Add test for r127138.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127172 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/Internalize/available_externally.ll

@@ -0,0 +1,16 @@
+; RUN: opt < %s -internalize -internalize-public-api-list foo -S | FileCheck %s
+
+; CHECK: define void @foo
+define void @foo() {
+  ret void
+}
+
+; CHECK: define internal void @zed
+define void @zed() {
+  ret void
+}
+
+; CHECK: define available_externally void @bar
+define available_externally void @bar() {
+  ret void
+}