Source

pypy / pypy / jit / metainterp / resoperation.py

  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
from pypy.rlib.objectmodel import we_are_translated
from pypy.rlib.debug import make_sure_not_resized

def ResOperation(opnum, args, result, descr=None):
    cls = opclasses[opnum]
    op = cls(result)
    op.initarglist(args)
    if descr is not None:
        assert isinstance(op, ResOpWithDescr)
        op.setdescr(descr)
    return op


class AbstractResOp(object):
    """The central ResOperation class, representing one operation."""

    # debug
    name = ""
    pc = 0

    def __init__(self, result):
        self.result = result

    # methods implemented by each concrete class
    # ------------------------------------------

    def getopnum(self):
        raise NotImplementedError

    # methods implemented by the arity mixins
    # ---------------------------------------

    def initarglist(self, args):
        "This is supposed to be called only just after the ResOp has been created"
        raise NotImplementedError

    def getarglist(self):
        raise NotImplementedError

    def getarg(self, i):
        raise NotImplementedError

    def setarg(self, i, box):
        raise NotImplementedError

    def numargs(self):
        raise NotImplementedError


    # methods implemented by GuardResOp
    # ---------------------------------

    def getfailargs(self):
        return None

    def setfailargs(self, fail_args):
        raise NotImplementedError

    # methods implemented by ResOpWithDescr
    # -------------------------------------

    def getdescr(self):
        return None

    def setdescr(self, descr):
        raise NotImplementedError

    # common methods
    # --------------

    def copy_and_change(self, opnum, args=None, result=None, descr=None):
        "shallow copy: the returned operation is meant to be used in place of self"
        if args is None:
            args = self.getarglist()
        if result is None:
            result = self.result
        if descr is None:
            descr = self.getdescr()
        newop = ResOperation(opnum, args, result, descr)
        return newop

    def clone(self):
        args = self.getarglist()
        descr = self.getdescr()
        if descr is not None:
            descr = descr.clone_if_mutable()
        op = ResOperation(self.getopnum(), args[:], self.result, descr)
        if not we_are_translated():
            op.name = self.name
            op.pc = self.pc
        return op

    def __repr__(self):
        return self.repr()

    def repr(self, graytext=False):
        # RPython-friendly version
        if self.result is not None:
            sres = '%s = ' % (self.result,)
        else:
            sres = ''
        if self.name:
            prefix = "%s:%s   " % (self.name, self.pc)
            if graytext:
                prefix = "\f%s\f" % prefix
        else:
            prefix = ""
        args = self.getarglist()
        descr = self.getdescr()
        if descr is None or we_are_translated():
            return '%s%s%s(%s)' % (prefix, sres, self.getopname(),
                                 ', '.join([str(a) for a in args]))
        else:
            return '%s%s%s(%s, descr=%r)' % (prefix, sres, self.getopname(),
                                             ', '.join([str(a) for a in args]), descr)

    def getopname(self):
        try:
            return opname[self.getopnum()].lower()
        except KeyError:
            return '<%d>' % self.getopnum()

    def is_guard(self):
        return rop._GUARD_FIRST <= self.getopnum() <= rop._GUARD_LAST

    def is_foldable_guard(self):
        return rop._GUARD_FOLDABLE_FIRST <= self.getopnum() <= rop._GUARD_FOLDABLE_LAST

    def is_guard_exception(self):
        return (self.getopnum() == rop.GUARD_EXCEPTION or
                self.getopnum() == rop.GUARD_NO_EXCEPTION)

    def is_guard_overflow(self):
        return (self.getopnum() == rop.GUARD_OVERFLOW or
                self.getopnum() == rop.GUARD_NO_OVERFLOW)

    def is_always_pure(self):
        return rop._ALWAYS_PURE_FIRST <= self.getopnum() <= rop._ALWAYS_PURE_LAST

    def has_no_side_effect(self):
        return rop._NOSIDEEFFECT_FIRST <= self.getopnum() <= rop._NOSIDEEFFECT_LAST

    def can_raise(self):
        return rop._CANRAISE_FIRST <= self.getopnum() <= rop._CANRAISE_LAST

    def is_malloc(self):
        # a slightly different meaning from can_malloc
        return rop._MALLOC_FIRST <= self.getopnum() <= rop._MALLOC_LAST

    def can_malloc(self):
        return self.is_call() or self.is_malloc()

    def is_call(self):
        return rop._CALL_FIRST <= self.getopnum() <= rop._CALL_LAST

    def is_ovf(self):
        return rop._OVF_FIRST <= self.getopnum() <= rop._OVF_LAST

    def is_comparison(self):
        return self.is_always_pure() and self.returns_bool_result()

    def is_final(self):
        return rop._FINAL_FIRST <= self.getopnum() <= rop._FINAL_LAST

    def returns_bool_result(self):
        opnum = self.getopnum()
        if we_are_translated():
            assert opnum >= 0
        elif opnum < 0:
            return False     # for tests
        return opboolresult[opnum]


# ===================
# Top of the hierachy
# ===================

class PlainResOp(AbstractResOp):
    pass

class ResOpWithDescr(AbstractResOp):

    _descr = None

    def getdescr(self):
        return self._descr

    def setdescr(self, descr):
        # for 'call', 'new', 'getfield_gc'...: the descr is a prebuilt
        # instance provided by the backend holding details about the type
        # of the operation.  It must inherit from AbstractDescr.  The
        # backend provides it with cpu.fielddescrof(), cpu.arraydescrof(),
        # cpu.calldescrof(), and cpu.typedescrof().
        self._check_descr(descr)
        self._descr = descr

    def _check_descr(self, descr):
        if not we_are_translated() and getattr(descr, 'I_am_a_descr', False):
            return # needed for the mock case in oparser_model
        from pypy.jit.metainterp.history import check_descr
        check_descr(descr)


class GuardResOp(ResOpWithDescr):

    _fail_args = None

    def getfailargs(self):
        return self._fail_args

    def setfailargs(self, fail_args):
        self._fail_args = fail_args

    def copy_and_change(self, opnum, args=None, result=None, descr=None):
        newop = AbstractResOp.copy_and_change(self, opnum, args, result, descr)
        newop.setfailargs(self.getfailargs())
        return newop

    def clone(self):
        newop = AbstractResOp.clone(self)
        newop.setfailargs(self.getfailargs())
        return newop


# ============
# arity mixins
# ============

class NullaryOp(object):
    _mixin_ = True

    def initarglist(self, args):
        assert len(args) == 0

    def getarglist(self):
        return []

    def numargs(self):
        return 0

    def getarg(self, i):
        raise IndexError

    def setarg(self, i, box):
        raise IndexError


class UnaryOp(object):
    _mixin_ = True
    _arg0 = None

    def initarglist(self, args):
        assert len(args) == 1
        self._arg0, = args

    def getarglist(self):
        return [self._arg0]

    def numargs(self):
        return 1

    def getarg(self, i):
        if i == 0:
            return self._arg0
        else:
            raise IndexError

    def setarg(self, i, box):
        if i == 0:
            self._arg0 = box
        else:
            raise IndexError


class BinaryOp(object):
    _mixin_ = True
    _arg0 = None
    _arg1 = None

    def initarglist(self, args):
        assert len(args) == 2
        self._arg0, self._arg1 = args

    def numargs(self):
        return 2

    def getarg(self, i):
        if i == 0:
            return self._arg0
        elif i == 1:
            return self._arg1
        else:
            raise IndexError

    def setarg(self, i, box):
        if i == 0:
            self._arg0 = box
        elif i == 1:
            self._arg1 = box
        else:
            raise IndexError

    def getarglist(self):
        return [self._arg0, self._arg1]


class TernaryOp(object):
    _mixin_ = True
    _arg0 = None
    _arg1 = None
    _arg2 = None

    def initarglist(self, args):
        assert len(args) == 3
        self._arg0, self._arg1, self._arg2 = args

    def getarglist(self):
        return [self._arg0, self._arg1, self._arg2]

    def numargs(self):
        return 3

    def getarg(self, i):
        if i == 0:
            return self._arg0
        elif i == 1:
            return self._arg1
        elif i == 2:
            return self._arg2
        else:
            raise IndexError

    def setarg(self, i, box):
        if i == 0:
            self._arg0 = box
        elif i == 1:
            self._arg1 = box
        elif i == 2:
            self._arg2 = box
        else:
            raise IndexError

class N_aryOp(object):
    _mixin_ = True
    _args = None

    def initarglist(self, args):
        self._args = args

    def getarglist(self):
        return self._args

    def numargs(self):
        return len(self._args)

    def getarg(self, i):
        return self._args[i]

    def setarg(self, i, box):
        self._args[i] = box


# ____________________________________________________________

_oplist = [
    '_FINAL_FIRST',
    'JUMP/*d',
    'FINISH/*d',
    '_FINAL_LAST',

    '_GUARD_FIRST',
    '_GUARD_FOLDABLE_FIRST',
    'GUARD_TRUE/1d',
    'GUARD_FALSE/1d',
    'GUARD_VALUE/2d',
    'GUARD_CLASS/2d',
    'GUARD_NONNULL/1d',
    'GUARD_ISNULL/1d',
    'GUARD_NONNULL_CLASS/2d',
    '_GUARD_FOLDABLE_LAST',
    'GUARD_NO_EXCEPTION/0d',
    'GUARD_EXCEPTION/1d',
    'GUARD_NO_OVERFLOW/0d',
    'GUARD_OVERFLOW/0d',
    'GUARD_NOT_FORCED/0d',
    'GUARD_NOT_INVALIDATED/0d',
    '_GUARD_LAST', # ----- end of guard operations -----

    '_NOSIDEEFFECT_FIRST', # ----- start of no_side_effect operations -----
    '_ALWAYS_PURE_FIRST', # ----- start of always_pure operations -----
    'INT_ADD/2',
    'INT_SUB/2',
    'INT_MUL/2',
    'INT_FLOORDIV/2',
    'UINT_FLOORDIV/2',
    'INT_MOD/2',
    'INT_AND/2',
    'INT_OR/2',
    'INT_XOR/2',
    'INT_RSHIFT/2',
    'INT_LSHIFT/2',
    'UINT_RSHIFT/2',
    'FLOAT_ADD/2',
    'FLOAT_SUB/2',
    'FLOAT_MUL/2',
    'FLOAT_TRUEDIV/2',
    'FLOAT_NEG/1',
    'FLOAT_ABS/1',
    'CAST_FLOAT_TO_INT/1',
    'CAST_INT_TO_FLOAT/1',
    #
    'INT_LT/2b',
    'INT_LE/2b',
    'INT_EQ/2b',
    'INT_NE/2b',
    'INT_GT/2b',
    'INT_GE/2b',
    'UINT_LT/2b',
    'UINT_LE/2b',
    'UINT_GT/2b',
    'UINT_GE/2b',
    'FLOAT_LT/2b',
    'FLOAT_LE/2b',
    'FLOAT_EQ/2b',
    'FLOAT_NE/2b',
    'FLOAT_GT/2b',
    'FLOAT_GE/2b',
    #
    'INT_IS_ZERO/1b',
    'INT_IS_TRUE/1b',
    'INT_NEG/1',
    'INT_INVERT/1',
    #
    'SAME_AS/1',      # gets a Const or a Box, turns it into another Box
    #
    'PTR_EQ/2b',
    'PTR_NE/2b',
    #
    'ARRAYLEN_GC/1d',
    'STRLEN/1',
    'STRGETITEM/2',
    'GETFIELD_GC_PURE/1d',
    'GETFIELD_RAW_PURE/1d',
    'GETARRAYITEM_GC_PURE/2d',
    'UNICODELEN/1',
    'UNICODEGETITEM/2',
    #
    # ootype operations
    #'INSTANCEOF/1db',
    #'SUBCLASSOF/2b',
    #
    '_ALWAYS_PURE_LAST',  # ----- end of always_pure operations -----

    'GETARRAYITEM_GC/2d',
    'GETARRAYITEM_RAW/2d',
    'GETFIELD_GC/1d',
    'GETFIELD_RAW/1d',
    '_MALLOC_FIRST',
    'NEW/0d',
    'NEW_WITH_VTABLE/1',
    'NEW_ARRAY/1d',
    'NEWSTR/1',
    'NEWUNICODE/1',
    '_MALLOC_LAST',
    'FORCE_TOKEN/0',
    'VIRTUAL_REF/2',         # removed before it's passed to the backend
    'READ_TIMESTAMP/0',
    '_NOSIDEEFFECT_LAST', # ----- end of no_side_effect operations -----

    'SETARRAYITEM_GC/3d',
    'SETARRAYITEM_RAW/3d',
    'SETFIELD_GC/2d',
    'SETFIELD_RAW/2d',
    'STRSETITEM/3',
    'UNICODESETITEM/3',
    #'RUNTIMENEW/1',     # ootype operation
    'COND_CALL_GC_WB/2d', # [objptr, newvalue] (for the write barrier)
    'COND_CALL_GC_WB_ARRAY/3d', # [objptr, arrayindex, newvalue] (write barr.)
    'DEBUG_MERGE_POINT/*',      # debugging only
    'JIT_DEBUG/*',              # debugging only
    'VIRTUAL_REF_FINISH/2',   # removed before it's passed to the backend
    'COPYSTRCONTENT/5',       # src, dst, srcstart, dststart, length
    'COPYUNICODECONTENT/5',
    'QUASIIMMUT_FIELD/1d',    # [objptr], descr=SlowMutateDescr

    '_CANRAISE_FIRST', # ----- start of can_raise operations -----
    '_CALL_FIRST',
    'CALL/*d',
    'CALL_ASSEMBLER/*d',  # call already compiled assembler
    'CALL_MAY_FORCE/*d',
    'CALL_LOOPINVARIANT/*d',
    'CALL_RELEASE_GIL/*d',  # release the GIL and "close the stack" for asmgcc
    #'OOSEND',                     # ootype operation
    #'OOSEND_PURE',                # ootype operation
    'CALL_PURE/*d',             # removed before it's passed to the backend
    '_CALL_LAST',
    '_CANRAISE_LAST', # ----- end of can_raise operations -----

    '_OVF_FIRST', # ----- start of is_ovf operations -----
    'INT_ADD_OVF/2',
    'INT_SUB_OVF/2',
    'INT_MUL_OVF/2',
    '_OVF_LAST', # ----- end of is_ovf operations -----
    '_LAST',     # for the backend to add more internal operations
]

# ____________________________________________________________

class rop(object):
    pass

opclasses = []   # mapping numbers to the concrete ResOp class
opname = {}      # mapping numbers to the original names, for debugging
oparity = []     # mapping numbers to the arity of the operation or -1
opwithdescr = [] # mapping numbers to a flag "takes a descr"
opboolresult= [] # mapping numbers to a flag "returns a boolean"


def setup(debug_print=False):
    for i, name in enumerate(_oplist):
        if debug_print:
            print '%30s = %d' % (name, i)
        if '/' in name:
            name, arity = name.split('/')
            withdescr = 'd' in arity
            boolresult = 'b' in arity
            arity = arity.rstrip('db')
            if arity == '*':
                arity = -1
            else:
                arity = int(arity)
        else:
            arity, withdescr, boolresult = -1, True, False       # default
        setattr(rop, name, i)
        if not name.startswith('_'):
            opname[i] = name
            cls = create_class_for_op(name, i, arity, withdescr)
        else:
            cls = None
        opclasses.append(cls)
        oparity.append(arity)
        opwithdescr.append(withdescr)
        opboolresult.append(boolresult)
    assert len(opclasses)==len(oparity)==len(opwithdescr)==len(opboolresult)==len(_oplist)

def get_base_class(mixin, base):
    try:
        return get_base_class.cache[(mixin, base)]
    except KeyError:
        arity_name = mixin.__name__[:-2]  # remove the trailing "Op"
        name = arity_name + base.__name__ # something like BinaryPlainResOp
        bases = (mixin, base)
        cls = type(name, bases, {})
        get_base_class.cache[(mixin, base)] = cls
        return cls
get_base_class.cache = {}

def create_class_for_op(name, opnum, arity, withdescr):
    arity2mixin = {
        0: NullaryOp,
        1: UnaryOp,
        2: BinaryOp,
        3: TernaryOp
        }

    is_guard = name.startswith('GUARD')
    if is_guard:
        assert withdescr
        baseclass = GuardResOp
    elif withdescr:
        baseclass = ResOpWithDescr
    else:
        baseclass = PlainResOp
    mixin = arity2mixin.get(arity, N_aryOp)

    def getopnum(self):
        return opnum

    cls_name = '%s_OP' % name
    bases = (get_base_class(mixin, baseclass),)
    dic = {'getopnum': getopnum}
    return type(cls_name, bases, dic)

setup(__name__ == '__main__')   # print out the table when run directly
del _oplist

opboolinvers = {
    rop.INT_EQ: rop.INT_NE,
    rop.INT_NE: rop.INT_EQ,
    rop.INT_LT: rop.INT_GE,
    rop.INT_GE: rop.INT_LT,
    rop.INT_GT: rop.INT_LE,
    rop.INT_LE: rop.INT_GT,

    rop.UINT_LT: rop.UINT_GE,
    rop.UINT_GE: rop.UINT_LT,
    rop.UINT_GT: rop.UINT_LE,
    rop.UINT_LE: rop.UINT_GT,

    rop.FLOAT_EQ: rop.FLOAT_NE,
    rop.FLOAT_NE: rop.FLOAT_EQ,
    rop.FLOAT_LT: rop.FLOAT_GE,
    rop.FLOAT_GE: rop.FLOAT_LT,
    rop.FLOAT_GT: rop.FLOAT_LE,
    rop.FLOAT_LE: rop.FLOAT_GT,

    rop.PTR_EQ: rop.PTR_NE,
    rop.PTR_NE: rop.PTR_EQ,
    }

opboolreflex = {
    rop.INT_EQ: rop.INT_EQ,
    rop.INT_NE: rop.INT_NE,
    rop.INT_LT: rop.INT_GT,
    rop.INT_GE: rop.INT_LE,
    rop.INT_GT: rop.INT_LT,
    rop.INT_LE: rop.INT_GE,

    rop.UINT_LT: rop.UINT_GT,
    rop.UINT_GE: rop.UINT_LE,
    rop.UINT_GT: rop.UINT_LT,
    rop.UINT_LE: rop.UINT_GE,

    rop.FLOAT_EQ: rop.FLOAT_EQ,
    rop.FLOAT_NE: rop.FLOAT_NE,
    rop.FLOAT_LT: rop.FLOAT_GT,
    rop.FLOAT_GE: rop.FLOAT_LE,
    rop.FLOAT_GT: rop.FLOAT_LT,
    rop.FLOAT_LE: rop.FLOAT_GE,

    rop.PTR_EQ: rop.PTR_EQ,
    rop.PTR_NE: rop.PTR_NE,
    }


def get_deep_immutable_oplist(operations):
    """
    When not we_are_translated(), turns ``operations`` into a frozenlist and
    monkey-patch its items to make sure they are not mutated.

    When we_are_translated(), do nothing and just return the old list.
    """
    from pypy.tool.frozenlist import frozenlist
    if we_are_translated():
        return operations
    #
    def setarg(*args):
        assert False, "operations cannot change at this point"
    def setdescr(*args):
        assert False, "operations cannot change at this point"
    newops = frozenlist(operations)
    for op in newops:
        op.setarg = setarg
        op.setdescr = setdescr
    return newops
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.