1*9880d681SAndroid Build Coastguard Worker; RUN: opt -tbaa -basicaa -gvn -S < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-p:64:64:64" 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker; GVN should preserve the TBAA tag on loads when doing PRE. 6*9880d681SAndroid Build Coastguard Worker 7*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test( 8*9880d681SAndroid Build Coastguard Worker; CHECK: %tmp33.pre = load i16, i16* %P, align 2, !tbaa !0 9*9880d681SAndroid Build Coastguard Worker; CHECK: br label %for.body 10*9880d681SAndroid Build Coastguard Workerdefine void @test(i16 *%P, i16* %Q) nounwind { 11*9880d681SAndroid Build Coastguard Workerentry: 12*9880d681SAndroid Build Coastguard Worker br i1 undef, label %bb.nph, label %for.end 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Workerbb.nph: ; preds = %entry 15*9880d681SAndroid Build Coastguard Worker br label %for.body 16*9880d681SAndroid Build Coastguard Worker 17*9880d681SAndroid Build Coastguard Workerfor.body: ; preds = %for.body, %bb.nph 18*9880d681SAndroid Build Coastguard Worker %tmp33 = load i16, i16* %P, align 2, !tbaa !0 19*9880d681SAndroid Build Coastguard Worker store i16 %tmp33, i16* %Q 20*9880d681SAndroid Build Coastguard Worker 21*9880d681SAndroid Build Coastguard Worker store i16 0, i16* %P, align 2, !tbaa !0 22*9880d681SAndroid Build Coastguard Worker br i1 false, label %for.end, label %for.body 23*9880d681SAndroid Build Coastguard Worker 24*9880d681SAndroid Build Coastguard Workerfor.end: ; preds = %for.body, %entry 25*9880d681SAndroid Build Coastguard Worker ret void 26*9880d681SAndroid Build Coastguard Worker} 27*9880d681SAndroid Build Coastguard Worker 28*9880d681SAndroid Build Coastguard Worker!0 = !{!3, !3, i64 0} 29*9880d681SAndroid Build Coastguard Worker!1 = !{!"omnipotent char", !2} 30*9880d681SAndroid Build Coastguard Worker!2 = !{!"Simple C/C++ TBAA", null} 31*9880d681SAndroid Build Coastguard Worker!3 = !{!"short", !1} 32