New testcase. Believe it or not, this happens a LOT in vortex

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17745 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/GlobalOpt/load-store-global.llx b/test/Transforms/GlobalOpt/load-store-global.llx
new file mode 100644 (file)
index 0000000..2d79dd1
--- /dev/null
+++ b/test/Transforms/GlobalOpt/load-store-global.llx
@@ -0,0 +1,14 @@
+; RUN: llvm-as < %s | opt -globalopt | llvm-dis | not grep G
+
+%G = internal global int 17
+
+void %foo() {
+       %V = load int* %G
+        store int %V, int* %G   ;; Doesn't change the value
+        ret void
+}
+int %bar() {
+        %X = load int* %G
+        ret int %X
+}
+