1 files changed, 68 insertions, 0 deletions
diff --git a/lib/ExecutionEngine/Orc/Legacy.cpp b/lib/ExecutionEngine/Orc/Legacy.cpp
new file mode 100644
index 000000000000..18be9a042f7f
--- /dev/null
+++ b/lib/ExecutionEngine/Orc/Legacy.cpp
@@ -0,0 +1,68 @@
+//===------- Legacy.cpp - Adapters for ExecutionEngine API interop --------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ExecutionEngine/Orc/Legacy.h"
+
+namespace llvm {
+namespace orc {
+
+void SymbolResolver::anchor() {}
+
+JITSymbolResolverAdapter::JITSymbolResolverAdapter(
+    ExecutionSession &ES, SymbolResolver &R, MaterializationResponsibility *MR)
+    : ES(ES), R(R), MR(MR) {}
+
+Expected<JITSymbolResolverAdapter::LookupResult>
+JITSymbolResolverAdapter::lookup(const LookupSet &Symbols) {
+  SymbolNameSet InternedSymbols;
+  for (auto &S : Symbols)
+    InternedSymbols.insert(ES.getSymbolStringPool().intern(S));
+
+  auto LookupFn = [&, this](std::shared_ptr<AsynchronousSymbolQuery> Q,
+                            SymbolNameSet Unresolved) {
+    return R.lookup(std::move(Q), std::move(Unresolved));
+  };
+
+  auto RegisterDependencies = [&](const SymbolDependenceMap &Deps) {
+    if (MR)
+      MR->addDependenciesForAll(Deps);
+  };
+
+  auto InternedResult =
+      ES.legacyLookup(ES, std::move(LookupFn), std::move(InternedSymbols),
+                      false, RegisterDependencies);
+
+  if (!InternedResult)
+    return InternedResult.takeError();
+
+  JITSymbolResolver::LookupResult Result;
+  for (auto &KV : *InternedResult)
+    Result[*KV.first] = KV.second;
+
+  return Result;
+}
+
+Expected<JITSymbolResolverAdapter::LookupFlagsResult>
+JITSymbolResolverAdapter::lookupFlags(const LookupSet &Symbols) {
+  SymbolNameSet InternedSymbols;
+  for (auto &S : Symbols)
+    InternedSymbols.insert(ES.getSymbolStringPool().intern(S));
+
+  SymbolFlagsMap SymbolFlags = R.lookupFlags(InternedSymbols);
+  LookupFlagsResult Result;
+  for (auto &KV : SymbolFlags) {
+    ResolvedStrings.insert(KV.first);
+    Result[*KV.first] = KV.second;
+  }
+
+  return Result;
+}
+
+} // End namespace orc.
+} // End namespace llvm.