1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -memcpyopt -S < %s -enable-memcpyopt-memoryssa=0 | FileCheck %s 3; RUN: opt -memcpyopt -S < %s -enable-memcpyopt-memoryssa=1 -verify-memoryssa | FileCheck %s 4 5target datalayout = "e-i64:64-f80:128-n8:16:32:64" 6target triple = "x86_64-unknown-linux-gnu" 7 8%S = type { i8*, i8, i32 } 9 10define void @copy(%S* %src, %S* %dst) { 11; CHECK-LABEL: @copy( 12; CHECK-NEXT: [[TMP1:%.*]] = bitcast %S* [[DST:%.*]] to i8* 13; CHECK-NEXT: [[TMP2:%.*]] = bitcast %S* [[SRC:%.*]] to i8* 14; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 8 [[TMP1]], i8* align 8 [[TMP2]], i64 16, i1 false) 15; CHECK-NEXT: ret void 16; 17 %1 = load %S, %S* %src 18 store %S %1, %S* %dst 19 ret void 20} 21 22define void @noaliassrc(%S* noalias %src, %S* %dst) { 23; CHECK-LABEL: @noaliassrc( 24; CHECK-NEXT: [[TMP1:%.*]] = bitcast %S* [[DST:%.*]] to i8* 25; CHECK-NEXT: [[TMP2:%.*]] = bitcast %S* [[SRC:%.*]] to i8* 26; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 [[TMP1]], i8* align 8 [[TMP2]], i64 16, i1 false) 27; CHECK-NEXT: ret void 28; 29 %1 = load %S, %S* %src 30 store %S %1, %S* %dst 31 ret void 32} 33 34define void @noaliasdst(%S* %src, %S* noalias %dst) { 35; CHECK-LABEL: @noaliasdst( 36; CHECK-NEXT: [[TMP1:%.*]] = bitcast %S* [[DST:%.*]] to i8* 37; CHECK-NEXT: [[TMP2:%.*]] = bitcast %S* [[SRC:%.*]] to i8* 38; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 [[TMP1]], i8* align 8 [[TMP2]], i64 16, i1 false) 39; CHECK-NEXT: ret void 40; 41 %1 = load %S, %S* %src 42 store %S %1, %S* %dst 43 ret void 44} 45 46define void @destroysrc(%S* %src, %S* %dst) { 47; CHECK-LABEL: @destroysrc( 48; CHECK-NEXT: [[TMP1:%.*]] = load [[S:%.*]], %S* [[SRC:%.*]], align 8 49; CHECK-NEXT: [[TMP2:%.*]] = bitcast %S* [[SRC]] to i8* 50; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 8 [[TMP2]], i8 0, i64 16, i1 false) 51; CHECK-NEXT: store [[S]] [[TMP1]], %S* [[DST:%.*]], align 8 52; CHECK-NEXT: ret void 53; 54 %1 = load %S, %S* %src 55 store %S zeroinitializer, %S* %src 56 store %S %1, %S* %dst 57 ret void 58} 59 60define void @destroynoaliassrc(%S* noalias %src, %S* %dst) { 61; CHECK-LABEL: @destroynoaliassrc( 62; CHECK-NEXT: [[TMP1:%.*]] = bitcast %S* [[SRC:%.*]] to i8* 63; CHECK-NEXT: [[TMP2:%.*]] = bitcast %S* [[DST:%.*]] to i8* 64; CHECK-NEXT: [[TMP3:%.*]] = bitcast %S* [[SRC]] to i8* 65; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 [[TMP2]], i8* align 8 [[TMP3]], i64 16, i1 false) 66; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 8 [[TMP1]], i8 0, i64 16, i1 false) 67; CHECK-NEXT: ret void 68; 69 %1 = load %S, %S* %src 70 store %S zeroinitializer, %S* %src 71 store %S %1, %S* %dst 72 ret void 73} 74 75define void @copyalias(%S* %src, %S* %dst) { 76; CHECK-LABEL: @copyalias( 77; CHECK-NEXT: [[TMP1:%.*]] = load [[S:%.*]], %S* [[SRC:%.*]], align 8 78; CHECK-NEXT: [[TMP2:%.*]] = bitcast %S* [[DST:%.*]] to i8* 79; CHECK-NEXT: [[TMP3:%.*]] = bitcast %S* [[SRC]] to i8* 80; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 8 [[TMP2]], i8* align 8 [[TMP3]], i64 16, i1 false) 81; CHECK-NEXT: store [[S]] [[TMP1]], %S* [[DST]], align 8 82; CHECK-NEXT: ret void 83; 84 %1 = load %S, %S* %src 85 %2 = load %S, %S* %src 86 store %S %1, %S* %dst 87 store %S %2, %S* %dst 88 ret void 89} 90 91; If the store address is computed in a complex manner, make 92; sure we lift the computation as well if needed and possible. 93define void @addrproducer(%S* %src, %S* %dst) { 94; CHECK-LABEL: @addrproducer( 95; CHECK-NEXT: [[TMP1:%.*]] = bitcast %S* [[DST:%.*]] to i8* 96; CHECK-NEXT: [[DST2:%.*]] = getelementptr [[S:%.*]], %S* [[DST]], i64 1 97; CHECK-NEXT: [[TMP2:%.*]] = bitcast %S* [[DST2]] to i8* 98; CHECK-NEXT: [[TMP3:%.*]] = bitcast %S* [[SRC:%.*]] to i8* 99; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 8 [[TMP2]], i8* align 8 [[TMP3]], i64 16, i1 false) 100; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 8 [[TMP1]], i8 undef, i64 16, i1 false) 101; CHECK-NEXT: ret void 102; 103 %1 = load %S, %S* %src 104 store %S undef, %S* %dst 105 %dst2 = getelementptr %S , %S* %dst, i64 1 106 store %S %1, %S* %dst2 107 ret void 108} 109 110define void @aliasaddrproducer(%S* %src, %S* %dst, i32* %dstidptr) { 111; CHECK-LABEL: @aliasaddrproducer( 112; CHECK-NEXT: [[TMP1:%.*]] = load [[S:%.*]], %S* [[SRC:%.*]], align 8 113; CHECK-NEXT: [[TMP2:%.*]] = bitcast %S* [[DST:%.*]] to i8* 114; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 8 [[TMP2]], i8 undef, i64 16, i1 false) 115; CHECK-NEXT: [[DSTINDEX:%.*]] = load i32, i32* [[DSTIDPTR:%.*]], align 4 116; CHECK-NEXT: [[DST2:%.*]] = getelementptr [[S]], %S* [[DST]], i32 [[DSTINDEX]] 117; CHECK-NEXT: store [[S]] [[TMP1]], %S* [[DST2]], align 8 118; CHECK-NEXT: ret void 119; 120 %1 = load %S, %S* %src 121 store %S undef, %S* %dst 122 %dstindex = load i32, i32* %dstidptr 123 %dst2 = getelementptr %S , %S* %dst, i32 %dstindex 124 store %S %1, %S* %dst2 125 ret void 126} 127 128define void @noaliasaddrproducer(%S* %src, %S* noalias %dst, i32* noalias %dstidptr) { 129; CHECK-LABEL: @noaliasaddrproducer( 130; CHECK-NEXT: [[TMP1:%.*]] = bitcast %S* [[SRC:%.*]] to i8* 131; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[DSTIDPTR:%.*]], align 4 132; CHECK-NEXT: [[DSTINDEX:%.*]] = or i32 [[TMP2]], 1 133; CHECK-NEXT: [[DST2:%.*]] = getelementptr [[S:%.*]], %S* [[DST:%.*]], i32 [[DSTINDEX]] 134; CHECK-NEXT: [[TMP3:%.*]] = bitcast %S* [[DST2]] to i8* 135; CHECK-NEXT: [[TMP4:%.*]] = bitcast %S* [[SRC]] to i8* 136; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 [[TMP3]], i8* align 8 [[TMP4]], i64 16, i1 false) 137; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 8 [[TMP1]], i8 undef, i64 16, i1 false) 138; CHECK-NEXT: ret void 139; 140 %1 = load %S, %S* %src 141 store %S undef, %S* %src 142 %2 = load i32, i32* %dstidptr 143 %dstindex = or i32 %2, 1 144 %dst2 = getelementptr %S , %S* %dst, i32 %dstindex 145 store %S %1, %S* %dst2 146 ret void 147} 148 149define void @throwing_call(%S* noalias %src, %S* %dst) { 150; CHECK-LABEL: @throwing_call( 151; CHECK-NEXT: [[TMP1:%.*]] = load [[S:%.*]], %S* [[SRC:%.*]], align 8 152; CHECK-NEXT: [[TMP2:%.*]] = bitcast %S* [[SRC]] to i8* 153; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 8 [[TMP2]], i8 0, i64 16, i1 false) 154; CHECK-NEXT: call void @call() [[ATTR2:#.*]] 155; CHECK-NEXT: store [[S]] [[TMP1]], %S* [[DST:%.*]], align 8 156; CHECK-NEXT: ret void 157; 158 %1 = load %S, %S* %src 159 store %S zeroinitializer, %S* %src 160 call void @call() readnone 161 store %S %1, %S* %dst 162 ret void 163} 164 165declare void @call() 166