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[DWARFLinker] Only extract unit DIEs when cloning clang modules #69495

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Merged
merged 1 commit into from
Oct 18, 2023
Merged

[DWARFLinker] Only extract unit DIEs when cloning clang modules #69495

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12 changes: 6 additions & 6 deletions llvm/lib/DWARFLinker/DWARFLinker.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2682,12 +2682,12 @@ Error DWARFLinker::link() {
continue;
}

// In a first phase, just read in the debug info and load all clang modules.
// Clone all the clang modules with requires extracting the DIE units. We
// don't need the full debug info until the Analyze phase.
OptContext.CompileUnits.reserve(
OptContext.File.Dwarf->getNumCompileUnits());

for (const auto &CU : OptContext.File.Dwarf->compile_units()) {
auto CUDie = CU->getUnitDIE(false);
auto CUDie = CU->getUnitDIE(/*ExtractUnitDIEOnly=*/true);
if (Options.Verbose) {
outs() << "Input compilation unit:";
DIDumpOptions DumpOpts;
Expand Down Expand Up @@ -2728,9 +2728,9 @@ Error DWARFLinker::link() {
return;

for (const auto &CU : Context.File.Dwarf->compile_units()) {
// The !isClangModuleRef condition effectively skips over fully resolved
// skeleton units.
auto CUDie = CU->getUnitDIE();
// Previously we only extracted the unit DIEs. We need the full debug info
// now.
auto CUDie = CU->getUnitDIE(/*ExtractUnitDIEOnly=*/false);
std::string PCMFile = getPCMFile(CUDie, Options.ObjectPrefixMap);

if (!CUDie || LLVM_UNLIKELY(Options.Update) ||
Expand Down