1; RUN: opt < %s -jump-threading -S | grep "ret i32 0"
2; PR3138
3
4define i32 @jt() {
5entry:
6       br i1 true, label %bb3, label %bb
7
8bb:             ; preds = %entry
9       unreachable
10
11bb3:            ; preds = %entry
12       ret i32 0
13}
14