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6a020f8f15
The main point of this change is to make sure that a shared function always has a body: both, in the optimizer pipeline and in the swiftmodule file. This is important because the compiler always needs to emit code for a shared function. Shared functions cannot be referenced from outside the module. In several corner cases we missed to maintain this invariant which resulted in unresolved-symbol linker errors. As side-effect of this change we can drop the shared_external SIL linkage and the IsSerializable flag, which simplifies the serialization and linkage concept.
41 lines
1.8 KiB
Plaintext
41 lines
1.8 KiB
Plaintext
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend %S/Inputs/shared_function_serialization_input.swift -o %t/Swift.swiftmodule -emit-module -parse-as-library -parse-stdlib -module-link-name swiftCore -module-name Swift -O -enable-ossa-modules
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// RUN: %target-sil-opt -enable-sil-verify-all -I %t -performance-linker -enable-ossa-modules -inline %s -o - | %FileCheck %s
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// CHECK: sil private @top_level_code
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// CHECK: sil public_external [serialized] [ossa] @$ss1XVABycfC{{.*}}
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// CHECK: sil public_external [serialized] [ossa] @$ss17the_thing_it_does1xys1XV_tF{{.*}}
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// CHECK: sil shared [serialized] [noinline] [ossa] @$ss9the_thing1tyx_tlFs1XV_Tgq5{{.*}}
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sil_stage canonical
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import Builtin
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import Swift
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sil_global @x : $X
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// top_level_code
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sil private @top_level_code : $@convention(thin) () -> () {
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bb0:
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%0 = global_addr @x : $*X // users: %4, %6
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// function_ref Swift.X.init (Swift.X.Type)() -> Swift.X
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%1 = function_ref @$ss1XVABycfC : $@convention(method) (@thin X.Type) -> X // user: %3
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%2 = metatype $@thin X.Type // user: %3
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%3 = apply %1(%2) : $@convention(method) (@thin X.Type) -> X // user: %4
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store %3 to %0 : $*X // id: %4
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// function_ref Swift.the_thing_it_does (x : Swift.X) -> ()
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%5 = function_ref @$ss17the_thing_it_does1xys1XV_tF : $@convention(thin) (X) -> () // user: %7
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%6 = load %0 : $*X // user: %7
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%7 = apply %5(%6) : $@convention(thin) (X) -> ()
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%8 = tuple () // user: %9
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return %8 : $() // id: %9
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}
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// Swift.X.init (Swift.X.Type)() -> Swift.X
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sil @$ss1XVABycfC : $@convention(method) (@thin X.Type) -> X
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// Swift.the_thing_it_does (x : Swift.X) -> ()
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sil @$ss17the_thing_it_does1xys1XV_tF : $@convention(thin) (X) -> ()
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