1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+popcnt | FileCheck %s -check-prefixes=CHECK,POPCOUNT
3 ; RUN: llc < %s -mtriple=x86_64-unknown -mattr=-popcnt | FileCheck %s -check-prefixes=CHECK,NO-POPCOUNT
5 declare i8 @llvm.ctpop.i8(i8) nounwind readnone
6 declare i64 @llvm.ctpop.i64(i64) nounwind readnone
8 define i32 @test1(i64 %x) nounwind readnone {
11 ; CHECK-NEXT: leaq -1(%rdi), %rcx
12 ; CHECK-NEXT: xorl %eax, %eax
13 ; CHECK-NEXT: testq %rcx, %rdi
14 ; CHECK-NEXT: setne %al
16 %count = tail call i64 @llvm.ctpop.i64(i64 %x)
17 %cast = trunc i64 %count to i32
18 %cmp = icmp ugt i32 %cast, 1
19 %conv = zext i1 %cmp to i32
24 define i32 @test2(i64 %x) nounwind readnone {
27 ; CHECK-NEXT: leaq -1(%rdi), %rcx
28 ; CHECK-NEXT: xorl %eax, %eax
29 ; CHECK-NEXT: testq %rcx, %rdi
30 ; CHECK-NEXT: sete %al
32 %count = tail call i64 @llvm.ctpop.i64(i64 %x)
33 %cmp = icmp ult i64 %count, 2
34 %conv = zext i1 %cmp to i32
38 define i32 @test3(i64 %x) nounwind readnone {
39 ; POPCOUNT-LABEL: test3:
41 ; POPCOUNT-NEXT: popcntq %rdi, %rcx
42 ; POPCOUNT-NEXT: andb $63, %cl
43 ; POPCOUNT-NEXT: xorl %eax, %eax
44 ; POPCOUNT-NEXT: cmpb $2, %cl
45 ; POPCOUNT-NEXT: setb %al
48 ; NO-POPCOUNT-LABEL: test3:
49 ; NO-POPCOUNT: # %bb.0:
50 ; NO-POPCOUNT-NEXT: movq %rdi, %rax
51 ; NO-POPCOUNT-NEXT: shrq %rax
52 ; NO-POPCOUNT-NEXT: movabsq $6148914691236517205, %rcx # imm = 0x5555555555555555
53 ; NO-POPCOUNT-NEXT: andq %rax, %rcx
54 ; NO-POPCOUNT-NEXT: subq %rcx, %rdi
55 ; NO-POPCOUNT-NEXT: movabsq $3689348814741910323, %rax # imm = 0x3333333333333333
56 ; NO-POPCOUNT-NEXT: movq %rdi, %rcx
57 ; NO-POPCOUNT-NEXT: andq %rax, %rcx
58 ; NO-POPCOUNT-NEXT: shrq $2, %rdi
59 ; NO-POPCOUNT-NEXT: andq %rax, %rdi
60 ; NO-POPCOUNT-NEXT: addq %rcx, %rdi
61 ; NO-POPCOUNT-NEXT: movq %rdi, %rax
62 ; NO-POPCOUNT-NEXT: shrq $4, %rax
63 ; NO-POPCOUNT-NEXT: addq %rdi, %rax
64 ; NO-POPCOUNT-NEXT: movabsq $1085102592571150095, %rcx # imm = 0xF0F0F0F0F0F0F0F
65 ; NO-POPCOUNT-NEXT: andq %rax, %rcx
66 ; NO-POPCOUNT-NEXT: movabsq $72340172838076673, %rdx # imm = 0x101010101010101
67 ; NO-POPCOUNT-NEXT: imulq %rcx, %rdx
68 ; NO-POPCOUNT-NEXT: shrq $56, %rdx
69 ; NO-POPCOUNT-NEXT: andb $63, %dl
70 ; NO-POPCOUNT-NEXT: xorl %eax, %eax
71 ; NO-POPCOUNT-NEXT: cmpb $2, %dl
72 ; NO-POPCOUNT-NEXT: setb %al
73 ; NO-POPCOUNT-NEXT: retq
74 %count = tail call i64 @llvm.ctpop.i64(i64 %x)
75 %cast = trunc i64 %count to i6 ; Too small for 0-64
76 %cmp = icmp ult i6 %cast, 2
77 %conv = zext i1 %cmp to i32
81 define i8 @test4(i8 %x) nounwind readnone {
82 ; POPCOUNT-LABEL: test4:
84 ; POPCOUNT-NEXT: andl $127, %edi
85 ; POPCOUNT-NEXT: popcntl %edi, %eax
86 ; POPCOUNT-NEXT: # kill: def $al killed $al killed $eax
89 ; NO-POPCOUNT-LABEL: test4:
90 ; NO-POPCOUNT: # %bb.0:
91 ; NO-POPCOUNT-NEXT: andl $127, %edi
92 ; NO-POPCOUNT-NEXT: imull $134480385, %edi, %eax # imm = 0x8040201
93 ; NO-POPCOUNT-NEXT: shrl $3, %eax
94 ; NO-POPCOUNT-NEXT: andl $286331153, %eax # imm = 0x11111111
95 ; NO-POPCOUNT-NEXT: imull $286331153, %eax, %eax # imm = 0x11111111
96 ; NO-POPCOUNT-NEXT: shrl $28, %eax
97 ; NO-POPCOUNT-NEXT: # kill: def $al killed $al killed $eax
98 ; NO-POPCOUNT-NEXT: retq
100 %count = tail call i8 @llvm.ctpop.i8(i8 %x2)
101 %and = and i8 %count, 7
105 define i32 @ctpop_eq_one(i64 %x) nounwind readnone {
106 ; POPCOUNT-LABEL: ctpop_eq_one:
108 ; POPCOUNT-NEXT: popcntq %rdi, %rcx
109 ; POPCOUNT-NEXT: xorl %eax, %eax
110 ; POPCOUNT-NEXT: cmpl $1, %ecx
111 ; POPCOUNT-NEXT: sete %al
112 ; POPCOUNT-NEXT: retq
114 ; NO-POPCOUNT-LABEL: ctpop_eq_one:
115 ; NO-POPCOUNT: # %bb.0:
116 ; NO-POPCOUNT-NEXT: leaq -1(%rdi), %rcx
117 ; NO-POPCOUNT-NEXT: xorq %rcx, %rdi
118 ; NO-POPCOUNT-NEXT: xorl %eax, %eax
119 ; NO-POPCOUNT-NEXT: cmpq %rcx, %rdi
120 ; NO-POPCOUNT-NEXT: seta %al
121 ; NO-POPCOUNT-NEXT: retq
122 %count = tail call i64 @llvm.ctpop.i64(i64 %x)
123 %cmp = icmp eq i64 %count, 1
124 %conv = zext i1 %cmp to i32
128 define i32 @ctpop_ne_one(i64 %x) nounwind readnone {
129 ; POPCOUNT-LABEL: ctpop_ne_one:
131 ; POPCOUNT-NEXT: popcntq %rdi, %rcx
132 ; POPCOUNT-NEXT: xorl %eax, %eax
133 ; POPCOUNT-NEXT: cmpl $1, %ecx
134 ; POPCOUNT-NEXT: setne %al
135 ; POPCOUNT-NEXT: retq
137 ; NO-POPCOUNT-LABEL: ctpop_ne_one:
138 ; NO-POPCOUNT: # %bb.0:
139 ; NO-POPCOUNT-NEXT: leaq -1(%rdi), %rcx
140 ; NO-POPCOUNT-NEXT: xorq %rcx, %rdi
141 ; NO-POPCOUNT-NEXT: xorl %eax, %eax
142 ; NO-POPCOUNT-NEXT: cmpq %rcx, %rdi
143 ; NO-POPCOUNT-NEXT: setbe %al
144 ; NO-POPCOUNT-NEXT: retq
145 %count = tail call i64 @llvm.ctpop.i64(i64 %x)
146 %cmp = icmp ne i64 %count, 1
147 %conv = zext i1 %cmp to i32
151 define i1 @ctpop_trunc_non_power2(i255 %x) nounwind {
152 ; CHECK-LABEL: ctpop_trunc_non_power2:
154 ; CHECK-NEXT: movq %rdi, %rax
155 ; CHECK-NEXT: addq $-1, %rax
156 ; CHECK-NEXT: movq %rsi, %r8
157 ; CHECK-NEXT: adcq $-1, %r8
158 ; CHECK-NEXT: movq %rdx, %r9
159 ; CHECK-NEXT: adcq $-1, %r9
160 ; CHECK-NEXT: movabsq $9223372036854775807, %r10 # imm = 0x7FFFFFFFFFFFFFFF
161 ; CHECK-NEXT: movq %rcx, %r11
162 ; CHECK-NEXT: adcq %r10, %r11
163 ; CHECK-NEXT: xorq %r11, %rcx
164 ; CHECK-NEXT: andq %r10, %r11
165 ; CHECK-NEXT: andq %r10, %rcx
166 ; CHECK-NEXT: xorq %r9, %rdx
167 ; CHECK-NEXT: xorq %r8, %rsi
168 ; CHECK-NEXT: xorq %rax, %rdi
169 ; CHECK-NEXT: cmpq %rdi, %rax
170 ; CHECK-NEXT: sbbq %rsi, %r8
171 ; CHECK-NEXT: sbbq %rdx, %r9
172 ; CHECK-NEXT: sbbq %rcx, %r11
173 ; CHECK-NEXT: setb %al
175 %a = call i255 @llvm.ctpop.i255(i255 %x)
176 %b = trunc i255 %a to i8 ; largest value from ctpop is 255, fits in 8 bits.
177 %c = icmp eq i8 %b, 1
180 declare i255 @llvm.ctpop.i255(i255)