Let callers decide the sub-register index on the def operand of rematerialized instru...

[oota-llvm.git] / include / llvm / Constant.h

diff --git a/include/llvm/Constant.h b/include/llvm/Constant.h
index bccd417f07905cfb1f8333f41a4f62eb522511d2..3dc5881bdf4bf4f37fc9c4a8f0afc34448e0278f 100644 (file)
--- a/include/llvm/Constant.h
+++ b/include/llvm/Constant.h
@@ -64,6 +64,10 @@ public:
   /// getNullValue.
   virtual bool isNullValue() const = 0;
 
+  /// isNegativeZeroValue - Return true if the value is what would be returned 
+  /// by getZeroValueForNegation.
+  virtual bool isNegativeZeroValue() const { return isNullValue(); }
+
   /// canTrap - Return true if evaluation of this constant could trap.  This is
   /// true for things like constant expressions that could divide by zero.
   bool canTrap() const;