Add test for improvement of readonly to readnone,
and non-demotion of readnone to readonly.
llvm-svn: 56344
diff --git a/llvm/test/Transforms/AddReadAttrs/2008-09-03-ReadNone.ll b/llvm/test/Transforms/AddReadAttrs/2008-09-03-ReadNone.ll
index 3271902..3c7b32d 100644
--- a/llvm/test/Transforms/AddReadAttrs/2008-09-03-ReadNone.ll
+++ b/llvm/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
+}