Use std::error_code rather than llvm::error_code

std::error_code is no longer available via the llvm namespace as of
r210835.

Swift SVN r18851

Author: bogner

Diff for: lib/Driver/Driver.cpp

@@ -818,8 +818,8 @@ static StringRef getOutputFilename(const JobAction *JA,
     // the top level.
     StringRef Stem = llvm::sys::path::stem(BaseName);
     StringRef Suffix = types::getTypeTempSuffix(JA->getType());
-    llvm::error_code EC = llvm::sys::fs::createTemporaryFile(Stem, Suffix,
-                                                             Buffer);
+    std::error_code EC =
+        llvm::sys::fs::createTemporaryFile(Stem, Suffix, Buffer);
     if (EC) {
       Diags.diagnose(SourceLoc(),
                      diag::error_unable_to_make_temporary_file,

Diff for: lib/IRGen/IRGenDebugInfo.cpp

@@ -500,9 +500,9 @@ llvm::DIFile IRGenDebugInfo::getOrCreateFile(const char *Filename) {
   StringRef File = BumpAllocatedString(llvm::sys::path::filename(Filename));
   llvm::SmallString<512> Path(Filename);
   llvm::sys::path::remove_filename(Path);
-  llvm::error_code ec = llvm::sys::fs::make_absolute(Path);
+  std::error_code ec = llvm::sys::fs::make_absolute(Path);
   // Basically ignore any error.
-  assert(ec == llvm::error_code());
+  assert(ec == std::error_code());
   (void)ec; // Silence the unused variable warning
   llvm::DIFile F = DBuilder.createFile(File, BumpAllocatedString(Path));
 

Diff for: lib/Serialization/Serialization.cpp

@@ -424,7 +424,7 @@ void Serializer::writeInputFiles(FilenamesTy inputFiles,
   for (auto filename : inputFiles) {
     llvm::SmallString<128> path(filename);
 
-    llvm::error_code err;
+    std::error_code err;
     err = llvm::sys::fs::make_absolute(path);
     if (err)
       continue;

Diff for: tools/driver/driver.cpp

@@ -54,8 +54,8 @@ int main(int argc_, const char **argv_) {
 
   llvm::SmallVector<const char *, 256> argv;
   llvm::SpecificBumpPtrAllocator<char> ArgAllocator;
-  llvm::error_code EC = llvm::sys::Process::GetArgumentVector(argv,
-                      llvm::ArrayRef<const char *>(argv_, argc_), ArgAllocator);
+  std::error_code EC = llvm::sys::Process::GetArgumentVector(
+      argv, llvm::ArrayRef<const char *>(argv_, argc_), ArgAllocator);
   if (EC) {
     llvm::errs() << "error: couldn't get arguments: " << EC.message() << '\n';
     return 1;

Diff for: tools/swift-ide-test/swift-ide-test.cpp

@@ -303,7 +303,7 @@ static int doCodeCompletion(const CompilerInvocation &InitInvok,
                             StringRef CodeCompletionToken,
                             bool CodeCompletionDiagnostics) {
   std::unique_ptr<llvm::MemoryBuffer> InputFile;
-  if (llvm::error_code Err =
+  if (std::error_code Err =
           llvm::MemoryBuffer::getFile(SourceFilename, InputFile)) {
     llvm::errs() << "error opening input file: " << Err.message() << '\n';
     return 1;
@@ -359,7 +359,7 @@ static int doCodeCompletion(const CompilerInvocation &InitInvok,
 static int doREPLCodeCompletion(const CompilerInvocation &InitInvok,
                                 StringRef SourceFilename) {
   std::unique_ptr<llvm::MemoryBuffer> InputFile;
-  if (llvm::error_code Err =
+  if (std::error_code Err =
           llvm::MemoryBuffer::getFile(SourceFilename, InputFile)) {
     llvm::errs() << "error opening input file: " << Err.message() << '\n';
     return 1;
@@ -904,7 +904,7 @@ static int doSemanticAnnotation(const CompilerInvocation &InitInvok,
 
 static int doInputCompletenessTest(StringRef SourceFilename) {
   std::unique_ptr<llvm::MemoryBuffer> InputFile;
-  if (llvm::error_code Err =
+  if (std::error_code Err =
           llvm::MemoryBuffer::getFile(SourceFilename, InputFile)) {
     llvm::errs() << "error opening input file: " << Err.message() << '\n';
     return 1;
@@ -1517,7 +1517,7 @@ static int doParseReST(StringRef SourceFilename) {
   llvm::rest::SourceManager<unsigned> SM;
   llvm::SmallString<64> DocutilsXML;
   std::unique_ptr<llvm::MemoryBuffer> InputFile;
-  if (llvm::error_code Err =
+  if (std::error_code Err =
           llvm::MemoryBuffer::getFileOrSTDIN(SourceFilename, InputFile)) {
     llvm::errs() << "error opening input file: " << Err.message() << '\n';
     return 1;