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
|
// run
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// This file tests the splitting of constants into
// multiple immediates on arm.
package main
import "fmt"
const c32a = 0x00aa00dd
const c32s = 0x00ffff00
const c64a = 0x00aa00dd55000066
const c64s = 0x00ffff00004fff00
//go:noinline
func add32a(x uint32) uint32 {
return x + c32a
}
//go:noinline
func add32s(x uint32) uint32 {
return x + c32s
}
//go:noinline
func sub32a(x uint32) uint32 {
return x - c32a
}
//go:noinline
func sub32s(x uint32) uint32 {
return x - c32s
}
//go:noinline
func or32(x uint32) uint32 {
return x | c32a
}
//go:noinline
func xor32(x uint32) uint32 {
return x ^ c32a
}
//go:noinline
func subr32a(x uint32) uint32 {
return c32a - x
}
//go:noinline
func subr32s(x uint32) uint32 {
return c32s - x
}
//go:noinline
func bic32(x uint32) uint32 {
return x &^ c32a
}
//go:noinline
func add64a(x uint64) uint64 {
return x + c64a
}
//go:noinline
func add64s(x uint64) uint64 {
return x + c64s
}
//go:noinline
func sub64a(x uint64) uint64 {
return x - c64a
}
//go:noinline
func sub64s(x uint64) uint64 {
return x - c64s
}
//go:noinline
func or64(x uint64) uint64 {
return x | c64a
}
//go:noinline
func xor64(x uint64) uint64 {
return x ^ c64a
}
//go:noinline
func subr64a(x uint64) uint64 {
return c64a - x
}
//go:noinline
func subr64s(x uint64) uint64 {
return c64s - x
}
//go:noinline
func bic64(x uint64) uint64 {
return x &^ c64a
}
// Note: x-c gets rewritten to x+(-c), so SUB and SBC are not directly testable.
// I disabled that rewrite rule before running this test.
func main() {
test32()
test64()
}
func test32() {
var a uint32 = 0x11111111
var want, got uint32
if want, got = a+c32a, add32a(a); got != want {
panic(fmt.Sprintf("add32a(%x) = %x, want %x", a, got, want))
}
if want, got = a+c32s, add32s(a); got != want {
panic(fmt.Sprintf("add32s(%x) = %x, want %x", a, got, want))
}
if want, got = a-c32a, sub32a(a); got != want {
panic(fmt.Sprintf("sub32a(%x) = %x, want %x", a, got, want))
}
if want, got = a-c32s, sub32s(a); got != want {
panic(fmt.Sprintf("sub32s(%x) = %x, want %x", a, got, want))
}
if want, got = a|c32a, or32(a); got != want {
panic(fmt.Sprintf("or32(%x) = %x, want %x", a, got, want))
}
if want, got = a^c32a, xor32(a); got != want {
panic(fmt.Sprintf("xor32(%x) = %x, want %x", a, got, want))
}
if want, got = c32a-a, subr32a(a); got != want {
panic(fmt.Sprintf("subr32a(%x) = %x, want %x", a, got, want))
}
if want, got = c32s-a, subr32s(a); got != want {
panic(fmt.Sprintf("subr32s(%x) = %x, want %x", a, got, want))
}
if want, got = a&^c32a, bic32(a); got != want {
panic(fmt.Sprintf("bic32(%x) = %x, want %x", a, got, want))
}
}
func test64() {
var a uint64 = 0x1111111111111111
var want, got uint64
if want, got = a+c64a, add64a(a); got != want {
panic(fmt.Sprintf("add64a(%x) = %x, want %x", a, got, want))
}
if want, got = a+c64s, add64s(a); got != want {
panic(fmt.Sprintf("add64s(%x) = %x, want %x", a, got, want))
}
if want, got = a-c64a, sub64a(a); got != want {
panic(fmt.Sprintf("sub64a(%x) = %x, want %x", a, got, want))
}
if want, got = a-c64s, sub64s(a); got != want {
panic(fmt.Sprintf("sub64s(%x) = %x, want %x", a, got, want))
}
if want, got = a|c64a, or64(a); got != want {
panic(fmt.Sprintf("or64(%x) = %x, want %x", a, got, want))
}
if want, got = a^c64a, xor64(a); got != want {
panic(fmt.Sprintf("xor64(%x) = %x, want %x", a, got, want))
}
if want, got = c64a-a, subr64a(a); got != want {
panic(fmt.Sprintf("subr64a(%x) = %x, want %x", a, got, want))
}
if want, got = c64s-a, subr64s(a); got != want {
panic(fmt.Sprintf("subr64s(%x) = %x, want %x", a, got, want))
}
if want, got = a&^c64a, bic64(a); got != want {
panic(fmt.Sprintf("bic64(%x) = %x, want %x", a, got, want))
}
}
|
