1 ; RUN: opt -jump-threading -disable-output %s 2 ; PR9112 3 4 ; This is actually a test for value tracking. Jump threading produces 5 ; "%phi = phi i16" when it removes all edges leading to %unreachable. 6 ; The .ll parser won't let us write that directly since it's invalid code. 7 8 define void @func() nounwind { 9 entry: 10 br label %bb 11 12 bb: 13 br label %bb 14 15 unreachable: 16 %phi = phi i16 [ %add, %unreachable ], [ 0, %next ] 17 %add = add i16 0, %phi 18 %cmp = icmp slt i16 %phi, 0 19 br i1 %cmp, label %unreachable, label %next 20 21 next: 22 br label %unreachable 23 } 24 25
