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29 lines
934 B
Swift
29 lines
934 B
Swift
// RUN: %target-swift-frontend -parse-as-library -O -module-name=test %s -emit-sil | %FileCheck %s
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// REQUIRES: optimized_stdlib,swift_stdlib_no_asserts
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// REQUIRES: swift_in_compiler
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final class Item {}
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final public class Escaper {
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var myItem: Item = Item()
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@inline(never)
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func update(items: [Item]) {
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myItem = items[0]
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}
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// CHECK-LABEL: sil [noinline] {{.*}}@$s4test7EscaperC15badStuffHappensyyF : $@convention(method) (@guaranteed Escaper) -> () {
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// CHECK: %2 = alloc_ref $Item
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// CHECK: alloc_ref{{(_dynamic)?}} [stack] [tail_elems $Item * %{{[0-9]+}} : $Builtin.Word]{{.*}} $_ContiguousArrayStorage<{{(Item|AnyObject)}}>
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// CHECK: return
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@inline(never)
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public func badStuffHappens() {
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// Check that 'item' is not stack promoted, because it escapes to myItem.
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let item = Item()
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// On the other hand, the array buffer of the array literal should be stack promoted.
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update(items:[item])
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}
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}
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