Index: test/CodeGen/dwarf4-discriminators.c
===================================================================
--- /dev/null
+++ test/CodeGen/dwarf4-discriminators.c
@@ -0,0 +1,10 @@
+// Test that disciminators are only added for DWARF 4 and later.
+
+// RUN: %clang -target x86_64-linux-gnu -g -S -o - %s | FileCheck %s --check-prefix=LINUX
+// RUN: %clang -target x86_64-apple-darwin -g -S -o - %s | FileCheck %s --check-prefix=DARWIN
+int foo(long i) {
+  if (i < 5) return 2; else return 90;
+}
+// LINUX:  .loc    1 {{[0-9]+}} 0 discriminator 1   #
+// LINUX:  .loc    1 {{[0-9]+}} 0 discriminator 2   #
+// DARWIN: .loc    1 {{[0-9]+}} 0 prologue_end      #