[Bug c++/54710] moderately large tuple, with many gets, ballons compile time

cppljevans at suddenlink dot net gcc-bugzilla@gcc.gnu.org
Thu Sep 27 18:58:00 GMT 2012


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54710

Larry Evans <cppljevans at suddenlink dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #28292|0                           |1
        is obsolete|                            |

--- Comment #10 from Larry Evans <cppljevans at suddenlink dot net> 2012-09-27 18:58:17 UTC ---
Created attachment 28294
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28294
with optimized clang, still with optimized gcc, both with -O1

Remade clang with make ENABLE_OPTIMIZED=1.  Clang times improved a lot.

Now, the degradation of relative performance of gcc w.r.t. clang
is more dramatic.

Still, gcc does better at low LAST_LESS, but reaches break even
at lower LAST_LESS (about 8).



More information about the Gcc-bugs mailing list