After fixing PR26715 at r263379.
llvm-svn: 263424
// Construct the context before querying for the existence of the DIE in
// case such construction creates the DIE.
- DIE *ContextDIE = getOrCreateContextDIE(GVContext);
+ // For Local Scope, do not construct context DIE.
+ bool IsLocalScope = GVContext && isa<DILocalScope>(GVContext);
+ DIE *ContextDIE = IsLocalScope ? nullptr : getOrCreateContextDIE(GVContext);
+ assert(ContextDIE || IsLocalScope);
+
+ // Create new global variable and add to map.
+ DIE *VariableDIE = IsLocalScope
+ ? createDIE(GV->getTag(), GV)
+ : &createAndAddDIE(GV->getTag(), *ContextDIE, GV);
- // Add to map.
- DIE *VariableDIE = &createAndAddDIE(GV->getTag(), *ContextDIE, GV);
DIScope *DeclContext;
if (auto *SDMDecl = GV->getStaticDataMemberDeclaration()) {
DeclContext = resolve(SDMDecl->getScope());
if (DD->isLexicalScopeDIENull(Scope))
return;
- unsigned ChildScopeCount;
+ bool HasNonScopeChildren;
// We create children here when we know the scope DIE is not going to be
// null and the children will be added to the scope DIE.
- createScopeChildrenDIE(Scope, Children, &ChildScopeCount);
-
- // Skip imported directives in gmlt-like data.
- if (!includeMinimalInlineScopes()) {
- // There is no need to emit empty lexical block DIE.
- for (const auto *IE : ImportedEntities[DS])
- Children.push_back(
- constructImportedEntityDIE(cast<DIImportedEntity>(IE)));
- }
+ createScopeChildrenDIE(Scope, Children, &HasNonScopeChildren);
// If there are only other scopes as children, put them directly in the
// parent instead, as this scope would serve no purpose.
- if (Children.size() == ChildScopeCount) {
+ if (!HasNonScopeChildren) {
FinalChildren.insert(FinalChildren.end(),
std::make_move_iterator(Children.begin()),
std::make_move_iterator(Children.end()));
ScopeDIE->addChild(std::move(I));
FinalChildren.push_back(std::move(ScopeDIE));
+ addLocalScopeDieToLexicalScope(Scope, ScopeDIE);
}
DIE::value_iterator
DIE *DwarfCompileUnit::createScopeChildrenDIE(LexicalScope *Scope,
SmallVectorImpl<DIE *> &Children,
- unsigned *ChildScopeCount) {
+ bool *HasNonScopeChildren) {
DIE *ObjectPointer = nullptr;
+ bool HasLocalDclDie = false;
+ auto *DS = Scope->getScopeNode();
for (DbgVariable *DV : DU->getScopeVariables().lookup(Scope))
Children.push_back(constructVariableDIE(*DV, *Scope, ObjectPointer));
- unsigned ChildCountWithoutScopes = Children.size();
+ // Skip local declarations in gmlt-like data.
+ if (!includeMinimalInlineScopes()) {
+ for (const auto *DI : LocalDeclNodes[DS]) {
+ DIE *D = nullptr;
+ if (auto *IE = dyn_cast<DIImportedEntity>(DI))
+ D = getOrCreateImportedEntityDIE(IE);
+ else if (auto *GV = dyn_cast<DIGlobalVariable>(DI))
+ D = getOrCreateGlobalVariableDIE(GV);
+ else if (auto *RT = dyn_cast<DIType>(DI))
+ D = getOrCreateTypeDIE(RT);
+ else
+ llvm_unreachable("Unexpected DI node!");
+ addLocalDclDieToLexicalScope(Scope, D);
+ HasLocalDclDie = true;
+ }
+ }
+
+ if (HasNonScopeChildren)
+ *HasNonScopeChildren = !Children.empty() || HasLocalDclDie;
for (LexicalScope *LS : Scope->getChildren())
constructScopeDIE(LS, Children);
- if (ChildScopeCount)
- *ChildScopeCount = Children.size() - ChildCountWithoutScopes;
-
return ObjectPointer;
}
for (auto &I : Children)
ScopeDIE.addChild(std::move(I));
+ addLocalScopeDieToLexicalScope(Scope, &ScopeDIE);
+
return ObjectPointer;
}
addDIEEntry(*AbsDef, dwarf::DW_AT_object_pointer, *ObjectPointer);
}
+DIE *DwarfCompileUnit::getOrCreateImportedEntityDIE(
+ const DIImportedEntity *Module) {
+ if (DIE *Die = getDIE(Module))
+ return Die;
+
+ return constructImportedEntityDIE(Module);
+}
+
DIE *DwarfCompileUnit::constructImportedEntityDIE(
const DIImportedEntity *Module) {
- DIE *IMDie = DIE::get(DIEValueAllocator, (dwarf::Tag)Module->getTag());
- insertDIE(Module, IMDie);
+
+ assert(!getDIE(Module));
+
+ DIE *IMDie = createDIE(Module->getTag(), Module);
DIE *EntityDie;
auto *Entity = resolve(Module->getEntity());
if (auto *NS = dyn_cast<DINamespace>(Entity))
}
void DwarfCompileUnit::finishSubprogramDefinition(const DISubprogram *SP) {
- DIE *D = getDIE(SP);
- if (DIE *AbsSPDIE = DU->getAbstractSPDies().lookup(SP)) {
- if (D)
+ if (DIE *D = getDIE(SP)) {
+ if (DIE *AbsSPDIE = DU->getAbstractSPDies().lookup(SP))
// If this subprogram has an abstract definition, reference that
addDIEEntry(*D, dwarf::DW_AT_abstract_origin, *AbsSPDIE);
- } else {
- if (!D && !includeMinimalInlineScopes())
- // Lazily construct the subprogram if we didn't see either concrete or
- // inlined versions during codegen. (except in -gmlt ^ where we want
- // to omit these entirely)
- D = getOrCreateSubprogramDIE(SP);
- if (D)
+ else
// And attach the attributes
applySubprogramAttributesToDefinition(SP, *D);
}
}
+
+void DwarfCompileUnit::finishLocalScopeDefinitions() {
+ for (const auto &I : getLSDieInfoMap()) {
+ auto LSInfo = I.second;
+ // Attach all local dcl DIEs to abstract local scope if available,
+ // otherwise attach it to concrete local scope.
+ DIE *LBDie =
+ LSInfo.AbstractLSDie ? LSInfo.AbstractLSDie : LSInfo.ConcreteLSDie;
+ assert(LBDie || LSInfo.LocalDclDies.empty());
+ for (auto &D : LSInfo.LocalDclDies)
+ LBDie->addChild(std::move(D));
+
+ if (isa<DISubprogram>(I.first))
+ // For function scope there is nothing else to do.
+ // "abstract_origin" dwarf attribute was added somewhere else.
+ continue;
+
+ if (LSInfo.AbstractLSDie) {
+ // Add "abstract_origin" dwarf attribute to concrete local scope pointing
+ // to the corresponding abstract local scope.
+ if (LSInfo.ConcreteLSDie)
+ addDIEEntry(*LSInfo.ConcreteLSDie, dwarf::DW_AT_abstract_origin,
+ *LSInfo.AbstractLSDie);
+ // Add "abstract_origin" dwarf attribute to inline local scope pointing
+ // to the corresponding abstract local scope.
+ for (auto &L : LSInfo.InlineLSDies)
+ addDIEEntry(*L, dwarf::DW_AT_abstract_origin, *LSInfo.AbstractLSDie);
+ }
+ }
+}
+
void DwarfCompileUnit::collectDeadVariables(const DISubprogram *SP) {
assert(SP && "CU's subprogram list contains a non-subprogram");
assert(SP->isDefinition() &&
DIE *SPDIE = DU->getAbstractSPDies().lookup(SP);
if (!SPDIE)
- SPDIE = getDIE(SP);
+ return;
assert(SPDIE);
for (const DILocalVariable *DV : Variables) {
DbgVariable NewVar(DV, /* IA */ nullptr, DD);
addGlobalName(SP->getName(), SPDie, Context);
}
+void DwarfCompileUnit::addLocalScopeDieToLexicalScope(LexicalScope *LS,
+ DIE *D) {
+ auto &LSInfo = getLSDieInfoMap()[LS->getScopeNode()];
+ if (LS->isAbstractScope()) {
+ assert(!LSInfo.AbstractLSDie && "Adding abstract LS DIE twice.");
+ LSInfo.AbstractLSDie = D;
+ return;
+ }
+ if (LS->getInlinedAt()) {
+ assert(!LSInfo.InlineLSDies.count(D) && "Adding inline LS DIE twice.");
+ LSInfo.InlineLSDies.insert(D);
+ return;
+ }
+ assert(!LSInfo.ConcreteLSDie && "Adding cocncrete LS DIE twice.");
+ LSInfo.ConcreteLSDie = D;
+ return;
+}
+
+void DwarfCompileUnit::addLocalDclDieToLexicalScope(LexicalScope *LS, DIE *D) {
+ auto &LSInfo = getLSDieInfoMap()[LS->getScopeNode()];
+ LSInfo.LocalDclDies.insert(D);
+ return;
+}
+
bool DwarfCompileUnit::isDwoUnit() const {
return DD->useSplitDwarf() && Skeleton;
}
#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
#include "DwarfUnit.h"
+#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/Support/Dwarf.h"
/// The start of the unit macro info within macro section.
MCSymbol *MacroLabelBegin;
- typedef llvm::SmallVector<const MDNode *, 8> ImportedEntityList;
- typedef llvm::DenseMap<const MDNode *, ImportedEntityList>
- ImportedEntityMap;
+ typedef llvm::SmallVector<const MDNode *, 8> LocalDeclNodeList;
+ typedef llvm::DenseMap<const MDNode *, LocalDeclNodeList> LocalScopesMap;
- ImportedEntityMap ImportedEntities;
+ LocalScopesMap LocalDeclNodes;
/// GlobalNames - A map of globally visible named entities for this unit.
StringMap<const DIE *> GlobalNames;
// ranges/locs.
const MCSymbol *BaseAddress;
+ struct LocalScopeDieInfo {
+ DIE *ConcreteLSDie = nullptr;
+ DIE *AbstractLSDie = nullptr;
+ SetVector<DIE *> InlineLSDies;
+ SetVector<DIE *> LocalDclDies;
+ };
+ // Collection of local scope DIE info.
+ DenseMap<const MDNode *, LocalScopeDieInfo> LocalScopeDieInfoMap;
+
/// \brief Construct a DIE for the given DbgVariable without initializing the
/// DbgVariable's DIE reference.
DIE *constructVariableDIEImpl(const DbgVariable &DV, bool Abstract);
unsigned getOrCreateSourceID(StringRef FileName, StringRef DirName) override;
- void addImportedEntity(const DIImportedEntity* IE) {
- ImportedEntities[IE->getScope()].push_back(IE);
+ void addLocalDeclNode(const DINode *DI, DILocalScope *Scope) {
+ LocalDeclNodes[Scope].push_back(DI);
}
/// addRange - Add an address range to the list of ranges for this unit.
/// A helper function to create children of a Scope DIE.
DIE *createScopeChildrenDIE(LexicalScope *Scope,
SmallVectorImpl<DIE *> &Children,
- unsigned *ChildScopeCount = nullptr);
+ bool *HasNonScopeChildren = nullptr);
/// \brief Construct a DIE for this subprogram scope.
void constructSubprogramScopeDIE(LexicalScope *Scope);
void constructAbstractSubprogramScopeDIE(LexicalScope *Scope);
+ /// \brief Get or create import_module DIE.
+ DIE *getOrCreateImportedEntityDIE(const DIImportedEntity *Module);
/// \brief Construct import_module DIE.
DIE *constructImportedEntityDIE(const DIImportedEntity *Module);
void finishSubprogramDefinition(const DISubprogram *SP);
+ void finishLocalScopeDefinitions();
+
void collectDeadVariables(const DISubprogram *SP);
/// Set the skeleton unit associated with this unit.
void setBaseAddress(const MCSymbol *Base) { BaseAddress = Base; }
const MCSymbol *getBaseAddress() const { return BaseAddress; }
+
+ DenseMap<const MDNode *, LocalScopeDieInfo> &getLSDieInfoMap() {
+ return LocalScopeDieInfoMap;
+ }
+
+ /// Add local scope DIE entry to lexical scope info.
+ void addLocalScopeDieToLexicalScope(LexicalScope *LS, DIE *D);
+ /// Add local declaration DIE entry to lexical scope info.
+ void addLocalDclDieToLexicalScope(LexicalScope *LS, DIE *D);
};
} // end llvm namespace
D->addChild(TheCU.constructImportedEntityDIE(N));
}
+bool DwarfDebug::collectLocalScopedNode(DIScope *S, const DINode *N,
+ DwarfCompileUnit &CU) {
+ if (auto LS = dyn_cast_or_null<DILocalScope>(S)) {
+ getLocalScopes(LS->getSubprogram()).insert(LS);
+ CU.addLocalDeclNode(N, LS);
+ return true;
+ }
+ return false;
+}
+
// Emit all Dwarf sections that should come prior to the content. Create
// global DIEs and emit initial debug info sections. This is invoked by
// the target AsmPrinter.
for (MDNode *N : CU_Nodes->operands()) {
auto *CUNode = cast<DICompileUnit>(N);
DwarfCompileUnit &CU = constructDwarfCompileUnit(CUNode);
- for (auto *IE : CUNode->getImportedEntities())
- CU.addImportedEntity(IE);
for (auto *GV : CUNode->getGlobalVariables())
- CU.getOrCreateGlobalVariableDIE(GV);
+ if (!collectLocalScopedNode(GV->getScope(), GV, CU))
+ CU.getOrCreateGlobalVariableDIE(GV);
for (auto *SP : CUNode->getSubprograms())
SPMap.insert(std::make_pair(SP, &CU));
for (auto *Ty : CUNode->getEnumTypes()) {
// The retained types array by design contains pointers to
// MDNodes rather than DIRefs. Unique them here.
DIType *RT = cast<DIType>(resolve(Ty->getRef()));
- if (!RT->isExternalTypeRef())
+ if (RT->isExternalTypeRef())
// There is no point in force-emitting a forward declaration.
+ continue;
+ if (!collectLocalScopedNode(resolve(Ty->getScope()), RT, CU))
CU.getOrCreateTypeDIE(RT);
}
// Emit imported_modules last so that the relevant context is already
// available.
for (auto *IE : CUNode->getImportedEntities())
- constructAndAddImportedEntityDIE(CU, IE);
+ if (!collectLocalScopedNode(IE->getScope(), IE, CU))
+ constructAndAddImportedEntityDIE(CU, IE);
}
// Tell MMI that we have debug info.
});
}
+void DwarfDebug::finishLocalScopeDefinitions() {
+ for (const auto &I : CUMap)
+ I.second->finishLocalScopeDefinitions();
+}
+
// Collect info for variables that were optimized out.
void DwarfDebug::collectDeadVariables() {
const Module *M = MMI->getModule();
finishSubprogramDefinitions();
+ finishLocalScopeDefinitions();
+
finishVariableDefinitions();
// Collect info for variables that were optimized out.
assert(LScopes.getAbstractScopesList().size() == NumAbstractScopes
&& "ensureAbstractVariableIsCreated inserted abstract scopes");
}
+ // Assure abstract local scope created for each one contains local DIEs.
+ for (const DILocalScope *LS : getLocalScopes(SP))
+ LScopes.getOrCreateAbstractScope(LS);
constructAbstractSubprogramScopeDIE(AScope);
}
/// Size of each symbol emitted (for those symbols that have a specific size).
DenseMap<const MCSymbol *, uint64_t> SymSize;
+ /// Holder for scopes containing local declaration DI nodes per DI function.
+ DenseMap<const DISubprogram *, SmallPtrSet<const DILocalScope *, 16>>
+ LocalScopesMap;
+
/// Collection of abstract variables.
DenseMap<const MDNode *, std::unique_ptr<DbgVariable>> AbstractVariables;
SmallVector<std::unique_ptr<DbgVariable>, 64> ConcreteVariables;
void finishSubprogramDefinitions();
+ void finishLocalScopeDefinitions();
+
/// Finish off debug information after all functions have been
/// processed.
void finalizeModuleInfo();
void constructAndAddImportedEntityDIE(DwarfCompileUnit &TheCU,
const DIImportedEntity *N);
+ /// Collect MD Node located within local scope node.
+ /// Return true if node was collected, false otherwise.
+ bool collectLocalScopedNode(DIScope *S, const DINode *N,
+ DwarfCompileUnit &CU);
+
/// Register a source line with debug info. Returns the unique
/// label that was emitted and which provides correspondence to the
/// source line list.
SmallPtrSet<const MDNode *, 16> &getProcessedSPNodes() {
return ProcessedSPNodes;
}
+
+ /// Return collection of function scopes that contains local declararion DIEs.
+ SmallPtrSet<const DILocalScope *, 16> &
+ getLocalScopes(const DISubprogram *SP) {
+ return LocalScopesMap[SP];
+ }
};
} // End of namespace llvm
Entry);
}
-DIE &DwarfUnit::createAndAddDIE(unsigned Tag, DIE &Parent, const DINode *N) {
- DIE &Die = Parent.addChild(DIE::get(DIEValueAllocator, (dwarf::Tag)Tag));
+DIE *DwarfUnit::createDIE(unsigned Tag, const DINode *N) {
+ DIE *Die = DIE::get(DIEValueAllocator, (dwarf::Tag)Tag);
if (N)
- insertDIE(N, &Die);
+ insertDIE(N, Die);
+ return Die;
+}
+
+DIE &DwarfUnit::createAndAddDIE(unsigned Tag, DIE &Parent, const DINode *N) {
+ DIE &Die = Parent.addChild(createDIE(Tag, N));
return Die;
}
// Construct the context before querying for the existence of the DIE in case
// such construction creates the DIE.
+ // For Local Scope, do not construct context DIE.
auto *Context = resolve(Ty->getScope());
- DIE *ContextDIE = getOrCreateContextDIE(Context);
- assert(ContextDIE);
+ bool IsLocalScope = Context && isa<DILocalScope>(Context);
+ DIE *ContextDIE = IsLocalScope ? nullptr : getOrCreateContextDIE(Context);
+ assert(ContextDIE || IsLocalScope);
if (DIE *TyDIE = getDIE(Ty))
return TyDIE;
- // Create new type.
- DIE &TyDIE = createAndAddDIE(Ty->getTag(), *ContextDIE, Ty);
+ // Create new type and add to map.
+ DIE &TyDIE = IsLocalScope ? *createDIE(Ty->getTag(), Ty)
+ : createAndAddDIE(Ty->getTag(), *ContextDIE, Ty);
updateAcceleratorTables(Context, Ty, TyDIE);
/// Construct function argument DIEs.
void constructSubprogramArguments(DIE &Buffer, DITypeRefArray Args);
+ /// Create a DIE with the given Tag, and call insertDIE if MD is not null.
+ DIE *createDIE(unsigned Tag, const DINode *N = nullptr);
+
/// Create a DIE with the given Tag, add the DIE to its parent, and
/// call insertDIE if MD is not null.
DIE &createAndAddDIE(unsigned Tag, DIE &Parent, const DINode *N = nullptr);
!1 = distinct !DILexicalBlock(line: 15, column: 12, file: !38, scope: !2)
!2 = distinct !DISubprogram(name: "main", linkageName: "main", line: 15, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 15, file: !38, scope: !3, type: !5)
!3 = !DIFile(filename: "one.cc", directory: "/tmp")
-!4 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang 1.5", isOptimized: false, emissionKind: 0, file: !38, enums: !39, retainedTypes: !39, subprograms: !37, imports: null)
+!4 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang 1.5", isOptimized: false, emissionKind: 0, file: !38, enums: !39, retainedTypes: !41, subprograms: !37, imports: null)
!5 = !DISubroutineType(types: !6)
!6 = !{!7}
!7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!38 = !DIFile(filename: "one.cc", directory: "/tmp")
!39 = !{}
!40 = !{i32 1, !"Debug Info Version", i32 3}
+!41 = !{!21}
\ No newline at end of file
!0 = distinct !DISubprogram(name: "foo", line: 9, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 9, file: !27, scope: !1, type: !3, variables: !24)
!1 = !DIFile(filename: "bar.c", directory: "/tmp/")
-!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !27, enums: !20, retainedTypes: !20, subprograms: !25, globals: !26, imports: !20)
+!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !27, enums: !20, retainedTypes: !61, subprograms: !25, globals: !26, imports: !20)
!3 = !DISubroutineType(types: !4)
!4 = !{!5, !5}
!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!59 = !DILocalVariable(name: "j", line: 9, arg: 1, scope: !0, file: !1, type: !5)
!60 = !DILocalVariable(name: "xyz", line: 10, scope: !11, file: !1, type: !12)
+!61 = !{!12}
!11 = distinct !DILexicalBlock(line: 9, column: 0, file: !1, scope: !0)
!12 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", line: 10, size: 64, align: 32, file: !27, scope: !0, elements: !13)
; CHECK: DW_AT_name {{.*}} "func"
; CHECK: DW_TAG_compile_unit
-; FIXME: Maybe we should drop the subprogram here - since the function was
+; Check that the subprogram is dropped in this CU - since the function was
; emitted in one CU, due to linkonce_odr uniquing. We certainly don't emit the
; subprogram here if the source location for this definition is the same (see
; test/DebugInfo/cross-cu-linkonce.ll), though it's very easy to tickle that
; directory of the source file even though the file name is absolute, not
; relative)
-; CHECK: DW_TAG_subprogram
+; CHECK-NOT: DW_TAG_subprogram
@x = global i32 (i32)* @_Z4funci, align 8
@y = global i32 (i32)* @_Z4funci, align 8
attributes #0 = { inlinehint nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone }
-!llvm.dbg.cu = !{!12, !0}
+!llvm.dbg.cu = !{!0, !12}
!llvm.module.flags = !{!19, !20}
!llvm.ident = !{!21, !21}
; CHECK-NOT: NULL
; CHECK: [[BAR:0x[0-9a-f]*]]:{{ *}}DW_TAG_structure_type
; CHECK-NEXT: DW_AT_name{{.*}}= "bar"
+; CHECK: DW_TAG_subprogram
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_MIPS_linkage_name
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_name{{.*}}= "f1"
; CHECK: [[FUNC1:.*]]: DW_TAG_subprogram
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_MIPS_linkage_name
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name{{.*}}= "func_fwd"
; CHECK-NOT: DW_AT_declaration
-; CHECK: DW_TAG_subprogram
-; CHECK-NOT: DW_TAG
-; CHECK: DW_AT_MIPS_linkage_name
-; CHECK-NOT: DW_TAG
-; CHECK: DW_AT_name{{.*}}= "f1"
; CHECK: NULL
; CHECK-NOT: NULL
; CHECK: DW_TAG_subprogram
; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_name{{.*}}= "__cxx_global_var_init"
+; CHECK-NOT: DW_TAG
+
+; CHECK: DW_TAG_subprogram
+; CHECK-NOT: DW_TAG
; CHECK: DW_AT_MIPS_linkage_name
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name{{.*}}= "func"
; CHECK-NOT: NULL
+; CHECK: DW_TAG_lexical_block
+; CHECK-NOT: NULL
+; CHECK: DW_TAG_imported_module
+; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
+; CHECK-NEXT: DW_AT_decl_line{{.*}}(23)
+; CHECK-NEXT: DW_AT_import{{.*}}=>
+; CHECK: NULL
+; CHECK-NOT: NULL
; CHECK: DW_TAG_imported_module
; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
; CHECK-NEXT: DW_AT_decl_line{{.*}}(26)
; CHECK-NEXT: DW_AT_decl_line{{.*}}(37)
; CHECK-NEXT: DW_AT_import{{.*}}=> {[[FUNC_FWD]]})
-; CHECK: DW_TAG_lexical_block
-; CHECK-NOT: NULL
-; CHECK: DW_TAG_imported_module
-; CHECK-NEXT: DW_AT_decl_file{{.*}}([[F2]])
-; CHECK-NEXT: DW_AT_decl_line{{.*}}(23)
-; CHECK-NEXT: DW_AT_import{{.*}}=>
-; CHECK: NULL
; CHECK: NULL
; CHECK: NULL
; f1();
; }
-; Check that there's only one DW_TAG_subprogram, nothing for the 'f2' function.
-; CHECK: DW_TAG_subprogram
-; CHECK-NOT: DW_TAG
-; CHECK: DW_AT_name {{.*}} "f1"
+; Check that there is no DW_TAG_subprogram, nothing for the 'f2' function.
+; Note: No debug info was emitted for 'f1' function because it has no code.
; CHECK-NOT: DW_TAG_subprogram
@i = external global i32
!0 = distinct !DISubprogram(name: "foo", line: 9, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 9, file: !27, scope: !1, type: !3, variables: !24)
!1 = !DIFile(filename: "bar.c", directory: "/tmp/")
-!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !27, enums: !20, retainedTypes: !20, subprograms: !25, globals: !26, imports: !20)
+!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !27, enums: !20, retainedTypes: !61, subprograms: !25, globals: !26, imports: !20)
!3 = !DISubroutineType(types: !4)
!4 = !{!5, !5}
!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!59 = !DILocalVariable(name: "j", line: 9, arg: 1, scope: !0, file: !1, type: !5)
!60 = !DILocalVariable(name: "xyz", line: 10, scope: !11, file: !1, type: !12)
+!61 = !{!12}
!11 = distinct !DILexicalBlock(line: 9, column: 0, file: !1, scope: !0)
!12 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", line: 10, size: 64, align: 32, file: !27, scope: !0, elements: !13)
!0 = distinct !DISubprogram(name: "foo", line: 9, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 9, file: !27, scope: !1, type: !3, variables: !24)
!1 = !DIFile(filename: "bar.c", directory: "/tmp/")
-!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !27, enums: !20, retainedTypes: !20, subprograms: !25, globals: !26, imports: !20)
+!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !27, enums: !20, retainedTypes: !111, subprograms: !25, globals: !26, imports: !20)
!3 = !DISubroutineType(types: !4)
!4 = !{!5, !5}
!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!109 = !DILocalVariable(name: "j", line: 9, arg: 1, scope: !0, file: !1, type: !5)
!110 = !DILocalVariable(name: "xyz", line: 10, scope: !11, file: !1, type: !12)
+!111 = !{!12}
!11 = distinct !DILexicalBlock(line: 9, column: 0, file: !1, scope: !0)
!12 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", line: 10, size: 64, align: 32, file: !27, scope: !0, elements: !13)
--- /dev/null
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
+
+;; This test checks the following:
+;; 1. Compilation does not crash
+;; 2. "f1" function is defined.
+;; 3. "nested::f2" function is not defined.
+;;
+;; This test was generated by running following command:
+;; clang -cc1 -O0 -g -emit-llvm foo.cpp -o - | opt -S -inline -sroa
+;; Where test.cpp
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;void f1() {
+;; while (true) {
+;; struct nested {
+;; static void f2() {}
+;; };
+;; nested::f2();
+;; }
+;;}
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+; CHECK: DW_TAG_compile_unit
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_TAG_subprogram
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "f1"
+; CHECK: NULL
+
+; CHECK-NOT: DW_TAG_subprogram
+
+
+; Function Attrs: nounwind
+define void @_Z2f1v() #0 !dbg !6 {
+entry:
+ br label %while.body, !dbg !16
+
+while.body: ; preds = %while.body, %entry
+ br label %while.body, !dbg !16
+
+return: ; No predecessors!
+ ret void, !dbg !17
+}
+
+attributes #0 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!13, !14}
+!llvm.ident = !{!15}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 242994) (llvm/trunk 242995)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !3, subprograms: !11)
+!1 = !DIFile(filename: "foo.cpp", directory: "/")
+!2 = !{}
+!3 = !{!4}
+!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "nested", scope: !5, file: !1, line: 3, size: 8, align: 8, elements: !9)
+!5 = distinct !DILexicalBlock(scope: !6, file: !1, line: 2)
+!6 = distinct !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
+!7 = !DISubroutineType(types: !8)
+!8 = !{null}
+!9 = !{!10}
+!10 = distinct !DISubprogram(name: "f2", scope: !4, file: !1, line: 4, type: !7, isLocal: false, isDefinition: false, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false)
+!11 = !{!6, !12}
+!12 = distinct !DISubprogram(name: "f2", linkageName: "_ZZ2f1vEN6nested2f2Ev", scope: !4, file: !1, line: 4, type: !7, isLocal: true, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false, declaration: !10, variables: !2)
+!13 = !{i32 2, !"Dwarf Version", i32 4}
+!14 = !{i32 2, !"Debug Info Version", i32 3}
+!15 = !{!"clang version 3.8.0 (trunk 242994) (llvm/trunk 242995)"}
+!16 = !DILocation(line: 2, scope: !6)
+!17 = !DILocation(line: 8, scope: !6)
declare i32 @printf(i8*, ...) nounwind
define i32 @main() nounwind !dbg !6 {
- ret i32 0
+ ret i32 0, !dbg !13
}
!llvm.dbg.cu = !{!2}
!10 = !DIFile(filename: "simple.c", directory: "/Users/manav/one/two")
!11 = !{}
!12 = !{i32 1, !"Debug Info Version", i32 3}
+!13 = !DILocation(line: 10, scope: !6)
; return 1;
; }
-; Check that we still have the structure type for X even though we're not
-; going to emit a low/high_pc for foo.
-; CHECK: DW_TAG_structure_type
+; Check that we will not have the structure type for X as we are going to omit
+; the function foo.
+; CHECK-NOT: DW_TAG_structure_type
; Function Attrs: nounwind readnone uwtable
define i32 @bar() #0 !dbg !4 {
!llvm.module.flags = !{!18, !19}
!llvm.ident = !{!20}
-!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (trunk 209255) (llvm/trunk 209253)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (trunk 209255) (llvm/trunk 209253)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !22, subprograms: !3, globals: !2, imports: !2)
!1 = !DIFile(filename: "debug-dead-local-var.c", directory: "/usr/local/google/home/echristo")
!2 = !{}
!3 = !{!4, !9}
!19 = !{i32 2, !"Debug Info Version", i32 3}
!20 = !{!"clang version 3.5.0 (trunk 209255) (llvm/trunk 209253)"}
!21 = !DILocation(line: 13, scope: !4)
+!22 = !{!14}
; CHECK: DW_AT_linkage_name
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name {{.*}} "global_namespace_function"
-
-; CHECK: DW_TAG_subprogram
-; CHECK-NOT: DW_TAG
-; CHECK: DW_AT_name {{.*}} "f3"
-; CHECK-NOT: {{DW_TAG|NULL}}
-; CHECK: [[F3_Z:.*]]: DW_TAG_variable
-; CHECK-NOT: DW_TAG
-; CHECK: DW_AT_name {{.*}} "z"
-; CHECK-NOT: {{DW_TAG|NULL}}
-; CHECK: DW_AT_location
-; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK: NULL
; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK-NOT: DW_TAG
; CHECK: DW_AT_name {{.*}} "global_function"
+; CHECK: DW_TAG_subprogram
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_name {{.*}} "f3"
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: [[F3_Z:.*]]: DW_TAG_variable
+; CHECK-NOT: DW_TAG
+; CHECK: DW_AT_name {{.*}} "z"
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_location
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: NULL
+
; CHECK-LABEL: .debug_gnu_pubnames contents:
; CHECK-NEXT: length = {{.*}} version = 0x0002 unit_offset = 0x00000000 unit_size = {{.*}}
; CHECK-NEXT: Offset Linkage Kind Name
; CHECK-NEXT: [[NS]] EXTERNAL TYPE "ns"
; CHECK-NEXT: [[OUTER_ANON_C]] STATIC VARIABLE "outer::(anonymous namespace)::c"
; CHECK-NEXT: [[ANON_I]] STATIC VARIABLE "(anonymous namespace)::i"
+; CHECK-NEXT: [[ANON]] EXTERNAL TYPE "(anonymous namespace)"
; GCC Doesn't put local statics in pubnames, but it seems not unreasonable and
; comes out naturally from LLVM's implementation, so I'm OK with it for now. If
; it's demonstrated that this is a major size concern or degrades debug info
; consumer behavior, feel free to change it.
; CHECK-NEXT: [[F3_Z]] STATIC VARIABLE "f3::z"
-; CHECK-NEXT: [[ANON]] EXTERNAL TYPE "(anonymous namespace)"
; CHECK-NEXT: [[OUTER_ANON]] EXTERNAL TYPE "outer::(anonymous namespace)"
; CHECK-NEXT: [[ANON_INNER_B]] STATIC VARIABLE "(anonymous namespace)::inner::b"
; CHECK-NEXT: [[OUTER]] EXTERNAL TYPE "outer"
--- /dev/null
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -split-dwarf=Enable -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=info.dwo - | FileCheck %s
+
+;; This test checks the following:
+;; 1. Useless lexical block entry is not emitted.
+;; 2. Function static variable, typedef, records (structure, class and union)
+;; that are defined in lexical basic block are emitted as children to
+;; these lexical blocks.
+;; * For typedef and record check that both are emitted in lexical block
+;; where they are declared and not in the one where they are used.
+;; 3. "bar" function, which was inlined into "foo" function, is created as
+;; abstract (with DW_AT_inline attribute).
+;; All variables and types are defined in this abstract entry.
+;; 4. "bar" function is created in "foo" function as inlined function
+;; (with DW_TAG_inlined_subroutine attribute), and all its local variables
+;; are created as concrete variables pointing to the abstract suitable entry
+;; defined under abstract "bar" function.
+;; 5. Lexical block entries created in the inline "bar" function entry have
+;; "DW_AT_abstract_origin" attribute pointing to the equivalent abstract
+;; lexical block entry.
+;;
+;; This test was generated by running following command:
+;; clang -cc1 -O0 -g -emit-llvm foo.cpp -o - | opt -S -inline -sroa
+;; Where foo.cpp
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;__inline int bar(int s) {
+;; {
+;; {
+;; struct X {
+;; int x;
+;; };
+;; typedef int Y;
+;; {
+;; X a = { s };
+;; Y b(s);
+;; static int c = 0;
+;; return a.x + b + c++;
+;; }
+;; }
+;; }
+;;}
+;;
+;;
+;;int foo(int i) {
+;; return
+;; bar(i);
+;;}
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+; CHECK: [[Offset_bar:0x[0-9abcdef]+]]: DW_TAG_subprogram
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "bar"
+; CHECK: DW_AT_inline
+; CHECK-NOT: NULL
+; CHECK: DW_TAG_lexical_block
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: [[Offset_LB2:0x[0-9abcdef]+]]: DW_TAG_lexical_block
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: [[Offset_a:0x[0-9abcdef]+]]: DW_TAG_variable
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "a"
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: [[Offset_b:0x[0-9abcdef]+]]: DW_TAG_variable
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "b"
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: [[Offset_c:0x[0-9abcdef]+]]: DW_TAG_variable
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "c"
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_location
+
+; CHECK-NOT: {{DW_TAG}}
+; CHECK: NULL
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: [[Offset_X:0x[0-9abcdef]+]]: DW_TAG_structure_type
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "X"
+; CHECK: NULL
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: [[Offset_Y:0x[0-9abcdef]+]]: DW_TAG_typedef
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "Y"
+
+; CHECK-NOT: {{DW_TAG}}
+; CHECK: NULL
+
+
+; CHECK: DW_TAG_subprogram
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "foo"
+; CHECK-NOT: {{NULL}}
+; CHECK: DW_TAG_inlined_subroutine
+; CHECK-NEXT: DW_AT_abstract_origin {{.*}} {[[Offset_bar]]}
+
+; CHECK-NOT: {{NULL}}
+; CHECK: DW_TAG_lexical_block
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_TAG_lexical_block
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_abstract_origin {{.*}} {[[Offset_LB2]]}
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_TAG_variable
+; CHECK-NEXT: DW_AT_location
+; CHECK-NEXT: DW_AT_abstract_origin {{.*}} {[[Offset_a]]}
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_TAG_variable
+; CHECK-NEXT: DW_AT_location
+; CHECK-NEXT: DW_AT_abstract_origin {{.*}} {[[Offset_b]]}
+
+; CHECK-NOT: {{DW_TAG}}
+; CHECK: NULL
+
+; CHECK-NOT: {{DW_TAG}}
+; CHECK: NULL
+
+%struct.X = type { i32 }
+
+$_ZZ3bariE1c = comdat any
+
+@_ZZ3bariE1c = linkonce_odr global i32 0, comdat, align 4
+
+; Function Attrs: nounwind
+define i32 @_Z3fooi(i32 %i) #0 !dbg !15 {
+entry:
+ call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !22, metadata !23), !dbg !24
+ call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !25, metadata !23), !dbg !26
+ call void @llvm.dbg.declare(metadata %struct.X* undef, metadata !28, metadata !23), !dbg !29
+ call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !28, metadata !23), !dbg !29
+ call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !30, metadata !23), !dbg !31
+ %add.i = add nsw i32 %i, %i, !dbg !32
+ %0 = load i32, i32* @_ZZ3bariE1c, align 4, !dbg !32
+ %inc.i = add nsw i32 %0, 1, !dbg !32
+ store i32 %inc.i, i32* @_ZZ3bariE1c, align 4, !dbg !32
+ %add2.i = add nsw i32 %add.i, %0, !dbg !32
+ ret i32 %add2.i, !dbg !33
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
+
+attributes #0 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nounwind readnone }
+
+!llvm.dbg.cu = !{!0, !34}
+!llvm.module.flags = !{!19, !20}
+!llvm.ident = !{!21}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 242994) (llvm/trunk 242995)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !3, subprograms: !14, globals: !16)
+!1 = !DIFile(filename: "foo.cpp", directory: "/")
+!2 = !{}
+!3 = !{!4, !13}
+!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", scope: !5, file: !1, line: 4, size: 32, align: 32, elements: !11, identifier: "_ZTSZ3bariE1X")
+!5 = distinct !DILexicalBlock(scope: !6, file: !1, line: 3)
+!6 = distinct !DILexicalBlock(scope: !7, file: !1, line: 2)
+!7 = distinct !DISubprogram(name: "bar", linkageName: "_Z3bari", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
+!8 = !DISubroutineType(types: !9)
+!9 = !{!10, !10}
+!10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!11 = !{!12}
+!12 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !"_ZTSZ3bariE1X", file: !1, line: 5, baseType: !10, size: 32, align: 32)
+!13 = !DIDerivedType(tag: DW_TAG_typedef, name: "Y", scope: !5, file: !1, line: 7, baseType: !10)
+!14 = !{!15, !7}
+!15 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi", scope: !1, file: !1, line: 19, type: !8, isLocal: false, isDefinition: true, scopeLine: 19, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
+!16 = !{!17}
+!17 = !DIGlobalVariable(name: "c", scope: !18, file: !1, line: 11, type: !10, isLocal: false, isDefinition: true, variable: i32* @_ZZ3bariE1c)
+!18 = distinct !DILexicalBlock(scope: !5, file: !1, line: 8)
+!19 = !{i32 2, !"Dwarf Version", i32 4}
+!20 = !{i32 2, !"Debug Info Version", i32 3}
+!21 = !{!"clang version 3.8.0 (trunk 242994) (llvm/trunk 242995)"}
+!22 = !DILocalVariable(name: "i", arg: 1, scope: !15, file: !1, line: 19, type: !10)
+!23 = !DIExpression()
+!24 = !DILocation(line: 19, scope: !15)
+!25 = !DILocalVariable(name: "s", arg: 1, scope: !7, file: !1, line: 1, type: !10)
+!26 = !DILocation(line: 1, scope: !7, inlinedAt: !27)
+!27 = distinct !DILocation(line: 21, scope: !15)
+!28 = !DILocalVariable(name: "a", scope: !18, file: !1, line: 9, type: !"_ZTSZ3bariE1X")
+!29 = !DILocation(line: 9, scope: !18, inlinedAt: !27)
+!30 = !DILocalVariable(name: "b", scope: !18, file: !1, line: 10, type: !13)
+!31 = !DILocation(line: 10, scope: !18, inlinedAt: !27)
+!32 = !DILocation(line: 12, scope: !18, inlinedAt: !27)
+!33 = !DILocation(line: 20, scope: !15)
+
+; This line is manually added to check that the test does not crash when having
+; more than one compile unit!
+!34 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 242994) (llvm/trunk 242995)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !2)
--- /dev/null
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
+
+;; This test checks the following:
+;; 1. Useless lexical block entry is not emitted.
+;; 2. Function static variable, typedef, records (structure, class and union)
+;; that are defined in lexical basic block are emitted as children to
+;; these lexical blocks.
+;; * For typedef and record check that both are emitted in lexical block
+;; where they are declared and not in the one where they are used.
+;;
+;; This test was generated by running following command:
+;; clang -cc1 -O0 -g -emit-llvm foo.cpp
+;; Where foo.cpp
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;int foo(void) {
+;; {
+;; {
+;; struct X {
+;; int x;
+;; };
+;; typedef int Y;
+;; {
+;; X a;
+;; Y b;
+;; static int c;
+;; return a.x + b + c;
+;; }
+;; }
+;; }
+;;}
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+
+; CHECK: DW_TAG_subprogram
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "foo"
+; CHECK-NOT: NULL
+; CHECK: DW_TAG_lexical_block
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_TAG_lexical_block
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_TAG_variable
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "a"
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_TAG_variable
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "b"
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_TAG_variable
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "c"
+
+; CHECK-NOT: {{DW_TAG}}
+; CHECK: NULL
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_TAG_structure_type
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "X"
+; CHECK: NULL
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_TAG_typedef
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "Y"
+
+; CHECK-NOT: {{DW_TAG}}
+; CHECK: NULL
+
+%struct.X = type { i32 }
+
+@_ZZ3foovE1c = internal global i32 0, align 4
+
+; Function Attrs: nounwind
+define i32 @_Z3foov() #0 !dbg !7 {
+entry:
+ %a = alloca %struct.X, align 4
+ %b = alloca i32, align 4
+ call void @llvm.dbg.declare(metadata %struct.X* %a, metadata !21, metadata !22), !dbg !23
+ call void @llvm.dbg.declare(metadata i32* %b, metadata !24, metadata !22), !dbg !25
+ %x = getelementptr inbounds %struct.X, %struct.X* %a, i32 0, i32 0, !dbg !26
+ %0 = load i32, i32* %x, align 4, !dbg !26
+ %1 = load i32, i32* %b, align 4, !dbg !26
+ %add = add nsw i32 %0, %1, !dbg !26
+ %2 = load i32, i32* @_ZZ3foovE1c, align 4, !dbg !26
+ %add1 = add nsw i32 %add, %2, !dbg !26
+ ret i32 %add1, !dbg !26
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "target-features"="+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nounwind readnone }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!18, !19}
+!llvm.ident = !{!20}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 237245)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !3, subprograms: !14, globals: !15, imports: !2)
+!1 = !DIFile(filename: "foo.cpp", directory: "/")
+!2 = !{}
+!3 = !{!4, !13}
+!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", scope: !5, file: !1, line: 4, size: 32, align: 32, elements: !11)
+!5 = distinct !DILexicalBlock(scope: !6, file: !1, line: 3)
+!6 = distinct !DILexicalBlock(scope: !7, file: !1, line: 2)
+!7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
+!8 = !DISubroutineType(types: !9)
+!9 = !{!10}
+!10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!11 = !{!12}
+!12 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !4, file: !1, line: 5, baseType: !10, size: 32, align: 32)
+!13 = !DIDerivedType(tag: DW_TAG_typedef, name: "Y", scope: !5, file: !1, line: 7, baseType: !10)
+!14 = !{!7}
+!15 = !{!16}
+!16 = !DIGlobalVariable(name: "c", scope: !17, file: !1, line: 11, type: !10, isLocal: true, isDefinition: true, variable: i32* @_ZZ3foovE1c)
+!17 = distinct !DILexicalBlock(scope: !5, file: !1, line: 8)
+!18 = !{i32 2, !"Dwarf Version", i32 4}
+!19 = !{i32 2, !"Debug Info Version", i32 3}
+!20 = !{!"clang version 3.7.0 (trunk 237245)"}
+!21 = !DILocalVariable(name: "a", scope: !17, file: !1, line: 9, type: !4)
+!22 = !DIExpression()
+!23 = !DILocation(line: 9, scope: !17)
+!24 = !DILocalVariable(name: "b", scope: !17, file: !1, line: 10, type: !13)
+!25 = !DILocation(line: 10, scope: !17)
+!26 = !DILocation(line: 12, scope: !17)
--- /dev/null
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -split-dwarf=Enable -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=info.dwo - | FileCheck %s
+
+;; This test checks the following:
+;; 2. Function static variable, typedef, records (structure, class and union)
+;; that are defined in lexical function scope are emitted as children to
+;; the function scope, directly.
+;; 3. "bar" function, which was inlined into "foo" function, is created as
+;; abstract (with DW_AT_inline attribute).
+;; All variables and types are defined in this abstract entry.
+;; 4. "bar" function is created in "foo" function as inlined function
+;; (with DW_TAG_inlined_subroutine attribute), and all its local variables
+;; are created as concrete variables pointing to the abstract suitable entry
+;; defined under abstract "bar" function.
+;;
+;; This test was generated by running following command:
+;; clang -cc1 -O0 -g -emit-llvm foo.cpp -o - | opt -S -inline -sroa
+;; Where foo.cpp
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;__inline int bar(int s) {
+;;
+;;
+;; struct X {
+;; int x;
+;; };
+;; typedef int Y;
+;;
+;; X a = { s };
+;; Y b(s);
+;; static int c = 0;
+;; return a.x + b + c++;
+;;
+;;
+;;
+;;}
+;;
+;;
+;;int foo(int i) {
+;; return
+;; bar(i);
+;;}
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+; CHECK: [[Offset_bar:0x[0-9abcdef]+]]: DW_TAG_subprogram
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "bar"
+; CHECK: DW_AT_inline
+; CHECK-NOT: NULL
+
+; CHECK: [[Offset_a:0x[0-9abcdef]+]]: DW_TAG_variable
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "a"
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: [[Offset_b:0x[0-9abcdef]+]]: DW_TAG_variable
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "b"
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: [[Offset_c:0x[0-9abcdef]+]]: DW_TAG_variable
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "c"
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_location
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: [[Offset_X:0x[0-9abcdef]+]]: DW_TAG_structure_type
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "X"
+; CHECK: NULL
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: [[Offset_Y:0x[0-9abcdef]+]]: DW_TAG_typedef
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "Y"
+
+; CHECK-NOT: {{DW_TAG}}
+; CHECK: NULL
+
+
+; CHECK: DW_TAG_subprogram
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_AT_name {{.*}} "foo"
+; CHECK-NOT: {{NULL}}
+; CHECK: DW_TAG_inlined_subroutine
+; CHECK-NEXT: DW_AT_abstract_origin {{.*}} {[[Offset_bar]]}
+
+; CHECK-NOT: {{NULL}}
+; CHECK: DW_TAG_variable
+; CHECK-NEXT: DW_AT_location
+; CHECK-NEXT: DW_AT_abstract_origin {{.*}} {[[Offset_a]]}
+
+; CHECK-NOT: {{DW_TAG|NULL}}
+; CHECK: DW_TAG_variable
+; CHECK-NEXT: DW_AT_location
+; CHECK-NEXT: DW_AT_abstract_origin {{.*}} {[[Offset_b]]}
+
+; CHECK-NOT: {{DW_TAG}}
+; CHECK: NULL
+
+%struct.X = type { i32 }
+
+$_ZZ3bariE1c = comdat any
+
+@_ZZ3bariE1c = linkonce_odr global i32 0, comdat, align 4
+
+; Function Attrs: nounwind
+define i32 @_Z3fooi(i32 %i) #0 !dbg !13 {
+entry:
+ call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !18, metadata !19), !dbg !20
+ call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !21, metadata !19), !dbg !22
+ call void @llvm.dbg.declare(metadata %struct.X* undef, metadata !24, metadata !19), !dbg !25
+ call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !24, metadata !19), !dbg !25
+ call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !26, metadata !19), !dbg !27
+ %add.i = add nsw i32 %i, %i, !dbg !28
+ %0 = load i32, i32* @_ZZ3bariE1c, align 4, !dbg !28
+ %inc.i = add nsw i32 %0, 1, !dbg !28
+ store i32 %inc.i, i32* @_ZZ3bariE1c, align 4, !dbg !28
+ %add2.i = add nsw i32 %add.i, %0, !dbg !28
+ ret i32 %add2.i, !dbg !29
+}
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+; Function Attrs: nounwind readnone
+declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
+
+attributes #0 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-features"="+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nounwind readnone }
+
+!llvm.dbg.cu = !{!0, !30}
+!llvm.module.flags = !{!16}
+!llvm.ident = !{!17}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 256818)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !3, subprograms: !12, globals: !14)
+!1 = !DIFile(filename: "foo.cpp", directory: "/")
+!2 = !{}
+!3 = !{!4, !11}
+!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", scope: !5, file: !1, line: 4, size: 32, align: 32, elements: !9, identifier: "_ZTSZ3bariE1X")
+!5 = distinct !DISubprogram(name: "bar", linkageName: "_Z3bari", scope: !1, file: !1, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
+!6 = !DISubroutineType(types: !7)
+!7 = !{!8, !8}
+!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!9 = !{!10}
+!10 = !DIDerivedType(tag: DW_TAG_member, name: "x", scope: !"_ZTSZ3bariE1X", file: !1, line: 5, baseType: !8, size: 32, align: 32)
+!11 = !DIDerivedType(tag: DW_TAG_typedef, name: "Y", scope: !5, file: !1, line: 7, baseType: !8)
+!12 = !{!13, !5}
+!13 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi", scope: !1, file: !1, line: 19, type: !6, isLocal: false, isDefinition: true, scopeLine: 19, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
+!14 = !{!15}
+!15 = !DIGlobalVariable(name: "c", scope: !5, file: !1, line: 11, type: !8, isLocal: false, isDefinition: true, variable: i32* @_ZZ3bariE1c)
+!16 = !{i32 2, !"Debug Info Version", i32 3}
+!17 = !{!"clang version 3.8.0 (trunk 256818)"}
+!18 = !DILocalVariable(name: "i", arg: 1, scope: !13, file: !1, line: 19, type: !8)
+!19 = !DIExpression()
+!20 = !DILocation(line: 19, scope: !13)
+!21 = !DILocalVariable(name: "s", arg: 1, scope: !5, file: !1, line: 1, type: !8)
+!22 = !DILocation(line: 1, scope: !5, inlinedAt: !23)
+!23 = distinct !DILocation(line: 21, scope: !13)
+!24 = !DILocalVariable(name: "a", scope: !5, file: !1, line: 9, type: !"_ZTSZ3bariE1X")
+!25 = !DILocation(line: 9, scope: !5, inlinedAt: !23)
+!26 = !DILocalVariable(name: "b", scope: !5, file: !1, line: 10, type: !11)
+!27 = !DILocation(line: 10, scope: !5, inlinedAt: !23)
+!28 = !DILocation(line: 12, scope: !5, inlinedAt: !23)
+!29 = !DILocation(line: 20, scope: !13)
+
+; This line is manually added to check that the test does not crash when having
+; more than one compile unit!
+!30 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 242994) (llvm/trunk 242995)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !2)
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