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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.
70 lines
4.5 KiB
Swift
70 lines
4.5 KiB
Swift
// RUN: %target-swift-frontend -enforce-exclusivity=checked -import-objc-header %S/Inputs/access_marker_verify_objc.h -Onone -emit-silgen -swift-version 4 -parse-as-library %s | %FileCheck %s
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// RUN: %target-swift-frontend -enable-verify-exclusivity -enforce-exclusivity=checked -import-objc-header %S/Inputs/access_marker_verify_objc.h -Onone -emit-sil -swift-version 4 -parse-as-library %s
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// REQUIRES: asserts
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// REQUIRES: OS=macosx
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// Test the combination of SILGen + DiagnoseStaticExclusivity with verification.
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//
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// This augments access_marker_verify with tests that require ObjC or
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// CoreFoundation.
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import Foundation
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// --- initializer `let` of CFString.
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// The verifier should ignore this.
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// CHECK-LABEL: sil private {{.*}}WZ : $@convention(c) (Builtin.RawPointer) -> () {
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// CHECK: bb0(%0 : $Builtin.RawPointer):
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// CHECK: alloc_global @$s25access_marker_verify_objc12testCFStringC8cfStringSo0F3RefavpZ
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// CHECK: [[GA:%.*]] = global_addr @$s25access_marker_verify_objc12testCFStringC8cfStringSo0F3RefavpZ : $*CFString
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// CHECK-NOT: begin_access
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// CHECK: store %{{.*}} to [init] [[GA]] : $*CFString
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// CHECK: return %{{.*}} : $()
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// CHECK-LABEL: } // end sil function '{{.*}}WZ'
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class testCFString {
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public static let cfString: CFString = "" as CFString
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}
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// --- objC method.
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// The verifier should be able to handle a thunk of a block and ignore
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// an incoming block argument.
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@objc protocol HasBlock {
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func block(_: (Int) -> Int)
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}
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class HasBlockImpl: HasBlock {
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@objc func block(_: (Int) -> Int) {}
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}
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// CHECK-LABEL: sil private [thunk] [ossa] @$s25access_marker_verify_objc12HasBlockImplC5blockyyS2iXEFTo : $@convention(objc_method) (@convention(block) @noescape (Int) -> Int, HasBlockImpl) -> () {
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// CHECK: bb0(%0 : @unowned $@convention(block) @noescape (Int) -> Int, %1 : @unowned $HasBlockImpl):
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// CHECK: [[CP:%.*]] = copy_block %0 : $@convention(block) @noescape (Int) -> Int
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// function_ref thunk for @callee_unowned @convention(block) (@unowned Int) -> (@unowned Int)
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// CHECK: [[THUNK:%.*]] = function_ref @$sS2iIyByd_S2iIegyd_TR : $@convention(thin) (Int, @guaranteed @convention(block) @noescape (Int) -> Int) -> Int
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// CHECK: [[PA:%.*]] = partial_apply [callee_guaranteed] [[THUNK]]([[CP]]) : $@convention(thin) (Int, @guaranteed @convention(block) @noescape (Int) -> Int) -> Int
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// CHECK: [[CVT:%.*]] = convert_escape_to_noescape [not_guaranteed] [[PA]] : $@callee_guaranteed (Int) -> Int to $@noescape @callee_guaranteed (Int) -> Int
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// CHECK: [[CVTB:%.*]] = begin_borrow [[CVT]]
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// CHECK: [[F:%.*]] = function_ref @$s25access_marker_verify_objc12HasBlockImplC5blockyyS2iXEF : $@convention(method) (@guaranteed @noescape @callee_guaranteed (Int) -> Int, @guaranteed HasBlockImpl) -> ()
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// CHECK: %{{.*}} = apply [[F]]([[CVTB]], %{{.*}}) : $@convention(method) (@guaranteed @noescape @callee_guaranteed (Int) -> Int, @guaranteed HasBlockImpl) -> ()
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// CHECK: return %{{.*}} : $()
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// CHECK-LABEL: } // end sil function '$s25access_marker_verify_objc12HasBlockImplC5blockyyS2iXEFTo'
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// thunk for @callee_unowned @convention(block) (@unowned Int) -> (@unowned Int)
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// CHECK-LABEL: sil shared [transparent] [serialized] [reabstraction_thunk] [ossa] @$sS2iIyByd_S2iIegyd_TR : $@convention(thin) (Int, @guaranteed @convention(block) @noescape (Int) -> Int) -> Int {
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// CHECK: bb0(%0 : $Int, %1 : @guaranteed $@convention(block) @noescape (Int) -> Int):
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// CHECK: %{{.*}} = apply %1(%0) : $@convention(block) @noescape (Int) -> Int
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// CHECK: return %{{.*}} : $Int
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// CHECK-LABEL: } // end sil function '$sS2iIyByd_S2iIegyd_TR'
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// --- C global.
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// The verifier should ignore this access.
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// CHECK-LABEL: sil hidden [ossa] @$s25access_marker_verify_objc14GlobalPropertyC14globalCFStringSo0H3RefavgZ : $@convention(method) (@thick GlobalProperty.Type) -> @owned CFString {
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// CHECK: bb0(%0 : $@thick GlobalProperty.Type):
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// CHECK: [[GA:%.*]] = global_addr @constCGlobal : $*Optional<CFString>
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// CHECK: [[STR:%.*]] = load [copy] [[GA]] : $*Optional<CFString>
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// CHECK: switch_enum [[STR]] : $Optional<CFString>, case #Optional.some!enumelt: [[SOMEBB:bb.*]], case #Optional.none!enumelt: bb{{.*}}
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// CHECK: [[SOMEBB]]([[R:%.*]] : @owned $CFString):
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// CHECK: return [[R]] : $CFString
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// CHECK-LABEL: } // end sil function '$s25access_marker_verify_objc14GlobalPropertyC14globalCFStringSo0H3RefavgZ'
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class GlobalProperty {
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public class var globalCFString: CFString { return constCGlobal }
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}
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