diff --git a/test/CodeGen/X86/tlv-3.ll b/test/CodeGen/X86/tlv-3.ll
new file mode 100644
index 00000000000..4f793051836
--- /dev/null
+++ b/test/CodeGen/X86/tlv-3.ll
@@ -0,0 +1,10 @@
+; RUN: llc < %s -mtriple x86_64-apple-darwin | FileCheck %s
+; PR17964
+
+; CHECK: __DATA,__thread_data,thread_local_regular
+; CHECK: _foo$tlv$init
+@foo = weak_odr thread_local global i8 1, align 4
+
+define i32 @main() {
+    ret i32 0
+}