From 3b04a7a1316807267c5bd2a28c40f6b898bd84ee Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 14 Mar 2004 22:16:52 +0000
Subject: [PATCH] New testcase that crashes the loop extractor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12399 91177308-0d34-0410-b5e6-96231b3b80d8
---
.../2004-03-14-NoSwitchSupport.ll | 27 +++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 test/Transforms/CodeExtractor/2004-03-14-NoSwitchSupport.ll
diff --git a/test/Transforms/CodeExtractor/2004-03-14-NoSwitchSupport.ll b/test/Transforms/CodeExtractor/2004-03-14-NoSwitchSupport.ll
new file mode 100644
index 00000000000..71445557f43
--- /dev/null
+++ b/test/Transforms/CodeExtractor/2004-03-14-NoSwitchSupport.ll
@@ -0,0 +1,27 @@
+; RUN: llvm-as < %s | opt -loop-extract-single -disable-output
+
+void %ab() {
+entry:
+ br label %codeReplTail
+
+then.1: ; preds = %codeReplTail
+ br label %loopentry.1
+
+loopentry.1: ; preds = %loopentry.1.preheader, %no_exit.1
+ br bool false, label %no_exit.1, label %loopexit.0.loopexit1
+
+no_exit.1: ; preds = %loopentry.1
+ br label %loopentry.1
+
+loopexit.0.loopexit: ; preds = %codeReplTail
+ ret void
+
+loopexit.0.loopexit1: ; preds = %loopentry.1
+ ret void
+
+codeReplTail: ; preds = %codeRepl, %codeReplTail
+ switch ushort 0, label %codeReplTail [
+ ushort 0, label %loopexit.0.loopexit
+ ushort 1, label %then.1
+ ]
+}