Remove F_modify flag from FileOutputBuffer.
This code is dead. There is no use of the feature in the entire LLVM codebase.
Differential Revision: https://reviews.llvm.org/D56939
llvm-svn: 351613
diff --git a/llvm/lib/Support/FileOutputBuffer.cpp b/llvm/lib/Support/FileOutputBuffer.cpp
index b822312..b98152a 100644
--- a/llvm/lib/Support/FileOutputBuffer.cpp
+++ b/llvm/lib/Support/FileOutputBuffer.cpp
@@ -116,30 +116,24 @@
}
static Expected<std::unique_ptr<OnDiskBuffer>>
-createOnDiskBuffer(StringRef Path, size_t Size, bool InitExisting,
- unsigned Mode) {
+createOnDiskBuffer(StringRef Path, size_t Size, unsigned Mode) {
Expected<fs::TempFile> FileOrErr =
fs::TempFile::create(Path + ".tmp%%%%%%%", Mode);
if (!FileOrErr)
return FileOrErr.takeError();
fs::TempFile File = std::move(*FileOrErr);
- if (InitExisting) {
- if (auto EC = sys::fs::copy_file(Path, File.FD))
- return errorCodeToError(EC);
- } else {
#ifndef _WIN32
- // On Windows, CreateFileMapping (the mmap function on Windows)
- // automatically extends the underlying file. We don't need to
- // extend the file beforehand. _chsize (ftruncate on Windows) is
- // pretty slow just like it writes specified amount of bytes,
- // so we should avoid calling that function.
- if (auto EC = fs::resize_file(File.FD, Size)) {
- consumeError(File.discard());
- return errorCodeToError(EC);
- }
-#endif
+ // On Windows, CreateFileMapping (the mmap function on Windows)
+ // automatically extends the underlying file. We don't need to
+ // extend the file beforehand. _chsize (ftruncate on Windows) is
+ // pretty slow just like it writes specified amount of bytes,
+ // so we should avoid calling that function.
+ if (auto EC = fs::resize_file(File.FD, Size)) {
+ consumeError(File.discard());
+ return errorCodeToError(EC);
}
+#endif
// Mmap it.
std::error_code EC;
@@ -163,15 +157,6 @@
fs::file_status Stat;
fs::status(Path, Stat);
- if ((Flags & F_modify) && Size == size_t(-1)) {
- if (Stat.type() == fs::file_type::regular_file)
- Size = Stat.getSize();
- else if (Stat.type() == fs::file_type::file_not_found)
- return errorCodeToError(errc::no_such_file_or_directory);
- else
- return errorCodeToError(errc::invalid_argument);
- }
-
// Usually, we want to create OnDiskBuffer to create a temporary file in
// the same directory as the destination file and atomically replaces it
// by rename(2).
@@ -186,7 +171,7 @@
case fs::file_type::regular_file:
case fs::file_type::file_not_found:
case fs::file_type::status_error:
- return createOnDiskBuffer(Path, Size, !!(Flags & F_modify), Mode);
+ return createOnDiskBuffer(Path, Size, Mode);
default:
return createInMemoryBuffer(Path, Size, Mode);
}