def _optimize_call_arrayop(self, op, source_box, dest_box,
source_start_box, dest_start_box, length_box):
length = self.get_constant_box(length_box)
if length and length.getint() == 0:
return True # 0-length arraycopy or arraymove
source_info = getptrinfo(source_box)
dest_info = getptrinfo(dest_box)
source_start_box = self.get_constant_box(source_start_box)
dest_start_box = self.get_constant_box(dest_start_box)
extrainfo = op.getdescr().get_extra_info()
if (source_start_box and dest_start_box and length and
((dest_info and dest_info.is_virtual()) or length.getint() <= 8)
and ((source_info and source_info.is_virtual())
or length.getint() <= 8)
and extrainfo.single_write_descr_array
is not None): #<-sanity check
source_start = source_start_box.getint()
dest_start = dest_start_box.getint()
arraydescr = extrainfo.single_write_descr_array
if arraydescr.is_array_of_structs():
return False # not supported right now
index_current = 0
index_delta = +1
index_stop = length.getint()
if (source_box is dest_box and # ARRAYMOVE only
source_start < dest_start): # iterate in reverse order
index_current = index_stop - 1
index_delta = -1
index_stop = -1
# XXX fish fish fish
while index_current != index_stop:
index = index_current
index_current += index_delta
assert index >= 0
if source_info and source_info.is_virtual():
val = source_info.getitem(arraydescr, index + source_start)
else:
opnum = OpHelpers.getarrayitem_for_descr(arraydescr)
newop = ResOperation(
opnum, [source_box,
ConstInt(index + source_start)],
descr=arraydescr)
self.optimizer.send_extra_operation(newop)
val = newop
if val is None:
continue
if dest_info and dest_info.is_virtual():
dest_info.setitem(arraydescr, index + dest_start,
get_box_replacement(dest_box), val)
else:
newop = ResOperation(
rop.SETARRAYITEM_GC,
[dest_box, ConstInt(index + dest_start), val],
descr=arraydescr)
self.optimizer.send_extra_operation(newop)
return True
return False
def produce_short_preamble_ops(self, structbox, descr, index, optimizer, shortboxes):
if self._items is None:
return
if index >= len(self._items):
# we don't know about this item
return
item = self._items[index]
if item is not None:
op = optimizer.get_box_replacement(item)
opnum = OpHelpers.getarrayitem_for_descr(descr)
getarrayitem_op = ResOperation(opnum, [structbox, ConstInt(index)], descr=descr)
shortboxes.add_heap_op(op, getarrayitem_op)
def produce_short_preamble_ops(self, structbox, descr, index, optimizer,
shortboxes):
if self._items is None:
return
if index >= len(self._items):
# we don't know about this item
return
item = self._items[index]
if item is not None:
op = optimizer.get_box_replacement(item)
opnum = OpHelpers.getarrayitem_for_descr(descr)
getarrayitem_op = ResOperation(
opnum, [structbox, ConstInt(index)], descr=descr)
shortboxes.add_heap_op(op, getarrayitem_op)
def _optimize_CALL_ARRAYCOPY(self, op):
length = self.get_constant_box(op.getarg(5))
if length and length.getint() == 0:
return None # 0-length arraycopy
source_info = self.getptrinfo(op.getarg(1))
dest_info = self.getptrinfo(op.getarg(2))
source_start_box = self.get_constant_box(op.getarg(3))
dest_start_box = self.get_constant_box(op.getarg(4))
extrainfo = op.getdescr().get_extra_info()
if (source_start_box and dest_start_box and length and
((dest_info and dest_info.is_virtual()) or length.getint() <= 8)
and ((source_info and source_info.is_virtual())
or length.getint() <= 8)
and extrainfo.single_write_descr_array
is not None): #<-sanity check
source_start = source_start_box.getint()
dest_start = dest_start_box.getint()
arraydescr = extrainfo.single_write_descr_array
if arraydescr.is_array_of_structs():
return self.emit(op) # not supported right now
# XXX fish fish fish
for index in range(length.getint()):
if source_info and source_info.is_virtual():
val = source_info.getitem(arraydescr, index + source_start)
else:
opnum = OpHelpers.getarrayitem_for_descr(arraydescr)
newop = ResOperation(
opnum, [op.getarg(1),
ConstInt(index + source_start)],
descr=arraydescr)
self.optimizer.send_extra_operation(newop)
val = newop
if val is None:
continue
if dest_info and dest_info.is_virtual():
dest_info.setitem(arraydescr, index + dest_start,
self.get_box_replacement(op.getarg(2)),
val)
else:
newop = ResOperation(
rop.SETARRAYITEM_GC,
[op.getarg(2),
ConstInt(index + dest_start), val],
descr=arraydescr)
self.optimizer.send_extra_operation(newop)
return None
return self.emit(op)
def _optimize_CALL_ARRAYCOPY(self, op):
length = self.get_constant_box(op.getarg(5))
if length and length.getint() == 0:
return True # 0-length arraycopy
source_info = self.getptrinfo(op.getarg(1))
dest_info = self.getptrinfo(op.getarg(2))
source_start_box = self.get_constant_box(op.getarg(3))
dest_start_box = self.get_constant_box(op.getarg(4))
extrainfo = op.getdescr().get_extra_info()
if (source_start_box and dest_start_box
and length and ((dest_info and dest_info.is_virtual()) or
length.getint() <= 8) and
((source_info and source_info.is_virtual()) or length.getint() <= 8)
and len(extrainfo.write_descrs_arrays) == 1): # <-sanity check
source_start = source_start_box.getint()
dest_start = dest_start_box.getint()
arraydescr = extrainfo.write_descrs_arrays[0]
if arraydescr.is_array_of_structs():
return False # not supported right now
# XXX fish fish fish
for index in range(length.getint()):
if source_info and source_info.is_virtual():
val = source_info.getitem(arraydescr, index + source_start)
else:
opnum = OpHelpers.getarrayitem_for_descr(arraydescr)
newop = ResOperation(opnum,
[op.getarg(1),
ConstInt(index + source_start)],
descr=arraydescr)
self.optimizer.send_extra_operation(newop)
val = newop
if val is None:
continue
if dest_info and dest_info.is_virtual():
dest_info.setitem(arraydescr, index + dest_start,
self.get_box_replacement(op.getarg(2)),
val)
else:
newop = ResOperation(rop.SETARRAYITEM_GC,
[op.getarg(2),
ConstInt(index + dest_start),
val],
descr=arraydescr)
self.emit_operation(newop)
return True
return False
def patch_new_loop_to_load_virtualizable_fields(loop, jitdriver_sd, vable):
# XXX merge with rewriting
vinfo = jitdriver_sd.virtualizable_info
extra_ops = []
inputargs = loop.inputargs
vable_box = inputargs[jitdriver_sd.index_of_virtualizable]
i = jitdriver_sd.num_red_args
loop.inputargs = inputargs[:i]
for descr in vinfo.static_field_descrs:
assert i < len(inputargs)
box = inputargs[i]
opnum = OpHelpers.getfield_for_descr(descr)
emit_op(extra_ops,
ResOperation(opnum, [vable_box], descr))
box.set_forwarded(extra_ops[-1])
i += 1
arrayindex = 0
for descr in vinfo.array_field_descrs:
arraylen = vinfo.get_array_length(vable, arrayindex)
arrayop = ResOperation(rop.GETFIELD_GC_R, [vable_box], descr)
emit_op(extra_ops, arrayop)
arraydescr = vinfo.array_descrs[arrayindex]
assert i + arraylen <= len(inputargs)
for index in range(arraylen):
opnum = OpHelpers.getarrayitem_for_descr(arraydescr)
box = inputargs[i]
emit_op(extra_ops,
ResOperation(opnum,
[arrayop, ConstInt(index)],
descr=arraydescr))
i += 1
box.set_forwarded(extra_ops[-1])
arrayindex += 1
assert i == len(inputargs)
for op in loop.operations:
emit_op(extra_ops, op)
loop.operations = extra_ops
def patch_new_loop_to_load_virtualizable_fields(loop, jitdriver_sd, vable):
# XXX merge with rewriting
vinfo = jitdriver_sd.virtualizable_info
extra_ops = []
inputargs = loop.inputargs
vable_box = inputargs[jitdriver_sd.index_of_virtualizable]
i = jitdriver_sd.num_red_args
loop.inputargs = inputargs[:i]
for descr in vinfo.static_field_descrs:
assert i < len(inputargs)
box = inputargs[i]
opnum = OpHelpers.getfield_for_descr(descr)
emit_op(extra_ops,
ResOperation(opnum, [vable_box], descr=descr))
box.set_forwarded(extra_ops[-1])
i += 1
arrayindex = 0
for descr in vinfo.array_field_descrs:
arraylen = vinfo.get_array_length(vable, arrayindex)
arrayop = ResOperation(rop.GETFIELD_GC_R, [vable_box], descr=descr)
emit_op(extra_ops, arrayop)
arraydescr = vinfo.array_descrs[arrayindex]
assert i + arraylen <= len(inputargs)
for index in range(arraylen):
opnum = OpHelpers.getarrayitem_for_descr(arraydescr)
box = inputargs[i]
emit_op(extra_ops,
ResOperation(opnum,
[arrayop, ConstInt(index)],
descr=arraydescr))
i += 1
box.set_forwarded(extra_ops[-1])
arrayindex += 1
assert i == len(inputargs)
for op in loop.operations:
emit_op(extra_ops, op)
loop.operations = extra_ops