1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -S -jump-threading < %s | FileCheck %s
3
4define void @test(i8* %ptr) {
5; CHECK-LABEL: @test(
6; CHECK-NEXT:  entry:
7; CHECK-NEXT:    call void @llvm.experimental.noalias.scope.decl(metadata !0)
8; CHECK-NEXT:    br label [[LOOP:%.*]]
9; CHECK:       loop:
10; CHECK-NEXT:    [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I_INC:%.*]], [[LATCH:%.*]] ]
11; CHECK-NEXT:    [[C:%.*]] = icmp eq i32 [[I]], 100
12; CHECK-NEXT:    br i1 [[C]], label [[EXIT:%.*]], label [[LATCH]]
13; CHECK:       latch:
14; CHECK-NEXT:    call void @llvm.experimental.noalias.scope.decl(metadata !3)
15; CHECK-NEXT:    store i8 0, i8* [[PTR:%.*]], align 1, !noalias !0
16; CHECK-NEXT:    store i8 1, i8* [[PTR]], align 1, !noalias !3
17; CHECK-NEXT:    [[I_INC]] = add i32 [[I]], 1
18; CHECK-NEXT:    br label [[LOOP]]
19; CHECK:       exit:
20; CHECK-NEXT:    call void @llvm.experimental.noalias.scope.decl(metadata !5)
21; CHECK-NEXT:    store i8 0, i8* [[PTR]], align 1, !noalias !0
22; CHECK-NEXT:    store i8 1, i8* [[PTR]], align 1, !noalias !5
23; CHECK-NEXT:    ret void
24;
25entry:
26  call void @llvm.experimental.noalias.scope.decl(metadata !0)
27  br label %loop
28
29loop:
30  %i = phi i32 [ 0, %entry ], [ %i.inc, %latch ]
31  %c = icmp eq i32 %i, 100
32  br i1 %c, label %if, label %latch
33
34if:
35  br label %latch
36
37latch:
38  %p = phi i1 [ true, %if ], [ false, %loop ]
39  call void @llvm.experimental.noalias.scope.decl(metadata !3)
40  store i8 0, i8* %ptr, !noalias !0
41  store i8 1, i8* %ptr, !noalias !3
42  %i.inc = add i32 %i, 1
43  br i1 %p, label %exit, label %loop
44
45exit:
46  ret void
47}
48
49declare void @llvm.experimental.noalias.scope.decl(metadata)
50
51!0 = !{!1}
52!1 = distinct !{!1, !2, !"scope1"}
53!2 = distinct !{!2, !"domain"}
54!3 = !{!4}
55!4 = distinct !{!4, !2, !"scope2"}
56
57; CHECK: !0 = !{!1}
58; CHECK: !1 = distinct !{!1, !2, !"scope1"}
59; CHECK: !2 = distinct !{!2, !"domain"}
60; CHECK: !3 = !{!4}
61; CHECK: !4 = distinct !{!4, !2, !"scope2"}
62; CHECK: !5 = !{!6}
63; CHECK: !6 = distinct !{!6, !2, !"scope2:thread"}
64