From e8e3eb839729ae894a2410e1f7f5e92139e077e4 Mon Sep 17 00:00:00 2001
From: Justin Bogner <mail@justinbogner.com>
Date: Mon, 16 Feb 2015 21:28:58 +0000
Subject: [PATCH] InstrProf: Use ErrorOr for IndexedInstrProfReader::create
 (NFC)

The other InstrProfReader::create factories were updated to return
ErrorOr in r221120, and it's odd for these APIs not to match.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229433 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/ProfileData/InstrProfReader.h |  4 ++--
 lib/ProfileData/CoverageMapping.cpp        |  5 +++--
 lib/ProfileData/InstrProfReader.cpp        | 11 ++++++++---
 3 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/include/llvm/ProfileData/InstrProfReader.h b/include/llvm/ProfileData/InstrProfReader.h
index 495966425c5..5dd1d4f9dd7 100644
--- a/include/llvm/ProfileData/InstrProfReader.h
+++ b/include/llvm/ProfileData/InstrProfReader.h
@@ -292,8 +292,8 @@ public:
   uint64_t getMaximumFunctionCount() { return MaxFunctionCount; }
 
   /// Factory method to create an indexed reader.
-  static std::error_code
-  create(std::string Path, std::unique_ptr<IndexedInstrProfReader> &Result);
+  static ErrorOr<std::unique_ptr<IndexedInstrProfReader>>
+  create(std::string Path);
 };
 
 } // end namespace llvm
diff --git a/lib/ProfileData/CoverageMapping.cpp b/lib/ProfileData/CoverageMapping.cpp
index b3d9884d2a1..df6fae7b483 100644
--- a/lib/ProfileData/CoverageMapping.cpp
+++ b/lib/ProfileData/CoverageMapping.cpp
@@ -223,9 +223,10 @@ CoverageMapping::load(StringRef ObjectFilename, StringRef ProfileFilename) {
   ObjectFileCoverageMappingReader CoverageReader(CounterMappingBuff.get());
   if (auto EC = CoverageReader.readHeader())
     return EC;
-  std::unique_ptr<IndexedInstrProfReader> ProfileReader;
-  if (auto EC = IndexedInstrProfReader::create(ProfileFilename, ProfileReader))
+  auto ProfileReaderOrErr = IndexedInstrProfReader::create(ProfileFilename);
+  if (auto EC = ProfileReaderOrErr.getError())
     return EC;
+  auto ProfileReader = std::move(ProfileReaderOrErr.get());
   return load(CoverageReader, *ProfileReader);
 }
 
diff --git a/lib/ProfileData/InstrProfReader.cpp b/lib/ProfileData/InstrProfReader.cpp
index 31ed1309b46..d13f27c3113 100644
--- a/lib/ProfileData/InstrProfReader.cpp
+++ b/lib/ProfileData/InstrProfReader.cpp
@@ -64,21 +64,26 @@ InstrProfReader::create(std::string Path) {
   return std::move(Result);
 }
 
-std::error_code IndexedInstrProfReader::create(
-    std::string Path, std::unique_ptr<IndexedInstrProfReader> &Result) {
+ErrorOr<std::unique_ptr<IndexedInstrProfReader>>
+IndexedInstrProfReader::create(std::string Path) {
   // Set up the buffer to read.
   auto BufferOrError = setupMemoryBuffer(Path);
   if (std::error_code EC = BufferOrError.getError())
     return EC;
 
   auto Buffer = std::move(BufferOrError.get());
+  std::unique_ptr<IndexedInstrProfReader> Result;
+
   // Create the reader.
   if (!IndexedInstrProfReader::hasFormat(*Buffer))
     return instrprof_error::bad_magic;
   Result.reset(new IndexedInstrProfReader(std::move(Buffer)));
 
   // Initialize the reader and return the result.
-  return initializeReader(*Result);
+  if (std::error_code EC = initializeReader(*Result))
+    return EC;
+
+  return std::move(Result);
 }
 
 void InstrProfIterator::Increment() {
-- 
2.34.1