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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.
33 lines
1.9 KiB
Plaintext
33 lines
1.9 KiB
Plaintext
// RUN: %target-sil-opt %s | %FileCheck %s
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// thunk for @escaping @callee_guaranteed () -> ()
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// Check that the [without_actually_escaping] thunk attribute is parsed and printed.
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// CHECK-LABEL: sil shared [transparent] [serialized] [reabstraction_thunk] [without_actually_escaping] [ossa] @testWithoutActuallyEscapingThunk : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> () {
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sil shared [transparent] [serialized] [reabstraction_thunk] [without_actually_escaping] [ossa] @testWithoutActuallyEscapingThunk : $@convention(thin) (@guaranteed @callee_guaranteed () -> ()) -> () {
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bb0(%0 : @guaranteed $@callee_guaranteed () -> ()):
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%1 = apply %0() : $@callee_guaranteed () -> ()
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return %1 : $()
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}
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// Check that the convert_function [without_actually_escaping] attribute is parsed and printed.
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// CHECK-LABEL: sil hidden [ossa] @testWithoutActuallyEscapingBlock : $@convention(thin) (@owned @convention(block) @noescape () -> ()) -> () {
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// CHECK: convert_function %0 : $@convention(block) @noescape () -> () to [without_actually_escaping] $@convention(block) () -> ()
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sil hidden [ossa] @testWithoutActuallyEscapingBlock : $@convention(thin) (@owned @convention(block) @noescape () -> ()) -> () {
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bb0(%0 : @owned $@convention(block) @noescape () -> ()):
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%cvt = convert_function %0 : $@convention(block) @noescape () -> () to [without_actually_escaping] $@convention(block) () -> ()
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%f = function_ref @closure1 : $@convention(thin) (@guaranteed @convention(block) () -> ()) -> ()
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%call = apply %f(%cvt) : $@convention(thin) (@guaranteed @convention(block) () -> ()) -> ()
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destroy_value %cvt : $@convention(block) () -> ()
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%v = tuple ()
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return %v : $()
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}
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// closure #1 in testBlock(block:)
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sil private [ossa] @closure1 : $@convention(thin) (@guaranteed @convention(block) () -> ()) -> () {
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bb0(%0 : @guaranteed $@convention(block) () -> ()):
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%call = apply %0() : $@convention(block) () -> ()
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%v = tuple ()
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return %v : $()
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}
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