1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
"""Tests for multiple JitDrivers."""
import py
from rpython.rlib.jit import JitDriver, unroll_safe, set_param
from rpython.jit.metainterp.test.support import LLJitMixin
from rpython.jit.metainterp.warmspot import get_stats
def getloc1():
return "in jitdriver1"
def getloc2(g):
return "in jitdriver2, with g=%d" % g
class MultipleJitDriversTests(object):
def test_simple(self):
myjitdriver1 = JitDriver(greens=[], reds=['n', 'm'],
get_printable_location = getloc1)
myjitdriver2 = JitDriver(greens=['g'], reds=['r'],
get_printable_location = getloc2)
#
def loop1(n, m):
while n > 0:
myjitdriver1.can_enter_jit(n=n, m=m)
myjitdriver1.jit_merge_point(n=n, m=m)
n -= m
return n
#
def loop2(g, r):
while r > 0:
myjitdriver2.can_enter_jit(g=g, r=r)
myjitdriver2.jit_merge_point(g=g, r=r)
r += loop1(r, g) + (-1)
return r
#
res = self.meta_interp(loop2, [4, 40], repeat=7, inline=True)
assert res == loop2(4, 40)
# we expect only one int_sub, corresponding to the single
# compiled instance of loop1()
self.check_resops(int_sub=2)
# the following numbers are not really expectations of the test
# itself, but just the numbers that we got after looking carefully
# at the generated machine code
self.check_trace_count(5)
self.check_jitcell_token_count(2) # 2 x loop including enter bridge
self.check_target_token_count(4) # 2 x loop, 2 x enter bridge
self.check_enter_count(5)
def test_inline(self):
# this is not an example of reasonable code: loop1() is unrolled
# 'n/m' times, where n and m are given as red arguments.
myjitdriver1 = JitDriver(greens=[], reds=['n', 'm'],
get_printable_location = getloc1)
myjitdriver2 = JitDriver(greens=['g'], reds=['r'],
get_printable_location = getloc2)
#
def loop1(n, m):
while n > 0:
if n > 1000:
myjitdriver1.can_enter_jit(n=n, m=m)
myjitdriver1.jit_merge_point(n=n, m=m)
n -= m
return n
#
def loop2(g, r):
set_param(None, 'function_threshold', 0)
while r > 0:
myjitdriver2.can_enter_jit(g=g, r=r)
myjitdriver2.jit_merge_point(g=g, r=r)
r += loop1(r, g) - 1
return r
#
res = self.meta_interp(loop2, [4, 40], repeat=7, inline=True)
assert res == loop2(4, 40)
# we expect no loop at all for 'loop1': it should always be inlined
# we do however get several version of 'loop2', all of which contains
# at least one int_add, while there are no int_add's in 'loop1'
self.check_jitcell_token_count(1)
for loop in get_stats().loops:
assert loop.summary()['int_add'] >= 1
def test_inactive_jitdriver(self):
myjitdriver1 = JitDriver(greens=[], reds=['n', 'm'],
get_printable_location = getloc1)
myjitdriver2 = JitDriver(greens=['g'], reds=['r'],
get_printable_location = getloc2)
#
myjitdriver1.active = False # <===
#
def loop1(n, m):
while n > 0:
myjitdriver1.can_enter_jit(n=n, m=m)
myjitdriver1.jit_merge_point(n=n, m=m)
n -= m
return n
#
def loop2(g, r):
while r > 0:
myjitdriver2.can_enter_jit(g=g, r=r)
myjitdriver2.jit_merge_point(g=g, r=r)
r += loop1(r, g) + (-1)
return r
#
res = self.meta_interp(loop2, [4, 40], repeat=7, inline=True)
assert res == loop2(4, 40)
# we expect no int_sub, but a residual call
self.check_resops(call_i=2, int_sub=0)
def test_multiple_jits_trace_too_long(self):
myjitdriver1 = JitDriver(greens=["n"], reds=["i", "box"])
myjitdriver2 = JitDriver(greens=["n"], reds=["i"])
class IntBox(object):
def __init__(self, val):
self.val = val
def loop1(n):
i = 0
box = IntBox(10)
while i < n:
myjitdriver1.can_enter_jit(n=n, i=i, box=box)
myjitdriver1.jit_merge_point(n=n, i=i, box=box)
i += 1
loop2(box)
return i
def loop2(n):
i = 0
f(10)
while i < n.val:
myjitdriver2.can_enter_jit(n=n, i=i)
myjitdriver2.jit_merge_point(n=n, i=i)
i += 1
@unroll_safe
def f(n):
i = 0
while i < n:
i += 1
res = self.meta_interp(loop1, [10], inline=True, trace_limit=6)
assert res == 10
stats = get_stats()
assert stats.aborted_keys == [None, None]
def test_inline_across_languages(self):
py.test.skip("why does this not work")
driver_weird = JitDriver(
greens = ["pc", "bc"],
reds = ["acc", "x", "y", "z"])
def interp1(bc, x, y, z):
pc = 0
acc = 0
while True:
driver_weird.jit_merge_point(bc=bc, pc=pc, acc=acc, x=x, y=y, z=z)
op = ord(bc[pc])
pc += 1
if op == 0:
acc += x
if op == 1:
acc += y
if op == 2:
acc *= z
if op == 3:
pc = 0
if pc >= len(bc):
break
return acc
driver = JitDriver(
greens = ["substract"],
reds = ["x"],
)
def interp2(x):
substract = interp1('\x00', 0, 0, 0)
while True:
driver.jit_merge_point(substract=substract, x=x)
substract += 1
if x < 0:
break
if substract == 10:
# computes x + 1 * (-1)
x = interp1('\x01\x02\x00', x, 1, -1)
substract = 0
interp2(100)
self.meta_interp(interp2, [100], listcomp=True, backendopt=True,
listops=True, inline=True)
self.check_resops(call_assembler=0)
def test_get_unique_id(self):
def get_unique_id(pc):
return pc + 1
driver = JitDriver(greens=["pc"], reds='auto',
get_unique_id=get_unique_id, is_recursive=True)
def f(arg):
i = 0
pc = 0
while i < 30 and pc < 3:
driver.jit_merge_point(pc=pc)
pc += 1
if arg == 0 and pc == 3:
pc = 0
if arg == 0:
f(1)
i += 1
self.meta_interp(f, [0], inline=True)
loop = get_stats().loops[1]
for op in loop.operations:
if op.getopname() == 'enter_portal_frame':
assert op.getarg(0).getint() == 0
assert op.getarg(1).getint() == 1
def test_manual_leave_enter_portal_frame(self):
from rpython.rlib import jit
driver = JitDriver(greens=[], reds='auto', is_recursive=True)
def f(arg):
i = 0
while i < 100:
driver.jit_merge_point()
jit.enter_portal_frame(42)
jit.leave_portal_frame()
i += 1
self.meta_interp(f, [0])
self.check_simple_loop(enter_portal_frame=1, leave_portal_frame=1)
class TestLLtype(MultipleJitDriversTests, LLJitMixin):
pass
|
