1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
3
4declare void @may_unwind()
5
6define i1 @test_switch_in_block_with_assume(i32 %x) {
7; CHECK-LABEL: @test_switch_in_block_with_assume(
8; CHECK-NEXT:  entry:
9; CHECK-NEXT:    call void @may_unwind()
10; CHECK-NEXT:    [[C_1:%.*]] = icmp ult i32 [[X:%.*]], 10
11; CHECK-NEXT:    call void @llvm.assume(i1 [[C_1]])
12; CHECK-NEXT:    switch i32 0, label [[EXIT_1:%.*]] [
13; CHECK-NEXT:    i32 1, label [[EXIT_2:%.*]]
14; CHECK-NEXT:    ]
15; CHECK:       exit.1:
16; CHECK-NEXT:    [[T_1:%.*]] = icmp ult i32 [[X]], 10
17; CHECK-NEXT:    [[C_2:%.*]] = icmp ult i32 [[X]], 9
18; CHECK-NEXT:    [[RES_1:%.*]] = xor i1 true, [[C_2]]
19; CHECK-NEXT:    ret i1 [[RES_1]]
20; CHECK:       exit.2:
21; CHECK-NEXT:    [[T_2:%.*]] = icmp ult i32 [[X]], 10
22; CHECK-NEXT:    [[C_3:%.*]] = icmp ult i32 [[X]], 9
23; CHECK-NEXT:    [[RES_2:%.*]] = xor i1 true, [[C_3]]
24; CHECK-NEXT:    ret i1 [[RES_2]]
25;
26entry:
27  call void @may_unwind()
28  %c.1 = icmp ult i32 %x, 10
29  call void @llvm.assume(i1 %c.1)
30  switch i32 0, label %exit.1 [
31  i32 1, label %exit.2
32  ]
33
34exit.1:
35  %t.1 = icmp ult i32 %x, 10
36  %c.2 = icmp ult i32 %x, 9
37  %res.1 = xor i1 %t.1, %c.2
38  ret i1 %res.1
39
40exit.2:
41  %t.2 = icmp ult i32 %x, 10
42  %c.3 = icmp ult i32 %x, 9
43  %res.2 = xor i1 %t.2, %c.3
44  ret i1 %res.2
45}
46
47declare void @llvm.assume(i1)
48