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1753906140
Now that Xcode has been updated on builders (https://github.com/apple/swift/issues/69485), these tests should pass.
80 lines
2.6 KiB
Swift
80 lines
2.6 KiB
Swift
// Tests that under -enable-llvm-vfe + -internalize-at-link, cross-module
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// virtual calls are done via thunks and LLVM GlobalDCE is able to remove unused
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// virtual methods from a library based on a list of used symbols by a client.
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// RUN: %empty-directory(%t)
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// (1) Build library swiftmodule
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// RUN: %target-build-swift -parse-as-library -Xfrontend -enable-llvm-vfe \
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// RUN: %s -DLIBRARY -module-name Library \
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// RUN: -emit-module -o %t/Library.swiftmodule \
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// RUN: -emit-tbd -emit-tbd-path %t/libLibrary.tbd -Xfrontend -tbd-install_name=%t/libLibrary.dylib
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// (2) Build client
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// RUN: %target-build-swift -parse-as-library -Xfrontend -enable-llvm-vfe \
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// RUN: %s -DCLIENT -module-name Main -I%t -L%t -lLibrary -o %t/main
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// (3) Extract a list of used symbols by client from library
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// RUN: %llvm-nm --undefined-only -m %t/main | grep 'from libLibrary' | awk '{print $3}' > %t/used-symbols
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// (4) Now produce the .dylib with just the symbols needed by the client
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// RUN: %target-build-swift -parse-as-library -Xfrontend -enable-llvm-vfe -Xfrontend -internalize-at-link \
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// RUN: %s -DLIBRARY -lto=llvm-full %lto_flags -module-name Library \
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// RUN: -emit-library -o %t/libLibrary.dylib -runtime-compatibility-version none \
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// RUN: -Xlinker -exported_symbols_list -Xlinker %t/used-symbols -Xlinker -dead_strip
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// (5) Check list of symbols in library
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// RUN: %llvm-nm --defined-only %t/libLibrary.dylib | %FileCheck %s --check-prefix=NM
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// (6) Execution test
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// RUN: %target-run %t/main | %FileCheck %s
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// REQUIRES: executable_test
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// FIXME(mracek): More work needed to get this to work on non-Apple platforms.
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// REQUIRES: VENDOR=apple
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// For LTO, the linker dlopen()'s the libLTO library, which is a scenario that
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// ASan cannot work in ("Interceptors are not working, AddressSanitizer is
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// loaded too late").
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// REQUIRES: no_asan
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// Remote test execution does not support dynamically loaded libraries.
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// UNSUPPORTED: remote_run
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#if LIBRARY
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public class MyClass {
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public init() {}
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public func foo() { print("MyClass.foo") }
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public func bar() { print("MyClass.bar") }
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}
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public class MyDerivedClass: MyClass {
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override public func foo() { print("MyDerivedClass.foo") }
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override public func bar() { print("MyDerivedClass.bar") }
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}
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// NM-NOT: $s7Library14MyDerivedClassC3baryyF
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// NM: $s7Library14MyDerivedClassC3fooyyF
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// NM-NOT: $s7Library7MyClassC3baryyF
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// NM: $s7Library7MyClassC3fooyyF
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#endif
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#if CLIENT
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import Library
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@_cdecl("main")
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func main() -> Int32 {
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let o: MyClass = MyDerivedClass()
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o.foo()
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print("Done")
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// CHECK: MyDerivedClass.foo
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// CHECK-NEXT: Done
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return 0
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}
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#endif
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