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
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+popcnt | FileCheck %s -check-prefixes=CHECK,POPCOUNT
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=-popcnt | FileCheck %s -check-prefixes=CHECK,NO-POPCOUNT
declare i8 @llvm.ctpop.i8(i8) nounwind readnone
declare i64 @llvm.ctpop.i64(i64) nounwind readnone
define i32 @test1(i64 %x) nounwind readnone {
; CHECK-LABEL: test1:
; CHECK: # %bb.0:
; CHECK-NEXT: leaq -1(%rdi), %rcx
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: testq %rcx, %rdi
; CHECK-NEXT: setne %al
; CHECK-NEXT: retq
%count = tail call i64 @llvm.ctpop.i64(i64 %x)
%cast = trunc i64 %count to i32
%cmp = icmp ugt i32 %cast, 1
%conv = zext i1 %cmp to i32
ret i32 %conv
}
define i32 @test2(i64 %x) nounwind readnone {
; CHECK-LABEL: test2:
; CHECK: # %bb.0:
; CHECK-NEXT: leaq -1(%rdi), %rcx
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: testq %rcx, %rdi
; CHECK-NEXT: sete %al
; CHECK-NEXT: retq
%count = tail call i64 @llvm.ctpop.i64(i64 %x)
%cmp = icmp ult i64 %count, 2
%conv = zext i1 %cmp to i32
ret i32 %conv
}
define i32 @test3(i64 %x) nounwind readnone {
; POPCOUNT-LABEL: test3:
; POPCOUNT: # %bb.0:
; POPCOUNT-NEXT: popcntq %rdi, %rcx
; POPCOUNT-NEXT: andb $63, %cl
; POPCOUNT-NEXT: xorl %eax, %eax
; POPCOUNT-NEXT: cmpb $2, %cl
; POPCOUNT-NEXT: setb %al
; POPCOUNT-NEXT: retq
;
; NO-POPCOUNT-LABEL: test3:
; NO-POPCOUNT: # %bb.0:
; NO-POPCOUNT-NEXT: movq %rdi, %rax
; NO-POPCOUNT-NEXT: shrq %rax
; NO-POPCOUNT-NEXT: movabsq $6148914691236517205, %rcx # imm = 0x5555555555555555
; NO-POPCOUNT-NEXT: andq %rax, %rcx
; NO-POPCOUNT-NEXT: subq %rcx, %rdi
; NO-POPCOUNT-NEXT: movabsq $3689348814741910323, %rax # imm = 0x3333333333333333
; NO-POPCOUNT-NEXT: movq %rdi, %rcx
; NO-POPCOUNT-NEXT: andq %rax, %rcx
; NO-POPCOUNT-NEXT: shrq $2, %rdi
; NO-POPCOUNT-NEXT: andq %rax, %rdi
; NO-POPCOUNT-NEXT: addq %rcx, %rdi
; NO-POPCOUNT-NEXT: movq %rdi, %rax
; NO-POPCOUNT-NEXT: shrq $4, %rax
; NO-POPCOUNT-NEXT: addq %rdi, %rax
; NO-POPCOUNT-NEXT: movabsq $1085102592571150095, %rcx # imm = 0xF0F0F0F0F0F0F0F
; NO-POPCOUNT-NEXT: andq %rax, %rcx
; NO-POPCOUNT-NEXT: movabsq $72340172838076673, %rdx # imm = 0x101010101010101
; NO-POPCOUNT-NEXT: imulq %rcx, %rdx
; NO-POPCOUNT-NEXT: shrq $56, %rdx
; NO-POPCOUNT-NEXT: andb $63, %dl
; NO-POPCOUNT-NEXT: xorl %eax, %eax
; NO-POPCOUNT-NEXT: cmpb $2, %dl
; NO-POPCOUNT-NEXT: setb %al
; NO-POPCOUNT-NEXT: retq
%count = tail call i64 @llvm.ctpop.i64(i64 %x)
%cast = trunc i64 %count to i6 ; Too small for 0-64
%cmp = icmp ult i6 %cast, 2
%conv = zext i1 %cmp to i32
ret i32 %conv
}
define i8 @test4(i8 %x) nounwind readnone {
; POPCOUNT-LABEL: test4:
; POPCOUNT: # %bb.0:
; POPCOUNT-NEXT: andl $127, %edi
; POPCOUNT-NEXT: popcntl %edi, %eax
; POPCOUNT-NEXT: # kill: def $al killed $al killed $eax
; POPCOUNT-NEXT: retq
;
; NO-POPCOUNT-LABEL: test4:
; NO-POPCOUNT: # %bb.0:
; NO-POPCOUNT-NEXT: # kill: def $edi killed $edi def $rdi
; NO-POPCOUNT-NEXT: andb $127, %dil
; NO-POPCOUNT-NEXT: movl %edi, %eax
; NO-POPCOUNT-NEXT: shrb %al
; NO-POPCOUNT-NEXT: andb $21, %al
; NO-POPCOUNT-NEXT: subb %al, %dil
; NO-POPCOUNT-NEXT: movl %edi, %eax
; NO-POPCOUNT-NEXT: andb $51, %al
; NO-POPCOUNT-NEXT: shrb $2, %dil
; NO-POPCOUNT-NEXT: andb $51, %dil
; NO-POPCOUNT-NEXT: addb %al, %dil
; NO-POPCOUNT-NEXT: movl %edi, %eax
; NO-POPCOUNT-NEXT: shrb $4, %al
; NO-POPCOUNT-NEXT: addl %edi, %eax
; NO-POPCOUNT-NEXT: andb $15, %al
; NO-POPCOUNT-NEXT: # kill: def $al killed $al killed $eax
; NO-POPCOUNT-NEXT: retq
%x2 = and i8 %x, 127
%count = tail call i8 @llvm.ctpop.i8(i8 %x2)
%and = and i8 %count, 7
ret i8 %and
}
define i32 @ctpop_eq_one(i64 %x) nounwind readnone {
; POPCOUNT-LABEL: ctpop_eq_one:
; POPCOUNT: # %bb.0:
; POPCOUNT-NEXT: popcntq %rdi, %rcx
; POPCOUNT-NEXT: xorl %eax, %eax
; POPCOUNT-NEXT: cmpq $1, %rcx
; POPCOUNT-NEXT: sete %al
; POPCOUNT-NEXT: retq
;
; NO-POPCOUNT-LABEL: ctpop_eq_one:
; NO-POPCOUNT: # %bb.0:
; NO-POPCOUNT-NEXT: leaq -1(%rdi), %rax
; NO-POPCOUNT-NEXT: testq %rax, %rdi
; NO-POPCOUNT-NEXT: sete %al
; NO-POPCOUNT-NEXT: testq %rdi, %rdi
; NO-POPCOUNT-NEXT: setne %cl
; NO-POPCOUNT-NEXT: andb %al, %cl
; NO-POPCOUNT-NEXT: movzbl %cl, %eax
; NO-POPCOUNT-NEXT: retq
%count = tail call i64 @llvm.ctpop.i64(i64 %x)
%cmp = icmp eq i64 %count, 1
%conv = zext i1 %cmp to i32
ret i32 %conv
}
define i32 @ctpop_ne_one(i64 %x) nounwind readnone {
; POPCOUNT-LABEL: ctpop_ne_one:
; POPCOUNT: # %bb.0:
; POPCOUNT-NEXT: popcntq %rdi, %rcx
; POPCOUNT-NEXT: xorl %eax, %eax
; POPCOUNT-NEXT: cmpq $1, %rcx
; POPCOUNT-NEXT: setne %al
; POPCOUNT-NEXT: retq
;
; NO-POPCOUNT-LABEL: ctpop_ne_one:
; NO-POPCOUNT: # %bb.0:
; NO-POPCOUNT-NEXT: leaq -1(%rdi), %rax
; NO-POPCOUNT-NEXT: testq %rax, %rdi
; NO-POPCOUNT-NEXT: setne %al
; NO-POPCOUNT-NEXT: testq %rdi, %rdi
; NO-POPCOUNT-NEXT: sete %cl
; NO-POPCOUNT-NEXT: orb %al, %cl
; NO-POPCOUNT-NEXT: movzbl %cl, %eax
; NO-POPCOUNT-NEXT: retq
%count = tail call i64 @llvm.ctpop.i64(i64 %x)
%cmp = icmp ne i64 %count, 1
%conv = zext i1 %cmp to i32
ret i32 %conv
}
|
