[Bug target/22553] [4.6/4.7/4.8 regression] ICE building libstdc++

[olegendo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22553

Oleg Endo <olegendo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |olegendo at gcc dot gnu.org

--- Comment #22 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-07-18 20:12:22 UTC ---
On 'gcc version 4.8.0 20120718 (experimental)' I've commented out the
'if (targetm.small_register_classes_for_mode_p (VOIDmode))' block in sh.c
(sh_option_override) and ran some CSiBE result-size tests.

There is a total increase of +19746 bytes / +0.624419, but there are also some
individual decreases.
I've briefly compared some of the compiled files and it seems that with
-fschedule-insn enabled the interleaving of LS/MT/EX group instructions seems
to be a bit better, although I don't have any runtime numbers.

Kaz, if you have some time, could you do something like that
http://gcc.gnu.org/ml/gcc-patches/2005-09/msg01539.html
again (if possible with mpeg2dec) with GCC 4.8?