1 files changed, 26 insertions, 0 deletions
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
index 24039eb3520..b88cc636d84 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDie.cpp
@@ -352,6 +352,32 @@ void DWARFDie::dump(raw_ostream &OS, unsigned RecurseDepth,
   }
 }
 
+void DWARFDie::getInlinedChainForAddress(
+    const uint64_t Address, SmallVectorImpl<DWARFDie> &InlinedChain) const {
+  if (isNULL())
+    return;
+  DWARFDie DIE(*this);
+  while (DIE) {
+    // Append current DIE to inlined chain only if it has correct tag
+    // (e.g. it is not a lexical block).
+    if (DIE.isSubroutineDIE())
+      InlinedChain.push_back(DIE);
+
+    // Try to get child which also contains provided address.
+    DWARFDie Child = DIE.getFirstChild();
+    while (Child) {
+      if (Child.addressRangeContainsAddress(Address)) {
+        // Assume there is only one such child.
+        break;
+      }
+      Child = Child.getSibling();
+    }
+    DIE = Child;
+  }
+  // Reverse the obtained chain to make the root of inlined chain last.
+  std::reverse(InlinedChain.begin(), InlinedChain.end());
+}
+
 DWARFDie DWARFDie::getParent() const {
   if (isValid())
     return U->getParent(Die);