Add CopyCost to TargetRegisterClass. This specifies the cost of copying a value

between two registers in the specific class.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42123 91177308-0d34-0410-b5e6-96231b3b80d8

utils/TableGen/CodeGenRegisters.h

@@ -38,6 +38,7 @@ namespace llvm {
     std::vector<MVT::ValueType> VTs;
     unsigned SpillSize;
     unsigned SpillAlignment;
+    int CopyCost;
     std::vector<Record*> SubRegClasses;
     std::string MethodProtos, MethodBodies;