; RUN: llvm-as < %s | opt -reassociate -disable-output
define void @foo() {
%tmp162 = sub <4 x float> zeroinitializer, zeroinitializer ; <<4 x float>> [#uses=1]
%tmp164 = mul <4 x float> zeroinitializer, %tmp162 ; <<4 x float>> [#uses=0]
ret void
}