1 files changed, 11 insertions, 2 deletions

diff --git a/contrib/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h b/contrib/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h
index 40eb4434bd61..023a0f7b9fb2 100644
--- a/contrib/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h
+++ b/contrib/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h
@@ -31,6 +31,7 @@
 #include <cstdint>
 #include <memory>
 #include <vector>
+#include <map>
 
 namespace llvm {
 
@@ -134,6 +135,11 @@ class DWARFUnit {
   uint64_t BaseAddr;
   // The compile unit debug information entry items.
   std::vector<DWARFDebugInfoEntry> DieArray;
+
+  // Map from range's start address to end address and corresponding DIE.
+  // IntervalMap does not support range removal, as a result, we use the
+  // std::map::upper_bound for address range lookup.
+  std::map<uint64_t, std::pair<uint64_t, DWARFDie>> AddrDieMap;
   typedef iterator_range<std::vector<DWARFDebugInfoEntry>::iterator>
       die_iterator_range;
 
@@ -183,6 +189,9 @@ public:
     AddrOffsetSectionBase = Base;
   }
 
+  // Recursively update address to Die map.
+  void updateAddressDieMap(DWARFDie Die);
+
   void setRangesSection(StringRef RS, uint32_t Base) {
     RangeSection = RS;
     RangeSectionBase = Base;
@@ -339,10 +348,10 @@ private:
   /// it was actually constructed.
   bool parseDWO();
 
-  /// getSubprogramForAddress - Returns subprogram DIE with address range
+  /// getSubroutineForAddress - Returns subprogram DIE with address range
   /// encompassing the provided address. The pointer is alive as long as parsed
   /// compile unit DIEs are not cleared.
-  DWARFDie getSubprogramForAddress(uint64_t Address);
+  DWARFDie getSubroutineForAddress(uint64_t Address);
 };
 
 } // end namespace llvm