r218855 - in /trunk/gcc: ChangeLog testsuite/Ch...

[amker@gcc.gnu.org]

Author: amker
Date: Thu Dec 18 02:53:42 2014
New Revision: 218855

URL: https://gcc.gnu.org/viewcvs?rev=218855&root=gcc&view=rev
Log:

	PR tree-optimization/62178
	* tree-ssa-loop-ivopts.c (cheaper_cost_with_cand): New function.
	(iv_ca_replace): New function.
	(try_improve_iv_set): New parameter try_replace_p.
	Break local optimal fixed-point by calling iv_ca_replace.
	(find_optimal_iv_set_1): Pass new argument to try_improve_iv_set.

	gcc/testsuite/ChangeLog
	PR tree-optimization/62178
	* gcc.target/aarch64/pr62178.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/aarch64/pr62178.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-ivopts.c