* doc/invoke.texi (-fisolate-erroneous-paths): Document.

	* gimple-ssa-isolate-paths.c (gate_isolate_erroneous_paths):
	No longer check if we have __builtin_trap, assume it's
	available.

java/

	* builtins.c (initialize_builtins): Provide __builtin_trap.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204533 138bc75d-0d04-0410-961f-82ee72b054a4
        * config/arc/arc.c (arc_ifcvt): Use commutativity, e.g.:
        reg_a := reg_b + reg_a  ==>  reg_a := reg_a + reg_b


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204534 138bc75d-0d04-0410-961f-82ee72b054a4
	* Makefile.in: Regenerate.

Follow-up to r204173.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204536 138bc75d-0d04-0410-961f-82ee72b054a4
        * varpool.c (ctor_for_folding): Fix typo in comment.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204537 138bc75d-0d04-0410-961f-82ee72b054a4
2013-11-07  Cong Hou  <congh@google.com>

	PR tree-optimization/56764
	* tree-vect-loop-manip.c (vect_create_cond_for_alias_checks):
  	Combine alias checks if it is possible to amortize the runtime
  	overhead.  Return the number of alias checks after merging.
  	* tree-vect-data-refs.c (vect_prune_runtime_alias_test_list):
    	Use the function vect_create_cond_for_alias_checks () to check
    	the number of alias checks.

2013-11-07  Cong Hou  <congh@google.com>

    	* gcc.dg/vect/vect-alias-check.c: New.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204538 138bc75d-0d04-0410-961f-82ee72b054a4