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
|
// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2024 by Antmicro Ltd.
// SPDX-License-Identifier: CC0-1.0
`define check_rand(cl, field) \
begin \
longint prev_result; \
int ok = 0; \
void'(cl.randomize()); \
prev_result = longint'(field); \
repeat(9) begin \
longint result; \
void'(cl.randomize()); \
result = longint'(field); \
if (result != prev_result) ok = 1; \
prev_result = result; \
end \
if (ok != 1) $stop; \
end
class Boo;
function new();
boo = 6;
endfunction
int unsigned boo;
endclass
class Foo extends Boo;
rand int unsigned a;
rand int unsigned b;
int x;
function new(int x);
this.x = x;
endfunction
constraint constr1_c { b < x; }
function bit test_this_randomize;
return this.randomize() with { a <= boo; } == 1;
endfunction
endclass
// Current AstWith representation makes VARs of caller indistinguishable from VARs of randomized
// object if both the caller and callee are the same module, but different instances.
// That's why for the purpose of this test, the caller derives a different class
class Bar extends Boo;
// Give the local variables a different scope by defining the functino under Bar
static function bit test_local_constrdep(Foo foo, int c);
return foo.randomize() with { a <= c; a > 1; x % a == 0; } == 1;
endfunction
function bit test_capture_of_callers_derived_var(Foo foo);
boo = 4;
foo.a = 3;
return (foo.randomize() with { a == local::boo; } == 1) && (foo.a == 4);
endfunction
static function bit test_capture_of_callees_derived_var(Foo foo);
foo.a = 5;
return (foo.randomize() with { a == boo; } == 1) && (foo.a == 6);
endfunction
static function bit test_capture_of_local_qualifier(Foo foo);
foo.a = 5;
return (foo.randomize() with { a == boo; } == 1) && (foo.a == 6);
endfunction
endclass
class Baz;
rand int v;
endclass
class Baz2;
rand int v;
function bit test_this_randomize;
return this.randomize() with { v == 5; } == 1;
endfunction
endclass
module submodule();
int sub_var = 7;
endmodule
function automatic int return_2();
return 2;
endfunction
class Cls;
rand int a;
rand int b;
endclass
class Cls2 extends Cls;
rand int c;
endclass
module mwith();
submodule sub1();
submodule sub2();
function automatic int return_3();
return 3;
endfunction
initial begin
int c = 30;
Foo foo = new(c);
Baz baz = new;
Baz2 baz2 = new;
Bar bar = new;
Cls2 cls2 = new;
Cls cls = cls2;
$display("foo.x = %d", foo.x);
$display("-----------------");
repeat (20) begin
if (Bar::test_local_constrdep(foo, 5)) begin
$display("foo.a = %d", foo.a);
$display("foo.b = %d", foo.b);
$display("-----------------");
if (!(foo.a inside {2, 3, 5})) $stop;
if (foo.b >= foo.x) $stop;
if (foo.a > c) $stop;
if (foo.a <= 1) $stop;
sub1.sub_var = foo.a;
end else
$display("Failed to randomize foo with inline constraints");
end
if (cls.randomize() with { b == 1;} != 1) $stop;
if (cls.b != 1) $stop;
`check_rand(cls2, cls2.a);
`check_rand(cls2, cls2.c);
// Check randomize as a task
// verilator lint_off IGNOREDRETURN
cls.randomize() with { b == 2;};
// verilator lint_on IGNOREDRETURN
if (cls.b != 2) $stop;
// Check capture of a static variable
if (foo.randomize() with { a > sub1.sub_var; } != 1) $stop;
// Check reference to a function
if (foo.randomize() with { a > return_2(); } != 1) $stop;
// Check randomization of class with no constraints
if (baz.randomize() with { v inside {[2:10]}; } != 1) $stop;
// Check randomization with captured non-static variable from different AstNodeModule
if (!bar.test_capture_of_callers_derived_var(foo)) $stop;
// Check randomization with non-captured non-static variable from different AstNodeModule
if (!Bar::test_capture_of_callees_derived_var(foo)) $stop;
// Check this.randomize()
if (!foo.test_this_randomize()) $stop;
// Check this.randomize() with no constraints
if (!baz2.test_this_randomize()) $stop;
$write("*-* All Finished *-*\n");
$finish();
end
endmodule
|
