File: fixed_layout_attribute.swift

package info (click to toggle)
swiftlang 6.1.3-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,532 kB
  • sloc: cpp: 9,901,743; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (72 lines) | stat: -rw-r--r-- 2,729 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
// RUN: %target-swift-emit-silgen -parse-as-library %s | %FileCheck %s --check-prefix=FRAGILE --check-prefix=CHECK
// RUN: %target-swift-emit-silgen -enable-library-evolution -parse-as-library %s | %FileCheck %s --check-prefix=RESILIENT --check-prefix=CHECK

// RUN: %target-swift-emit-silgen -parse-as-library -enable-testing %s
// RUN: %target-swift-emit-silgen -parse-as-library -enable-testing -enable-library-evolution %s

public let global = 0

struct InternalStruct {
  var storedProperty = global
}

// CHECK-LABEL: sil hidden [transparent] [ossa] @$s22fixed_layout_attribute14InternalStructV14storedPropertySivpfi : $@convention(thin) () -> Int
//
//    ... okay to directly reference the addressor here:
// CHECK: function_ref @$s22fixed_layout_attribute6globalSivau
// CHECK: return

public struct NonFixedStruct {
  public var storedProperty = global
}

// FRAGILE-LABEL: sil [transparent] [ossa] @$s22fixed_layout_attribute14NonFixedStructV14storedPropertySivpfi : $@convention(thin) () -> Int
// RESILIENT-LABEL: sil hidden [transparent] [ossa] @$s22fixed_layout_attribute14NonFixedStructV14storedPropertySivpfi : $@convention(thin) () -> Int
//
//    ... okay to directly reference the addressor here:
// CHECK: function_ref @$s22fixed_layout_attribute6globalSivau
// CHECK: return

@frozen
public struct FixedStruct {
  public var storedProperty = global
}

// CHECK-LABEL: sil non_abi [transparent] [serialized] [ossa] @$s22fixed_layout_attribute11FixedStructV14storedPropertySivpfi : $@convention(thin) () -> Int
//
//    ... a fragile build can still reference the addressor:
// FRAGILE: function_ref @$s22fixed_layout_attribute6globalSivau

//    ... a resilient build has to use the getter because the addressor
//    is not public, and the initializer is serialized:
// RESILIENT: function_ref @$s22fixed_layout_attribute6globalSivg

// CHECK: return

// This would crash with -enable-testing
private let privateGlobal = 0

struct AnotherInternalStruct {
  var storedProperty = privateGlobal
}

// Static properties in fixed-layout type is still resilient

@frozen
public struct HasStaticProperty {
  public static var staticProperty: Int = 0
}

// CHECK-LABEL: sil [ossa] @$s22fixed_layout_attribute18usesStaticPropertyyyF : $@convention(thin) () -> ()
// CHECK: function_ref @$s22fixed_layout_attribute17HasStaticPropertyV06staticF0Sivau : $@convention(thin) () -> Builtin.RawPointer
// CHECK: return
public func usesStaticProperty() {
  _ = HasStaticProperty.staticProperty
}

// CHECK-LABEL: sil [serialized] [ossa] @$s22fixed_layout_attribute27usesStaticPropertyInlinableyyF : $@convention(thin) () -> ()

@inlinable
public func usesStaticPropertyInlinable() {
  _ = HasStaticProperty.staticProperty
}