| ; 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 | |
| } | |