new testcase that crashes simplifycfg

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26274 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/SimplifyCFG/2006-02-17-InfiniteUnroll.ll b/test/Transforms/SimplifyCFG/2006-02-17-InfiniteUnroll.ll
new file mode 100644 (file)
index 0000000..16af017
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/2006-02-17-InfiniteUnroll.ll
@@ -0,0 +1,35 @@
+; RUN: llvm-as < %s | opt -simplifycfg -disable-output
+
+void %polnel_() {
+entry:
+       %tmp595 = setlt int 0, 0                ; <bool> [#uses=4]
+       br bool %tmp595, label %bb148.critedge, label %cond_true40
+
+bb36:          ; preds = %bb43
+       br bool %tmp595, label %bb43, label %cond_true40
+
+cond_true40:           ; preds = %bb46, %cond_true40, %bb36, %entry
+       %tmp397 = setgt int 0, 0                ; <bool> [#uses=1]
+       br bool %tmp397, label %bb43, label %cond_true40
+
+bb43:          ; preds = %cond_true40, %bb36
+       br bool false, label %bb53, label %bb36
+
+bb46:          ; preds = %bb53
+       br bool %tmp595, label %bb53, label %cond_true40
+
+bb53:          ; preds = %bb46, %bb43
+       br bool false, label %bb102, label %bb46
+
+bb92.preheader:                ; preds = %bb102
+       ret void
+
+bb102:         ; preds = %bb53
+       br bool %tmp595, label %bb148, label %bb92.preheader
+
+bb148.critedge:                ; preds = %entry
+       ret void
+
+bb148:         ; preds = %bb102
+       ret void
+}