change mangling prefix from $S to $s

include/swift/Demangling/ManglingMacros.h

@@ -17,7 +17,7 @@
 #define MANGLE_AS_STRING(M) STRINGIFY_MANGLING(M)
 
 /// The mangling prefix for the new mangling.
-#define MANGLING_PREFIX $S
+#define MANGLING_PREFIX $s
 
 #define MANGLING_PREFIX_STR MANGLE_AS_STRING(MANGLING_PREFIX)
 

test/APINotes/versioned-test-mangling.swift

@@ -1,10 +1,10 @@
 // RUN: %empty-directory(%t)
 
-// RUN: %target-swift-ide-test -F %S/Inputs/custom-frameworks -print-ast-typechecked -source-filename %s -swift-version 4 -find-mangled '$SSo11SomeCStructV' | %FileCheck -check-prefix=CHECK-TOP-ALIAS-4 %s
-// RUN: %target-swift-ide-test -F %S/Inputs/custom-frameworks -print-ast-typechecked -source-filename %s -swift-version 5 -find-mangled '$SSo11SomeCStructV' | %FileCheck -check-prefix=CHECK-TOP-ALIAS-5 %s
+// RUN: %target-swift-ide-test -F %S/Inputs/custom-frameworks -print-ast-typechecked -source-filename %s -swift-version 4 -find-mangled '$sSo11SomeCStructV' | %FileCheck -check-prefix=CHECK-TOP-ALIAS-4 %s
+// RUN: %target-swift-ide-test -F %S/Inputs/custom-frameworks -print-ast-typechecked -source-filename %s -swift-version 5 -find-mangled '$sSo11SomeCStructV' | %FileCheck -check-prefix=CHECK-TOP-ALIAS-5 %s
 
-// RUN: %target-swift-ide-test -F %S/Inputs/custom-frameworks -print-ast-typechecked -source-filename %s -swift-version 4 -find-mangled '$SSo13InnerInSwift5V' | %FileCheck -check-prefix=CHECK-NESTED-ALIAS-4 %s
-// RUN: %target-swift-ide-test -F %S/Inputs/custom-frameworks -print-ast-typechecked -source-filename %s -swift-version 5 -find-mangled '$SSo13InnerInSwift5V' | %FileCheck -check-prefix=CHECK-NESTED-ALIAS-5 %s
+// RUN: %target-swift-ide-test -F %S/Inputs/custom-frameworks -print-ast-typechecked -source-filename %s -swift-version 4 -find-mangled '$sSo13InnerInSwift5V' | %FileCheck -check-prefix=CHECK-NESTED-ALIAS-4 %s
+// RUN: %target-swift-ide-test -F %S/Inputs/custom-frameworks -print-ast-typechecked -source-filename %s -swift-version 5 -find-mangled '$sSo13InnerInSwift5V' | %FileCheck -check-prefix=CHECK-NESTED-ALIAS-5 %s
 
 import APINotesFrameworkTest
 

test/APINotes/versioned.swift

@@ -251,14 +251,14 @@ func testRenamedOptionyEnum() {
 #if !swift(>=5)
 
 func useSwift4Name(_: ImportantCStruct) {}
-// CHECK-SILGEN-4: sil hidden @$S9versioned13useSwift4NameyySo11SomeCStructVF
+// CHECK-SILGEN-4: sil hidden @$s9versioned13useSwift4NameyySo11SomeCStructVF
 
 func useNewlyNested(_: InnerInSwift5) {}
-// CHECK-SILGEN-4: sil hidden @$S9versioned14useNewlyNestedyySo13InnerInSwift5VF
+// CHECK-SILGEN-4: sil hidden @$s9versioned14useNewlyNestedyySo13InnerInSwift5VF
 #endif
 
 func useSwift5Name(_: VeryImportantCStruct) {}
-// CHECK-SILGEN: sil hidden @$S9versioned13useSwift5NameyySo11SomeCStructVF
+// CHECK-SILGEN: sil hidden @$s9versioned13useSwift5NameyySo11SomeCStructVF
 
 
 

test/ClangImporter/MixedSource/forward-declarations.swift

@@ -1,7 +1,7 @@
 // RUN: %target-swift-frontend -emit-ir -primary-file %s %S/Inputs/forward-declarations-other.swift -import-objc-header %S/Inputs/forward-declarations.h -enable-objc-interop -disable-objc-attr-requires-foundation-module -module-name main | %FileCheck %s
 
 class Sub: Base {
-  // CHECK-LABEL: define{{.*}} void @"$S4main3SubC4testyyF"
+  // CHECK-LABEL: define{{.*}} void @"$s4main3SubC4testyyF"
   func test() {
     // CHECK: [[BASE_SELF:%.+]] = bitcast %T4main3SubC* %0 to %TSo4BaseC*
     // CHECK: [[SELECTOR:%.+]] = load i8*, i8** @"\01L_selector(getClassInstanceWithoutMentioningItsName)"

test/ClangImporter/attr-swift_private.swift

@@ -91,17 +91,17 @@ public func testTopLevel() {
 #endif
 }
 
-// CHECK-LABEL: define linkonce_odr hidden swiftcc %swift.metadata_response @"$SSo10PrivFooSubCMa{{.*}} {
+// CHECK-LABEL: define linkonce_odr hidden swiftcc %swift.metadata_response @"$sSo10PrivFooSubCMa{{.*}} {
 // CHECK: %objc_class** @"\01l_OBJC_CLASS_REF_$_PrivFooSub"
 // CHECK: }
 
-// CHECK-LABEL: define linkonce_odr hidden {{.+}} @"$SSo3BarC8__noArgsABSgyt_tcfcTO"
+// CHECK-LABEL: define linkonce_odr hidden {{.+}} @"$sSo3BarC8__noArgsABSgyt_tcfcTO"
 // CHECK: @"\01L_selector(initWithNoArgs)"
-// CHECK-LABEL: define linkonce_odr hidden {{.+}} @"$SSo3BarC8__oneArgABSgs5Int32V_tcfcTO"
+// CHECK-LABEL: define linkonce_odr hidden {{.+}} @"$sSo3BarC8__oneArgABSgs5Int32V_tcfcTO"
 // CHECK: @"\01L_selector(initWithOneArg:)"
-// CHECK-LABEL: define linkonce_odr hidden {{.+}} @"$SSo3BarC9__twoArgs5otherABSgs5Int32V_AGtcfcTO"
+// CHECK-LABEL: define linkonce_odr hidden {{.+}} @"$sSo3BarC9__twoArgs5otherABSgs5Int32V_AGtcfcTO"
 // CHECK: @"\01L_selector(initWithTwoArgs:other:)"
-// CHECK-LABEL: define linkonce_odr hidden {{.+}} @"$SSo3BarC2__ABSgs5Int32V_tcfcTO"
+// CHECK-LABEL: define linkonce_odr hidden {{.+}} @"$sSo3BarC2__ABSgs5Int32V_tcfcTO"
 // CHECK: @"\01L_selector(init:)"
 
 _ = __PrivAnonymousA

test/ClangImporter/ctypes_ir.swift

@@ -4,19 +4,19 @@
 
 import ctypes
 
-// CHECK-LABEL: define hidden swiftcc void @"$S9ctypes_ir9testColoryyF"
+// CHECK-LABEL: define hidden swiftcc void @"$s9ctypes_ir9testColoryyF"
 func testColor() {
   // CHECK: store i32 1
   var c : Color = green
 }
 
-// CHECK-LABEL: define hidden swiftcc void @"$S9ctypes_ir12testAnonEnumyyF"
+// CHECK-LABEL: define hidden swiftcc void @"$s9ctypes_ir12testAnonEnumyyF"
 func testAnonEnum() {
   // CHECK: store i64 30064771073
   var a = AnonConst2
 }
 
-// CHECK-LABEL: define hidden swiftcc void @"$S9ctypes_ir17testAnonEnumSmallyyF"
+// CHECK-LABEL: define hidden swiftcc void @"$s9ctypes_ir17testAnonEnumSmallyyF"
 func testAnonEnumSmall() {
   // CHECK: store i64 17
   var a = AnonConstSmall2
@@ -27,7 +27,7 @@ func testStructWithFlexibleArray(_ s : StructWithFlexibleArray) {
 }
 
 // Make sure flexible array struct member isn't represented in IR function signature as i0 (or at all). rdar://problem/18510461
-// CHECK-LABEL: define hidden swiftcc void @"$S9ctypes_ir27testStructWithFlexibleArrayyySo0defG0aF"(i32)
+// CHECK-LABEL: define hidden swiftcc void @"$s9ctypes_ir27testStructWithFlexibleArrayyySo0defG0aF"(i32)
 
 typealias EightUp = (Int8, Int8, Int8, Int8, Int8, Int8, Int8, Int8)
 

test/ClangImporter/enum-anon.swift

@@ -30,7 +30,7 @@ func testDiags() {
 #endif
 
 // CHECK-LABEL: %TSo6SR2511V = type <{ %Ts5Int32V, %Ts6UInt32V, %Ts5Int32V }>
-// CHECK-LABEL: define{{.*}} i32 @"$S4main6testIR1xs5Int32VSPySo6SR2511VG_tF"(
+// CHECK-LABEL: define{{.*}} i32 @"$s4main6testIR1xs5Int32VSPySo6SR2511VG_tF"(
 public func testIR(x: UnsafePointer<SR2511>) -> CInt {
   // CHECK: store i32 1, i32* getelementptr inbounds (%Ts6UInt32V, %Ts6UInt32V* bitcast (i32* @global to %Ts6UInt32V*), i32 0, i32 0), align 4
   global = VarConstant2

test/ClangImporter/enum.swift

@@ -228,5 +228,5 @@ let _: UnknownOptionsThanksToAPINotes = .first // expected-error {{has no member
 let _ = UnknownEnumThanksToAPINotesFirst
 let _ = UnknownOptionsThanksToAPINotesFirst
 
-// CHECK-IR: $S4enum12testMangling2e12e22e3ySo9EnumByTagV_So0gH7TypedefaSo0gH4BothVtF
+// CHECK-IR: $s4enum12testMangling2e12e22e3ySo9EnumByTagV_So0gH7TypedefaSo0gH4BothVtF
 func testMangling(e1: EnumByTag, e2: EnumByTypedef, e3: EnumByBoth) {}

test/ClangImporter/nullability_silgen.swift

@@ -9,7 +9,7 @@ import nullability
 import Foundation
 
 // null_resettable properties.
-// CHECK-LABEL: sil hidden @$S18nullability_silgen18testNullResettable{{[_0-9a-zA-Z]*}}F
+// CHECK-LABEL: sil hidden @$s18nullability_silgen18testNullResettable{{[_0-9a-zA-Z]*}}F
 func testNullResettable(_ sc: SomeClass) {
   sc.defaultedProperty = nil
   sc.defaultedProperty = "hello"