1 ; RUN: opt < %s -S -passes=memcpyopt | FileCheck --match-full-lines %s
3 ; Alias scopes are merged by taking the intersection of domains, then the union of the scopes within those domains
4 define i8 @test(i8 %input) {
8 ; CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 8 %dst, ptr align 8 %src, i64 1, i1 false), !alias.scope ![[SCOPE:[0-9]+]]
9 call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %src), !noalias !4
10 store i8 %input, ptr %src
11 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %tmp, ptr align 8 %src, i64 1, i1 false), !alias.scope !0
12 call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %src), !noalias !4
13 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %dst, ptr align 8 %tmp, i64 1, i1 false), !alias.scope !4
14 %ret_value = load i8, ptr %dst
18 ; Merged scope contains "callee0: %a" and "callee0 : %b"
19 ; CHECK-DAG: ![[CALLEE0_A:[0-9]+]] = distinct !{!{{[0-9]+}}, !{{[0-9]+}}, !"callee0: %a"}
20 ; CHECK-DAG: ![[CALLEE0_B:[0-9]+]] = distinct !{!{{[0-9]+}}, !{{[0-9]+}}, !"callee0: %b"}
21 ; CHECK-DAG: ![[SCOPE]] = !{![[CALLEE0_A]], ![[CALLEE0_B]]}
23 declare void @llvm.lifetime.start.p0(i64, ptr nocapture)
24 declare void @llvm.lifetime.end.p0(i64, ptr nocapture)
25 declare void @llvm.memcpy.p0.p0.i64(ptr, ptr, i64, i1)
28 !1 = distinct !{!1, !3, !"callee0: %a"}
29 !2 = distinct !{!2, !3, !"callee0: %b"}
30 !3 = distinct !{!3, !"callee0"}
33 !5 = distinct !{!5, !6, !"callee1: %a"}
34 !6 = distinct !{!6, !"callee1"}
36 !7 = distinct !{!7, !8, !"callee2: %a"}
37 !8 = distinct !{!8, !"callee2"}