Merge pull request #28571 from nkcsgexi/auto-reexport

test: add backward ABI compatibility test case for moving symbols using @_originallyDefinedIn

Author: nkcsgexi

test/attr/Inputs/SymbolMove/HighLevel.swift

@@ -0,0 +1,5 @@
+@_exported import LowLevel
+
+public func printMessage() {
+  printMessageMoved()
+}

test/attr/Inputs/SymbolMove/HighlevelOriginal.swift

@@ -0,0 +1,12 @@
+public func printMessageMoved() {
+  print("Hello from HighLevel")
+}
+public func printMessage() {
+  printMessageMoved()
+}
+
+public struct Entity {
+    public let value = "HighLevel"
+    public init() {}
+    public func location() -> String { return "Entity from " + value }
+}

test/attr/Inputs/SymbolMove/LowLevel.swift

@@ -0,0 +1,11 @@
+@_originallyDefinedIn(module: "HighLevel", OSX 10.10)
+public func printMessageMoved() {
+  print("Hello from LowLevel")
+}
+
+@_originallyDefinedIn(module: "HighLevel", OSX 10.10)
+public struct Entity {
+    public let value = "LowLevel"
+    public init() {}
+    public func location() -> String { return "Entity from " + value }
+}

test/attr/attr_originally_definedin_backward_compatibility.swift

@@ -0,0 +1,51 @@
+// REQUIRES: objc_interop
+//
+// RUN: %empty-directory(%t)
+//
+// -----------------------------------------------------------------------------
+// --- Prepare SDK (.swiftmodule).
+// RUN: %empty-directory(%t/SDK)
+//
+
+// --- Build original high level framework.
+// RUN: mkdir -p %t/SDK/Frameworks/HighLevel.framework/Modules/HighLevel.swiftmodule
+// RUN: %target-build-swift-dylib(%t/SDK/Frameworks/HighLevel.framework/HighLevel) -module-name HighLevel -emit-module \
+// RUN:		-emit-module-path %t/SDK/Frameworks/HighLevel.framework/Modules/HighLevel.swiftmodule/%module-target-triple.swiftmodule \
+// RUN:     %S/Inputs/SymbolMove/HighLevelOriginal.swift -Xlinker -install_name -Xlinker @rpath/HighLevel.framework/HighLevel
+
+// --- Build an executable using the original high level framework
+// RUN: %target-build-swift -emit-executable %s -g -o %t/HighlevelRunner -F %t/SDK/Frameworks/ -framework HighLevel \
+// RUN: 	-Xlinker -rpath -Xlinker %t/SDK/Frameworks
+
+// --- Run the executable
+// RUN: %t/HighlevelRunner | %FileCheck %s -check-prefix=BEFORE_MOVE
+
+// --- Build low level framework.
+// RUN: mkdir -p %t/SDK/Frameworks/LowLevel.framework/Modules/LowLevel.swiftmodule
+// RUN: %target-build-swift-dylib(%t/SDK/Frameworks/LowLevel.framework/LowLevel) -module-name LowLevel -emit-module \
+// RUN:		-emit-module-path %t/SDK/Frameworks/LowLevel.framework/Modules/LowLevel.swiftmodule/%module-target-triple.swiftmodule \
+// RUN:     %S/Inputs/SymbolMove/LowLevel.swift -Xlinker -install_name -Xlinker @rpath/LowLevel.framework/LowLevel
+
+// --- Build high level framework.
+// RUN: mkdir -p %t/SDK/Frameworks/HighLevel.framework/Modules/HighLevel.swiftmodule
+// RUN: %target-build-swift-dylib(%t/SDK/Frameworks/HighLevel.framework/HighLevel) -module-name HighLevel -emit-module \
+// RUN:		-emit-module-path %t/SDK/Frameworks/HighLevel.framework/Modules/HighLevel.swiftmodule/%module-target-triple.swiftmodule \
+// RUN:     %S/Inputs/SymbolMove/HighLevel.swift -F %t/SDK/Frameworks -Xlinker -reexport_framework -Xlinker LowLevel
+
+// --- Run the executable
+// RUN: %t/HighlevelRunner | %FileCheck %s -check-prefix=AFTER_MOVE
+
+import HighLevel
+
+printMessage()
+printMessageMoved()
+
+// BEFORE_MOVE: Hello from HighLevel
+// BEFORE_MOVE: Hello from HighLevel
+// AFTER_MOVE: Hello from LowLevel
+// AFTER_MOVE: Hello from LowLevel
+
+let e = Entity()
+print(e.location())
+// BEFORE_MOVE: Entity from HighLevel
+// AFTER_MOVE: Entity from LowLevel