[clang] [llvm] [clang][DebugInfo] Emit DW_AT_language_name for DWARFv6 (PR #163208)
Michael Buch via cfe-commits
cfe-commits at lists.llvm.org
Wed Oct 15 08:17:27 PDT 2025
https://github.com/Michael137 updated https://github.com/llvm/llvm-project/pull/163208
>From 8e29980ab1af05245ad24762bc5a05e41d7ffcb7 Mon Sep 17 00:00:00 2001
From: Michael Buch <michaelbuch12 at gmail.com>
Date: Tue, 7 Oct 2025 11:56:22 +0100
Subject: [PATCH 1/2] [llvm][DebugInfo] [llvm][DebugInfo] Add
'sourceLanguageVersion' field support to DICompileUnit
(cherry picked from commit 2a2bd988b47e8772312c22681f97bbf528898f88)
---
llvm/lib/AsmParser/LLParser.cpp | 8 +++++-
llvm/lib/Bitcode/Reader/MetadataLoader.cpp | 6 +++--
llvm/lib/Bitcode/Writer/BitcodeWriter.cpp | 1 +
llvm/lib/IR/AsmWriter.cpp | 11 +++++---
.../dicompileunit-invalid-language-version.ll | 25 +++++++++++++++++++
.../Bitcode/dwarf-source-language-version.ll | 17 +++++++++++++
6 files changed, 62 insertions(+), 6 deletions(-)
create mode 100644 llvm/test/Assembler/dicompileunit-invalid-language-version.ll
create mode 100644 llvm/test/Bitcode/dwarf-source-language-version.ll
diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index 7a3cd83cdd887..cf6328580fd21 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -5876,6 +5876,7 @@ bool LLParser::parseDICompileUnit(MDNode *&Result, bool IsDistinct) {
REQUIRED(file, MDField, (/* AllowNull */ false)); \
OPTIONAL(language, DwarfLangField, ); \
OPTIONAL(sourceLanguageName, DwarfSourceLangNameField, ); \
+ OPTIONAL(sourceLanguageVersion, MDUnsignedField, (0, UINT32_MAX)); \
OPTIONAL(producer, MDStringField, ); \
OPTIONAL(isOptimized, MDBoolField, ); \
OPTIONAL(flags, MDStringField, ); \
@@ -5905,10 +5906,15 @@ bool LLParser::parseDICompileUnit(MDNode *&Result, bool IsDistinct) {
return error(Loc, "can only specify one of 'language' and "
"'sourceLanguageName' on !DICompileUnit");
+ if (sourceLanguageVersion.Seen && !sourceLanguageName.Seen)
+ return error(Loc, "'sourceLanguageVersion' requires an associated "
+ "'sourceLanguageName' on !DICompileUnit");
+
Result = DICompileUnit::getDistinct(
Context,
language.Seen ? DISourceLanguageName(language.Val)
- : DISourceLanguageName(sourceLanguageName.Val, 0),
+ : DISourceLanguageName(sourceLanguageName.Val,
+ sourceLanguageVersion.Val),
file.Val, producer.Val, isOptimized.Val, flags.Val, runtimeVersion.Val,
splitDebugFilename.Val, emissionKind.Val, enums.Val, retainedTypes.Val,
globals.Val, imports.Val, macros.Val, dwoId.Val, splitDebugInlining.Val,
diff --git a/llvm/lib/Bitcode/Reader/MetadataLoader.cpp b/llvm/lib/Bitcode/Reader/MetadataLoader.cpp
index cdcf7a80ffac7..ed0443f599a44 100644
--- a/llvm/lib/Bitcode/Reader/MetadataLoader.cpp
+++ b/llvm/lib/Bitcode/Reader/MetadataLoader.cpp
@@ -1860,7 +1860,7 @@ Error MetadataLoader::MetadataLoaderImpl::parseOneMetadata(
break;
}
case bitc::METADATA_COMPILE_UNIT: {
- if (Record.size() < 14 || Record.size() > 22)
+ if (Record.size() < 14 || Record.size() > 23)
return error("Invalid record");
// Ignore Record[0], which indicates whether this compile unit is
@@ -1869,11 +1869,13 @@ Error MetadataLoader::MetadataLoaderImpl::parseOneMetadata(
const auto LangVersionMask = (uint64_t(1) << 63);
const bool HasVersionedLanguage = Record[1] & LangVersionMask;
+ const uint32_t LanguageVersion = Record.size() > 22 ? Record[22] : 0;
auto *CU = DICompileUnit::getDistinct(
Context,
HasVersionedLanguage
- ? DISourceLanguageName(Record[1] & ~LangVersionMask, 0)
+ ? DISourceLanguageName(Record[1] & ~LangVersionMask,
+ LanguageVersion)
: DISourceLanguageName(Record[1]),
getMDOrNull(Record[2]), getMDString(Record[3]), Record[4],
getMDString(Record[5]), Record[6], getMDString(Record[7]), Record[8],
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
index 54e916e2dcfe1..8ff3aa9817571 100644
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -2142,6 +2142,7 @@ void ModuleBitcodeWriter::writeDICompileUnit(const DICompileUnit *N,
Record.push_back(N->getRangesBaseAddress());
Record.push_back(VE.getMetadataOrNullID(N->getRawSysRoot()));
Record.push_back(VE.getMetadataOrNullID(N->getRawSDK()));
+ Record.push_back(Lang.hasVersionedName() ? Lang.getVersion() : 0);
Stream.EmitRecord(bitc::METADATA_COMPILE_UNIT, Record, Abbrev);
Record.clear();
diff --git a/llvm/lib/IR/AsmWriter.cpp b/llvm/lib/IR/AsmWriter.cpp
index 2430d988ddb04..3908a78f48412 100644
--- a/llvm/lib/IR/AsmWriter.cpp
+++ b/llvm/lib/IR/AsmWriter.cpp
@@ -2374,16 +2374,21 @@ static void writeDICompileUnit(raw_ostream &Out, const DICompileUnit *N,
Out << "!DICompileUnit(";
MDFieldPrinter Printer(Out, WriterCtx);
- auto Lang = N->getSourceLanguage();
- if (Lang.hasVersionedName())
+ DISourceLanguageName Lang = N->getSourceLanguage();
+
+ if (Lang.hasVersionedName()) {
Printer.printDwarfEnum(
"sourceLanguageName",
static_cast<llvm::dwarf::SourceLanguageName>(Lang.getName()),
dwarf::SourceLanguageNameString,
/* ShouldSkipZero */ false);
- else
+
+ Printer.printInt("sourceLanguageVersion", Lang.getVersion(),
+ /*ShouldSkipZero=*/true);
+ } else {
Printer.printDwarfEnum("language", Lang.getName(), dwarf::LanguageString,
/* ShouldSkipZero */ false);
+ }
Printer.printMetadata("file", N->getRawFile(), /* ShouldSkipNull */ false);
Printer.printString("producer", N->getProducer());
diff --git a/llvm/test/Assembler/dicompileunit-invalid-language-version.ll b/llvm/test/Assembler/dicompileunit-invalid-language-version.ll
new file mode 100644
index 0000000000000..b3794ac749f60
--- /dev/null
+++ b/llvm/test/Assembler/dicompileunit-invalid-language-version.ll
@@ -0,0 +1,25 @@
+; RUN: split-file %s %t
+; RUN: not llvm-as < %t/dw_lang_with_version.ll -disable-output 2>&1 | FileCheck %s --check-prefix=WRONG-ATTR
+; RUN: not llvm-as < %t/overflow.ll -disable-output 2>&1 | FileCheck %s --check-prefix=OVERFLOW
+; RUN: not llvm-as < %t/version_without_name.ll -disable-output 2>&1 | FileCheck %s --check-prefix=NO-NAME
+; RUN: not llvm-as < %t/negative.ll -disable-output 2>&1 | FileCheck %s --check-prefix=NEGATIVE
+
+; WRONG-ATTR: error: 'sourceLanguageVersion' requires an associated 'sourceLanguageName' on !DICompileUnit
+; OVERFLOW: error: value for 'sourceLanguageVersion' too large, limit is 4294967295
+; NEGATIVE: error: expected unsigned integer
+; NO-NAME: error: missing one of 'language' or 'sourceLanguageName', required for !DICompileUnit
+
+;--- dw_lang_with_version.ll
+!0 = distinct !DICompileUnit(language: DW_LANG_C, sourceLanguageVersion: 1,
+ file: !DIFile(filename: "", directory: ""))
+
+;--- overflow.ll
+!0 = distinct !DICompileUnit(sourceLanguageName: DW_LNAME_C, sourceLanguageVersion: 4294967298)
+
+;--- negative.ll
+!0 = distinct !DICompileUnit(sourceLanguageName: DW_LNAME_C, sourceLanguageVersion: -1,
+ file: !DIFile(filename: "", directory: ""))
+
+;--- version_without_name.ll
+!0 = distinct !DICompileUnit(sourceLanguageVersion: 1,
+ file: !DIFile(filename: "", directory: ""))
diff --git a/llvm/test/Bitcode/dwarf-source-language-version.ll b/llvm/test/Bitcode/dwarf-source-language-version.ll
new file mode 100644
index 0000000000000..311afd5a99afe
--- /dev/null
+++ b/llvm/test/Bitcode/dwarf-source-language-version.ll
@@ -0,0 +1,17 @@
+; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s --implicit-check-not "sourceLanguageVersion: 0"
+
+; CHECK: sourceLanguageVersion: 120
+
+source_filename = "cu.cpp"
+target triple = "arm64-apple-macosx"
+
+!llvm.dbg.cu = !{!0, !5}
+!llvm.module.flags = !{!3, !4}
+
+!0 = distinct !DICompileUnit(sourceLanguageName: DW_LNAME_ObjC_plus_plus, sourceLanguageVersion: 120, file: !1, producer: "handwritten", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !2, splitDebugInlining: false, nameTableKind: Apple, sysroot: "/")
+!1 = !DIFile(filename: "cu.cpp", directory: "/tmp")
+!2 = !{}
+!3 = !{i32 7, !"Dwarf Version", i32 5}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!5 = distinct !DICompileUnit(sourceLanguageName: DW_LNAME_ObjC_plus_plus, sourceLanguageVersion: 0, file: !6, producer: "handwritten", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !2, splitDebugInlining: false, nameTableKind: Apple, sysroot: "/")
+!6 = !DIFile(filename: "cu2.cpp", directory: "/tmp")
>From 3fe4f0fb6ae39e4b3a00d5018b00eadd95086f1c Mon Sep 17 00:00:00 2001
From: Michael Buch <michaelbuch12 at gmail.com>
Date: Tue, 7 Oct 2025 09:52:19 +0100
Subject: [PATCH 2/2] [clang][DebugInfo] Emit DW_AT_language_name for DWARFv6
---
clang/lib/CodeGen/CGDebugInfo.cpp | 134 ++++++++++++++----
.../test/DebugInfo/CXX/versioned-language.cpp | 24 ++++
.../DebugInfo/Generic/versioned-language.c | 17 +++
.../test/DebugInfo/ObjC/versioned-language.m | 9 ++
.../DebugInfo/ObjCXX/versioned-language.mm | 9 ++
5 files changed, 163 insertions(+), 30 deletions(-)
create mode 100644 clang/test/DebugInfo/CXX/versioned-language.cpp
create mode 100644 clang/test/DebugInfo/Generic/versioned-language.c
create mode 100644 clang/test/DebugInfo/ObjC/versioned-language.m
create mode 100644 clang/test/DebugInfo/ObjCXX/versioned-language.mm
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index 9fe9a13610296..79079ccb216cd 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -41,8 +41,10 @@
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Instructions.h"
@@ -647,6 +649,77 @@ StringRef CGDebugInfo::getCurrentDirname() {
return CGM.getCodeGenOpts().DebugCompilationDir;
}
+static llvm::dwarf::SourceLanguage GetSourceLanguage(const CodeGenModule &CGM) {
+ const CodeGenOptions &CGO = CGM.getCodeGenOpts();
+ const LangOptions &LO = CGM.getLangOpts();
+
+ assert(CGO.DwarfVersion <= 5);
+
+ llvm::dwarf::SourceLanguage LangTag;
+ if (LO.CPlusPlus) {
+ if (LO.ObjC)
+ LangTag = llvm::dwarf::DW_LANG_ObjC_plus_plus;
+ else if (CGO.DebugStrictDwarf && CGO.DwarfVersion < 5)
+ LangTag = llvm::dwarf::DW_LANG_C_plus_plus;
+ else if (LO.CPlusPlus14)
+ LangTag = llvm::dwarf::DW_LANG_C_plus_plus_14;
+ else if (LO.CPlusPlus11)
+ LangTag = llvm::dwarf::DW_LANG_C_plus_plus_11;
+ else
+ LangTag = llvm::dwarf::DW_LANG_C_plus_plus;
+ } else if (LO.ObjC) {
+ LangTag = llvm::dwarf::DW_LANG_ObjC;
+ } else if (LO.OpenCL && (!CGO.DebugStrictDwarf || CGO.DwarfVersion >= 5)) {
+ LangTag = llvm::dwarf::DW_LANG_OpenCL;
+ } else if (LO.C11 && !(CGO.DebugStrictDwarf && CGO.DwarfVersion < 5)) {
+ LangTag = llvm::dwarf::DW_LANG_C11;
+ } else if (LO.C99) {
+ LangTag = llvm::dwarf::DW_LANG_C99;
+ } else {
+ LangTag = llvm::dwarf::DW_LANG_C89;
+ }
+
+ return LangTag;
+}
+
+static std::pair<llvm::dwarf::SourceLanguageName, uint32_t>
+GetSourceLanguageName(const CodeGenModule &CGM) {
+ const CodeGenOptions &CGO = CGM.getCodeGenOpts();
+ const LangOptions &LO = CGM.getLangOpts();
+
+ assert(CGO.DwarfVersion >= 6);
+
+ uint32_t LangVersion = 0;
+ llvm::dwarf::SourceLanguageName LangTag;
+ if (LO.CPlusPlus) {
+ if (LO.ObjC) {
+ LangTag = llvm::dwarf::DW_LNAME_ObjC_plus_plus;
+ } else {
+ LangTag = llvm::dwarf::DW_LNAME_C_plus_plus;
+ LangVersion = LO.getCPlusPlusLangStd().value_or(0);
+ }
+ } else if (LO.ObjC) {
+ LangTag = llvm::dwarf::DW_LNAME_ObjC;
+ } else if (LO.OpenCL) {
+ LangTag = llvm::dwarf::DW_LNAME_OpenCL_C;
+ } else {
+ LangTag = llvm::dwarf::DW_LNAME_C;
+ LangVersion = LO.getCLangStd().value_or(0);
+ }
+
+ return {LangTag, LangVersion};
+}
+
+static llvm::DISourceLanguageName
+GetDISourceLanguageName(const CodeGenModule &CGM) {
+ // Emit pre-DWARFv6 language codes.
+ if (CGM.getCodeGenOpts().DwarfVersion < 6)
+ return llvm::DISourceLanguageName(GetSourceLanguage(CGM));
+
+ auto [LName, LVersion] = GetSourceLanguageName(CGM);
+ return llvm::DISourceLanguageName(LName, LVersion);
+}
+
void CGDebugInfo::CreateCompileUnit() {
SmallString<64> Checksum;
std::optional<llvm::DIFile::ChecksumKind> CSKind;
@@ -702,31 +775,6 @@ void CGDebugInfo::CreateCompileUnit() {
}
}
- llvm::dwarf::SourceLanguage LangTag;
- if (LO.CPlusPlus) {
- if (LO.ObjC)
- LangTag = llvm::dwarf::DW_LANG_ObjC_plus_plus;
- else if (CGO.DebugStrictDwarf && CGO.DwarfVersion < 5)
- LangTag = llvm::dwarf::DW_LANG_C_plus_plus;
- else if (LO.CPlusPlus14)
- LangTag = llvm::dwarf::DW_LANG_C_plus_plus_14;
- else if (LO.CPlusPlus11)
- LangTag = llvm::dwarf::DW_LANG_C_plus_plus_11;
- else
- LangTag = llvm::dwarf::DW_LANG_C_plus_plus;
- } else if (LO.ObjC) {
- LangTag = llvm::dwarf::DW_LANG_ObjC;
- } else if (LO.OpenCL && (!CGM.getCodeGenOpts().DebugStrictDwarf ||
- CGM.getCodeGenOpts().DwarfVersion >= 5)) {
- LangTag = llvm::dwarf::DW_LANG_OpenCL;
- } else if (LO.C11 && !(CGO.DebugStrictDwarf && CGO.DwarfVersion < 5)) {
- LangTag = llvm::dwarf::DW_LANG_C11;
- } else if (LO.C99) {
- LangTag = llvm::dwarf::DW_LANG_C99;
- } else {
- LangTag = llvm::dwarf::DW_LANG_C89;
- }
-
std::string Producer = getClangFullVersion();
// Figure out which version of the ObjC runtime we have.
@@ -787,7 +835,7 @@ void CGDebugInfo::CreateCompileUnit() {
// Create new compile unit.
TheCU = DBuilder.createCompileUnit(
- llvm::DISourceLanguageName(LangTag), CUFile,
+ GetDISourceLanguageName(CGM), CUFile,
CGOpts.EmitVersionIdentMetadata ? Producer : "",
CGOpts.OptimizationLevel != 0 || CGOpts.PrepareForLTO ||
CGOpts.PrepareForThinLTO,
@@ -1234,20 +1282,46 @@ llvm::DIType *CGDebugInfo::CreateType(const PointerType *Ty,
Ty->getPointeeType(), Unit);
}
-/// \return whether a C++ mangling exists for the type defined by TD.
-static bool hasCXXMangling(const TagDecl *TD, llvm::DICompileUnit *TheCU) {
- switch (TheCU->getSourceLanguage().getUnversionedName()) {
+static bool hasCXXMangling(llvm::dwarf::SourceLanguage Lang, bool IsTagDecl) {
+ switch (Lang) {
case llvm::dwarf::DW_LANG_C_plus_plus:
case llvm::dwarf::DW_LANG_C_plus_plus_11:
case llvm::dwarf::DW_LANG_C_plus_plus_14:
return true;
case llvm::dwarf::DW_LANG_ObjC_plus_plus:
- return isa<CXXRecordDecl>(TD) || isa<EnumDecl>(TD);
+ return IsTagDecl;
default:
return false;
}
}
+static bool hasCXXMangling(llvm::dwarf::SourceLanguageName Lang,
+ bool IsTagDecl) {
+ switch (Lang) {
+ case llvm::dwarf::DW_LNAME_C_plus_plus:
+ return true;
+ case llvm::dwarf::DW_LNAME_ObjC_plus_plus:
+ return IsTagDecl;
+ default:
+ return false;
+ }
+}
+
+/// \return whether a C++ mangling exists for the type defined by TD.
+static bool hasCXXMangling(const TagDecl *TD, llvm::DICompileUnit *TheCU) {
+ const bool IsTagDecl = isa<CXXRecordDecl>(TD) || isa<EnumDecl>(TD);
+
+ if (llvm::DISourceLanguageName SourceLang = TheCU->getSourceLanguage();
+ SourceLang.hasVersionedName())
+ return hasCXXMangling(
+ static_cast<llvm::dwarf::SourceLanguageName>(SourceLang.getName()),
+ IsTagDecl);
+ else
+ return hasCXXMangling(
+ static_cast<llvm::dwarf::SourceLanguage>(SourceLang.getName()),
+ IsTagDecl);
+}
+
// Determines if the debug info for this tag declaration needs a type
// identifier. The purpose of the unique identifier is to deduplicate type
// information for identical types across TUs. Because of the C++ one definition
diff --git a/clang/test/DebugInfo/CXX/versioned-language.cpp b/clang/test/DebugInfo/CXX/versioned-language.cpp
new file mode 100644
index 0000000000000..54e32342f414a
--- /dev/null
+++ b/clang/test/DebugInfo/CXX/versioned-language.cpp
@@ -0,0 +1,24 @@
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=5 -std=c++98 \
+// RUN: | FileCheck %s --implicit-check-not "sourceLanguageName" --implicit-check-not "sourceLanguageVersion"
+//
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c++98 | FileCheck %s --check-prefix=CHECK-CPP98 --implicit-check-not "sourceLanguageVersion"
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c++03 | FileCheck %s --check-prefix=CHECK-CPP03 --implicit-check-not "sourceLanguageVersion"
+//
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c++11 | FileCheck %s --check-prefix=CHECK-CPP11
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c++14 | FileCheck %s --check-prefix=CHECK-CPP14
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c++17 | FileCheck %s --check-prefix=CHECK-CPP17
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c++20 | FileCheck %s --check-prefix=CHECK-CPP20
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c++23 | FileCheck %s --check-prefix=CHECK-CPP23
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c++2c | FileCheck %s --check-prefix=CHECK-CPP2C
+
+int globalVar = 10;
+
+// CHECK-CPP98: !DICompileUnit(sourceLanguageName: DW_LNAME_C_plus_plus, sourceLanguageVersion: 199711
+// FIXME: C++03 technically has no official standard version code. From Clang's point of view C++03 and C++98 are interchangable.
+// CHECK-CPP03: !DICompileUnit(sourceLanguageName: DW_LNAME_C_plus_plus, sourceLanguageVersion: 199711
+// CHECK-CPP11: !DICompileUnit(sourceLanguageName: DW_LNAME_C_plus_plus, sourceLanguageVersion: 201103
+// CHECK-CPP14: !DICompileUnit(sourceLanguageName: DW_LNAME_C_plus_plus, sourceLanguageVersion: 201402
+// CHECK-CPP17: !DICompileUnit(sourceLanguageName: DW_LNAME_C_plus_plus, sourceLanguageVersion: 201703
+// CHECK-CPP20: !DICompileUnit(sourceLanguageName: DW_LNAME_C_plus_plus, sourceLanguageVersion: 202002
+// CHECK-CPP23: !DICompileUnit(sourceLanguageName: DW_LNAME_C_plus_plus, sourceLanguageVersion: 202302
+// CHECK-CPP2C: !DICompileUnit(sourceLanguageName: DW_LNAME_C_plus_plus, sourceLanguageVersion: 202400
diff --git a/clang/test/DebugInfo/Generic/versioned-language.c b/clang/test/DebugInfo/Generic/versioned-language.c
new file mode 100644
index 0000000000000..1faa7b4b56d4e
--- /dev/null
+++ b/clang/test/DebugInfo/Generic/versioned-language.c
@@ -0,0 +1,17 @@
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=5 -std=c99 \
+// RUN: | FileCheck %s --implicit-check-not "sourceLanguageName" --implicit-check-not "sourceLanguageVersion"
+//
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c89 | FileCheck %s --check-prefix=CHECK-C89 --implicit-check-not "sourceLanguageVersion"
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c99 | FileCheck %s --check-prefix=CHECK-C99
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c17 | FileCheck %s --check-prefix=CHECK-C17
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c23 | FileCheck %s --check-prefix=CHECK-C23
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 -std=c2y | FileCheck %s --check-prefix=CHECK-C2Y
+
+int globalVar = 10;
+
+// CHECK-C89: !DICompileUnit(sourceLanguageName: DW_LNAME_C,
+// CHECK-C99: !DICompileUnit(sourceLanguageName: DW_LNAME_C, sourceLanguageVersion: 199901
+// CHECK-C11: !DICompileUnit(sourceLanguageName: DW_LNAME_C, sourceLanguageVersion: 201112
+// CHECK-C17: !DICompileUnit(sourceLanguageName: DW_LNAME_C, sourceLanguageVersion: 201710
+// CHECK-C23: !DICompileUnit(sourceLanguageName: DW_LNAME_C, sourceLanguageVersion: 202311
+// CHECK-C2Y: !DICompileUnit(sourceLanguageName: DW_LNAME_C, sourceLanguageVersion: 202400
diff --git a/clang/test/DebugInfo/ObjC/versioned-language.m b/clang/test/DebugInfo/ObjC/versioned-language.m
new file mode 100644
index 0000000000000..178c47bf8c841
--- /dev/null
+++ b/clang/test/DebugInfo/ObjC/versioned-language.m
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=5 \
+// RUN: | FileCheck %s --implicit-check-not "sourceLanguageName" --implicit-check-not "sourceLanguageVersion"
+//
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 \
+// RUN: | FileCheck %s --implicit-check-not "sourceLanguageVersion" --check-prefix=CHECK-OBJC
+
+int globalVar = 10;
+
+// CHECK-OBJC: !DICompileUnit(sourceLanguageName: DW_LNAME_ObjC,
diff --git a/clang/test/DebugInfo/ObjCXX/versioned-language.mm b/clang/test/DebugInfo/ObjCXX/versioned-language.mm
new file mode 100644
index 0000000000000..bfdce462b2bf1
--- /dev/null
+++ b/clang/test/DebugInfo/ObjCXX/versioned-language.mm
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=5 \
+// RUN: | FileCheck %s --implicit-check-not "sourceLanguageName" --implicit-check-not "sourceLanguageVersion"
+//
+// RUN: %clang_cc1 -emit-llvm %s -o - -debug-info-kind=limited -dwarf-version=6 \
+// RUN: | FileCheck %s --implicit-check-not "sourceLanguageVersion" --check-prefix=CHECK-OBJCXX
+
+int globalVar = 10;
+
+// CHECK-OBJCXX: !DICompileUnit(sourceLanguageName: DW_LNAME_ObjC_plus_plus,
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