def setinfo_from_preamble(self, op, preamble_info, exported_infos):
op = self.get_box_replacement(op)
if op.get_forwarded() is not None:
return
if op.is_constant():
return # nothing we can learn
if isinstance(preamble_info, info.PtrInfo):
if preamble_info.is_virtual():
op.set_forwarded(preamble_info)
self.setinfo_from_preamble_list(preamble_info.all_items(),
exported_infos)
return
if preamble_info.is_constant():
# but op is not
op.set_forwarded(preamble_info.getconst())
return
if preamble_info.get_descr() is not None:
if isinstance(preamble_info, info.StructPtrInfo):
op.set_forwarded(info.StructPtrInfo(
preamble_info.get_descr()))
if isinstance(preamble_info, info.InstancePtrInfo):
op.set_forwarded(info.InstancePtrInfo(
preamble_info.get_descr()))
known_class = preamble_info.get_known_class(self.cpu)
if known_class:
self.make_constant_class(op, known_class, False)
if isinstance(preamble_info, info.ArrayPtrInfo):
arr_info = info.ArrayPtrInfo(preamble_info.descr)
bound = preamble_info.getlenbound(None).clone()
assert isinstance(bound, intutils.IntBound)
arr_info.lenbound = bound
op.set_forwarded(arr_info)
if isinstance(preamble_info, StrPtrInfo):
str_info = StrPtrInfo(preamble_info.mode)
bound = preamble_info.getlenbound(None).clone()
assert isinstance(bound, intutils.IntBound)
str_info.lenbound = bound
op.set_forwarded(str_info)
if preamble_info.is_nonnull():
self.make_nonnull(op)
elif isinstance(preamble_info, intutils.IntBound):
fix_lo = preamble_info.has_lower and preamble_info.lower >= MININT/2
fix_up = preamble_info.has_upper and preamble_info.upper <= MAXINT/2
if fix_lo or fix_up:
intbound = self.getintbound(op)
if fix_lo:
intbound.has_lower = True
intbound.lower = preamble_info.lower
if fix_up:
intbound.has_upper = True
intbound.upper = preamble_info.upper
elif isinstance(preamble_info, info.FloatConstInfo):
op.set_forwarded(preamble_info._const)
def test_virtual_adder_make_vstruct():
b2s, b4s = [RefFrontendOp(0), RefFrontendOp(0)]
c1s = ConstInt(111)
storage = Storage()
memo = ResumeDataLoopMemo(FakeMetaInterpStaticData())
modifier = ResumeDataVirtualAdder(FakeOptimizer(), storage, storage, None,
memo)
modifier.liveboxes_from_env = {}
modifier.liveboxes = {}
modifier.vfieldboxes = {}
v2 = info.StructPtrInfo(LLtypeMixin.ssize, is_virtual=True)
b2s.set_forwarded(v2)
v2.setfield(LLtypeMixin.adescr, b2s, c1s)
v2.setfield(LLtypeMixin.abisdescr, b2s, c1s)
v2.setfield(LLtypeMixin.bdescr, b2s, b4s)
modifier.register_virtual_fields(b2s, [c1s, c1s, b4s])
liveboxes = []
modifier._number_virtuals(liveboxes, 0)
dump_storage(storage, liveboxes)
storage.rd_consts = memo.consts[:]
storage.rd_numb = Numbering([0])
b4t = RefFrontendOp(0)
newboxes = _resume_remap(
liveboxes,
[ #b2s -- virtual
b4s
],
b4t)
#
NULL = ConstPtr.value
metainterp = MyMetaInterp()
reader = ResumeDataFakeReader(storage, newboxes, metainterp)
assert len(reader.virtuals_cache.virtuals_ptr_cache) == 1
b2t = reader.decode_ref(tag(0, TAGVIRTUAL))
trace = metainterp.trace
expected = [
(rop.NEW, [], b2t.getref_base(), LLtypeMixin.ssize),
(rop.SETFIELD_GC, [b2t, c1s], None, LLtypeMixin.adescr),
(rop.SETFIELD_GC, [b2t, c1s], None, LLtypeMixin.abisdescr),
(rop.SETFIELD_GC, [b2t, b4t], None, LLtypeMixin.bdescr),
]
with CompareableConsts():
for x, y in zip(expected, trace):
assert x == y
#
ptr = b2t.getref_base()._obj.container._as_ptr()
assert lltype.typeOf(ptr) == lltype.Ptr(LLtypeMixin.S)
assert ptr.a == 111
assert ptr.b == lltype.nullptr(LLtypeMixin.NODE)
def test_virtual(self):
loop = """
[p1, p2, i3]
p0 = new_with_vtable(descr=simpledescr)
setfield_gc(p0, i3, descr=simplevalue)
jump(p0, p0, i3)
"""
es, loop, preamble = self.optimize(loop)
vs = es.virtual_state
assert vs.state[0] is vs.state[1]
assert isinstance(vs.state[0], VirtualStateInfo)
assert isinstance(vs.state[0].fieldstate[0], NotVirtualStateInfo)
assert vs.state[0].fieldstate[0].level == LEVEL_UNKNOWN
assert vs.numnotvirtuals == 1
p = InputArgRef()
i = InputArgInt()
ptrinfo = info.StructPtrInfo(self.nodesize, is_virtual=True)
ptrinfo._fields = [i]
p.set_forwarded(ptrinfo)
vs.make_inputargs([p, p, i], FakeOptimizer())
def ensure_ptr_info_arg0(self, op):
from rpython.jit.metainterp.optimizeopt import vstring
arg0 = self.get_box_replacement(op.getarg(0))
if arg0.is_constant():
return info.ConstPtrInfo(arg0)
opinfo = arg0.get_forwarded()
if isinstance(opinfo, info.AbstractVirtualPtrInfo):
return opinfo
elif opinfo is not None:
last_guard_pos = opinfo.get_last_guard_pos()
else:
last_guard_pos = -1
assert opinfo is None or opinfo.__class__ is info.NonNullPtrInfo
opnum = op.opnum
if (rop.is_getfield(opnum) or opnum == rop.SETFIELD_GC
or opnum == rop.QUASIIMMUT_FIELD):
descr = op.getdescr()
parent_descr = descr.get_parent_descr()
if parent_descr.is_object():
opinfo = info.InstancePtrInfo(parent_descr)
else:
opinfo = info.StructPtrInfo(parent_descr)
opinfo.init_fields(parent_descr, descr.get_index())
elif (rop.is_getarrayitem(opnum) or opnum == rop.SETARRAYITEM_GC
or opnum == rop.ARRAYLEN_GC):
opinfo = info.ArrayPtrInfo(op.getdescr())
elif opnum in (rop.GUARD_CLASS, rop.GUARD_NONNULL_CLASS):
opinfo = info.InstancePtrInfo()
elif opnum in (rop.STRLEN, ):
opinfo = vstring.StrPtrInfo(vstring.mode_string)
elif opnum in (rop.UNICODELEN, ):
opinfo = vstring.StrPtrInfo(vstring.mode_unicode)
else:
assert False, "operations %s unsupported" % op
assert isinstance(opinfo, info.NonNullPtrInfo)
opinfo.last_guard_pos = last_guard_pos
arg0.set_forwarded(opinfo)
return opinfo
def make_vstruct(self, structdescr, source_op):
opinfo = info.StructPtrInfo(structdescr, is_virtual=True)
opinfo.init_fields(structdescr, 0)
newop = self.replace_op_with(source_op, source_op.getopnum())
newop.set_forwarded(opinfo)
return opinfo
