1 ; Test merging of blocks that only have PHI nodes in them
3 ; RUN: if as < %s | opt -simplifycfg | dis | grep 'N:'
9 int %test(bool %a, bool %b) {
10 br bool %a, label %M, label %O
13 br bool %b, label %N, label %Q
17 %Wp = phi int [0, %O], [1, %Q]
18 ; This block should be foldable into M
22 %W = phi int [%Wp, %N], [2, %0]