From: Chris Lattner <sabre@nondot.org>
Date: Sun, 8 May 2005 23:57:34 +0000 (+0000)
Subject: New testacse for information exposed by the 'tail' call marker.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=20fad44ede55d9996a7d8a8f9012b763d7b7c601;p=oota-llvm.git

New testacse for information exposed by the 'tail' call marker.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21795 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Analysis/BasicAA/tailcall-modref.ll b/test/Analysis/BasicAA/tailcall-modref.ll
new file mode 100644
index 00000000000..c58ad7ffcd4
--- /dev/null
+++ b/test/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
+}
+
+