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import py, sys
from pypy.module.pypyjit.test_pypy_c.test_00_model import BaseTestPyPyC
class TestArray(BaseTestPyPyC):
def test_arraycopy_disappears(self):
def main(n):
i = 0
while i < n:
t = (1, 2, 3, i + 1)
t2 = t[:]
del t
i = t2[3]
del t2
return i
#
log = self.run(main, [500])
assert log.result == 500
loop, = log.loops_by_filename(self.filepath)
assert loop.match("""
i7 = int_lt(i5, i6)
guard_true(i7, descr=...)
i9 = int_add(i5, 1)
--TICK--
jump(..., descr=...)
""")
def test_array_sum(self):
def main():
from array import array
img = array("i", list(range(128)) * 5) * 480
l, i = 0, 0
while i < len(img):
l += img[i]
i += 1
return l
#
log = self.run(main, [])
assert log.result == 19507200
loop, = log.loops_by_filename(self.filepath)
assert loop.match("""
guard_not_invalidated?
i13 = int_lt(i7, i9)
guard_true(i13, descr=...)
i15 = getarrayitem_raw_i(i10, i7, descr=<ArrayS .>)
i16 = int_add_ovf(i8, i15)
guard_no_overflow(descr=...)
i18 = int_add(i7, 1)
--TICK--
jump(..., descr=...)
""")
def test_array_intimg(self):
def main():
from array import array
img = array('i', range(3)) * (350 * 480)
intimg = array('i', (0,)) * (640 * 480)
l, i = 0, 640
while i < 640 * 480:
assert len(img) == 3*350*480
assert len(intimg) == 640*480
l = l + img[i]
intimg[i] = (intimg[i-640] + l)
i += 1
return intimg[i - 1]
#
log = self.run(main, [])
assert log.result == 73574560
loop, = log.loops_by_filename(self.filepath)
if sys.maxint == 2 ** 31 - 1:
assert loop.match("""
i13 = int_lt(i8, 307200)
guard_true(i13, descr=...)
guard_not_invalidated(descr=...)
# the bound check guard on img has been killed (thanks to the asserts)
i14 = getarrayitem_raw_i(i10, i8, descr=<ArrayS .>)
i15 = int_add_ovf(i9, i14)
guard_no_overflow(descr=...)
i17 = int_sub(i8, 640)
# the bound check guard on intimg has been killed (thanks to the asserts)
i18 = getarrayitem_raw_i(i11, i17, descr=<ArrayS .>)
i19 = int_add_ovf(i18, i15)
guard_no_overflow(descr=...)
setarrayitem_raw(i11, i8, _, descr=<ArrayS .>)
i28 = int_add(i8, 1)
--TICK--
jump(..., descr=...)
""")
elif sys.maxint == 2 ** 63 - 1:
assert loop.match("""
i13 = int_lt(i8, 307200)
guard_true(i13, descr=...)
guard_not_invalidated(descr=...)
# the bound check guard on img has been killed (thanks to the asserts)
i14 = getarrayitem_raw_i(i10, i8, descr=<ArrayS .>)
# advanced: the following int_add cannot overflow, because:
# - i14 fits inside 32 bits
# - i9 fits inside 33 bits, because:
# - it comes from the previous iteration's i15
# - prev i19 = prev i18 + prev i15
# - prev i18 fits inside 32 bits
# - prev i19 is guarded to fit inside 32 bits
# - so as a consequence, prev i15 fits inside 33 bits
# the new i15 thus fits inside "33.5" bits, which is enough to
# guarantee that the next int_add(i18, i15) cannot overflow either...
i15 = int_add(i9, i14)
i17 = int_sub(i8, 640)
# the bound check guard on intimg has been killed (thanks to the asserts)
i18 = getarrayitem_raw_i(i11, i17, descr=<ArrayS .>)
i19 = int_add(i18, i15)
# guard checking that i19 actually fits into 32bit
i20 = int_signext(i19, 4)
i65 = int_ne(i20, i19)
guard_false(i65, descr=...)
setarrayitem_raw(i11, i8, _, descr=<ArrayS .>)
i28 = int_add(i8, 1)
--TICK--
jump(..., descr=...)
""")
def test_array_of_doubles(self):
def main():
from array import array
img = array('d', [21.5]*1000)
i = 0
while i < 1000:
img[i] += 20.5
assert img[i] == 42.0
i += 1
return 123
#
log = self.run(main, [])
assert log.result == 123
loop, = log.loops_by_filename(self.filepath)
assert loop.match("""
i10 = int_lt(i6, 1000)
guard_true(i10, descr=...)
i11 = int_lt(i6, i7)
guard_true(i11, descr=...)
f13 = getarrayitem_raw_f(i8, i6, descr=<ArrayF 8>)
f15 = float_add(f13, 20.500000)
setarrayitem_raw(i8, i6, f15, descr=<ArrayF 8>)
f16 = getarrayitem_raw_f(i8, i6, descr=<ArrayF 8>)
i18 = float_eq(f16, 42.000000)
guard_true(i18, descr=...)
i20 = int_add(i6, 1)
--TICK--
jump(..., descr=...)
""", ignore_ops=['guard_not_invalidated'])
def test_array_of_floats(self):
try:
from __pypy__ import jit_backend_features
if 'singlefloats' not in jit_backend_features:
py.test.skip("test requres singlefloats support from the JIT backend")
except ImportError:
pass
def main():
from array import array
img = array('f', [21.5]*1000)
i = 0
while i < 1000:
img[i] += 20.5
assert img[i] == 42.0
i += 1
return 321
#
log = self.run(main, [])
assert log.result == 321
loop, = log.loops_by_filename(self.filepath)
assert loop.match("""
i10 = int_lt(i6, 1000)
guard_true(i10, descr=...)
i11 = int_lt(i6, i7)
guard_true(i11, descr=...)
i13 = getarrayitem_raw_i(i8, i6, descr=<Array. 4>)
f14 = cast_singlefloat_to_float(i13)
f16 = float_add(f14, 20.500000)
i17 = cast_float_to_singlefloat(f16)
setarrayitem_raw(i8, i6,i17, descr=<Array. 4>)
i18 = getarrayitem_raw_i(i8, i6, descr=<Array. 4>)
f19 = cast_singlefloat_to_float(i18)
i21 = float_eq(f19, 42.000000)
guard_true(i21, descr=...)
i23 = int_add(i6, 1)
--TICK--
jump(..., descr=...)
""", ignore_ops=['guard_not_invalidated'])
def test_zeropadded(self):
def main():
from array import array
class ZeroPadded(array):
def __new__(cls, l):
self = array.__new__(cls, 'd', range(l))
return self
def __getitem__(self, i):
if i < 0 or i >= len(self):
return 0
return array.__getitem__(self, i) # ID: get
#
buf = ZeroPadded(2000)
i = 10
sa = 0
while i < 2000 - 10:
sa += buf[i-2] + buf[i-1] + buf[i] + buf[i+1] + buf[i+2]
i += 1
return sa
log = self.run(main, [])
assert log.result == 9895050.0
loop, = log.loops_by_filename(self.filepath)
#
# check that the overloaded __getitem__ does not introduce double
# array bound checks.
#
# The force_token()s are still there, but will be eliminated by the
# backend regalloc, so they are harmless
assert loop.match(ignore_ops=['force_token'],
expected_src="""
...
i20 = int_ge(i18, i8)
guard_false(i20, descr=...)
f21 = getarrayitem_raw_f(i13, i18, descr=...)
i14 = int_sub(i6, 1)
i15 = int_ge(i14, i8)
guard_false(i15, descr=...)
f23 = getarrayitem_raw_f(i13, i14, descr=...)
f24 = float_add(f21, f23)
f26 = getarrayitem_raw_f(i13, i6, descr=...)
f27 = float_add(f24, f26)
i29 = int_add(i6, 1)
i31 = int_ge(i29, i8)
guard_false(i31, descr=...)
f33 = getarrayitem_raw_f(i13, i29, descr=...)
f34 = float_add(f27, f33)
i36 = int_add(i6, 2)
i38 = int_ge(i36, i8)
guard_false(i38, descr=...)
f39 = getarrayitem_raw_f(i13, i36, descr=...)
...
""")
def test_circular(self):
def main():
from array import array
class Circular(array):
def __new__(cls):
self = array.__new__(cls, 'd', range(256))
return self
def __getitem__(self, i):
assert len(self) == 256
return array.__getitem__(self, i & 255)
#
buf = Circular()
i = 10
sa = 0
while i < 2000 - 10:
sa += buf[i-2] + buf[i-1] + buf[i] + buf[i+1] + buf[i+2]
i += 1
return sa
#
log = self.run(main, [])
assert log.result == 1239690.0
loop, = log.loops_by_filename(self.filepath)
#
# check that the array bound checks are removed
#
# The force_token()s are still there, but will be eliminated by the
# backend regalloc, so they are harmless
assert loop.match(ignore_ops=['force_token'],
expected_src="""
...
i17 = int_and(i14, 255)
f18 = getarrayitem_raw_f(i8, i17, descr=...)
i19s = int_sub_ovf(i6, 1)
guard_no_overflow(descr=...)
i22s = int_and(i19s, 255)
f20 = getarrayitem_raw_f(i8, i22s, descr=...)
f21 = float_add(f18, f20)
f23 = getarrayitem_raw_f(i8, i10, descr=...)
f24 = float_add(f21, f23)
i26 = int_add(i6, 1)
i29 = int_and(i26, 255)
f30 = getarrayitem_raw_f(i8, i29, descr=...)
f31 = float_add(f24, f30)
i33 = int_add(i6, 2)
i36 = int_and(i33, 255)
f37 = getarrayitem_raw_f(i8, i36, descr=...)
...
""")
def test_listcomp_with_and_result_empty_list_is_jitted(self):
def main():
data = [[1.0], [None]] * 100000
res = []
value = 0.0
for d in data:
if d[0] is not None and d[0] <= value:
res.append(d)
return len(res)
log = self.run(main, [])
assert log.result == 0
loop, = log.loops_by_filename(self.filepath) # there is one, that's enough
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