1 files changed, 61 insertions, 0 deletions
diff --git a/contrib/llvm-project/lld/Common/Reproduce.cpp b/contrib/llvm-project/lld/Common/Reproduce.cpp
new file mode 100644
index 000000000000..24210c420418
--- /dev/null
+++ b/contrib/llvm-project/lld/Common/Reproduce.cpp
@@ -0,0 +1,61 @@
+//===- Reproduce.cpp - Utilities for creating reproducers -----------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "lld/Common/Reproduce.h"
+#include "llvm/Option/Arg.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Path.h"
+
+using namespace lld;
+using namespace llvm;
+using namespace llvm::sys;
+
+// Makes a given pathname an absolute path first, and then remove
+// beginning /. For example, "../foo.o" is converted to "home/john/foo.o",
+// assuming that the current directory is "/home/john/bar".
+// Returned string is a forward slash separated path even on Windows to avoid
+// a mess with backslash-as-escape and backslash-as-path-separator.
+std::string lld::relativeToRoot(StringRef path) {
+  SmallString<128> abs = path;
+  if (fs::make_absolute(abs))
+    return path;
+  path::remove_dots(abs, /*remove_dot_dot=*/true);
+
+  // This is Windows specific. root_name() returns a drive letter
+  // (e.g. "c:") or a UNC name (//net). We want to keep it as part
+  // of the result.
+  SmallString<128> res;
+  StringRef root = path::root_name(abs);
+  if (root.endswith(":"))
+    res = root.drop_back();
+  else if (root.startswith("//"))
+    res = root.substr(2);
+
+  path::append(res, path::relative_path(abs));
+  return path::convert_to_slash(res);
+}
+
+// Quote a given string if it contains a space character.
+std::string lld::quote(StringRef s) {
+  if (s.contains(' '))
+    return ("\"" + s + "\"").str();
+  return s;
+}
+
+// Converts an Arg to a string representation suitable for a response file.
+// To show an Arg in a diagnostic, use Arg::getAsString() instead.
+std::string lld::toString(const opt::Arg &arg) {
+  std::string k = arg.getSpelling();
+  if (arg.getNumValues() == 0)
+    return k;
+  std::string v = quote(arg.getValue());
+  if (arg.getOption().getRenderStyle() == opt::Option::RenderJoinedStyle)
+    return k + v;
+  return k + " " + v;
+}