Python unsimplify.varoftype函数代码示例

def test_nongc_ptr_eq():
    v1 = varoftype(rclass.NONGCOBJECTPTR)
    v2 = varoftype(rclass.NONGCOBJECTPTR)
    v3 = varoftype(lltype.Bool)
    c0 = const(lltype.nullptr(rclass.NONGCOBJECT))
    #
    for opname, reducedname in [('ptr_eq', 'int_is_zero'),
                                ('ptr_ne', 'int_is_true')]:
        op = SpaceOperation(opname, [v1, v2], v3)
        op1 = Transformer().rewrite_operation(op)
        assert op1.opname == opname.replace('ptr_', 'int_')
        assert op1.args == [v1, v2]
        #
        op = SpaceOperation(opname, [v1, c0], v3)
        op1 = Transformer().rewrite_operation(op)
        assert op1.opname == reducedname
        assert op1.args == [v1]
        #
        op = SpaceOperation(opname, [c0, v2], v3)
        op1 = Transformer().rewrite_operation(op)
        assert op1.opname == reducedname
        assert op1.args == [v2]
    #
    op = SpaceOperation('ptr_iszero', [v1], v3)
    op1 = Transformer().rewrite_operation(op)
    assert op1.opname == 'int_is_zero'
    assert op1.args == [v1]
    #
    op = SpaceOperation('ptr_nonzero', [v1], v3)
    op1 = Transformer().rewrite_operation(op)
    assert op1.opname == 'int_is_true'
    assert op1.args == [v1]

 def test_is_true(self):
     for opname, T in [('llong_is_true', lltype.SignedLongLong),
                       ('ullong_is_true', lltype.UnsignedLongLong)]:
         v = varoftype(T)
         v_result = varoftype(lltype.Bool)
         op = SpaceOperation(opname, [v], v_result)
         tr = Transformer(FakeCPU(), FakeBuiltinCallControl())
         oplist = tr.rewrite_operation(op)
         assert len(oplist) == 2
         assert oplist[0].opname == 'residual_call_irf_f'
         assert oplist[0].args[0].value == 'llong_from_int'
         assert oplist[0].args[1] == 'calldescr-84'
         assert list(oplist[0].args[2]) == [const(0)]
         assert list(oplist[0].args[3]) == []
         assert list(oplist[0].args[4]) == []
         v_x = oplist[0].result
         assert isinstance(v_x, Variable)
         assert v_x.concretetype is T
         assert oplist[1].opname == 'residual_call_irf_i'
         assert oplist[1].args[0].value == 'llong_ne'
         assert oplist[1].args[1] == 'calldescr-76'
         assert list(oplist[1].args[2]) == []
         assert list(oplist[1].args[3]) == []
         assert list(oplist[1].args[4]) == [v, v_x]
         assert oplist[1].result == v_result

 def do_check(self, opname, oopspecindex, ARGS, RESULT):
     vlist = [varoftype(ARG) for ARG in ARGS]
     v_result = varoftype(RESULT)
     op = SpaceOperation(opname, vlist, v_result)
     tr = Transformer(FakeCPU(), FakeBuiltinCallControl())
     op1 = tr.rewrite_operation(op)
     if isinstance(op1, list):
         [op1] = op1
     #
     def is_llf(TYPE):
         return (TYPE == lltype.SignedLongLong or
                 TYPE == lltype.UnsignedLongLong or
                 TYPE == lltype.Float)
     if is_llf(RESULT):
         assert op1.opname == 'residual_call_irf_f'
     else:
         assert op1.opname == 'residual_call_irf_i'
     gotindex = getattr(EffectInfo, 'OS_' + op1.args[0].value.upper())
     assert gotindex == oopspecindex
     assert op1.args[1] == 'calldescr-%d' % oopspecindex
     assert list(op1.args[2]) == [v for v in vlist
                                  if not is_llf(v.concretetype)]
     assert list(op1.args[3]) == []
     assert list(op1.args[4]) == [v for v in vlist
                                  if is_llf(v.concretetype)]
     assert op1.result == v_result

def test_setfield():
    # XXX a more compact encoding would be possible; see test_getfield()
    S1 = lltype.Struct('S1')
    S2 = lltype.GcStruct('S2')
    S  = lltype.GcStruct('S', ('int', lltype.Signed),
                              ('ps1', lltype.Ptr(S1)),
                              ('ps2', lltype.Ptr(S2)),
                              ('flt', lltype.Float),
                              ('boo', lltype.Bool),
                              ('chr', lltype.Char),
                              ('unc', lltype.UniChar))
    for name, suffix in [('int', 'i'),
                         ('ps1', 'i'),
                         ('ps2', 'r'),
                         ('flt', 'f'),
                         ('boo', 'i'),
                         ('chr', 'i'),
                         ('unc', 'i')]:
        v_parent = varoftype(lltype.Ptr(S))
        c_name = Constant(name, lltype.Void)
        v_newvalue = varoftype(getattr(S, name))
        op = SpaceOperation('setfield', [v_parent, c_name, v_newvalue],
                            varoftype(lltype.Void))
        op1 = Transformer(FakeCPU()).rewrite_operation(op)
        assert op1.opname == 'setfield_gc_' + suffix
        fielddescr = ('fielddescr', S, name)
        assert op1.args == [v_parent, fielddescr, v_newvalue]
        assert op1.result is None

def test_resizable_getitem():
    builtin_test('list.getitem/NONNEG',
                 [varoftype(VARLIST), varoftype(lltype.Signed)],
                 lltype.Void, "")
    builtin_test('list.getitem/NEG',
                 [varoftype(VARLIST), varoftype(lltype.Signed)],
                 lltype.Void, "")

def test_symmetric():
    ops = {'int_add': 'int_add',
           'int_or': 'int_or',
           'int_gt': ('int_gt', 'int_lt'),
           'uint_eq': 'int_eq',
           'uint_le': ('uint_le', 'uint_ge'),
           'char_ne': 'int_ne',
           'char_lt': ('int_lt', 'int_gt'),
           'uint_xor': 'int_xor',
           'float_mul': 'float_mul',
           'float_gt': ('float_gt', 'float_lt'),
           }
    v3 = varoftype(lltype.Signed)
    for v1 in [varoftype(lltype.Signed), const(42)]:
        for v2 in [varoftype(lltype.Signed), const(43)]:
            for name1, name2 in ops.items():
                op = SpaceOperation(name1, [v1, v2], v3)
                op1 = Transformer(FakeCPU()).rewrite_operation(op)
                if isinstance(name2, str):
                    name2 = name2, name2
                if isinstance(v1, Constant) and isinstance(v2, Variable):
                    assert op1.args == [v2, v1]
                    assert op1.result == v3
                    assert op1.opname == name2[1]
                else:
                    assert op1.args == [v1, v2]
                    assert op1.result == v3
                    assert op1.opname == name2[0]

def test_getfield():
    # XXX a more compact encoding would be possible, something along
    # the lines of  getfield_gc_r %r0, $offset, %r1
    # which would not need a Descr at all.
    S1 = lltype.Struct('S1')
    S2 = lltype.GcStruct('S2')
    S  = lltype.GcStruct('S', ('int', lltype.Signed),
                              ('ps1', lltype.Ptr(S1)),
                              ('ps2', lltype.Ptr(S2)),
                              ('flt', lltype.Float),
                              ('boo', lltype.Bool),
                              ('chr', lltype.Char),
                              ('unc', lltype.UniChar))
    for name, suffix in [('int', 'i'),
                         ('ps1', 'i'),
                         ('ps2', 'r'),
                         ('flt', 'f'),
                         ('boo', 'i'),
                         ('chr', 'i'),
                         ('unc', 'i')]:
        v_parent = varoftype(lltype.Ptr(S))
        c_name = Constant(name, lltype.Void)
        v_result = varoftype(getattr(S, name))
        op = SpaceOperation('getfield', [v_parent, c_name], v_result)
        op1 = Transformer(FakeCPU()).rewrite_operation(op)
        assert op1.opname == 'getfield_gc_' + suffix
        fielddescr = ('fielddescr', S, name)
        assert op1.args == [v_parent, fielddescr]
        assert op1.result == v_result

 def dispatcher(self, shape, index, argtypes, resulttype):
     key = shape, index, tuple(argtypes), resulttype
     if key in self._dispatch_cache:
         return self._dispatch_cache[key]
     from pypy.translator.unsimplify import varoftype
     from pypy.objspace.flow.model import FunctionGraph, Link, Block, SpaceOperation
     inputargs = [varoftype(t) for t in [Char] + argtypes]
     startblock = Block(inputargs)
     startblock.exitswitch = inputargs[0]
     graph = FunctionGraph("dispatcher", startblock, varoftype(resulttype))
     row_of_graphs = self.callfamily.calltables[shape][index]
     links = []
     descs = list(self.s_pbc.descriptions)
     if self.s_pbc.can_be_None:
         descs.insert(0, None)
     for desc in descs:
         if desc is None:
             continue
         args_v = [varoftype(t) for t in argtypes]
         b = Block(args_v)
         llfn = self.rtyper.getcallable(row_of_graphs[desc])
         v_fn = inputconst(typeOf(llfn), llfn)
         v_result = varoftype(resulttype)
         b.operations.append(
             SpaceOperation("direct_call", [v_fn] + args_v, v_result))
         b.closeblock(Link([v_result], graph.returnblock))
         i = self.descriptions.index(desc)
         links.append(Link(inputargs[1:], b, chr(i)))
         links[-1].llexitcase = chr(i)
     startblock.closeblock(*links)
     self.rtyper.annotator.translator.graphs.append(graph)
     ll_ret = self.rtyper.type_system.getcallable(graph)
     #FTYPE = FuncType
     c_ret = self._dispatch_cache[key] = inputconst(typeOf(ll_ret), ll_ret)
     return c_ret

def test_fixed_getitem_foldable():
    builtin_test('list.getitem_foldable/NONNEG',
                 [varoftype(FIXEDLIST), varoftype(lltype.Signed)],
                 lltype.Void, "")
    builtin_test('list.getitem_foldable/NEG',
                 [varoftype(FIXEDLIST), varoftype(lltype.Signed)],
                 lltype.Void, "")

 def test_casts(self):
     self.do_check('cast_int_to_longlong', EffectInfo.OS_LLONG_FROM_INT,
                   [lltype.Signed], lltype.SignedLongLong)
     self.do_check('cast_uint_to_longlong', EffectInfo.OS_LLONG_FROM_UINT,
                   [lltype.Unsigned], lltype.SignedLongLong)
     self.do_check('truncate_longlong_to_int', EffectInfo.OS_LLONG_TO_INT,
                   [lltype.SignedLongLong], lltype.Signed)
     self.do_check('cast_float_to_longlong', EffectInfo.OS_LLONG_FROM_FLOAT,
                   [lltype.Float], lltype.SignedLongLong)
     self.do_check('cast_longlong_to_float', EffectInfo.OS_LLONG_TO_FLOAT,
                   [lltype.SignedLongLong], lltype.Float)
     for T1 in [lltype.SignedLongLong, lltype.UnsignedLongLong]:
         for T2 in [lltype.Signed, lltype.Unsigned]:
             self.do_check('cast_primitive', EffectInfo.OS_LLONG_TO_INT,
                           [T1], T2)
             self.do_check('force_cast', EffectInfo.OS_LLONG_TO_INT,
                           [T1], T2)
             if T2 == lltype.Signed:
                 expected = EffectInfo.OS_LLONG_FROM_INT
             else:
                 expected = EffectInfo.OS_LLONG_FROM_UINT
             self.do_check('cast_primitive', expected, [T2], T1)
             self.do_check('force_cast', expected, [T2], T1)
     #
     for T1 in [lltype.SignedLongLong, lltype.UnsignedLongLong]:
         for T2 in [lltype.SignedLongLong, lltype.UnsignedLongLong]:
             vlist = [varoftype(T1)]
             v_result = varoftype(T2)
             op = SpaceOperation('force_cast', vlist, v_result)
             tr = Transformer(FakeCPU(), FakeBuiltinCallControl())
             op1 = tr.rewrite_operation(op)
             assert op1 is None

def test_graphs_from_no_target():
    cc = CallControl()
    F = lltype.FuncType([], lltype.Signed)
    v = varoftype(lltype.Signed)
    op = SpaceOperation("indirect_call", [varoftype(lltype.Ptr(F)), Constant(None, lltype.Void)], v)
    lst = cc.graphs_from(op, {}.__contains__)
    assert lst is None

def get_direct_call_op(argtypes, restype):
    FUNC = lltype.FuncType(argtypes, restype)
    fnptr = lltype.functionptr(FUNC, "g")    # no graph
    c_fnptr = const(fnptr)
    vars = [varoftype(TYPE) for TYPE in argtypes]
    v_result = varoftype(restype)
    op = SpaceOperation('direct_call', [c_fnptr] + vars, v_result)
    return op

def test_write_barrier_support_setarrayitem():
    PTR_TYPE2 = lltype.Ptr(lltype.GcStruct('T', ('y', lltype.Signed)))
    ARRAYPTR = lltype.Ptr(lltype.GcArray(PTR_TYPE2))
    write_barrier_check(SpaceOperation(
        "setarrayitem",
        [varoftype(ARRAYPTR), varoftype(lltype.Signed),
         varoftype(PTR_TYPE2)],
        varoftype(lltype.Void)))

def test_write_barrier_support_setfield():
    PTR_TYPE2 = lltype.Ptr(lltype.GcStruct('T', ('y', lltype.Signed)))
    PTR_TYPE = lltype.Ptr(lltype.GcStruct('S', ('x', PTR_TYPE2)))
    write_barrier_check(SpaceOperation(
        "setfield",
        [varoftype(PTR_TYPE), Constant('x', lltype.Void),
         varoftype(PTR_TYPE2)],
        varoftype(lltype.Void)))

def test_dont_add_write_barrier_for_constant_new_value():
    PTR_TYPE2 = lltype.Ptr(lltype.GcStruct('T', ('y', lltype.Signed)))
    PTR_TYPE = lltype.Ptr(lltype.GcStruct('S', ('x', PTR_TYPE2)))
    write_barrier_check(SpaceOperation(
        "setfield",
        [varoftype(PTR_TYPE), Constant('x', lltype.Void),
         Constant('foo', varoftype(PTR_TYPE2))],
        varoftype(lltype.Void)), needs_write_barrier=False)