New testcase for trivial DSE

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28502 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/store.ll b/test/Transforms/InstCombine/store.ll
index 6982e0deb0635aa215c8b51fe0d45aa9797e6f75..d2442fa95f3e37e681aac6dc7e9b35bf6ddf086f 100644 (file)
--- a/test/Transforms/InstCombine/store.ll
+++ b/test/Transforms/InstCombine/store.ll
@@ -1,9 +1,16 @@
+; RUN: llvm-as < %s | opt -instcombine -disable-output &&
 ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep -v 'store.*,.*null' | not grep store
 
-
 void %test1(int* %P) {
        store int undef, int* %P
        store int 123, int* undef
        store int 124, int* null
        ret void
 }
+
+void %test2(int* %P) {
+       %X = load int* %P
+       %Y = add int %X, 0
+       store int %Y, int* %P
+       ret void
+}