From: Duncan Sands <baldrick@free.fr>
Date: Fri, 19 Sep 2008 09:20:05 +0000 (+0000)
Subject: Add test for improvement of readonly to readnone,
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=a01febbcc0c93796b2fd8562de0f53586e908ec8;p=oota-llvm.git

Add test for improvement of readonly to readnone,
and non-demotion of readnone to readonly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56344 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Transforms/AddReadAttrs/2008-09-03-ReadNone.ll b/test/Transforms/AddReadAttrs/2008-09-03-ReadNone.ll
index 32719020040..3c7b32d9d49 100644
--- a/test/Transforms/AddReadAttrs/2008-09-03-ReadNone.ll
+++ b/test/Transforms/AddReadAttrs/2008-09-03-ReadNone.ll
@@ -1,9 +1,18 @@
-; RUN: llvm-as < %s | opt -addreadattrs | llvm-dis | grep readnone | count 2
+; RUN: llvm-as < %s | opt -addreadattrs | llvm-dis | grep readnone | count 4
+@x = global i32 0
+
+declare i32 @e() readnone
 
 define i32 @f() {
-entry:
 	%tmp = call i32 @e( )		; <i32> [#uses=1]
 	ret i32 %tmp
 }
 
-declare i32 @e() readnone
+define i32 @g() readonly {
+	ret i32 0
+}
+
+define i32 @h() readnone {
+	%tmp = load i32* @x		; <i32> [#uses=1]
+	ret i32 %tmp
+}