WeiChungChang added a comment. Here gives the comparison between GCC & LLVM's std c++ library.
It is shown that libc++ soon suffers from rotate speed under limited allocated buffer and slower than GCC's corresponding version. Both LLVM & GCC run the same test program. F5782010: 0124.png <https://reviews.llvm.org/F5782010> | | full | 25% | 12.5% | 6.25% | 3.125% | | LLVM | 0.238614667 | 0.733295778 | 1.137285111 | 1.348671667 | 1.603639556 | | GCC | 0.368778444 | 0.351659222 | 0.532976333 | 0.660785778 | 0.832495444 | | Repository: rCXX libc++ https://reviews.llvm.org/D42357 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
