1; RUN: opt < %s -S -memcpyopt | FileCheck --match-full-lines %s 2 3; Alias scopes are merged by taking the intersection of domains, then the union of the scopes within those domains 4define i8 @test(i8 %input) { 5 %tmp = alloca i8 6 %dst = alloca i8 7 %src = alloca i8 8; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %dst, i8* align 8 %src, i64 1, i1 false), !alias.scope ![[SCOPE:[0-9]+]] 9 call void @llvm.lifetime.start.p0i8(i64 8, i8* nonnull %src), !noalias !4 10 store i8 %input, i8* %src 11 call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %tmp, i8* align 8 %src, i64 1, i1 false), !alias.scope !0 12 call void @llvm.lifetime.end.p0i8(i64 8, i8* nonnull %src), !noalias !4 13 call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %dst, i8* align 8 %tmp, i64 1, i1 false), !alias.scope !4 14 %ret_value = load i8, i8* %dst 15 ret i8 %ret_value 16} 17 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]]} 22 23declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) 24declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) 25declare void @llvm.memcpy.p0i8.p0i8.i64(i8*, i8*, i64, i1) 26 27!0 = !{!1, !7} 28!1 = distinct !{!1, !3, !"callee0: %a"} 29!2 = distinct !{!2, !3, !"callee0: %b"} 30!3 = distinct !{!3, !"callee0"} 31 32!4 = !{!2, !5} 33!5 = distinct !{!5, !6, !"callee1: %a"} 34!6 = distinct !{!6, !"callee1"} 35 36!7 = distinct !{!7, !8, !"callee2: %a"} 37!8 = distinct !{!8, !"callee2"} 38