Update LLVM for rebase to r212749.

Includes a cherry-pick of:
r212948 - fixes a small issue with atomic calls

Change-Id: Ib97bd980b59f18142a69506400911a6009d9df18

1 files changed, 18 insertions, 20 deletions

diff --git a/lib/Object/ObjectFile.cpp b/lib/Object/ObjectFile.cpp
index d30f0cc..f5488c6 100644
--- a/lib/Object/ObjectFile.cpp
+++ b/lib/Object/ObjectFile.cpp
@@ -16,28 +16,27 @@
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/Support/system_error.h"
+#include <system_error>
 
 using namespace llvm;
 using namespace object;
 
 void ObjectFile::anchor() { }
 
-ObjectFile::ObjectFile(unsigned int Type, MemoryBuffer *Source,
-                       bool BufferOwned)
-    : SymbolicFile(Type, Source, BufferOwned) {}
+ObjectFile::ObjectFile(unsigned int Type, std::unique_ptr<MemoryBuffer> Source)
+    : SymbolicFile(Type, std::move(Source)) {}
 
-error_code ObjectFile::printSymbolName(raw_ostream &OS,
-                                       DataRefImpl Symb) const {
+std::error_code ObjectFile::printSymbolName(raw_ostream &OS,
+                                            DataRefImpl Symb) const {
   StringRef Name;
-  if (error_code EC = getSymbolName(Symb, Name))
+  if (std::error_code EC = getSymbolName(Symb, Name))
     return EC;
   OS << Name;
   return object_error::success;
 }
 
-error_code ObjectFile::getSymbolAlignment(DataRefImpl DRI,
-                                          uint32_t &Result) const {
+std::error_code ObjectFile::getSymbolAlignment(DataRefImpl DRI,
+                                               uint32_t &Result) const {
   Result = 0;
   return object_error::success;
 }
@@ -46,9 +45,9 @@ section_iterator ObjectFile::getRelocatedSection(DataRefImpl Sec) const {
   return section_iterator(SectionRef(Sec, this));
 }
 
-ErrorOr<ObjectFile *> ObjectFile::createObjectFile(MemoryBuffer *Object,
-                                                   bool BufferOwned,
-                                                   sys::fs::file_magic Type) {
+ErrorOr<ObjectFile *>
+ObjectFile::createObjectFile(std::unique_ptr<MemoryBuffer> &Object,
+                             sys::fs::file_magic Type) {
   if (Type == sys::fs::file_magic::unknown)
     Type = sys::fs::identify_magic(Object->getBuffer());
 
@@ -58,14 +57,12 @@ ErrorOr<ObjectFile *> ObjectFile::createObjectFile(MemoryBuffer *Object,
   case sys::fs::file_magic::archive:
   case sys::fs::file_magic::macho_universal_binary:
   case sys::fs::file_magic::windows_resource:
-    if (BufferOwned)
-      delete Object;
     return object_error::invalid_file_type;
   case sys::fs::file_magic::elf_relocatable:
   case sys::fs::file_magic::elf_executable:
   case sys::fs::file_magic::elf_shared_object:
   case sys::fs::file_magic::elf_core:
-    return createELFObjectFile(Object, BufferOwned);
+    return createELFObjectFile(Object);
   case sys::fs::file_magic::macho_object:
   case sys::fs::file_magic::macho_executable:
   case sys::fs::file_magic::macho_fixed_virtual_memory_shared_lib:
@@ -76,18 +73,19 @@ ErrorOr<ObjectFile *> ObjectFile::createObjectFile(MemoryBuffer *Object,
   case sys::fs::file_magic::macho_bundle:
   case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub:
   case sys::fs::file_magic::macho_dsym_companion:
-    return createMachOObjectFile(Object, BufferOwned);
+    return createMachOObjectFile(Object);
   case sys::fs::file_magic::coff_object:
   case sys::fs::file_magic::coff_import_library:
   case sys::fs::file_magic::pecoff_executable:
-    return createCOFFObjectFile(Object, BufferOwned);
+    return createCOFFObjectFile(std::move(Object));
   }
   llvm_unreachable("Unexpected Object File Type");
 }
 
 ErrorOr<ObjectFile *> ObjectFile::createObjectFile(StringRef ObjectPath) {
-  std::unique_ptr<MemoryBuffer> File;
-  if (error_code EC = MemoryBuffer::getFile(ObjectPath, File))
+  ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
+      MemoryBuffer::getFile(ObjectPath);
+  if (std::error_code EC = FileOrErr.getError())
     return EC;
-  return createObjectFile(File.release());
+  return createObjectFile(FileOrErr.get());
 }