make this test less trivial.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131845 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/GVN/preserve-tbaa.ll b/test/Transforms/GVN/preserve-tbaa.ll
index 2fcfc471c5d2bb51da744de50213a397af379b4c..a93675556cde6b51dd72432b753227e68e619f8e 100644 (file)
--- a/test/Transforms/GVN/preserve-tbaa.ll
+++ b/test/Transforms/GVN/preserve-tbaa.ll
@@ -5,9 +5,9 @@ target datalayout = "e-p:64:64:64"
 ; GVN should preserve the TBAA tag on loads when doing PRE.
 
 ; CHECK: @test
-; CHECK: %tmp33.pre = load i16* undef, align 2, !tbaa !0
+; CHECK: %tmp33.pre = load i16* %P, align 2, !tbaa !0
 ; CHECK: br label %for.body
-define void @test() nounwind {
+define void @test(i16 *%P, i16* %Q) nounwind {
 entry:
   br i1 undef, label %bb.nph, label %for.end
 
@@ -15,8 +15,10 @@ bb.nph:                                           ; preds = %entry
   br label %for.body
 
 for.body:                                         ; preds = %for.body, %bb.nph
-  %tmp33 = load i16* undef, align 2, !tbaa !0
-  store i16 undef, i16* undef, align 2, !tbaa !0
+  %tmp33 = load i16* %P, align 2, !tbaa !0
+  store i16 %tmp33, i16* %Q
+
+  store i16 0, i16* %P, align 2, !tbaa !0
   br i1 false, label %for.end, label %for.body
 
 for.end:                                          ; preds = %for.body, %entry