change the LabelSDNode to be EHLabelSDNode and make it hold
an MCSymbol.  Make the EH_LABEL MachineInstr hold its label
with an MCSymbol instead of ID.  Fix a bug in MMI.cpp which
would return labels named "Label4" instead of "label4".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98463 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
index 2237043..49105a8 100644
--- a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+++ b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
@@ -705,6 +705,13 @@
     EmitCopyFromReg(Node, 0, IsClone, IsCloned, SrcReg, VRBaseMap);
     break;
   }
+  case ISD::EH_LABEL: {
+    MCSymbol *S = cast<EHLabelSDNode>(Node)->getLabel();
+    BuildMI(*MBB, InsertPos, Node->getDebugLoc(),
+            TII->get(TargetOpcode::EH_LABEL)).addSym(S);
+    break;
+  }
+      
   case ISD::INLINEASM: {
     unsigned NumOps = Node->getNumOperands();
     if (Node->getOperand(NumOps-1).getValueType() == MVT::Flag)