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
| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=-popcnt | FileCheck %s --check-prefix=X86-NOPOPCNT
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=-popcnt | FileCheck %s --check-prefix=X64-NOPOPCNT
; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=+popcnt | FileCheck %s --check-prefix=X86-POPCNT
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+popcnt | FileCheck %s --check-prefix=X64-POPCNT
define i32 @parity_32(i32 %x) {
; X86-NOPOPCNT-LABEL: parity_32:
; X86-NOPOPCNT: # %bb.0:
; X86-NOPOPCNT-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NOPOPCNT-NEXT: movl %eax, %ecx
; X86-NOPOPCNT-NEXT: shrl $16, %ecx
; X86-NOPOPCNT-NEXT: xorl %eax, %ecx
; X86-NOPOPCNT-NEXT: xorl %eax, %eax
; X86-NOPOPCNT-NEXT: xorb %ch, %cl
; X86-NOPOPCNT-NEXT: setnp %al
; X86-NOPOPCNT-NEXT: retl
;
; X64-NOPOPCNT-LABEL: parity_32:
; X64-NOPOPCNT: # %bb.0:
; X64-NOPOPCNT-NEXT: movl %edi, %ecx
; X64-NOPOPCNT-NEXT: shrl $16, %ecx
; X64-NOPOPCNT-NEXT: xorl %edi, %ecx
; X64-NOPOPCNT-NEXT: movl %ecx, %edx
; X64-NOPOPCNT-NEXT: shrl $8, %edx
; X64-NOPOPCNT-NEXT: xorl %eax, %eax
; X64-NOPOPCNT-NEXT: xorb %cl, %dl
; X64-NOPOPCNT-NEXT: setnp %al
; X64-NOPOPCNT-NEXT: retq
;
; X86-POPCNT-LABEL: parity_32:
; X86-POPCNT: # %bb.0:
; X86-POPCNT-NEXT: popcntl {{[0-9]+}}(%esp), %eax
; X86-POPCNT-NEXT: andl $1, %eax
; X86-POPCNT-NEXT: retl
;
; X64-POPCNT-LABEL: parity_32:
; X64-POPCNT: # %bb.0:
; X64-POPCNT-NEXT: popcntl %edi, %eax
; X64-POPCNT-NEXT: andl $1, %eax
; X64-POPCNT-NEXT: retq
%1 = tail call i32 @llvm.ctpop.i32(i32 %x)
%2 = and i32 %1, 1
ret i32 %2
}
define i64 @parity_64(i64 %x) {
; X86-NOPOPCNT-LABEL: parity_64:
; X86-NOPOPCNT: # %bb.0:
; X86-NOPOPCNT-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NOPOPCNT-NEXT: xorl {{[0-9]+}}(%esp), %eax
; X86-NOPOPCNT-NEXT: movl %eax, %ecx
; X86-NOPOPCNT-NEXT: shrl $16, %ecx
; X86-NOPOPCNT-NEXT: xorl %eax, %ecx
; X86-NOPOPCNT-NEXT: xorl %eax, %eax
; X86-NOPOPCNT-NEXT: xorb %ch, %cl
; X86-NOPOPCNT-NEXT: setnp %al
; X86-NOPOPCNT-NEXT: xorl %edx, %edx
; X86-NOPOPCNT-NEXT: retl
;
; X64-NOPOPCNT-LABEL: parity_64:
; X64-NOPOPCNT: # %bb.0:
; X64-NOPOPCNT-NEXT: movq %rdi, %rax
; X64-NOPOPCNT-NEXT: shrq $32, %rax
; X64-NOPOPCNT-NEXT: xorl %edi, %eax
; X64-NOPOPCNT-NEXT: movl %eax, %ecx
; X64-NOPOPCNT-NEXT: shrl $16, %ecx
; X64-NOPOPCNT-NEXT: xorl %eax, %ecx
; X64-NOPOPCNT-NEXT: movl %ecx, %edx
; X64-NOPOPCNT-NEXT: shrl $8, %edx
; X64-NOPOPCNT-NEXT: xorl %eax, %eax
; X64-NOPOPCNT-NEXT: xorb %cl, %dl
; X64-NOPOPCNT-NEXT: setnp %al
; X64-NOPOPCNT-NEXT: retq
;
; X86-POPCNT-LABEL: parity_64:
; X86-POPCNT: # %bb.0:
; X86-POPCNT-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-POPCNT-NEXT: xorl {{[0-9]+}}(%esp), %eax
; X86-POPCNT-NEXT: popcntl %eax, %eax
; X86-POPCNT-NEXT: andl $1, %eax
; X86-POPCNT-NEXT: xorl %edx, %edx
; X86-POPCNT-NEXT: retl
;
; X64-POPCNT-LABEL: parity_64:
; X64-POPCNT: # %bb.0:
; X64-POPCNT-NEXT: popcntq %rdi, %rax
; X64-POPCNT-NEXT: andl $1, %eax
; X64-POPCNT-NEXT: retq
%1 = tail call i64 @llvm.ctpop.i64(i64 %x)
%2 = and i64 %1, 1
ret i64 %2
}
declare i32 @llvm.ctpop.i32(i32 %x)
declare i64 @llvm.ctpop.i64(i64 %x)
|