| ; RUN: opt -regions -analyze < %s | FileCheck %s |
| ; RUN: opt < %s -passes='print<regions>' 2>&1 | FileCheck %s |
| |
| ; We should not crash if there are some bbs that are not reachable. |
| define void @f() { |
| entry: |
| br label %for.pre |
| |
| notintree: ; No predecessors! |
| br label %ret |
| |
| for.pre: ; preds = %entry |
| br label %for |
| |
| for: ; preds = %for.inc, %for.pre |
| %indvar = phi i64 [ 0, %for.pre ], [ %indvar.next, %for.inc ] |
| %exitcond = icmp ne i64 %indvar, 200 |
| br i1 %exitcond, label %for.inc, label %ret |
| |
| for.inc: ; preds = %for |
| %indvar.next = add i64 %indvar, 1 |
| br label %for |
| |
| ret: ; preds = %for, %notintree |
| ret void |
| } |
| |
| ; CHECK: [0] entry => <Function Return> |
| ; CHECK: [1] for => ret |
| |
