diff --git a/test/CodeGen/X86/2007-03-18-LiveIntervalAssert.ll b/test/CodeGen/X86/2007-03-18-LiveIntervalAssert.ll
new file mode 100644
index 00000000000..6965849e323
--- /dev/null
+++ b/test/CodeGen/X86/2007-03-18-LiveIntervalAssert.ll
@@ -0,0 +1,7 @@
+; RUN: llvm-as < %s | llc -march=x86
+; PR1259
+
+define void @test() {
+        %tmp2 = call i32 asm "...", "=r,~{dirflag},~{fpsr},~{flags},~{dx},~{cx},~{ax}"( )
+        unreachable
+}