[lld] [llvm] [DTLTO][ELF][COFF] Add archive support for DTLTO. (PR #157043)

[Konstantin Belochapka via llvm-commits]

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@@ -0,0 +1,226 @@
+//===- Dtlto.cpp - Distributed ThinLTO implementation --------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// \file
+// This file implements support functions for Distributed ThinLTO, focusing on
+// archive file handling.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DTLTO/DTLTO.h"
+
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/BinaryFormat/Magic.h"
+#include "llvm/LTO/LTO.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBufferRef.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/raw_ostream.h"
+
+#include <iostream>
+#include <string>
+
+using namespace llvm;
+
+namespace dtlto {
+
+// Removes any temporary regular archive member files that were created during
+// processing.
+TempFilesRemover::~TempFilesRemover() {
+  if (!Lto)
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kbelochapka wrote:

Thanks, 'Lto==nullptr' check here is redundant, removed. 

https://github.com/llvm/llvm-project/pull/157043