; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -O2 -S < %s -enable-new-pm=0 | FileCheck %s ; RUN: opt -passes='default' -aa-pipeline=default -S < %s | FileCheck %s define void @copy(i32* noalias %to, i32* noalias %from) { ; CHECK-LABEL: @copy( ; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[FROM:%.*]], align 4 ; CHECK-NEXT: store i32 [[X]], i32* [[TO:%.*]], align 4 ; CHECK-NEXT: ret void ; %x = load i32, i32* %from store i32 %x, i32* %to ret void } ; Consider that %addr1 = %addr2 + 1, in which case %addr2i and %addr1i are ; noalias within one iteration, but may alias across iterations. ; TODO: This is a micompile. define void @pr39282(i32* %addr1, i32* %addr2) { ; CHECK-LABEL: @pr39282( ; CHECK-NEXT: start: ; CHECK-NEXT: [[X_I:%.*]] = load i32, i32* [[ADDR1:%.*]], align 4, !alias.scope !0, !noalias !3 ; CHECK-NEXT: [[ADDR1I_1:%.*]] = getelementptr inbounds i32, i32* [[ADDR1]], i64 1 ; CHECK-NEXT: [[ADDR2I_1:%.*]] = getelementptr inbounds i32, i32* [[ADDR2:%.*]], i64 1 ; CHECK-NEXT: [[X_I_1:%.*]] = load i32, i32* [[ADDR1I_1]], align 4, !alias.scope !0, !noalias !3 ; CHECK-NEXT: store i32 [[X_I]], i32* [[ADDR2]], align 4, !alias.scope !3, !noalias !0 ; CHECK-NEXT: store i32 [[X_I_1]], i32* [[ADDR2I_1]], align 4, !alias.scope !3, !noalias !0 ; CHECK-NEXT: ret void ; start: br label %body body: %i = phi i32 [ 0, %start ], [ %i.next, %body ] %j = and i32 %i, 1 %addr1i = getelementptr inbounds i32, i32* %addr1, i32 %j %addr2i = getelementptr inbounds i32, i32* %addr2, i32 %j call void @copy(i32* %addr2i, i32* %addr1i) %i.next = add i32 %i, 1 %cmp = icmp slt i32 %i.next, 4 br i1 %cmp, label %body, label %end end: ret void }