[LKH] Add ObjectTransformLayer2.

llvm-svn: 333128

2 files changed, 35 insertions, 0 deletions

diff --git a/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt b/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt
index 5b94ae990be..1f349682e08 100644
--- a/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt
+++ b/llvm/lib/ExecutionEngine/Orc/CMakeLists.txt
@@ -6,6 +6,7 @@ add_llvm_library(LLVMOrcJIT
   Legacy.cpp
   Layer.cpp
   NullResolver.cpp
+  ObjectTransformLayer.cpp
   OrcABISupport.cpp
   OrcCBindings.cpp
   OrcError.cpp
diff --git a/llvm/lib/ExecutionEngine/Orc/ObjectTransformLayer.cpp b/llvm/lib/ExecutionEngine/Orc/ObjectTransformLayer.cpp
new file mode 100644
index 00000000000..6980c8140fd
--- /dev/null
+++ b/llvm/lib/ExecutionEngine/Orc/ObjectTransformLayer.cpp
@@ -0,0 +1,34 @@
+//===---------- ObjectTransformLayer.cpp - Object Transform Layer ---------===//
+//
+//                     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/ObjectTransformLayer.h"
+#include "llvm/Support/MemoryBuffer.h"
+
+namespace llvm {
+namespace orc {
+
+ObjectTransformLayer2::ObjectTransformLayer2(ExecutionSession &ES,
+                                             ObjectLayer &BaseLayer,
+                                             TransformFunction Transform)
+    : ObjectLayer(ES), BaseLayer(BaseLayer), Transform(std::move(Transform)) {}
+
+void ObjectTransformLayer2::emit(MaterializationResponsibility R, VModuleKey K,
+                                 std::unique_ptr<MemoryBuffer> O) {
+  assert(O && "Module must not be null");
+
+  if (auto TransformedObj = Transform(std::move(O)))
+    BaseLayer.emit(std::move(R), std::move(K), std::move(*TransformedObj));
+  else {
+    R.failMaterialization();
+    getExecutionSession().reportError(TransformedObj.takeError());
+  }
+}
+
+} // End namespace orc.
+} // End namespace llvm.