1 ; RUN: opt < %s -instcombine -S | FileCheck %s
2 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
3 target triple = "x86_64-unknown-linux-gnu"
5 ; Function Attrs: nounwind
6 declare void @llvm.assume(i1) #1
8 ; Function Attrs: nounwind uwtable
9 define i32 @test1(i32 %a) #0 {
12 ; CHECK: call void @llvm.assume
16 %cmp = icmp eq i32 %and, 5
17 tail call void @llvm.assume(i1 %cmp)
23 ; Function Attrs: nounwind uwtable
24 define i32 @test2(i32 %a) #0 {
27 ; CHECK: call void @llvm.assume
31 %nand = xor i32 %and, -1
32 %cmp = icmp eq i32 %nand, 4294967285
33 tail call void @llvm.assume(i1 %cmp)
39 ; Function Attrs: nounwind uwtable
40 define i32 @test3(i32 %a) #0 {
43 ; CHECK: call void @llvm.assume
46 %v = or i32 %a, 4294967280
47 %cmp = icmp eq i32 %v, 4294967285
48 tail call void @llvm.assume(i1 %cmp)
54 ; Function Attrs: nounwind uwtable
55 define i32 @test4(i32 %a) #0 {
58 ; CHECK: call void @llvm.assume
61 %v = or i32 %a, 4294967280
63 %cmp = icmp eq i32 %nv, 5
64 tail call void @llvm.assume(i1 %cmp)
70 ; Function Attrs: nounwind uwtable
71 define i32 @test5(i32 %a) #0 {
74 ; CHECK: call void @llvm.assume
78 %cmp = icmp eq i32 %v, 5
79 tail call void @llvm.assume(i1 %cmp)
85 ; Function Attrs: nounwind uwtable
86 define i32 @test6(i32 %a) #0 {
89 ; CHECK: call void @llvm.assume
93 %cmp = icmp eq i32 %v, 20
94 tail call void @llvm.assume(i1 %cmp)
96 %and1 = and i32 %a, 63
100 ; Function Attrs: nounwind uwtable
101 define i32 @test7(i32 %a) #0 {
103 ; CHECK-LABEL: @test7
104 ; CHECK: call void @llvm.assume
108 %cmp = icmp eq i32 %v, 5
109 tail call void @llvm.assume(i1 %cmp)
111 %and1 = and i32 %a, 252
115 ; Function Attrs: nounwind uwtable
116 define i32 @test8(i32 %a) #0 {
118 ; CHECK-LABEL: @test8
119 ; CHECK: call void @llvm.assume
123 %cmp = icmp eq i32 %v, 5
124 tail call void @llvm.assume(i1 %cmp)
126 %and1 = and i32 %a, 252
130 ; Function Attrs: nounwind uwtable
131 define i32 @test9(i32 %a) #0 {
133 ; CHECK-LABEL: @test9
134 ; CHECK: call void @llvm.assume
137 %cmp = icmp sgt i32 %a, 5
138 tail call void @llvm.assume(i1 %cmp)
140 %and1 = and i32 %a, 2147483648
144 ; Function Attrs: nounwind uwtable
145 define i32 @test10(i32 %a) #0 {
147 ; CHECK-LABEL: @test10
148 ; CHECK: call void @llvm.assume
149 ; CHECK: ret i32 -2147483648
151 %cmp = icmp sle i32 %a, -2
152 tail call void @llvm.assume(i1 %cmp)
154 %and1 = and i32 %a, 2147483648
158 ; Function Attrs: nounwind uwtable
159 define i32 @test11(i32 %a) #0 {
161 ; CHECK-LABEL: @test11
162 ; CHECK: call void @llvm.assume
165 %cmp = icmp ule i32 %a, 256
166 tail call void @llvm.assume(i1 %cmp)
168 %and1 = and i32 %a, 3072
172 attributes #0 = { nounwind uwtable }
173 attributes #1 = { nounwind }