rename hasVariableOperands() -> isVariadic().  Add some comments.
Evan, please review the comments I added to getNumDefs to make sure
that they are accurate, thx.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45687 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/DAGISelEmitter.cpp b/utils/TableGen/DAGISelEmitter.cpp
index bd8d210..8502d61 100644
--- a/utils/TableGen/DAGISelEmitter.cpp
+++ b/utils/TableGen/DAGISelEmitter.cpp
@@ -835,7 +835,7 @@
       if (InstPatNode && InstPatNode->getOperator()->getName() == "set") {
         InstPatNode = InstPatNode->getChild(InstPatNode->getNumChildren()-1);
       }
-      bool HasVarOps     = isRoot && II.hasVariableNumberOfOperands;
+      bool HasVarOps     = isRoot && II.isVariadic;
       // FIXME: fix how we deal with physical register operands.
       bool HasImpInputs  = isRoot && Inst.getNumImpOperands() > 0;
       bool HasImpResults = isRoot && DstRegs.size() > 0;