void DWARFUnit::collectAddressRanges(DWARFAddressRangesVector &CURanges) {
const auto *U = getUnitDIE();
if (U == nullptr)
return;
// First, check if unit DIE describes address ranges for the whole unit.
const auto &CUDIERanges = U->getAddressRanges(this);
if (!CUDIERanges.empty()) {
CURanges.insert(CURanges.end(), CUDIERanges.begin(), CUDIERanges.end());
return;
}
// This function is usually called if there in no .debug_aranges section
// in order to produce a compile unit level set of address ranges that
// is accurate. If the DIEs weren't parsed, then we don't want all dies for
// all compile units to stay loaded when they weren't needed. So we can end
// up parsing the DWARF and then throwing them all away to keep memory usage
// down.
const bool ClearDIEs = extractDIEsIfNeeded(false) > 1;
DieArray[0].collectChildrenAddressRanges(this, CURanges);
// Collect address ranges from DIEs in .dwo if necessary.
bool DWOCreated = parseDWO();
if (DWO.get())
DWO->getUnit()->collectAddressRanges(CURanges);
if (DWOCreated)
DWO.reset();
// Keep memory down by clearing DIEs if this generate function
// caused them to be parsed.
if (ClearDIEs)
clearDIEs(true);
}
void
DWARFDie::collectChildrenAddressRanges(DWARFAddressRangesVector& Ranges) const {
if (isNULL())
return;
if (isSubprogramDIE()) {
const auto &DIERanges = getAddressRanges();
Ranges.insert(Ranges.end(), DIERanges.begin(), DIERanges.end());
}
for (auto Child: children())
Child.collectChildrenAddressRanges(Ranges);
}
void DWARFDebugInfoEntryMinimal::collectChildrenAddressRanges(
const DWARFUnit *U, DWARFAddressRangesVector& Ranges) const {
if (isNULL())
return;
if (isSubprogramDIE()) {
const auto &DIERanges = getAddressRanges(U);
Ranges.insert(Ranges.end(), DIERanges.begin(), DIERanges.end());
}
const DWARFDebugInfoEntryMinimal *Child = getFirstChild();
while (Child) {
Child->collectChildrenAddressRanges(U, Ranges);
Child = Child->getSibling();
}
}
void DWARFDie::collectChildrenAddressRanges(
DWARFAddressRangesVector &Ranges) const {
if (isNULL())
return;
if (isSubprogramDIE()) {
if (auto DIERangesOrError = getAddressRanges())
Ranges.insert(Ranges.end(), DIERangesOrError.get().begin(),
DIERangesOrError.get().end());
else
llvm::consumeError(DIERangesOrError.takeError());
}
for (auto Child : children())
Child.collectChildrenAddressRanges(Ranges);
}
void DWARFUnit::collectAddressRanges(DWARFAddressRangesVector &CURanges) {
DWARFDie UnitDie = getUnitDIE();
if (!UnitDie)
return;
// First, check if unit DIE describes address ranges for the whole unit.
auto CUDIERangesOrError = UnitDie.getAddressRanges();
if (CUDIERangesOrError) {
if (!CUDIERangesOrError.get().empty()) {
CURanges.insert(CURanges.end(), CUDIERangesOrError.get().begin(),
CUDIERangesOrError.get().end());
return;
}
} else
WithColor::error() << "decoding address ranges: "
<< toString(CUDIERangesOrError.takeError()) << '\n';
// This function is usually called if there in no .debug_aranges section
// in order to produce a compile unit level set of address ranges that
// is accurate. If the DIEs weren't parsed, then we don't want all dies for
// all compile units to stay loaded when they weren't needed. So we can end
// up parsing the DWARF and then throwing them all away to keep memory usage
// down.
const bool ClearDIEs = extractDIEsIfNeeded(false) > 1;
getUnitDIE().collectChildrenAddressRanges(CURanges);
// Collect address ranges from DIEs in .dwo if necessary.
bool DWOCreated = parseDWO();
if (DWO)
DWO->collectAddressRanges(CURanges);
if (DWOCreated)
DWO.reset();
// Keep memory down by clearing DIEs if this generate function
// caused them to be parsed.
if (ClearDIEs)
clearDIEs(true);
}
