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import py
from rpython.jit.codewriter import support
from rpython.jit.codewriter.codewriter import CodeWriter
from rpython.jit.metainterp.history import AbstractDescr
from rpython.rtyper.lltypesystem import lltype, llmemory, rffi
from rpython.translator.backendopt.all import backend_optimizations
class FakeCallDescr(AbstractDescr):
def __init__(self, FUNC, ARGS, RESULT, effectinfo):
self.FUNC = FUNC
self.ARGS = ARGS
self.RESULT = RESULT
self.effectinfo = effectinfo
def get_extra_info(self):
return self.effectinfo
class FakeFieldDescr(AbstractDescr):
def __init__(self, STRUCT, fieldname):
self.STRUCT = STRUCT
self.fieldname = fieldname
class FakeSizeDescr(AbstractDescr):
def __init__(self, STRUCT, vtable=None):
self.STRUCT = STRUCT
self.vtable = vtable
class FakeArrayDescr(AbstractDescr):
def __init__(self, ARRAY):
self.ARRAY = ARRAY
class FakeCPU:
def __init__(self, rtyper):
self.rtyper = rtyper
class tracker:
pass
calldescrof = FakeCallDescr
fielddescrof = FakeFieldDescr
sizeof = FakeSizeDescr
arraydescrof = FakeArrayDescr
class FakePolicy:
def look_inside_graph(self, graph):
return graph.name != 'dont_look'
class FakeJitDriverSD:
def __init__(self, portal_graph):
self.portal_graph = portal_graph
self.portal_runner_ptr = "???"
self.virtualizable_info = None
self.greenfield_info = None
def test_loop():
def f(a, b):
while a > 0:
b += a
a -= 1
return b
cw = CodeWriter()
jitcode = cw.transform_func_to_jitcode(f, [5, 6])
assert jitcode.code == ("\x00\x00\x00\x10\x00" # ends at 5
"\x01\x01\x00\x01"
"\x02\x00\x01\x00"
"\x03\x00\x00"
"\x04\x01")
assert cw.assembler.insns == {'goto_if_not_int_gt/icL': 0,
'int_add/ii>i': 1,
'int_sub/ic>i': 2,
'goto/L': 3,
'int_return/i': 4}
assert jitcode.num_regs_i() == 2
assert jitcode.num_regs_r() == 0
assert jitcode.num_regs_f() == 0
assert jitcode._live_vars(0) == '%i0 %i1'
#
from rpython.jit.codewriter.jitcode import MissingLiveness
for i in range(len(jitcode.code)+1):
if i != 0:
py.test.raises(MissingLiveness, jitcode._live_vars, i)
def test_call():
def ggg(x):
return x * 2
def fff(a, b):
return ggg(b) - ggg(a)
rtyper = support.annotate(fff, [35, 42])
jitdriver_sd = FakeJitDriverSD(rtyper.annotator.translator.graphs[0])
cw = CodeWriter(FakeCPU(rtyper), [jitdriver_sd])
cw.find_all_graphs(FakePolicy())
cw.make_jitcodes(verbose=True)
jitcode = jitdriver_sd.mainjitcode
print jitcode.dump()
[jitcode2] = cw.assembler.descrs
print jitcode2.dump()
assert jitcode is not jitcode2
assert jitcode.name == 'fff'
assert jitcode2.name == 'ggg'
assert 'ggg' in jitcode.dump()
assert lltype.typeOf(jitcode2.fnaddr) == llmemory.Address
assert isinstance(jitcode2.calldescr, FakeCallDescr)
def test_integration():
from rpython.jit.metainterp.blackhole import BlackholeInterpBuilder
def f(a, b):
while a > 2:
b += a
a -= 1
return b
cw = CodeWriter()
jitcode = cw.transform_func_to_jitcode(f, [5, 6])
blackholeinterpbuilder = BlackholeInterpBuilder(cw)
blackholeinterp = blackholeinterpbuilder.acquire_interp()
blackholeinterp.setposition(jitcode, 0)
blackholeinterp.setarg_i(0, 6)
blackholeinterp.setarg_i(1, 100)
blackholeinterp.run()
assert blackholeinterp.get_tmpreg_i() == 100+6+5+4+3
def test_instantiate():
class A1:
id = 651
class A2(A1):
id = 652
class B1:
id = 661
class B2(B1):
id = 662
def dont_look(n):
return n + 1
classes = [
(A1, B1),
(A2, B2)
]
def f(n):
x, y = classes[n]
return x().id + y().id + dont_look(n)
rtyper = support.annotate(f, [0])
maingraph = rtyper.annotator.translator.graphs[0]
cw = CodeWriter(FakeCPU(rtyper), [FakeJitDriverSD(maingraph)])
cw.find_all_graphs(FakePolicy())
cw.make_jitcodes(verbose=True)
#
assert len(cw.assembler.indirectcalltargets) == 4
names = [jitcode.name for jitcode in cw.assembler.indirectcalltargets]
for expected in ['A1', 'A2', 'B1', 'B2']:
for name in names:
if name.startswith('instantiate_') and name.endswith(expected):
break
else:
assert 0, "missing instantiate_*_%s in:\n%r" % (expected,
names)
names = set([value for key, value in cw.assembler.list_of_addr2name])
assert 'dont_look' in names
def test_instantiate_with_unreasonable_attr():
# It is possible to have in real code the instantiate() function for
# a class be dont-look-inside. This is caused by the code that
# initialize the instance attributes: if one attribute has a strange
# type, the whole function is disabled. Check that it still works.
class MyFakePolicy:
def look_inside_graph(self, graph):
name = graph.name
return not (name.startswith('instantiate_') and
name.endswith('A2'))
class A1:
pass
class A2(A1):
pass
classes = [A1, A2]
def f(n):
x = classes[n]
x()
rtyper = support.annotate(f, [1])
maingraph = rtyper.annotator.translator.graphs[0]
cw = CodeWriter(FakeCPU(rtyper), [FakeJitDriverSD(maingraph)])
cw.find_all_graphs(MyFakePolicy())
cw.make_jitcodes(verbose=True)
#
names = [jitcode.name for jitcode in cw.assembler.indirectcalltargets]
assert len(names) == 1
assert names[0].startswith('instantiate_') and names[0].endswith('A1')
def test_int_abs():
def f(n):
return abs(n)
rtyper = support.annotate(f, [35])
jitdriver_sd = FakeJitDriverSD(rtyper.annotator.translator.graphs[0])
cw = CodeWriter(FakeCPU(rtyper), [jitdriver_sd])
cw.find_all_graphs(FakePolicy())
cw.make_jitcodes(verbose=True)
#
s = jitdriver_sd.mainjitcode.dump()
assert "inline_call_ir_i <JitCode '_ll_1_int_abs__Signed'>" in s
def test_raw_malloc_and_access():
TP = rffi.CArray(lltype.Signed)
def f(n):
a = lltype.malloc(TP, n, flavor='raw')
a[0] = n
res = a[0]
lltype.free(a, flavor='raw')
return res
rtyper = support.annotate(f, [35])
jitdriver_sd = FakeJitDriverSD(rtyper.annotator.translator.graphs[0])
cw = CodeWriter(FakeCPU(rtyper), [jitdriver_sd])
cw.find_all_graphs(FakePolicy())
cw.make_jitcodes(verbose=True)
#
s = jitdriver_sd.mainjitcode.dump()
assert 'residual_call_ir_i $<* fn _ll_1_raw_malloc_varsize__Signed>' in s
assert 'setarrayitem_raw_i' in s
assert 'getarrayitem_raw_i' in s
assert 'residual_call_ir_v $<* fn _ll_1_raw_free__arrayPtr>' in s
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