Merge pull request #8126 from eeckstein/newmangling

Mangling: enable new mangling for symbols

include/swift/Demangling/ManglingMacros.h

@@ -18,7 +18,7 @@
 // TODO: When we get rid of the old mangling, the term "new mangling" should
 // just be renamed to "mangling".
 
-//#define USE_NEW_MANGLING
+#define USE_NEW_MANGLING
 
 #define STRINGIFY_MANGLING(M) #M
 #define MANGLE_AS_STRING(M) STRINGIFY_MANGLING(M)

test/DebugInfo/Errors.swift

@@ -11,12 +11,12 @@ enum MyError : Error {
 // thrown error we create a shadow stack location holding the address of the
 // location that holds the pointer to the error instead.
 func simple(_ placeholder: Int64) throws -> () {
-  // CHECK: define {{.*}}void @_TF6Errors6simpleFzVs5Int64T_(i64, %swift.refcounted* swiftself, %swift.error**)
+  // CHECK: define {{.*}}void @_T06Errors6simpleys5Int64VKF(i64, %swift.refcounted* swiftself, %swift.error**)
   // CHECK: call void @llvm.dbg.declare
   // CHECK: call void @llvm.dbg.declare({{.*}}, metadata ![[ERROR:[0-9]+]], metadata ![[DEREF:[0-9]+]])
   // CHECK: ![[ERROR]] = !DILocalVariable(name: "$error", arg: 2,
   // CHECK-SAME:              type: ![[ERRTY:.*]], flags: DIFlagArtificial)
-  // CHECK: ![[ERRTY]] = !DICompositeType({{.*}}identifier: "_TtPs5Error_"
+  // CHECK: ![[ERRTY]] = !DICompositeType({{.*}}identifier: "_T0s5Error_pD"
   // CHECK: ![[DEREF]] = !DIExpression(DW_OP_deref)
   throw MyError.Simple
 }

test/DebugInfo/LinetableArtificialFn.swift

@@ -3,7 +3,7 @@
 // Verify that a helper function that is generated on-the-fly does
 // not mess up the linetable of the calling function.
 // CHECK:  store i2048 10, i2048* [[STKLOC:%.*]], align
-// CHECK:  call swiftcc {{(i32|i64)}} @_TFSiCfT22_builtinIntegerLiteralBi2048__Si(i2048* {{.*}} [[STKLOC]]
+// CHECK:  call swiftcc {{(i32|i64)}} @_T0S2iBi2048_22_builtinIntegerLiteral_tcfC(i2048* {{.*}} [[STKLOC]]
 // CHECK: store {{(i32|i64)}} {{.*}}getelementptr
 // CHECK: store {{(i32|i64)}} {{.*}}getelementptr{{.*}}, !dbg ![[DBG:[0-9]+]]
 // CHECK-NOT: ![[DBG]] = !{i32 0, i32 0,

test/DebugInfo/basic.swift

@@ -51,7 +51,7 @@ func foo(_ a: Int64, _ b: Int64) -> Int64 {
        // CHECK-DAG: smul{{.*}}, !dbg ![[MUL:[0-9]+]]
        // CHECK-DAG: [[MUL]] = !DILocation(line: [[@LINE+4]], column: 16,
        // Runtime call to multiply function:
-       // CHECK-NOSIL: @_TFsoi1mFTVs5Int64S__S_{{.*}}, !dbg ![[MUL:[0-9]+]]
+       // CHECK-NOSIL: @_T0s1mois5Int64VAC_ACtF{{.*}}, !dbg ![[MUL:[0-9]+]]
        // CHECK-NOSIL: [[MUL]] = !DILocation(line: [[@LINE+1]], column: 16,
        return a*b
      } else {
@@ -74,7 +74,7 @@ func foo(_ a: Int64, _ b: Int64) -> Int64 {
 
 // Function type for foo.
 // CHECK-DAG: ![[FOOTYPE]] = !DISubroutineType(types: ![[PARAMTYPES:[0-9]+]])
-// CHECK-DAG: ![[INT64:.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Int64", {{.*}}, identifier: "_TtVs5Int64")
+// CHECK-DAG: ![[INT64:.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Int64", {{.*}}, identifier: "_T0s5Int64VD")
 // CHECK-DAG: ![[PARAMTYPES]] = !{![[INT64]], ![[INT64]], ![[INT64]]}
 // Import of the main module with the implicit name.
 // CHECK-DAG: !DIImportedEntity(tag: DW_TAG_imported_module, scope: ![[MAINFILE]], entity: ![[MAINMODULE:[0-9]+]], line: 1)

test/DebugInfo/bool.swift

@@ -3,7 +3,7 @@
 func markUsed<T>(_ t: T) {}
 
 // Int1 uses 1 bit, but is aligned at 8 bits.
-// CHECK: !DIBasicType(name: "_TtBi1_", size: 1, encoding: DW_ATE_unsigned)
+// CHECK: !DIBasicType(name: "_T0Bi1_D", size: 1, encoding: DW_ATE_unsigned)
 func main() {
   var t = true
   var f = false

test/DebugInfo/byref-capture.swift

@@ -9,7 +9,7 @@ func makeIncrementor(_ inc : Int64) -> () -> Int64
     // CHECK-SAME:                        metadata ![[SUM_CAPTURE:[0-9]+]],
     // CHECK-SAME:                        metadata ![[EMPTY:.*]])
     // CHECK: ![[EMPTY]] = !DIExpression()
-    // CHECK: ![[INOUTTY:[0-9]+]] = !DICompositeType({{.*}}identifier: "_TtRVs5Int64"
+    // CHECK: ![[INOUTTY:[0-9]+]] = !DICompositeType({{.*}}identifier: "_T0s5Int64VzD"
     //                                                              ^ inout type.
     // CHECK: ![[SUM_CAPTURE]] = !DILocalVariable(name: "sum", arg: 1,
     // CHECK-SAME:     line: [[@LINE-10]], type: ![[INOUTTY]]

test/DebugInfo/enum.swift

@@ -10,34 +10,34 @@ enum Either {
 // CHECK-SAME:             size: {{328|168}},
 }
 // CHECK: ![[EMPTY:.*]] = !{}
-// DWARF: ![[INT:.*]] = !DICompositeType({{.*}}identifier: "_TtSi"
+// DWARF: ![[INT:.*]] = !DICompositeType({{.*}}identifier: "_T0SiD"
 let E : Either = .Neither;
 
 // CHECK: !DICompositeType({{.*}}name: "Color",
 // CHECK-SAME:             line: [[@LINE+3]]
 // CHECK-SAME:             size: 8, align: 8,
-// CHECK-SAME:             identifier: "_TtO4enum5Color"
+// CHECK-SAME:             identifier: "_T04enum5ColorOD"
 enum Color : UInt64 {
 // This is effectively a 2-bit bitfield:
 // DWARF: !DIDerivedType(tag: DW_TAG_member, name: "Red"
 // DWARF-SAME:           baseType: ![[UINT64:[0-9]+]]
 // DWARF-SAME:           size: 8, align: 8{{[,)]}}
-// DWARF: ![[UINT64]] = !DICompositeType({{.*}}identifier: "_TtVs6UInt64"
+// DWARF: ![[UINT64]] = !DICompositeType({{.*}}identifier: "_T0s6UInt64VD"
   case Red, Green, Blue
 }
 
 // CHECK: !DICompositeType({{.*}}name: "MaybeIntPair",
 // CHECK-SAME:             line: [[@LINE+3]],
 // CHECK-SAME:             size: 136, align: 64{{[,)]}}
-// CHECK-SAME:             identifier: "_TtO4enum12MaybeIntPair"
+// CHECK-SAME:             identifier: "_T04enum12MaybeIntPairOD"
 enum MaybeIntPair {
 // DWARF: !DIDerivedType(tag: DW_TAG_member, name: "none"
 // DWARF-SAME:           baseType: ![[INT]], align: 8{{[,)]}}
   case none
 // DWARF: !DIDerivedType(tag: DW_TAG_member, name: "just"
 // DWARF-SAME:           baseType: ![[INTTUP:[0-9]+]]
 // DWARF-SAME:           size: 128, align: 64{{[,)]}}
-// DWARF: ![[INTTUP]] = !DICompositeType({{.*}}identifier: "_TtTVs5Int64S__"
+// DWARF: ![[INTTUP]] = !DICompositeType({{.*}}identifier: "_T0s5Int64V_ABtD"
   case just(Int64, Int64)
 }
 
@@ -51,36 +51,36 @@ let c = MaybeIntPair.just(74, 75)
 // CHECK: !DICompositeType({{.*}}name: "Maybe",
 // CHECK-SAME:             line: [[@LINE-8]],
 // CHECK-SAME:             size: 8, align: 8{{[,)]}}
-// CHECK-SAME:             identifier: "_TtGO4enum5MaybeOS_5Color_"
+// CHECK-SAME:             identifier: "_T04enum5MaybeOyAA5ColorOGD"
 let movie : Maybe<Color> = .none
 
 public enum Nothing { }
 public func foo(_ empty : Nothing) { }
 // CHECK: !DICompositeType({{.*}}name: "Nothing", {{.*}}elements: ![[EMPTY]]
 
 // CHECK: !DICompositeType({{.*}}name: "Rose", {{.*}}elements: ![[ELTS:[0-9]+]],
-// CHECK-SAME:             {{.*}}identifier: "_TtGO4enum4Rosex_")
+// CHECK-SAME:             {{.*}}identifier: "_T04enum4RoseOyxGD")
 enum Rose<A> {
 	case MkRose(() -> A, () -> [Rose<A>])
-  // DWARF: !DICompositeType({{.*}}name: "Rose",{{.*}}identifier: "_TtGO4enum4RoseQq_S0__")
+  // DWARF: !DICompositeType({{.*}}name: "Rose",{{.*}}identifier: "_T04enum4RoseOyAA3fooACyxGAElFQq_GD")
 	case IORose(() -> Rose<A>)
 }
 
 func foo<T>(_ x : Rose<T>) -> Rose<T> { return x }
 
 // CHECK: !DICompositeType({{.*}}name: "Tuple", {{.*}}elements: ![[ELTS:[0-9]+]],
-// CHECK-SAME:             {{.*}}identifier: "_TtGO4enum5TupleQq_FS_3barurFGS0_x_GS0_x__")
+// CHECK-SAME:             {{.*}}identifier: "_T04enum5TupleOyAA3barACyxGAElFQq_GD")
 // DWARF: !DICompositeType({{.*}}name: "Tuple", {{.*}}elements: ![[ELTS:[0-9]+]],
-// DWARF-SAME:             {{.*}}identifier: "_TtGO4enum5Tuplex_")
+// DWARF-SAME:             {{.*}}identifier: "_T04enum5TupleOyxGD")
 public enum Tuple<P> {
-  // DWARF: !DICompositeType({{.*}}name: "Tuple",{{.*}}identifier: "_TtGO4enum5TupleQq_S0__")
+  // DWARF: !DICompositeType({{.*}}name: "Tuple",{{.*}}identifier: "_T04enum5TupleOyAA3barACyxGAElFQq_GD")
 	case C(P, () -> Tuple)
 }
 
 func bar<T>(_ x : Tuple<T>) -> Tuple<T> { return x }
 
 // CHECK: !DILocalVariable(name: "self", arg: 1, {{.*}} line: [[@LINE+5]], type: ![[LIST:.*]], flags: DIFlagArtificial)
-// CHECK: ![[LIST]] = !DICompositeType({{.*}}identifier: "_TtGO4enum4ListQq_S0__"
+// CHECK: ![[LIST]] = !DICompositeType({{.*}}identifier: "_T04enum4ListOyACQq_GD"
 public enum List<T> {
        indirect case Tail(List, T)
        case End

test/DebugInfo/fnptr.swift

@@ -3,7 +3,7 @@
 
 // CHECK-DAG: ![[SINODE:.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Int64",{{.*}} identifier: [[SI:.*]])
 // CHECK-DAG: ![[SFNODE:.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Float",{{.*}} identifier: [[SF:.*]])
-// CHECK-DAG: ![[VOIDNODE:.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "_TtT_",{{.*}} identifier: [[VOID:.*]])
+// CHECK-DAG: ![[VOIDNODE:.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "_T0ytD",{{.*}} identifier: [[VOID:.*]])
 func bar() {
     print("bar()", terminator: "")
 }
@@ -12,34 +12,34 @@ func barz(_ i: Float, _ j: Float) -> Int64 { return 0; }
 func main() -> Int64 {
     // CHECK-DAG: !DILocalVariable(name: "bar_fnptr",{{.*}} line: [[@LINE+3]],{{.*}} type: ![[BARPT:[0-9]+]]
     // AST-DAG: !DILocalVariable(name: "bar_fnptr",{{.*}} line: [[@LINE+2]],{{.*}} type: ![[BAR_T:[0-9]+]]
-    // AST-DAG: ![[BAR_T]] = !DICompositeType({{.*}}, identifier: "_TtXFo___")
+    // AST-DAG: ![[BAR_T]] = !DICompositeType({{.*}}, identifier: "_T0Ix_D")
     var bar_fnptr = bar
     // CHECK-DAG: ![[BARPT]] = !DICompositeType(tag: DW_TAG_structure_type, {{.*}} elements: ![[BARMEMBERS:[0-9]+]]
     // CHECK-DAG: ![[BARMEMBERS]] = !{![[BARMEMBER:.*]], {{.*}}}
     // CHECK-DAG: ![[BARMEMBER]] = !DIDerivedType(tag: DW_TAG_member,{{.*}} baseType: ![[BARPTR:[0-9]+]]
     // CHECK-DAG: ![[BARPTR]] = !DIDerivedType(tag: DW_TAG_pointer_type,{{.*}} baseType: ![[BART:[0-9]+]]
     // CHECK-DAG: ![[BART]] = !DISubroutineType(types: ![[BARARGS:[0-9]+]])
     // CHECK-DAG: ![[BARARGS]] = !{![[VOID:.*]]}
-    // CHECK-DAG: ![[VOID]] = {{.*}}identifier: "_TtT_"
+    // CHECK-DAG: ![[VOID]] = {{.*}}identifier: "_T0ytD"
     bar_fnptr();
 
     // CHECK-DAG: !DILocalVariable(name: "baz_fnptr",{{.*}} type: ![[BAZPT:[0-9]+]]
     // AST-DAG: !DILocalVariable(name: "baz_fnptr",{{.*}} type: ![[BAZ_T:[0-9]+]]
-    // AST-DAG: ![[BAZ_T]] = !DICompositeType({{.*}}, identifier: "_TtXFo_dSf_dVs5Int64_")
+    // AST-DAG: ![[BAZ_T]] = !DICompositeType({{.*}}, identifier: "_T0Sfs5Int64VIxyd_D")
     // CHECK-DAG: ![[BAZPT]] = !DICompositeType(tag: DW_TAG_structure_type, {{.*}} elements: ![[BAZMEMBERS:[0-9]+]]
     // CHECK-DAG: ![[BAZMEMBERS]] = !{![[BAZMEMBER:.*]], {{.*}}}
     // CHECK-DAG: ![[BAZMEMBER]] = !DIDerivedType(tag: DW_TAG_member,{{.*}} baseType: ![[BAZPTR:[0-9]+]]
     // CHECK-DAG: ![[BAZPTR]] = !DIDerivedType(tag: DW_TAG_pointer_type,{{.*}} baseType: ![[BAZT:[0-9]+]]
     // CHECK-DAG: ![[BAZT]] = !DISubroutineType(types: ![[BAZARGS:.*]])
     // CHECK-DAG: ![[BAZARGS]] = !{![[INT:.*]], ![[FLOAT:.*]]}
-    // CHECK-DAG: ![[INT]] = {{.*}}identifier: "_TtVs5Int64"
-    // CHECK-DAG: ![[FLOAT]] = {{.*}}identifier: "_TtSf"
+    // CHECK-DAG: ![[INT]] = {{.*}}identifier: "_T0s5Int64VD"
+    // CHECK-DAG: ![[FLOAT]] = {{.*}}identifier: "_T0SfD"
     var baz_fnptr = baz
     baz_fnptr(2.89)
 
     // CHECK-DAG: !DILocalVariable(name: "barz_fnptr",{{.*}} type: ![[BARZPT:[0-9]+]]
     // AST_DAG: !DILocalVariable(name: "barz_fnptr",{{.*}} type: ![[BARZ_T:[0-9]+]]
-    // AST-DAG: ![[BARZ_T:[0-9]+]] = !DICompositeType({{.*}}, identifier: "_TtXFo_dSfdSf_dVs5Int64_")
+    // AST-DAG: ![[BARZ_T:[0-9]+]] = !DICompositeType({{.*}}, identifier: "_T0S2fs5Int64VIxyyd_D")
     // CHECK-DAG: ![[BARZPT]] = !DICompositeType(tag: DW_TAG_structure_type,{{.*}} elements: ![[BARZMEMBERS:[0-9]+]]
     // CHECK-DAG: ![[BARZMEMBERS]] = !{![[BARZMEMBER:.*]], {{.*}}}
     // CHECK-DAG: ![[BARZMEMBER]] = !DIDerivedType(tag: DW_TAG_member,{{.*}} baseType: ![[BARZPTR:[0-9]+]]

test/DebugInfo/inout.swift

@@ -8,24 +8,24 @@
 func Close(_ fn: () -> Int64) { fn() }
 typealias MyFloat = Float
 
-// CHECK: define hidden {{.*}}void @_TF5inout13modifyFooHeap
+// CHECK: define hidden swiftcc void @_T05inout13modifyFooHeap{{[_0-9a-zA-Z]*}}F
 // CHECK: %[[ALLOCA:.*]] = alloca %Ts5Int64V*
 // CHECK: call void @llvm.dbg.declare(metadata
 // CHECK-SAME:                        %[[ALLOCA]], metadata ![[A:[0-9]+]]
 
 // Closure with promoted capture.
-// PROMO-CHECK: define {{.*}}@_TFF5inout13modifyFooHeapFTRVs5Int64Sf_T_U_FT_S0_
+// PROMO-CHECK: define {{.*}}@_T05inout13modifyFooHeapys5Int64Vz_SftFADycfU_
 // PROMO-CHECK: call void @llvm.dbg.declare(metadata %Ts5Int64V** %
 // PROMO-CHECK-SAME:   metadata ![[A1:[0-9]+]], metadata ![[EMPTY_EXPR:[0-9]+]])
 
 // PROMO-CHECK-DAG: ![[EMPTY_EXPR]] = !DIExpression()
-// PROMO-CHECK-DAG: ![[INT:.*]] = !DICompositeType({{.*}}identifier: "_TtVs5Int64"
-// PROMO-CHECK-DAG: ![[INT:.*]] = !DICompositeType({{.*}}identifier: "_TtRVs5Int64"
+// PROMO-CHECK-DAG: ![[INT:.*]] = !DICompositeType({{.*}}identifier: "_T0s5Int64VD"
+// PROMO-CHECK-DAG: ![[INT:.*]] = !DICompositeType({{.*}}identifier: "_T0s5Int64VzD"
 // PROMO-CHECK: ![[A1]] = !DILocalVariable(name: "a", arg: 1
 // PROMO-CHECK-SAME:                       type: ![[INT]]
 func modifyFooHeap(_ a: inout Int64,
   // CHECK-DAG: ![[A]] = !DILocalVariable(name: "a", arg: 1{{.*}} line: [[@LINE-1]],{{.*}} type: ![[RINT:[0-9]+]]
-  // CHECK-DAG: ![[RINT]] = !DICompositeType({{.*}}identifier: "_TtRVs5Int64"
+  // CHECK-DAG: ![[RINT]] = !DICompositeType({{.*}}identifier: "_T0s5Int64VzD"
                    _ b: MyFloat)
 {
     let b = b
@@ -38,17 +38,17 @@ func modifyFooHeap(_ a: inout Int64,
 }
 
 // Inout reference type.
-// FOO-CHECK: define {{.*}}@_TF5inout9modifyFooFTRVs5Int64Sf_T_
+// FOO-CHECK: define {{.*}}@_T05inout9modifyFooys5Int64Vz_SftF
 // FOO-CHECK: call void @llvm.dbg.declare(metadata %Ts5Int64V** %
 // FOO-CHECK-SAME:          metadata ![[U:[0-9]+]], metadata ![[EMPTY_EXPR:.*]])
 // FOO-CHECK: ![[EMPTY_EXPR]] = !DIExpression()
 func modifyFoo(_ u: inout Int64,
 // FOO-CHECK-DAG: !DILocalVariable(name: "v", arg: 2{{.*}} line: [[@LINE+3]],{{.*}} type: ![[MYFLOAT:[0-9]+]]
   // FOO-CHECK-DAG: [[U]] = !DILocalVariable(name: "u", arg: 1{{.*}} line: [[@LINE-2]],{{.*}} type: ![[RINT:[0-9]+]]
-  // FOO-CHECK-DAG: ![[RINT]] = !DICompositeType({{.*}}identifier: "_TtRVs5Int64"
+  // FOO-CHECK-DAG: ![[RINT]] = !DICompositeType({{.*}}identifier: "_T0s5Int64VzD"
                _ v: MyFloat)
-// FOO-CHECK-DAG: ![[MYFLOAT]] = !DIDerivedType(tag: DW_TAG_typedef, name: "_Tta5inout7MyFloat",{{.*}} baseType: ![[FLOAT:[0-9]+]]
-// FOO-CHECK-DAG: ![[FLOAT]] = !DICompositeType({{.*}}identifier: "_TtSf"
+// FOO-CHECK-DAG: ![[MYFLOAT]] = !DIDerivedType(tag: DW_TAG_typedef, name: "_T05inout7MyFloataD",{{.*}} baseType: ![[FLOAT:[0-9]+]]
+// FOO-CHECK-DAG: ![[FLOAT]] = !DICompositeType({{.*}}identifier: "_T0SfD"
 {
     if (v > 2.71) {
       u = u - 41

test/DebugInfo/mangling-stdlib.swift

@@ -1,3 +1,3 @@
 // RUN: %target-swift-frontend -parse-stdlib %s -emit-ir -g -o - | %FileCheck %s
-// CHECK:  !DIDerivedType(tag: DW_TAG_typedef, name: "_TtBb",
+// CHECK:  !DIDerivedType(tag: DW_TAG_typedef, name: "_T0BbD",
 var bo : Builtin.BridgeObject

test/DebugInfo/mangling.swift

@@ -8,7 +8,7 @@ func markUsed<T>(_ t: T) {}
 // Variable:
 // mangling.myDict : Swift.Dictionary<Swift.Int64, Swift.String>
 // CHECK: !DIGlobalVariable(name: "myDict",
-// CHECK-SAME:       linkageName: "_Tv8mangling6myDictGVs10DictionaryVs5Int64SS_",
+// CHECK-SAME:       linkageName: "_T08mangling6myDicts10DictionaryVys5Int64VSSGv",
 // CHECK-SAME:              line: [[@LINE+3]]
 // CHECK-SAME:              type: ![[DT:[0-9]+]]
 // CHECK: ![[DT]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Dictionary"
@@ -17,24 +17,24 @@ myDict[12] = "Hello!"
 
 // mangling.myTuple1 : (Name : Swift.String, Id : Swift.Int64)
 // CHECK: !DIGlobalVariable(name: "myTuple1",
-// CHECK-SAME:       linkageName: "_Tv8mangling8myTuple1T4NameSS2IdVs5Int64_",
+// CHECK-SAME:       linkageName: "_T08mangling8myTuple1SS4Name_s5Int64V2Idtv",
 // CHECK-SAME:              line: [[@LINE+3]]
 // CHECK-SAME:              type: ![[TT1:[0-9]+]]
-// CHECK: ![[TT1]] = !DICompositeType(tag: DW_TAG_structure_type, name: "_TtT4NameSS2IdVs5Int64_"
+// CHECK: ![[TT1]] = !DICompositeType(tag: DW_TAG_structure_type, name: "_T0SS4Name_s5Int64V2IdtD"
 var myTuple1 : (Name: String, Id: Int64) = ("A", 1)
 // mangling.myTuple2 : (Swift.String, Id : Swift.Int64)
 // CHECK: !DIGlobalVariable(name: "myTuple2",
-// CHECK-SAME:       linkageName: "_Tv8mangling8myTuple2TSS2IdVs5Int64_",
+// CHECK-SAME:       linkageName: "_T08mangling8myTuple2SS_s5Int64V2Idtv",
 // CHECK-SAME:              line: [[@LINE+3]]
 // CHECK-SAME:              type: ![[TT2:[0-9]+]]
-// CHECK: ![[TT2]] = !DICompositeType(tag: DW_TAG_structure_type, name: "_TtTSS2IdVs5Int64_"
+// CHECK: ![[TT2]] = !DICompositeType(tag: DW_TAG_structure_type, name: "_T0SS_s5Int64V2IdtD"
 var myTuple2 : (      String, Id: Int64) = ("B", 2)
 // mangling.myTuple3 : (Swift.String, Swift.Int64)
 // CHECK: !DIGlobalVariable(name: "myTuple3",
-// CHECK-SAME:       linkageName: "_Tv8mangling8myTuple3TSSVs5Int64_",
+// CHECK-SAME:       linkageName: "_T08mangling8myTuple3SS_s5Int64Vtv",
 // CHECK-SAME:              line: [[@LINE+3]]
 // CHECK-SAME:              type: ![[TT3:[0-9]+]]
-// CHECK: ![[TT3]] = !DICompositeType(tag: DW_TAG_structure_type, name: "_TtTSSVs5Int64_"
+// CHECK: ![[TT3]] = !DICompositeType(tag: DW_TAG_structure_type, name: "_T0SS_s5Int64VtD"
 var myTuple3 : (      String,     Int64) = ("C", 3)
 
 markUsed(myTuple1.Id)

test/DebugInfo/test-foundation.swift

@@ -12,7 +12,7 @@ import Foundation
 
 class MyObject : NSObject {
   // Ensure we don't emit linetable entries for ObjC thunks.
-  // LOC-CHECK: define {{.*}} @_TToFC4main8MyObjectg5MyArrCSo7NSArray
+  // LOC-CHECK: define {{.*}} @_T04main8MyObjectC0B3ArrSo7NSArrayCfgTo
   // LOC-CHECK: ret {{.*}}, !dbg ![[DBG:.*]]
   // LOC-CHECK: ret
   var MyArr = NSArray()
@@ -33,7 +33,7 @@ extension MyObject {
   }
 }
 
-// SANITY-DAG: ![[NSOBJECT:.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "NSObject",{{.*}} identifier: "_TtCSo8NSObject"
+// SANITY-DAG: ![[NSOBJECT:.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "NSObject",{{.*}} identifier: "_T0So8NSObjectC"
 // SANITY-DAG: !DIGlobalVariable(name: "NsObj",{{.*}} line: [[@LINE+1]],{{.*}} type: ![[NSOBJECT]],{{.*}} isDefinition: true
 var NsObj: NSObject
 NsObj = MyObject()
@@ -43,7 +43,7 @@ MyObj.blah()
 
 public func err() {
   // DWARF-CHECK: DW_AT_name{{.*}}NSError
-  // DWARF-CHECK: DW_AT_linkage_name{{.*}}_TtCSo7NSError
+  // DWARF-CHECK: DW_AT_linkage_name{{.*}}_T0So7NSErrorC
   let _ = NSError(domain: "myDomain", code: 4, 
                   userInfo: [AnyHashable("a"):1,
                              AnyHashable("b"):2,
@@ -52,11 +52,11 @@ public func err() {
 
 // LOC-CHECK: define {{.*}}4date
 public func date() {
-  // LOC-CHECK: call {{.*}} @_TFSSCfT21_builtinStringLiteralBp17utf8CodeUnitCountBw7isASCIIBi1__SS{{.*}}, !dbg ![[L1:.*]]
+  // LOC-CHECK: call {{.*}} @_T0S2SBp21_builtinStringLiteral_Bw17utf8CodeUnitCountBi1_7isASCIItcfC{{.*}}, !dbg ![[L1:.*]]
   let d1 = DateFormatter()
   // LOC-CHECK: br{{.*}}, !dbg ![[L2:.*]]
   d1.dateFormat = "dd. mm. yyyy" // LOC-CHECK: call{{.*}}objc_msgSend{{.*}}, !dbg ![[L2]]
-  // LOC-CHECK: call {{.*}} @_TFSSCfT21_builtinStringLiteralBp17utf8CodeUnitCountBw7isASCIIBi1__SS{{.*}}, !dbg ![[L3:.*]]
+  // LOC-CHECK: call {{.*}} @_T0S2SBp21_builtinStringLiteral_Bw17utf8CodeUnitCountBi1_7isASCIItcfC{{.*}}, !dbg ![[L3:.*]]
   let d2 = DateFormatter()
   // LOC-CHECK: br{{.*}}, !dbg ![[L4:.*]]
   d2.dateFormat = "mm dd yyyy" // LOC-CHECK: call{{.*}}objc_msgSend{{.*}}, !dbg ![[L4]]
@@ -68,7 +68,7 @@ func useOptions(_ opt: URL.BookmarkCreationOptions)
   return [opt, opt]
 }
 
-// LOC-CHECK: ![[THUNK:.*]] = distinct !DISubprogram({{.*}}linkageName: "_TToFC4main8MyObjectg5MyArrCSo7NSArray"
+// LOC-CHECK: ![[THUNK:.*]] = distinct !DISubprogram({{.*}}linkageName: "_T04main8MyObjectC0B3ArrSo7NSArrayCfgTo"
 // LOC-CHECK-NOT:                           line:
 // LOC-CHECK-SAME:                          isDefinition: true
 // LOC-CHECK: ![[DBG]] = !DILocation(line: 0, scope: ![[THUNK]])

test/DebugInfo/test_ints.swift

@@ -8,11 +8,11 @@ var a : Int64 = 2
 // CHECK-SAME:             size: 64, align: 64
 // CHECK-NOT:              offset: 0
 // CHECK-NOT:              DIFlagFwdDecl
-// CHECK-SAME:             identifier: "_TtVs5Int64"
+// CHECK-SAME:             identifier: "_T0s5Int64VD"
 
 // CHECK: !DIGlobalVariable(name: "b",{{.*}} line: [[@LINE+2]]
 // CHECK-SAME:              type: ![[INT:[0-9]+]]
 var b = 2
 // CHECK: ![[INT]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Int"
-// CHECK-SAME:                        identifier: "_TtSi"
+// CHECK-SAME:                        identifier: "_T0SiD"