[Bug c++/28871] New: massive C++ compile time slowdown

["bkoz at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

Sometime between Aug 1, 2006 and Aug 22, 2006 the time needed to run the g++
and libstdc++ testsuite ballooned. 

See this message and followups:
http://gcc.gnu.org/ml/gcc/2006-08/msg00398.html

Here are the specifics that I have:

20060724, make check-target-libstdc++
1145.687u 137.804s 23:13.98 92.0%       0+0k 0+0io 23pf+0w

20060822, make check-target-libstdc++
2624.876u 247.539s 55:42.82 85.9%       0+0k 0+0io 45pf+0w

Ouch. In that time, there have been some additions in the libstdc++ testsuite,
however it did not double in size. I've been trying to compile mainline
libstdc++ with 4.1.1 g++ to see if I can pin down the issue to a particular
component but there are a lot of incompatible changes, so comparing directly is
difficult to impossible.


-- 
           Summary: massive C++ compile time slowdown
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bkoz at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28871