1 files changed, 40 insertions, 2 deletions
diff --git a/llvm/lib/DebugInfo/GSYM/GsymReader.cpp b/llvm/lib/DebugInfo/GSYM/GsymReader.cpp
index fa5476d..0a5bb7c 100644
--- a/llvm/lib/DebugInfo/GSYM/GsymReader.cpp
+++ b/llvm/lib/DebugInfo/GSYM/GsymReader.cpp
@@ -334,14 +334,52 @@ GsymReader::getFunctionInfoAtIndex(uint64_t Idx) const {
     return ExpectedData.takeError();
 }
 
-llvm::Expected<LookupResult> GsymReader::lookup(uint64_t Addr) const {
+llvm::Expected<LookupResult>
+GsymReader::lookup(uint64_t Addr,
+                   std::optional<DataExtractor> *MergedFunctionsData) const {
   uint64_t FuncStartAddr = 0;
   if (auto ExpectedData = getFunctionInfoDataForAddress(Addr, FuncStartAddr))
-    return FunctionInfo::lookup(*ExpectedData, *this, FuncStartAddr, Addr);
+    return FunctionInfo::lookup(*ExpectedData, *this, FuncStartAddr, Addr,
+                                MergedFunctionsData);
   else
     return ExpectedData.takeError();
 }
 
+llvm::Expected<std::vector<LookupResult>>
+GsymReader::lookupAll(uint64_t Addr) const {
+  std::vector<LookupResult> Results;
+  std::optional<DataExtractor> MergedFunctionsData;
+
+  // First perform a lookup to get the primary function info result.
+  auto MainResult = lookup(Addr, &MergedFunctionsData);
+  if (!MainResult)
+    return MainResult.takeError();
+
+  // Add the main result as the first entry.
+  Results.push_back(std::move(*MainResult));
+
+  // Now process any merged functions data that was found during the lookup.
+  if (MergedFunctionsData) {
+    // Get data extractors for each merged function.
+    auto ExpectedMergedFuncExtractors =
+        MergedFunctionsInfo::getFuncsDataExtractors(*MergedFunctionsData);
+    if (!ExpectedMergedFuncExtractors)
+      return ExpectedMergedFuncExtractors.takeError();
+
+    // Process each merged function data.
+    for (DataExtractor &MergedData : *ExpectedMergedFuncExtractors) {
+      if (auto FI = FunctionInfo::lookup(MergedData, *this,
+                                         MainResult->FuncRange.start(), Addr)) {
+        Results.push_back(std::move(*FI));
+      } else {
+        return FI.takeError();
+      }
+    }
+  }
+
+  return Results;
+}
+
 void GsymReader::dump(raw_ostream &OS) {
   const auto &Header = getHeader();
   // Dump the GSYM header.