Let a target specify whether it wants an assembly printer to be the MC version
or not. TableGen needs to generate the printInstruction() function as taking
an MCInstr* or a MachineInstr*, depending. Default to the old non-MC
version so that everything not yet using MC continues to just work without
fidding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115126 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/AsmWriterEmitter.cpp b/utils/TableGen/AsmWriterEmitter.cpp
index 6ae0b39..1bca660 100644
--- a/utils/TableGen/AsmWriterEmitter.cpp
+++ b/utils/TableGen/AsmWriterEmitter.cpp
@@ -243,12 +243,15 @@
   CodeGenTarget Target;
   Record *AsmWriter = Target.getAsmWriter();
   std::string ClassName = AsmWriter->getValueAsString("AsmWriterClassName");
+  bool isMC = AsmWriter->getValueAsBit("isMCAsmWriter");
+  const char *MachineInstrClassName = isMC ? "MCInst" : "MachineInstr";
 
   O <<
   "/// printInstruction - This method is automatically generated by tablegen\n"
   "/// from the instruction set description.\n"
     "void " << Target.getName() << ClassName
-            << "::printInstruction(const MachineInstr *MI, raw_ostream &O) {\n";
+            << "::printInstruction(const " << MachineInstrClassName
+            << " *MI, raw_ostream &O) {\n";
 
   std::vector<AsmWriterInst> Instructions;