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/CodeGenInstruction.h b/utils/TableGen/CodeGenInstruction.h
index 351a880..6f7a19e 100644
--- a/utils/TableGen/CodeGenInstruction.h
+++ b/utils/TableGen/CodeGenInstruction.h
@@ -99,7 +99,7 @@
     bool isReMaterializable;
     bool hasDelaySlot;
     bool usesCustomDAGSchedInserter;
-    bool hasVariableNumberOfOperands;
+    bool isVariadic;
     bool hasCtrlDep;
     bool isNotDuplicable;
     bool hasOptionalDef;