SwiftCompilerSources: organize parameter pack instructions

(cherry picked from commit 6fcec2f)

Author: atrick

SwiftCompilerSources/Sources/SIL/Instruction.swift

@@ -529,9 +529,6 @@ final public class DeallocStackInst : Instruction, UnaryInstruction, Deallocatio
   }
 }
 
-final public class DeallocPackInst : Instruction, UnaryInstruction, Deallocation {}
-final public class DeallocPackMetadataInst : Instruction, Deallocation {}
-
 final public class DeallocStackRefInst : Instruction, UnaryInstruction, Deallocation {
   public var allocRef: AllocRefInstBase { operand.value as! AllocRefInstBase }
 }
@@ -703,12 +700,6 @@ class ValueMetatypeInst : SingleValueInstruction, UnaryInstruction {}
 final public
 class ExistentialMetatypeInst : SingleValueInstruction, UnaryInstruction {}
 
-final public class OpenPackElementInst : SingleValueInstruction {}
-final public class PackLengthInst : SingleValueInstruction {}
-final public class DynamicPackIndexInst : SingleValueInstruction {}
-final public class PackPackIndexInst : SingleValueInstruction {}
-final public class ScalarPackIndexInst : SingleValueInstruction {}
-
 final public class ObjCProtocolInst : SingleValueInstruction {}
 
 public class GlobalAccessInstruction : SingleValueInstruction {
@@ -1095,20 +1086,6 @@ final public class ObjectInst : SingleValueInstruction {
 final public class VectorInst : SingleValueInstruction {
 }
 
-final public class TuplePackExtractInst: SingleValueInstruction {
-  public var indexOperand: Operand { operands[0] }
-  public var tupleOperand: Operand { operands[1] }
-}
-
-final public class TuplePackElementAddrInst: SingleValueInstruction {
-  public var indexOperand: Operand { operands[0] }
-  public var tupleOperand: Operand { operands[1] }
-}
-
-final public class PackElementGetInst: SingleValueInstruction {}
-
-final public class PackElementSetInst: Instruction {}
-
 final public class DifferentiableFunctionInst: SingleValueInstruction {}
 
 final public class LinearFunctionInst: SingleValueInstruction {}
@@ -1142,9 +1119,6 @@ final public class AllocVectorInst : SingleValueInstruction, Allocation, UnaryIn
   public var capacity: Value { operand.value }
 }
 
-final public class AllocPackInst : SingleValueInstruction, Allocation {}
-final public class AllocPackMetadataInst : SingleValueInstruction, Allocation {}
-
 public class AllocRefInstBase : SingleValueInstruction, Allocation {
   final public var isObjC: Bool { bridged.AllocRefInstBase_isObjc() }
 
@@ -1363,6 +1337,36 @@ final public class DestructureTupleInst : MultipleValueInstruction, UnaryInstruc
   public var `tuple`: Value { operand.value }
 }
 
+//===----------------------------------------------------------------------===//
+//                           parameter pack instructions
+//===----------------------------------------------------------------------===//
+
+final public class AllocPackInst : SingleValueInstruction, Allocation {}
+final public class AllocPackMetadataInst : SingleValueInstruction, Allocation {}
+
+final public class DeallocPackInst : Instruction, UnaryInstruction, Deallocation {}
+final public class DeallocPackMetadataInst : Instruction, Deallocation {}
+
+final public class OpenPackElementInst : SingleValueInstruction {}
+final public class PackLengthInst : SingleValueInstruction {}
+final public class DynamicPackIndexInst : SingleValueInstruction {}
+final public class PackPackIndexInst : SingleValueInstruction {}
+final public class ScalarPackIndexInst : SingleValueInstruction {}
+
+final public class TuplePackExtractInst: SingleValueInstruction {
+  public var indexOperand: Operand { operands[0] }
+  public var tupleOperand: Operand { operands[1] }
+}
+
+final public class TuplePackElementAddrInst: SingleValueInstruction {
+  public var indexOperand: Operand { operands[0] }
+  public var tupleOperand: Operand { operands[1] }
+}
+
+final public class PackElementGetInst: SingleValueInstruction {}
+
+final public class PackElementSetInst: Instruction {}
+
 //===----------------------------------------------------------------------===//
 //                            terminator instructions
 //===----------------------------------------------------------------------===//