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3dde9df468
The reason why I am doing this is that this was not part of the original evolution proposal (it was called an extension) and after some discussion it was realized that partial consumption would benefit from discussion on the forums. rdar://111353459
310 lines
11 KiB
Swift
310 lines
11 KiB
Swift
// RUN: %target-run-simple-swift(-Xfrontend -sil-verify-all -enable-experimental-feature MoveOnlyPartialConsumption) | %FileCheck %s
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// RUN: %target-run-simple-swift(-O -Xfrontend -sil-verify-all -enable-experimental-feature MoveOnlyPartialConsumption) | %FileCheck %s
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// REQUIRES: executable_test
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struct S : ~Copyable {
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let s: String
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init(_ s: String) { self.s = s }
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deinit {
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print("destroying \(s)")
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}
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}
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struct S2 : ~Copyable {
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var s1: S
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var s2: S
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init(_ s: String) {
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self.s1 = S("\(s).s1")
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self.s2 = S("\(s).s2")
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}
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}
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struct S3 : ~Copyable {
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var s1: S
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var s2: S
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var s3: S
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init(_ s: String) {
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self.s1 = S("\(s).s1")
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self.s2 = S("\(s).s2")
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self.s3 = S("\(s).s3")
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}
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}
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func consumeVal(_ s: consuming S) {}
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func consumeVal(_ s: consuming S2) {}
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func borrowVal(_ s: borrowing S) {}
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func borrowVal(_ s: borrowing S2) {}
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func marker(_ s: String) {
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print("\(#function): \(s)")
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}
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// Simple test that makes sure that we still after we consume have the lifetime
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// of s be completely consumed by consumeVal.
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// CHECK: destroying simpleTestVar().first.s1
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// CHECK: destroying simpleTestVar().first.s2
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// CHECK: destroying simpleTestVar().second.s1
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// CHECK: destroying simpleTestVar().second.s2
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// CHECK: marker(_:): simpleTestVar().1
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@_silgen_name("simpleTestVar")
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func simpleTestVar() {
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var s = S2("\(#function).first")
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s = S2("\(#function).second")
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consumeVal(s) // Lifetime of s should end here before end of scope.
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marker("\(#function).1")
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}
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// Simple test that proves that we can maximize lifetimes in a field sensitive
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// manner. Since we only consume s.s1, s.s2's lifetime should still be maximized
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// and be at end of scope.
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// CHECK: destroying simpleTestVar2().first.s1
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// CHECK: destroying simpleTestVar2().first.s2
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// CHECK: destroying simpleTestVar2().second.s1
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// CHECK: marker(_:): simpleTestVar2().1
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// CHECK: destroying simpleTestVar2().second.s2
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func simpleTestVar2() {
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var s = S2("\(#function).first")
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s = S2("\(#function).second")
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consumeVal(s.s1) // Lifetime of s1 should end here.
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marker("\(#function).1")
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// Lifetime of s2 should end at end of scope after marker.
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}
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// In this case, we consume all of s by consuming s.s1 and s.s2 separately, so
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// all lifetimes should be done before marker.
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// CHECK: destroying simpleTestVar3().first.s1
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// CHECK: destroying simpleTestVar3().first.s2
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// CHECK: destroying simpleTestVar3().second.s1
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// CHECK: destroying simpleTestVar3().second.s2
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// CHECK: marker(_:): simpleTestVar3().1
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func simpleTestVar3() {
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var s = S2("\(#function).first")
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s = S2("\(#function).second")
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consumeVal(s.s1)
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consumeVal(s.s2)
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marker("\(#function).1") // Lifetimes should end before marker.
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}
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// In this case, we completely consume s and then reinitialize s implying we
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// need to deal with two disjoint lifetimes. The second lifetime of s should end
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// after marker.
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// CHECK: destroying simpleTestVar3a().first.s1
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// CHECK: destroying simpleTestVar3a().first.s2
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// CHECK: destroying simpleTestVar3a().second.s1
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// CHECK: destroying simpleTestVar3a().second.s2
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// CHECK: marker(_:): simpleTestVar3a().1
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// CHECK: marker(_:): simpleTestVar3a().2
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// CHECK: destroying simpleTestVar3a().third.s1
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// CHECK: destroying simpleTestVar3a().third.s2
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func simpleTestVar3a() {
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var s = S2("\(#function).first")
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s = S2("\(#function).second")
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consumeVal(s.s1)
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consumeVal(s.s2)
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marker("\(#function).1")
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s = S2("\(#function).third")
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marker("\(#function).2")
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}
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// In this case, we have another borrowVal of s.s2. That should still let s.s2's
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// lifetime end after marker.
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// CHECK: destroying simpleTestVar3b().first.s1
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// CHECK: destroying simpleTestVar3b().first.s2
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// CHECK: destroying simpleTestVar3b().second.s1
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// CHECK: marker(_:): simpleTestVar3b().1
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// CHECK: destroying simpleTestVar3b().second.s2
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func simpleTestVar3b() {
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var s = S2("\(#function).first")
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s = S2("\(#function).second")
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consumeVal(s.s1)
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borrowVal(s.s2)
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marker("\(#function).1") // s2 should end its lifetime after marker.
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}
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// In this case, we are testing reinitialization and making sure that we can
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// handle two initializations properly. We also are testing conditional merge
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// logic. Since in both cases below s is completely consumed in b, s's lifetime
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// would end at marker.
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// CHECK: destroying simpleTestVar4(_:_:)[false, false)].first.s1
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// CHECK: destroying simpleTestVar4(_:_:)[false, false)].first.s2
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// CHECK: marker(_:): simpleTestVar4(_:_:)[false, false)].1
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// CHECK: destroying simpleTestVar4(_:_:)[false, false)].second.s1
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// CHECK: destroying simpleTestVar4(_:_:)[false, false)].second.s2
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// CHECK: destroying simpleTestVar4(_:_:)[false, false)].third.s1
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// CHECK: destroying simpleTestVar4(_:_:)[false, false)].third.s2
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// CHECK: marker(_:): simpleTestVar4(_:_:)[false, false)].2
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// CHECK: destroying simpleTestVar4(_:_:)[false, true)].first.s1
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// CHECK: destroying simpleTestVar4(_:_:)[false, true)].first.s2
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// CHECK: marker(_:): simpleTestVar4(_:_:)[false, true)].1
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// CHECK: destroying simpleTestVar4(_:_:)[false, true)].second.s1
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// CHECK: destroying simpleTestVar4(_:_:)[false, true)].second.s2
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// CHECK: destroying simpleTestVar4(_:_:)[false, true)].third.s1
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// CHECK: destroying simpleTestVar4(_:_:)[false, true)].third.s2
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// CHECK: destroying simpleTestVar4(_:_:)[true, false)].first.s1
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// CHECK: destroying simpleTestVar4(_:_:)[true, false)].first.s2
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// CHECK: destroying simpleTestVar4(_:_:)[true, false)].second.s1
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// CHECK: destroying simpleTestVar4(_:_:)[true, false)].second.s2
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// CHECK: destroying simpleTestVar4(_:_:)[true, false)].third.s1
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// CHECK: destroying simpleTestVar4(_:_:)[true, false)].third.s2
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// CHECK: marker(_:): simpleTestVar4(_:_:)[true, false)].2
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// CHECK: destroying simpleTestVar4(_:_:)[true, true)].first.s1
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// CHECK: destroying simpleTestVar4(_:_:)[true, true)].first.s2
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// CHECK: destroying simpleTestVar4(_:_:)[true, true)].second.s1
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// CHECK: destroying simpleTestVar4(_:_:)[true, true)].second.s2
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// CHECK: destroying simpleTestVar4(_:_:)[true, true)].third.s1
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// CHECK: destroying simpleTestVar4(_:_:)[true, true)].third.s2
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func simpleTestVar4(_ b1: Bool, _ b2: Bool) {
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var s = S2("\(#function)[\(b1), \(b2))].first")
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s = S2("\(#function)[\(b1), \(b2))].second")
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if b1 {
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consumeVal(s)
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} else {
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marker("\(#function)[\(b1), \(b2))].1")
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// S's lifetime should end after marker in this block.
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}
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s = S2("\(#function)[\(b1), \(b2))].third")
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if b2 {
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consumeVal(s)
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} else {
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marker("\(#function)[\(b1), \(b2))].2")
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// S's 2nd lifetime should end after marker in this block.
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}
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}
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// This test is similar to the previous, except we are consuming different
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// values along the if/else branch that completely covers the value. As a result
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// of this, we need to end the lifetime of s in the branches.
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// CHECK: destroying simpleTestVar6(_:)[false].first.s1
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// CHECK: destroying simpleTestVar6(_:)[false].first.s2
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// CHECK: destroying simpleTestVar6(_:)[false].second.s2
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// CHECK: marker(_:): simpleTestVar6(_:)[false].2
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// CHECK: destroying simpleTestVar6(_:)[false].second.s1
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// CHECK: destroying simpleTestVar6(_:)[false].third.s1
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// CHECK: destroying simpleTestVar6(_:)[false].third.s2
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// CHECK: destroying simpleTestVar6(_:)[true].first.s1
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// CHECK: destroying simpleTestVar6(_:)[true].first.s2
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// CHECK: destroying simpleTestVar6(_:)[true].second.s1
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// CHECK: marker(_:): simpleTestVar6(_:)[true].1
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// CHECK: destroying simpleTestVar6(_:)[true].second.s2
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// CHECK: destroying simpleTestVar6(_:)[true].third.s1
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// CHECK: destroying simpleTestVar6(_:)[true].third.s2
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func simpleTestVar6(_ b: Bool) {
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var s = S2("\(#function)[\(b)].first")
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s = S2("\(#function)[\(b)].second")
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if b {
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consumeVal(s.s1) // end of s.s1's lifetime.
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marker("\(#function)[\(b)].1")
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// s.s2 should end here.
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} else {
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consumeVal(s.s2) // end of s.s2's lifetime
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marker("\(#function)[\(b)].2")
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// end of s.s1's lifetime should end after marker.
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}
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s = S2("\(#function)[\(b)].third")
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}
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// In this case, we are using S3 implying we have three fields. So despite the
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// fact that we are deleting these two values in the if-else branches, s3's
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// lifetime needs to end at end of scope.
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// CHECK: destroying simpleTestVar6a(_:)[false].first.s1
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// CHECK: destroying simpleTestVar6a(_:)[false].first.s2
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// CHECK: destroying simpleTestVar6a(_:)[false].first.s3
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// CHECK: destroying simpleTestVar6a(_:)[false].second.s2
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// CHECK: marker(_:): simpleTestVar6a(_:)[false].2
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// CHECK: destroying simpleTestVar6a(_:)[false].second.s1
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// CHECK: marker(_:): simpleTestVar6a(_:)[false].3
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// CHECK: destroying simpleTestVar6a(_:)[false].second.s3
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// CHECK: destroying simpleTestVar6a(_:)[true].first.s1
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// CHECK: destroying simpleTestVar6a(_:)[true].first.s2
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// CHECK: destroying simpleTestVar6a(_:)[true].first.s3
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// CHECK: destroying simpleTestVar6a(_:)[true].second.s1
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// CHECK: marker(_:): simpleTestVar6a(_:)[true].1
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// CHECK: destroying simpleTestVar6a(_:)[true].second.s2
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// CHECK: marker(_:): simpleTestVar6a(_:)[true].3
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// CHECK: destroying simpleTestVar6a(_:)[true].second.s3
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func simpleTestVar6a(_ b: Bool) {
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var s = S3("\(#function)[\(b)].first")
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s = S3("\(#function)[\(b)].second")
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if b {
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consumeVal(s.s1) // end of s.s1's lifetime.
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marker("\(#function)[\(b)].1")
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// s.s2 should end here.
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} else {
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consumeVal(s.s2) // end of s.s2's lifetime
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marker("\(#function)[\(b)].2")
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// end of s.s1's lifetime should end after marker.
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}
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marker("\(#function)[\(b)].3")
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// s.s3's lifetime should end here.
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}
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// In this case, we are using S3, but we are consuming two disjoint parts of S
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// in the if statement so we cover again completely.
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// CHECK: destroying simpleTestVar6b(_:)[false].first.s1
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// CHECK: destroying simpleTestVar6b(_:)[false].first.s2
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// CHECK: destroying simpleTestVar6b(_:)[false].first.s3
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// CHECK: destroying simpleTestVar6b(_:)[false].second.s2
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// CHECK: marker(_:): simpleTestVar6b(_:)[false].2
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// CHECK: destroying simpleTestVar6b(_:)[false].second.s3
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// CHECK: destroying simpleTestVar6b(_:)[false].second.s1
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// CHECK: marker(_:): simpleTestVar6b(_:)[false].3
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// CHECK: destroying simpleTestVar6b(_:)[true].first.s1
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// CHECK: destroying simpleTestVar6b(_:)[true].first.s2
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// CHECK: destroying simpleTestVar6b(_:)[true].first.s3
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// CHECK: destroying simpleTestVar6b(_:)[true].second.s1
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// CHECK: destroying simpleTestVar6b(_:)[true].second.s3
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// CHECK: marker(_:): simpleTestVar6b(_:)[true].1
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// CHECK: destroying simpleTestVar6b(_:)[true].second.s2
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// CHECK: marker(_:): simpleTestVar6b(_:)[true].3
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func simpleTestVar6b(_ b: Bool) {
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var s = S3("\(#function)[\(b)].first")
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s = S3("\(#function)[\(b)].second")
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if b {
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consumeVal(s.s1) // end of s.s1's lifetime.
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consumeVal(s.s3) // end of s.s3's lifetime
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marker("\(#function)[\(b)].1")
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// s.s2 should end here.
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} else {
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consumeVal(s.s2) // end of s.s2's lifetime
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marker("\(#function)[\(b)].2")
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// end of s.s1's lifetime should end after marker.
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// end of s.s3's lifetime should end after marker.
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}
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marker("\(#function)[\(b)].3")
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}
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simpleTestVar()
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simpleTestVar2()
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simpleTestVar3()
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simpleTestVar3a()
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simpleTestVar3b()
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simpleTestVar4(false, false)
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simpleTestVar4(false, true)
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simpleTestVar4(true, false)
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simpleTestVar4(true, true)
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simpleTestVar6(false)
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simpleTestVar6(true)
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simpleTestVar6a(false)
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simpleTestVar6a(true)
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simpleTestVar6b(false)
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simpleTestVar6b(true)
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