new testcase for PR1286

llvm-svn: 35787

llvm/test/Transforms/InstCombine/vec_insertelt.ll

@@ -0,0 +1,7 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep 'ret <4 x i32> %A'
+
+; PR1286
+define <4 x i32> @test1(<4 x i32> %A) {
+	%B = insertelement <4 x i32> %A, i32 undef, i32 1
+	ret <4 x i32> %B
+}