[Lldb-commits] [lldb] [llvm] [lldb][dwarf] Compute fully qualified names on simplified template names with DWARFTypePrinter (PR #112811)
Zequan Wu via lldb-commits
lldb-commits at lists.llvm.org
Fri Oct 18 10:45:25 PDT 2024
https://github.com/ZequanWu updated https://github.com/llvm/llvm-project/pull/112811
>From cee4a4f1ba6cbaa59ccd0278441f65eb26c06f96 Mon Sep 17 00:00:00 2001
From: Zequan Wu <zequanwu at google.com>
Date: Wed, 9 Oct 2024 22:35:46 -0700
Subject: [PATCH] [lldb][dwarf] Compute fully qualified names on simplified
template names with DWARFTypePrinter
---
.../SymbolFile/DWARF/DWARFASTParserClang.cpp | 21 +++++++----
.../Plugins/SymbolFile/DWARF/DWARFBaseDIE.h | 7 ++++
.../Plugins/SymbolFile/DWARF/DWARFDIE.cpp | 35 ++++++++++++++++++
.../Plugins/SymbolFile/DWARF/DWARFDIE.h | 15 ++++++++
.../SymbolFile/DWARF/DWARFFormValue.cpp | 25 +++++++++++++
.../Plugins/SymbolFile/DWARF/DWARFFormValue.h | 3 ++
.../SymbolFile/DWARF/SymbolFileDWARF.cpp | 36 +++++--------------
.../TypeSystem/Clang/TypeSystemClang.cpp | 20 -----------
.../TypeSystem/Clang/TypeSystemClang.h | 4 ---
.../DWARF/x86/simplified-template-names.cpp | 31 ++++++++++++++++
llvm/include/llvm/DebugInfo/DWARF/DWARFDie.h | 2 ++
.../llvm/DebugInfo/DWARF/DWARFTypePrinter.h | 31 ++++++++++------
llvm/lib/DebugInfo/DWARF/DWARFDie.cpp | 9 +++++
13 files changed, 170 insertions(+), 69 deletions(-)
create mode 100644 lldb/test/Shell/SymbolFile/DWARF/x86/simplified-template-names.cpp
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
index a30d898a93cc4d..fbcbbc666f9d1d 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
@@ -44,6 +44,7 @@
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/Type.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/DebugInfo/DWARF/DWARFTypePrinter.h"
#include "llvm/Demangle/Demangle.h"
#include <map>
@@ -825,11 +826,11 @@ std::string DWARFASTParserClang::GetDIEClassTemplateParams(DWARFDIE die) {
if (llvm::StringRef(die.GetName()).contains("<"))
return {};
- TypeSystemClang::TemplateParameterInfos template_param_infos;
- if (ParseTemplateParameterInfos(die, template_param_infos))
- return m_ast.PrintTemplateParams(template_param_infos);
-
- return {};
+ std::string result;
+ llvm::raw_string_ostream os(result);
+ llvm::DWARFTypePrinter<DWARFDIE> p(os);
+ p.appendAndTerminateTemplateParameters(die);
+ return result;
}
void DWARFASTParserClang::MapDeclDIEToDefDIE(
@@ -1617,9 +1618,9 @@ void DWARFASTParserClang::GetUniqueTypeNameAndDeclaration(
case DW_TAG_structure_type:
case DW_TAG_union_type: {
if (const char *class_union_struct_name = parent_decl_ctx_die.GetName()) {
- qualified_name.insert(
- 0, GetDIEClassTemplateParams(parent_decl_ctx_die));
qualified_name.insert(0, "::");
+ qualified_name.insert(0,
+ GetDIEClassTemplateParams(parent_decl_ctx_die));
qualified_name.insert(0, class_union_struct_name);
}
parent_decl_ctx_die = parent_decl_ctx_die.GetParentDeclContextDIE();
@@ -1672,6 +1673,12 @@ DWARFASTParserClang::ParseStructureLikeDIE(const SymbolContext &sc,
if (attrs.name) {
GetUniqueTypeNameAndDeclaration(die, cu_language, unique_typename,
unique_decl);
+ if (log) {
+ dwarf->GetObjectFile()->GetModule()->LogMessage(
+ log, "SymbolFileDWARF({0:p}) - {1:x16}: {2} has unique name: {3} ",
+ static_cast<void *>(this), die.GetID(), DW_TAG_value_to_name(tag),
+ unique_typename.AsCString());
+ }
if (UniqueDWARFASTType *unique_ast_entry_type =
dwarf->GetUniqueDWARFASTTypeMap().Find(
unique_typename, die, unique_decl, byte_size,
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFBaseDIE.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFBaseDIE.h
index 235343d2271223..ca25801137be38 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFBaseDIE.h
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFBaseDIE.h
@@ -24,9 +24,11 @@ class DWARFUnit;
class DWARFDebugInfoEntry;
class DWARFDeclContext;
class SymbolFileDWARF;
+class DWARFFormValue;
class DWARFBaseDIE {
public:
+ using DWARFFormValue = dwarf::DWARFFormValue;
DWARFBaseDIE() = default;
DWARFBaseDIE(DWARFUnit *cu, DWARFDebugInfoEntry *die)
@@ -46,6 +48,7 @@ class DWARFBaseDIE {
explicit operator bool() const { return IsValid(); }
bool IsValid() const { return m_cu && m_die; }
+ bool isValid() const { return IsValid(); }
bool HasChildren() const;
@@ -85,6 +88,8 @@ class DWARFBaseDIE {
// Accessing information about a DIE
dw_tag_t Tag() const;
+ dw_tag_t getTag() const { return Tag(); }
+
dw_offset_t GetOffset() const;
// Get the LLDB user ID for this DIE. This is often just the DIE offset,
@@ -95,6 +100,8 @@ class DWARFBaseDIE {
const char *GetName() const;
+ const char *getShortName() const { return GetName(); }
+
lldb::ModuleSP GetModule() const;
// Getting attribute values from the DIE.
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp
index d83740f8e2113b..3b4330c6de31d3 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp
@@ -86,6 +86,12 @@ elaborating_dies(const DWARFDIE &die) {
}
} // namespace
+std::optional<uint64_t> DWARFDIE::getLanguage() const {
+ if (IsValid())
+ return m_cu->GetDWARFLanguageType();
+ return std::nullopt;
+}
+
DWARFDIE
DWARFDIE::GetParent() const {
if (IsValid())
@@ -118,6 +124,22 @@ DWARFDIE::GetReferencedDIE(const dw_attr_t attr) const {
return {};
}
+DWARFDIE DWARFDIE::resolveReferencedType(dw_attr_t attr) const {
+ return GetReferencedDIE(attr);
+}
+
+DWARFDIE DWARFDIE::resolveReferencedType(DWARFFormValue v) const {
+ if (IsValid())
+ return v.Reference();
+ return {};
+}
+
+DWARFDIE DWARFDIE::resolveTypeUnitReference() const {
+ if (DWARFDIE reference = GetReferencedDIE(DW_AT_signature))
+ return reference;
+ return *this;
+}
+
DWARFDIE
DWARFDIE::GetDIE(dw_offset_t die_offset) const {
if (IsValid())
@@ -575,3 +597,16 @@ bool DWARFDIE::GetDIENamesAndRanges(
llvm::iterator_range<DWARFDIE::child_iterator> DWARFDIE::children() const {
return llvm::make_range(child_iterator(*this), child_iterator());
}
+
+DWARFDIE::child_iterator DWARFDIE::begin() const {
+ return child_iterator(*this);
+}
+
+DWARFDIE::child_iterator DWARFDIE::end() const { return child_iterator(); }
+
+std::optional<DWARFFormValue> DWARFDIE::find(const dw_attr_t attr) const {
+ DWARFFormValue form_value;
+ if (m_die->GetAttributeValue(m_cu, attr, form_value, nullptr, false))
+ return form_value;
+ return std::nullopt;
+}
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.h
index e1318953a384cd..273ac79e453703 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.h
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.h
@@ -44,9 +44,13 @@ class DWARFDIE : public DWARFBaseDIE {
// Functions for obtaining DIE relations and references
+ std::optional<uint64_t> getLanguage() const;
+
DWARFDIE
GetParent() const;
+ DWARFDIE getParent() const { return GetParent(); }
+
DWARFDIE
GetFirstChild() const;
@@ -56,6 +60,12 @@ class DWARFDIE : public DWARFBaseDIE {
DWARFDIE
GetReferencedDIE(const dw_attr_t attr) const;
+ DWARFDIE resolveReferencedType(dw_attr_t attr) const;
+
+ DWARFDIE resolveReferencedType(DWARFFormValue v) const;
+
+ DWARFDIE resolveTypeUnitReference() const;
+
// Get a another DIE from the same DWARF file as this DIE. This will
// check the current DIE's compile unit first to see if "die_offset" is
// in the same compile unit, and fall back to checking the DWARF file.
@@ -96,6 +106,8 @@ class DWARFDIE : public DWARFBaseDIE {
DWARFDIE
GetAttributeValueAsReferenceDIE(const dw_attr_t attr) const;
+ std::optional<DWARFFormValue> find(const dw_attr_t attr) const;
+
bool GetDIENamesAndRanges(
const char *&name, const char *&mangled, DWARFRangeList &ranges,
std::optional<int> &decl_file, std::optional<int> &decl_line,
@@ -105,6 +117,9 @@ class DWARFDIE : public DWARFBaseDIE {
/// The range of all the children of this DIE.
llvm::iterator_range<child_iterator> children() const;
+
+ child_iterator begin() const;
+ child_iterator end() const;
};
class DWARFDIE::child_iterator
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
index f58c6262349c6f..bc5d0a9555ebd4 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
@@ -569,6 +569,31 @@ uint64_t DWARFFormValue::Reference(dw_offset_t base_offset) const {
}
}
+std::optional<uint64_t> DWARFFormValue::getAsUnsignedConstant() const {
+ if ((!IsDataForm(m_form)) || m_form == lldb_private::dwarf::DW_FORM_sdata)
+ return std::nullopt;
+ return m_value.uval;
+}
+
+std::optional<int64_t> DWARFFormValue::getAsSignedConstant() const {
+ if ((!IsDataForm(m_form)) ||
+ (m_form == lldb_private::dwarf::DW_FORM_udata &&
+ uint64_t(std::numeric_limits<int64_t>::max()) < m_value.uval))
+ return std::nullopt;
+ switch (m_form) {
+ case lldb_private::dwarf::DW_FORM_data4:
+ return int32_t(m_value.uval);
+ case lldb_private::dwarf::DW_FORM_data2:
+ return int16_t(m_value.uval);
+ case lldb_private::dwarf::DW_FORM_data1:
+ return int8_t(m_value.uval);
+ case lldb_private::dwarf::DW_FORM_sdata:
+ case lldb_private::dwarf::DW_FORM_data8:
+ default:
+ return m_value.sval;
+ }
+}
+
const uint8_t *DWARFFormValue::BlockData() const { return m_value.data; }
bool DWARFFormValue::IsBlockForm(const dw_form_t form) {
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.h b/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.h
index 8ab9163e645fea..66fb6e855f29f8 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.h
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.h
@@ -58,11 +58,14 @@ class DWARFFormValue {
uint64_t Reference(dw_offset_t offset) const;
bool Boolean() const { return m_value.uval != 0; }
+ std::optional<uint64_t> getAsUnsignedConstant() const;
+ std::optional<int64_t> getAsSignedConstant() const;
uint64_t Unsigned() const { return m_value.uval; }
void SetUnsigned(uint64_t uval) { m_value.uval = uval; }
int64_t Signed() const { return m_value.sval; }
void SetSigned(int64_t sval) { m_value.sval = sval; }
const char *AsCString() const;
+ const char *getAsCString() const { return AsCString(); }
dw_addr_t Address() const;
bool IsValid() const { return m_form != 0; }
bool SkipValue(const DWARFDataExtractor &debug_info_data,
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
index 9287d4baf19e9c..9c01ca75c9cddc 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
@@ -9,6 +9,7 @@
#include "SymbolFileDWARF.h"
#include "llvm/DebugInfo/DWARF/DWARFDebugLoc.h"
+#include "llvm/DebugInfo/DWARF/DWARFTypePrinter.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/FileUtilities.h"
#include "llvm/Support/Format.h"
@@ -2821,33 +2822,14 @@ void SymbolFileDWARF::FindTypes(const TypeQuery &query, TypeResults &results) {
return true; // Keep iterating over index types, language mismatch.
}
- // Check the context matches
- std::vector<lldb_private::CompilerContext> die_context;
- if (query.GetModuleSearch())
- die_context = die.GetDeclContext();
- else
- die_context = die.GetTypeLookupContext();
- assert(!die_context.empty());
- if (!query_simple.ContextMatches(die_context))
- return true; // Keep iterating over index types, context mismatch.
-
- // Try to resolve the type.
- if (Type *matching_type = ResolveType(die, true, true)) {
- ConstString name = matching_type->GetQualifiedName();
- // We have found a type that still might not match due to template
- // parameters. If we create a new TypeQuery that uses the new type's
- // fully qualified name, we can find out if this type matches at all
- // context levels. We can't use just the "match_simple" context
- // because all template parameters were stripped off. The fully
- // qualified name of the type will have the template parameters and
- // will allow us to make sure it matches correctly.
- TypeQuery die_query(name.GetStringRef(),
- TypeQueryOptions::e_exact_match);
- if (!query.ContextMatches(die_query.GetContextRef()))
- return true; // Keep iterating over index types, context mismatch.
-
- results.InsertUnique(matching_type->shared_from_this());
- }
+ std::string name;
+ llvm::raw_string_ostream os(name);
+ llvm::DWARFTypePrinter<DWARFDIE> p(os);
+ p.appendQualifiedName(die);
+
+ if (type_basename == ConstString(name))
+ if (Type *matching_type = ResolveType(die, true, true))
+ results.InsertUnique(matching_type->shared_from_this());
return !results.Done(query); // Keep iterating if we aren't done.
});
if (results.Done(query)) {
diff --git a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
index 50115a638b9589..798535a4c390d6 100644
--- a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
+++ b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
@@ -1403,26 +1403,6 @@ static TemplateParameterList *CreateTemplateParameterList(
return template_param_list;
}
-std::string TypeSystemClang::PrintTemplateParams(
- const TemplateParameterInfos &template_param_infos) {
- llvm::SmallVector<NamedDecl *, 8> ignore;
- clang::TemplateParameterList *template_param_list =
- CreateTemplateParameterList(getASTContext(), template_param_infos,
- ignore);
- llvm::SmallVector<clang::TemplateArgument, 2> args(
- template_param_infos.GetArgs());
- if (template_param_infos.hasParameterPack()) {
- llvm::ArrayRef<TemplateArgument> pack_args =
- template_param_infos.GetParameterPackArgs();
- args.append(pack_args.begin(), pack_args.end());
- }
- std::string str;
- llvm::raw_string_ostream os(str);
- clang::printTemplateArgumentList(os, args, GetTypePrintingPolicy(),
- template_param_list);
- return str;
-}
-
clang::FunctionTemplateDecl *TypeSystemClang::CreateFunctionTemplateDecl(
clang::DeclContext *decl_ctx, OptionalClangModuleID owning_module,
clang::FunctionDecl *func_decl,
diff --git a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.h b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.h
index e39aedec7e3902..678eaed381fd49 100644
--- a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.h
+++ b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.h
@@ -1148,10 +1148,6 @@ class TypeSystemClang : public TypeSystem {
bool SetDeclIsForcefullyCompleted(const clang::TagDecl *td);
- /// Return the template parameters (including surrounding <>) in string form.
- std::string
- PrintTemplateParams(const TemplateParameterInfos &template_param_infos);
-
private:
/// Returns the PrintingPolicy used when generating the internal type names.
/// These type names are mostly used for the formatter selection.
diff --git a/lldb/test/Shell/SymbolFile/DWARF/x86/simplified-template-names.cpp b/lldb/test/Shell/SymbolFile/DWARF/x86/simplified-template-names.cpp
new file mode 100644
index 00000000000000..b1563c5b2ba443
--- /dev/null
+++ b/lldb/test/Shell/SymbolFile/DWARF/x86/simplified-template-names.cpp
@@ -0,0 +1,31 @@
+// Test lldb is able to compute the fully qualified names on templates with
+// -gsimple-template-names and -fdebug-types-section.
+
+// REQUIRES: lld
+
+// Test against logging to see if we print the fully qualified names correctly.
+// RUN: %clangxx --target=x86_64-pc-linux -g -gsimple-template-names %s -o %t
+// RUN: %lldb %t -o "log enable dwarf comp" -o "target variable v1 v2" -o exit | FileCheck %s --check-prefix=LOG
+
+// Test that we following DW_AT_signature correctly. If not, lldb might confuse the types of v1 and v2.
+// RUN: %clangxx --target=x86_64-pc-linux -g -gsimple-template-names -fdebug-types-section %s -o %t
+// RUN: %lldb %t -o "target variable v1 v2" -o exit | FileCheck %s --check-prefix=TYPE
+
+// LOG: unique name: ::t2<outer_struct1::t1<int> >
+// LOG: unique name: ::t2<outer_struct2::t1<int> >
+
+// TYPE: (t2<outer_struct1::t1<int> >) v1 = {}
+// TYPE-NEXT: (t2<outer_struct2::t1<int> >) v2 = {}
+
+struct outer_struct1 {
+ template <typename> struct t1 {};
+};
+
+struct outer_struct2 {
+ template <typename> struct t1 {};
+};
+
+template <typename> struct t2 {};
+t2<outer_struct1::t1<int>> v1;
+t2<outer_struct2::t1<int>> v2;
+int main() {}
diff --git a/llvm/include/llvm/DebugInfo/DWARF/DWARFDie.h b/llvm/include/llvm/DebugInfo/DWARF/DWARFDie.h
index 69c91835a4d9a1..2e98a4a397147b 100644
--- a/llvm/include/llvm/DebugInfo/DWARF/DWARFDie.h
+++ b/llvm/include/llvm/DebugInfo/DWARF/DWARFDie.h
@@ -226,6 +226,8 @@ class DWARFDie {
bool addressRangeContainsAddress(const uint64_t Address) const;
+ std::optional<uint64_t> getLanguage() const;
+
Expected<DWARFLocationExpressionsVector>
getLocations(dwarf::Attribute Attr) const;
diff --git a/llvm/include/llvm/DebugInfo/DWARF/DWARFTypePrinter.h b/llvm/include/llvm/DebugInfo/DWARF/DWARFTypePrinter.h
index 87e876273c4b97..b6d42f686cd266 100644
--- a/llvm/include/llvm/DebugInfo/DWARF/DWARFTypePrinter.h
+++ b/llvm/include/llvm/DebugInfo/DWARF/DWARFTypePrinter.h
@@ -11,6 +11,7 @@
#include "llvm/ADT/StringRef.h"
#include "llvm/BinaryFormat/Dwarf.h"
+#include "llvm/Support/Error.h"
#include <string>
@@ -107,13 +108,11 @@ void DWARFTypePrinter<DieType>::appendArrayType(const DieType &D) {
if (std::optional<typename DieType::DWARFFormValue> UpperV =
C.find(dwarf::DW_AT_upper_bound))
UB = UpperV->getAsUnsignedConstant();
- if (std::optional<typename DieType::DWARFFormValue> LV =
- D.getDwarfUnit()->getUnitDIE().find(dwarf::DW_AT_language))
- if (std::optional<uint64_t> LC = LV->getAsUnsignedConstant())
- if ((DefaultLB =
- LanguageLowerBound(static_cast<dwarf::SourceLanguage>(*LC))))
- if (LB && *LB == *DefaultLB)
- LB = std::nullopt;
+ if (std::optional<uint64_t> LV = D.getLanguage())
+ if ((DefaultLB =
+ LanguageLowerBound(static_cast<dwarf::SourceLanguage>(*LV))))
+ if (LB && *LB == *DefaultLB)
+ LB = std::nullopt;
if (!LB && !Count && !UB)
OS << "[]";
else if (!LB && (Count || UB) && DefaultLB)
@@ -150,6 +149,16 @@ template <typename DieType>
DieType resolveReferencedType(DieType D, typename DieType::DWARFFormValue F) {
return D.resolveReferencedType(F);
}
+template <typename DWARFFormValueType>
+const char *toString(std::optional<DWARFFormValueType> F) {
+ if (F) {
+ llvm::Expected<const char *> E = F->getAsCString();
+ if (E)
+ return *E;
+ llvm::consumeError(E.takeError());
+ }
+ return nullptr;
+}
} // namespace detail
template <typename DieType>
@@ -239,7 +248,7 @@ DieType DWARFTypePrinter<DieType>::appendUnqualifiedNameBefore(
appendConstVolatileQualifierBefore(D);
break;
case dwarf::DW_TAG_namespace: {
- if (const char *Name = dwarf::toString(D.find(dwarf::DW_AT_name), nullptr))
+ if (const char *Name = detail::toString(D.find(dwarf::DW_AT_name)))
OS << Name;
else
OS << "(anonymous namespace)";
@@ -261,7 +270,7 @@ DieType DWARFTypePrinter<DieType>::appendUnqualifiedNameBefore(
case DW_TAG_base_type:
*/
default: {
- const char *NamePtr = dwarf::toString(D.find(dwarf::DW_AT_name), nullptr);
+ const char *NamePtr = detail::toString(D.find(dwarf::DW_AT_name));
if (!NamePtr) {
appendTypeTagName(D.getTag());
return DieType();
@@ -440,7 +449,7 @@ bool DWARFTypePrinter<DieType>::appendTemplateParameters(DieType D,
if (T.getTag() == dwarf::DW_TAG_pointer_type ||
T.getTag() == dwarf::DW_TAG_reference_type)
continue;
- const char *RawName = dwarf::toString(T.find(dwarf::DW_AT_name), nullptr);
+ const char *RawName = detail::toString(T.find(dwarf::DW_AT_name));
assert(RawName);
StringRef Name = RawName;
auto V = C.find(dwarf::DW_AT_const_value);
@@ -533,7 +542,7 @@ bool DWARFTypePrinter<DieType>::appendTemplateParameters(DieType D,
}
if (C.getTag() == dwarf::DW_TAG_GNU_template_template_param) {
const char *RawName =
- dwarf::toString(C.find(dwarf::DW_AT_GNU_template_name), nullptr);
+ detail::toString(C.find(dwarf::DW_AT_GNU_template_name));
assert(RawName);
StringRef Name = RawName;
Sep();
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
index 6e7b5870dfa29f..f62526d08e54e8 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
@@ -414,6 +414,15 @@ bool DWARFDie::addressRangeContainsAddress(const uint64_t Address) const {
return false;
}
+std::optional<uint64_t> DWARFDie::getLanguage() const {
+ if (isValid()) {
+ if (std::optional<DWARFFormValue> LV =
+ U->getUnitDIE().find(dwarf::DW_AT_language))
+ return LV->getAsUnsignedConstant();
+ }
+ return std::nullopt;
+}
+
Expected<DWARFLocationExpressionsVector>
DWARFDie::getLocations(dwarf::Attribute Attr) const {
std::optional<DWARFFormValue> Location = find(Attr);
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