[Gardening] Fix up order-dependent batch code complete tests

swift-ide-test -batch-code-completion has no particular order for the
output completion list. Update the order dependent tests to use DAG
instead.

Author: bnbarham

test/IDE/complete_expr_postfix_begin.swift

@@ -332,19 +332,23 @@ func foo() -> Undeclared {
   var fooParam = FooStruct()
   #^IN_INVALID_8?check=COMMON^#
 }
-// MY_ALIAS_1: Decl[TypeAlias]/Local:                        MyAlias[#(T, T)#];
-// MY_ALIAS_1: Decl[LocalVar]/Local/TypeRelation[Identical]: x[#MyAlias<Int>#]; name=x
-// MY_ALIAS_1: Decl[LocalVar]/Local/TypeRelation[Identical]: y[#(Int, Int)#]; name=y
+// MY_ALIAS_1: Begin completions
+// MY_ALIAS_1-DAG: Decl[TypeAlias]/Local:                        MyAlias[#(T, T)#];
+// MY_ALIAS_1-DAG: Decl[LocalVar]/Local/TypeRelation[Identical]: x[#MyAlias<Int>#]; name=x
+// MY_ALIAS_1-DAG: Decl[LocalVar]/Local/TypeRelation[Identical]: y[#(Int, Int)#]; name=y
+// MY_ALIAS_1: End completions
 
 func testGenericTypealias1() {
   typealias MyAlias<T> = (T, T)
   let x: MyAlias<Int> = (1, 2)
   var y: (Int, Int)
   y = #^GENERIC_TYPEALIAS_1?check=MY_ALIAS_1^#
 }
-// MY_ALIAS_2: Decl[TypeAlias]/Local:                        MyAlias[#(T, T)#];
-// MY_ALIAS_2: Decl[LocalVar]/Local/TypeRelation[Identical]: x[#(Int, Int)#]; name=x
-// MY_ALIAS_2: Decl[LocalVar]/Local/TypeRelation[Identical]: y[#MyAlias<Int>#]; name=y
+// MY_ALIAS_2: Begin completions
+// MY_ALIAS_2-DAG: Decl[TypeAlias]/Local:                        MyAlias[#(T, T)#];
+// MY_ALIAS_2-DAG: Decl[LocalVar]/Local/TypeRelation[Identical]: x[#(Int, Int)#]; name=x
+// MY_ALIAS_2-DAG: Decl[LocalVar]/Local/TypeRelation[Identical]: y[#MyAlias<Int>#]; name=y
+// MY_ALIAS_2: End completions
 func testGenericTypealias2() {
   typealias MyAlias<T> = (T, T)
   let x: (Int, Int) = (1, 2)
@@ -468,13 +472,13 @@ func testTuple(localInt: Int) {
   let _: (Int, String) = (#^IN_TUPLE_2^#, "foo")
 }
 // IN_TUPLE_1: Begin completions
-// IN_TUPLE_1: Decl[LocalVar]/Local/TypeRelation[Identical]: localStr[#String#]; name=localStr
-// IN_TUPLE_1: Decl[LocalVar]/Local:               localInt[#Int#]; name=localInt
+// IN_TUPLE_1-DAG: Decl[LocalVar]/Local/TypeRelation[Identical]: localStr[#String#]; name=localStr
+// IN_TUPLE_1-DAG: Decl[LocalVar]/Local:               localInt[#Int#]; name=localInt
 // IN_TUPLE_1: End completions
 
 // IN_TUPLE_2: Begin completions
-// IN_TUPLE_2: Decl[LocalVar]/Local:               localStr[#String#]; name=localStr
-// IN_TUPLE_2: Decl[LocalVar]/Local/TypeRelation[Identical]: localInt[#Int#]; name=localInt
+// IN_TUPLE_2-DAG: Decl[LocalVar]/Local:               localStr[#String#]; name=localStr
+// IN_TUPLE_2-DAG: Decl[LocalVar]/Local/TypeRelation[Identical]: localInt[#Int#]; name=localInt
 // IN_TUPLE_2: End completions
 
 var ownInit1: Int = #^OWN_INIT_1^#
@@ -574,8 +578,7 @@ class InAccessorTestQualified {
     get {
       let _ = self.#^OWN_ACCESSOR_13^#
 // OWN_ACCESSOR_13: Begin completions
-// OWN_ACCESSOR_13-DAG: Decl[InstanceVar]/CurrNominal:      inAccessorProp[#Int#];
-// OWN_ACCESSOR_13: End completions
+// OWN_ACCESSOR_13: Decl[InstanceVar]/CurrNominal:      inAccessorProp[#Int#];
       let _ = \InAccessorTestQualified.#^OWN_ACCESSOR_14?check=OWN_ACCESSOR_13^#
     }
     set {

test/IDE/complete_multibracestmt.swift

@@ -33,7 +33,7 @@ func test(pred: Bool) {
 }
 
 // CHECK: Begin completions, 3 items
-// CHECK: Decl[EnumElement]/ExprSpecific/TypeRelation[Identical]: bar[#E#]; name=bar
-// CHECK: Decl[EnumElement]/ExprSpecific/TypeRelation[Identical]: foo[#E#]; name=foo
-// CHECK: Decl[InstanceMethod]/CurrNominal/TypeRelation[Invalid]: hash({#(self): E#})[#(into: inout Hasher) -> Void#]; name=hash(self: E)
+// CHECK-DAG: Decl[EnumElement]/ExprSpecific/TypeRelation[Identical]: bar[#E#]; name=bar
+// CHECK-DAG: Decl[EnumElement]/ExprSpecific/TypeRelation[Identical]: foo[#E#]; name=foo
+// CHECK-DAG: Decl[InstanceMethod]/CurrNominal/TypeRelation[Invalid]: hash({#(self): E#})[#(into: inout Hasher) -> Void#]; name=hash(self: E)
 // CHECK: End completions