[compiler-rt] [llvm] [ORC] Implement basic reoptimization. (PR #67050)

[Lang Hames via llvm-commits]

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@@ -0,0 +1,179 @@
+//===- ReOptimizeLayer.h - Re-optimization layer interface ------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// Re-optimization layer interface.
+//
+//===----------------------------------------------------------------------===//
+#ifndef LLVM_EXECUTIONENGINE_ORC_REOPTLAYER_H
+#define LLVM_EXECUTIONENGINE_ORC_REOPTLAYER_H
+
+#include "llvm/ExecutionEngine/Orc/Core.h"
+#include "llvm/ExecutionEngine/Orc/Layer.h"
+#include "llvm/ExecutionEngine/Orc/RedirectionManager.h"
+#include "llvm/ExecutionEngine/Orc/ThreadSafeModule.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/Transforms/Utils/BasicBlockUtils.h"
+#include "llvm/Transforms/Utils/Cloning.h"
+
+namespace llvm {
+namespace orc {
+
+using ReOptMaterializationUnitID = uint64_t;
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lhames wrote:

Use of this type seems to be contained within the `ReOptimizeLayer` -- could it be a member of that class?

https://github.com/llvm/llvm-project/pull/67050