Subzero: Prototype to make use of RegNumT::No Register more concise

src/IceOperand.h

Index: src/IceOperand.h
diff --git a/src/IceOperand.h b/src/IceOperand.h
index a20308660ced41885cc20c2d8cdf756a5ee4ffe3..d3306736e9a65d3dd206219d979310c06ebd211c 100644
--- a/src/IceOperand.h
+++ b/src/IceOperand.h
@@ -443,6 +443,8 @@ public:
   enum { NoRegisterValue = std::numeric_limits<BaseType>::max() };
   const static RegNumT NoRegister /* = NoRegisterValue */;
 
+  bool hasValue() const {return Value == NoRegisterValue;}

[Jim Stichnoth, 2016/02/12 03:16:51]

You really need "return Value != NoRegisterValue;" to convey the meaning of
hasValue(), which is the opposite of your original noRegister() proposal.

+
 private:
   BaseType Value = NoRegisterValue;
   static BaseType Limit;