Add a comment to this test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102387 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Analysis/ScalarEvolution/2008-11-18-Stride2.ll b/test/Analysis/ScalarEvolution/2008-11-18-Stride2.ll
index 102acc65650fdcfd353f06b7c8a69de14f0fe0b5..fa9f21af3713e4563231a5fc0fe4829064ee230b 100644 (file)
--- a/test/Analysis/ScalarEvolution/2008-11-18-Stride2.ll
+++ b/test/Analysis/ScalarEvolution/2008-11-18-Stride2.ll
@@ -1,6 +1,9 @@
 ; RUN: opt < %s -analyze -scalar-evolution |& grep {/u 3}
 ; XFAIL: *
 
+; This is a tricky testcase for unsigned wrap detection which ScalarEvolution
+; doesn't yet know how to do.
+
 define i32 @f(i32 %x) nounwind readnone {
 entry:
        %0 = icmp ugt i32 %x, 999               ; <i1> [#uses=1]