Add predicates methods to TargetOperandInfo, and switch all clients 
over to using them, instead of diddling Flags directly.  Change the
various flags from const variables to enums.

llvm-svn: 45677
diff --git a/llvm/lib/CodeGen/TargetInstrInfoImpl.cpp b/llvm/lib/CodeGen/TargetInstrInfoImpl.cpp
index 207f371..4498c98 100644
--- a/llvm/lib/CodeGen/TargetInstrInfoImpl.cpp
+++ b/llvm/lib/CodeGen/TargetInstrInfoImpl.cpp
@@ -38,7 +38,7 @@
   const TargetInstrDescriptor *TID = MI->getDesc();
   if (TID->isPredicable()) {
     for (unsigned j = 0, i = 0, e = MI->getNumOperands(); i != e; ++i) {
-      if ((TID->OpInfo[i].Flags & M_PREDICATE_OPERAND)) {
+      if (TID->OpInfo[i].isPredicate()) {
         MachineOperand &MO = MI->getOperand(i);
         if (MO.isReg()) {
           MO.setReg(Pred[j].getReg());