1; RUN: opt < %s -instcombine -S | FileCheck %s
2
3declare i16 @llvm.bswap.i16(i16)
4declare i32 @llvm.bswap.i32(i32)
5declare <2 x i64> @llvm.bswap.v2i64(<2 x i64>)
6declare i33 @llvm.cttz.i33(i33, i1)
7declare i32 @llvm.ctlz.i32(i32, i1)
8declare i8 @llvm.ctpop.i8(i8)
9declare i11 @llvm.ctpop.i11(i11)
10declare <2 x i32> @llvm.cttz.v2i32(<2 x i32>, i1)
11declare <2 x i32> @llvm.ctlz.v2i32(<2 x i32>, i1)
12declare <2 x i32> @llvm.ctpop.v2i32(<2 x i32>)
13
14define i1 @bswap_eq_i16(i16 %x) {
15; CHECK-LABEL: @bswap_eq_i16(
16; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i16 %x, 256
17; CHECK-NEXT:    ret i1 [[CMP]]
18;
19  %bs = call i16 @llvm.bswap.i16(i16 %x)
20  %cmp = icmp eq i16 %bs, 1
21  ret i1 %cmp
22}
23
24define i1 @bswap_ne_i32(i32 %x) {
25; CHECK-LABEL: @bswap_ne_i32(
26; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 %x, 33554432
27; CHECK-NEXT:    ret i1 [[CMP]]
28;
29  %bs = tail call i32 @llvm.bswap.i32(i32 %x)
30  %cmp = icmp ne i32 %bs, 2
31  ret i1 %cmp
32}
33
34define <2 x i1> @bswap_eq_v2i64(<2 x i64> %x) {
35; CHECK-LABEL: @bswap_eq_v2i64(
36; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i64> %x, <i64 216172782113783808, i64 216172782113783808>
37; CHECK-NEXT:    ret <2 x i1> [[CMP]]
38;
39  %bs = tail call <2 x i64> @llvm.bswap.v2i64(<2 x i64> %x)
40  %cmp = icmp eq <2 x i64> %bs, <i64 3, i64 3>
41  ret <2 x i1> %cmp
42}
43
44define i1 @ctlz_eq_bitwidth_i32(i32 %x) {
45; CHECK-LABEL: @ctlz_eq_bitwidth_i32(
46; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 %x, 0
47; CHECK-NEXT:    ret i1 [[CMP]]
48;
49  %lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
50  %cmp = icmp eq i32 %lz, 32
51  ret i1 %cmp
52}
53
54define <2 x i1> @ctlz_ne_bitwidth_v2i32(<2 x i32> %a) {
55; CHECK-LABEL: @ctlz_ne_bitwidth_v2i32(
56; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> %a, zeroinitializer
57; CHECK-NEXT:    ret <2 x i1> [[CMP]]
58;
59  %x = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %a, i1 false)
60  %cmp = icmp ne <2 x i32> %x, <i32 32, i32 32>
61  ret <2 x i1> %cmp
62}
63
64define i1 @cttz_ne_bitwidth_i33(i33 %x) {
65; CHECK-LABEL: @cttz_ne_bitwidth_i33(
66; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i33 %x, 0
67; CHECK-NEXT:    ret i1 [[CMP]]
68;
69  %tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
70  %cmp = icmp ne i33 %tz, 33
71  ret i1 %cmp
72}
73
74define <2 x i1> @cttz_eq_bitwidth_v2i32(<2 x i32> %a) {
75; CHECK-LABEL: @cttz_eq_bitwidth_v2i32(
76; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i32> %a, zeroinitializer
77; CHECK-NEXT:    ret <2 x i1> [[CMP]]
78;
79  %x = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> %a, i1 false)
80  %cmp = icmp eq <2 x i32> %x, <i32 32, i32 32>
81  ret <2 x i1> %cmp
82}
83
84define i1 @ctpop_eq_zero_i11(i11 %x) {
85; CHECK-LABEL: @ctpop_eq_zero_i11(
86; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i11 %x, 0
87; CHECK-NEXT:    ret i1 [[CMP]]
88;
89  %pop = tail call i11 @llvm.ctpop.i11(i11 %x)
90  %cmp = icmp eq i11 %pop, 0
91  ret i1 %cmp
92}
93
94define <2 x i1> @ctpop_ne_zero_v2i32(<2 x i32> %x) {
95; CHECK-LABEL: @ctpop_ne_zero_v2i32(
96; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> %x, zeroinitializer
97; CHECK-NEXT:    ret <2 x i1> [[CMP]]
98;
99  %pop = tail call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> %x)
100  %cmp = icmp ne <2 x i32> %pop, zeroinitializer
101  ret <2 x i1> %cmp
102}
103
104define i1 @ctpop_eq_bitwidth_i8(i8 %x) {
105; CHECK-LABEL: @ctpop_eq_bitwidth_i8(
106; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i8 %x, -1
107; CHECK-NEXT:    ret i1 [[CMP]]
108;
109  %pop = tail call i8 @llvm.ctpop.i8(i8 %x)
110  %cmp = icmp eq i8 %pop, 8
111  ret i1 %cmp
112}
113
114define <2 x i1> @ctpop_ne_bitwidth_v2i32(<2 x i32> %x) {
115; CHECK-LABEL: @ctpop_ne_bitwidth_v2i32(
116; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> %x, <i32 -1, i32 -1>
117; CHECK-NEXT:    ret <2 x i1> [[CMP]]
118;
119  %pop = tail call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> %x)
120  %cmp = icmp ne <2 x i32> %pop, <i32 32, i32 32>
121  ret <2 x i1> %cmp
122}
123
124