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import py
from rpython.jit.metainterp import jitexc
from rpython.jit.metainterp.warmspot import get_stats
from rpython.rlib.jit import JitDriver, set_param, unroll_safe, jit_callback
from rpython.jit.backend.llgraph import runner
from rpython.jit.metainterp.test.support import LLJitMixin
from rpython.jit.metainterp.optimizeopt import ALL_OPTS_NAMES
class Exit(Exception):
def __init__(self, result):
self.result = result
class TestLLWarmspot(LLJitMixin):
CPUClass = runner.LLGraphCPU
def test_basic(self):
mydriver = JitDriver(reds=['a'],
greens=['i'])
CODE_INCREASE = 0
CODE_JUMP = 1
lst = [CODE_INCREASE, CODE_INCREASE, CODE_JUMP]
def interpreter_loop(a):
i = 0
while True:
mydriver.jit_merge_point(i=i, a=a)
if i >= len(lst):
break
elem = lst[i]
if elem == CODE_INCREASE:
a = a + 1
i += 1
elif elem == CODE_JUMP:
if a < 20:
i = 0
mydriver.can_enter_jit(i=i, a=a)
else:
i += 1
else:
pass
raise Exit(a)
def main(a):
try:
interpreter_loop(a)
except Exit as e:
return e.result
res = self.meta_interp(main, [1])
assert res == 21
def test_reentry(self):
mydriver = JitDriver(reds = ['n'], greens = [])
def f(n):
while n > 0:
mydriver.can_enter_jit(n=n)
mydriver.jit_merge_point(n=n)
if n % 20 == 0:
n -= 2
n -= 1
res = self.meta_interp(f, [60])
assert res == f(30)
def test_location(self):
def get_printable_location(n):
return 'GREEN IS %d.' % n
myjitdriver = JitDriver(greens=['n'], reds=['m'],
get_printable_location=get_printable_location)
def f(n, m):
while m > 0:
myjitdriver.can_enter_jit(n=n, m=m)
myjitdriver.jit_merge_point(n=n, m=m)
m -= 1
self.meta_interp(f, [123, 10])
assert len(get_stats().locations) >= 4
for loc in get_stats().locations:
assert loc == (0, 0, 123)
def test_set_param_enable_opts(self):
from rpython.rtyper.annlowlevel import llstr, hlstr
myjitdriver = JitDriver(greens = [], reds = ['n'])
class A(object):
def m(self, n):
return n-1
def g(n):
while n > 0:
myjitdriver.can_enter_jit(n=n)
myjitdriver.jit_merge_point(n=n)
n = A().m(n)
return n
def f(n, enable_opts):
set_param(None, 'enable_opts', hlstr(enable_opts))
return g(n)
# check that the set_param will override the default
res = self.meta_interp(f, [10, llstr('')])
assert res == 0
self.check_resops(new_with_vtable=1)
res = self.meta_interp(f, [10, llstr(ALL_OPTS_NAMES)],
enable_opts='')
assert res == 0
self.check_resops(new_with_vtable=0)
def test_unwanted_loops(self):
mydriver = JitDriver(reds = ['n', 'total', 'm'], greens = [])
def loop1(n):
# the jit should not look here, as there is a loop
res = 0
for i in range(n):
res += i
return res
@unroll_safe
def loop2(n):
# the jit looks here, due to the decorator
for i in range(5):
n += 1
return n
def f(m):
total = 0
n = 0
while n < m:
mydriver.can_enter_jit(n=n, total=total, m=m)
mydriver.jit_merge_point(n=n, total=total, m=m)
total += loop1(n)
n = loop2(n)
return total
self.meta_interp(f, [50])
self.check_enter_count_at_most(2)
def test_wanted_unrolling_and_preinlining(self):
mydriver = JitDriver(reds = ['n', 'm'], greens = [])
@unroll_safe
def loop2(n):
# the jit looks here, due to the decorator
for i in range(5):
n += 1
return n
loop2._always_inline_ = True
def g(n):
return loop2(n)
g._dont_inline_ = True
def f(m):
n = 0
while n < m:
mydriver.can_enter_jit(n=n, m=m)
mydriver.jit_merge_point(n=n, m=m)
n = g(n)
return n
self.meta_interp(f, [50], backendopt=True)
self.check_enter_count_at_most(2)
self.check_resops(call=0)
def test_loop_header(self):
# artificial test: we enter into the JIT only when can_enter_jit()
# is seen, but we close a loop in the JIT much more quickly
# because of loop_header().
mydriver = JitDriver(reds = ['n', 'm'], greens = [])
def f(m):
n = 0
while True:
mydriver.jit_merge_point(n=n, m=m)
if n > m:
m -= 1
if m < 0:
return n
n = 0
mydriver.can_enter_jit(n=n, m=m)
else:
n += 1
mydriver.loop_header()
assert f(15) == 1
res = self.meta_interp(f, [15], backendopt=True)
assert res == 1
self.check_resops(int_add=2) # I get 13 without the loop_header()
def test_omit_can_enter_jit(self):
# Simple test comparing the effects of always giving a can_enter_jit(),
# or not giving any. Mostly equivalent, except that if given, it is
# ignored the first time, and so it ends up taking one extra loop to
# start JITting.
mydriver = JitDriver(greens=[], reds=['m'])
#
for i2 in range(10):
def f2(m):
while m > 0:
mydriver.jit_merge_point(m=m)
m -= 1
self.meta_interp(f2, [i2])
try:
self.check_jitcell_token_count(1)
break
except AssertionError:
print "f2: no loop generated for i2==%d" % i2
else:
raise # re-raise the AssertionError: check_loop_count never 1
#
for i1 in range(10):
def f1(m):
while m > 0:
mydriver.can_enter_jit(m=m)
mydriver.jit_merge_point(m=m)
m -= 1
self.meta_interp(f1, [i1])
try:
self.check_jitcell_token_count(1)
break
except AssertionError:
print "f1: no loop generated for i1==%d" % i1
else:
raise # re-raise the AssertionError: check_loop_count never 1
#
assert i1 - 1 == i2
def test_no_loop_at_all(self):
mydriver = JitDriver(greens=[], reds=['m'])
def f2(m):
mydriver.jit_merge_point(m=m)
return m - 1
def f1(m):
while m > 0:
m = f2(m)
self.meta_interp(f1, [8])
# it should generate one "loop" only, which ends in a FINISH
# corresponding to the return from f2.
self.check_trace_count(1)
self.check_resops(jump=0)
def test_simple_loop(self):
mydriver = JitDriver(greens=[], reds=['m'])
def f1(m):
while m > 0:
mydriver.jit_merge_point(m=m)
m = m - 1
self.meta_interp(f1, [8])
self.check_trace_count(1)
self.check_resops({'jump': 1, 'guard_true': 2, 'int_gt': 2,
'int_sub': 2})
def test_void_red_variable(self):
mydriver = JitDriver(greens=[], reds=['m'])
def f1(m):
a = None
while m > 0:
mydriver.jit_merge_point(m=m)
m = m - 1
if m == 10:
pass # other case
self.meta_interp(f1, [18])
def test_bug_constant_int(self):
py.test.skip("crashes because a is a constant")
from rpython.rtyper.lltypesystem import lltype, rffi
mydriver = JitDriver(greens=['a'], reds=['m'])
def f1(m, a):
while m > 0:
mydriver.jit_merge_point(a=a, m=m)
m = m - 1
def entry(m):
f1(m, 42)
self.meta_interp(entry, [18])
def test_bug_constant_instance(self):
py.test.skip("crashes because a is a constant")
from rpython.rtyper.lltypesystem import lltype, rffi
mydriver = JitDriver(greens=['a'], reds=['m'])
class A(object):
pass
a1 = A()
def f1(m, a):
while m > 0:
mydriver.jit_merge_point(a=a, m=m)
m = m - 1
def entry(m):
f1(m, a1)
self.meta_interp(entry, [18])
def test_bug_constant_rawptrs(self):
py.test.skip("crashes because a is a constant")
from rpython.rtyper.lltypesystem import lltype, rffi
mydriver = JitDriver(greens=['a'], reds=['m'])
def f1(m):
a = lltype.nullptr(rffi.VOIDP.TO)
while m > 0:
mydriver.jit_merge_point(a=a, m=m)
m = m - 1
self.meta_interp(f1, [18])
def test_bug_rawptrs(self):
from rpython.rtyper.lltypesystem import lltype, rffi
mydriver = JitDriver(greens=['a'], reds=['m'])
def f1(m):
a = lltype.malloc(rffi.VOIDP.TO, 5, flavor='raw')
while m > 0:
mydriver.jit_merge_point(a=a, m=m)
m = m - 1
if m == 10:
pass
lltype.free(a, flavor='raw')
self.meta_interp(f1, [18])
def test_loop_automatic_reds(self):
myjitdriver = JitDriver(greens = ['m'], reds = 'auto')
def f(n, m):
res = 0
# try to have lots of red vars, so that if there is an error in
# the ordering of reds, there are low chances that the test passes
# by chance
a = b = c = d = n
while n > 0:
myjitdriver.jit_merge_point(m=m)
n -= 1
a += 1 # dummy unused red
b += 2 # dummy unused red
c += 3 # dummy unused red
d += 4 # dummy unused red
res += m*2
return res
expected = f(21, 5)
res = self.meta_interp(f, [21, 5])
assert res == expected
self.check_resops(int_sub=2, int_mul=0, int_add=10)
def test_loop_automatic_reds_with_floats_and_refs(self):
myjitdriver = JitDriver(greens = ['m'], reds = 'auto')
class MyObj(object):
def __init__(self, val):
self.val = val
def f(n, m):
res = 0
# try to have lots of red vars, so that if there is an error in
# the ordering of reds, there are low chances that the test passes
# by chance
i1 = i2 = i3 = i4 = n
f1 = f2 = f3 = f4 = float(n)
r1 = r2 = r3 = r4 = MyObj(n)
while n > 0:
myjitdriver.jit_merge_point(m=m)
n -= 1
i1 += 1 # dummy unused red
i2 += 2 # dummy unused red
i3 += 3 # dummy unused red
i4 += 4 # dummy unused red
f1 += 1 # dummy unused red
f2 += 2 # dummy unused red
f3 += 3 # dummy unused red
f4 += 4 # dummy unused red
r1.val += 1 # dummy unused red
r2.val += 2 # dummy unused red
r3.val += 3 # dummy unused red
r4.val += 4 # dummy unused red
res += m*2
return res
expected = f(21, 5)
res = self.meta_interp(f, [21, 5])
assert res == expected
self.check_resops(int_sub=2, int_mul=0, int_add=18, float_add=8)
def test_loop_automatic_reds_livevars_before_jit_merge_point(self):
myjitdriver = JitDriver(greens = ['m'], reds = 'auto')
def f(n, m):
res = 0
while n > 0:
n -= 1
myjitdriver.jit_merge_point(m=m)
res += m*2
return res
expected = f(21, 5)
res = self.meta_interp(f, [21, 5])
assert res == expected
self.check_resops(int_sub=2, int_mul=0, int_add=2)
def test_loop_automatic_reds_not_too_many_redvars(self):
myjitdriver = JitDriver(greens = ['m'], reds = 'auto')
def one():
return 1
def f(n, m):
res = 0
while n > 0:
n -= one()
myjitdriver.jit_merge_point(m=m)
res += m*2
return res
expected = f(21, 5)
res = self.meta_interp(f, [21, 5])
assert res == expected
oplabel = get_stats().loops[0].operations[0]
assert len(oplabel.getarglist()) == 2 # 'n', 'res' in some order
def test_inline_jit_merge_point(self):
py.test.skip("fix the test if you want to re-enable this")
# test that the machinery to inline jit_merge_points in callers
# works. The final user does not need to mess manually with the
# _inline_jit_merge_point_ attribute and similar, it is all nicely
# handled by @JitDriver.inline() (see next tests)
myjitdriver = JitDriver(greens = ['a'], reds = 'auto')
def jit_merge_point(a, b):
myjitdriver.jit_merge_point(a=a)
def add(a, b):
jit_merge_point(a, b)
return a+b
add._inline_jit_merge_point_ = jit_merge_point
myjitdriver.inline_jit_merge_point = True
def calc(n):
res = 0
while res < 1000:
res = add(n, res)
return res
def f():
return calc(1) + calc(3)
res = self.meta_interp(f, [])
assert res == 1000 + 1002
self.check_resops(int_add=4)
def test_jitdriver_inline(self):
py.test.skip("fix the test if you want to re-enable this")
myjitdriver = JitDriver(greens = [], reds = 'auto')
class MyRange(object):
def __init__(self, n):
self.cur = 0
self.n = n
def __iter__(self):
return self
def jit_merge_point(self):
myjitdriver.jit_merge_point()
@myjitdriver.inline(jit_merge_point)
def next(self):
if self.cur == self.n:
raise StopIteration
self.cur += 1
return self.cur
def f(n):
res = 0
for i in MyRange(n):
res += i
return res
expected = f(21)
res = self.meta_interp(f, [21])
assert res == expected
self.check_resops(int_eq=2, int_add=4)
self.check_trace_count(1)
def test_jitdriver_inline_twice(self):
py.test.skip("fix the test if you want to re-enable this")
myjitdriver = JitDriver(greens = [], reds = 'auto')
def jit_merge_point(a, b):
myjitdriver.jit_merge_point()
@myjitdriver.inline(jit_merge_point)
def add(a, b):
return a+b
def one(n):
res = 0
while res < 1000:
res = add(n, res)
return res
def two(n):
res = 0
while res < 2000:
res = add(n, res)
return res
def f(n):
return one(n) + two(n)
res = self.meta_interp(f, [1])
assert res == 3000
self.check_resops(int_add=4)
self.check_trace_count(2)
def test_jitdriver_inline_exception(self):
py.test.skip("fix the test if you want to re-enable this")
# this simulates what happens in a real case scenario: inside the next
# we have a call which we cannot inline (e.g. space.next in the case
# of W_InterpIterable), but we need to put it in a try/except block.
# With the first "inline_in_portal" approach, this case crashed
myjitdriver = JitDriver(greens = [], reds = 'auto')
def inc(x, n):
if x == n:
raise OverflowError
return x+1
inc._dont_inline_ = True
class MyRange(object):
def __init__(self, n):
self.cur = 0
self.n = n
def __iter__(self):
return self
def jit_merge_point(self):
myjitdriver.jit_merge_point()
@myjitdriver.inline(jit_merge_point)
def next(self):
try:
self.cur = inc(self.cur, self.n)
except OverflowError:
raise StopIteration
return self.cur
def f(n):
res = 0
for i in MyRange(n):
res += i
return res
expected = f(21)
res = self.meta_interp(f, [21])
assert res == expected
self.check_resops(int_eq=2, int_add=4)
self.check_trace_count(1)
def test_callback_jit_merge_point(self):
@jit_callback("testing")
def callback(a, b):
if a > b:
return 1
return -1
def main():
total = 0
for i in range(10):
total += callback(i, 2)
return total
res = self.meta_interp(main, [])
assert res == 7 - 3
self.check_trace_count(2)
def test_jitdriver_single_jit_merge_point(self):
jitdriver = JitDriver(greens=[], reds='auto')
def g1(n):
jitdriver.jit_merge_point()
return n
def g2():
jitdriver.jit_merge_point()
def f(n):
if n:
g1(n)
else:
g2()
e = py.test.raises(AssertionError, self.meta_interp, f, [42])
assert str(e.value) == ("there are multiple jit_merge_points "
"with the same jitdriver")
class TestWarmspotDirect(object):
def setup_class(cls):
from rpython.jit.metainterp.typesystem import llhelper
from rpython.jit.codewriter.support import annotate
from rpython.jit.metainterp.warmspot import WarmRunnerDesc
from rpython.rtyper.rclass import OBJECT, OBJECT_VTABLE
from rpython.rtyper.lltypesystem import lltype, llmemory
exc_vtable = lltype.malloc(OBJECT_VTABLE, immortal=True)
cls.exc_vtable = exc_vtable
class FakeFailDescr(object):
def __init__(self, no):
self.no = no
def handle_fail(self, deadframe, metainterp_sd, jitdrivers_sd):
no = self.no
assert deadframe._no == no
if no == 0:
raise jitexc.DoneWithThisFrameInt(3)
if no == 1:
raise jitexc.ContinueRunningNormally(
[0], [], [], [1], [], [])
if no == 3:
exc = lltype.malloc(OBJECT)
exc.typeptr = exc_vtable
raise jitexc.ExitFrameWithExceptionRef(
metainterp_sd.cpu,
lltype.cast_opaque_ptr(llmemory.GCREF, exc))
assert 0
class FakeDeadFrame:
def __init__(self, no):
self._no = no
class FakeDescr:
pass
class FakeCPU(object):
supports_floats = False
supports_longlong = False
supports_singlefloats = False
ts = llhelper
translate_support_code = False
stats = "stats"
class tracker:
pass
def setup_descrs(self):
return []
def get_latest_descr(self, deadframe):
assert isinstance(deadframe, FakeDeadFrame)
return self.get_fail_descr_from_number(deadframe._no)
def get_fail_descr_number(self, d):
return -1
def __init__(self, *args, **kwds):
pass
def nodescr(self, *args, **kwds):
return FakeDescr()
fielddescrof = nodescr
calldescrof = nodescr
sizeof = nodescr
def get_fail_descr_from_number(self, no):
return FakeFailDescr(no)
def make_execute_token(self, *ARGS):
return "not callable"
driver = JitDriver(reds = ['red'], greens = ['green'])
def f(green):
red = 0
while red < 10:
driver.can_enter_jit(red=red, green=green)
driver.jit_merge_point(red=red, green=green)
red += 1
return red
rtyper = annotate(f, [0])
FakeCPU.rtyper = rtyper
translator = rtyper.annotator.translator
translator.config.translation.gc = 'hybrid'
cls.desc = WarmRunnerDesc(translator, CPUClass=FakeCPU)
cls.FakeDeadFrame = FakeDeadFrame
def test_call_helper(self):
from rpython.rtyper.llinterp import LLException
[jd] = self.desc.jitdrivers_sd
FakeDeadFrame = self.FakeDeadFrame
assert jd._assembler_call_helper(FakeDeadFrame(0), 0) == 3
assert jd._assembler_call_helper(FakeDeadFrame(1), 0) == 10
try:
jd._assembler_call_helper(FakeDeadFrame(3), 0)
except LLException as lle:
assert lle[0] == self.exc_vtable
else:
py.test.fail("DID NOT RAISE")
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