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-rw-r--r--test/Transforms/FunctionAttrs/2008-09-03-ReadNone.ll18
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Transforms/FunctionAttrs/2008-09-03-ReadNone.ll b/test/Transforms/FunctionAttrs/2008-09-03-ReadNone.ll
new file mode 100644
index 0000000000..a17d381eec
--- /dev/null
+++ b/test/Transforms/FunctionAttrs/2008-09-03-ReadNone.ll
@@ -0,0 +1,18 @@
+; RUN: llvm-as < %s | opt -functionattrs | llvm-dis | grep readnone | count 4
+@x = global i32 0
+
+declare i32 @e() readnone
+
+define i32 @f() {
+ %tmp = call i32 @e( ) ; <i32> [#uses=1]
+ ret i32 %tmp
+}
+
+define i32 @g() readonly {
+ ret i32 0
+}
+
+define i32 @h() readnone {
+ %tmp = load i32* @x ; <i32> [#uses=1]
+ ret i32 %tmp
+}