Index: lib/Target/X86/X86ISelLowering.cpp
===================================================================
--- lib/Target/X86/X86ISelLowering.cpp  (revision 261121)
+++ lib/Target/X86/X86ISelLowering.cpp  (working copy)
@@ -23034,6 +23034,8 @@
   case X86::TCRETURNri64:
   case X86::TCRETURNmi64:
     return BB;
+  case X86::TLSADDR:
+    llvm_unreachable("foo");
   case X86::WIN_ALLOCA:
     return EmitLoweredWinAlloca(MI, BB);
   case X86::CATCHRET:
Index: lib/Target/X86/X86InstrCompiler.td
===================================================================
--- lib/Target/X86/X86InstrCompiler.td  (revision 261121)
+++ lib/Target/X86/X86InstrCompiler.td  (working copy)
@@ -112,6 +112,10 @@
                      "# dynamic stack allocation",
                      [(X86WinAlloca)]>;

+let isPseudo = 1 in
+  def TLSADDR : I<0, Pseudo, (outs), (ins i64mem:$sym),
+                  "# tls things", []>;
+
 // When using segmented stacks these are lowered into instructions which first
 // check if the current stacklet has enough free memory. If it does, memory is
 // allocated by bumping the stack pointer. Otherwise memory is allocated from