1 ; RUN: opt < %s -analyze -scalar-evolution |& grep {/u 3}
4 ; This is a tricky testcase for unsigned wrap detection which ScalarEvolution
5 ; doesn't yet know how to do.
7 define i32 @f(i32 %x) nounwind readnone {
9 %0 = icmp ugt i32 %x, 999 ; <i1> [#uses=1]
10 br i1 %0, label %bb2, label %bb.nph
12 bb.nph: ; preds = %entry
15 bb: ; preds = %bb.nph, %bb1
16 %indvar = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb1 ] ; <i32> [#uses=2]
17 %tmp = mul i32 %indvar, 3 ; <i32> [#uses=1]
18 %x_addr.04 = add i32 %tmp, %x ; <i32> [#uses=1]
19 %1 = add i32 %x_addr.04, 3 ; <i32> [#uses=2]
23 %2 = icmp ugt i32 %1, 999 ; <i1> [#uses=1]
24 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1]
25 br i1 %2, label %bb1.bb2_crit_edge, label %bb
27 bb1.bb2_crit_edge: ; preds = %bb1
28 %.lcssa = phi i32 [ %1, %bb1 ] ; <i32> [#uses=1]
31 bb2: ; preds = %bb1.bb2_crit_edge, %entry
32 %x_addr.0.lcssa = phi i32 [ %.lcssa, %bb1.bb2_crit_edge ], [ %x, %entry ] ; <i32> [#uses=1]
33 ret i32 %x_addr.0.lcssa