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import py
from rpython.translator.translator import TranslationContext, graphof
from rpython.translator.backendopt.storesink import storesink_graph
from rpython.translator.backendopt import removenoops
from rpython.flowspace.model import checkgraph
from rpython.conftest import option
class TestStoreSink(object):
def translate(self, func, argtypes):
t = TranslationContext()
t.buildannotator().build_types(func, argtypes)
t.buildrtyper().specialize()
return t
def check(self, f, argtypes, no_getfields=0):
t = self.translate(f, argtypes)
getfields = 0
graph = graphof(t, f)
removenoops.remove_same_as(graph)
checkgraph(graph)
storesink_graph(graph)
checkgraph(graph)
if option.view:
t.view()
for block in graph.iterblocks():
for op in block.operations:
if op.opname == 'getfield':
getfields += 1
if no_getfields != getfields:
py.test.fail("Expected %d, got %d getfields" %
(no_getfields, getfields))
def test_infrastructure(self):
class A(object):
pass
def f(i):
a = A()
a.x = i
return a.x
self.check(f, [int], 0)
def test_simple(self):
class A(object):
pass
def f(i):
a = A()
a.x = i
return a.x + a.x
self.check(f, [int], 0)
def test_irrelevant_setfield(self):
class A(object):
pass
def f(i):
a = A()
a.x = i
one = a.x
a.y = 3
two = a.x
return one + two
self.check(f, [int], 0)
def test_relevant_setfield(self):
class A(object):
pass
def f(i):
a = A()
b = A()
a.x = i
b.x = i + 1
one = a.x
b.x = i
two = a.x
return one + two
self.check(f, [int], 2)
def test_different_concretetype(self):
class A(object):
pass
class B(object):
pass
def f(i):
a = A()
b = B()
a.x = i
one = a.x
b.x = i + 1
two = a.x
return one + two
self.check(f, [int], 0)
def test_subclass(self):
class A(object):
pass
class B(A):
pass
def f(i):
a = A()
b = B()
a.x = i
one = a.x
b.x = i + 1
two = a.x
return one + two
self.check(f, [int], 1)
def test_bug_1(self):
class A(object):
pass
def f(i):
a = A()
a.cond = i > 0
n = a.cond
if a.cond:
return True
return n
self.check(f, [int], 0)
def test_cfg_splits(self):
class A(object):
pass
def f(i):
a = A()
j = i
for i in range(i):
a.x = i
if i:
j = a.x + a.x
else:
j = a.x * 5
return j
self.check(f, [int], 0)
def test_malloc_does_not_invalidate(self):
class A(object):
pass
class B(object):
pass
def f(i):
a = A()
a.x = i
b = B()
return a.x
self.check(f, [int], 0)
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