Refactor code to add initial support for OptionalDefOperand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37933 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/DAGISelEmitter.h b/utils/TableGen/DAGISelEmitter.h
index a832b7d..7511c4e 100644
--- a/utils/TableGen/DAGISelEmitter.h
+++ b/utils/TableGen/DAGISelEmitter.h
@@ -343,10 +343,10 @@
     TreePatternNode *ParseTreePattern(DagInit *DI);
   };
 
-  /// DAGPredicateOperand - One of these is created for each PredicateOperand
-  /// that has a set ExecuteAlways field.
-  struct DAGPredicateOperand {
-    std::vector<TreePatternNode*> AlwaysOps;
+  /// DAGDefaultOperand - One of these is created for each PredicateOperand
+  /// or OptionalDefOperand that has a set ExecuteAlways / DefaultOps field.
+  struct DAGDefaultOperand {
+    std::vector<TreePatternNode*> DefaultOps;
   };
 
   class DAGInstruction {
@@ -430,7 +430,7 @@
   std::map<Record*, std::pair<Record*, std::string> > SDNodeXForms;
   std::map<Record*, ComplexPattern> ComplexPatterns;
   std::map<Record*, TreePattern*> PatternFragments;
-  std::map<Record*, DAGPredicateOperand> PredicateOperands;
+  std::map<Record*, DAGDefaultOperand> DefaultOperands;
   std::map<Record*, DAGInstruction> Instructions;
   
   // Specific SDNode definitions:
@@ -485,9 +485,9 @@
     abort();
   }
   
-  const DAGPredicateOperand &getPredicateOperand(Record *R) {
-    assert(PredicateOperands.count(R) &&"Isn't an analyzed predicate operand!");
-    return PredicateOperands.find(R)->second;
+  const DAGDefaultOperand &getDefaultOperand(Record *R) {
+    assert(DefaultOperands.count(R) &&"Isn't an analyzed default operand!");
+    return DefaultOperands.find(R)->second;
   }
   
   TreePattern *getPatternFragment(Record *R) const {
@@ -516,7 +516,7 @@
   void ParseNodeTransforms(std::ostream &OS);
   void ParseComplexPatterns();
   void ParsePatternFragments(std::ostream &OS);
-  void ParsePredicateOperands();
+  void ParseDefaultOperands();
   void ParseInstructions();
   void ParsePatterns();
   void GenerateVariants();