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69e4b95fb8
Although nonescaping closures are representationally trivial pointers to their on-stack context, it is useful to model them as borrowing their captures, which allows for checking correct use of move-only values across the closure, and lets us model the lifetime dependence between a closure and its captures without an ad-hoc web of `mark_dependence` instructions. During ownership elimination, We eliminate copy/destroy_value instructions and end the partial_apply's lifetime with an explicit dealloc_stack as before, for compatibility with existing IRGen and non-OSSA aware passes.
37 lines
2.7 KiB
Swift
37 lines
2.7 KiB
Swift
// RUN: %target-swift-frontend -emit-silgen %s -enable-experimental-concurrency -disable-availability-checking | %FileCheck %s
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// REQUIRES: concurrency
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// CHECK-LABEL: sil hidden [ossa] @$s7reasync0A8FunctionyyyyYaXEYaF : $@convention(thin) @async (@guaranteed @noescape @async @callee_guaranteed () -> ()) -> () {
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func reasyncFunction(_ a: () async -> ()) reasync {
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await a()
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}
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// CHECK-LABEL: sil hidden [ossa] @$s7reasync10syncCalleryyyyXEF : $@convention(thin) (@guaranteed @noescape @callee_guaranteed () -> ()) -> () {
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// CHECK: [[ARGC:%.*]] = copy_value %0
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// CHECK: [[THUNK_FN:%.*]] = function_ref @$sIg_IegH_TR : $@convention(thin) @async (@guaranteed @noescape @callee_guaranteed () -> ()) -> ()
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// CHECK: [[THUNK:%.*]] = partial_apply [callee_guaranteed] [[THUNK_FN]]([[ARGC]]) : $@convention(thin) @async (@guaranteed @noescape @callee_guaranteed () -> ()) -> ()
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// CHECK: [[NOESCAPE:%.*]] = convert_escape_to_noescape [not_guaranteed] [[THUNK]] : $@async @callee_guaranteed () -> () to $@noescape @async @callee_guaranteed () -> ()
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// CHECK: [[FN:%.*]] = function_ref @$s7reasync0A8FunctionyyyyYaXEYaF : $@convention(thin) @async (@guaranteed @noescape @async @callee_guaranteed () -> ()) -> ()
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// CHECK: apply [noasync] [[FN]]([[NOESCAPE]]) : $@convention(thin) @async (@guaranteed @noescape @async @callee_guaranteed () -> ()) -> ()
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func syncCaller(_ fn: () -> ()) {
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reasyncFunction(fn)
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}
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func asyncCaller(_ fn: () async -> ()) async {
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// CHECK: [[FN:%.*]] = function_ref @$s7reasync0A8FunctionyyyyYaXEYaF : $@convention(thin) @async (@guaranteed @noescape @async @callee_guaranteed () -> ()) -> ()
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// CHECK: apply [[FN]](%0) : $@convention(thin) @async (@guaranteed @noescape @async @callee_guaranteed () -> ()) -> ()
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await reasyncFunction(fn)
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}
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// CHECK-LABEL: sil hidden [ossa] @$s7reasync23throwingReasyncFunctionyyyyYaKXEYaKF : $@convention(thin) @async (@guaranteed @noescape @async @callee_guaranteed () -> @error any Error) -> @error any Error {
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func throwingReasyncFunction(_ a: () async throws -> ()) reasync throws {
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try await a()
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}
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// CHECK-LABEL: sil hidden [ossa] @$s7reasync18throwingSyncCalleryyyyXEKF : $@convention(thin) (@guaranteed @noescape @callee_guaranteed () -> ()) -> @error any Error {
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// CHECK: [[FN:%.*]] = function_ref @$s7reasync23throwingReasyncFunctionyyyyYaKXEYaKF : $@convention(thin) @async (@guaranteed @noescape @async @callee_guaranteed () -> @error any Error) -> @error any Error
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// CHECK: try_apply [noasync] [[FN]]({{.*}}) : $@convention(thin) @async (@guaranteed @noescape @async @callee_guaranteed () -> @error any Error) -> @error any Error, normal bb1, error bb2
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func throwingSyncCaller(_ fn: () -> ()) throws {
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try throwingReasyncFunction(fn)
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}
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