def test_cancollect_external():
fext1 = rffi.llexternal('fext1', [], lltype.Void, releasegil=False)
def g():
fext1()
t = rtype(g, [])
gg = graphof(t, g)
assert not CollectAnalyzer(t).analyze_direct_call(gg)
fext2 = rffi.llexternal('fext2', [], lltype.Void, releasegil=True)
def g():
fext2()
t = rtype(g, [])
gg = graphof(t, g)
assert CollectAnalyzer(t).analyze_direct_call(gg)
S = lltype.GcStruct('S', ('x', lltype.Signed))
FUNC = lltype.Ptr(lltype.FuncType([lltype.Signed], lltype.Void))
fext3 = rffi.llexternal('fext3', [FUNC], lltype.Void, releasegil=False)
def h(x):
lltype.malloc(S, zero=True)
def g():
fext3(h)
t = rtype(g, [])
gg = graphof(t, g)
assert CollectAnalyzer(t).analyze_direct_call(gg)
def test_cancollect():
S = lltype.GcStruct('S', ('x', lltype.Signed))
def g():
lltype.malloc(S, zero=True)
t = rtype(g, [])
gg = graphof(t, g)
assert CollectAnalyzer(t).analyze_direct_call(gg)
def g(x):
return -x
t = rtype(g, [int])
gg = graphof(t, g)
assert not CollectAnalyzer(t).analyze_direct_call(gg)
def test_find_initializing_stores_across_blocks():
class A(object):
pass
class B(object):
pass
def f(x):
a1 = A()
a2 = A()
a = A()
b = B()
b.a = a
if x:
b.b = a1
b.c = a2
else:
b.c = a1
b.b = a2
t = rtype(f, [int])
etrafo = ExceptionTransformer(t)
graphs = etrafo.transform_completely()
collect_analyzer = CollectAnalyzer(t)
init_stores = find_initializing_stores(collect_analyzer, t.graphs[0],
mkentrymap(t.graphs[0]))
assert len(init_stores) == 5
def test_find_initializing_stores():
class A(object):
pass
class B(object):
pass
def f():
a = A()
b = B()
b.a = a
b.b = 1
t = rtype(f, [])
etrafo = ExceptionTransformer(t)
graphs = etrafo.transform_completely()
collect_analyzer = CollectAnalyzer(t)
init_stores = find_initializing_stores(collect_analyzer, t.graphs[0])
assert len(init_stores) == 1
def test_list_operations():
class A(object):
pass
def f():
l = [A(), A()]
l.append(A())
l[1] = l[0]
return len(l)
t = rtype(f, [])
backend_optimizations(t, clever_malloc_removal=False, storesink=True)
etrafo = ExceptionTransformer(t)
graph = etrafo.transform_completely()
collect_analyzer = CollectAnalyzer(t)
clean_setarrayitems = find_clean_setarrayitems(collect_analyzer,
t.graphs[0])
assert len(clean_setarrayitems) == 1
def test_find_clean_setarrayitems():
S = lltype.GcStruct('S')
A = lltype.GcArray(lltype.Ptr(S))
def f():
l = lltype.malloc(A, 3)
l[0] = lltype.malloc(S)
l[1] = lltype.malloc(S)
l[2] = lltype.malloc(S)
x = l[1]
l[0] = x
return len(l)
t = rtype(f, [])
etrafo = ExceptionTransformer(t)
graph = etrafo.transform_completely()
collect_analyzer = CollectAnalyzer(t)
clean_setarrayitems = find_clean_setarrayitems(collect_analyzer,
t.graphs[0])
assert len(clean_setarrayitems) == 1