branch: master
test_pattern_matcher.py
8703 bytesRaw
import unittest, itertools
from tinygrad.dtype import dtypes
from tinygrad.ops import Ops, UOp, GroupOp # noqa: F401
from tinygrad.ops import PatternMatcher, UPat
class TestPatternMatcher(unittest.TestCase):
def test_simple_match(self):
matcher = PatternMatcher([(UPat(Ops.CONST, name="x", dtype=dtypes.float), lambda x: x)])
c1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
c2 = UOp(Ops.CONST, dtypes.int, arg=1)
self.assertEqual(matcher.rewrite(c1), c1)
self.assertEqual(matcher.rewrite(c2), None)
def test_upat_any(self):
def test(a, x=None, y=None, z=None):
#print(x,y,z)
if y is not None: return a+y
matcher = PatternMatcher([
(UPat.var("a")+UPat.any(UPat.var("x"), UPat.var("y"), UPat.var("z")), test),
])
v1 = UOp.variable("a", 0, 10)
v2 = UOp.variable("b", 0, 10)
c1 = v1+v2
self.assertEqual(matcher.rewrite(c1), c1)
@unittest.skip("closures aren't supported on pattern matchers")
def test_match_sz_0(self):
match_cnt = 0
def fxn(x):
nonlocal match_cnt
match_cnt += 1
assert len(x.src) == 0
return UOp(Ops.CONST, src=(UOp(Ops.CONST),))
matcher = PatternMatcher([(UPat(Ops.CONST, src=(), name="x"), fxn)])
c1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
# second rewrite shouldn't match anything
c1 = matcher.rewrite(c1)
c1 = matcher.rewrite(c1)
self.assertEqual(match_cnt, 1)
def test_match_sz_0_ctx(self):
def fxn(ctx, x):
ctx.append(True)
assert len(x.src) == 0
return UOp(Ops.CONST, src=(UOp(Ops.CONST),))
matcher = PatternMatcher([(UPat(Ops.CONST, src=(), name="x"), fxn)])
c1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
# second rewrite shouldn't match anything
ctx = []
c1 = matcher.rewrite(c1, ctx)
c1 = matcher.rewrite(c1, ctx)
self.assertEqual(len(ctx), 1)
def test_uop(self):
matcher = PatternMatcher([(UPat(Ops.CONST, name="x"), lambda x: x)])
c1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
c2 = UOp(Ops.ADD, dtypes.float, (c1, c1))
self.assertEqual(matcher.rewrite(c1), c1)
self.assertEqual(matcher.rewrite(c2), None)
def test_uop_set(self):
matcher = PatternMatcher([(UPat((Ops.CONST, Ops.CAST), name="x"), lambda x: x)])
c1 = UOp(Ops.CONST, dtypes.bool, arg=False)
c2 = UOp(Ops.CAST, dtypes.int, (c1,))
c3 = UOp(Ops.CONST, dtypes.float, arg=1.0)
c4 = UOp(Ops.ADD, dtypes.float, (c3, c3))
self.assertEqual(matcher.rewrite(c1), c1)
self.assertEqual(matcher.rewrite(c2), c2)
self.assertEqual(matcher.rewrite(c4), None)
def test_arg(self):
matcher = PatternMatcher([
(UPat(Ops.CONST, arg=0, name="x"), lambda x: x),
(UPat(Ops.CONST, arg=False, name="x"), lambda x: x),
(UPat(Ops.MAX, name="x"), lambda x: x),
])
c1 = UOp(Ops.CONST, dtypes.float, arg=0.0)
c2 = UOp(Ops.CONST, dtypes.bool, arg=False)
c3 = UOp(Ops.MAX, dtypes.float, (c1, c1))
c4 = UOp(Ops.MUL, dtypes.float, (c1, c1))
c5 = UOp(Ops.CONST, dtypes.int, arg=-1)
self.assertEqual(matcher.rewrite(c1), c1)
self.assertEqual(matcher.rewrite(c2), c2)
self.assertEqual(matcher.rewrite(c3), c3)
self.assertEqual(matcher.rewrite(c4), None)
self.assertEqual(matcher.rewrite(c5), None)
def test_filter_arg(self):
matcher = PatternMatcher([
(UPat(Ops.MUL, src=[UPat(Ops.CONST, name="c"), UPat(Ops.CONST, arg=2)], name="x"),
lambda x,c: x if c.arg in {1, -1} else None)
])
y1 = UOp(Ops.CONST, dtypes.int, arg=1)
y2 = UOp(Ops.CONST, dtypes.int, arg=2)
y3 = UOp(Ops.CONST, dtypes.int, arg=-1)
c1 = UOp(Ops.MUL, dtypes.int, (y1, y2))
c2 = UOp(Ops.MUL, dtypes.int, (y2, y2))
c3 = UOp(Ops.MUL, dtypes.int, (y3, y2))
c4 = UOp(Ops.MUL, dtypes.int, (y2, y1))
c5 = UOp(Ops.MUL, dtypes.int, (y2, y3))
self.assertEqual(matcher.rewrite(c1), c1)
self.assertEqual(matcher.rewrite(c2), None)
self.assertEqual(matcher.rewrite(c3), c3)
self.assertEqual(matcher.rewrite(c4), c4)
self.assertEqual(matcher.rewrite(c5), c5)
def test_dup_name(self):
matcher = PatternMatcher([(UPat(GroupOp.ALU, name="x", src=(UPat(Ops.CONST, name="y"), UPat(Ops.CONST, name="y"))), lambda x, y: x)])
y1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
y2 = UOp(Ops.CONST, dtypes.float, arg=1.0)
c1 = UOp(Ops.ADD, dtypes.float, (y1, y1))
c2 = UOp(Ops.ADD, dtypes.float, (y1, y2))
self.assertEqual(matcher.rewrite(c1), c1)
self.assertEqual(matcher.rewrite(c2), c1)
def test_dtype(self):
matcher = PatternMatcher([(UPat(Ops.CONST, name="x", dtype=dtypes.float32), lambda x: x)])
c1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
c2 = UOp(Ops.CONST, dtypes.float64, arg=1.0)
self.assertEqual(matcher.rewrite(c1), c1)
self.assertEqual(matcher.rewrite(c2), None)
def test_dtype_set(self):
matcher = PatternMatcher([(UPat(Ops.CONST, name="x", dtype={dtypes.float32, dtypes.float64}), lambda x: x)])
c1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
c2 = UOp(Ops.CONST, dtypes.float64, arg=1.0)
c3 = UOp(Ops.CONST, dtypes.float16, arg=1.0)
c4 = UOp(Ops.CONST, dtypes.int, arg=1)
self.assertEqual(matcher.rewrite(c1), c1)
self.assertEqual(matcher.rewrite(c2), c2)
self.assertEqual(matcher.rewrite(c3), None)
self.assertEqual(matcher.rewrite(c4), None)
def test_src_one(self):
matcher = PatternMatcher([(UPat(GroupOp.ALU, name="x", src=(UPat(Ops.CONST), UPat(Ops.CONST))), lambda x: x)])
c1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
c2 = UOp(Ops.CONST, dtypes.float, arg=2.0)
c3 = UOp(Ops.ADD, dtypes.float, (c1,c2))
self.assertEqual(matcher.rewrite(c3), c3)
self.assertEqual(matcher.rewrite(c2), None)
# that CONST/ALU -> ALU/CONST rewrite is now instant
"""
matcher = PatternMatcher([(UPat(GroupOp.ALU, name="x", src=(UPat(Ops.CONST), UPat(GroupOp.ALU))), lambda x: x)])
c4 = UOp(Ops.ADD, dtypes.float, (c1,c3))
c5 = UOp(Ops.ADD, dtypes.float, (c3,c1))
self.assertEqual(matcher.rewrite(c3), None)
self.assertEqual(matcher.rewrite(c4), c4)
self.assertEqual(matcher.rewrite(c5), None)
"""
def test_src_permutations(self):
matcher = PatternMatcher([(UPat(GroupOp.ALU, name="x", src=[UPat(Ops.CONST), UPat(GroupOp.ALU)]), lambda x: x)])
c1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
c2 = UOp(Ops.CONST, dtypes.float, arg=2.0)
c3 = UOp(Ops.ADD, dtypes.float, (c1,c2))
c4 = UOp(Ops.ADD, dtypes.float, (c3,c2))
c5 = UOp(Ops.ADD, dtypes.float, (c2,c3))
c6 = UOp(Ops.ADD, dtypes.float, (c3,c4))
self.assertEqual(matcher.rewrite(c3), None)
self.assertEqual(matcher.rewrite(c4), c4)
self.assertEqual(matcher.rewrite(c5), c5)
self.assertEqual(matcher.rewrite(c6), None)
def test_src_repeat(self):
matcher = PatternMatcher([(UPat(GroupOp.ALU, name="x", src=UPat(Ops.CONST)), lambda x: x)])
c1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
c2 = UOp(Ops.CONST, dtypes.float, arg=2.0)
c3 = UOp(Ops.ADD, dtypes.float, (c1,c2))
c4 = UOp(Ops.ADD, dtypes.float, (c2,c3))
self.assertEqual(matcher.rewrite(c3), c3)
self.assertEqual(matcher.rewrite(c4), None)
def test_allow_len(self):
matcher = PatternMatcher([(UPat(Ops.MULACC, name="x", src=(UPat(Ops.CONST),), allow_any_len=True), lambda x: x)])
c1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
c2 = UOp(Ops.CONST, dtypes.float, arg=2.0)
c3 = UOp(Ops.CONST, dtypes.float, arg=3.0)
c4 = UOp(Ops.EXP2, dtypes.float, (c1,))
c5 = UOp(Ops.ADD, dtypes.float, (c1,c2))
c6 = UOp(Ops.MULACC, dtypes.float, (c1,c2,c3))
self.assertEqual(matcher.rewrite(c4), None)
self.assertEqual(matcher.rewrite(c5), None)
self.assertEqual(matcher.rewrite(c6), c6)
def test_deep_src_permutations(self):
c1 = UOp(Ops.CONST, dtypes.float, arg=1.0)
c2 = UOp(Ops.CONST, dtypes.float, arg=2.0)
u1 = (c1 + c2) + c1
u2 = (c2 + c1) + c1
matcher = PatternMatcher([
(UPat(GroupOp.ALU, src=[UPat(GroupOp.ALU, src=[UPat(name='a'), UPat(name='b')]), UPat(name='b')]), lambda a,b: b)
])
self.assertIsNotNone(matcher.rewrite(u1))
self.assertIsNotNone(matcher.rewrite(u2))
def _assert_eq_upat(self, a:UPat, b:UPat):
assert (sorted(map(str,a.op)) if a.op else [] == (sorted(map(str,b.op)) if b.op else []))
assert (sorted(a.dtype) if a.dtype else [] == (sorted(b.dtype) if b.dtype else []))
assert (a.name, type(a.src)) == (b.name, type(b.src))
def simple_src(u:UPat):
if u.src is None: return []
if isinstance(u.src, itertools.repeat): return next(u.src[0])
return u.src[0]
for a,b in zip(simple_src(a), simple_src(b)): self._assert_eq_upat(a, b)
if __name__ == '__main__':
unittest.main(verbosity=2)