1 ; RUN: opt -memcpyopt -S < %s | FileCheck %s
3 target datalayout = "e-i64:64-f80:128-n8:16:32:64"
4 target triple = "x86_64-unknown-linux-gnu"
8 define void @copy(%S* %src, %S* %dst) {
11 ; CHECK: call void @llvm.memmove.p0i8.p0i8.i64
12 ; CHECK-NEXT: ret void
13 %1 = load %S, %S* %src
18 define void @noaliassrc(%S* noalias %src, %S* %dst) {
19 ; CHECK-LABEL: noaliassrc
21 ; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
22 ; CHECK-NEXT: ret void
23 %1 = load %S, %S* %src
28 define void @noaliasdst(%S* %src, %S* noalias %dst) {
29 ; CHECK-LABEL: noaliasdst
31 ; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
32 ; CHECK-NEXT: ret void
33 %1 = load %S, %S* %src
38 define void @destroysrc(%S* %src, %S* %dst) {
39 ; CHECK-LABEL: destroysrc
42 %1 = load %S, %S* %src
43 store %S zeroinitializer, %S* %src
48 define void @destroynoaliassrc(%S* noalias %src, %S* %dst) {
49 ; CHECK-LABEL: destroynoaliassrc
51 ; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
52 ; CHECK-NEXT: store %S zeroinitializer, %S* %src
53 ; CHECK-NEXT: ret void
54 %1 = load %S, %S* %src
55 store %S zeroinitializer, %S* %src
60 define void @copyalias(%S* %src, %S* %dst) {
61 ; CHECK-LABEL: copyalias
62 ; CHECK-NEXT: [[LOAD:%[a-z0-9\.]+]] = load %S, %S* %src
64 ; CHECK: call void @llvm.memmove.p0i8.p0i8.i64
65 ; CHECK-NEXT: store %S [[LOAD]], %S* %dst
66 ; CHECK-NEXT: ret void
67 %1 = load %S, %S* %src
68 %2 = load %S, %S* %src