/
vm_smm_test.go
150 lines (131 loc) · 4.69 KB
/
vm_smm_test.go
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
package stackvm_test
import (
"testing"
. "github.com/jcorbin/stackvm/x"
)
// Test solving the following cryptarithmetic problem:
//
// S E N D
// + M O R E
// -----------
// M O N E Y
//
// For keep the program "simpler", and to sufficiently exercise the vm, a
// simplistic right-to-left or "bottom up" solution strategy is used.
//
// TODO: test solving other solution strategies, including even a more naive
// brute force.
//
// TODO: good way to test any higher level construct, like a forth or even just
// a compiler, would be the case of building the program section for each column.
var smmLib = []interface{}{
".data",
".out", "used:", 0,
".text",
"choose:", // &$X : retIp
0, "push", ":chooseLoop", "jump", // &$X i=0 : retIp
"chooseNext:", 1, "add", // &$X i++ : retIp
"chooseLoop:", // &$X i : retIp
"dup", 9, "lt", ":chooseNext", "fnz", // &$X i : retIp -- fork next if i < 9
"dup", 2, "swap", "storeTo", // $X=i : retIp
"dup", // $X $X : retIP -- dup as arg for fallsthrough to markUsed
"markUsed:", // $X : retIp
":used", "bitseta", // !used[$x] : retIp -- set used[$X] if it wasn't
2, "hz", // : retIp
"ret", // :
}
var smmTest = TestCase{
Name: "send more money (bottom up)",
Prog: []interface{}{
// s e n d
// + m o r e
// -----------
// m o n e y
".include", smmLib,
".data",
".out", "values:", ".alloc", 8,
// 0 1 2 3 4 5 6 7
// d e y n r o s m
".entry",
//// d + e = y (mod 10)
".spanOpen", "col_dey:", // :
4 * 0, ":values", "push", ":choose", "call", // $d :
4 * 1, ":values", "push", ":choose", "call", // $d $e :
".spanOpen", "compute_y_de:", // $d $e :
"add", "dup", // $d+e $d+e :
10, "mod", // $d+e ($d+e)%10 :
"dup", 4 * 2, ":values", "storeTo", // $d+e $y : -- $y=($d+e)%10
":markUsed", "call", // $d+e :
".spanClose", ".spanClose", 10, "div", // carry :
//// carry + n + r = e (mod 10)
".spanOpen", "col_nre:", // carry :
"dup", // carry carry :
4 * 1, ":values", "fetch", // carry carry $e :
"swap", // carry $e carry :
4 * 3, ":values", "push", ":choose", "call", // carry $e carry $n :
".spanOpen", "compute_r_en:", // carry $e carry $n :
"add", "sub", 10, "mod", // carry ($e-(carry+$n))%10 :
"dup", 4 * 4, ":values", "storeTo", // carry $r : -- $r=($e-(carry+$n))%10
":markUsed", "call", // carry :
4 * 3, ":values", "fetch", // carry $n :
4 * 4, ":values", "fetch", // carry $n $r :
"add", "add", // carry+$n+$r :
".spanClose", ".spanClose", 10, "div", // carry :
//// carry + e + o = n (mod 10)
".spanOpen", "col_eon:", // carry :
"dup", // carry carry :
4 * 1, ":values", "fetch", // carry carry $e :
"add", // carry carry+$e :
4 * 3, ":values", "fetch", // carry carry+$e $n :
".spanOpen", "compute_o_en:", // carry carry+$e $n :
"swap", "sub", // carry $n-(carry+$e) :
10, "mod", // carry ($n-(carry+$e))%10 :
"dup", 4 * 5, ":values", "storeTo", // carry $o : -- $o=($n-(carry+$e))%10
":markUsed", "call", // carry :
4 * 1, ":values", "fetch", // carry $e :
4 * 5, ":values", "fetch", // carry $e $o :
"add", "add", // carry+$e+$o :
".spanClose", ".spanClose", 10, "div", // carry :
//// carry + s + m = o (mod 10)
".spanOpen", "col_smo:", // carry :
"dup", // carry carry :
4 * 6, ":values", "push", ":choose", "call", // carry carry $s :
"add", // carry carry+$s :
4 * 5, ":values", "fetch", // carry carry+$s $o :
".spanOpen", "compute_m_so:", // carry carry+$s $o :
"swap", "sub", // carry $o-(carry+$s) :
10, "mod", // carry ($o-(carry+$s))%10 :
"dup", 4 * 7, ":values", "storeTo", // carry $m : -- $m=($o-(carry+$s))%10
":markUsed", "call", // carry :
4 * 6, ":values", "fetch", // carry $s :
"dup", 1, "hz", // carry $s : -- guard $s != 0
4 * 7, ":values", "fetch", // carry $s $m :
"dup", 1, "hz", // carry $s $m : -- guard $m != 0
"add", "add", // carry+$s+$m :
".spanClose", ".spanClose", 10, "div", // carry :
//// carry = m (mod 10)
".spanOpen", "col___m:",
".spanOpen", "check_m:",
4 * 7, ":values", "fetch", // carry $m
"eq",
".spanClose", ".spanClose", 3, "hz",
//// Done
0, "halt",
"crash",
},
Result: Result{Values: map[string][]uint32{
"used": {1<<7 | 1<<5 | 1<<2 | 1<<6 | 1<<8 | 1<<0 | 1<<9 | 1<<1},
"values": {
7, // d
5, // e
2, // y
6, // n
8, // r
0, // o
9, // s
1, // m
},
}}.WithExpectedHaltCodes(1, 2, 3),
}
func TestMach_send_more_money(t *testing.T) { smmTest.Run(t) }
func BenchmarkMach_send_more_money(b *testing.B) { smmTest.Bench(b) }