1 files changed, 67 insertions, 0 deletions
diff --git a/llvm/lib/ExecutionEngine/Orc/Legacy.cpp b/llvm/lib/ExecutionEngine/Orc/Legacy.cpp
new file mode 100644
index 000000000000..9f9a6730b2c3
--- /dev/null
+++ b/llvm/lib/ExecutionEngine/Orc/Legacy.cpp
@@ -0,0 +1,67 @@
+//===------- Legacy.cpp - Adapters for ExecutionEngine API interop --------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#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) {}
+
+void JITSymbolResolverAdapter::lookup(const LookupSet &Symbols,
+                                      OnResolvedFunction OnResolved) {
+  SymbolNameSet InternedSymbols;
+  for (auto &S : Symbols)
+    InternedSymbols.insert(ES.intern(S));
+
+  auto OnResolvedWithUnwrap = [OnResolved = std::move(OnResolved)](
+                                  Expected<SymbolMap> InternedResult) mutable {
+    if (!InternedResult) {
+      OnResolved(InternedResult.takeError());
+      return;
+    }
+
+    LookupResult Result;
+    for (auto &KV : *InternedResult)
+      Result[*KV.first] = std::move(KV.second);
+    OnResolved(Result);
+  };
+
+  auto Q = std::make_shared<AsynchronousSymbolQuery>(
+      InternedSymbols, SymbolState::Resolved, std::move(OnResolvedWithUnwrap));
+
+  auto Unresolved = R.lookup(Q, InternedSymbols);
+  if (Unresolved.empty()) {
+    if (MR)
+      MR->addDependenciesForAll(Q->QueryRegistrations);
+  } else
+    ES.legacyFailQuery(*Q, make_error<SymbolsNotFound>(std::move(Unresolved)));
+}
+
+Expected<JITSymbolResolverAdapter::LookupSet>
+JITSymbolResolverAdapter::getResponsibilitySet(const LookupSet &Symbols) {
+  SymbolNameSet InternedSymbols;
+  for (auto &S : Symbols)
+    InternedSymbols.insert(ES.intern(S));
+
+  auto InternedResult = R.getResponsibilitySet(InternedSymbols);
+  LookupSet Result;
+  for (auto &S : InternedResult) {
+    ResolvedStrings.insert(S);
+    Result.insert(*S);
+  }
+
+  return Result;
+}
+
+} // End namespace orc.
+} // End namespace llvm.