1 ; RUN: opt -tbaa -basicaa -gvn -S < %s | FileCheck %s
3 target datalayout = "e-p:64:64:64"
5 ; GVN should preserve the TBAA tag on loads when doing PRE.
8 ; CHECK: %tmp33.pre = load i16* undef, align 2, !tbaa !0
9 ; CHECK: br label %for.body
10 define void @test() nounwind {
12 br i1 undef, label %bb.nph, label %for.end
14 bb.nph: ; preds = %entry
17 for.body: ; preds = %for.body, %bb.nph
18 %tmp33 = load i16* undef, align 2, !tbaa !0
19 store i16 undef, i16* undef, align 2, !tbaa !0
20 br i1 false, label %for.end, label %for.body
22 for.end: ; preds = %for.body, %entry
26 !0 = metadata !{metadata !"short", metadata !1}
27 !1 = metadata !{metadata !"omnipotent char", metadata !2}
28 !2 = metadata !{metadata !"Simple C/C++ TBAA", null}