Support constructor and destructor attributes in CodeGen

 - There is an miscompilation issue remaining due to a poor
   interaction between the delayed emission of static functions and
   the emission of constructors, but that already existed prior to
   this change.

llvm-svn: 54258

1 files changed, 20 insertions, 0 deletions

diff --git a/clang/test/CodeGen/constructor-attribute.c b/clang/test/CodeGen/constructor-attribute.c
new file mode 100644
index 00000000000..0ecc47babfe
--- /dev/null
+++ b/clang/test/CodeGen/constructor-attribute.c
@@ -0,0 +1,20 @@
+// RUN: clang -emit-llvm -o %t %s &&
+// RUN: grep -e "global_ctors.*@A" %t &&
+// RUN: grep -e "global_dtors.*@B" %t
+
+#include <stdio.h>
+
+void A() __attribute__((constructor));
+void B() __attribute__((destructor));
+
+void A() {
+  printf("A\n");
+}
+
+void B() {
+  printf("B\n");
+}
+
+int main() {
+  return 0;
+}