Reinstate the optimization suppressing available_externally functions

at -O0. The only change from the previous patch is that we don't try
to generate virtual method thunks for an available_externally
function.

llvm-svn: 108230

1 files changed, 12 insertions, 0 deletions

diff --git a/clang/test/CodeGen/available-externally-suppress.c b/clang/test/CodeGen/available-externally-suppress.c
new file mode 100644
index 00000000000..c3b7a213baf
--- /dev/null
+++ b/clang/test/CodeGen/available-externally-suppress.c
@@ -0,0 +1,12 @@
+// RUN: %clang_cc1 -emit-llvm -o - -O0 -triple x86_64-apple-darwin10 %s | FileCheck %s
+
+// Ensure that we don't emit available_externally functions at -O0.
+int x;
+
+inline void f0(int y) { x = y; }
+
+// CHECK: define void @test()
+// CHECK: declare void @f0(i32)
+void test() {
+  f0(17);
+}