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DebugInfo: Just store the DIE by value in the DwarfUnit

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Since all 4 ctor calls in DwarfDebug just pass in a trivially
constructed DIE with the right tag type, sink the tag selection down
into the Dwarf*Unit ctors (removing the argument entirely from callers
in DwarfDebug) and initialize the DIE member in DwarfUnit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207448 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie 2014-04-28 21:14:27 +00:00
parent c5211fe18a
commit 9feea1a5a1
3 changed files with 37 additions and 40 deletions
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18
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -653,9 +653,7 @@ DwarfCompileUnit &DwarfDebug::constructDwarfCompileUnit(DICompileUnit DIUnit) {
CompilationDir = DIUnit.getDirectory();
auto OwnedUnit = make_unique<DwarfCompileUnit>(
InfoHolder.getUnits().size(),
make_unique<DIE>(dwarf::DW_TAG_compile_unit), DIUnit, Asm, this,
&InfoHolder);
InfoHolder.getUnits().size(), DIUnit, Asm, this, &InfoHolder);
DwarfCompileUnit &NewCU = *OwnedUnit;
DIE &Die = NewCU.getUnitDie();
InfoHolder.addUnit(std::move(OwnedUnit));
@ -2426,8 +2424,7 @@ void DwarfDebug::initSkeletonUnit(const DwarfUnit &U, DIE &Die,
DwarfCompileUnit &DwarfDebug::constructSkeletonCU(const DwarfCompileUnit &CU) {
auto OwnedUnit = make_unique<DwarfCompileUnit>(
CU.getUniqueID(), make_unique<DIE>(dwarf::DW_TAG_compile_unit),
CU.getCUNode(), Asm, this, &SkeletonHolder);
CU.getUniqueID(), CU.getCUNode(), Asm, this, &SkeletonHolder);
DwarfCompileUnit &NewCU = *OwnedUnit;
NewCU.initSection(Asm->getObjFileLowering().getDwarfInfoSection(),
DwarfInfoSectionSym);
@ -2445,9 +2442,8 @@ DwarfTypeUnit &DwarfDebug::constructSkeletonTU(DwarfTypeUnit &TU) {
DwarfCompileUnit &CU = static_cast<DwarfCompileUnit &>(
*SkeletonHolder.getUnits()[TU.getCU().getUniqueID()]);
auto OwnedUnit = make_unique<DwarfTypeUnit>(
TU.getUniqueID(), make_unique<DIE>(dwarf::DW_TAG_type_unit), CU, Asm,
this, &SkeletonHolder);
auto OwnedUnit = make_unique<DwarfTypeUnit>(TU.getUniqueID(), CU, Asm, this,
&SkeletonHolder);
DwarfTypeUnit &NewTU = *OwnedUnit;
NewTU.setTypeSignature(TU.getTypeSignature());
NewTU.setType(nullptr);
@ -2530,9 +2526,9 @@ void DwarfDebug::addDwarfTypeUnitType(DwarfCompileUnit &CU,
bool TopLevelType = TypeUnitsUnderConstruction.empty();
AddrPool.resetUsedFlag();
auto OwnedUnit = make_unique<DwarfTypeUnit>(
InfoHolder.getUnits().size(), make_unique<DIE>(dwarf::DW_TAG_type_unit),
CU, Asm, this, &InfoHolder, getDwoLineTable(CU));
auto OwnedUnit =
make_unique<DwarfTypeUnit>(InfoHolder.getUnits().size(), CU, Asm, this,
&InfoHolder, getDwoLineTable(CU));
DwarfTypeUnit &NewTU = *OwnedUnit;
DIE &UnitDie = NewTU.getUnitDie();
TU = &NewTU;

41
lib/CodeGen/AsmPrinter/DwarfUnit.cpp
View File

@ -41,29 +41,30 @@ GenerateDwarfTypeUnits("generate-type-units", cl::Hidden,
cl::init(false));
/// Unit - Unit constructor.
DwarfUnit::DwarfUnit(unsigned UID, std::unique_ptr<DIE> D, DICompileUnit Node,
DwarfUnit::DwarfUnit(unsigned UID, dwarf::Tag UnitTag, DICompileUnit Node,
AsmPrinter *A, DwarfDebug *DW, DwarfFile *DWU)
: UniqueID(UID), CUNode(Node), UnitDie(std::move(D)), DebugInfoOffset(0),
Asm(A), DD(DW), DU(DWU), IndexTyDie(nullptr), Section(nullptr),
: UniqueID(UID), CUNode(Node), UnitDie(UnitTag), DebugInfoOffset(0), Asm(A),
DD(DW), DU(DWU), IndexTyDie(nullptr), Section(nullptr),
Skeleton(nullptr) {
assert(UnitTag == dwarf::DW_TAG_compile_unit ||
UnitTag == dwarf::DW_TAG_type_unit);
DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
}
DwarfCompileUnit::DwarfCompileUnit(unsigned UID, std::unique_ptr<DIE> D,
DICompileUnit Node, AsmPrinter *A,
DwarfDebug *DW, DwarfFile *DWU)
: DwarfUnit(UID, std::move(D), Node, A, DW, DWU) {
DwarfCompileUnit::DwarfCompileUnit(unsigned UID, DICompileUnit Node,
AsmPrinter *A, DwarfDebug *DW,
DwarfFile *DWU)
: DwarfUnit(UID, dwarf::DW_TAG_compile_unit, Node, A, DW, DWU) {
insertDIE(Node, &getUnitDie());
}
DwarfTypeUnit::DwarfTypeUnit(unsigned UID, std::unique_ptr<DIE> D,
DwarfCompileUnit &CU, AsmPrinter *A,
DwarfTypeUnit::DwarfTypeUnit(unsigned UID, DwarfCompileUnit &CU, AsmPrinter *A,
DwarfDebug *DW, DwarfFile *DWU,
MCDwarfDwoLineTable *SplitLineTable)
: DwarfUnit(UID, std::move(D), CU.getCUNode(), A, DW, DWU), CU(CU),
SplitLineTable(SplitLineTable) {
: DwarfUnit(UID, dwarf::DW_TAG_type_unit, CU.getCUNode(), A, DW, DWU),
CU(CU), SplitLineTable(SplitLineTable) {
if (SplitLineTable)
addSectionOffset(*UnitDie, dwarf::DW_AT_stmt_list, 0);
addSectionOffset(UnitDie, dwarf::DW_AT_stmt_list, 0);
}
/// ~Unit - Destructor for compile unit.
@ -1424,7 +1425,7 @@ DIE *DwarfUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
DISubprogram SPDecl = SP.getFunctionDeclaration();
if (SPDecl.isSubprogram())
// Add subprogram definitions to the CU die directly.
ContextDIE = UnitDie.get();
ContextDIE = &getUnitDie();
// DW_TAG_inlined_subroutine may refer to this DIE.
DIE &SPDie = createAndAddDIE(dwarf::DW_TAG_subprogram, *ContextDIE, SP);
@ -1644,7 +1645,7 @@ void DwarfCompileUnit::createGlobalVariableDIE(DIGlobalVariable GV) {
if (GVContext && GV.isDefinition() && !GVContext.isCompileUnit() &&
!GVContext.isFile() && !DD->isSubprogramContext(GVContext)) {
// Create specification DIE.
VariableSpecDIE = &createAndAddDIE(dwarf::DW_TAG_variable, *UnitDie);
VariableSpecDIE = &createAndAddDIE(dwarf::DW_TAG_variable, UnitDie);
addDIEEntry(*VariableSpecDIE, dwarf::DW_AT_specification, *VariableDIE);
addBlock(*VariableSpecDIE, dwarf::DW_AT_location, Loc);
// A static member's declaration is already flagged as such.
@ -1742,7 +1743,7 @@ void DwarfUnit::constructArrayTypeDIE(DIE &Buffer, DICompositeType CTy) {
DIE *IdxTy = getIndexTyDie();
if (!IdxTy) {
// Construct an integer type to use for indexes.
IdxTy = &createAndAddDIE(dwarf::DW_TAG_base_type, *UnitDie);
IdxTy = &createAndAddDIE(dwarf::DW_TAG_base_type, UnitDie);
addString(*IdxTy, dwarf::DW_AT_name, "sizetype");
addUInt(*IdxTy, dwarf::DW_AT_byte_size, None, sizeof(int64_t));
addUInt(*IdxTy, dwarf::DW_AT_encoding, dwarf::DW_FORM_data1,
@ -2049,7 +2050,7 @@ void DwarfCompileUnit::initStmtList(MCSymbol *DwarfLineSectionSym) {
MCSymbol *LineTableStartSym =
Asm->OutStreamer.getDwarfLineTableSymbol(getUniqueID());
stmtListIndex = UnitDie->getValues().size();
stmtListIndex = UnitDie.getValues().size();
// DW_AT_stmt_list is a offset of line number information for this
// compile unit in debug_line section. For split dwarf this is
@ -2057,16 +2058,16 @@ void DwarfCompileUnit::initStmtList(MCSymbol *DwarfLineSectionSym) {
// The line table entries are not always emitted in assembly, so it
// is not okay to use line_table_start here.
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
addSectionLabel(*UnitDie, dwarf::DW_AT_stmt_list, LineTableStartSym);
addSectionLabel(UnitDie, dwarf::DW_AT_stmt_list, LineTableStartSym);
else
addSectionDelta(*UnitDie, dwarf::DW_AT_stmt_list, LineTableStartSym,
addSectionDelta(UnitDie, dwarf::DW_AT_stmt_list, LineTableStartSym,
DwarfLineSectionSym);
}
void DwarfCompileUnit::applyStmtList(DIE &D) {
D.addValue(dwarf::DW_AT_stmt_list,
UnitDie->getAbbrev().getData()[stmtListIndex].getForm(),
UnitDie->getValues()[stmtListIndex]);
UnitDie.getAbbrev().getData()[stmtListIndex].getForm(),
UnitDie.getValues()[stmtListIndex]);
}
void DwarfTypeUnit::emitHeader(const MCSymbol *ASectionSym) const {

18
lib/CodeGen/AsmPrinter/DwarfUnit.h
View File

@ -73,7 +73,7 @@ protected:
DICompileUnit CUNode;
/// Unit debug information entry.
const std::unique_ptr<DIE> UnitDie;
DIE UnitDie;
/// Offset of the UnitDie from beginning of debug info section.
unsigned DebugInfoOffset;
@ -144,8 +144,8 @@ protected:
/// Skeleton unit associated with this unit.
DwarfUnit *Skeleton;
DwarfUnit(unsigned UID, std::unique_ptr<DIE> D, DICompileUnit CU,
AsmPrinter *A, DwarfDebug *DW, DwarfFile *DWU);
DwarfUnit(unsigned UID, dwarf::Tag, DICompileUnit CU, AsmPrinter *A,
DwarfDebug *DW, DwarfFile *DWU);
public:
virtual ~DwarfUnit();
@ -215,7 +215,7 @@ public:
unsigned getUniqueID() const { return UniqueID; }
uint16_t getLanguage() const { return CUNode.getLanguage(); }
DICompileUnit getCUNode() const { return CUNode; }
DIE &getUnitDie() const { return *UnitDie; }
DIE &getUnitDie() { return UnitDie; }
const StringMap<const DIE *> &getGlobalNames() const { return GlobalNames; }
const StringMap<const DIE *> &getGlobalTypes() const { return GlobalTypes; }
@ -223,7 +223,7 @@ public:
void setDebugInfoOffset(unsigned DbgInfoOff) { DebugInfoOffset = DbgInfoOff; }
/// hasContent - Return true if this compile unit has something to write out.
bool hasContent() const { return !UnitDie->getChildren().empty(); }
bool hasContent() const { return !UnitDie.getChildren().empty(); }
/// addRange - Add an address range to the list of ranges for this unit.
void addRange(RangeSpan Range);
@ -533,8 +533,8 @@ class DwarfCompileUnit : public DwarfUnit {
unsigned stmtListIndex;
public:
DwarfCompileUnit(unsigned UID, std::unique_ptr<DIE> D, DICompileUnit Node,
AsmPrinter *A, DwarfDebug *DW, DwarfFile *DWU);
DwarfCompileUnit(unsigned UID, DICompileUnit Node, AsmPrinter *A,
DwarfDebug *DW, DwarfFile *DWU);
void initStmtList(MCSymbol *DwarfLineSectionSym);
@ -567,8 +567,8 @@ private:
MCDwarfDwoLineTable *SplitLineTable;
public:
DwarfTypeUnit(unsigned UID, std::unique_ptr<DIE> D, DwarfCompileUnit &CU,
AsmPrinter *A, DwarfDebug *DW, DwarfFile *DWU,
DwarfTypeUnit(unsigned UID, DwarfCompileUnit &CU, AsmPrinter *A,
DwarfDebug *DW, DwarfFile *DWU,
MCDwarfDwoLineTable *SplitLineTable = nullptr);
void setTypeSignature(uint64_t Signature) { TypeSignature = Signature; }