Only copy small types in modernize-loop-convert.

Summary: If the size of the type is above a certain bound, we'll take a const reference. This bound can be set as an option. For now, the default value is 16 bytes.

Reviewers: klimek

Subscribers: alexfh, cfe-commits

Differential Revision: http://reviews.llvm.org/D14176

llvm-svn: 251694

1 files changed, 1 insertions, 0 deletions

diff --git a/clang-tools-extra/clang-tidy/modernize/LoopConvertCheck.h b/clang-tools-extra/clang-tidy/modernize/LoopConvertCheck.h
index cf8ca19b7b1..b8288591ae0 100644
--- a/clang-tools-extra/clang-tidy/modernize/LoopConvertCheck.h
+++ b/clang-tools-extra/clang-tidy/modernize/LoopConvertCheck.h
@@ -66,6 +66,7 @@ private:
                      const ForStmt *Loop, LoopFixerKind FixerKind);
 
   std::unique_ptr<TUTrackingInfo> TUInfo;
+  const unsigned long long MaxCopySize;
   const Confidence::Level MinConfidence;
   const VariableNamer::NamingStyle NamingStyle;
 };