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import pytest
from rpython.rlib.jit import JitDriver
from rpython.jit.metainterp.test.support import LLJitMixin
from rpython.jit.metainterp.blackhole import BlackholeInterpBuilder
from rpython.jit.metainterp.blackhole import BlackholeInterpreter
from rpython.jit.metainterp.blackhole import convert_and_run_from_pyjitpl
from rpython.jit.metainterp import history, pyjitpl, jitexc, resoperation
from rpython.jit.codewriter.assembler import JitCode
from rpython.rtyper.lltypesystem import lltype, llmemory
from rpython.rtyper.llinterp import LLException
class FakeCodeWriter:
pass
class FakeAssembler:
pass
class FakeCPU:
def bh_call_i(self, func, args_i, args_r, args_f, calldescr):
assert func == 321
assert calldescr == "<calldescr>"
if args_i[0] < 0:
raise LLException("etype", "evalue")
return args_i[0] * 2
def getblackholeinterp(insns, descrs=[]):
cw = FakeCodeWriter()
cw.cpu = FakeCPU()
cw.assembler = FakeAssembler()
cw.assembler.insns = insns
cw.assembler.descrs = descrs
builder = BlackholeInterpBuilder(cw)
return builder.acquire_interp()
def test_simple():
jitcode = JitCode("test")
jitcode.setup("\x00\x00\x01\x02"
"\x01\x02",
[])
blackholeinterp = getblackholeinterp({'int_add/ii>i': 0,
'int_return/i': 1})
blackholeinterp.setposition(jitcode, 0)
blackholeinterp.setarg_i(0, 40)
blackholeinterp.setarg_i(1, 2)
blackholeinterp.run()
assert blackholeinterp._final_result_anytype() == 42
def test_simple_const():
jitcode = JitCode("test")
jitcode.setup("\x00\x30\x01\x02"
"\x01\x02",
[])
blackholeinterp = getblackholeinterp({'int_sub/ci>i': 0,
'int_return/i': 1})
blackholeinterp.setposition(jitcode, 0)
blackholeinterp.setarg_i(1, 6)
blackholeinterp.run()
assert blackholeinterp._final_result_anytype() == 42
def test_simple_bigconst():
jitcode = JitCode("test")
jitcode.setup("\x00\x05\x01\x02"
"\x01\x02",
[666, 666, 10042, 666],
num_regs_i=3)
blackholeinterp = getblackholeinterp({'int_sub/ii>i': 0,
'int_return/i': 1})
blackholeinterp.setposition(jitcode, 0)
blackholeinterp.setarg_i(1, 10000)
blackholeinterp.run()
assert blackholeinterp._final_result_anytype() == 42
def test_simple_loop():
jitcode = JitCode("test")
jitcode.setup("\x00\x16\x02\x10\x00" # L1: goto_if_not_int_gt %i0, 2, L2
"\x01\x17\x16\x17" # int_add %i1, %i0, %i1
"\x02\x16\x01\x16" # int_sub %i0, $1, %i0
"\x03\x00\x00" # goto L1
"\x04\x17", # L2: int_return %i1
[])
blackholeinterp = getblackholeinterp({'goto_if_not_int_gt/icL': 0,
'int_add/ii>i': 1,
'int_sub/ic>i': 2,
'goto/L': 3,
'int_return/i': 4})
blackholeinterp.setposition(jitcode, 0)
blackholeinterp.setarg_i(0x16, 6) # %i0
blackholeinterp.setarg_i(0x17, 100) # %i1
blackholeinterp.run()
assert blackholeinterp._final_result_anytype() == 100+6+5+4+3
def test_simple_exception():
jitcode = JitCode("test")
jitcode.setup( # residual_call_ir_i $<* fn g>, I[%i9], R[], <Descr> %i8
"\x01\xFF\x01\x09\x00\x00\x00\x08"
"\x00\x0D\x00" # catch_exception L1
"\x02\x08" # int_return %i8
"\x03\x2A", # L1: int_return $42
[321]) # <-- address of the function g
blackholeinterp = getblackholeinterp({'catch_exception/L': 0,
'residual_call_ir_i/iIRd>i': 1,
'int_return/i': 2,
'int_return/c': 3},
["<calldescr>"])
#
blackholeinterp.setposition(jitcode, 0)
blackholeinterp.setarg_i(0x9, 100)
blackholeinterp.run()
assert blackholeinterp._final_result_anytype() == 200
#
blackholeinterp.setposition(jitcode, 0)
blackholeinterp.setarg_i(0x9, -100)
blackholeinterp.run()
assert blackholeinterp._final_result_anytype() == 42
def test_convert_and_run_from_pyjitpl():
class MyMIFrame:
jitcode = JitCode("test")
jitcode.setup("\xFF" # illegal instruction
"\x00\x00\x01\x02" # int_add/ii>i
"\x01\x02", # int_return/i
[],
num_regs_i=3, num_regs_r=0, num_regs_f=0)
jitcode.jitdriver_sd = "foo" # not none
pc = 1
registers_i = [resoperation.InputArgInt(40), history.ConstInt(2), None]
class MyMetaInterp:
class staticdata:
result_type = 'int'
class profiler:
@staticmethod
def start_blackhole(): pass
@staticmethod
def end_blackhole(): pass
last_exc_value = None
framestack = [MyMIFrame()]
MyMetaInterp.staticdata.blackholeinterpbuilder = getblackholeinterp(
{'int_add/ii>i': 0, 'int_return/i': 1}).builder
MyMetaInterp.staticdata.blackholeinterpbuilder.metainterp_sd = \
MyMetaInterp.staticdata
#
d = pytest.raises(jitexc.DoneWithThisFrameInt,
convert_and_run_from_pyjitpl, MyMetaInterp())
assert d.value.result == 42
class TestBlackhole(LLJitMixin):
@pytest.mark.xfail
def test_blackholeinterp_cache_basic(self):
class FakeJitcode:
def num_regs_r(self):
return 0
interp1 = getblackholeinterp({})
interp1.jitcode = FakeJitcode()
builder = interp1.builder
interp2 = builder.acquire_interp()
builder.release_interp(interp1)
interp3 = builder.acquire_interp()
assert builder.num_interpreters == 2
@pytest.mark.xfail
def test_blackholeinterp_cache_normal(self):
myjitdriver = JitDriver(greens = [], reds = ['x', 'y'])
def choices(x):
if x == 0: # <- this is the test that eventually succeeds,
return 0 # requiring a blackhole interp in a call stack
return 34871 # of two functions (hence num_interpreters==2)
def f(x):
y = 0
cont = 1
while cont:
myjitdriver.can_enter_jit(x=x, y=y)
myjitdriver.jit_merge_point(x=x, y=y)
cont = choices(x)
y += cont
x -= 1
return y
#
seen = []
def my_copy_constants(self, *args):
seen.append(1)
return org_copy_constants(self, *args)
org_copy_constants = BlackholeInterpreter.copy_constants
BlackholeInterpreter.copy_constants = my_copy_constants
try:
res = self.meta_interp(f, [7], repeat=7)
finally:
BlackholeInterpreter.copy_constants = org_copy_constants
#
assert res == sum([choices(x) for x in range(1, 8)])
builder = pyjitpl._warmrunnerdesc.metainterp_sd.blackholeinterpbuilder
assert builder.num_interpreters == 2
assert len(seen) == 2 * 3
@pytest.mark.xfail
def test_blackholeinterp_cache_exc(self):
myjitdriver = JitDriver(greens = [], reds = ['x', 'y'])
class FooError(Exception):
def __init__(self, num):
self.num = num
def choices(x):
if x == 0:
raise FooError(0)
raise FooError(34871)
def f(x):
y = 0
while True:
myjitdriver.can_enter_jit(x=x, y=y)
myjitdriver.jit_merge_point(x=x, y=y)
try:
choices(x)
except FooError as e:
if e.num == 0:
break
y += e.num
x -= 1
return y
res = self.meta_interp(f, [7], repeat=7)
assert res == sum([pytest.raises(FooError, choices, x).value.num
for x in range(1, 8)])
builder = pyjitpl._warmrunnerdesc.metainterp_sd.blackholeinterpbuilder
assert builder.num_interpreters == 2
def test_bad_shift():
pytest.raises(ValueError, BlackholeInterpreter.bhimpl_int_lshift.im_func, 7, 100)
pytest.raises(ValueError, BlackholeInterpreter.bhimpl_int_rshift.im_func, 7, 100)
pytest.raises(ValueError, BlackholeInterpreter.bhimpl_uint_rshift.im_func, 7, 100)
pytest.raises(ValueError, BlackholeInterpreter.bhimpl_int_lshift.im_func, 7, -1)
pytest.raises(ValueError, BlackholeInterpreter.bhimpl_int_rshift.im_func, 7, -1)
pytest.raises(ValueError, BlackholeInterpreter.bhimpl_uint_rshift.im_func, 7, -1)
assert BlackholeInterpreter.bhimpl_int_lshift.im_func(100, 3) == 100<<3
assert BlackholeInterpreter.bhimpl_int_rshift.im_func(100, 3) == 100>>3
assert BlackholeInterpreter.bhimpl_uint_rshift.im_func(100, 3) == 100>>3
def test_debug_fatalerror():
from rpython.rtyper.lltypesystem import lltype, llmemory, rstr
from rpython.rtyper.llinterp import LLFatalError
msg = rstr.mallocstr(1)
msg.chars[0] = "!"
msg = lltype.cast_opaque_ptr(llmemory.GCREF, msg)
e = pytest.raises(LLFatalError,
BlackholeInterpreter.bhimpl_debug_fatalerror.im_func,
msg)
assert str(e.value) == '!'
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