awpandey updated this revision to Diff 241391.
awpandey marked 7 inline comments as done.
awpandey added a comment.
Hi @dblaikie, I have incorporated your suggestions (renaming variables, test
case modification).
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D73462/new/
https://reviews.llvm.org/D73462
Files:
clang/lib/CodeGen/CGDebugInfo.cpp
clang/test/CodeGenCXX/debug-info-template-parameter.cpp
llvm/include/llvm/IR/DIBuilder.h
llvm/include/llvm/IR/DebugInfoMetadata.h
llvm/lib/AsmParser/LLParser.cpp
llvm/lib/Bitcode/Reader/MetadataLoader.cpp
llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
llvm/lib/IR/AsmWriter.cpp
llvm/lib/IR/DIBuilder.cpp
llvm/lib/IR/DebugInfoMetadata.cpp
llvm/lib/IR/LLVMContextImpl.h
llvm/test/DebugInfo/X86/debug-info-template-parameter.ll
llvm/unittests/IR/MetadataTest.cpp
Index: llvm/unittests/IR/MetadataTest.cpp
===================================================================
--- llvm/unittests/IR/MetadataTest.cpp
+++ llvm/unittests/IR/MetadataTest.cpp
@@ -2077,16 +2077,16 @@
StringRef Name = "template";
DIType *Type = getBasicType("basic");
- auto *N = DITemplateTypeParameter::get(Context, Name, Type);
+ auto *N = DITemplateTypeParameter::get(Context, Name, Type, false);
EXPECT_EQ(dwarf::DW_TAG_template_type_parameter, N->getTag());
EXPECT_EQ(Name, N->getName());
EXPECT_EQ(Type, N->getType());
- EXPECT_EQ(N, DITemplateTypeParameter::get(Context, Name, Type));
+ EXPECT_EQ(N, DITemplateTypeParameter::get(Context, Name, Type, false));
- EXPECT_NE(N, DITemplateTypeParameter::get(Context, "other", Type));
- EXPECT_NE(N,
- DITemplateTypeParameter::get(Context, Name, getBasicType("other")));
+ EXPECT_NE(N, DITemplateTypeParameter::get(Context, "other", Type, false));
+ EXPECT_NE(N, DITemplateTypeParameter::get(Context, Name,
+ getBasicType("other"), false));
TempDITemplateTypeParameter Temp = N->clone();
EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp)));
@@ -2100,21 +2100,23 @@
DIType *Type = getBasicType("basic");
Metadata *Value = getConstantAsMetadata();
- auto *N = DITemplateValueParameter::get(Context, Tag, Name, Type, Value);
+ auto *N =
+ DITemplateValueParameter::get(Context, Tag, Name, Type, false, Value);
EXPECT_EQ(Tag, N->getTag());
EXPECT_EQ(Name, N->getName());
EXPECT_EQ(Type, N->getType());
EXPECT_EQ(Value, N->getValue());
- EXPECT_EQ(N, DITemplateValueParameter::get(Context, Tag, Name, Type, Value));
+ EXPECT_EQ(
+ N, DITemplateValueParameter::get(Context, Tag, Name, Type, false, Value));
EXPECT_NE(N, DITemplateValueParameter::get(
Context, dwarf::DW_TAG_GNU_template_template_param, Name,
- Type, Value));
- EXPECT_NE(N,
- DITemplateValueParameter::get(Context, Tag, "other", Type, Value));
- EXPECT_NE(N, DITemplateValueParameter::get(Context, Tag, Name,
- getBasicType("other"), Value));
- EXPECT_NE(N, DITemplateValueParameter::get(Context, Tag, Name, Type,
+ Type, false, Value));
+ EXPECT_NE(N, DITemplateValueParameter::get(Context, Tag, "other", Type, false,
+ Value));
+ EXPECT_NE(N, DITemplateValueParameter::get(
+ Context, Tag, Name, getBasicType("other"), false, Value));
+ EXPECT_NE(N, DITemplateValueParameter::get(Context, Tag, Name, Type, false,
getConstantAsMetadata()));
TempDITemplateValueParameter Temp = N->clone();
Index: llvm/test/DebugInfo/X86/debug-info-template-parameter.ll
===================================================================
--- /dev/null
+++ llvm/test/DebugInfo/X86/debug-info-template-parameter.ll
@@ -0,0 +1,90 @@
+; RUN: %llc_dwarf %s -filetype=obj -o - | llvm-dwarfdump -v - | FileCheck %s
+
+; C++ source to regenerate:
+
+;template <typename T = char, int i = 3 >
+;class foo {
+;};
+;
+;int main() {
+; foo<int,6> f1;
+; foo<> f2;
+; return 0;
+;}
+
+; $ clang++ -O0 -gdwarf-5 -S -gdwarf-5 test.cpp
+
+; CHECK: .debug_abbrev contents:
+; CHECK: DW_AT_default_value DW_FORM_flag_present
+
+; CHECK: debug_info contents:
+
+; CHECK: DW_AT_name {{.*}} "foo<int, 6>"
+; CHECK: DW_AT_type {{.*}} "int"
+; CHECK-NEXT: DW_AT_name {{.*}} "T"
+; CHECK-NOT: DW_AT_default_value
+; CHECK: DW_AT_type {{.*}} "int"
+; CHECK-NEXT: DW_AT_name {{.*}} "i"
+; CHECK-NOT: DW_AT_default_value
+
+; CHECK: DW_AT_name {{.*}} "foo<char, 3>"
+; CHECK: DW_AT_type {{.*}} "char"
+; CHECK-NEXT: DW_AT_name {{.*}} "T"
+; CHECK_NEXT: DW_AT_default_value {{.*}} true
+; CHECK: DW_AT_type {{.*}} "int"
+; CHECK-NEXT: DW_AT_name {{.*}} "i"
+; CHECK_NEXT: DW_AT_default_value {{.*}} true
+
+; ModuleID = '/dir/test.cpp'
+source_filename = "test.cpp"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+%class.foo = type { i8 }
+%class.foo.0 = type { i8 }
+; Function Attrs: noinline norecurse nounwind optnone uwtable
+define dso_local i32 @main() #0 !dbg !7 {
+entry:
+ %retval = alloca i32, align 4
+ %f1 = alloca %class.foo, align 1
+ %f2 = alloca %class.foo.0, align 1
+ store i32 0, i32* %retval, align 4
+ call void @llvm.dbg.declare(metadata %class.foo* %f1, metadata !11, metadata !DIExpression()), !dbg !16
+ call void @llvm.dbg.declare(metadata %class.foo.0* %f2, metadata !17, metadata !DIExpression()), !dbg !23
+ ret i32 0, !dbg !24
+}
+; Function Attrs: nounwind readnone speculatable willreturn
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+attributes #0 = { noinline norecurse nounwind optnone uwtable }
+attributes #1 = { nounwind readnone speculatable willreturn }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !5}
+!llvm.ident = !{!6}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
+!1 = !DIFile(filename: "test.cpp", directory: "/dir/", checksumkind: CSK_MD5, checksum: "863d08522c2300490dea873efc4b2369")
+!2 = !{}
+!3 = !{i32 7, !"Dwarf Version", i32 5}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!5 = !{i32 1, !"wchar_size", i32 4}
+!6 = !{!"clang version 11.0.0"}
+!7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 29, type: !8, scopeLine: 29, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
+!8 = !DISubroutineType(types: !9)
+!9 = !{!10}
+!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!11 = !DILocalVariable(name: "f1", scope: !7, file: !1, line: 30, type: !12)
+!12 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "foo<int, 6>", file: !1, line: 26, size: 8, flags: DIFlagTypePassByValue, elements: !2, templateParams: !13, identifier: "_ZTS3fooIiLi6EE")
+!13 = !{!14, !15}
+!14 = !DITemplateTypeParameter(name: "T", type: !10, defaulted: false)
+!15 = !DITemplateValueParameter(name: "i", type: !10, defaulted: false, value: i32 6)
+!16 = !DILocation(line: 30, column: 14, scope: !7)
+!17 = !DILocalVariable(name: "f2", scope: !7, file: !1, line: 31, type: !18)
+!18 = distinct !DICompositeType(tag: DW_TAG_class_type, name: "foo<char, 3>", file: !1, line: 26, size: 8, flags: DIFlagTypePassByValue, elements: !2, templateParams: !19, identifier: "_ZTS3fooIcLi3EE")
+!19 = !{!20, !22}
+!20 = !DITemplateTypeParameter(name: "T", type: !21, defaulted: true)
+!21 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
+!22 = !DITemplateValueParameter(name: "i", type: !10, defaulted: true, value: i32 3)
+!23 = !DILocation(line: 31, column: 9, scope: !7)
+!24 = !DILocation(line: 32, column: 3, scope: !7)
Index: llvm/lib/IR/LLVMContextImpl.h
===================================================================
--- llvm/lib/IR/LLVMContextImpl.h
+++ llvm/lib/IR/LLVMContextImpl.h
@@ -843,36 +843,45 @@
template <> struct MDNodeKeyImpl<DITemplateTypeParameter> {
MDString *Name;
Metadata *Type;
+ bool IsDefault;
- MDNodeKeyImpl(MDString *Name, Metadata *Type) : Name(Name), Type(Type) {}
+ MDNodeKeyImpl(MDString *Name, Metadata *Type, bool IsDefault)
+ : Name(Name), Type(Type), IsDefault(IsDefault) {}
MDNodeKeyImpl(const DITemplateTypeParameter *N)
- : Name(N->getRawName()), Type(N->getRawType()) {}
+ : Name(N->getRawName()), Type(N->getRawType()),
+ IsDefault(N->isDefault()) {}
bool isKeyOf(const DITemplateTypeParameter *RHS) const {
- return Name == RHS->getRawName() && Type == RHS->getRawType();
+ return Name == RHS->getRawName() && Type == RHS->getRawType() &&
+ IsDefault == RHS->isDefault();
}
- unsigned getHashValue() const { return hash_combine(Name, Type); }
+ unsigned getHashValue() const { return hash_combine(Name, Type, IsDefault); }
};
template <> struct MDNodeKeyImpl<DITemplateValueParameter> {
unsigned Tag;
MDString *Name;
Metadata *Type;
+ bool IsDefault;
Metadata *Value;
- MDNodeKeyImpl(unsigned Tag, MDString *Name, Metadata *Type, Metadata *Value)
- : Tag(Tag), Name(Name), Type(Type), Value(Value) {}
+ MDNodeKeyImpl(unsigned Tag, MDString *Name, Metadata *Type, bool IsDefault,
+ Metadata *Value)
+ : Tag(Tag), Name(Name), Type(Type), IsDefault(IsDefault), Value(Value) {}
MDNodeKeyImpl(const DITemplateValueParameter *N)
: Tag(N->getTag()), Name(N->getRawName()), Type(N->getRawType()),
- Value(N->getValue()) {}
+ IsDefault(N->isDefault()), Value(N->getValue()) {}
bool isKeyOf(const DITemplateValueParameter *RHS) const {
return Tag == RHS->getTag() && Name == RHS->getRawName() &&
- Type == RHS->getRawType() && Value == RHS->getValue();
+ Type == RHS->getRawType() && IsDefault == RHS->isDefault() &&
+ Value == RHS->getValue();
}
- unsigned getHashValue() const { return hash_combine(Tag, Name, Type, Value); }
+ unsigned getHashValue() const {
+ return hash_combine(Tag, Name, Type, IsDefault, Value);
+ }
};
template <> struct MDNodeKeyImpl<DIGlobalVariable> {
Index: llvm/lib/IR/DebugInfoMetadata.cpp
===================================================================
--- llvm/lib/IR/DebugInfoMetadata.cpp
+++ llvm/lib/IR/DebugInfoMetadata.cpp
@@ -724,24 +724,24 @@
DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DIModule, Ops);
}
-DITemplateTypeParameter *DITemplateTypeParameter::getImpl(LLVMContext &Context,
- MDString *Name,
- Metadata *Type,
- StorageType Storage,
- bool ShouldCreate) {
+DITemplateTypeParameter *
+DITemplateTypeParameter::getImpl(LLVMContext &Context, MDString *Name,
+ Metadata *Type, bool isDefault,
+ StorageType Storage, bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
- DEFINE_GETIMPL_LOOKUP(DITemplateTypeParameter, (Name, Type));
+ DEFINE_GETIMPL_LOOKUP(DITemplateTypeParameter, (Name, Type, isDefault));
Metadata *Ops[] = {Name, Type};
- DEFINE_GETIMPL_STORE_NO_CONSTRUCTOR_ARGS(DITemplateTypeParameter, Ops);
+ DEFINE_GETIMPL_STORE(DITemplateTypeParameter, (isDefault), Ops);
}
DITemplateValueParameter *DITemplateValueParameter::getImpl(
LLVMContext &Context, unsigned Tag, MDString *Name, Metadata *Type,
- Metadata *Value, StorageType Storage, bool ShouldCreate) {
+ bool isDefault, Metadata *Value, StorageType Storage, bool ShouldCreate) {
assert(isCanonical(Name) && "Expected canonical MDString");
- DEFINE_GETIMPL_LOOKUP(DITemplateValueParameter, (Tag, Name, Type, Value));
+ DEFINE_GETIMPL_LOOKUP(DITemplateValueParameter,
+ (Tag, Name, Type, isDefault, Value));
Metadata *Ops[] = {Name, Type, Value};
- DEFINE_GETIMPL_STORE(DITemplateValueParameter, (Tag), Ops);
+ DEFINE_GETIMPL_STORE(DITemplateValueParameter, (Tag, isDefault), Ops);
}
DIGlobalVariable *
Index: llvm/lib/IR/DIBuilder.cpp
===================================================================
--- llvm/lib/IR/DIBuilder.cpp
+++ llvm/lib/IR/DIBuilder.cpp
@@ -406,25 +406,26 @@
DITemplateTypeParameter *
DIBuilder::createTemplateTypeParameter(DIScope *Context, StringRef Name,
- DIType *Ty) {
+ DIType *Ty, bool isDefault) {
assert((!Context || isa<DICompileUnit>(Context)) && "Expected compile unit");
- return DITemplateTypeParameter::get(VMContext, Name, Ty);
+ return DITemplateTypeParameter::get(VMContext, Name, Ty, isDefault);
}
static DITemplateValueParameter *
createTemplateValueParameterHelper(LLVMContext &VMContext, unsigned Tag,
DIScope *Context, StringRef Name, DIType *Ty,
- Metadata *MD) {
+ bool IsDefault, Metadata *MD) {
assert((!Context || isa<DICompileUnit>(Context)) && "Expected compile unit");
- return DITemplateValueParameter::get(VMContext, Tag, Name, Ty, MD);
+ return DITemplateValueParameter::get(VMContext, Tag, Name, Ty, IsDefault, MD);
}
DITemplateValueParameter *
DIBuilder::createTemplateValueParameter(DIScope *Context, StringRef Name,
- DIType *Ty, Constant *Val) {
+ DIType *Ty, bool isDefault,
+ Constant *Val) {
return createTemplateValueParameterHelper(
VMContext, dwarf::DW_TAG_template_value_parameter, Context, Name, Ty,
- getConstantOrNull(Val));
+ isDefault, getConstantOrNull(Val));
}
DITemplateValueParameter *
@@ -432,7 +433,7 @@
DIType *Ty, StringRef Val) {
return createTemplateValueParameterHelper(
VMContext, dwarf::DW_TAG_GNU_template_template_param, Context, Name, Ty,
- MDString::get(VMContext, Val));
+ false, MDString::get(VMContext, Val));
}
DITemplateValueParameter *
@@ -440,7 +441,7 @@
DIType *Ty, DINodeArray Val) {
return createTemplateValueParameterHelper(
VMContext, dwarf::DW_TAG_GNU_template_parameter_pack, Context, Name, Ty,
- Val.get());
+ false, Val.get());
}
DICompositeType *DIBuilder::createClassType(
Index: llvm/lib/IR/AsmWriter.cpp
===================================================================
--- llvm/lib/IR/AsmWriter.cpp
+++ llvm/lib/IR/AsmWriter.cpp
@@ -2071,6 +2071,8 @@
MDFieldPrinter Printer(Out, TypePrinter, Machine, Context);
Printer.printString("name", N->getName());
Printer.printMetadata("type", N->getRawType(), /* ShouldSkipNull */ false);
+ if (Context->getDwarfVersion() >= 5)
+ Printer.printBool("defaulted", N->isDefault());
Out << ")";
}
@@ -2085,6 +2087,8 @@
Printer.printTag(N);
Printer.printString("name", N->getName());
Printer.printMetadata("type", N->getRawType());
+ if (Context->getDwarfVersion() >= 5)
+ Printer.printBool("defaulted", N->isDefault());
Printer.printMetadata("value", N->getValue(), /* ShouldSkipNull */ false);
Out << ")";
}
Index: llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
===================================================================
--- llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
+++ llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
@@ -1046,6 +1046,8 @@
addType(ParamDIE, TP->getType());
if (!TP->getName().empty())
addString(ParamDIE, dwarf::DW_AT_name, TP->getName());
+ if (TP->isDefault() && (DD->getDwarfVersion() >= 5))
+ addFlag(ParamDIE, dwarf::DW_AT_default_value);
}
void DwarfUnit::constructTemplateValueParameterDIE(
@@ -1058,6 +1060,8 @@
addType(ParamDIE, VP->getType());
if (!VP->getName().empty())
addString(ParamDIE, dwarf::DW_AT_name, VP->getName());
+ if (VP->isDefault() && (DD->getDwarfVersion() >= 5))
+ addFlag(ParamDIE, dwarf::DW_AT_default_value);
if (Metadata *Val = VP->getValue()) {
if (ConstantInt *CI = mdconst::dyn_extract<ConstantInt>(Val))
addConstantValue(ParamDIE, CI, VP->getType());
Index: llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
===================================================================
--- llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -1790,6 +1790,8 @@
Record.push_back(N->isDistinct());
Record.push_back(VE.getMetadataOrNullID(N->getRawName()));
Record.push_back(VE.getMetadataOrNullID(N->getType()));
+ if (M.getDwarfVersion() >= 5)
+ Record.push_back(N->isDefault());
Stream.EmitRecord(bitc::METADATA_TEMPLATE_TYPE, Record, Abbrev);
Record.clear();
@@ -1802,6 +1804,8 @@
Record.push_back(N->getTag());
Record.push_back(VE.getMetadataOrNullID(N->getRawName()));
Record.push_back(VE.getMetadataOrNullID(N->getType()));
+ if (M.getDwarfVersion() >= 5)
+ Record.push_back(N->isDefault());
Record.push_back(VE.getMetadataOrNullID(N->getValue()));
Stream.EmitRecord(bitc::METADATA_TEMPLATE_VALUE, Record, Abbrev);
Index: llvm/lib/Bitcode/Reader/MetadataLoader.cpp
===================================================================
--- llvm/lib/Bitcode/Reader/MetadataLoader.cpp
+++ llvm/lib/Bitcode/Reader/MetadataLoader.cpp
@@ -1668,26 +1668,27 @@
break;
}
case bitc::METADATA_TEMPLATE_TYPE: {
- if (Record.size() != 3)
+ if (Record.size() < 3 || Record.size() > 4)
return error("Invalid record");
IsDistinct = Record[0];
- MetadataList.assignValue(GET_OR_DISTINCT(DITemplateTypeParameter,
- (Context, getMDString(Record[1]),
- getDITypeRefOrNull(Record[2]))),
- NextMetadataNo);
+ MetadataList.assignValue(
+ GET_OR_DISTINCT(DITemplateTypeParameter,
+ (Context, getMDString(Record[1]),
+ getDITypeRefOrNull(Record[2]), false)),
+ NextMetadataNo);
NextMetadataNo++;
break;
}
case bitc::METADATA_TEMPLATE_VALUE: {
- if (Record.size() != 5)
+ if (Record.size() < 5 || Record.size() >6)
return error("Invalid record");
IsDistinct = Record[0];
MetadataList.assignValue(
GET_OR_DISTINCT(DITemplateValueParameter,
(Context, Record[1], getMDString(Record[2]),
- getDITypeRefOrNull(Record[3]),
+ getDITypeRefOrNull(Record[3]), false,
getMDOrNull(Record[4]))),
NextMetadataNo);
NextMetadataNo++;
Index: llvm/lib/AsmParser/LLParser.cpp
===================================================================
--- llvm/lib/AsmParser/LLParser.cpp
+++ llvm/lib/AsmParser/LLParser.cpp
@@ -4839,33 +4839,38 @@
}
/// ParseDITemplateTypeParameter:
-/// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
+/// ::= !DITemplateTypeParameter(name: "Ty", type: !1, defaulted: false)
bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
OPTIONAL(name, MDStringField, ); \
- REQUIRED(type, MDField, );
+ REQUIRED(type, MDField, ); \
+ OPTIONAL(defaulted, MDBoolField, );
PARSE_MD_FIELDS();
#undef VISIT_MD_FIELDS
- Result =
- GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
+ Result = GET_OR_DISTINCT(DITemplateTypeParameter,
+ (Context, name.Val, type.Val, defaulted.Val));
return false;
}
/// ParseDITemplateValueParameter:
/// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
-/// name: "V", type: !1, value: i32 7)
+/// name: "V", type: !1, defaulted: false,
+/// value: i32 7)
bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
OPTIONAL(name, MDStringField, ); \
OPTIONAL(type, MDField, ); \
+ OPTIONAL(defaulted, MDBoolField, ); \
REQUIRED(value, MDField, );
+
PARSE_MD_FIELDS();
#undef VISIT_MD_FIELDS
- Result = GET_OR_DISTINCT(DITemplateValueParameter,
- (Context, tag.Val, name.Val, type.Val, value.Val));
+ Result = GET_OR_DISTINCT(
+ DITemplateValueParameter,
+ (Context, tag.Val, name.Val, type.Val, defaulted.Val, value.Val));
return false;
}
Index: llvm/include/llvm/IR/DebugInfoMetadata.h
===================================================================
--- llvm/include/llvm/IR/DebugInfoMetadata.h
+++ llvm/include/llvm/IR/DebugInfoMetadata.h
@@ -2131,9 +2131,11 @@
/// Base class for template parameters.
class DITemplateParameter : public DINode {
protected:
+ bool IsDefault;
+
DITemplateParameter(LLVMContext &Context, unsigned ID, StorageType Storage,
- unsigned Tag, ArrayRef<Metadata *> Ops)
- : DINode(Context, ID, Storage, Tag, Ops) {}
+ unsigned Tag, bool IsDefault, ArrayRef<Metadata *> Ops)
+ : DINode(Context, ID, Storage, Tag, Ops), IsDefault(IsDefault) {}
~DITemplateParameter() = default;
public:
@@ -2142,6 +2144,7 @@
MDString *getRawName() const { return getOperandAs<MDString>(0); }
Metadata *getRawType() const { return getOperand(1); }
+ bool isDefault() const { return IsDefault; }
static bool classof(const Metadata *MD) {
return MD->getMetadataID() == DITemplateTypeParameterKind ||
@@ -2154,30 +2157,35 @@
friend class MDNode;
DITemplateTypeParameter(LLVMContext &Context, StorageType Storage,
- ArrayRef<Metadata *> Ops)
+ bool IsDefault, ArrayRef<Metadata *> Ops)
: DITemplateParameter(Context, DITemplateTypeParameterKind, Storage,
- dwarf::DW_TAG_template_type_parameter, Ops) {}
+ dwarf::DW_TAG_template_type_parameter, IsDefault,
+ Ops) {}
~DITemplateTypeParameter() = default;
static DITemplateTypeParameter *getImpl(LLVMContext &Context, StringRef Name,
- DIType *Type, StorageType Storage,
+ DIType *Type, bool IsDefault,
+ StorageType Storage,
bool ShouldCreate = true) {
- return getImpl(Context, getCanonicalMDString(Context, Name), Type, Storage,
- ShouldCreate);
+ return getImpl(Context, getCanonicalMDString(Context, Name), Type,
+ IsDefault, Storage, ShouldCreate);
}
static DITemplateTypeParameter *getImpl(LLVMContext &Context, MDString *Name,
- Metadata *Type, StorageType Storage,
+ Metadata *Type, bool IsDefault,
+ StorageType Storage,
bool ShouldCreate = true);
TempDITemplateTypeParameter cloneImpl() const {
- return getTemporary(getContext(), getName(), getType());
+ return getTemporary(getContext(), getName(), getType(), isDefault());
}
public:
- DEFINE_MDNODE_GET(DITemplateTypeParameter, (StringRef Name, DIType *Type),
- (Name, Type))
- DEFINE_MDNODE_GET(DITemplateTypeParameter, (MDString * Name, Metadata *Type),
- (Name, Type))
+ DEFINE_MDNODE_GET(DITemplateTypeParameter,
+ (StringRef Name, DIType *Type, bool IsDefault),
+ (Name, Type, IsDefault))
+ DEFINE_MDNODE_GET(DITemplateTypeParameter,
+ (MDString * Name, Metadata *Type, bool IsDefault),
+ (Name, Type, IsDefault))
TempDITemplateTypeParameter clone() const { return cloneImpl(); }
@@ -2191,36 +2199,40 @@
friend class MDNode;
DITemplateValueParameter(LLVMContext &Context, StorageType Storage,
- unsigned Tag, ArrayRef<Metadata *> Ops)
+ unsigned Tag, bool IsDefault,
+ ArrayRef<Metadata *> Ops)
: DITemplateParameter(Context, DITemplateValueParameterKind, Storage, Tag,
- Ops) {}
+ IsDefault, Ops) {}
~DITemplateValueParameter() = default;
static DITemplateValueParameter *getImpl(LLVMContext &Context, unsigned Tag,
StringRef Name, DIType *Type,
- Metadata *Value, StorageType Storage,
+ bool IsDefault, Metadata *Value,
+ StorageType Storage,
bool ShouldCreate = true) {
return getImpl(Context, Tag, getCanonicalMDString(Context, Name), Type,
- Value, Storage, ShouldCreate);
+ IsDefault, Value, Storage, ShouldCreate);
}
static DITemplateValueParameter *getImpl(LLVMContext &Context, unsigned Tag,
MDString *Name, Metadata *Type,
- Metadata *Value, StorageType Storage,
+ bool IsDefault, Metadata *Value,
+ StorageType Storage,
bool ShouldCreate = true);
TempDITemplateValueParameter cloneImpl() const {
return getTemporary(getContext(), getTag(), getName(), getType(),
- getValue());
+ isDefault(), getValue());
}
public:
DEFINE_MDNODE_GET(DITemplateValueParameter,
- (unsigned Tag, StringRef Name, DIType *Type,
+ (unsigned Tag, StringRef Name, DIType *Type, bool IsDefault,
Metadata *Value),
- (Tag, Name, Type, Value))
- DEFINE_MDNODE_GET(DITemplateValueParameter, (unsigned Tag, MDString *Name,
- Metadata *Type, Metadata *Value),
- (Tag, Name, Type, Value))
+ (Tag, Name, Type, IsDefault, Value))
+ DEFINE_MDNODE_GET(DITemplateValueParameter,
+ (unsigned Tag, MDString *Name, Metadata *Type,
+ bool IsDefault, Metadata *Value),
+ (Tag, Name, Type, IsDefault, Value))
TempDITemplateValueParameter clone() const { return cloneImpl(); }
Index: llvm/include/llvm/IR/DIBuilder.h
===================================================================
--- llvm/include/llvm/IR/DIBuilder.h
+++ llvm/include/llvm/IR/DIBuilder.h
@@ -443,19 +443,22 @@
/// \param Scope Scope in which this type is defined.
/// \param Name Type parameter name.
/// \param Ty Parameter type.
- DITemplateTypeParameter *
- createTemplateTypeParameter(DIScope *Scope, StringRef Name, DIType *Ty);
+ /// \param IsDefault Parameter is default or not
+ DITemplateTypeParameter *createTemplateTypeParameter(DIScope *Scope,
+ StringRef Name,
+ DIType *Ty,
+ bool IsDefault);
/// Create debugging information for template
/// value parameter.
/// \param Scope Scope in which this type is defined.
/// \param Name Value parameter name.
/// \param Ty Parameter type.
+ /// \param IsDefault Parameter is default or not
/// \param Val Constant parameter value.
- DITemplateValueParameter *createTemplateValueParameter(DIScope *Scope,
- StringRef Name,
- DIType *Ty,
- Constant *Val);
+ DITemplateValueParameter *
+ createTemplateValueParameter(DIScope *Scope, StringRef Name, DIType *Ty,
+ bool IsDefault, Constant *Val);
/// Create debugging information for a template template parameter.
/// \param Scope Scope in which this type is defined.
Index: clang/test/CodeGenCXX/debug-info-template-parameter.cpp
===================================================================
--- /dev/null
+++ clang/test/CodeGenCXX/debug-info-template-parameter.cpp
@@ -0,0 +1,34 @@
+// Test for DebugInfo for Defaulted parameters for C++ templates
+// Supported: -O0, standalone DI
+
+// RUN: %clang_cc1 -dwarf-version=5 -emit-llvm -triple x86_64-linux-gnu %s -o - \
+// RUN: -O0 -disable-llvm-passes \
+// RUN: -debug-info-kind=standalone \
+// RUN: | FileCheck %s
+
+// CHECK: DILocalVariable(name: "f1", {{.*}}, type: ![[TEMPLATE_TYPE:[0-9]+]]
+// CHECK: [[TEMPLATE_TYPE]] = {{.*}}!DICompositeType({{.*}}, templateParams: ![[F1_TYPE:[0-9]+]]
+// CHECK: [[F1_TYPE]] = !{![[FIRST:[0-9]+]], ![[SECOND:[0-9]+]]}
+// CHECK: [[FIRST]] = !DITemplateTypeParameter({{.*}}, defaulted: false
+// CHECK: [[SECOND]] = !DITemplateTypeParameter({{.*}}, defaulted: true
+
+// CHECK: DILocalVariable(name: "f2", {{.*}}, type: ![[TEMPLATE_TYPE:[0-9]+]]
+// CHECK: [[TEMPLATE_TYPE]] = {{.*}}!DICompositeType({{.*}}, templateParams: ![[F2_TYPE:[0-9]+]]
+// CHECK: [[F2_TYPE]] = !{![[FIRST:[0-9]+]], ![[SECOND]]}
+// CHECK: [[FIRST]] = !DITemplateTypeParameter({{.*}}, defaulted: false
+
+// CHECK: DILocalVariable(name: "f3", {{.*}}, type: ![[TEMPLATE_TYPE:[0-9]+]]
+// CHECK: [[TEMPLATE_TYPE]] = {{.*}}!DICompositeType({{.*}}, templateParams: ![[F3_TYPE:[0-9]+]]
+// CHECK: [[F3_TYPE]] = !{![[FIRST:[0-9]+]], ![[SECOND]]}
+// CHECK: [[FIRST]] = !DITemplateTypeParameter({{.*}}, defaulted: true
+
+template <typename T = char, typename T1 = int>
+class foo {
+};
+
+int main() {
+ foo<int> f1;
+ foo<float> f2;
+ foo<> f3;
+ return 0;
+}
Index: clang/lib/CodeGen/CGDebugInfo.cpp
===================================================================
--- clang/lib/CodeGen/CGDebugInfo.cpp
+++ clang/lib/CodeGen/CGDebugInfo.cpp
@@ -1786,18 +1786,36 @@
for (unsigned i = 0, e = TAList.size(); i != e; ++i) {
const TemplateArgument &TA = TAList[i];
StringRef Name;
+ bool defaultParameter = false;
if (TPList)
Name = TPList->getParam(i)->getName();
switch (TA.getKind()) {
case TemplateArgument::Type: {
llvm::DIType *TTy = getOrCreateType(TA.getAsType(), Unit);
- TemplateParams.push_back(
- DBuilder.createTemplateTypeParameter(TheCU, Name, TTy));
+
+ if (TPList)
+ if (auto *templateType =
+ dyn_cast_or_null<TemplateTypeParmDecl>(TPList->getParam(i)))
+ if (templateType->hasDefaultArgument())
+ defaultParameter =
+ templateType->getDefaultArgument() == TA.getAsType();
+
+ TemplateParams.push_back(DBuilder.createTemplateTypeParameter(
+ TheCU, Name, TTy, defaultParameter));
+
} break;
case TemplateArgument::Integral: {
llvm::DIType *TTy = getOrCreateType(TA.getIntegralType(), Unit);
+ if (TPList)
+ if (auto *templateType =
+ dyn_cast_or_null<NonTypeTemplateParmDecl>(TPList->getParam(i)))
+ if (templateType->hasDefaultArgument())
+ defaultParameter =
+ templateType->getDefaultArgument()->EvaluateKnownConstInt(
+ CGM.getContext()) == TA.getAsIntegral();
+
TemplateParams.push_back(DBuilder.createTemplateValueParameter(
- TheCU, Name, TTy,
+ TheCU, Name, TTy, defaultParameter,
llvm::ConstantInt::get(CGM.getLLVMContext(), TA.getAsIntegral())));
} break;
case TemplateArgument::Declaration: {
@@ -1836,7 +1854,7 @@
V = V->stripPointerCasts();
}
TemplateParams.push_back(DBuilder.createTemplateValueParameter(
- TheCU, Name, TTy, cast_or_null<llvm::Constant>(V)));
+ TheCU, Name, TTy, defaultParameter, cast_or_null<llvm::Constant>(V)));
} break;
case TemplateArgument::NullPtr: {
QualType T = TA.getNullPtrType();
@@ -1854,8 +1872,8 @@
V = CGM.getCXXABI().EmitNullMemberPointer(MPT);
if (!V)
V = llvm::ConstantInt::get(CGM.Int8Ty, 0);
- TemplateParams.push_back(
- DBuilder.createTemplateValueParameter(TheCU, Name, TTy, V));
+ TemplateParams.push_back(DBuilder.createTemplateValueParameter(
+ TheCU, Name, TTy, defaultParameter, V));
} break;
case TemplateArgument::Template:
TemplateParams.push_back(DBuilder.createTemplateTemplateParameter(
@@ -1876,7 +1894,7 @@
assert(V && "Expression in template argument isn't constant");
llvm::DIType *TTy = getOrCreateType(T, Unit);
TemplateParams.push_back(DBuilder.createTemplateValueParameter(
- TheCU, Name, TTy, V->stripPointerCasts()));
+ TheCU, Name, TTy, defaultParameter, V->stripPointerCasts()));
} break;
// And the following should never occur:
case TemplateArgument::TemplateExpansion:
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