From c2fe96cad74dc869cdb08ed93d4fcd2c1a1f4a95 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Sat, 31 May 2014 00:10:47 +0000
Subject: [PATCH] delete dead code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209938 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Support/FileSystem.h | 24 ------------------------
 lib/Support/Unix/Path.inc         | 29 -----------------------------
 lib/Support/Windows/Path.inc      | 11 -----------
 3 files changed, 64 deletions(-)

diff --git a/include/llvm/Support/FileSystem.h b/include/llvm/Support/FileSystem.h
index 806a3e376cc..56897aa5268 100644
--- a/include/llvm/Support/FileSystem.h
+++ b/include/llvm/Support/FileSystem.h
@@ -722,30 +722,6 @@ public:
   static int alignment();
 };
 
-/// @brief Memory maps the contents of a file
-///
-/// @param path Path to file to map.
-/// @param file_offset Byte offset in file where mapping should begin.
-/// @param size Byte length of range of the file to map.
-/// @param map_writable If true, the file will be mapped in r/w such
-///        that changes to the mapped buffer will be flushed back
-///        to the file.  If false, the file will be mapped read-only
-///        and the buffer will be read-only.
-/// @param result Set to the start address of the mapped buffer.
-/// @returns errc::success if result has been successfully set, otherwise a
-///          platform specific error_code.
-error_code map_file_pages(const Twine &path, off_t file_offset, size_t size,  
-                          bool map_writable, void *&result);
-
-
-/// @brief Memory unmaps the contents of a file
-///
-/// @param base Pointer to the start of the buffer.
-/// @param size Byte length of the range to unmmap.
-/// @returns errc::success if result has been successfully set, otherwise a
-///          platform specific error_code.
-error_code unmap_file_pages(void *base, size_t size);
-
 /// Return the path to the main executable, given the value of argv[0] from
 /// program startup and the address of main itself. In extremis, this function
 /// may fail and return an empty path.
diff --git a/lib/Support/Unix/Path.inc b/lib/Support/Unix/Path.inc
index 519a016a84c..c36c865451e 100644
--- a/lib/Support/Unix/Path.inc
+++ b/lib/Support/Unix/Path.inc
@@ -653,35 +653,6 @@ error_code get_magic(const Twine &path, uint32_t len,
   return error_code::success();
 }
 
-error_code map_file_pages(const Twine &path, off_t file_offset, size_t size,  
-                                            bool map_writable, void *&result) {
-  SmallString<128> path_storage;
-  StringRef name = path.toNullTerminatedStringRef(path_storage);
-  int oflags = map_writable ? O_RDWR : O_RDONLY;
-  int ofd = ::open(name.begin(), oflags);
-  if ( ofd == -1 )
-    return error_code(errno, system_category());
-  AutoFD fd(ofd);
-  int flags = map_writable ? MAP_SHARED : MAP_PRIVATE;
-  int prot = map_writable ? (PROT_READ|PROT_WRITE) : PROT_READ;
-#ifdef MAP_FILE
-  flags |= MAP_FILE;
-#endif
-  result = ::mmap(nullptr, size, prot, flags, fd, file_offset);
-  if (result == MAP_FAILED) {
-    return error_code(errno, system_category());
-  }
-  
-  return error_code::success();
-}
-
-error_code unmap_file_pages(void *base, size_t size) {
-  if ( ::munmap(base, size) == -1 )
-    return error_code(errno, system_category());
-   
-  return error_code::success();
-}
-
 error_code openFileForRead(const Twine &Name, int &ResultFD) {
   SmallString<128> Storage;
   StringRef P = Name.toNullTerminatedStringRef(Storage);
diff --git a/lib/Support/Windows/Path.inc b/lib/Support/Windows/Path.inc
index e59888e3858..28eec109f58 100644
--- a/lib/Support/Windows/Path.inc
+++ b/lib/Support/Windows/Path.inc
@@ -791,17 +791,6 @@ error_code detail::directory_iterator_increment(detail::DirIterState &it) {
   return error_code::success();
 }
 
-error_code map_file_pages(const Twine &path, off_t file_offset, size_t size,
-                                            bool map_writable, void *&result) {
-  assert(0 && "NOT IMPLEMENTED");
-  return windows_error::invalid_function;
-}
-
-error_code unmap_file_pages(void *base, size_t size) {
-  assert(0 && "NOT IMPLEMENTED");
-  return windows_error::invalid_function;
-}
-
 error_code openFileForRead(const Twine &Name, int &ResultFD) {
   SmallString<128> PathStorage;
   SmallVector<wchar_t, 128> PathUTF16;