Merge pull request swiftlang#12557 from dcci/unused

Author: swift-ci

lib/ParseSIL/ParseSIL.cpp

@@ -3422,7 +3422,6 @@ bool SILParser::parseSILInstruction(SILBuilder &B) {
     bool OnStack = false;
     SmallVector<SILType, 2> ElementTypes;
     SmallVector<SILValue, 2> ElementCounts;
-    StringRef Optional;
     while (P.consumeIf(tok::l_square)) {
       Identifier Id;
       parseSILIdentifier(Id, diag::expected_in_attribute_list);

lib/Serialization/DeserializeSIL.cpp

@@ -731,7 +731,6 @@ bool SILDeserializer::readSILInstruction(SILFunction *Fn, SILBasicBlock *BB,
   ValueID ValID, ValID2, ValID3;
   TypeID TyID, TyID2, TyID3;
   TypeID ConcreteTyID;
-  ModuleID OwningModuleID;
   SourceLoc SLoc;
   ArrayRef<uint64_t> ListOfValues;
   SILLocation Loc = RegularLocation(SLoc);