/
noextend.go
253 lines (203 loc) · 5.57 KB
/
noextend.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
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
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
// asmcheck
// Copyright 2018 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.
package codegen
var sval64 [8]int64
var sval32 [8]int32
var sval16 [8]int16
var sval8 [8]int8
var val64 [8]uint64
var val32 [8]uint32
var val16 [8]uint16
var val8 [8]uint8
// ----------------------------- //
// avoid zero/sign extensions //
// ----------------------------- //
func set16(x8 int8, u8 uint8, y8 int8, z8 uint8) {
// Truncate not needed, load does sign/zero extend
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
sval16[0] = int16(x8)
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
val16[0] = uint16(u8)
// AND not needed due to size
// ppc64:-"ANDCC"
// ppc64le:-"ANDCC"
sval16[1] = 255 & int16(x8+y8)
// ppc64:-"ANDCC"
// ppc64le:-"ANDCC"
val16[1] = 255 & uint16(u8+z8)
}
func shiftidx(x8 int8, u8 uint8, x16 int16, u16 uint16, x32 int32, u32 uint32) {
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
sval16[0] = int16(val16[x8>>1])
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
val16[0] = uint16(sval16[u8>>2])
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
sval16[1] = int16(val16[x16>>1])
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
val16[1] = uint16(sval16[u16>>2])
}
func setnox(x8 int8, u8 uint8, y8 int8, z8 uint8, x16 int16, u16 uint16, x32 int32, u32 uint32) {
// Truncate not needed due to sign/zero extension on load
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
sval16[0] = int16(x8)
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
val16[0] = uint16(u8)
// AND not needed due to size
// ppc64:-"ANDCC"
// ppc64le:-"ANDCC"
sval16[1] = 255 & int16(x8+y8)
// ppc64:-"ANDCC"
// ppc64le:-"ANDCC"
val16[1] = 255 & uint16(u8+z8)
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
sval32[0] = int32(x8)
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
sval32[1] = int32(x16)
//ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
//ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
val32[0] = uint32(u8)
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
val32[1] = uint32(u16)
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
sval64[0] = int64(x8)
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
sval64[1] = int64(x16)
// ppc64:-"MOVW\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVW\tR\\d+,\\sR\\d+"
sval64[2] = int64(x32)
//ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
//ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
val64[0] = uint64(u8)
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
val64[1] = uint64(u16)
// ppc64:-"MOVWZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVWZ\tR\\d+,\\sR\\d+"
val64[2] = uint64(u32)
}
func cmp16(x8 int8, u8 uint8, x32 int32, u32 uint32, x64 int64, u64 uint64) bool {
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
if int16(x8) == sval16[0] {
return true
}
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
if uint16(u8) == val16[0] {
return true
}
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
if uint16(u32>>16) == val16[0] {
return true
}
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
if uint16(u64>>48) == val16[0] {
return true
}
// Verify the truncates are using the correct sign.
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
if int16(x32) == sval16[0] {
return true
}
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
if uint16(u32) == val16[0] {
return true
}
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
if int16(x64) == sval16[0] {
return true
}
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
if uint16(u64) == val16[0] {
return true
}
return false
}
func cmp32(x8 int8, u8 uint8, x16 int16, u16 uint16, x64 int64, u64 uint64) bool {
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
if int32(x8) == sval32[0] {
return true
}
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
if uint32(u8) == val32[0] {
return true
}
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
if int32(x16) == sval32[0] {
return true
}
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
if uint32(u16) == val32[0] {
return true
}
// Verify the truncates are using the correct sign.
// ppc64:-"MOVWZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVWZ\tR\\d+,\\sR\\d+"
if int32(x64) == sval32[0] {
return true
}
// ppc64:-"MOVW\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVW\tR\\d+,\\sR\\d+"
if uint32(u64) == val32[0] {
return true
}
return false
}
func cmp64(x8 int8, u8 uint8, x16 int16, u16 uint16, x32 int32, u32 uint32) bool {
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
if int64(x8) == sval64[0] {
return true
}
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
if uint64(u8) == val64[0] {
return true
}
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
if int64(x16) == sval64[0] {
return true
}
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
if uint64(u16) == val64[0] {
return true
}
// ppc64:-"MOVW\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVW\tR\\d+,\\sR\\d+"
if int64(x32) == sval64[0] {
return true
}
// ppc64:-"MOVWZ\tR\\d+,\\sR\\d+"
// ppc64le:-"MOVWZ\tR\\d+,\\sR\\d+"
if uint64(u32) == val64[0] {
return true
}
return false
}