Convert two uses of ErrorOr to Expected.

llvm-svn: 315354
diff --git a/llvm/include/llvm/Object/ObjectFile.h b/llvm/include/llvm/Object/ObjectFile.h
index 5749637..c794351 100644
--- a/llvm/include/llvm/Object/ObjectFile.h
+++ b/llvm/include/llvm/Object/ObjectFile.h
@@ -23,7 +23,6 @@
 #include "llvm/Object/SymbolicFile.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/Error.h"
-#include "llvm/Support/ErrorOr.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include <cassert>
@@ -322,10 +321,10 @@
     return v->isObject();
   }
 
-  static ErrorOr<std::unique_ptr<COFFObjectFile>>
+  static Expected<std::unique_ptr<COFFObjectFile>>
   createCOFFObjectFile(MemoryBufferRef Object);
 
-  static ErrorOr<std::unique_ptr<ObjectFile>>
+  static Expected<std::unique_ptr<ObjectFile>>
   createELFObjectFile(MemoryBufferRef Object);
 
   static Expected<std::unique_ptr<MachOObjectFile>>
diff --git a/llvm/lib/Object/COFFObjectFile.cpp b/llvm/lib/Object/COFFObjectFile.cpp
index f88ebfc..e139f64 100644
--- a/llvm/lib/Object/COFFObjectFile.cpp
+++ b/llvm/lib/Object/COFFObjectFile.cpp
@@ -1590,12 +1590,12 @@
   return std::error_code();
 }
 
-ErrorOr<std::unique_ptr<COFFObjectFile>>
+Expected<std::unique_ptr<COFFObjectFile>>
 ObjectFile::createCOFFObjectFile(MemoryBufferRef Object) {
   std::error_code EC;
   std::unique_ptr<COFFObjectFile> Ret(new COFFObjectFile(Object, EC));
   if (EC)
-    return EC;
+    return errorCodeToError(EC);
   return std::move(Ret);
 }
 
diff --git a/llvm/lib/Object/ELFObjectFile.cpp b/llvm/lib/Object/ELFObjectFile.cpp
index 986eccc..da87b3b 100644
--- a/llvm/lib/Object/ELFObjectFile.cpp
+++ b/llvm/lib/Object/ELFObjectFile.cpp
@@ -37,7 +37,7 @@
 ELFObjectFileBase::ELFObjectFileBase(unsigned int Type, MemoryBufferRef Source)
     : ObjectFile(Type, Source) {}
 
-ErrorOr<std::unique_ptr<ObjectFile>>
+Expected<std::unique_ptr<ObjectFile>>
 ObjectFile::createELFObjectFile(MemoryBufferRef Obj) {
   std::pair<unsigned char, unsigned char> Ident =
       getElfArchType(Obj.getBuffer());
@@ -45,7 +45,7 @@
       1ULL << countTrailingZeros(uintptr_t(Obj.getBufferStart()));
 
   if (MaxAlignment < 2)
-    return object_error::parse_failed;
+    return createError("Insufficient alignment");
 
   std::error_code EC;
   std::unique_ptr<ObjectFile> R;
@@ -55,20 +55,20 @@
     else if (Ident.second == ELF::ELFDATA2MSB)
       R.reset(new ELFObjectFile<ELFType<support::big, false>>(Obj, EC));
     else
-      return object_error::parse_failed;
+      return createError("Invalid ELF data");
   } else if (Ident.first == ELF::ELFCLASS64) {
     if (Ident.second == ELF::ELFDATA2LSB)
       R.reset(new ELFObjectFile<ELFType<support::little, true>>(Obj, EC));
     else if (Ident.second == ELF::ELFDATA2MSB)
       R.reset(new ELFObjectFile<ELFType<support::big, true>>(Obj, EC));
     else
-      return object_error::parse_failed;
+      return createError("Invalid ELF data");
   } else {
-    return object_error::parse_failed;
+    return createError("Invalid ELF class");
   }
 
   if (EC)
-    return EC;
+    return errorCodeToError(EC);
   return std::move(R);
 }
 
diff --git a/llvm/lib/Object/ObjectFile.cpp b/llvm/lib/Object/ObjectFile.cpp
index 2b80d0b..652a2b2 100644
--- a/llvm/lib/Object/ObjectFile.cpp
+++ b/llvm/lib/Object/ObjectFile.cpp
@@ -125,7 +125,7 @@
   case file_magic::elf_executable:
   case file_magic::elf_shared_object:
   case file_magic::elf_core:
-    return errorOrToExpected(createELFObjectFile(Object));
+    return createELFObjectFile(Object);
   case file_magic::macho_object:
   case file_magic::macho_executable:
   case file_magic::macho_fixed_virtual_memory_shared_lib:
@@ -141,7 +141,7 @@
   case file_magic::coff_object:
   case file_magic::coff_import_library:
   case file_magic::pecoff_executable:
-    return errorOrToExpected(createCOFFObjectFile(Object));
+    return createCOFFObjectFile(Object);
   case file_magic::wasm_object:
     return createWasmObjectFile(Object);
   }
diff --git a/llvm/test/Object/nm-archive.test b/llvm/test/Object/nm-archive.test
index 1a13c23..a059e65 100644
--- a/llvm/test/Object/nm-archive.test
+++ b/llvm/test/Object/nm-archive.test
@@ -58,7 +58,7 @@
 the unknown format. We should probably simply warn on both. For now we just
 produce an error for the unknown format.
 RUN: not llvm-nm %p/Inputs/corrupt-archive.a 2>&1 | FileCheck %s -check-prefix CORRUPT
-CORRUPT: corrupt-archive.a(trivial-object-test2.elf-x86-64) Invalid data was encountered while parsing the file
+CORRUPT: corrupt-archive.a(trivial-object-test2.elf-x86-64) Insufficient alignment
 
 
 RUN: llvm-nm %p/Inputs/thin.a | FileCheck %s -check-prefix THIN