[AVX] Constify Inits

Make references to Inits const everywhere.  This is the final step
before making them unique.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136485 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/CodeEmitterGen.h b/utils/TableGen/CodeEmitterGen.h
index a874d97..1f841c3 100644
--- a/utils/TableGen/CodeEmitterGen.h
+++ b/utils/TableGen/CodeEmitterGen.h
@@ -35,10 +35,10 @@
   void emitMachineOpEmitter(raw_ostream &o, const std::string &Namespace);
   void emitGetValueBit(raw_ostream &o, const std::string &Namespace);
   void reverseBits(std::vector<Record*> &Insts);
-  int getVariableBit(const std::string &VarName, BitsInit *BI, int bit);
+  int getVariableBit(const std::string &VarName, const BitsInit *BI, int bit);
   std::string getInstructionCase(Record *R, CodeGenTarget &Target);
   void
-  AddCodeToMergeInOperand(Record *R, BitsInit *BI, const std::string &VarName,
+  AddCodeToMergeInOperand(Record *R, const BitsInit *BI, const std::string &VarName,
                           unsigned &NumberedOp,
                           std::string &Case, CodeGenTarget &Target);