2 ; RUN: opt < %s -loop-unswitch -stats -disable-output 2>&1 | grep "1 loop-unswitch - Number of branches unswitched" | count 1
4 define i32 @a(i32 %x, i32 %y) nounwind {
6 %0 = icmp ult i32 0, %y ; <i1> [#uses=1]
7 br i1 %0, label %bb.nph, label %bb4
9 bb.nph: ; preds = %entry
10 %1 = icmp eq i32 %x, 0 ; <i1> [#uses=1]
13 bb: ; preds = %bb.nph, %bb3
14 %i.01 = phi i32 [ %3, %bb3 ], [ 0, %bb.nph ] ; <i32> [#uses=1]
15 br i1 %1, label %bb2, label %bb1
18 %2 = tail call i32 (...) @b() nounwind ; <i32> [#uses=0]
21 bb2: ; preds = %bb, %bb1
22 %3 = add i32 %i.01, 1 ; <i32> [#uses=2]
26 %i.0 = phi i32 [ %3, %bb2 ] ; <i32> [#uses=1]
27 %4 = icmp ult i32 %i.0, %y ; <i1> [#uses=1]
28 br i1 %4, label %bb, label %bb3.bb4_crit_edge
30 bb3.bb4_crit_edge: ; preds = %bb3
33 bb4: ; preds = %bb3.bb4_crit_edge, %entry