Vendor import of llvm trunk r161861:

http://llvm.org/svn/llvm-project/llvm/trunk@161861

1 files changed, 21 insertions, 0 deletions

diff --git a/test/Transforms/Reassociate/2012-06-08-InfiniteLoop.ll b/test/Transforms/Reassociate/2012-06-08-InfiniteLoop.ll
new file mode 100644
index 0000000..6e62a28
--- /dev/null
+++ b/test/Transforms/Reassociate/2012-06-08-InfiniteLoop.ll
@@ -0,0 +1,21 @@
+; RUN: opt < %s -reassociate -disable-output
+; PR13041
+
+define void @foo() {
+entry:
+  br label %while.cond
+
+while.cond:                                       ; preds = %while.body, %entry
+  %b.0 = phi i32 [ undef, %entry ], [ %sub2, %while.body ]
+  %c.0 = phi i32 [ undef, %entry ], [ %sub3, %while.body ]
+  br i1 undef, label %while.end, label %while.body
+
+while.body:                                       ; preds = %while.cond
+  %sub = sub nsw i32 0, %b.0
+  %sub2 = sub nsw i32 %sub, %c.0
+  %sub3 = sub nsw i32 0, %c.0
+  br label %while.cond
+
+while.end:                                        ; preds = %while.cond
+  ret void
+}