================
@@ -218,6 +219,104 @@ void DebugNamesDWARFIndex::GetCompleteObjCClass(
m_fallback.GetCompleteObjCClass(class_name, must_be_implementation,
callback);
}
+namespace {
+using Entry = llvm::DWARFDebugNames::Entry;
+
+/// If `entry` and all of its parents have an `IDX_parent`, use that
information
+/// to build and return a list of at most `max_parents` parent Entries.
+/// `entry` itself is not included in the list.
+/// If any parent does not have an `IDX_parent`, or the Entry data is
corrupted,
+/// nullopt is returned.
+static std::optional<llvm::SmallVector<Entry, 4>>
+getParentChain(Entry entry, uint32_t max_parents) {
+ llvm::SmallVector<Entry, 4> parent_entries;
+
+ do {
+ if (!entry.hasParentInformation())
+ return std::nullopt;
+
+ llvm::Expected<std::optional<Entry>> parent = entry.getParentDIEEntry();
+ if (!parent) { // Bad data.
----------------
adrian-prantl wrote:
comment should be on its own line.
https://github.com/llvm/llvm-project/pull/79932
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