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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195119 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2013-11-19 09:04:36 +00:00
parent ed1951e79f
commit eee5230373
1 changed files with 283 additions and 249 deletions
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404
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@@ -63,8 +63,7 @@ GenerateODRHash("generate-odr-hash", cl::Hidden,
cl::desc("Add an ODR hash to external type DIEs."),
cl::init(false));
static cl::opt<bool>
GenerateCUHash("generate-cu-hash", cl::Hidden,
static cl::opt<bool> GenerateCUHash("generate-cu-hash", cl::Hidden,
cl::desc("Add the CU hash as the dwo_id."),
cl::init(false));
@@ -118,8 +117,7 @@ namespace llvm {
/// resolve - Look in the DwarfDebug map for the MDNode that
/// corresponds to the reference.
template <typename T>
T DbgVariable::resolve(DIRef<T> Ref) const {
template <typename T> T DbgVariable::resolve(DIRef<T> Ref) const {
return DD->resolve(Ref);
}
@@ -181,8 +179,7 @@ static unsigned getDwarfVersionFromModule(const Module *M) {
DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
: Asm(A), MMI(Asm->MMI), FirstCU(0),
AbbreviationsSet(InitAbbreviationsSetSize),
SourceIdMap(DIEValueAllocator),
PrevLabel(NULL), GlobalCUIndexCount(0),
SourceIdMap(DIEValueAllocator), PrevLabel(NULL), GlobalCUIndexCount(0),
InfoHolder(A, &AbbreviationsSet, Abbreviations, "info_string",
DIEValueAllocator),
SkeletonAbbrevSet(InitAbbreviationsSetSize),
@@ -228,7 +225,8 @@ DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
static MCSymbol *emitSectionSym(AsmPrinter *Asm, const MCSection *Section,
const char *SymbolStem = 0) {
Asm->OutStreamer.SwitchSection(Section);
if (!SymbolStem) return 0;
if (!SymbolStem)
return 0;
MCSymbol *TmpSym = Asm->GetTempSymbol(SymbolStem);
Asm->OutStreamer.EmitLabel(TmpSym);
@@ -242,7 +240,8 @@ MCSymbol *DwarfUnits::getStringPoolSym() {
MCSymbol *DwarfUnits::getStringPoolEntry(StringRef Str) {
std::pair<MCSymbol *, unsigned> &Entry =
StringPool.GetOrCreateValue(Str).getValue();
if (Entry.first) return Entry.first;
if (Entry.first)
return Entry.first;
Entry.second = NextStringPoolNumber++;
return Entry.first = Asm->GetTempSymbol(StringPref, Entry.second);
@@ -251,7 +250,8 @@ MCSymbol *DwarfUnits::getStringPoolEntry(StringRef Str) {
unsigned DwarfUnits::getStringPoolIndex(StringRef Str) {
std::pair<MCSymbol *, unsigned> &Entry =
StringPool.GetOrCreateValue(Str).getValue();
if (Entry.first) return Entry.second;
if (Entry.first)
return Entry.second;
Entry.second = NextStringPoolNumber++;
Entry.first = Asm->GetTempSymbol(StringPref, Entry.second);
@@ -294,7 +294,8 @@ static bool isObjCClass(StringRef Name) {
}
static bool hasObjCCategory(StringRef Name) {
if (!isObjCClass(Name)) return false;
if (!isObjCClass(Name))
return false;
return Name.find(") ") != StringRef::npos;
}
@@ -327,9 +328,9 @@ static bool SectionSort(const MCSection *A, const MCSection *B) {
// TODO: Determine whether or not we should add names for programs
// that do not have a DW_AT_name or DW_AT_linkage_name field - this
// is only slightly different than the lookup of non-standard ObjC names.
static void addSubprogramNames(CompileUnit *TheCU, DISubprogram SP,
DIE* Die) {
if (!SP.isDefinition()) return;
static void addSubprogramNames(CompileUnit *TheCU, DISubprogram SP, DIE *Die) {
if (!SP.isDefinition())
return;
TheCU->addAccelName(SP.getName(), Die);
// If the linkage name is different than the name, go ahead and output
@@ -388,8 +389,7 @@ DIE *DwarfDebug::updateSubprogramScopeDIE(CompileUnit *SPCU, DISubprogram SP) {
// specification DIE for a function defined inside a function.
DIScope SPContext = resolve(SP.getContext());
if (SP.isDefinition() && !SPContext.isCompileUnit() &&
!SPContext.isFile() &&
!isSubprogramContext(SPContext)) {
!SPContext.isFile() && !isSubprogramContext(SPContext)) {
SPCU->addFlag(SPDie, dwarf::DW_AT_declaration);
// Add arguments.
@@ -415,12 +415,12 @@ DIE *DwarfDebug::updateSubprogramScopeDIE(CompileUnit *SPCU, DISubprogram SP) {
}
}
SPCU->addLabelAddress(SPDie, dwarf::DW_AT_low_pc,
Asm->GetTempSymbol("func_begin",
Asm->getFunctionNumber()));
SPCU->addLabelAddress(SPDie, dwarf::DW_AT_high_pc,
Asm->GetTempSymbol("func_end",
Asm->getFunctionNumber()));
SPCU->addLabelAddress(
SPDie, dwarf::DW_AT_low_pc,
Asm->GetTempSymbol("func_begin", Asm->getFunctionNumber()));
SPCU->addLabelAddress(
SPDie, dwarf::DW_AT_high_pc,
Asm->GetTempSymbol("func_end", Asm->getFunctionNumber()));
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
MachineLocation Location(RI->getFrameRegister(*Asm->MF));
SPCU->addAddress(SPDie, dwarf::DW_AT_frame_base, Location);
@@ -471,10 +471,11 @@ DIE *DwarfDebug::constructLexicalScopeDIE(CompileUnit *TheCU,
// .debug_range as a uint, size 4, for now. emitDIE will handle
// DW_AT_ranges appropriately.
TheCU->addUInt(ScopeDIE, dwarf::DW_AT_ranges, dwarf::DW_FORM_data4,
DebugRangeSymbols.size()
* Asm->getDataLayout().getPointerSize());
DebugRangeSymbols.size() *
Asm->getDataLayout().getPointerSize());
for (SmallVectorImpl<InsnRange>::const_iterator RI = Ranges.begin(),
RE = Ranges.end(); RI != RE; ++RI) {
RE = Ranges.end();
RI != RE; ++RI) {
DebugRangeSymbols.push_back(getLabelBeforeInsn(RI->first));
DebugRangeSymbols.push_back(getLabelAfterInsn(RI->second));
}
@@ -526,10 +527,11 @@ DIE *DwarfDebug::constructInlinedScopeDIE(CompileUnit *TheCU,
// .debug_range as a uint, size 4, for now. emitDIE will handle
// DW_AT_ranges appropriately.
TheCU->addUInt(ScopeDIE, dwarf::DW_AT_ranges, dwarf::DW_FORM_data4,
DebugRangeSymbols.size()
* Asm->getDataLayout().getPointerSize());
DebugRangeSymbols.size() *
Asm->getDataLayout().getPointerSize());
for (SmallVectorImpl<InsnRange>::const_iterator RI = Ranges.begin(),
RE = Ranges.end(); RI != RE; ++RI) {
RE = Ranges.end();
RI != RE; ++RI) {
DebugRangeSymbols.push_back(getLabelBeforeInsn(RI->first));
DebugRangeSymbols.push_back(getLabelAfterInsn(RI->second));
}
@@ -578,16 +580,19 @@ DIE *DwarfDebug::createScopeChildrenDIE(CompileUnit *TheCU, LexicalScope *Scope,
if (DIE *Arg =
TheCU->constructVariableDIE(*ArgDV, Scope->isAbstractScope())) {
Children.push_back(Arg);
if (ArgDV->isObjectPointer()) ObjectPointer = Arg;
if (ArgDV->isObjectPointer())
ObjectPointer = Arg;
}
// Collect lexical scope children first.
const SmallVectorImpl<DbgVariable *> &Variables =ScopeVariables.lookup(Scope);
const SmallVectorImpl<DbgVariable *> &Variables =
ScopeVariables.lookup(Scope);
for (unsigned i = 0, N = Variables.size(); i < N; ++i)
if (DIE *Variable =
TheCU->constructVariableDIE(*Variables[i], Scope->isAbstractScope())) {
if (DIE *Variable = TheCU->constructVariableDIE(*Variables[i],
Scope->isAbstractScope())) {
Children.push_back(Variable);
if (Variables[i]->isObjectPointer()) ObjectPointer = Variable;
if (Variables[i]->isObjectPointer())
ObjectPointer = Variable;
}
const SmallVectorImpl<LexicalScope *> &Scopes = Scope->getChildren();
for (unsigned j = 0, M = Scopes.size(); j < M; ++j)
@@ -634,8 +639,10 @@ DIE *DwarfDebug::constructScopeDIE(CompileUnit *TheCU, LexicalScope *Scope) {
// There is no need to emit empty lexical block DIE.
std::pair<ImportedEntityMap::const_iterator,
ImportedEntityMap::const_iterator> Range = std::equal_range(
ScopesWithImportedEntities.begin(), ScopesWithImportedEntities.end(),
ImportedEntityMap::const_iterator> Range =
std::equal_range(
ScopesWithImportedEntities.begin(),
ScopesWithImportedEntities.end(),
std::pair<const MDNode *, const MDNode *>(DS, (const MDNode *)0),
less_first());
if (Children.empty() && Range.first == Range.second)
@@ -658,7 +665,8 @@ DIE *DwarfDebug::constructScopeDIE(CompileUnit *TheCU, LexicalScope *Scope) {
// Add children
for (SmallVectorImpl<DIE *>::iterator I = Children.begin(),
E = Children.end(); I != E; ++I)
E = Children.end();
I != E; ++I)
ScopeDIE->addChild(*I);
if (DS.isSubprogram() && ObjectPointer != NULL)
@@ -674,8 +682,8 @@ DIE *DwarfDebug::constructScopeDIE(CompileUnit *TheCU, LexicalScope *Scope) {
// If none currently exists, create a new id and insert it in the
// SourceIds map. This can update DirectoryNames and SourceFileNames maps
// as well.
unsigned DwarfDebug::getOrCreateSourceID(StringRef FileName,
StringRef DirName, unsigned CUID) {
unsigned DwarfDebug::getOrCreateSourceID(StringRef FileName, StringRef DirName,
unsigned CUID) {
// If we use .loc in assembly, we can't separate .file entries according to
// compile units. Thus all files will belong to the default compile unit.
@@ -741,8 +749,8 @@ CompileUnit *DwarfDebug::constructCompileUnit(DICompileUnit DIUnit) {
NewCU->addLabelAddress(Die, dwarf::DW_AT_low_pc, NULL);
// Define start line table label for each Compile Unit.
MCSymbol *LineTableStartSym = Asm->GetTempSymbol("line_table_start",
NewCU->getUniqueID());
MCSymbol *LineTableStartSym =
Asm->GetTempSymbol("line_table_start", NewCU->getUniqueID());
Asm->OutStreamer.getContext().setMCLineTableSymbol(LineTableStartSym,
NewCU->getUniqueID());
@@ -776,25 +784,23 @@ CompileUnit *DwarfDebug::constructCompileUnit(DICompileUnit DIUnit) {
// emit it here if we don't have a skeleton CU for split dwarf.
if (GenerateGnuPubSections) {
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
NewCU->addLabel(Die, dwarf::DW_AT_GNU_pubnames,
dwarf::DW_FORM_sec_offset,
Asm->GetTempSymbol("gnu_pubnames",
NewCU->getUniqueID()));
NewCU->addLabel(
Die, dwarf::DW_AT_GNU_pubnames, dwarf::DW_FORM_sec_offset,
Asm->GetTempSymbol("gnu_pubnames", NewCU->getUniqueID()));
else
NewCU->addDelta(Die, dwarf::DW_AT_GNU_pubnames, dwarf::DW_FORM_data4,
Asm->GetTempSymbol("gnu_pubnames",
NewCU->getUniqueID()),
NewCU->addDelta(
Die, dwarf::DW_AT_GNU_pubnames, dwarf::DW_FORM_data4,
Asm->GetTempSymbol("gnu_pubnames", NewCU->getUniqueID()),
DwarfGnuPubNamesSectionSym);
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
NewCU->addLabel(Die, dwarf::DW_AT_GNU_pubtypes,
dwarf::DW_FORM_sec_offset,
Asm->GetTempSymbol("gnu_pubtypes",
NewCU->getUniqueID()));
NewCU->addLabel(
Die, dwarf::DW_AT_GNU_pubtypes, dwarf::DW_FORM_sec_offset,
Asm->GetTempSymbol("gnu_pubtypes", NewCU->getUniqueID()));
else
NewCU->addDelta(Die, dwarf::DW_AT_GNU_pubtypes, dwarf::DW_FORM_data4,
Asm->GetTempSymbol("gnu_pubtypes",
NewCU->getUniqueID()),
NewCU->addDelta(
Die, dwarf::DW_AT_GNU_pubtypes, dwarf::DW_FORM_data4,
Asm->GetTempSymbol("gnu_pubtypes", NewCU->getUniqueID()),
DwarfGnuPubTypesSectionSym);
}
}
@@ -948,12 +954,14 @@ void DwarfDebug::beginModule() {
void DwarfDebug::computeInlinedDIEs() {
// Attach DW_AT_inline attribute with inlined subprogram DIEs.
for (SmallPtrSet<DIE *, 4>::iterator AI = InlinedSubprogramDIEs.begin(),
AE = InlinedSubprogramDIEs.end(); AI != AE; ++AI) {
AE = InlinedSubprogramDIEs.end();
AI != AE; ++AI) {
DIE *ISP = *AI;
FirstCU->addUInt(ISP, dwarf::DW_AT_inline, None, dwarf::DW_INL_inlined);
}
for (DenseMap<const MDNode *, DIE *>::iterator AI = AbstractSPDies.begin(),
AE = AbstractSPDies.end(); AI != AE; ++AI) {
AE = AbstractSPDies.end();
AI != AE; ++AI) {
DIE *ISP = AI->second;
if (InlinedSubprogramDIEs.count(ISP))
continue;
@@ -993,8 +1001,7 @@ void DwarfDebug::collectDeadVariables() {
if (!DV.isVariable())
continue;
DbgVariable NewVar(DV, NULL, this);
if (DIE *VariableDIE =
SPCU->constructVariableDIE(NewVar, false))
if (DIE *VariableDIE = SPCU->constructVariableDIE(NewVar, false))
SPDIE->addChild(VariableDIE);
}
}
@@ -1130,8 +1137,10 @@ void DwarfDebug::endSections() {
if (Section) {
// We can't call MCSection::getLabelEndName, as it's only safe to do so
// if we know the section name up-front. For user-created sections, the resulting
// label may not be valid to use as a label. (section names can use a greater
// if we know the section name up-front. For user-created sections, the
// resulting
// label may not be valid to use as a label. (section names can use a
// greater
// set of characters on some systems)
Sym = Asm->GetTempSymbol("debug_end", ID);
Asm->OutStreamer.SwitchSection(Section);
@@ -1146,7 +1155,8 @@ void DwarfDebug::endSections() {
// Emit all Dwarf sections that should come after the content.
void DwarfDebug::endModule() {
if (!FirstCU) return;
if (!FirstCU)
return;
// End any existing sections.
// TODO: Does this need to happen?
@@ -1205,7 +1215,6 @@ void DwarfDebug::endModule() {
// Emit DWO addresses.
InfoHolder.emitAddresses(Asm->getObjFileLowering().getDwarfAddrSection());
}
// Emit info into the dwarf accelerator table sections.
@@ -1225,11 +1234,13 @@ void DwarfDebug::endModule() {
// clean up.
SPMap.clear();
for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
E = CUMap.end(); I != E; ++I)
E = CUMap.end();
I != E; ++I)
delete I->second;
for (SmallVectorImpl<CompileUnit *>::iterator I = SkeletonCUs.begin(),
E = SkeletonCUs.end(); I != E; ++I)
E = SkeletonCUs.end();
I != E; ++I)
delete *I;
// Reset these for the next Module if we have one.
@@ -1280,14 +1291,15 @@ bool DwarfDebug::addCurrentFnArgument(const MachineFunction *MF,
}
// Collect variable information from side table maintained by MMI.
void
DwarfDebug::collectVariableInfoFromMMITable(const MachineFunction *MF,
SmallPtrSet<const MDNode *, 16> &Processed) {
void DwarfDebug::collectVariableInfoFromMMITable(
const MachineFunction *MF, SmallPtrSet<const MDNode *, 16> &Processed) {
MachineModuleInfo::VariableDbgInfoMapTy &VMap = MMI->getVariableDbgInfo();
for (MachineModuleInfo::VariableDbgInfoMapTy::iterator VI = VMap.begin(),
VE = VMap.end(); VI != VE; ++VI) {
VE = VMap.end();
VI != VE; ++VI) {
const MDNode *Var = VI->first;
if (!Var) continue;
if (!Var)
continue;
Processed.insert(Var);
DIVariable DV(Var);
const std::pair<unsigned, DebugLoc> &VP = VI->second;
@@ -1312,8 +1324,8 @@ DwarfDebug::collectVariableInfoFromMMITable(const MachineFunction *MF,
// defined reg.
static bool isDbgValueInDefinedReg(const MachineInstr *MI) {
assert(MI->isDebugValue() && "Invalid DBG_VALUE machine instruction!");
return MI->getNumOperands() == 3 &&
MI->getOperand(0).isReg() && MI->getOperand(0).getReg() &&
return MI->getNumOperands() == 3 && MI->getOperand(0).isReg() &&
MI->getOperand(0).getReg() &&
(MI->getOperand(1).isImm() ||
(MI->getOperand(1).isReg() && MI->getOperand(1).getReg() == 0U));
}
@@ -1355,8 +1367,9 @@ DwarfDebug::collectVariableInfo(const MachineFunction *MF,
collectVariableInfoFromMMITable(MF, Processed);
for (SmallVectorImpl<const MDNode *>::const_iterator
UVI = UserVariables.begin(), UVE = UserVariables.end(); UVI != UVE;
++UVI) {
UVI = UserVariables.begin(),
UVE = UserVariables.end();
UVI != UVE; ++UVI) {
const MDNode *Var = *UVI;
if (Processed.count(Var))
continue;
@@ -1391,8 +1404,8 @@ DwarfDebug::collectVariableInfo(const MachineFunction *MF,
AbsVar->setMInsn(MInsn);
// Simplify ranges that are fully coalesced.
if (History.size() <= 1 || (History.size() == 2 &&
MInsn->isIdenticalTo(History.back()))) {
if (History.size() <= 1 ||
(History.size() == 2 && MInsn->isIdenticalTo(History.back()))) {
RegVar->setMInsn(MInsn);
continue;
}
@@ -1401,13 +1414,15 @@ DwarfDebug::collectVariableInfo(const MachineFunction *MF,
RegVar->setDotDebugLocOffset(DotDebugLocEntries.size());
for (SmallVectorImpl<const MachineInstr *>::const_iterator
HI = History.begin(), HE = History.end(); HI != HE; ++HI) {
HI = History.begin(),
HE = History.end();
HI != HE; ++HI) {
const MachineInstr *Begin = *HI;
assert(Begin->isDebugValue() && "Invalid History entry");
// Check if DBG_VALUE is truncating a range.
if (Begin->getNumOperands() > 1 && Begin->getOperand(0).isReg()
&& !Begin->getOperand(0).getReg())
if (Begin->getNumOperands() > 1 && Begin->getOperand(0).isReg() &&
!Begin->getOperand(0).getReg())
continue;
// Compute the range for a register location.
@@ -1433,8 +1448,8 @@ DwarfDebug::collectVariableInfo(const MachineFunction *MF,
}
// The value is valid until the next DBG_VALUE or clobber.
DotDebugLocEntries.push_back(getDebugLocEntry(Asm, FLabel, SLabel,
Begin));
DotDebugLocEntries.push_back(
getDebugLocEntry(Asm, FLabel, SLabel, Begin));
}
DotDebugLocEntries.push_back(DotDebugLocEntry());
}
@@ -1543,8 +1558,10 @@ void DwarfDebug::identifyScopeMarkers() {
const SmallVectorImpl<LexicalScope *> &Children = S->getChildren();
if (!Children.empty())
for (SmallVectorImpl<LexicalScope *>::const_iterator SI = Children.begin(),
SE = Children.end(); SI != SE; ++SI)
for (SmallVectorImpl<LexicalScope *>::const_iterator
SI = Children.begin(),
SE = Children.end();
SI != SE; ++SI)
WorkList.push_back(*SI);
if (S->isAbstractScope())
@@ -1554,7 +1571,8 @@ void DwarfDebug::identifyScopeMarkers() {
if (Ranges.empty())
continue;
for (SmallVectorImpl<InsnRange>::const_iterator RI = Ranges.begin(),
RE = Ranges.end(); RI != RE; ++RI) {
RE = Ranges.end();
RI != RE; ++RI) {
assert(RI->first && "InsnRange does not have first instruction!");
assert(RI->second && "InsnRange does not have second instruction!");
requestLabelBeforeInsn(RI->first);
@@ -1817,11 +1835,11 @@ void DwarfDebug::addScopeVariable(LexicalScope *LS, DbgVariable *Var) {
// Gather and emit post-function debug information.
void DwarfDebug::endFunction(const MachineFunction *MF) {
if (!MMI->hasDebugInfo() || LScopes.empty()) return;
if (!MMI->hasDebugInfo() || LScopes.empty())
return;
// Define end label for subprogram.
FunctionEndSym = Asm->GetTempSymbol("func_end",
Asm->getFunctionNumber());
FunctionEndSym = Asm->GetTempSymbol("func_end", Asm->getFunctionNumber());
// Assumes in correct section after the entry point.
Asm->OutStreamer.EmitLabel(FunctionEndSym);
// Set DwarfCompileUnitID in MCContext to default value.
@@ -1866,8 +1884,9 @@ void DwarfDebug::endFunction(const MachineFunction *MF) {
TheCU->addFlag(CurFnDIE, dwarf::DW_AT_APPLE_omit_frame_ptr);
// Clear debug info
for (ScopeVariablesMap::iterator
I = ScopeVariables.begin(), E = ScopeVariables.end(); I != E; ++I)
for (ScopeVariablesMap::iterator I = ScopeVariables.begin(),
E = ScopeVariables.end();
I != E; ++I)
DeleteContainerPointers(I->second);
ScopeVariables.clear();
DeleteContainerPointers(CurrentFnArguments);
@@ -1912,8 +1931,8 @@ void DwarfDebug::recordSourceLine(unsigned Line, unsigned Col, const MDNode *S,
} else
llvm_unreachable("Unexpected scope info");
Src = getOrCreateSourceID(Fn, Dir,
Asm->OutStreamer.getContext().getDwarfCompileUnitID());
Src = getOrCreateSourceID(
Fn, Dir, Asm->OutStreamer.getContext().getDwarfCompileUnitID());
}
Asm->OutStreamer.EmitDwarfLocDirective(Src, Line, Col, Flags, 0, 0, Fn);
}
@@ -1924,8 +1943,7 @@ void DwarfDebug::recordSourceLine(unsigned Line, unsigned Col, const MDNode *S,
// Compute the size and offset of a DIE. The offset is relative to start of the
// CU. It returns the offset after laying out the DIE.
unsigned
DwarfUnits::computeSizeAndOffset(DIE *Die, unsigned Offset) {
unsigned DwarfUnits::computeSizeAndOffset(DIE *Die, unsigned Offset) {
// Get the children.
const std::vector<DIE *> &Children = Die->getChildren();
@@ -1973,8 +1991,8 @@ void DwarfUnits::computeSizeAndOffsets() {
// Iterate over each compile unit and set the size and offsets for each
// DIE within each compile unit. All offsets are CU relative.
for (SmallVectorImpl<CompileUnit *>::iterator I = CUs.begin(),
E = CUs.end(); I != E; ++I) {
for (SmallVectorImpl<CompileUnit *>::iterator I = CUs.begin(), E = CUs.end();
I != E; ++I) {
(*I)->setDebugInfoOffset(SecOffset);
// CU-relative offset is reset to 0 here.
@@ -1998,9 +2016,8 @@ void DwarfDebug::emitSectionLabels() {
DwarfAbbrevSectionSym =
emitSectionSym(Asm, TLOF.getDwarfAbbrevSection(), "section_abbrev");
if (useSplitDwarf())
DwarfAbbrevDWOSectionSym =
emitSectionSym(Asm, TLOF.getDwarfAbbrevDWOSection(),
"section_abbrev_dwo");
DwarfAbbrevDWOSectionSym = emitSectionSym(
Asm, TLOF.getDwarfAbbrevDWOSection(), "section_abbrev_dwo");
emitSectionSym(Asm, TLOF.getDwarfARangesSection());
if (const MCSection *MacroInfo = TLOF.getDwarfMacroInfoSection())
@@ -2027,11 +2044,11 @@ void DwarfDebug::emitSectionLabels() {
DwarfAddrSectionSym =
emitSectionSym(Asm, TLOF.getDwarfAddrSection(), "addr_sec");
}
DwarfDebugRangeSectionSym = emitSectionSym(Asm, TLOF.getDwarfRangesSection(),
"debug_range");
DwarfDebugRangeSectionSym =
emitSectionSym(Asm, TLOF.getDwarfRangesSection(), "debug_range");
DwarfDebugLocSectionSym = emitSectionSym(Asm, TLOF.getDwarfLocSection(),
"section_debug_loc");
DwarfDebugLocSectionSym =
emitSectionSym(Asm, TLOF.getDwarfLocSection(), "section_debug_loc");
TextSectionSym = emitSectionSym(Asm, TLOF.getTextSection(), "text_begin");
emitSectionSym(Asm, TLOF.getDataSection());
@@ -2101,14 +2118,10 @@ void DwarfDebug::emitDIE(DIE *Die, ArrayRef<DIEAbbrev *> Abbrevs) {
DIEInteger *V = cast<DIEInteger>(Values[i]);
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections()) {
Asm->EmitLabelPlusOffset(DwarfDebugRangeSectionSym,
V->getValue(),
4);
Asm->EmitLabelPlusOffset(DwarfDebugRangeSectionSym, V->getValue(), 4);
} else {
Asm->EmitLabelOffsetDifference(DwarfDebugRangeSectionSym,
V->getValue(),
DwarfDebugRangeSectionSym,
4);
Asm->EmitLabelOffsetDifference(DwarfDebugRangeSectionSym, V->getValue(),
DwarfDebugRangeSectionSym, 4);
}
break;
}
@@ -2153,19 +2166,17 @@ void DwarfDebug::emitDIE(DIE *Die, ArrayRef<DIEAbbrev *> Abbrevs) {
// Emit the various dwarf units to the unit section USection with
// the abbreviations going into ASection.
void DwarfUnits::emitUnits(DwarfDebug *DD,
const MCSection *USection,
void DwarfUnits::emitUnits(DwarfDebug *DD, const MCSection *USection,
const MCSection *ASection,
const MCSymbol *ASectionSym) {
Asm->OutStreamer.SwitchSection(USection);
for (SmallVectorImpl<CompileUnit *>::iterator I = CUs.begin(),
E = CUs.end(); I != E; ++I) {
for (SmallVectorImpl<CompileUnit *>::iterator I = CUs.begin(), E = CUs.end();
I != E; ++I) {
CompileUnit *TheCU = *I;
DIE *Die = TheCU->getCUDie();
// Emit the compile units header.
Asm->OutStreamer
.EmitLabel(Asm->GetTempSymbol(USection->getLabelBeginName(),
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol(USection->getLabelBeginName(),
TheCU->getUniqueID()));
// Emit size of content not including length itself
@@ -2175,8 +2186,8 @@ void DwarfUnits::emitUnits(DwarfDebug *DD,
TheCU->emitHeader(ASection, ASectionSym);
DD->emitDIE(Die, Abbreviations);
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol(USection->getLabelEndName(),
TheCU->getUniqueID()));
Asm->OutStreamer.EmitLabel(
Asm->GetTempSymbol(USection->getLabelEndName(), TheCU->getUniqueID()));
}
}
@@ -2241,7 +2252,8 @@ void DwarfDebug::emitEndOfLineMatrix(unsigned SectionEnd) {
Asm->OutStreamer.AddComment("Section end label");
Asm->OutStreamer.EmitSymbolValue(Asm->GetTempSymbol("section_end",SectionEnd),
Asm->OutStreamer.EmitSymbolValue(
Asm->GetTempSymbol("section_end", SectionEnd),
Asm->getDataLayout().getPointerSize());
// Mark end of matrix.
@@ -2253,18 +2265,21 @@ void DwarfDebug::emitEndOfLineMatrix(unsigned SectionEnd) {
// Emit visible names into a hashed accelerator table section.
void DwarfDebug::emitAccelNames() {
DwarfAccelTable AT(DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset,
dwarf::DW_FORM_data4));
DwarfAccelTable AT(
DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset, dwarf::DW_FORM_data4));
for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
E = CUMap.end(); I != E; ++I) {
E = CUMap.end();
I != E; ++I) {
CompileUnit *TheCU = I->second;
const StringMap<std::vector<DIE *> > &Names = TheCU->getAccelNames();
for (StringMap<std::vector<DIE*> >::const_iterator
GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
for (StringMap<std::vector<DIE *> >::const_iterator GI = Names.begin(),
GE = Names.end();
GI != GE; ++GI) {
StringRef Name = GI->getKey();
const std::vector<DIE *> &Entities = GI->second;
for (std::vector<DIE *>::const_iterator DI = Entities.begin(),
DE = Entities.end(); DI != DE; ++DI)
DE = Entities.end();
DI != DE; ++DI)
AT.AddName(Name, (*DI));
}
}
@@ -2282,25 +2297,28 @@ void DwarfDebug::emitAccelNames() {
// Emit objective C classes and categories into a hashed accelerator table
// section.
void DwarfDebug::emitAccelObjC() {
DwarfAccelTable AT(DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset,
dwarf::DW_FORM_data4));
DwarfAccelTable AT(
DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset, dwarf::DW_FORM_data4));
for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
E = CUMap.end(); I != E; ++I) {
E = CUMap.end();
I != E; ++I) {
CompileUnit *TheCU = I->second;
const StringMap<std::vector<DIE *> > &Names = TheCU->getAccelObjC();
for (StringMap<std::vector<DIE*> >::const_iterator
GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
for (StringMap<std::vector<DIE *> >::const_iterator GI = Names.begin(),
GE = Names.end();
GI != GE; ++GI) {
StringRef Name = GI->getKey();
const std::vector<DIE *> &Entities = GI->second;
for (std::vector<DIE *>::const_iterator DI = Entities.begin(),
DE = Entities.end(); DI != DE; ++DI)
DE = Entities.end();
DI != DE; ++DI)
AT.AddName(Name, (*DI));
}
}
AT.FinalizeTable(Asm, "ObjC");
Asm->OutStreamer.SwitchSection(Asm->getObjFileLowering()
.getDwarfAccelObjCSection());
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfAccelObjCSection());
MCSymbol *SectionBegin = Asm->GetTempSymbol("objc_begin");
Asm->OutStreamer.EmitLabel(SectionBegin);
@@ -2310,25 +2328,28 @@ void DwarfDebug::emitAccelObjC() {
// Emit namespace dies into a hashed accelerator table.
void DwarfDebug::emitAccelNamespaces() {
DwarfAccelTable AT(DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset,
dwarf::DW_FORM_data4));
DwarfAccelTable AT(
DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset, dwarf::DW_FORM_data4));
for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
E = CUMap.end(); I != E; ++I) {
E = CUMap.end();
I != E; ++I) {
CompileUnit *TheCU = I->second;
const StringMap<std::vector<DIE *> > &Names = TheCU->getAccelNamespace();
for (StringMap<std::vector<DIE*> >::const_iterator
GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
for (StringMap<std::vector<DIE *> >::const_iterator GI = Names.begin(),
GE = Names.end();
GI != GE; ++GI) {
StringRef Name = GI->getKey();
const std::vector<DIE *> &Entities = GI->second;
for (std::vector<DIE *>::const_iterator DI = Entities.begin(),
DE = Entities.end(); DI != DE; ++DI)
DE = Entities.end();
DI != DE; ++DI)
AT.AddName(Name, (*DI));
}
}
AT.FinalizeTable(Asm, "namespac");
Asm->OutStreamer.SwitchSection(Asm->getObjFileLowering()
.getDwarfAccelNamespaceSection());
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfAccelNamespaceSection());
MCSymbol *SectionBegin = Asm->GetTempSymbol("namespac_begin");
Asm->OutStreamer.EmitLabel(SectionBegin);
@@ -2339,31 +2360,36 @@ void DwarfDebug::emitAccelNamespaces() {
// Emit type dies into a hashed accelerator table.
void DwarfDebug::emitAccelTypes() {
std::vector<DwarfAccelTable::Atom> Atoms;
Atoms.push_back(DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset,
dwarf::DW_FORM_data4));
Atoms.push_back(DwarfAccelTable::Atom(dwarf::DW_ATOM_die_tag,
dwarf::DW_FORM_data2));
Atoms.push_back(DwarfAccelTable::Atom(dwarf::DW_ATOM_type_flags,
dwarf::DW_FORM_data1));
Atoms.push_back(
DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset, dwarf::DW_FORM_data4));
Atoms.push_back(
DwarfAccelTable::Atom(dwarf::DW_ATOM_die_tag, dwarf::DW_FORM_data2));
Atoms.push_back(
DwarfAccelTable::Atom(dwarf::DW_ATOM_type_flags, dwarf::DW_FORM_data1));
DwarfAccelTable AT(Atoms);
for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
E = CUMap.end(); I != E; ++I) {
E = CUMap.end();
I != E; ++I) {
CompileUnit *TheCU = I->second;
const StringMap<std::vector<std::pair<DIE*, unsigned > > > &Names
= TheCU->getAccelTypes();
const StringMap<std::vector<std::pair<DIE *, unsigned> > > &Names =
TheCU->getAccelTypes();
for (StringMap<std::vector<std::pair<DIE *, unsigned> > >::const_iterator
GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
GI = Names.begin(),
GE = Names.end();
GI != GE; ++GI) {
StringRef Name = GI->getKey();
const std::vector<std::pair<DIE *, unsigned> > &Entities = GI->second;
for (std::vector<std::pair<DIE *, unsigned> >::const_iterator DI
= Entities.begin(), DE = Entities.end(); DI !=DE; ++DI)
for (std::vector<std::pair<DIE *, unsigned> >::const_iterator
DI = Entities.begin(),
DE = Entities.end();
DI != DE; ++DI)
AT.AddName(Name, (*DI).first, (*DI).second);
}
}
AT.FinalizeTable(Asm, "types");
Asm->OutStreamer.SwitchSection(Asm->getObjFileLowering()
.getDwarfAccelTypesSection());
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfAccelTypesSection());
MCSymbol *SectionBegin = Asm->GetTempSymbol("types_begin");
Asm->OutStreamer.EmitLabel(SectionBegin);
@@ -2446,8 +2472,8 @@ void DwarfDebug::emitDebugPubNames(bool GnuStyle) {
// Emit a label so we can reference the beginning of this pubname section.
if (GnuStyle)
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("gnu_pubnames",
TheCU->getUniqueID()));
Asm->OutStreamer.EmitLabel(
Asm->GetTempSymbol("gnu_pubnames", TheCU->getUniqueID()));
// Emit the header.
Asm->OutStreamer.AddComment("Length of Public Names Info");
@@ -2470,8 +2496,9 @@ void DwarfDebug::emitDebugPubNames(bool GnuStyle) {
// Emit the pubnames for this compilation unit.
const StringMap<DIE *> &Globals = TheCU->getGlobalNames();
for (StringMap<DIE*>::const_iterator
GI = Globals.begin(), GE = Globals.end(); GI != GE; ++GI) {
for (StringMap<DIE *>::const_iterator GI = Globals.begin(),
GE = Globals.end();
GI != GE; ++GI) {
const char *Name = GI->getKeyData();
DIE *Entity = GI->second;
@@ -2512,8 +2539,8 @@ void DwarfDebug::emitDebugPubTypes(bool GnuStyle) {
// Emit a label so we can reference the beginning of this pubtype section.
if (GnuStyle)
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("gnu_pubtypes",
TheCU->getUniqueID()));
Asm->OutStreamer.EmitLabel(
Asm->GetTempSymbol("gnu_pubtypes", TheCU->getUniqueID()));
// Emit the header.
Asm->OutStreamer.AddComment("Length of Public Types Info");
@@ -2577,18 +2604,21 @@ void DwarfUnits::emitStrings(const MCSection *StrSection,
const MCSection *OffsetSection = NULL,
const MCSymbol *StrSecSym = NULL) {
if (StringPool.empty()) return;
if (StringPool.empty())
return;
// Start the dwarf str section.
Asm->OutStreamer.SwitchSection(StrSection);
// Get all of the string pool entries and put them in an array by their ID so
// we can sort them.
SmallVector<std::pair<unsigned,
StringMapEntry<std::pair<MCSymbol*, unsigned> >*>, 64> Entries;
SmallVector<
std::pair<unsigned, StringMapEntry<std::pair<MCSymbol *, unsigned> > *>,
64> Entries;
for (StringMap<std::pair<MCSymbol *, unsigned> >::iterator
I = StringPool.begin(), E = StringPool.end();
I = StringPool.begin(),
E = StringPool.end();
I != E; ++I)
Entries.push_back(std::make_pair(I->second.second, &*I));
@@ -2599,7 +2629,8 @@ void DwarfUnits::emitStrings(const MCSection *StrSection,
Asm->OutStreamer.EmitLabel(Entries[i].second->getValue().first);
// Emit the string itself with a terminating null byte.
Asm->OutStreamer.EmitBytes(StringRef(Entries[i].second->getKeyData(),
Asm->OutStreamer.EmitBytes(
StringRef(Entries[i].second->getKeyData(),
Entries[i].second->getKeyLength() + 1));
}
@@ -2618,7 +2649,8 @@ void DwarfUnits::emitStrings(const MCSection *StrSection,
// Emit strings into a string section.
void DwarfUnits::emitAddresses(const MCSection *AddrSection) {
if (AddressPool.empty()) return;
if (AddressPool.empty())
return;
// Start the dwarf addr section.
Asm->OutStreamer.SwitchSection(AddrSection);
@@ -2638,7 +2670,6 @@ void DwarfUnits::emitAddresses(const MCSection *AddrSection) {
else
Asm->OutStreamer.EmitIntValue(0, Asm->getDataLayout().getPointerSize());
}
}
// Emit visible names into a debug str section.
@@ -2653,7 +2684,8 @@ void DwarfDebug::emitDebugLoc() {
return;
for (SmallVectorImpl<DotDebugLocEntry>::iterator
I = DotDebugLocEntries.begin(), E = DotDebugLocEntries.end();
I = DotDebugLocEntries.begin(),
E = DotDebugLocEntries.end();
I != E; ++I) {
DotDebugLocEntry &Entry = *I;
if (I + 1 != DotDebugLocEntries.end())
@@ -2667,10 +2699,12 @@ void DwarfDebug::emitDebugLoc() {
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("debug_loc", 0));
unsigned index = 1;
for (SmallVectorImpl<DotDebugLocEntry>::iterator
I = DotDebugLocEntries.begin(), E = DotDebugLocEntries.end();
I = DotDebugLocEntries.begin(),
E = DotDebugLocEntries.end();
I != E; ++I, ++index) {
DotDebugLocEntry &Entry = *I;
if (Entry.isMerged()) continue;
if (Entry.isMerged())
continue;
if (Entry.isEmpty()) {
Asm->OutStreamer.EmitIntValue(0, Size);
Asm->OutStreamer.EmitIntValue(0, Size);
@@ -2686,9 +2720,8 @@ void DwarfDebug::emitDebugLoc() {
Asm->OutStreamer.EmitLabel(begin);
if (Entry.isInt()) {
DIBasicType BTy(DV.getType());
if (BTy.Verify() &&
(BTy.getEncoding() == dwarf::DW_ATE_signed
|| BTy.getEncoding() == dwarf::DW_ATE_signed_char)) {
if (BTy.Verify() && (BTy.getEncoding() == dwarf::DW_ATE_signed ||
BTy.getEncoding() == dwarf::DW_ATE_signed_char)) {
Asm->OutStreamer.AddComment("DW_OP_consts");
Asm->EmitInt8(dwarf::DW_OP_consts);
Asm->EmitSLEB128(Entry.getInt());
@@ -2777,8 +2810,8 @@ struct ArangeSpan {
// address we can tie back to a CU.
void DwarfDebug::emitDebugARanges() {
// Start the dwarf aranges section.
Asm->OutStreamer
.SwitchSection(Asm->getObjFileLowering().getDwarfARangesSection());
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfARangesSection());
typedef DenseMap<CompileUnit *, std::vector<ArangeSpan> > SpansType;
@@ -2857,11 +2890,11 @@ void DwarfDebug::emitDebugARanges() {
std::vector<ArangeSpan> &List = Spans[CU];
// Emit size of content not including length itself.
unsigned ContentSize
= sizeof(int16_t) // DWARF ARange version number
+ sizeof(int32_t) // Offset of CU in the .debug_info section
+ sizeof(int8_t) // Pointer Size (in bytes)
+ sizeof(int8_t); // Segment Size (in bytes)
unsigned ContentSize =
sizeof(int16_t) + // DWARF ARange version number
sizeof(int32_t) + // Offset of CU in the .debug_info section
sizeof(int8_t) + // Pointer Size (in bytes)
sizeof(int8_t); // Segment Size (in bytes)
unsigned TupleSize = PtrSize * 2;
@@ -2917,11 +2950,12 @@ void DwarfDebug::emitDebugARanges() {
// Emit visible names into a debug ranges section.
void DwarfDebug::emitDebugRanges() {
// Start the dwarf ranges section.
Asm->OutStreamer
.SwitchSection(Asm->getObjFileLowering().getDwarfRangesSection());
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfRangesSection());
unsigned char Size = Asm->getDataLayout().getPointerSize();
for (SmallVectorImpl<const MCSymbol *>::iterator
I = DebugRangeSymbols.begin(), E = DebugRangeSymbols.end();
I = DebugRangeSymbols.begin(),
E = DebugRangeSymbols.end();
I != E; ++I) {
if (*I)
Asm->OutStreamer.EmitSymbolValue(const_cast<MCSymbol *>(*I), Size);
@@ -2959,8 +2993,8 @@ CompileUnit *DwarfDebug::constructSkeletonCU(const CompileUnit *CU) {
NewCU->addLabel(Die, dwarf::DW_AT_GNU_addr_base, dwarf::DW_FORM_sec_offset,
DwarfAddrSectionSym);
else
NewCU->addUInt(Die, dwarf::DW_AT_GNU_addr_base,
dwarf::DW_FORM_sec_offset, 0);
NewCU->addUInt(Die, dwarf::DW_AT_GNU_addr_base, dwarf::DW_FORM_sec_offset,
0);
// 2.17.1 requires that we use DW_AT_low_pc for a single entry point
// into an entity. We're using 0, or a NULL label for this.
@@ -3040,8 +3074,8 @@ void DwarfDebug::emitDebugAbbrevDWO() {
// sections.
void DwarfDebug::emitDebugStrDWO() {
assert(useSplitDwarf() && "No split dwarf?");
const MCSection *OffSec = Asm->getObjFileLowering()
.getDwarfStrOffDWOSection();
const MCSection *OffSec =
Asm->getObjFileLowering().getDwarfStrOffDWOSection();
const MCSymbol *StrSym = DwarfStrSectionSym;
InfoHolder.emitStrings(Asm->getObjFileLowering().getDwarfStrDWOSection(),
OffSec, StrSym);