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354fd29f31
This is a hidden option. It should be used like: -assume-single-threaded When this function is provided, the compiler assumes that the code will be executed in the single threaded mode. It then performs certain optimizations that can benefit from it, e.g. it marks as non-atomic all reference counting instructions in the user code being compiled.
52 lines
1.2 KiB
Plaintext
52 lines
1.2 KiB
Plaintext
// RUN: %target-swift-frontend -emit-sil -assume-parsing-unqualified-ownership-sil %s -assume-single-threaded | %FileCheck %s
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// RUN: %target-swift-frontend -emit-sil -assume-parsing-unqualified-ownership-sil %s -O -assume-single-threaded | %FileCheck %s
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// Check that all reference counting instructions are converted to [nonatomic]
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// if -assume-single-threaded is used.
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sil_stage canonical
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import Builtin
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import Swift
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import SwiftShims
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public class C {
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deinit
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init()
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}
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// CHECK-LABEL: sil{{.*}}@test_atomic_to_nonatomic_retain
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// CHECK: strong_retain [nonatomic]
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// CHECK: return
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sil @test_atomic_to_nonatomic_retain: $@convention(thin) () -> @owned C {
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bb0:
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%1 = alloc_ref $C
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strong_retain %1 : $C
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return %1 : $C
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}
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// CHECK-LABEL: sil{{.*}}@test_atomic_to_nonatomic_release
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// CHECK: strong_release [nonatomic]
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// CHECK: return
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sil @test_atomic_to_nonatomic_release: $@convention(thin) (C) -> C {
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bb0(%0 : $C):
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strong_release %0 : $C
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return %0 : $C
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}
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// C.__deallocating_deinit
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sil @_TFC28nonatomic_reference_counting1CD : $@convention(method) (@owned C) -> () {
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bb0(%0 : $C):
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dealloc_ref %0 : $C
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%4 = tuple ()
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return %4 : $()
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}
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sil_vtable C {
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#C.deinit!deallocator: _TFC28nonatomic_reference_counting1CD // C.__deallocating_deinit
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}
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