeOp = Just (MO_F_Ge W64)
translateOp _ DoubleLeOp = Just (MO_F_Le W64)
translateOp _ DoubleGtOp = Just (MO_F_Gt W64)
translateOp _ DoubleLtOp = Just (MO_F_Lt W64)
translateOp _ DoubleAddOp = Just (MO_F_Add W64)
translateOp _ DoubleSubOp = Just (MO_F_Sub W64)
translateOp _ DoubleMulOp = Just (MO_F_Mul W64)
translateOp _ DoubleDivOp = Just (MO_F_Quot W64)
translateOp _ DoubleNegOp = Just (MO_F_Neg W64)
-- Float ops
translateOp _ FloatEqOp = Just (MO_F_Eq W32)
translateOp _ FloatNeOp = Just (MO_F_Ne W32)
translateOp _ FloatGeOp = Just (MO_F_Ge W32)
translateOp _ FloatLeOp = Just (MO_F_Le W32)
translateOp _ FloatGtOp = Just (MO_F_Gt W32)
translateOp _ FloatLtOp = Just (MO_F_Lt W32)
translateOp _ FloatAddOp = Just (MO_F_Add W32)
translateOp _ FloatSubOp = Just (MO_F_Sub W32)
translateOp _ FloatMulOp = Just (MO_F_Mul W32)
translateOp _ FloatDivOp = Just (MO_F_Quot W32)
translateOp _ FloatNegOp = Just (MO_F_Neg W32)
-- Vector ops
translateOp _ (VecAddOp FloatVec n w) = Just (MO_VF_Add n w)
translateOp _ (VecSubOp FloatVec n w) = Just (MO_VF_Sub n w)
translateOp _ (VecMulOp FloatVec n w) = Just (MO_VF_Mul n w)
translateOp _ (VecDivOp FloatVec n w) = Just (MO_VF_Quot n w)
translateOp _ (VecNegOp FloatVec n w) = Just (MO_VF_Neg n w)
translateOp _ (VecAddOp IntVec n w) = Just (MO_V_Add n w)
translateOp _ (VecSubOp IntVec n w) = Just (MO_V_Sub n w)
translateOp _ (VecMulOp IntVec n w) = Just (MO_V_Mul n w)
translateOp _ (VecQuotOp IntVec n w) = Just (MO_VS_Quot n w)
translateOp _ (VecRemOp IntVec n w) = Just (MO_VS_Rem n w)
translateOp _ (VecNegOp IntVec n w) = Just (MO_VS_Neg n w)
translateOp _ (VecAddOp WordVec n w) = Just (MO_V_Add n w)
translateOp _ (VecSubOp WordVec n w) = Just (MO_V_Sub n w)
translateOp _ (VecMulOp WordVec n w) = Just (MO_V_Mul n w)
translateOp _ (VecQuotOp WordVec n w) = Just (MO_VU_Quot n w)
translateOp _ (VecRemOp WordVec n w) = Just (MO_VU_Rem n w)
-- Conversions
translateOp dflags Int2DoubleOp = Just (MO_SF_Conv (wordWidth dflags) W64)