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// RUN: %target-swift-frontend -emit-ir %s | %FileCheck %s
//sil_stage canonical
import Builtin
import Swift
import SwiftShims
private class XXX{}
sil @XXX_dtor : $@convention(method) (@owned XXX) -> ()
sil @XXX_ctor : $@convention(method) (@owned XXX) -> @owned XXX
// CHECK: target datalayout
// No @owned or @out parameters -- function is not read only at LLVM level,
// because Swift level read only attribute is not automatically mapped
// to the LLVM read only attribute, unless IRGen can prove by analyzing
// the function body that this function is really read only.
// CHECK-NOT: ; Function Attrs:{{.*}}memory(read)
// CHECK: define{{( dllexport)?}}{{( protected)?}} swiftcc void @function_foo(
sil [readonly] @function_foo : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
%1 = tuple ()
return %1 : $()
}
// No @owned or @out parameters -- function is not read only at LLVM level,
// because Swift level read none attribute is not automatically mapped
// to the LLVM read only attribute, unless IRGen can prove by analyzing
// the function body that this function is really read only or read none.
// CHECK-NOT: ; Function Attrs:{{.*}}memory(read)
// CHECK: define{{( dllexport)?}}{{( protected)?}} swiftcc void @function_foo2(
sil [readnone] @function_foo2 : $@convention(thin) (Int) -> () {
bb0(%0 : $Int):
%1 = tuple ()
return %1 : $()
}
// There's an @owned parameter, and destructors can call arbitrary code
// -- function is not read only at LLVM level
// CHECK-NOT: ; Function Attrs:{{.*}}memory(read)
// CHECK: define{{( dllexport)?}}{{( protected)?}} swiftcc void @function_bar(
sil [readonly] @function_bar : $@convention(thin) (@owned XXX) -> () {
bb0(%0 : $XXX):
strong_release %0 : $XXX
%1 = tuple ()
return %1 : $()
}
// There's an @out parameter -- function is not read only at LLVM level
// CHECK-NOT: ; Function Attrs:{{.*}}memory(read)
// CHECK: define{{( dllexport)?}}{{( protected)?}} swiftcc void @function_baz(
sil [readonly] @function_baz : $@convention(thin) () -> (@out Any) {
bb0(%0 : $*Any):
init_existential_addr %0 : $*Any, $()
%1 = tuple ()
return %1 : $()
}
sil_vtable XXX {
#XXX.deinit!deallocator: @XXX_dtor
#XXX.init!initializer: @XXX_ctor
}
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