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020b69d4b6
Implement the @export(implementation) and @export(interface) attributes to replace @_alwaysEmitIntoClient and @_neverEmitIntoClient. Provide a warning + Fix-It to start staging out the very-new @_neverEmitIntoClient. We'll hold off on pushing folks toward @_alwaysEmitIntoClient for a little longer.
33 lines
1.7 KiB
Swift
33 lines
1.7 KiB
Swift
// RUN: %target-swift-frontend -emit-ir %s -O | %FileCheck %s --check-prefix=OPTIMIZED
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// RUN: %target-swift-frontend -emit-ir %s | %FileCheck %s
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// RUN: %target-swift-frontend -emit-ir %s | %FileCheck %s --check-prefix=NEGATIVE
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// RUN: %target-swift-frontend -emit-ir -primary-file %s | %FileCheck %s --check-prefix=PRIMARY
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// Make sure that @export(implementation) functions are lazily
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// emitted in WMO builds.
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// Both functions are eliminated in optimized builds; the first is inlined
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// into the caller, and the second is eliminated since it was never called.
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// OPTIMIZED-NOT: define weak_odr hidden swiftcc void @"$s20exportImplementation18referencedFunctionyyF"() {{.*}} {
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// OPTIMIZED-NOT: define weak_odr hidden swiftcc void @"$s20exportImplementation20unreferencedFunctionyyF"() {{.*}} {
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// The unreferenced function should be eliminated in an unoptimized WMO
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// build too, since it was never referenced from inside the module.
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// CHECK-LABEL: define linkonce_odr hidden swiftcc void @"$s20exportImplementation18referencedFunctionyyF"() {{.*}} {
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// NEGATIVE-NOT: define linkonce_odr hidden swiftcc void @"$s20exportImplementation20unreferencedFunctionyyF"() {{.*}} {
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// In non-WMO mode, both functions must be emitted since they could be
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// referenced from other translation units.
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// PRIMARY-LABEL: define weak_odr hidden swiftcc void @"$s20exportImplementation18referencedFunctionyyF"() {{.*}} {
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// PRIMARY-LABEL: define weak_odr hidden swiftcc void @"$s20exportImplementation20unreferencedFunctionyyF"() {{.*}} {
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@export(implementation) public func referencedFunction() {}
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@export(implementation) public func unreferencedFunction() {}
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public func referencesFunction() {
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referencedFunction()
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}
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