1 ; RUN: opt < %s -analyze -scalar-evolution 2>&1 | FileCheck %s
6 ; This is a tricky testcase for unsigned wrap detection which ScalarEvolution
7 ; doesn't yet know how to do.
9 define i32 @f(i32 %x) nounwind readnone {
11 %0 = icmp ugt i32 %x, 999 ; <i1> [#uses=1]
12 br i1 %0, label %bb2, label %bb.nph
14 bb.nph: ; preds = %entry
17 bb: ; preds = %bb.nph, %bb1
18 %indvar = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb1 ] ; <i32> [#uses=2]
19 %tmp = mul i32 %indvar, 3 ; <i32> [#uses=1]
20 %x_addr.04 = add i32 %tmp, %x ; <i32> [#uses=1]
21 %1 = add i32 %x_addr.04, 3 ; <i32> [#uses=2]
25 %2 = icmp ugt i32 %1, 999 ; <i1> [#uses=1]
26 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1]
27 br i1 %2, label %bb1.bb2_crit_edge, label %bb
29 bb1.bb2_crit_edge: ; preds = %bb1
30 %.lcssa = phi i32 [ %1, %bb1 ] ; <i32> [#uses=1]
33 bb2: ; preds = %bb1.bb2_crit_edge, %entry
34 %x_addr.0.lcssa = phi i32 [ %.lcssa, %bb1.bb2_crit_edge ], [ %x, %entry ] ; <i32> [#uses=1]
35 ret i32 %x_addr.0.lcssa