Merge branch 'main' into users/mingmingl-llvm/samplefdo-profile-formatusers/mingmingl-llvm/samplefdo-profile-format

1 files changed, 40 insertions, 0 deletions

diff --git a/llvm/lib/Support/VirtualOutputBackend.cpp b/llvm/lib/Support/VirtualOutputBackend.cpp
new file mode 100644
index 000000000000..97dab054dfa0
--- /dev/null
+++ b/llvm/lib/Support/VirtualOutputBackend.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// 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 \c vfs::OutputBackend class methods.
+///
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/VirtualOutputBackend.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Support/VirtualOutputError.h"
+
+using namespace llvm;
+using namespace llvm::vfs;
+
+void OutputBackend::anchor() {}
+
+Expected<OutputFile>
+OutputBackend::createFile(const Twine &Path,
+                          std::optional<OutputConfig> Config) {
+  SmallString<128> PathStorage;
+  Path.toVector(PathStorage);
+
+  if (Config) {
+    // Check for invalid configs.
+    if (!Config->getText() && Config->getCRLF())
+      return make_error<OutputConfigError>(*Config, PathStorage);
+  }
+
+  std::unique_ptr<OutputFileImpl> Impl;
+  if (Error E = createFileImpl(PathStorage, Config).moveInto(Impl))
+    return std::move(E);
+  assert(Impl && "Expected valid Impl or Error");
+  return OutputFile(PathStorage, std::move(Impl));
+}