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adeb40f261
Removes the underscored prefixes from the @_section and @_used attributes, making them public as @section and @used respectively. The SymbolLinkageMarkers experimental feature has been removed as these attributes are now part of the standard language. Implemented expression syntactic checking rules per SE-0492. Major parts: - Renamed @_section to @section and @_used to @used - Removed the SymbolLinkageMarkers experimental feature - Added parsing support for the old underscored names with deprecation warnings - Updated all tests and examples to use the new attribute names - Added syntactic validation for @section to align with SE-0492 (reusing the legality checker by @artemcm) - Changed @DebugDescription macro to explicitly use a tuple type instead of type inferring it, to comply with the expression syntax rules - Added a testcase for the various allowed and disallowed syntactic forms, `test/ConstValues/SectionSyntactic.swift`.
51 lines
1.6 KiB
Swift
51 lines
1.6 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %{python} %utils/split_file.py -o %t %s
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// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -emit-module -o %t/MyModule.swiftmodule %t/MyModule.swift
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// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -I %t %t/Main.swift -emit-sil | %FileCheck %s --check-prefix CHECK-SIL
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// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -I %t %t/Main.swift -c -o %t/a.o
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// RUN: %target-clang %t/a.o -o %t/a.out
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// RUN: %target-run %t/a.out | %FileCheck %s
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// REQUIRES: swift_in_compiler
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// REQUIRES: executable_test
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// REQUIRES: OS=macosx
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// REQUIRES: swift_feature_Embedded
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// BEGIN MyModule.swift
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@used
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@section("__DATA,__mysection")
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let i_am_not_referenced = 42
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// BEGIN Main.swift
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import MyModule
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@_silgen_name(raw: "section$start$__DATA$__mysection")
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var mysection_start: Int
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@_silgen_name(raw: "section$end$__DATA$__mysection")
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var mysection_end: Int
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@main
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struct Main {
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static func main() {
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let start = UnsafeRawPointer(&mysection_start)
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let end = UnsafeRawPointer(&mysection_end)
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let size = end - start
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let count = size / (Int.bitWidth / 8)
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print("count: \(count)")
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let linker_set = UnsafeBufferPointer(start: start.bindMemory(to: Int.self, capacity: count), count: count)
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for i in 0 ..< linker_set.count {
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print("mysection[\(i)]: \(linker_set[i])")
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}
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}
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}
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// CHECK-SIL: // i_am_not_referenced
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// CHECK-SIL-NEXT: sil_global [serialized] [let] [used] [section "__DATA,__mysection"] @$e8MyModule19i_am_not_referencedSivp : $Int = {
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// CHECK: count: 1
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// CHECK: mysection[0]: 42
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