Create the Support library.

This has been a long-standing TODO in the build system.  Now that we need to
share the non-inlined implementation of file utilities for translators, create
a separate library for support functionality.  Move Support/* headers to the
new library in the build system.

PiperOrigin-RevId: 222398880

1 files changed, 39 insertions, 0 deletions

diff --git a/mlir/lib/Support/FileUtilities.cpp b/mlir/lib/Support/FileUtilities.cpp
new file mode 100644
index 00000000000..e9717abfc0d
--- /dev/null
+++ b/mlir/lib/Support/FileUtilities.cpp
@@ -0,0 +1,39 @@
+//===- FileUtilities.cpp - utilities for working with files -----*- C++ -*-===//
+//
+// Copyright 2019 The MLIR Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// =============================================================================
+//
+// Definitions of common utilities for working with files.
+//
+//===----------------------------------------------------------------------===//
+
+#include "mlir/Support/FileUtilities.h"
+#include "llvm/Support/FileUtilities.h"
+#include "llvm/Support/ToolOutputFile.h"
+
+using namespace mlir;
+
+std::unique_ptr<llvm::ToolOutputFile>
+mlir::openOutputFile(StringRef outputFilename) {
+  std::error_code error;
+  auto result = llvm::make_unique<llvm::ToolOutputFile>(outputFilename, error,
+                                                        llvm::sys::fs::F_None);
+  if (error) {
+    llvm::errs() << error.message();
+    return nullptr;
+  }
+
+  return result;
+}