From 7d83efbc0b460e8aad7e85ccc02ea8afacfb3902 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 6 Oct 2004 03:26:38 +0000
Subject: [PATCH] When tail duplicating these functions, the add instruction
 should not be duplicated, even though the block it is in is duplicated.

llvm-svn: 16757
---
 .../Transforms/TailDup/MergeTest.ll           | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 llvm/test/Regression/Transforms/TailDup/MergeTest.ll

diff --git a/llvm/test/Regression/Transforms/TailDup/MergeTest.ll b/llvm/test/Regression/Transforms/TailDup/MergeTest.ll
new file mode 100644
index 000000000000..ef6fe0729ee0
--- /dev/null
+++ b/llvm/test/Regression/Transforms/TailDup/MergeTest.ll
@@ -0,0 +1,31 @@
+; RUN: llvm-as < %s | opt -tailduplicate  | llvm-dis | grep add | not grep uses=1
+
+int %test1(bool %C, int %A, int* %P) {
+entry:
+        br bool %C, label %L1, label %L2
+
+L1:
+	store int 1, int* %P
+        br label %L2
+
+L2:
+	%X = add int %A, 17
+	ret int %X
+}
+
+int %test2(bool %C, int %A, int* %P) {
+entry:
+        br bool %C, label %L1, label %L2
+
+L1:
+	store int 1, int* %P
+        br label %L3
+
+L2:
+	store int 7, int* %P
+	br label %L3
+L3:
+	%X = add int %A, 17
+	ret int %X
+}
+