111 lines
2.9 KiB
LLVM
111 lines
2.9 KiB
LLVM
; 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
|
|
}
|