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
  
// This file is part of Pike. For copyright information see COPYRIGHT. 
// Pike is distributed under GPL, LGPL and MPL. See the file COPYING 
// for more information. 
 
NOP : 
POP_N_ELEMS (0) : 
POP_N_ELEMS POP_VALUE : POP_N_ELEMS ($1a + 1) 
POP_VALUE POP_N_ELEMS : POP_N_ELEMS ($2a + 1) 
POP_VALUE POP_VALUE POP_VALUE : POP_N_ELEMS (3) 
POP_N_ELEMS POP_N_ELEMS : POP_N_ELEMS ($1a + $2a) 
POP_N_ELEMS(1) : POP_VALUE 
POP_VALUE POP_TO_MARK : POP_TO_MARK 
POP_N_ELEMS POP_TO_MARK : POP_TO_MARK 
 
MARK MARK: MARK2 
MARK POP_MARK: 
MARK2 POP_MARK: MARK 
MARK POP_TO_MARK: 
MARK2 POP_TO_MARK: MARK 
MARK_X POP_TO_MARK: POP_N_ELEMS($1a) 
 
SWAP SWAP: 
DUP POP_VALUE: 
DUP POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
// The opcode list is clearer without this. 
//SYNCH_MARK POP_SYNCH_MARK: 
 
ASSIGN_GLOBAL POP_VALUE : ASSIGN_GLOBAL_AND_POP($1a) 
ASSIGN_LOCAL  POP_VALUE : ASSIGN_LOCAL_AND_POP($1a) 
RECUR POP_VALUE : RECUR_AND_POP($1a) 
 
// Negation and complement of constants. 
NUMBER(0) : CONST0 
NUMBER(1) : CONST1 
NUMBER(-1) : CONST_1 
NEG_NUMBER(1) : CONST_1 
NUMBER (0x7fffffff) : BIGNUM 
CONST0 NEGATE : CONST0 
CONST1 NEGATE : CONST_1 
CONST_1 NEGATE : CONST1 
NUMBER NEGATE : NEG_NUMBER($1a) 
NEG_NUMBER NEGATE : NUMBER ($1a) 
NUMBER [ $1a < 0 && !INT32_NEG_OVERFLOW($1a) ] : NEG_NUMBER (-$1a) 
NEG_NUMBER [ $1a <= 0 && !INT32_NEG_OVERFLOW($1a) ] : NUMBER (-$1a) 
NEGATE NEGATE : 
CONST0 COMPL: CONST_1 
CONST1 COMPL: NEG_NUMBER(2) 
CONST_1 COMPL: CONST0 
BIGNUM COMPL: NUMBER(-0x80000000)       // Note: Invalid as NEG_NUMBER on 32bit! 
COMPL COMPL : 
NEGATE CONST_1 ADD_INTS : COMPL 
NEGATE ADD_NEG_INT(1) : COMPL 
NEGATE CONST1 SUBTRACT : COMPL 
CONST1 ADD_INTS NEGATE : COMPL 
ADD_INT(1) NEGATE : COMPL 
CONST_1 SUBTRACT NEGATE : COMPL 
COMPL CONST1 ADD_INTS : NEGATE 
COMPL ADD_INT(1) : NEGATE 
COMPL CONST_1 SUBTRACT : NEGATE 
CONST_1 ADD_INTS COMPL : NEGATE 
ADD_NEG_INT(1) COMPL : NEGATE 
CONST1 SUBTRACT COMPL : NEGATE 
 
LOCAL_2_LOCAL [$1a == $1b] : 
GLOBAL ASSIGN_GLOBAL_AND_POP($1a) : 
 
// Generated by for( int i=0; i<local; i++ ) where i is not used in 
// the loop. 
ASSIGN_LOCAL_NUMBER_AND_POP LOCAL($1a) : ASSIGN_LOCAL_NUMBER_AND_POP($1a,$1b) NUMBER($1b) 
ASSIGN_GLOBAL_NUMBER_AND_POP GLOBAL($1a) : ASSIGN_GLOBAL_NUMBER_AND_POP($1a,$1b) NUMBER($1b) 
NUMBER COMPL: NUMBER(~$1a) 
NEG_NUMBER COMPL: NEG_NUMBER(~$1a) 
ASSIGN_LOCAL_NUMBER_AND_POP LOCAL_LVALUE LOCAL($1a) : ASSIGN_LOCAL_NUMBER_AND_POP($1a,$1b) LOCAL_LVALUE($2a) NUMBER($1b) 
ASSIGN_GLOBAL_NUMBER_AND_POP GLOBAL_LVALUE GLOBAL($1a) : ASSIGN_GLOBAL_NUMBER_AND_POP($1a,$1b) GLOBAL_LVALUE($2a) NUMBER($1b) 
ASSIGN_LOCAL_NUMBER_AND_POP GLOBAL_LVALUE LOCAL($1a) : ASSIGN_LOCAL_NUMBER_AND_POP($1a,$1b) GLOBAL_LVALUE($2a) NUMBER($1b) 
 
// Ok, this is ridiculously specific, but it is generated by for(..) 
// when the variable is not used, like above, but for globals: 
ASSIGN_GLOBAL_NUMBER_AND_POP[!INT32_SUB_OVERFLOW($1b, 1)] GLOBAL_LVALUE($1a) DEC: ASSIGN_GLOBAL_NUMBER_AND_POP($1a, $1b - 1) NUMBER($1b - 1) 
 
ASSIGN_GLOBAL_NUMBER_AND_POP[!INT32_ADD_OVERFLOW($1b, 1)] GLOBAL_LVALUE($1a) INC: ASSIGN_GLOBAL_NUMBER_AND_POP($1a, $1b + 1) NUMBER($1b + 1) 
 
ASSIGN_GLOBAL_NUMBER_AND_POP[!INT32_SUB_OVERFLOW($1b, 1)] GLOBAL_LVALUE($1a) DEC_AND_POP: ASSIGN_GLOBAL_NUMBER_AND_POP($1a, $1b - 1) 
ASSIGN_GLOBAL_NUMBER_AND_POP[!INT32_ADD_OVERFLOW($1b, 1)] GLOBAL_LVALUE($1a) INC_AND_POP: ASSIGN_GLOBAL_NUMBER_AND_POP($1a, $1b + 1) 
 
LOCAL_LVALUE LOCAL ADD_TO_AND_POP : ADD_LOCALS_AND_POP($1a,$2a) 
LOCAL_LVALUE NUMBER ADD_TO_AND_POP: ADD_LOCAL_INT_AND_POP($1a,$2a) 
LOCAL_LVALUE CONST_1 ADD_TO_AND_POP: ADD_LOCAL_INT_AND_POP($1a,-1) 
LOCAL_LVALUE CONST1 ADD_TO_AND_POP: ADD_LOCAL_INT_AND_POP($1a,1) 
LOCAL_LVALUE CONST0 ADD_TO_AND_POP: 
 
LOCAL_LVALUE LTOSVAL ADD_INT ASSIGN: ADD_LOCAL_INT($1a,$3a) 
LOCAL_LVALUE LTOSVAL ADD_NEG_INT [ !INT32_NEG_OVERFLOW($3a) ] ASSIGN: ADD_LOCAL_INT($1a,-$3a) 
 
NUMBER  ASSIGN_LOCAL_AND_POP : ASSIGN_LOCAL_NUMBER_AND_POP($2a,$1a) 
NEG_NUMBER ASSIGN_LOCAL_AND_POP [ !INT32_NEG_OVERFLOW($1a) ] : ASSIGN_LOCAL_NUMBER_AND_POP($2a,-$1a) 
CONST0  ASSIGN_LOCAL_AND_POP : CLEAR_LOCAL($2a) 
CONST1  ASSIGN_LOCAL_AND_POP : ASSIGN_LOCAL_NUMBER_AND_POP($2a,1) 
CONST_1 ASSIGN_LOCAL_AND_POP : ASSIGN_LOCAL_NUMBER_AND_POP($2a,-1) 
 
NUMBER  ASSIGN_GLOBAL_AND_POP : ASSIGN_GLOBAL_NUMBER_AND_POP($2a,$1a) 
NEG_NUMBER ASSIGN_GLOBAL_AND_POP [ !INT32_NEG_OVERFLOW($1a) ] : ASSIGN_GLOBAL_NUMBER_AND_POP($2a,-$1a) 
CONST0  ASSIGN_GLOBAL_AND_POP : ASSIGN_GLOBAL_NUMBER_AND_POP($2a,0) 
CONST1  ASSIGN_GLOBAL_AND_POP : ASSIGN_GLOBAL_NUMBER_AND_POP($2a,1) 
CONST_1 ASSIGN_GLOBAL_AND_POP : ASSIGN_GLOBAL_NUMBER_AND_POP($2a,-1) 
 
// Propagate constants past assignments. 
NUMBER ASSIGN_LOCAL : ASSIGN_LOCAL_NUMBER_AND_POP($2a,$1a) NUMBER($1a) 
NEG_NUMBER ASSIGN_LOCAL [ !INT32_NEG_OVERFLOW($1a) ] : ASSIGN_LOCAL_NUMBER_AND_POP($2a,-$1a) NEG_NUMBER($1a) 
CONST0 ASSIGN_LOCAL : CLEAR_LOCAL($2a) CONST0 
CONST1 ASSIGN_LOCAL : ASSIGN_LOCAL_NUMBER_AND_POP($2a,1) CONST1 
CONST_1 ASSIGN_LOCAL : ASSIGN_LOCAL_NUMBER_AND_POP($2a,-1) CONST_1 
 
NUMBER ASSIGN_GLOBAL : ASSIGN_GLOBAL_NUMBER_AND_POP($2a,$1a) NUMBER($1a) 
NEG_NUMBER ASSIGN_GLOBAL [ !INT32_NEG_OVERFLOW($1a) ] : ASSIGN_GLOBAL_NUMBER_AND_POP($2a,-$1a) NEG_NUMBER($1a) 
CONST0 ASSIGN_GLOBAL : ASSIGN_GLOBAL_NUMBER_AND_POP($2a,0) CONST0 
CONST1 ASSIGN_GLOBAL : ASSIGN_GLOBAL_NUMBER_AND_POP($2a,1) CONST1 
CONST_1 ASSIGN_GLOBAL : ASSIGN_GLOBAL_NUMBER_AND_POP($2a,-1) CONST_1 
 
// Remove clearing of locals from the beginning of functions 
// But don't remove clearing of arguments! 
BYTE ENTRY START_FUNCTION LABEL(0) CLEAR_LOCAL [$1a <= $5a] : BYTE($1a) ENTRY START_FUNCTION LABEL(0) 
BYTE ENTRY START_FUNCTION LABEL(0) CLEAR_N_LOCAL [$1a <= $5a] : BYTE($1a) ENTRY START_FUNCTION LABEL(0) 
 
BYTE ENTRY START_FUNCTION CLEAR_LOCAL [$1a <= $4a] : BYTE($1a) ENTRY START_FUNCTION 
BYTE ENTRY START_FUNCTION CLEAR_N_LOCAL [$1a <= $4a] : BYTE($1a) ENTRY START_FUNCTION 
 
CLEAR_LOCAL CLEAR_LOCAL($1a) : CLEAR_LOCAL($1a) 
CLEAR_LOCAL CLEAR_LOCAL($1a+1) : CLEAR_N_LOCAL($1a,2) 
CLEAR_LOCAL CLEAR_LOCAL($1a-1) : CLEAR_N_LOCAL($2a,2) 
 
CLEAR_LOCAL CLEAR_N_LOCAL($1a+1)   : CLEAR_N_LOCAL($1a,$2b+1) 
CLEAR_N_LOCAL CLEAR_LOCAL($1a-1)   : CLEAR_N_LOCAL($1a-1, $1b+1) 
CLEAR_N_LOCAL CLEAR_LOCAL($1a+$1b) : CLEAR_N_LOCAL($1a,$1b+1) 
 
// Overlapping range and single: 
CLEAR_LOCAL CLEAR_N_LOCAL [$1a >= $2a] [$1a < $2a+$2b] : CLEAR_N_LOCAL($2a, $2b) 
CLEAR_N_LOCAL CLEAR_LOCAL [$1a <= $2a] [$2a < $1a+$1b] : CLEAR_N_LOCAL($1a, $1b) 
 
// Joining of ranges: 
CLEAR_N_LOCAL CLEAR_N_LOCAL [$1a <= $2a] [$1a + $1b >= $2a] : CLEAR_N_LOCAL($1a, MAXIMUM($1a + $1b, $2a + $2b) - $1a) 
CLEAR_N_LOCAL CLEAR_N_LOCAL [$2a <= $1a] [$2a + $2b >= $1a] : CLEAR_N_LOCAL($2a, MAXIMUM($1a + $1b, $2a + $2b) - $2a) 
 
// Attempt to de-interleave clearing of locals. 
CONST0 CLEAR_LOCAL : CLEAR_LOCAL($2a) CONST0 
CONST1 CLEAR_LOCAL : CLEAR_LOCAL($2a) CONST1 
CONST_1 CLEAR_LOCAL : CLEAR_LOCAL($2a) CONST_1 
NUMBER CLEAR_LOCAL : CLEAR_LOCAL($2a) NUMBER($1a) 
NEG_NUMBER CLEAR_LOCAL : CLEAR_LOCAL($2a) NEG_NUMBER($1a) 
CONSTANT CLEAR_LOCAL : CLEAR_LOCAL($2a) CONSTANT($1a) 
 
// FIXME: 
//   The following aren't sound as they need to account for 
//   frame->min_number_of_locals to not affect trampolines. 
//   The cleanest fix is probably to move trampolies to true objects. 
// CLEAR_LOCAL RETURN_0: RETURN_0 
// CLEAR_LOCAL_RETURN_1: RETURN_1 
// CLEAR_N_LOCAL RETURN_0: RETURN_0 
// CLEAR_N_LOCAL RETURN_1: RETURN_1 
 
// CONST_1 MULTIPLY : NEGATE 
// CONST0 MULTIPLY : POP_VALUE CONST0 
// CONST1 MULTIPLY : 
// NUMBER MULTIPLY [!($1a & ($1a - 1))]: NUMBER(my_log2($1a)) LSH 
 
// CONST_1 DIVIDE : NEGATE 
// CONST1 DIVIDE : 
// NUMBER DIVIDE [!($1a & ($1a - 1))]: NUMBER(my_log2($1a)) RSH 
 
CONST0 RETURN: RETURN_0 
CONST1 RETURN: RETURN_1 
CONST0 VOLATILE_RETURN: RETURN_0 
CONST1 VOLATILE_RETURN: RETURN_1 
INC POP_VALUE: INC_AND_POP 
POST_INC POP_VALUE: INC_AND_POP 
DEC POP_VALUE: DEC_AND_POP 
POST_DEC POP_VALUE: DEC_AND_POP 
NOT BRANCH_WHEN_NON_ZERO: BRANCH_WHEN_ZERO($2a) 
NOT BRANCH_WHEN_ZERO: BRANCH_WHEN_NON_ZERO($2a) 
 
POP_VALUE RETURN_0: RETURN_0 
POP_N_ELEMS RETURN_0: RETURN_0 
POP_VALUE RETURN_1: RETURN_1 
POP_N_ELEMS RETURN_1: RETURN_1 
 
// F_SYNCH_MARK and F_POP_SYNCH_MARK is output only with -d3 and 
// higher. We keep them solely for balancing the asm debug output. 
#define DeadCodeEndCond(op) \ 
  [op != F_LABEL && op != F_SYNCH_MARK && op != F_POP_SYNCH_MARK && op != F_ENTRY] 
BRANCH ? DeadCodeEndCond($2o) : BRANCH($1a) 
RETURN ? DeadCodeEndCond($2o) : RETURN 
VOLATILE_RETURN ? DeadCodeEndCond($2o) : VOLATILE_RETURN 
RETURN_0 ? DeadCodeEndCond($2o) : RETURN_0 
RETURN_1 ? DeadCodeEndCond($2o) : RETURN_1 
RETURN_LOCAL ? DeadCodeEndCond($2o) : RETURN_LOCAL($1a) 
 
// Get rid of extra catch-levels. 
// Note that the corresponding exit catch is killed 
// by dead code elimination. 
CATCH ESCAPE_CATCH: 
 
LEXICAL_LOCAL [!$1b] : LOCAL($1a) 
LEXICAL_LOCAL_LVALUE [!$1b] : LOCAL_LVALUE($1a) 
 
EXTERNAL [!$1b] : GLOBAL($1a) 
EXTERNAL_LVALUE [!$1b] : GLOBAL_LVALUE($1a) 
 
LOCAL_LVALUE INC : INC_LOCAL ($1a) 
LOCAL_LVALUE POST_INC : POST_INC_LOCAL ($1a) 
LOCAL_LVALUE INC_AND_POP : INC_LOCAL_AND_POP ($1a) 
INC_LOCAL POP_VALUE : INC_LOCAL_AND_POP ($1a) 
POST_INC_LOCAL POP_VALUE : INC_LOCAL_AND_POP ($1a) 
 
LOCAL_LVALUE DEC : DEC_LOCAL ($1a) 
LOCAL_LVALUE POST_DEC : POST_DEC_LOCAL ($1a) 
LOCAL_LVALUE DEC_AND_POP : DEC_LOCAL_AND_POP ($1a) 
DEC_LOCAL POP_VALUE : DEC_LOCAL_AND_POP ($1a) 
POST_DEC_LOCAL POP_VALUE : DEC_LOCAL_AND_POP ($1a) 
 
ASSIGN_GLOBAL_AND_POP GLOBAL_LVALUE($1a) INC_AND_POP : ADD_INT(1) ASSIGN_GLOBAL_AND_POP($1a) 
ASSIGN_GLOBAL_AND_POP GLOBAL_LVALUE($1a) DEC_AND_POP : ADD_NEG_INT(1) ASSIGN_GLOBAL_AND_POP($1a) 
GLOBAL_LVALUE INC_AND_POP GLOBAL($1a) : GLOBAL_LVALUE($1a) INC 
GLOBAL_LVALUE DEC_AND_POP GLOBAL($1a) : GLOBAL_LVALUE($1a) DEC 
 
ASSIGN_LOCAL RETURN [!(Pike_compiler->compiler_frame->lexical_scope & SCOPE_SCOPED)]: RETURN 
ASSIGN_LOCAL VOLATILE_RETURN [!(Pike_compiler->compiler_frame->lexical_scope & SCOPE_SCOPED)]: VOLATILE_RETURN 
 
ASSIGN_LOCAL BRANCH_WHEN_ZERO LOCAL($1a) RETURN LABEL($2a): ASSIGN_LOCAL($1a) RETURN_IF_TRUE LABEL($2a) 
ASSIGN_LOCAL BRANCH_WHEN_ZERO LOCAL($1a) VOLATILE_RETURN LABEL($2a): ASSIGN_LOCAL($1a) RETURN_IF_TRUE LABEL($2a) 
 
ASSIGN_LOCAL BRANCH_WHEN_ZERO LOCAL($1a) RETURN LABEL($2a) [!(Pike_compiler->compiler_frame->lexical_scope & SCOPE_SCOPED)] : RETURN_IF_TRUE ASSIGN_LOCAL($1a) LABEL($2a) 
ASSIGN_LOCAL BRANCH_WHEN_ZERO LOCAL($1a) VOLATILE_RETURN LABEL($2a) [!(Pike_compiler->compiler_frame->lexical_scope & SCOPE_SCOPED)] : RETURN_IF_TRUE ASSIGN_LOCAL($1a) LABEL($2a) 
 
ASSIGN_GLOBAL BRANCH_WHEN_ZERO GLOBAL($1a) RETURN LABEL($2a): ASSIGN_GLOBAL($1a) RETURN_IF_TRUE LABEL($2a) 
ASSIGN_GLOBAL BRANCH_WHEN_ZERO GLOBAL($1a) VOLATILE_RETURN LABEL($2a): ASSIGN_GLOBAL($1a) RETURN_IF_TRUE LABEL($2a) 
 
CONST1 BRANCH_WHEN_ZERO: 
CONST0 BRANCH_WHEN_ZERO: BRANCH($2a) 
CONST1 BRANCH_WHEN_NON_ZERO: BRANCH($2a) 
CONST0 BRANCH_WHEN_NON_ZERO: 
NUMBER [$1a] BRANCH_WHEN_ZERO: 
NUMBER [$1a] BRANCH_WHEN_NON_ZERO: BRANCH($2a) 
 
EQ LOR: EQ_OR ($2a) 
EQ LAND: EQ_AND ($2a) 
 
EQ NOT: NE 
NE NOT: EQ 
 
// The following only work on total orders. We can't assume that. 
// 
// LT NOT: GE 
// GT NOT: LE 
// LE NOT: GT 
// GE NOT: LT 
 
LOCAL LOCAL : 2_LOCALS ($1a,$2a) 
MARK LOCAL : MARK_AND_LOCAL ($2a) 
MARK GLOBAL: MARK_AND_GLOBAL ($2a) 
MARK STRING : MARK_AND_STRING($2a) 
MARK EXTERNAL : MARK_AND_EXTERNAL($2a,$2b) 
MARK CONST0 : MARK_AND_CONST0 
MARK CONST1 : MARK_AND_CONST1 
LOCAL SIZEOF: SIZEOF_LOCAL ($1a) 
LOCAL SIZEOF_STRING: SIZEOF_LOCAL_STRING ($1a) 
MARK_AND_LOCAL SIZEOF: MARK SIZEOF_LOCAL ($1a) 
2_LOCALS SIZEOF: LOCAL($1a) SIZEOF_LOCAL ($1b) 
STRING INDEX: STRING_INDEX ($1a) 
INDEX SWITCH: SWITCH_ON_INDEX($2a) 
LOCAL SWITCH: SWITCH_ON_LOCAL($1a,$2a) 
2_LOCALS SWITCH: LOCAL($1a) SWITCH_ON_LOCAL($1b,$2a) 
 
STRING CLEAR_STRING_SUBTYPE: STRING ($1a) 
CONST0 CLEAR_STRING_SUBTYPE: CONST0 
CONST1 CLEAR_STRING_SUBTYPE: CONST1 
CONST_1 CLEAR_STRING_SUBTYPE: CONST_1 
NUMBER CLEAR_STRING_SUBTYPE: NUMBER($1a) 
NEG_NUMBER CLEAR_STRING_SUBTYPE: NEG_NUMBER($1a) 
ARROW_STRING CLEAR_STRING_SUBTYPE: STRING($1a) 
 
LOCAL INDEX: LOCAL_INDEX ($1a) 
LOCAL CLEAR_STRING_SUBTYPE INDEX: LOCAL_INDEX ($1a) 
MARK_AND_LOCAL INDEX: MARK LOCAL_INDEX ($1a) 
MARK_AND_LOCAL CLEAR_STRING_SUBTYPE INDEX: MARK LOCAL_INDEX ($1a) 
2_LOCALS INDEX: LOCAL_LOCAL_INDEX($1b,$1a) 
2_LOCALS CLEAR_STRING_SUBTYPE INDEX: LOCAL_LOCAL_INDEX($1b,$1a) 
 
2_LOCALS [$1a == $1b]: LOCAL($1a) DUP 
GLOBAL GLOBAL($1a): GLOBAL($1a) DUP 
 
CONST0 INDEX: POS_INT_INDEX (0) 
CONST_1 INDEX: NEG_INT_INDEX (1) 
CONST1 INDEX: POS_INT_INDEX (1) 
NUMBER INDEX: POS_INT_INDEX ($1a) 
NEG_NUMBER INDEX: NEG_INT_INDEX ($1a) 
POS_INT_INDEX [$1a < 0 && !INT32_NEG_OVERFLOW($1a) ]: NEG_INT_INDEX (-$1a) 
NEG_INT_INDEX [$1a <= 0 && !INT32_NEG_OVERFLOW($1a) ]: POS_INT_INDEX (-$1a) 
 
BRANCH_WHEN_ZERO BRANCH LABEL ($1a): BRANCH_WHEN_NON_ZERO($2a) LABEL($1a) 
BRANCH_WHEN_NON_ZERO BRANCH LABEL ($1a): BRANCH_WHEN_ZERO($2a) LABEL($1a) 
 
BRANCH_WHEN_EQ BRANCH LABEL ($1a) : BRANCH_WHEN_NE($2a) LABEL($1a) 
BRANCH_WHEN_NE BRANCH LABEL ($1a) : BRANCH_WHEN_EQ($2a) LABEL($1a) 
 
// The following only work on total orders. We can't assume that. 
// 
// BRANCH_WHEN_LT BRANCH LABEL ($1a) : BRANCH_WHEN_GE($2a) LABEL($1a) 
// BRANCH_WHEN_GE BRANCH LABEL ($1a) : BRANCH_WHEN_LT($2a) LABEL($1a) 
// 
// BRANCH_WHEN_LE BRANCH LABEL ($1a) : BRANCH_WHEN_GT($2a) LABEL($1a) 
// BRANCH_WHEN_GT BRANCH LABEL ($1a) : BRANCH_WHEN_LE($2a) LABEL($1a) 
 
 
CONST0 ADD_INTS: ADD_INT (0) 
CONST1 ADD_INTS: ADD_INT (1) 
CONST_1 ADD_INTS: ADD_NEG_INT (1) 
NUMBER [$1a >= 0] ADD_INTS : ADD_INT ($1a) 
NEG_NUMBER [$1a > 0] ADD_INTS : ADD_NEG_INT ($1a) 
ADD_INT [$1a < 0 && !INT32_NEG_OVERFLOW($1a)]: ADD_NEG_INT(-$1a) 
ADD_NEG_INT [$1a < 0 && !INT32_NEG_OVERFLOW($1a)]: ADD_INT(-$1a) 
 
#define OPER_INT(X,Y)         \ 
    X MOD      : MOD_INT(Y); \ 
    X LSH      : LSH_INT(Y); \ 
    X RSH      : RSH_INT(Y); \ 
    X SUBTRACT : SUBTRACT_INT(Y); \ 
    X ADD      : ADD_INT(Y); \ 
    X AND      : AND_INT(Y); \ 
    X OR       : OR_INT(Y);  \ 
    X XOR      : XOR_INT(Y); \ 
    X DIVIDE   : DIVIDE_INT(Y);\ 
    X MULTIPLY : MULTIPLY_INT(Y); 
 
OPER_INT(NUMBER,$1a) 
OPER_INT(NEG_NUMBER [!INT32_NEG_OVERFLOW($1a)], -$1a) 
OPER_INT(CONST1,1) 
OPER_INT(CONST_1,-1) 
OPER_INT(BIGNUM,0x7fffffff) 
OPER_INT(CONST0, 0) 
 
MOD_INT(0) : "Division by constant 0." 
DIVIDE_INT(0) : "Division by constant 0." 
 
// Some noops related to the above opcodes. 
// MOD_INT(1): POP_VALUE CONST0         // cf string % int ==> string 
LSH_INT(0): 
RSH_INT(0): 
SUBTRACT_INT(0): 
// ADD_INT(0):                          // cf string + int ==> string 
AND_INT(0): POP_VALUE CONST0 
AND_INT(-1): 
OR_INT(0): 
OR_INT(-1): POP_VALUE CONST_1 
XOR_INT(0): 
XOR_INT(-1): COMPL 
// DIVIDE_INT(1):                       // cf string / int ==> array(string) 
DIVIDE_INT(-1): NEGATE 
// MULTIPLY_INT(0): POP_VALUE CONST0    // cf string * int ==> string 
MULTIPLY_INT(1): 
MULTIPLY_INT(-1): NEGATE 
 
// this should be automatically const optimized, right? 
// ADD_INTS ADD_INTS: ADD_INTS ($1a+$2a) 
 
 
// This set of optimizations is broken. Consider the case: 
// STRING ADD_INT ADD_INT 
// 
// ADD_INT ADD_INT: ADD_INTS ($1a+$2a) 
// ADD_NEG_INT ADD_NEG_INT: ADD_NEG_INT ($1a+$2a) 
// ADD_NEG_INT ADD_INT [$1a <= $2a]: ADD_INT ($2a-$1a) 
// ADD_NEG_INT ADD_INT [$1a > $2a]: ADD_NEG_INT ($1a-$2a) 
// ADD_INT ADD_NEG_INT [$2a <= $1a]: ADD_INT ($1a-$2a) 
// ADD_INT ADD_NEG_INT [$2a > $1a]: ADD_NEG_INT ($2a-$1a) 
 
// FIXME: What about LTOSVAL_AND_FREE variants of the following three rules? 
 
LTOSVAL2_AND_FREE ADD ASSIGN : ADD_TO 
LTOSVAL ADD ASSIGN : ADD_TO 
 
LTOSVAL2_AND_FREE ADD_INTS ASSIGN : ADD_TO 
LTOSVAL ADD_INTS ASSIGN : ADD_TO 
 
LTOSVAL2_AND_FREE ADD_FLOATS ASSIGN : ADD_TO 
LTOSVAL ADD_FLOATS ASSIGN : ADD_TO 
 
LOCAL CONST1 ADD_TO : INC_LOCAL($1a) 
LOCAL CONST_1 ADD_TO : DEC_LOCAL($1a) 
 
ADD_TO POP_VALUE : ADD_TO_AND_POP 
ASSIGN POP_VALUE : ASSIGN_AND_POP 
 
LOCAL CONST1 ADD_TO_AND_POP : INC_LOCAL_AND_POP($1a) 
LOCAL CONST_1 ADD_TO_AND_POP : DEC_LOCAL_AND_POP($1a) 
 
#ifdef EAT_STACK 
APPLY ASSIGN_LOCAL_AND_POP : APPLY_ASSIGN_LOCAL_AND_POP($1a,$2a) 
#endif 
ASSIGN_LOCAL_AND_POP INC_LOCAL($1a) : ADD_INT(1) ASSIGN_LOCAL($1a) 
ASSIGN_LOCAL_AND_POP DEC_LOCAL($1a) : ADD_NEG_INT(1) ASSIGN_LOCAL($1a) 
 
LOCAL RETURN : RETURN_LOCAL($1a) 
LOCAL VOLATILE_RETURN : RETURN_LOCAL($1a) 
 
NUMBER ADD_INT [ !INT32_ADD_OVERFLOW($1a, $2a) ] : NUMBER($1a+$2a) 
NUMBER ADD_NEG_INT [ !INT32_SUB_OVERFLOW($1a, $2a) ]: NUMBER($1a-$2a) 
NEG_NUMBER ADD_INT [ !INT32_SUB_OVERFLOW($2a, $1a) ]: NUMBER($2a-$1a) 
NEG_NUMBER ADD_NEG_INT [ !INT32_NEG_OVERFLOW($1a) && !INT32_SUB_OVERFLOW(-$1a, $2a) ]: NUMBER(-$1a-$2a) 
 
CONST0 ADD_INT : NUMBER($2a) 
CONST0 ADD_NEG_INT : NEG_NUMBER($2a) 
CONST1 ADD_INT [ !INT32_ADD_OVERFLOW($2a, 1) ] : NUMBER($2a+1) 
CONST1 ADD_NEG_INT [ !INT32_SUB_OVERFLOW($2a, 1) ] : NEG_NUMBER($2a-1) 
CONST_1 ADD_INT [ !INT32_SUB_OVERFLOW($2a, 1) ] : NUMBER($2a-1) 
CONST_1 ADD_NEG_INT [ !INT32_ADD_OVERFLOW($2a, 1) && ($2a+1) > 0] : NEG_NUMBER($2a+1) 
CONST0 LOCAL ADD_INTS : LOCAL($2a) 
CONST0 LOCAL NEGATE ADD_INTS : LOCAL($2a) NEGATE 
CONST0 GLOBAL ADD_INTS : GLOBAL($2a) 
CONST0 GLOBAL NEGATE ADD_INTS : GLOBAL($2a) NEGATE 
 
LOCAL ADD_INT LOCAL($1a) : LOCAL($1a) DUP ADD_INT($2a) SWAP 
GLOBAL ADD_INT GLOBAL($1a) : GLOBAL($1a) DUP ADD_INT($2a) SWAP 
LOCAL ADD_NEG_INT LOCAL($1a) : LOCAL($1a) DUP ADD_NEG_INT($2a) SWAP 
GLOBAL ADD_NEG_INT GLOBAL($1a) : GLOBAL($1a) DUP ADD_NEG_INT($2a) SWAP 
 
LOCAL BRANCH_WHEN_NON_ZERO : BRANCH_IF_LOCAL($1a) POINTER($2a) 
LOCAL BRANCH_WHEN_ZERO : BRANCH_IF_NOT_LOCAL($1a) POINTER($2a) 
 
// quick_branch_when[_non]_zero _knows_ that the 
// value on the stack is an integer. 
GT BRANCH_WHEN_ZERO : GT QUICK_BRANCH_WHEN_ZERO($2a) 
GE BRANCH_WHEN_ZERO : GE QUICK_BRANCH_WHEN_ZERO($2a) 
LT BRANCH_WHEN_ZERO : LT QUICK_BRANCH_WHEN_ZERO($2a) 
LE BRANCH_WHEN_ZERO : LE QUICK_BRANCH_WHEN_ZERO($2a) 
NE BRANCH_WHEN_ZERO : NE QUICK_BRANCH_WHEN_ZERO($2a) 
EQ BRANCH_WHEN_ZERO : EQ QUICK_BRANCH_WHEN_ZERO($2a) 
 
SIZEOF BRANCH_WHEN_ZERO : SIZEOF($1a) QUICK_BRANCH_WHEN_ZERO($2a) 
SIZEOF_LOCAL BRANCH_WHEN_ZERO : SIZEOF_LOCAL($1a) QUICK_BRANCH_WHEN_ZERO($2a) 
 
GT BRANCH_WHEN_NON_ZERO : GT QUICK_BRANCH_WHEN_NON_ZERO($2a) 
GE BRANCH_WHEN_NON_ZERO : GE QUICK_BRANCH_WHEN_NON_ZERO($2a) 
LT BRANCH_WHEN_NON_ZERO : LT QUICK_BRANCH_WHEN_NON_ZERO($2a) 
LE BRANCH_WHEN_NON_ZERO : LE QUICK_BRANCH_WHEN_NON_ZERO($2a) 
NE BRANCH_WHEN_NON_ZERO : NE QUICK_BRANCH_WHEN_NON_ZERO($2a) 
EQ BRANCH_WHEN_NON_ZERO : EQ QUICK_BRANCH_WHEN_NON_ZERO($2a) 
 
SIZEOF BRANCH_WHEN_NON_ZERO : SIZEOF($1a) QUICK_BRANCH_WHEN_NON_ZERO($2a) 
SIZEOF_LOCAL BRANCH_WHEN_NON_ZERO : SIZEOF_LOCAL($1a) QUICK_BRANCH_WHEN_NON_ZERO($2a) 
 
// It is not really necessary to set up a frame for these cases. 
// Deluxe version: Also avoid the argument/local clearing, asm-level 
// register pushing etc. 
// 
// These are functions returning a constant, and doing nothing else. 
MARK_AT(0) POP_TO_MARK INIT_FRAME RETURN_0 : RETURN_0 
MARK_AT(0) POP_TO_MARK INIT_FRAME UNDEFINED RETURN : UNDEFINED RETURN 
MARK_AT(0) POP_TO_MARK INIT_FRAME RETURN_1 : RETURN_1 
MARK_AT(0) POP_TO_MARK INIT_FRAME NUMBER RETURN : NUMBER($4a) RETURN 
MARK_AT(0) POP_TO_MARK INIT_FRAME STRING RETURN : STRING($4a) RETURN 
MARK_AT(0) POP_TO_MARK INIT_FRAME CONSTANT RETURN : CONSTANT($4a) RETURN 
MARK_AT(0) POP_TO_MARK INIT_FRAME NEG_NUMBER RETURN : NEG_NUMBER($4a) RETURN 
 
// Branches that jump to the next instruction 
// Basic branches 
BRANCH LABEL($1a) : LABEL($1a) 
BRANCH_WHEN_ZERO LABEL($1a) : POP_VALUE LABEL($1a) 
BRANCH_WHEN_NON_ZERO LABEL($1a) : POP_VALUE LABEL($1a) 
BRANCH_WHEN_EQ LABEL($1a) : POP_VALUE POP_VALUE LABEL($1a) 
BRANCH_WHEN_NE LABEL($1a) : POP_VALUE POP_VALUE LABEL($1a) 
BRANCH_WHEN_LT LABEL($1a) : POP_VALUE POP_VALUE LABEL($1a) 
BRANCH_WHEN_LE LABEL($1a) : POP_VALUE POP_VALUE LABEL($1a) 
BRANCH_WHEN_GT LABEL($1a) : POP_VALUE POP_VALUE LABEL($1a) 
BRANCH_WHEN_GE LABEL($1a) : POP_VALUE POP_VALUE LABEL($1a) 
// These variants use a POINTER 
BRANCH_IF_NOT_LOCAL_ARROW POINTER LABEL ($2a) : LABEL($2a) 
BRANCH_IF_LOCAL POINTER LABEL($2a) : LABEL($2a) 
BRANCH_IF_NOT_LOCAL POINTER LABEL($2a) : LABEL($2a) 
 
#define OPT_INCDEC(X) \ 
X##_LOCAL_AND_POP LOCAL ($1a) : X##_LOCAL ($1a) ; \ 
X##_LOCAL_AND_POP LOCAL LOCAL ($1a) : LOCAL($2a) X##_LOCAL ($1a) ; \ 
X##_LOCAL_AND_POP GLOBAL LOCAL ($1a) : GLOBAL($2a) X##_LOCAL ($1a) ; 
 
OPT_INCDEC(INC) 
OPT_INCDEC(DEC) 
 
CLEAR_LOCAL LOCAL($1a) : CLEAR_LOCAL($1a) CONST0 
#ifdef EAT_STACK 
APPLY_ASSIGN_LOCAL_AND_POP LOCAL ($1b) : APPLY_ASSIGN_LOCAL($1a,$1b) 
#endif 
 
DEC_LOCAL_AND_POP MARK_AND_LOCAL ($1a) : DEC_LOCAL ($1a) MARK_X(1) 
INC_LOCAL_AND_POP MARK_AND_LOCAL ($1a) : INC_LOCAL ($1a) MARK_X(1) 
ASSIGN_GLOBAL_AND_POP MARK GLOBAL($1a) : ASSIGN_GLOBAL($1a) MARK_X(1) 
ASSIGN_LOCAL_AND_POP MARK_AND_LOCAL($1a) : ASSIGN_LOCAL($1a) MARK_X(1) 
ASSIGN_LOCAL_AND_POP NUMBER LOCAL($1a) : ASSIGN_LOCAL($1a) NUMBER($2a) SWAP 
ASSIGN_LOCAL_AND_POP STRING LOCAL($1a) : ASSIGN_LOCAL($1a) STRING($2a) SWAP 
ASSIGN_LOCAL_AND_POP MARK_AND_STRING LOCAL($1a) : ASSIGN_LOCAL($1a) STRING($2a) SWAP MARK_X(2) 
 
#ifdef EAT_STACK 
APPLY_ASSIGN_LOCAL_AND_POP MARK_AND_LOCAL ($1b) : APPLY_ASSIGN_LOCAL($1a,$1b) MARK_X(1) 
#endif 
 
ASSIGN_LOCAL ASSIGN_LOCAL($1a) : ASSIGN_LOCAL($1a) 
 
#if 0 
// The following set of rules attempt to push the mark toward the apply. 
// The idea is to push it the entire way, to be able to have an apply 
// opcode that contains the stack depth, and thus doesn't need the mark 
// stack. 
 
// MARK rules 
MARK LOCAL : LOCAL($2a) MARK_X(1) 
MARK STRING : STRING($2a) MARK_X(1) 
MARK NUMBER : NUMBER($2a) MARK_X(1) 
MARK CONST0 : CONST0 MARK_X(1) 
MARK CONST1 : CONST1 MARK_X(1) 
MARK CONST_1 : CONST_1 MARK_X(1) 
MARK NEG_NUMBER : NEG_NUMBER($2a) MARK_X(1) 
MARK GLOBAL : GLOBAL($2a) MARK_X(1) 
MARK MARK_APPLY : MARK_APPLY($2a) MARK_X(1) 
MARK CONSTANT : CONSTANT($2a) MARK_X(1) 
//MARK FLOAT : FLOAT($2a) MARK_X(1) 
MARK LFUN : LFUN($2a) MARK_X(1) 
MARK LTOSVAL : LTOSVAL MARK_X(1) 
MARK LOCAL_LVALUE : LOCAL_LVALUE($2a) MARK_X(2) 
MARK 2_LOCALS : 2_LOCALS($2a,$2b) MARK_X(2) 
MARK NEGATE : NEGATE MARK 
 
// MARK_X rules 
MARK_X(0) : MARK 
MARK_X LOCAL : LOCAL($2a) MARK_X($1a+1) 
MARK_X STRING : STRING($2a) MARK_X($1a+1) 
MARK_X NUMBER : NUMBER($2a) MARK_X($1a+1) 
MARK_X CONST0 : CONST0 MARK_X($1a+1) 
MARK_X CONST1 : CONST1 MARK_X($1a+1) 
MARK_X CONST_1 : CONST_1 MARK_X($1a+1) 
MARK_X NEG_NUMBER : NEG_NUMBER($2a) MARK_X($1a+1) 
MARK_X GLOBAL : GLOBAL($2a) MARK_X($1a+1) 
MARK_X MARK_APPLY : MARK_APPLY($2a) MARK_X($1a+1) 
MARK_X CONSTANT : CONSTANT($2a) MARK_X($1a+1) 
//MARK_X FLOAT : FLOAT($2a) MARK_X($1a+1) 
MARK_X LFUN : LFUN($2a) MARK_X($1a+1) 
MARK_X LTOSVAL : LTOSVAL MARK_X($1a+1) 
MARK_X LOCAL_LVALUE : LOCAL_LVALUE($2a) MARK_X($1a+2) 
MARK_X 2_LOCALS : 2_LOCALS($2a,$2b) MARK_X($1a+2) 
MARK_X NEGATE : NEGATE MARK_X($1a) 
 
#else /* !0 */ 
 
// MARK_X rules 
MARK_X(0) : MARK 
LOCAL MARK_X [$2a>0] : MARK_X($2a-1) LOCAL($1a) 
STRING MARK_X [$2a>0] : MARK_X($2a-1) STRING($1a) 
NUMBER MARK_X [$2a>0] : MARK_X($2a-1) NUMBER($1a) 
CONST0 MARK_X [$2a>0] : MARK_X($2a-1) CONST0 
CONST1 MARK_X [$2a>0] : MARK_X($2a-1) CONST1 
CONST_1 MARK_X [$2a>0] : MARK_X($2a-1) CONST_1 
NEG_NUMBER MARK_X [$2a>0] : MARK_X($2a-1) NEG_NUMBER($1a) 
GLOBAL MARK_X [$2a>0] : MARK_X($2a-1) GLOBAL($1a) 
MARK_APPLY MARK_X [$2a>0] : MARK_X($2a-1) MARK_APPLY($1a) 
CONSTANT MARK_X [$2a>0] : MARK_X($2a-1) CONSTANT($1a) 
//FLOAT MARK_X [$2a>0] : MARK_X($2a-1) FLOAT($1a) 
LFUN MARK_X [$2a>0] : MARK_X($2a-1) LFUN($1a) 
LTOSVAL MARK_X [$2a>0] : MARK_X($2a-1) LTOSVAL 
LOCAL_LVALUE MARK_X [$2a>1] : MARK_X($2a-2) LOCAL_LVALUE($1a) 
2_LOCALS MARK_X [$2a>0] : LOCAL($1a) MARK_X($2a-1) LOCAL($1b) 
SWAP MARK_X : MARK_X($2a) SWAP 
DUP MARK_X [$2a>0] : MARK_X($2a-1) DUP 
 
CONST_1 ASSIGN_LOCAL MARK_X [$3a>0] : MARK_X($3a-1) CONST_1 ASSIGN_LOCAL($2a) 
CONST1 ASSIGN_LOCAL MARK_X [$3a>0] : MARK_X($3a-1) CONST1 ASSIGN_LOCAL($2a) 
NUMBER ASSIGN_LOCAL MARK_X [$3a>0] : MARK_X($3a-1) NUMBER($1a) ASSIGN_LOCAL($2a) 
NEG_NUMBER ASSIGN_LOCAL MARK_X [$3a>0] : MARK_X($3a-1) NEG_NUMBER($1a) ASSIGN_LOCAL($2a) 
 
#endif /* 0 */ 
 
MARK_X [$1a>0] POP_VALUE : POP_VALUE MARK_X($1a-1) 
MARK_X POP_N_ELEMS [$1a >= $2a] : POP_N_ELEMS($2a) MARK_X($1a-$2a) 
 
#define BasicBranch2(Branch,Oper,Pre,Post,Variable) \ 
 Variable Branch Pre Variable ($1a) : Variable ($1a) Oper ($2a) Post ; \ 
 ASSIGN_##Variable Branch Pre Variable ($1a) : ASSIGN_##Variable($1a) Oper ($2a) Post ; 
 
#define BasicBranch1(Branch,Oper,Pre,Post) \ 
  BasicBranch2(Branch,Oper,Pre,Post,LOCAL) \ 
  BasicBranch2(Branch,Oper,Pre,Post,GLOBAL) 
 
#define BasicBranch0(Branch,Oper) \ 
  BasicBranch1(Branch,Oper,MARK,MARK_X(1)) \ 
  BasicBranch1(Branch,Oper, , ) 
 
BasicBranch0(BRANCH_WHEN_NON_ZERO, BRANCH_AND_POP_WHEN_NON_ZERO) 
BasicBranch0(BRANCH_WHEN_ZERO, BRANCH_AND_POP_WHEN_ZERO) 
 
#define SimpleBranch(Sequence,X) \ 
 Sequence BRANCH_WHEN_ZERO Sequence : Sequence BRANCH_AND_POP_WHEN_ZERO ( X ) ; \ 
 Sequence BRANCH_WHEN_ZERO MARK Sequence : Sequence BRANCH_AND_POP_WHEN_ZERO ( X ) MARK_X(1) ; 
 
SimpleBranch( LOCAL_ARROW($1a, $1b), $2a ) 
SimpleBranch( LOCAL_ARROW($1a, $1b) ARROW($2a), $3a ) 
SimpleBranch( LOCAL_ARROW($1a, $1b) ARROW($2a) ARROW($3a), $4a ) 
SimpleBranch( LOCAL_ARROW($1a, $1b) ARROW($2a) ARROW($3a) ARROW($4a), $5a ) 
SimpleBranch( GLOBAL_LOCAL_INDEX($1a, $1b) , $2a ) 
SimpleBranch( LOCAL_LOCAL_INDEX($1a, $1b) , $2a ) 
 
SimpleBranch( GLOBAL($1a) ARROW ($2a), $3a ) 
 
LOCAL ASSIGN_LOCAL_AND_POP : LOCAL_2_LOCAL($2a,$1a) 
GLOBAL ASSIGN_LOCAL_AND_POP : GLOBAL_2_LOCAL($1a,$2a) 
LOCAL ASSIGN_GLOBAL_AND_POP : LOCAL_2_GLOBAL($2a,$1a) 
 
ASSIGN_PRIVATE_GLOBAL_AND_POP PRIVATE_GLOBAL($1a) : ASSIGN_PRIVATE_GLOBAL($1a) 
ASSIGN_PRIVATE_TYPED_GLOBAL_AND_POP PRIVATE_TYPED_GLOBAL($1a) : ASSIGN_PRIVATE_TYPED_GLOBAL($1a,$1b) 
ASSIGN_GLOBAL_AND_POP GLOBAL($1a) : ASSIGN_GLOBAL($1a) 
ASSIGN_LOCAL_AND_POP LOCAL($1a) : ASSIGN_LOCAL($1a) 
 
LOCAL ARROW : LOCAL_ARROW($2a,$1a) 
LOCAL_ARROW BRANCH_WHEN_ZERO: BRANCH_IF_NOT_LOCAL_ARROW($1a,$1b) POINTER($2a) 
 
GLOBAL LOCAL_INDEX : GLOBAL_LOCAL_INDEX($1a,$2a) 
 
SIZEOF CONST1 BRANCH_WHEN_LT : SIZEOF BRANCH_WHEN_ZERO ($3a) 
SIZEOF_LOCAL CONST1 BRANCH_WHEN_LT : SIZEOF_LOCAL($1a) BRANCH_WHEN_ZERO ($3a) 
SIZEOF CONST0 BRANCH_WHEN_LE : SIZEOF BRANCH_WHEN_ZERO ($3a) 
SIZEOF_LOCAL CONST0 BRANCH_WHEN_LE : SIZEOF_LOCAL($1a) BRANCH_WHEN_ZERO ($3a) 
 
CLEAR_LOCAL DEC_LOCAL_AND_POP($1a) : CONST_1 ASSIGN_LOCAL_AND_POP($1a) 
CLEAR_LOCAL INC_LOCAL_AND_POP($1a) : CONST1 ASSIGN_LOCAL_AND_POP($1a) 
 
// Popping of side-effect free values. 
NUMBER POP_VALUE : 
NUMBER64 POP_VALUE : 
NEG_NUMBER POP_VALUE: 
STRING POP_VALUE : 
//FLOAT POP_VALUE : 
CONSTANT POP_VALUE : 
LOCAL POP_VALUE : 
LEXICAL_LOCAL POP_VALUE : 
GLOBAL POP_VALUE: 
PRIVATE_GLOBAL POP_VALUE : 
PRIVATE_TYPED_GLOBAL POP_VALUE : 
2_LOCALS POP_VALUE: LOCAL($1a) 
LFUN POP_VALUE: 
TRAMPOLINE POP_VALUE : 
CONST0 POP_VALUE: 
CONST1 POP_VALUE: 
CONST_1 POP_VALUE: 
BIGNUM POP_VALUE: 
MOD_INT POP_VALUE: POP_VALUE 
LSH_INT POP_VALUE: POP_VALUE 
RSH_INT POP_VALUE: POP_VALUE 
SUBTRACT_INT POP_VALUE: POP_VALUE 
ADD_INT POP_VALUE: POP_VALUE 
AND_INT POP_VALUE: POP_VALUE 
OR_INT POP_VALUE: POP_VALUE 
XOR_INT POP_VALUE: POP_VALUE 
DIVIDE_INT POP_VALUE: POP_VALUE 
MULTIPLY_INT POP_VALUE: POP_VALUE 
NEGATE POP_VALUE: POP_VALUE 
COMPL POP_VALUE: POP_VALUE 
NOT POP_VALUE: POP_VALUE 
SIZEOF POP_VALUE: POP_VALUE 
MARK_AND_CONST0 POP_VALUE: MARK 
MARK_AND_CONST1 POP_VALUE: MARK 
MARK_AND_STRING POP_VALUE: MARK 
MARK_AND_GLOBAL POP_VALUE: MARK 
MARK_AND_EXTERNAL POP_VALUE: MARK 
MARK_AND_LOCAL POP_VALUE: MARK 
 
NUMBER POP_TO_MARK : POP_TO_MARK 
NUMBER64 POP_TO_MARK : POP_TO_MARK 
NEG_NUMBER POP_TO_MARK: POP_TO_MARK 
STRING POP_TO_MARK : POP_TO_MARK 
//FLOAT POP_TO_MARK : POP_TO_MARK 
CONSTANT POP_TO_MARK : POP_TO_MARK 
LOCAL POP_TO_MARK : POP_TO_MARK 
LEXICAL_LOCAL POP_TO_MARK : POP_TO_MARK 
GLOBAL POP_TO_MARK: POP_TO_MARK 
PRIVATE_GLOBAL POP_TO_MARK : POP_TO_MARK 
PRIVATE_TYPED_GLOBAL POP_TO_MARK : POP_TO_MARK 
2_LOCALS POP_TO_MARK: POP_TO_MARK 
LFUN POP_TO_MARK: POP_TO_MARK 
TRAMPOLINE POP_TO_MARK : POP_TO_MARK 
CONST0 POP_TO_MARK: POP_TO_MARK 
CONST1 POP_TO_MARK: POP_TO_MARK 
CONST_1 POP_TO_MARK: POP_TO_MARK 
BIGNUM POP_TO_MARK: POP_TO_MARK 
MOD_INT POP_TO_MARK: POP_TO_MARK 
LSH_INT POP_TO_MARK: POP_TO_MARK 
RSH_INT POP_TO_MARK: POP_TO_MARK 
SUBTRACT_INT POP_TO_MARK: POP_TO_MARK 
ADD_INT POP_TO_MARK: POP_TO_MARK 
AND_INT POP_TO_MARK: POP_TO_MARK 
OR_INT POP_TO_MARK: POP_TO_MARK 
XOR_INT POP_TO_MARK: POP_TO_MARK 
DIVIDE_INT POP_TO_MARK: POP_TO_MARK 
MULTIPLY_INT POP_TO_MARK: POP_TO_MARK 
NEGATE POP_TO_MARK: POP_TO_MARK 
COMPL POP_TO_MARK: POP_TO_MARK 
NOT POP_TO_MARK: POP_TO_MARK 
SIZEOF POP_TO_MARK: POP_TO_MARK 
PUSH_ARRAY POP_TO_MARK: POP_TO_MARK 
MARK_AND_CONST0 POP_TO_MARK: 
MARK_AND_CONST1 POP_TO_MARK: 
MARK_AND_STRING POP_TO_MARK: 
MARK_AND_GLOBAL POP_TO_MARK: 
MARK_AND_EXTERNAL POP_TO_MARK: 
MARK_AND_LOCAL POP_TO_MARK: 
 
NUMBER POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
NUMBER64 POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
NEG_NUMBER POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
STRING POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
//FLOAT POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
CONSTANT POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
LOCAL POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
GLOBAL POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
PRIVATE_GLOBAL POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
PRIVATE_TYPED_GLOBAL POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
2_LOCALS POP_N_ELEMS [$2a > 0]: LOCAL($1a) POP_N_ELEMS($2a-1) 
TRAMPOLINE POP_N_ELEMS [$2a > 0]: LOCAL($1a) POP_N_ELEMS($2a-1) 
CONST0 POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
CONST1 POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
CONST_1 POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
BIGNUM POP_N_ELEMS [$2a > 0]: POP_N_ELEMS($2a-1) 
MOD_INT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
LSH_INT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
RSH_INT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
SUBTRACT_INT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
ADD_INT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
ADD_NEG_INT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
AND_INT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
OR_INT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
XOR_INT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
DIVIDE_INT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
MULTIPLY_INT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
NEGATE POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
COMPL POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
NOT POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
SIZEOF POP_N_ELEMS[$2a > 0]: POP_N_ELEMS($2a) 
 
RECUR RETURN [check_tailrecursion()] : TAIL_RECUR ($1a) 
 
// This doesn't really work 
// MARK TAIL_RECUR : BRANCH ($2a) 
// These optimizations are now handled in optimize_eq 
// CONST0 BRANCH_WHEN_EQ: BRANCH_WHEN_ZERO($2a) 
// CONST0 BRANCH_WHEN_NE: BRANCH_WHEN_NON_ZERO($2a) 
// 
// This one is not safe. 
// CONST0 EQ: NOT 
 
// These are known to always return integers. 
ZERO_TYPE BRANCH_WHEN_ZERO: ZERO_TYPE QUICK_BRANCH_WHEN_ZERO($2a) 
ZERO_TYPE BRANCH_WHEN_NON_ZERO: ZERO_TYPE QUICK_BRANCH_WHEN_NON_ZERO($2a) 
 
UNDEFINEDP BRANCH_WHEN_ZERO: UNDEFINEDP QUICK_BRANCH_WHEN_ZERO($2a) 
UNDEFINEDP BRANCH_WHEN_NON_ZERO: UNDEFINEDP QUICK_BRANCH_WHEN_NON_ZERO($2a) 
 
DESTRUCTEDP BRANCH_WHEN_ZERO: UNDEFINEDP QUICK_BRANCH_WHEN_ZERO($2a) 
DESTRUCTEDP BRANCH_WHEN_NON_ZERO: UNDEFINEDP QUICK_BRANCH_WHEN_NON_ZERO($2a) 
 
BRANCH_WHEN_EQ: EQ QUICK_BRANCH_WHEN_NON_ZERO($1a) 
BRANCH_WHEN_NE: EQ QUICK_BRANCH_WHEN_ZERO($1a) 
BRANCH_WHEN_LT: LT QUICK_BRANCH_WHEN_NON_ZERO($1a) 
BRANCH_WHEN_GT: GT QUICK_BRANCH_WHEN_NON_ZERO($1a) 
BRANCH_WHEN_LE: LE QUICK_BRANCH_WHEN_NON_ZERO($1a) 
BRANCH_WHEN_GE: GE QUICK_BRANCH_WHEN_NON_ZERO($1a) 
 
ASSIGN_LOCAL BRANCH_WHEN_ZERO 2_LOCALS(,$1a) BRANCH_WHEN_EQ : ASSIGN_LOCAL($1a) BRANCH_AND_POP_WHEN_ZERO($2a) LOCAL($3a) BRANCH_WHEN_EQ($4a) 
ASSIGN_LOCAL BRANCH_WHEN_ZERO 2_LOCALS(,$1a) BRANCH_WHEN_NE : ASSIGN_LOCAL($1a) BRANCH_AND_POP_WHEN_ZERO($2a) LOCAL($3a) BRANCH_WHEN_NE($4a) 
 
/* This will facilitate other optimizations I hope */ 
CLEAR_LOCAL MARK LOCAL [ $1a != $3a ] : MARK LOCAL($3a) CLEAR_LOCAL($1a) 
 
/* The result of this optimization could be reordered... */ 
CLEAR_LOCAL MARK LOCAL($1a) : MARK CLEAR_LOCAL($1a) CONST0 
 
 
#define LOW_MKCALLOPTS(A)                                       \ 
A POP_VALUE: A##_AND_POP($1a);                                  \ 
A [ check_tailrecursion() ] RETURN : A##_AND_RETURN($1a) ;      \ 
A##_AND_RETURN ? DeadCodeEndCond($2o) : A##_AND_RETURN($1a) ; 
 
#define MKCALLOPTS(A)                           \ 
MARK A: MARK_##A($2a) ;                         \ 
MARK_X A: A##_N($2a,$1a);                       \ 
LOW_MKCALLOPTS(A);                              \ 
A##_N[!$1b]:MARK_##A($1a);                      \ 
LOW_MKCALLOPTS(MARK_##A); 
 
 
MKCALLOPTS(APPLY) 
MKCALLOPTS(CALL_LFUN) 
MKCALLOPTS(CALL_BUILTIN) 
// MARK CALL_FUNCTION doesn't make any sense... 
LOW_MKCALLOPTS(CALL_FUNCTION) 
 
// MARK CALL_OTHER doesn't make any sense either... 
LOW_MKCALLOPTS(CALL_OTHER) 
 
CALL_BUILTIN1 POP_VALUE : CALL_BUILTIN1_AND_POP ($1a) 
 
LTOSVAL_CALL_BUILTIN_AND_ASSIGN POP_VALUE : LTOSVAL_CALL_BUILTIN_AND_ASSIGN_POP($1a) 
 
#define OPT_TYPEP(X,Y) \ 
 CALL_BUILTIN1 [ Pike_compiler->new_program->constants[$1a].sval.u.efun->function == X ] BRANCH_WHEN_ZERO : BRANCH_IF_TYPE_IS_NOT(Y) POINTER($2a); 
 
#if 1 
OPT_TYPEP(f_intp, T_INT) 
OPT_TYPEP(f_stringp, T_STRING) 
OPT_TYPEP(f_arrayp, T_ARRAY) 
OPT_TYPEP(f_floatp, T_FLOAT) 
OPT_TYPEP(f_mappingp, T_MAPPING) 
OPT_TYPEP(f_multisetp, T_MULTISET) 
#endif 
 
// Move lvalues up on the stack. 
#define MOVE_LVAL(L_G1, L_G2)   \ 
  NUMBER ASSIGN_##L_G1##_AND_POP L_G2##_LVALUE: L_G2##_LVALUE($3a) NUMBER($1a) ASSIGN_##L_G1##_AND_POP($2a); \ 
  NEG_NUMBER ASSIGN_##L_G1##_AND_POP L_G2##_LVALUE: L_G2##_LVALUE($3a) NEG_NUMBER($1a) ASSIGN_##L_G1##_AND_POP($2a); \ 
  CONST1 ASSIGN_##L_G1##_AND_POP L_G2##_LVALUE: L_G2##_LVALUE($3a) CONST1 ASSIGN_##L_G1##_AND_POP($2a); \ 
  CONST_1 ASSIGN_##L_G1##_AND_POP L_G2##_LVALUE: L_G2##_LVALUE($3a) CONST_1 ASSIGN_##L_G1##_AND_POP($2a); 
 
MOVE_LVAL(LOCAL,LOCAL) 
MOVE_LVAL(GLOBAL,LOCAL) 
MOVE_LVAL(LOCAL,GLOBAL) 
MOVE_LVAL(GLOBAL,GLOBAL) 
 
CLEAR_LOCAL LOCAL_LVALUE: LOCAL_LVALUE($2a) CLEAR_LOCAL($1a) 
CLEAR_LOCAL GLOBAL_LVALUE: GLOBAL_LVALUE($2a) CLEAR_LOCAL($1a) 
CONST0 ASSIGN_GLOBAL_AND_POP LOCAL_LVALUE: LOCAL_LVALUE($3a) CONST0 ASSIGN_GLOBAL_AND_POP($2a) 
CONST0 ASSIGN_GLOBAL_AND_POP GLOBAL_LVALUE: GLOBAL_LVALUE($3a) CONST0 ASSIGN_GLOBAL_AND_POP($2a) 
 
GLOBAL_LVALUE CONST0 ASSIGN_GLOBAL_AND_POP($1a) INC_AND_POP : CONST1 ASSIGN_GLOBAL_AND_POP($1a) 
GLOBAL_LVALUE CONST0 ASSIGN_GLOBAL_AND_POP($1a) DEC_AND_POP : CONST_1 ASSIGN_GLOBAL_AND_POP($1a) 
GLOBAL_LVALUE CONST_1 ASSIGN_GLOBAL_AND_POP($1a) INC_AND_POP : CONST0 ASSIGN_GLOBAL_AND_POP($1a) 
GLOBAL_LVALUE CONST1 ASSIGN_GLOBAL_AND_POP($1a) DEC_AND_POP : CONST0 ASSIGN_GLOBAL_AND_POP($1a) 
GLOBAL_LVALUE NUMBER ASSIGN_GLOBAL_AND_POP($1a) INC_AND_POP : NUMBER($2a) ADD_INT(1) ASSIGN_GLOBAL_AND_POP($1a) 
GLOBAL_LVALUE NUMBER ASSIGN_GLOBAL_AND_POP($1a) DEC_AND_POP : NUMBER($2a) ADD_NEG_INT(1) ASSIGN_GLOBAL_AND_POP($1a) 
GLOBAL_LVALUE NEG_NUMBER ASSIGN_GLOBAL_AND_POP($1a) INC_AND_POP : NEG_NUMBER($2a) ADD_INT(1) ASSIGN_GLOBAL_AND_POP($1a) 
GLOBAL_LVALUE NEG_NUMBER ASSIGN_GLOBAL_AND_POP($1a) DEC_AND_POP : NEG_NUMBER($2a) ADD_NEG_INT(1) ASSIGN_GLOBAL_AND_POP($1a) 
 
// Move marks to where they're relevant. 
MARK CLEAR_LOCAL: CLEAR_LOCAL($2a) MARK 
MARK ASSIGN_LOCAL_NUMBER_AND_POP: ASSIGN_LOCAL_NUMBER_AND_POP($2a,$2b) MARK 
MARK ASSIGN_GLOBAL_NUMBER_AND_POP: ASSIGN_GLOBAL_NUMBER_AND_POP($2a,$2b) MARK 
MARK NEG_NUMBER ASSIGN_LOCAL_AND_POP: NEG_NUMBER($2a) ASSIGN_LOCAL_AND_POP($3a) MARK 
MARK NEG_NUMBER ASSIGN_GLOBAL_AND_POP: NEG_NUMBER($2a) ASSIGN_GLOBAL_AND_POP($3a) MARK 
MARK_AND_CONST1 ASSIGN_LOCAL_AND_POP: ASSIGN_LOCAL_NUMBER_AND_POP($3a,1) MARK 
MARK_AND_CONST1 ASSIGN_GLOBAL_AND_POP: ASSIGN_GLOBAL_NUMBER_AND_POP($3a,1) MARK