Move MRI into RegAllocBase. Clean up debug output a bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121599 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocBase.h b/lib/CodeGen/RegAllocBase.h
index 71c3faf..7d13327 100644
--- a/lib/CodeGen/RegAllocBase.h
+++ b/lib/CodeGen/RegAllocBase.h
@@ -84,6 +84,7 @@
   };
 
   const TargetRegisterInfo *TRI;
+  MachineRegisterInfo *MRI;
   VirtRegMap *VRM;
   LiveIntervals *LIS;
   LiveUnionArray PhysReg2LiveUnion;
@@ -92,12 +93,12 @@
   // query on a new live virtual register.
   OwningArrayPtr<LiveIntervalUnion::Query> Queries;
 
-  RegAllocBase(): TRI(0), VRM(0), LIS(0) {}
+  RegAllocBase(): TRI(0), MRI(0), VRM(0), LIS(0) {}
 
   virtual ~RegAllocBase() {}
 
   // A RegAlloc pass should call this before allocatePhysRegs.
-  void init(const TargetRegisterInfo &tri, VirtRegMap &vrm, LiveIntervals &lis);
+  void init(VirtRegMap &vrm, LiveIntervals &lis);
 
   // Get an initialized query to check interferences between lvr and preg.  Note
   // that Query::init must be called at least once for each physical register