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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -passes='default<O2>' -S < %s | FileCheck %s3 4define void @copy(ptr noalias %to, ptr noalias %from) {5; CHECK-LABEL: @copy(6; CHECK-NEXT: [[X:%.*]] = load i32, ptr [[FROM:%.*]], align 47; CHECK-NEXT: store i32 [[X]], ptr [[TO:%.*]], align 48; CHECK-NEXT: ret void9;10 %x = load i32, ptr %from11 store i32 %x, ptr %to12 ret void13}14 15; Consider that %addr1 = %addr2 + 1, in which case %addr2i and %addr1i are16; noalias within one iteration, but may alias across iterations.17define void @pr39282(ptr %addr1, ptr %addr2) {18; CHECK-LABEL: @pr39282(19; CHECK-NEXT: start:20; CHECK-NEXT: tail call void @llvm.experimental.noalias.scope.decl(metadata [[META0:![0-9]+]])21; CHECK-NEXT: tail call void @llvm.experimental.noalias.scope.decl(metadata [[META3:![0-9]+]])22; CHECK-NEXT: [[X_I:%.*]] = load i32, ptr [[ADDR1:%.*]], align 4, !alias.scope [[META3]], !noalias [[META0]]23; CHECK-NEXT: store i32 [[X_I]], ptr [[ADDR2:%.*]], align 4, !alias.scope [[META0]], !noalias [[META3]]24; CHECK-NEXT: [[ADDR1I_1:%.*]] = getelementptr inbounds nuw i8, ptr [[ADDR1]], i64 425; CHECK-NEXT: [[ADDR2I_1:%.*]] = getelementptr inbounds nuw i8, ptr [[ADDR2]], i64 426; CHECK-NEXT: tail call void @llvm.experimental.noalias.scope.decl(metadata [[META5:![0-9]+]])27; CHECK-NEXT: tail call void @llvm.experimental.noalias.scope.decl(metadata [[META7:![0-9]+]])28; CHECK-NEXT: [[X_I_1:%.*]] = load i32, ptr [[ADDR1I_1]], align 4, !alias.scope [[META7]], !noalias [[META5]]29; CHECK-NEXT: store i32 [[X_I_1]], ptr [[ADDR2I_1]], align 4, !alias.scope [[META5]], !noalias [[META7]]30; CHECK-NEXT: tail call void @llvm.experimental.noalias.scope.decl(metadata [[META9:![0-9]+]])31; CHECK-NEXT: tail call void @llvm.experimental.noalias.scope.decl(metadata [[META11:![0-9]+]])32; CHECK-NEXT: [[X_I_2:%.*]] = load i32, ptr [[ADDR1]], align 4, !alias.scope [[META11]], !noalias [[META9]]33; CHECK-NEXT: store i32 [[X_I_2]], ptr [[ADDR2]], align 4, !alias.scope [[META9]], !noalias [[META11]]34; CHECK-NEXT: tail call void @llvm.experimental.noalias.scope.decl(metadata [[META13:![0-9]+]])35; CHECK-NEXT: tail call void @llvm.experimental.noalias.scope.decl(metadata [[META15:![0-9]+]])36; CHECK-NEXT: [[X_I_3:%.*]] = load i32, ptr [[ADDR1I_1]], align 4, !alias.scope [[META15]], !noalias [[META13]]37; CHECK-NEXT: store i32 [[X_I_3]], ptr [[ADDR2I_1]], align 4, !alias.scope [[META13]], !noalias [[META15]]38; CHECK-NEXT: ret void39;40start:41 br label %body42 43body:44 %i = phi i32 [ 0, %start ], [ %i.next, %body ]45 %j = and i32 %i, 146 %addr1i = getelementptr inbounds i32, ptr %addr1, i32 %j47 %addr2i = getelementptr inbounds i32, ptr %addr2, i32 %j48 call void @copy(ptr %addr2i, ptr %addr1i)49 %i.next = add i32 %i, 150 %cmp = icmp slt i32 %i.next, 451 br i1 %cmp, label %body, label %end52 53end:54 ret void55}56