From d1969cf8c2ebfd32b40c5cee5ef2b760f8448ea8 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 8 May 2005 23:57:34 +0000
Subject: [PATCH] New testacse for information exposed by the 'tail' call
 marker.

llvm-svn: 21795
---
 .../Analysis/BasicAA/tailcall-modref.ll          | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 test/Regression/Analysis/BasicAA/tailcall-modref.ll

diff --git a/test/Regression/Analysis/BasicAA/tailcall-modref.ll b/test/Regression/Analysis/BasicAA/tailcall-modref.ll
new file mode 100644
index 00000000000..c58ad7ffcd4
--- /dev/null
+++ b/test/Regression/Analysis/BasicAA/tailcall-modref.ll
@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | opt -basicaa -load-vn -gcse -instcombine | llvm-dis | grep 'ret int 0'
+declare void %foo(int*)
+declare void %bar()
+
+int %test() {
+	%A = alloca int
+	call void %foo(int* %A)
+
+	%X = load int* %A
+	tail call void %bar()   ;; Cannot modify *%A because it's on the stack.
+	%Y = load int* %A
+	%Z = sub int %X, %Y
+	ret int %Z
+}
+
+