1; This testcase exposed a problem with the loop identification pass (LoopInfo).
2; Basically, it was incorrectly calculating the loop nesting information.
3;
4; RUN: opt < %s -loop-simplify
5
6define i32 @yylex() {
7	br label %loopentry.0
8loopentry.0:		; preds = %else.4, %0
9	br label %loopexit.2
10loopexit.2:		; preds = %else.4, %loopexit.2, %loopentry.0
11	br i1 false, label %loopexit.2, label %else.4
12yy_find_action:		; preds = %else.4
13	br label %else.4
14else.4:		; preds = %yy_find_action, %loopexit.2
15	switch i32 0, label %loopexit.2 [
16		 i32 2, label %yy_find_action
17		 i32 0, label %loopentry.0
18	]
19}
20
21