| ; RUN: opt -memcpyopt -S < %s | FileCheck %s |
| |
| target datalayout = "e-i64:64-f80:128-n8:16:32:64" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %S = type { i8*, i8, i32 } |
| |
| define void @copy(%S* %src, %S* %dst) { |
| ; CHECK-LABEL: copy |
| ; CHECK-NOT: load |
| ; CHECK: call void @llvm.memmove.p0i8.p0i8.i64 |
| ; CHECK-NEXT: ret void |
| %1 = load %S, %S* %src |
| store %S %1, %S* %dst |
| ret void |
| } |
| |
| define void @noaliassrc(%S* noalias %src, %S* %dst) { |
| ; CHECK-LABEL: noaliassrc |
| ; CHECK-NOT: load |
| ; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64 |
| ; CHECK-NEXT: ret void |
| %1 = load %S, %S* %src |
| store %S %1, %S* %dst |
| ret void |
| } |
| |
| define void @noaliasdst(%S* %src, %S* noalias %dst) { |
| ; CHECK-LABEL: noaliasdst |
| ; CHECK-NOT: load |
| ; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64 |
| ; CHECK-NEXT: ret void |
| %1 = load %S, %S* %src |
| store %S %1, %S* %dst |
| ret void |
| } |
| |
| define void @destroysrc(%S* %src, %S* %dst) { |
| ; CHECK-LABEL: destroysrc |
| ; CHECK: load %S, %S* %src |
| ; CHECK: call void @llvm.memset.p0i8.i64 |
| ; CHECK-NEXT: store %S %1, %S* %dst |
| ; CHECK-NEXT: ret void |
| %1 = load %S, %S* %src |
| store %S zeroinitializer, %S* %src |
| store %S %1, %S* %dst |
| ret void |
| } |
| |
| define void @destroynoaliassrc(%S* noalias %src, %S* %dst) { |
| ; CHECK-LABEL: destroynoaliassrc |
| ; CHECK-NOT: load |
| ; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64 |
| ; CHECK-NEXT: call void @llvm.memset.p0i8.i64 |
| ; CHECK-NEXT: ret void |
| %1 = load %S, %S* %src |
| store %S zeroinitializer, %S* %src |
| store %S %1, %S* %dst |
| ret void |
| } |
| |
| define void @copyalias(%S* %src, %S* %dst) { |
| ; CHECK-LABEL: copyalias |
| ; CHECK-NEXT: [[LOAD:%[a-z0-9\.]+]] = load %S, %S* %src |
| ; CHECK-NOT: load |
| ; CHECK: call void @llvm.memmove.p0i8.p0i8.i64 |
| ; CHECK-NEXT: store %S [[LOAD]], %S* %dst |
| ; CHECK-NEXT: ret void |
| %1 = load %S, %S* %src |
| %2 = load %S, %S* %src |
| store %S %1, %S* %dst |
| store %S %2, %S* %dst |
| ret void |
| } |
| |
| ; If the store address is computed ina complex manner, make |
| ; sure we lift the computation as well if needed and possible. |
| define void @addrproducer(%S* %src, %S* %dst) { |
| ; CHECK-LABEL: addrproducer |
| ; CHECK: %dst2 = getelementptr %S, %S* %dst, i64 1 |
| ; CHECK: call void @llvm.memmove.p0i8.p0i8.i64 |
| ; CHECK-NEXT: store %S undef, %S* %dst |
| ; CHECK-NEXT: ret void |
| %1 = load %S, %S* %src |
| store %S undef, %S* %dst |
| %dst2 = getelementptr %S , %S* %dst, i64 1 |
| store %S %1, %S* %dst2 |
| ret void |
| } |
| |
| define void @aliasaddrproducer(%S* %src, %S* %dst, i32* %dstidptr) { |
| ; CHECK-LABEL: aliasaddrproducer |
| %1 = load %S, %S* %src |
| store %S undef, %S* %dst |
| %dstindex = load i32, i32* %dstidptr |
| %dst2 = getelementptr %S , %S* %dst, i32 %dstindex |
| store %S %1, %S* %dst2 |
| ret void |
| } |
| |
| define void @noaliasaddrproducer(%S* %src, %S* noalias %dst, i32* noalias %dstidptr) { |
| ; CHECK-LABEL: noaliasaddrproducer |
| %1 = load %S, %S* %src |
| store %S undef, %S* %src |
| %2 = load i32, i32* %dstidptr |
| %dstindex = or i32 %2, 1 |
| %dst2 = getelementptr %S , %S* %dst, i32 %dstindex |
| store %S %1, %S* %dst2 |
| ret void |
| } |