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This corresponds to the parameter-passing convention of the Itanium C++ ABI, in which the argument is passed indirectly and possibly modified, but not destroyed, by the callee. @in_cxx is handled the same way as @in in callers and @in_guaranteed in callees. OwnershipModelEliminator emits the call to destroy_addr that is needed to destroy the argument in the caller. rdar://122707697
35 lines
1.5 KiB
Swift
35 lines
1.5 KiB
Swift
// RUN: %target-swiftxx-frontend -I %S/Inputs -emit-silgen %s | %FileCheck --dump-input-filter=all %s
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// REQUIRES: OS=macosx
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import Closure
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// CHECK: sil [ossa] @$s4main11testARCWeakyyF : $@convention(thin) () -> () {
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// CHECK: %[[V0:.*]] = alloc_stack $ARCWeak
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// CHECK: %[[V2:.*]] = function_ref @_ZN7ARCWeakC1Ev : $@convention(c) () -> @out ARCWeak
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// CHECK: %[[V3:.*]] = apply %[[V2]](%[[V0]]) : $@convention(c) () -> @out ARCWeak
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// CHECK: %[[V4:.*]] = function_ref @_Z12cfuncARCWeak7ARCWeak : $@convention(c) (@in ARCWeak) -> ()
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// CHECK: %[[V7:.*]] = apply %[[V4]](%[[V0]]) : $@convention(c) (@in ARCWeak) -> ()
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// CHECK-NOT: destroy_addr
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// CHECK: dealloc_stack %[[V0]] : $*ARCWeak
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public func testARCWeak() {
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cfuncARCWeak(ARCWeak());
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}
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// CHECK: sil [ossa] @$s4main26testARCWeakFunctionPointeryyF : $@convention(thin) () -> () {
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// CHECK: %[[V0:.*]] = function_ref @_Z9getFnPtr2v : $@convention(c) () -> @convention(c) (@in ARCWeak) -> ()
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// CHECK: %[[V1:.*]] = apply %[[V0]]() : $@convention(c) () -> @convention(c) (@in ARCWeak) -> ()
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// CHECK: %[[V3:.*]] = alloc_stack $ARCWeak
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// CHECK: %[[V6:.*]] = function_ref @_ZN7ARCWeakC1Ev : $@convention(c) () -> @out ARCWeak
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// CHECK: apply %[[V6]](%[[V3]]) : $@convention(c) () -> @out ARCWeak
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// CHECK: apply %[[V1]](%[[V3]]) : $@convention(c) (@in ARCWeak) -> ()
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// CHECK-NEXT: dealloc_stack %[[V3]] : $*ARCWeak
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// CHECK-NEXT: %[[V9:.*]] = tuple ()
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// CHECK-NEXT: return %[[V9]] : $()
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public func testARCWeakFunctionPointer() {
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let f = getFnPtr2()
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f(ARCWeak())
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}
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