[Bug target/43884] [4.4/4.5/4.6 Regression] Performance degradation for simple fibonacci numbers calculation

[hubicka at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43884

--- Comment #21 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-01-22 
21:47:43 UTC ---
Author: hubicka
Date: Sat Jan 22 21:47:40 2011
New Revision: 169136

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169136
Log:
    PR tree-optimization/43884
    PR lto/44334
    * predict.c (maybe_hot_frequency_p): Use entry block frequency as an base.
    * doc/invoke.texi (hot-bb-frequency-fraction): Update docs.
    * gcc.dg/autopar/outer-2.c: Increase array size.
    * gcc.dg/tree-ssa/ldist-pr45948.c: Update test.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/predict.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/autopar/outer-2.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ldist-pr45948.c