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
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs -o - %s -mtriple=aarch64-linux-gnu | FileCheck %s
define i4 @parity_4(i4 %x) {
; CHECK-LABEL: parity_4:
; CHECK: // %bb.0:
; CHECK-NEXT: and w8, w0, #0xf
; CHECK-NEXT: eor w8, w8, w8, lsr #2
; CHECK-NEXT: eor w8, w8, w8, lsr #1
; CHECK-NEXT: and w0, w8, #0x1
; CHECK-NEXT: ret
%1 = tail call i4 @llvm.ctpop.i4(i4 %x)
%2 = and i4 %1, 1
ret i4 %2
}
define i8 @parity_8(i8 %x) {
; CHECK-LABEL: parity_8:
; CHECK: // %bb.0:
; CHECK-NEXT: and w8, w0, #0xff
; CHECK-NEXT: eor w8, w8, w8, lsr #4
; CHECK-NEXT: eor w8, w8, w8, lsr #2
; CHECK-NEXT: eor w8, w8, w8, lsr #1
; CHECK-NEXT: and w0, w8, #0x1
; CHECK-NEXT: ret
%1 = tail call i8 @llvm.ctpop.i8(i8 %x)
%2 = and i8 %1, 1
ret i8 %2
}
define i16 @parity_16(i16 %x) {
; CHECK-LABEL: parity_16:
; CHECK: // %bb.0:
; CHECK-NEXT: and w8, w0, #0xffff
; CHECK-NEXT: eor w8, w8, w8, lsr #8
; CHECK-NEXT: eor w8, w8, w8, lsr #4
; CHECK-NEXT: eor w8, w8, w8, lsr #2
; CHECK-NEXT: eor w8, w8, w8, lsr #1
; CHECK-NEXT: and w0, w8, #0x1
; CHECK-NEXT: ret
%1 = tail call i16 @llvm.ctpop.i16(i16 %x)
%2 = and i16 %1, 1
ret i16 %2
}
define i17 @parity_17(i17 %x) {
; CHECK-LABEL: parity_17:
; CHECK: // %bb.0:
; CHECK-NEXT: and w8, w0, #0x1ffff
; CHECK-NEXT: eor w8, w8, w8, lsr #16
; CHECK-NEXT: eor w8, w8, w8, lsr #8
; CHECK-NEXT: eor w8, w8, w8, lsr #4
; CHECK-NEXT: eor w8, w8, w8, lsr #2
; CHECK-NEXT: eor w8, w8, w8, lsr #1
; CHECK-NEXT: and w0, w8, #0x1
; CHECK-NEXT: ret
%1 = tail call i17 @llvm.ctpop.i17(i17 %x)
%2 = and i17 %1, 1
ret i17 %2
}
define i32 @parity_32(i32 %x) {
; CHECK-LABEL: parity_32:
; CHECK: // %bb.0:
; CHECK-NEXT: eor w8, w0, w0, lsr #16
; CHECK-NEXT: eor w8, w8, w8, lsr #8
; CHECK-NEXT: eor w8, w8, w8, lsr #4
; CHECK-NEXT: eor w8, w8, w8, lsr #2
; CHECK-NEXT: eor w8, w8, w8, lsr #1
; CHECK-NEXT: and w0, w8, #0x1
; CHECK-NEXT: ret
%1 = tail call i32 @llvm.ctpop.i32(i32 %x)
%2 = and i32 %1, 1
ret i32 %2
}
define i64 @parity_64(i64 %x) {
; CHECK-LABEL: parity_64:
; CHECK: // %bb.0:
; CHECK-NEXT: eor x8, x0, x0, lsr #32
; CHECK-NEXT: eor x8, x8, x8, lsr #16
; CHECK-NEXT: eor x8, x8, x8, lsr #8
; CHECK-NEXT: eor x8, x8, x8, lsr #4
; CHECK-NEXT: eor x8, x8, x8, lsr #2
; CHECK-NEXT: eor w8, w8, w8, lsr #1
; CHECK-NEXT: and x0, x8, #0x1
; CHECK-NEXT: ret
%1 = tail call i64 @llvm.ctpop.i64(i64 %x)
%2 = and i64 %1, 1
ret i64 %2
}
define i32 @parity_64_trunc(i64 %x) {
; CHECK-LABEL: parity_64_trunc:
; CHECK: // %bb.0:
; CHECK-NEXT: eor x8, x0, x0, lsr #32
; CHECK-NEXT: eor x8, x8, x8, lsr #16
; CHECK-NEXT: eor x8, x8, x8, lsr #8
; CHECK-NEXT: eor x8, x8, x8, lsr #4
; CHECK-NEXT: eor x8, x8, x8, lsr #2
; CHECK-NEXT: eor w8, w8, w8, lsr #1
; CHECK-NEXT: and w0, w8, #0x1
; CHECK-NEXT: ret
%1 = tail call i64 @llvm.ctpop.i64(i64 %x)
%2 = trunc i64 %1 to i32
%3 = and i32 %2, 1
ret i32 %3
}
define i8 @parity_32_trunc(i32 %x) {
; CHECK-LABEL: parity_32_trunc:
; CHECK: // %bb.0:
; CHECK-NEXT: eor w8, w0, w0, lsr #16
; CHECK-NEXT: eor w8, w8, w8, lsr #8
; CHECK-NEXT: eor w8, w8, w8, lsr #4
; CHECK-NEXT: eor w8, w8, w8, lsr #2
; CHECK-NEXT: eor w8, w8, w8, lsr #1
; CHECK-NEXT: and w0, w8, #0x1
; CHECK-NEXT: ret
%1 = tail call i32 @llvm.ctpop.i32(i32 %x)
%2 = trunc i32 %1 to i8
%3 = and i8 %2, 1
ret i8 %3
}
define i32 @parity_8_zext(i8 %x) {
; CHECK-LABEL: parity_8_zext:
; CHECK: // %bb.0:
; CHECK-NEXT: and w8, w0, #0xff
; CHECK-NEXT: eor w8, w8, w8, lsr #4
; CHECK-NEXT: eor w8, w8, w8, lsr #2
; CHECK-NEXT: eor w8, w8, w8, lsr #1
; CHECK-NEXT: and w0, w8, #0x1
; CHECK-NEXT: ret
%a = zext i8 %x to i32
%b = tail call i32 @llvm.ctpop.i32(i32 %a)
%c = and i32 %b, 1
ret i32 %c
}
define i32 @parity_8_mask(i32 %x) {
; CHECK-LABEL: parity_8_mask:
; CHECK: // %bb.0:
; CHECK-NEXT: and w8, w0, #0xff
; CHECK-NEXT: eor w8, w8, w8, lsr #4
; CHECK-NEXT: eor w8, w8, w8, lsr #2
; CHECK-NEXT: eor w8, w8, w8, lsr #1
; CHECK-NEXT: and w0, w8, #0x1
; CHECK-NEXT: ret
%a = and i32 %x, 255
%b = tail call i32 @llvm.ctpop.i32(i32 %a)
%c = and i32 %b, 1
ret i32 %c
}
declare i4 @llvm.ctpop.i4(i4 %x)
declare i8 @llvm.ctpop.i8(i8 %x)
declare i16 @llvm.ctpop.i16(i16 %x)
declare i17 @llvm.ctpop.i17(i17 %x)
declare i32 @llvm.ctpop.i32(i32 %x)
declare i64 @llvm.ctpop.i64(i64 %x)
|
