Try committing again. Add OptionalDefOperand. Remove clobbersPred.

llvm-svn: 38498
diff --git a/llvm/utils/TableGen/CodeGenInstruction.h b/llvm/utils/TableGen/CodeGenInstruction.h
index 54d9b3f..3f59c23 100644
--- a/llvm/utils/TableGen/CodeGenInstruction.h
+++ b/llvm/utils/TableGen/CodeGenInstruction.h
@@ -97,8 +97,8 @@
     bool hasVariableNumberOfOperands;
     bool hasCtrlDep;
     bool noResults;
-    bool clobbersPred;
     bool isNotDuplicable;
+    bool hasOptionalDef;
     
     /// ParseOperandName - Parse an operand name like "$foo" or "$foo.bar",
     /// where $foo is a whole operand and $foo.bar refers to a suboperand.