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/Target/ARM/ARMCodeEmitter.cpp b/lib/Target/ARM/ARMCodeEmitter.cpp
index f7e5e4e..e3b1dda 100644
--- a/lib/Target/ARM/ARMCodeEmitter.cpp
+++ b/lib/Target/ARM/ARMCodeEmitter.cpp
@@ -564,9 +564,11 @@
     break;
   }
   case TargetOpcode::DBG_LABEL:
-  case TargetOpcode::EH_LABEL:
     MCE.emitLabel(MMI->getLabelSym(MI.getOperand(0).getImm()));
     break;
+  case TargetOpcode::EH_LABEL:
+    MCE.emitLabel(MI.getOperand(0).getMCSymbol());
+    break;
   case TargetOpcode::IMPLICIT_DEF:
   case TargetOpcode::KILL:
     // Do nothing.