Skip to content

Respect the module ABI name when mangling for the debugger #73119

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Apr 20, 2024
Merged

Respect the module ABI name when mangling for the debugger #73119

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 3 additions & 0 deletions include/swift/Strings.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,9 @@ constexpr static const StringLiteral SWIFT_ONONE_SUPPORT = "SwiftOnoneSupport";
constexpr static const StringLiteral SWIFT_CONCURRENCY_NAME = "_Concurrency";
/// The name of the Concurrency Shims Clang module
constexpr static const StringLiteral SWIFT_CONCURRENCY_SHIMS_NAME = "_SwiftConcurrencyShims";
/// The unique ABI prefix that swift-syntax uses when it's built as part of the
/// compiler.
constexpr static const StringLiteral SWIFT_MODULE_ABI_NAME_PREFIX = "Compiler";
/// The name of the Distributed module, which supports that extension.
constexpr static const StringLiteral SWIFT_DISTRIBUTED_NAME = "Distributed";
/// The name of the StringProcessing module, which supports that extension.
Expand Down
15 changes: 12 additions & 3 deletions lib/AST/ASTMangler.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2509,10 +2509,19 @@ void ASTMangler::appendModule(const ModuleDecl *module,
// For example, if a module Foo has 'import Bar', and '-module-alias Bar=Baz'
// was passed, the name 'Baz' will be used for mangling besides loading.
StringRef ModName = module->getRealName().str();
if (RespectOriginallyDefinedIn &&
module->getABIName() != module->getName()) { // check if the ABI name is set

// If RespectOriginallyDefinedIn is not set, ignore the ABI name only for
// _Concurrency and swift-syntax (which adds "Compiler" as a prefix when
// building swift-syntax as part of the compiler).
// TODO: Mangling for the debugger should respect originally defined in, but
// as of right now there is not enough information in the mangled name to
// reconstruct AST types from mangled names when using that attribute.
if ((RespectOriginallyDefinedIn ||
(module->getName().str() != SWIFT_CONCURRENCY_NAME &&
!module->getABIName().str().starts_with(
SWIFT_MODULE_ABI_NAME_PREFIX))) &&
module->getABIName() != module->getName())
ModName = module->getABIName().str();
}

// Try the special 'swift' substitution.
if (ModName == STDLIB_NAME) {
Expand Down
13 changes: 13 additions & 0 deletions test/DebugInfo/module_abi_name.swift
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
// RUN: %target-swift-frontend -primary-file %s -emit-ir -g -module-name=Hello -module-abi-name Goodbye -emit-ir -o - | %FileCheck %s

class SomeClass {}
// CHECK: DICompositeType(tag: DW_TAG_structure_type, name: "SomeClass",{{.*}}runtimeLang: DW_LANG_Swift, identifier: "$s7Goodbye9SomeClassCD"

@available(macOS 10.13, *)
@_originallyDefinedIn(module: "ThirdModule", OSX 10.12)
class DefinedElsewhere {}
// CHECK: DICompositeType(tag: DW_TAG_structure_type, name: "DefinedElsewhere",{{.*}}runtimeLang: DW_LANG_Swift, identifier: "$s7Goodbye16DefinedElsewhereCD")

let v1 = SomeClass()
let v2 = DefinedElsewhere()