r232584 - in /branches/gcc-5-branch/gcc: Change...

[law@gcc.gnu.org]

Author: law
Date: Tue Jan 19 21:03:57 2016
New Revision: 232584

URL: https://gcc.gnu.org/viewcvs?rev=232584&root=gcc&view=rev
Log:


	Backport from mainline
	2016-01-12  Jeff Law  <law@redhat.com>

	PR tree-optimization/pr67755
	* tree-ssa-threadupdate.c (struct ssa_local_info_t): Add new field
	"need_profile_correction".
	(thread_block_1): Initialize new field to false by default.  If we
	have multiple thread paths through a common joiner to different
	final targets, then set new field to true.
	(compute_path_counts): Only do count adjustment when it's really
	needed.



Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.dg/tree-ssa/pr67755.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/testsuite/ChangeLog
    branches/gcc-5-branch/gcc/tree-ssa-threadupdate.c