[clang-tidy] Use shrink_to_fit instead of copy and swap trick

The shrink_to_fit() method is more readable and more effective than
the copy and swap trick to reduce the capacity of a shrinkable container.
Note that, the shrink_to_fit() method is only available in C++11 and up.

Example:

std::vector<int>(v).swap(v); will be replaced with v.shrink_to_fit();

http://reviews.llvm.org/D7087

Patch by Gábor Horváth!

llvm-svn: 226912

1 files changed, 3 insertions, 0 deletions

diff --git a/clang-tools-extra/clang-tidy/readability/ReadabilityTidyModule.cpp b/clang-tools-extra/clang-tidy/readability/ReadabilityTidyModule.cpp
index 315912b128b..a92f8a4313d 100644
--- a/clang-tools-extra/clang-tidy/readability/ReadabilityTidyModule.cpp
+++ b/clang-tools-extra/clang-tidy/readability/ReadabilityTidyModule.cpp
@@ -15,6 +15,7 @@
 #include "ElseAfterReturnCheck.h"
 #include "FunctionSize.h"
 #include "RedundantSmartptrGet.h"
+#include "ShrinkToFitCheck.h"
 
 namespace clang {
 namespace tidy {
@@ -33,6 +34,8 @@ public:
         "readability-function-size");
     CheckFactories.registerCheck<RedundantSmartptrGet>(
         "readability-redundant-smartptr-get");
+    CheckFactories.registerCheck<ShrinkToFitCheck>(
+        "readability-shrink-to-fit");
   }
 };