re PR middle-end/71734 (FAIL: libgomp.fortran/simd4.f90 -O3 -g execution test)

re PR middle-end/71734 (FAIL: libgomp.fortran/simd4.f90   -O3 -g  execution test)

gcc/

2016-07-18  Yuri Rumyantsev  <ysrumyan@gmail.com>

	PR tree-optimization/71734
	* tree-ssa-loop-im.c (ref_indep_loop_p_1): Add REF_LOOP argument which
	contains REF, use it to check safelen, assume that safelen value
	must be greater 1, fix style.
	(ref_indep_loop_p_2): Add REF_LOOP argument.
	(ref_indep_loop_p): Pass LOOP as additional argument to
	ref_indep_loop_p_2.

gcc/testsuite/

2016-07-18  Yuri Rumyantsev  <ysrumyan@gmail.com>

	PR tree-optimization/71734
	* g++.dg/vect/pr70729.cc: Delete redundant dg options, fix style.

From-SVN: r238435