1; RUN: opt -tbaa -basic-aa -gvn -S < %s | FileCheck %s 2 3target datalayout = "e-p:64:64:64" 4 5; GVN should preserve the TBAA tag on loads when doing PRE. 6 7; CHECK-LABEL: @test( 8; CHECK: %tmp33.pre = load i16, i16* %P, align 2, !tbaa !0 9; CHECK: br label %for.body 10define void @test(i16 *%P, i16* %Q) nounwind { 11entry: 12 br i1 undef, label %bb.nph, label %for.end 13 14bb.nph: ; preds = %entry 15 br label %for.body 16 17for.body: ; preds = %for.body, %bb.nph 18 %tmp33 = load i16, i16* %P, align 2, !tbaa !0 19 store i16 %tmp33, i16* %Q 20 21 store i16 0, i16* %P, align 2, !tbaa !0 22 br i1 false, label %for.end, label %for.body 23 24for.end: ; preds = %for.body, %entry 25 ret void 26} 27 28!0 = !{!3, !3, i64 0} 29!1 = !{!"omnipotent char", !2} 30!2 = !{!"Simple C/C++ TBAA"} 31!3 = !{!"short", !1} 32