Use newly added API in MRegisterInfo.

llvm-svn: 16060
diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.h b/llvm/lib/CodeGen/LiveIntervalAnalysis.h
index 37b6457..73d730a 100644
--- a/llvm/lib/CodeGen/LiveIntervalAnalysis.h
+++ b/llvm/lib/CodeGen/LiveIntervalAnalysis.h
@@ -47,6 +47,8 @@
     typedef std::map<unsigned, unsigned> Reg2RegMap;
     Reg2RegMap r2rMap_;
 
+    std::vector<bool> allocatableRegs_;
+
   public:
     struct InstrSlots
     {