1 ; Test merging of blocks that only have PHI nodes in them
3 ; RUN: llvm-as < %s | opt -simplifycfg | llvm-dis | not grep 'N:'
6 int %test(bool %a, bool %b) {
7 br bool %a, label %M, label %O
10 br bool %b, label %N, label %Q
14 %Wp = phi int [0, %O], [1, %Q]
15 ; This block should be foldable into M
19 %W = phi int [%Wp, %N], [2, %0]