diff --git a/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h b/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h
--- a/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h
+++ b/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h
@@ -16,6 +16,7 @@
 #include "llvm/DebugInfo/Symbolize/SymbolizableModule.h"
 #include "llvm/Object/Binary.h"
 #include "llvm/Object/ObjectFile.h"
+#include "llvm/Object/ELFObjectFile.h"
 #include "llvm/Support/Error.h"
 #include <algorithm>
 #include <cstdint>
@@ -44,6 +45,7 @@
     std::vector<std::string> DsymHints;
     std::string FallbackDebugPath;
     std::string DWPName;
+    std::vector<std::string> DebugFileDirectory;
   };
 
   LLVMSymbolizer() = default;
@@ -98,6 +100,9 @@
   ObjectFile *lookUpDebuglinkObject(const std::string &Path,
                                     const ObjectFile *Obj,
                                     const std::string &ArchName);
+  ObjectFile *lookUpBuildIDObject(const std::string &Path,
+                                  const ELFObjectFileBase *Obj,
+                                  const std::string &ArchName);
 
   /// Returns pair of pointers to object and debug object.
   Expected<ObjectPair> getOrCreateObjectPair(const std::string &Path,
diff --git a/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp b/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
--- a/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
+++ b/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
@@ -284,6 +284,79 @@
   return !memcmp(dbg_uuid.data(), bin_uuid.data(), dbg_uuid.size());
 }
 
+template <typename ELFT>
+Optional<ArrayRef<uint8_t>> getBuildID(const ELFFile<ELFT> *Obj) {
+  if (!Obj)
+    return {};
+  auto PhdrsOrErr = Obj->program_headers();
+  if (!PhdrsOrErr) {
+    consumeError(PhdrsOrErr.takeError());
+    return {};
+  }
+  for (const auto &P : *PhdrsOrErr) {
+    if (P.p_type != ELF::PT_NOTE)
+      continue;
+    Error Err = Error::success();
+    for (const auto &N : Obj->notes(P, Err))
+      if (N.getType() == ELF::NT_GNU_BUILD_ID && N.getName() == ELF::ELF_NOTE_GNU)
+        return N.getDesc();
+  }
+  return {};
+}
+
+Optional<ArrayRef<uint8_t>> getBuildID(const ELFObjectFileBase *Obj) {
+  Optional<ArrayRef<uint8_t>> BuildID;
+  if (auto *O = dyn_cast<ELFObjectFile<ELF32LE>>(Obj))
+    BuildID = getBuildID(O->getELFFile());
+  else if (auto *O = dyn_cast<ELFObjectFile<ELF32BE>>(Obj))
+    BuildID = getBuildID(O->getELFFile());
+  else if (auto *O = dyn_cast<ELFObjectFile<ELF64LE>>(Obj))
+    BuildID = getBuildID(O->getELFFile());
+  else if (auto *O = dyn_cast<ELFObjectFile<ELF64BE>>(Obj))
+    BuildID = getBuildID(O->getELFFile());
+  else
+    llvm_unreachable("unsupported file format");
+  return BuildID;
+}
+
+bool findDebugBinary(const std::vector<std::string> &DebugFileDirectory,
+                     const ArrayRef<uint8_t> BuildID,
+                     std::string &Result) {
+  auto getDebugPath = [&](StringRef Directory) {
+    SmallString<128> Path{Directory};
+    sys::path::append(Path, ".build-id",
+                      llvm::toHex(BuildID[0], /*LowerCase=*/true),
+                      llvm::toHex(BuildID.slice(1), /*LowerCase=*/true));
+    Path += ".debug";
+    return Path;
+  };
+  if (DebugFileDirectory.empty()) {
+    SmallString<128> Path = getDebugPath(
+#if defined(__NetBSD__)
+      // Try /usr/libdata/debug/.build-id/../...
+      "/usr/libdata/debug"
+#else
+      // Try /usr/lib/debug/.build-id/../...
+      "/usr/lib/debug"
+#endif
+    );
+    if (llvm::sys::fs::exists(Path)) {
+      Result = Path.str();
+      return true;
+    }
+  } else {
+    for (const auto &Directory : DebugFileDirectory) {
+      // Try <debug-file-directory>/.build-id/../...
+      SmallString<128> Path = getDebugPath(Directory);
+      if (llvm::sys::fs::exists(Path)) {
+        Result = Path.str();
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
 } // end anonymous namespace
 
 ObjectFile *LLVMSymbolizer::lookUpDsymFile(const std::string &ExePath,
@@ -335,6 +408,25 @@
   return DbgObjOrErr.get();
 }
 
+ObjectFile *LLVMSymbolizer::lookUpBuildIDObject(const std::string &Path,
+                                                const ELFObjectFileBase *Obj,
+                                                const std::string &ArchName) {
+  auto BuildID = getBuildID(Obj);
+  if (!BuildID)
+    return nullptr;
+  if (BuildID->size() < 2)
+    return nullptr;
+  std::string DebugBinaryPath;
+  if (!findDebugBinary(Opts.DebugFileDirectory, *BuildID, DebugBinaryPath))
+    return nullptr;
+  auto DbgObjOrErr = getOrCreateObject(DebugBinaryPath, ArchName);
+  if (!DbgObjOrErr) {
+    consumeError(DbgObjOrErr.takeError());
+    return nullptr;
+  }
+  return DbgObjOrErr.get();
+}
+
 Expected<LLVMSymbolizer::ObjectPair>
 LLVMSymbolizer::getOrCreateObjectPair(const std::string &Path,
                                       const std::string &ArchName) {
@@ -355,6 +447,8 @@
 
   if (auto MachObj = dyn_cast<const MachOObjectFile>(Obj))
     DbgObj = lookUpDsymFile(Path, MachObj, ArchName);
+  else if (auto ELFObj = dyn_cast<const ELFObjectFileBase>(Obj))
+    DbgObj = lookUpBuildIDObject(Path, ELFObj, ArchName);
   if (!DbgObj)
     DbgObj = lookUpDebuglinkObject(Path, Obj, ArchName);
   if (!DbgObj)
diff --git a/llvm/test/DebugInfo/Inputs/.build-id/ab/b50d82b6bdc861.debug b/llvm/test/DebugInfo/Inputs/.build-id/ab/b50d82b6bdc861.debug
new file mode 100755
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/llvm/test/DebugInfo/symbolize-build-id.test b/llvm/test/DebugInfo/symbolize-build-id.test
new file mode 100644
--- /dev/null
+++ b/llvm/test/DebugInfo/symbolize-build-id.test
@@ -0,0 +1,28 @@
+# RUN: yaml2obj %s -o %t
+
+# RUN: llvm-symbolizer --debug-file-directory=/non-existent --obj=%t 0x20112f | FileCheck --check-prefix=UNKNOWN %s
+
+# UNKNOWN:      ??
+# UNKNOWN-NEXT: ??:0:0
+
+# RUN: llvm-symbolizer --debug-file-directory=%p/Inputs --obj=%t 0x20112f | FileCheck --check-prefix=FOUND %s
+
+# FOUND:      main
+# FOUND-NEXT: /tmp/dbginfo{{[/\\]}}dwarfdump-test.cc:16
+
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_EXEC
+  Machine: EM_X86_64
+Sections:
+  - Name:    .note.gnu.build-id
+    Type:    SHT_NOTE
+    Flags:   [ SHF_ALLOC ]
+    Content: 040000000800000003000000474e5500abb50d82b6bdc861
+ProgramHeaders:
+  - Type: PT_NOTE
+    Flags: [ PF_R ]
+    Sections:
+      - Section: .note.gnu.build-id
diff --git a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
--- a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
+++ b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
@@ -150,6 +150,12 @@
     ClFallbackDebugPath("fallback-debug-path", cl::init(""),
                         cl::desc("Fallback path for debug binaries."));
 
+static cl::list<std::string>
+    ClDebugFileDirectory("debug-file-directory", cl::ZeroOrMore,
+                         cl::value_desc("dir"),
+                         cl::desc("Path to directory where to look for debug "
+                                  "files."));
+
 static cl::opt<DIPrinter::OutputStyle>
     ClOutputStyle("output-style", cl::init(DIPrinter::OutputStyle::LLVM),
                   cl::desc("Specify print style"),
@@ -299,6 +305,7 @@
   Opts.DefaultArch = ClDefaultArch;
   Opts.FallbackDebugPath = ClFallbackDebugPath;
   Opts.DWPName = ClDwpName;
+  Opts.DebugFileDirectory = ClDebugFileDirectory;
 
   for (const auto &hint : ClDsymHint) {
     if (sys::path::extension(hint) == ".dSYM") {