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Merge pull request #85074 from kubamracek/section

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SE-0492: Stabilize @_section/@_used into @section/@used
This commit is contained in:
Kuba (Brecka) Mracek
2025-10-24 12:29:48 -07:00
committed by GitHub
parent bafd04d647 ca737d3d97
commit eb23d3bc0a
62 changed files with 816 additions and 401 deletions
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7
test/embedded/linkage-mergeable-dead-strip.swift
View File

@@ -1,7 +1,7 @@
// RUN: %empty-directory(%t)
// RUN: %target-swift-frontend -enable-experimental-feature Embedded -enable-experimental-feature SymbolLinkageMarkers -module-name main -O %s -emit-ir | %FileCheck %s --check-prefix=CHECK-IR
// RUN: %target-swift-frontend -enable-experimental-feature Embedded -enable-experimental-feature SymbolLinkageMarkers -module-name main -O %s -c -o %t/a.o
// RUN: %target-swift-frontend -enable-experimental-feature Embedded -module-name main -O %s -emit-ir | %FileCheck %s --check-prefix=CHECK-IR
// RUN: %target-swift-frontend -enable-experimental-feature Embedded -module-name main -O %s -c -o %t/a.o
// RUN: %target-clang %target-clang-resource-dir-opt %t/a.o -o %t/a.out -dead_strip
// RUN: %llvm-nm --defined-only --format=just-symbols --demangle %t/a.out | sort | %FileCheck %s --check-prefix=CHECK-NM
// RUN: %target-run %t/a.out | %FileCheck %s
@@ -9,11 +9,10 @@
// REQUIRES: swift_in_compiler
// REQUIRES: executable_test
// REQUIRES: swift_feature_Embedded
// REQUIRES: swift_feature_SymbolLinkageMarkers
public func a_this_is_unused() { }
@_used
@used
public func b_this_is_unused_but_explicitly_retained() { }
// CHECK-IR: define {{.*}}@"$e4main16a_this_is_unusedyyF"()

13
test/embedded/linkage/c.swift
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@@ -6,9 +6,8 @@
// REQUIRES: swift_feature_DeferredCodeGen
// REQUIRES: swift_feature_CDecl
// REQUIRES: swift_feature_CImplementation
// REQUIRES: swift_feature_SymbolLinkageMarkers
// RUN: %target-swift-frontend -emit-ir -o - %s -I %S/Inputs -package-name MyPackage -enable-experimental-feature Embedded -enable-experimental-feature DeferredCodeGen -enable-experimental-feature CDecl -enable-experimental-feature CImplementation -enable-experimental-feature SymbolLinkageMarkers -parse-as-library | %FileCheck %s
// RUN: %target-swift-frontend -emit-ir -o - %s -I %S/Inputs -package-name MyPackage -enable-experimental-feature Embedded -enable-experimental-feature DeferredCodeGen -enable-experimental-feature CDecl -enable-experimental-feature CImplementation -parse-as-library | %FileCheck %s
import MyModuleExports
@@ -61,21 +60,21 @@ internal func clib_func3() -> Double { 0 }
internal func clib_func4() -> Double { 0 }
// ---------------------------------------------------------------------------
// @_section causes symbol emission
// @section causes symbol emission
// ---------------------------------------------------------------------------
// CHECK: define {{(protected |dllexport )?}}swiftcc void @"$e1c15symbolInSectionyyF"
@_section("__TEXT,__mysection")
@section("__TEXT,__mysection")
public func symbolInSection() { }
// CHECK: define hidden swiftcc void @"$e1c23internalSymbolInSectionyyF"
@_section("__TEXT,__mysection")
@section("__TEXT,__mysection")
func internalSymbolInSection() { }
// ---------------------------------------------------------------------------
// @_used causes symbol emission
// @used causes symbol emission
// ---------------------------------------------------------------------------
// CHECK: define hidden swiftcc void @"$e1c10usedSymbolyyF"
@_used
@used
func usedSymbol() { }

11
test/embedded/modules-used.swift
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@@ -1,9 +1,9 @@
// RUN: %empty-directory(%t)
// RUN: %{python} %utils/split_file.py -o %t %s
// RUN: %target-swift-frontend -enable-experimental-feature SymbolLinkageMarkers -enable-experimental-feature Embedded -parse-as-library -emit-module -o %t/MyModule.swiftmodule %t/MyModule.swift
// RUN: %target-swift-frontend -enable-experimental-feature SymbolLinkageMarkers -enable-experimental-feature Embedded -parse-as-library -I %t %t/Main.swift -emit-sil | %FileCheck %s --check-prefix CHECK-SIL
// RUN: %target-swift-frontend -enable-experimental-feature SymbolLinkageMarkers -enable-experimental-feature Embedded -parse-as-library -I %t %t/Main.swift -c -o %t/a.o
// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -emit-module -o %t/MyModule.swiftmodule %t/MyModule.swift
// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -I %t %t/Main.swift -emit-sil | %FileCheck %s --check-prefix CHECK-SIL
// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -I %t %t/Main.swift -c -o %t/a.o
// RUN: %target-clang %t/a.o -o %t/a.out
// RUN: %target-run %t/a.out | %FileCheck %s
@@ -11,12 +11,11 @@
// REQUIRES: executable_test
// REQUIRES: OS=macosx
// REQUIRES: swift_feature_Embedded
// REQUIRES: swift_feature_SymbolLinkageMarkers
// BEGIN MyModule.swift
@_used
@_section("__DATA,__mysection")
@used
@section("__DATA,__mysection")
let i_am_not_referenced = 42
// BEGIN Main.swift

11
test/embedded/modules-used2.swift
View File

@@ -1,27 +1,26 @@
// RUN: %empty-directory(%t)
// RUN: %{python} %utils/split_file.py -o %t %s
// RUN: %target-swift-frontend -enable-experimental-feature SymbolLinkageMarkers -enable-experimental-feature Embedded -parse-as-library -emit-module -o %t/MyModule.swiftmodule %t/MyModule.swift
// RUN: %target-swift-frontend -enable-experimental-feature SymbolLinkageMarkers -enable-experimental-feature Embedded -parse-as-library -I %t %t/Main.swift -emit-sil | %FileCheck %s --check-prefix CHECK-SIL
// RUN: %target-swift-frontend -enable-experimental-feature SymbolLinkageMarkers -enable-experimental-feature Embedded -parse-as-library -I %t %t/Main.swift -c -o %t/a.o
// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -emit-module -o %t/MyModule.swiftmodule %t/MyModule.swift
// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -I %t %t/Main.swift -emit-sil | %FileCheck %s --check-prefix CHECK-SIL
// RUN: %target-swift-frontend -enable-experimental-feature Embedded -parse-as-library -I %t %t/Main.swift -c -o %t/a.o
// RUN: %target-clang %target-clang-resource-dir-opt %t/a.o -o %t/a.out
// RUN: %target-run %t/a.out | %FileCheck %s
// REQUIRES: swift_in_compiler
// REQUIRES: executable_test
// REQUIRES: swift_feature_Embedded
// REQUIRES: swift_feature_SymbolLinkageMarkers
// BEGIN MyModule.swift
@_used
@used
@_cdecl("main")
func main() -> CInt {
print("main in a submodule")
return 0
}
@_used
@used
func foo() {
}