| ; RUN: opt -jump-threading -disable-output %s |
| ; PR9112 |
| |
| ; This is actually a test for value tracking. Jump threading produces |
| ; "%phi = phi i16" when it removes all edges leading to %unreachable. |
| ; The .ll parser won't let us write that directly since it's invalid code. |
| |
| define void @func() nounwind { |
| entry: |
| br label %bb |
| |
| bb: |
| br label %bb |
| |
| unreachable: |
| %phi = phi i16 [ %add, %unreachable ], [ 0, %next ] |
| %add = add i16 0, %phi |
| %cmp = icmp slt i16 %phi, 0 |
| br i1 %cmp, label %unreachable, label %next |
| |
| next: |
| br label %unreachable |
| } |
| |
