1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -passes="loop-idiom" < %s -S | FileCheck %s 3 4define void @looper(ptr noalias nocapture readonly %M, ptr noalias nocapture %out) { 5; CHECK-LABEL: @looper( 6; CHECK-NEXT: entry: 7; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[OUT:%.*]], ptr align 8 [[M:%.*]], i64 256, i1 false), !tbaa [[TBAA0:![0-9]+]] 8; CHECK-NEXT: br label [[FOR_BODY4:%.*]] 9; CHECK: for.body4: 10; CHECK-NEXT: [[J_020:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY4]] ] 11; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds double, ptr [[M]], i64 [[J_020]] 12; CHECK-NEXT: [[A0:%.*]] = load double, ptr [[ARRAYIDX]], align 8, !tbaa [[TBAA0]] 13; CHECK-NEXT: [[ARRAYIDX8:%.*]] = getelementptr inbounds double, ptr [[OUT]], i64 [[J_020]] 14; CHECK-NEXT: [[INC]] = add nuw nsw i64 [[J_020]], 1 15; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i64 [[J_020]], 31 16; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_BODY4]], label [[FOR_COND_CLEANUP:%.*]] 17; CHECK: for.cond.cleanup: 18; CHECK-NEXT: ret void 19; 20entry: 21 br label %for.body4 22 23for.body4: ; preds = %for.cond1.preheader, %for.body4 24 %j.020 = phi i64 [ 0, %entry ], [ %inc, %for.body4 ] 25 %arrayidx = getelementptr inbounds double, ptr %M, i64 %j.020 26 %a0 = load double, ptr %arrayidx, align 8, !tbaa !5 27 %arrayidx8 = getelementptr inbounds double, ptr %out, i64 %j.020 28 store double %a0, ptr %arrayidx8, align 8, !tbaa !5 29 %inc = add nuw nsw i64 %j.020, 1 30 %cmp2 = icmp ult i64 %j.020, 31 31 br i1 %cmp2, label %for.body4, label %for.cond.cleanup 32 33for.cond.cleanup: ; preds = %for.cond.cleanup3 34 ret void 35} 36 37 38define void @looperBadMerge(ptr noalias nocapture readonly %M, ptr noalias nocapture %out) { 39; CHECK-LABEL: @looperBadMerge( 40; CHECK-NEXT: entry: 41; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[OUT:%.*]], ptr align 8 [[M:%.*]], i64 256, i1 false), !tbaa [[TBAA4:![0-9]+]] 42; CHECK-NEXT: br label [[FOR_BODY4:%.*]] 43; CHECK: for.body4: 44; CHECK-NEXT: [[J_020:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY4]] ] 45; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds double, ptr [[M]], i64 [[J_020]] 46; CHECK-NEXT: [[A0:%.*]] = load double, ptr [[ARRAYIDX]], align 8, !tbaa [[TBAA0]] 47; CHECK-NEXT: [[ARRAYIDX8:%.*]] = getelementptr inbounds double, ptr [[OUT]], i64 [[J_020]] 48; CHECK-NEXT: [[INC]] = add nuw nsw i64 [[J_020]], 1 49; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i64 [[J_020]], 31 50; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_BODY4]], label [[FOR_COND_CLEANUP:%.*]] 51; CHECK: for.cond.cleanup: 52; CHECK-NEXT: ret void 53; 54entry: 55 br label %for.body4 56 57for.body4: ; preds = %for.cond1.preheader, %for.body4 58 %j.020 = phi i64 [ 0, %entry ], [ %inc, %for.body4 ] 59 %arrayidx = getelementptr inbounds double, ptr %M, i64 %j.020 60 %a0 = load double, ptr %arrayidx, align 8, !tbaa !5 61 %arrayidx8 = getelementptr inbounds double, ptr %out, i64 %j.020 62 store double %a0, ptr %arrayidx8, align 8, !tbaa !3 63 %inc = add nuw nsw i64 %j.020, 1 64 %cmp2 = icmp ult i64 %j.020, 31 65 br i1 %cmp2, label %for.body4, label %for.cond.cleanup 66 67for.cond.cleanup: ; preds = %for.cond.cleanup3 68 ret void 69} 70 71define void @looperGoodMerge(ptr noalias nocapture readonly %M, ptr noalias nocapture %out) { 72; CHECK-LABEL: @looperGoodMerge( 73; CHECK-NEXT: entry: 74; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[OUT:%.*]], ptr align 8 [[M:%.*]], i64 256, i1 false) 75; CHECK-NEXT: br label [[FOR_BODY4:%.*]] 76; CHECK: for.body4: 77; CHECK-NEXT: [[J_020:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY4]] ] 78; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds double, ptr [[M]], i64 [[J_020]] 79; CHECK-NEXT: [[A0:%.*]] = load double, ptr [[ARRAYIDX]], align 8, !tbaa [[TBAA0]] 80; CHECK-NEXT: [[ARRAYIDX8:%.*]] = getelementptr inbounds double, ptr [[OUT]], i64 [[J_020]] 81; CHECK-NEXT: [[INC]] = add nuw nsw i64 [[J_020]], 1 82; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i64 [[J_020]], 31 83; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_BODY4]], label [[FOR_COND_CLEANUP:%.*]] 84; CHECK: for.cond.cleanup: 85; CHECK-NEXT: ret void 86; 87entry: 88 br label %for.body4 89 90for.body4: ; preds = %for.cond1.preheader, %for.body4 91 %j.020 = phi i64 [ 0, %entry ], [ %inc, %for.body4 ] 92 %arrayidx = getelementptr inbounds double, ptr %M, i64 %j.020 93 %a0 = load double, ptr %arrayidx, align 8, !tbaa !5 94 %arrayidx8 = getelementptr inbounds double, ptr %out, i64 %j.020 95 store double %a0, ptr %arrayidx8, align 8 96 %inc = add nuw nsw i64 %j.020, 1 97 %cmp2 = icmp ult i64 %j.020, 31 98 br i1 %cmp2, label %for.body4, label %for.cond.cleanup 99 100for.cond.cleanup: ; preds = %for.cond.cleanup3 101 ret void 102} 103 104define void @looperConstantTBAAStruct(ptr nocapture noalias %out, ptr nocapture noalias %in) { 105; CHECK-LABEL: @looperConstantTBAAStruct( 106; CHECK-NEXT: entry: 107; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[OUT:%.*]], ptr align 8 [[IN:%.*]], i64 32, i1 false), !tbaa [[TBAA5:![0-9]+]] 108; CHECK-NEXT: br label [[FOR_BODY4:%.*]] 109; CHECK: for.body4: 110; CHECK-NEXT: [[J_020:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY4]] ] 111; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds double, ptr [[IN]], i64 [[J_020]] 112; CHECK-NEXT: [[A0:%.*]] = load double, ptr [[ARRAYIDX]], align 8, !tbaa [[TBAA9:![0-9]+]] 113; CHECK-NEXT: [[ARRAYIDX8:%.*]] = getelementptr inbounds double, ptr [[OUT]], i64 [[J_020]] 114; CHECK-NEXT: [[INC]] = add nuw nsw i64 [[J_020]], 1 115; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i64 [[J_020]], 3 116; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_BODY4]], label [[FOR_COND_CLEANUP:%.*]] 117; CHECK: for.cond.cleanup: 118; CHECK-NEXT: ret void 119; 120entry: 121 br label %for.body4 122 123for.body4: ; preds = %for.cond1.preheader, %for.body4 124 %j.020 = phi i64 [ 0, %entry ], [ %inc, %for.body4 ] 125 %arrayidx = getelementptr inbounds double, ptr %in, i64 %j.020 126 %a0 = load double, ptr %arrayidx, align 8, !tbaa !10 127 %arrayidx8 = getelementptr inbounds double, ptr %out, i64 %j.020 128 store double %a0, ptr %arrayidx8, align 8, !tbaa !10 129 %inc = add nuw nsw i64 %j.020, 1 130 %cmp2 = icmp ult i64 %j.020, 3 131 br i1 %cmp2, label %for.body4, label %for.cond.cleanup 132 133for.cond.cleanup: ; preds = %for.cond.cleanup3 134 ret void 135} 136 137define void @looperVarTBAAStruct(ptr nocapture noalias %out, ptr nocapture noalias %in, i64 %len) { 138; CHECK-LABEL: @looperVarTBAAStruct( 139; CHECK-NEXT: entry: 140; CHECK-NEXT: [[UMAX:%.*]] = call i64 @llvm.umax.i64(i64 [[LEN:%.*]], i64 1) 141; CHECK-NEXT: [[TMP0:%.*]] = shl nuw i64 [[UMAX]], 3 142; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[OUT:%.*]], ptr align 8 [[IN:%.*]], i64 [[TMP0]], i1 false) 143; CHECK-NEXT: br label [[FOR_BODY4:%.*]] 144; CHECK: for.body4: 145; CHECK-NEXT: [[J_020:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY4]] ] 146; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds double, ptr [[IN]], i64 [[J_020]] 147; CHECK-NEXT: [[A0:%.*]] = load double, ptr [[ARRAYIDX]], align 8, !tbaa [[TBAA9]] 148; CHECK-NEXT: [[ARRAYIDX8:%.*]] = getelementptr inbounds double, ptr [[OUT]], i64 [[J_020]] 149; CHECK-NEXT: [[INC]] = add nuw nsw i64 [[J_020]], 1 150; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i64 [[INC]], [[LEN]] 151; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_BODY4]], label [[FOR_COND_CLEANUP:%.*]] 152; CHECK: for.cond.cleanup: 153; CHECK-NEXT: ret void 154; 155entry: 156 br label %for.body4 157 158for.body4: ; preds = %for.cond1.preheader, %for.body4 159 %j.020 = phi i64 [ 0, %entry ], [ %inc, %for.body4 ] 160 %arrayidx = getelementptr inbounds double, ptr %in, i64 %j.020 161 %a0 = load double, ptr %arrayidx, align 8, !tbaa !10 162 %arrayidx8 = getelementptr inbounds double, ptr %out, i64 %j.020 163 store double %a0, ptr %arrayidx8, align 8, !tbaa !10 164 %inc = add nuw nsw i64 %j.020, 1 165 %cmp2 = icmp ult i64 %inc, %len 166 br i1 %cmp2, label %for.body4, label %for.cond.cleanup 167 168for.cond.cleanup: ; preds = %for.cond.cleanup3 169 ret void 170} 171 172 173 174 175!3 = !{!4, !4, i64 0} 176!4 = !{!"float", !7, i64 0} 177!5 = !{!6, !6, i64 0} 178!6 = !{!"double", !7, i64 0} 179!7 = !{!"omnipotent char", !8, i64 0} 180!8 = !{!"Simple C++ TBAA"} 181 182!15 = !{!8, i64 0, !"omnipotent char"} 183!17 = !{!15, i64 8, !"double"} 184!9 = !{!15, i64 32, !"_ZTS1A", !17, i64 0, i64 8, !17, i64 8, i64 8, !17, i64 16, i64 8, !17, i64 24, i64 8} 185!10 = !{!9, !17, i64 0, i64 8} 186