Reverting r56249. On further investigation, this functionality isn't needed.

Apologies for the thrashing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56251 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGEmit.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGEmit.cpp
index 52428cb..156905a 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGEmit.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGEmit.cpp
@@ -288,7 +288,7 @@
     else
       Idx = ConstPool->getConstantPoolIndex(CP->getConstVal(), Align);
     MI->addOperand(MachineOperand::CreateCPI(Idx, Offset));
-  } else if (SymbolSDNode *ES = dyn_cast<SymbolSDNode>(Op)) {
+  } else if (ExternalSymbolSDNode *ES = dyn_cast<ExternalSymbolSDNode>(Op)) {
     MI->addOperand(MachineOperand::CreateES(ES->getSymbol()));
   } else {
     assert(Op.getValueType() != MVT::Other &&
@@ -571,7 +571,8 @@
     MachineInstr *MI = BuildMI(*MF, TII->get(TargetInstrInfo::INLINEASM));
 
     // Add the asm string as an external symbol operand.
-    const char *AsmStr = cast<SymbolSDNode>(Node->getOperand(1))->getSymbol();
+    const char *AsmStr =
+      cast<ExternalSymbolSDNode>(Node->getOperand(1))->getSymbol();
     MI->addOperand(MachineOperand::CreateES(AsmStr));
       
     // Add all of the operand registers to the instruction.