[Bug rtl-optimization/39077] [4.3/4.4/4.5/4.6 Regression] GCSE-optimization causes enormous binary size increase (~20 times !)

[law at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39077

--- Comment #21 from Jeffrey A. Law <law at gcc dot gnu.org> 2011-01-13 
13:41:09 UTC ---
Author: law
Date: Thu Jan 13 13:41:03 2011
New Revision: 168747

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168747
Log:
    * PR rtl-optimization/39077
    * doc/invoke.texi (max-gcse-insertion-ratio): Document.
    * params.h (MAX_GCSE_INSERTION_RATIO): Define.
    * params.def (PARAM_MAX_GCSE_INSERTION_RATIO): Define.
    * lcm.c (pre_edge_lcm): Properly initialize output sbitmaps.
    * gcse.c (prune_insertions_deletions): New function.
    (compute_pre_data): Use it.



Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/doc/invoke.texi
    trunk/gcc/gcse.c
    trunk/gcc/lcm.c
    trunk/gcc/params.def
    trunk/gcc/params.h