ARM TLS: implement "general dynamic", "initial exec" and "local exec" models.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36506 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.h b/lib/Target/ARM/ARMISelLowering.h
index 5b182f9..8e9ef88 100644
--- a/lib/Target/ARM/ARMISelLowering.h
+++ b/lib/Target/ARM/ARMISelLowering.h
@@ -63,7 +63,9 @@
       RRX,          // V = RRX X, Flag     -> srl X, 1 + shift in carry flag.
       
       FMRRD,        // double to two gprs.
-      FMDRR         // Two gprs to double.
+      FMDRR,         // Two gprs to double.
+
+      THREAD_POINTER
     };
   }
 
@@ -125,6 +127,11 @@
     SDOperand LowerCALL(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerGlobalAddressDarwin(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerGlobalAddressELF(SDOperand Op, SelectionDAG &DAG);
+    SDOperand LowerGlobalTLSAddress(SDOperand Op, SelectionDAG &DAG);
+    SDOperand LowerToTLSGeneralDynamicModel(GlobalAddressSDNode *GA,
+                                            SelectionDAG &DAG);
+    SDOperand LowerToTLSExecModels(GlobalAddressSDNode *GA,
+                                       SelectionDAG &DAG);
     SDOperand LowerGLOBAL_OFFSET_TABLE(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerFORMAL_ARGUMENTS(SDOperand Op, SelectionDAG &DAG);
     SDOperand LowerBR_JT(SDOperand Op, SelectionDAG &DAG);