New testcase for PR532

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20492 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/LoopUnroll/2005-03-06-BadLoopInfoUpdate.ll b/test/Transforms/LoopUnroll/2005-03-06-BadLoopInfoUpdate.ll
new file mode 100644 (file)
index 0000000..b587259
--- /dev/null
+++ b/test/Transforms/LoopUnroll/2005-03-06-BadLoopInfoUpdate.ll
@@ -0,0 +1,29 @@
+; RUN: llvm-as < %s | opt -loop-unroll -loopsimplify -disable-output
+
+implementation   ; Functions:
+
+void %print_board() {
+entry:
+       br label %no_exit.1
+
+no_exit.1:             ; preds = %cond_false.2, %entry
+       br label %no_exit.2
+
+no_exit.2:             ; preds = %no_exit.2, %no_exit.1
+       %indvar1 = phi uint [ 0, %no_exit.1 ], [ %indvar.next2, %no_exit.2 ]            ; <uint> [#uses=1]
+       %indvar.next2 = add uint %indvar1, 1            ; <uint> [#uses=2]
+       %exitcond3 = setne uint %indvar.next2, 7                ; <bool> [#uses=1]
+       br bool %exitcond3, label %no_exit.2, label %loopexit.2
+
+loopexit.2:            ; preds = %no_exit.2
+       br bool false, label %cond_true.2, label %cond_false.2
+
+cond_true.2:           ; preds = %loopexit.2
+       ret void
+
+cond_false.2:          ; preds = %loopexit.2
+       br bool false, label %no_exit.1, label %loopexit.1
+
+loopexit.1:            ; preds = %cond_false.2
+       ret void
+}