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When Embedded Swift emits a symbol that was imported from another module, ensure that the symbol is emitted as a weak definition. This way, importing the same module (and using its symbol) into several different modules doesn't cause duplicate-symbol errors at link time. Rather, the linker will merge the different symbol definitions. This makes Embedded Swift libraries work without resorting to `-mergeable-symbols` or `-emit-empty-object-file`.
23 lines
672 B
Swift
23 lines
672 B
Swift
// RUN: %target-swift-emit-sil %s -parse-stdlib -O | %FileCheck %s
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// RUN: %target-swift-emit-sil %s -parse-stdlib -O -enable-experimental-feature Embedded | %FileCheck %s --check-prefix EMBEDDED
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// REQUIRES: swift_in_compiler
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// REQUIRES: swift_feature_Embedded
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struct X {}
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struct MyStruct<T> {
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@_optimize(none)
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public func foo() {}
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}
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public func test() {
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MyStruct<X>().foo()
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}
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// CHECK: MyStruct.foo()
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// CHECK: sil hidden [Onone] @$s4main8MyStructV3fooyyF : $@convention(method) <T> (MyStruct<T>) -> () {
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// EMBEDDED: // specialized MyStruct.foo()
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// EMBEDDED: sil shared [Onone] @$e4main8MyStructV3fooyyFAA1XV_Tg5 : $@convention(method) (MyStruct<X>) -> () {
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