Place context in member variables instead of passing around pointers.

Use the opportunity to get rid of the trailing underscore variable names.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127618 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/ProcessImplicitDefs.h

@@ -18,14 +18,20 @@ namespace llvm {
 
   class MachineInstr;
   class TargetInstrInfo;
+  class TargetRegisterInfo;
+  class MachineRegisterInfo;
+  class LiveVariables;
 
   /// Process IMPLICIT_DEF instructions and make sure there is one implicit_def
   /// for each use. Add isUndef marker to implicit_def defs and their uses.
   class ProcessImplicitDefs : public MachineFunctionPass {
-  private:
+    const TargetInstrInfo *TII;
+    const TargetRegisterInfo *TRI;
+    MachineRegisterInfo *MRI;
+    LiveVariables *LV;
 
     bool CanTurnIntoImplicitDef(MachineInstr *MI, unsigned Reg,
-                                unsigned OpIdx, const TargetInstrInfo *tii_,
+                                unsigned OpIdx,
                                 SmallSet<unsigned, 8> &ImpDefRegs);
 
   public: