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-rw-r--r--test/Transforms/LoopPreheaders/2003-04-25-AssertFail.ll3
1 files changed, 3 insertions, 0 deletions
diff --git a/test/Transforms/LoopPreheaders/2003-04-25-AssertFail.ll b/test/Transforms/LoopPreheaders/2003-04-25-AssertFail.ll
index 968c34fd17..1acc4702c0 100644
--- a/test/Transforms/LoopPreheaders/2003-04-25-AssertFail.ll
+++ b/test/Transforms/LoopPreheaders/2003-04-25-AssertFail.ll
@@ -1,3 +1,6 @@
+; This testcase exposed a problem with the loop identification pass (LoopInfo).
+; Basically, it was incorrectly calculating the loop nesting information.
+;
; RUN: as < %s | opt -preheaders
implementation ; Functions: