r248945 - in /trunk/gcc: ChangeLog cfgbuild.c

[hubicka@gcc.gnu.org]

Author: hubicka
Date: Wed Jun  7 06:42:43 2017
New Revision: 248945

URL: https://gcc.gnu.org/viewcvs?rev=248945&root=gcc&view=rev
Log:

	* cfgbuild.c (find_bb_boundaries): Initialize profile of split blocks.
	(compute_outgoing_frequencies): Also initialize zero counts.
	(find_many_sub_basic_blocks): Do not produce uninitialized profile
	around loops; preserve more of profile when nothing changes.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgbuild.c