From b8ca4ff6439c1543a0c6729cbcd6c70c3be7dc3c Mon Sep 17 00:00:00 2001
From: Duncan Sands <baldrick@free.fr>
Date: Sat, 13 Sep 2008 12:45:50 +0000
Subject: Fix PR2792: treat volatile loads as writing memory somewhere. Treat
 stores as reading memory, just to play safe.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56188 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Analysis/GlobalsModRef/2008-09-13-VolatileRead.ll | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 test/Analysis/GlobalsModRef/2008-09-13-VolatileRead.ll

(limited to 'test/Analysis')

diff --git a/test/Analysis/GlobalsModRef/2008-09-13-VolatileRead.ll b/test/Analysis/GlobalsModRef/2008-09-13-VolatileRead.ll
new file mode 100644
index 0000000..8ac9637
--- /dev/null
+++ b/test/Analysis/GlobalsModRef/2008-09-13-VolatileRead.ll
@@ -0,0 +1,9 @@
+; RUN: llvm-as < %s | opt -globalsmodref-aa -markmodref | llvm-dis | not grep read
+; PR2792
+
+@g = global i32 0		; <i32*> [#uses=1]
+
+define i32 @f() {
+	%t = volatile load i32* @g		; <i32> [#uses=1]
+	ret i32 %t
+}
-- 
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