tree-vect-loop-manip.c (rename_variables_in_bb): Add argument to allow renaming of PHI arguments on edges incoming from outer...

gcc/

	* tree-vect-loop-manip.c (rename_variables_in_bb): Add argument
	to allow renaming of PHI arguments on edges incoming from outer
	loop header, add corresponding check before start PHI iterator.
	(slpeel_tree_duplicate_loop_to_edge_cfg): Introduce new bool
	variable DUPLICATE_OUTER_LOOP and set it to true for outer loops
	with true force_vectorize.  Set-up dominator for outer loop too.
	Pass DUPLICATE_OUTER_LOOP as argument to rename_variables_in_bb.
	(slpeel_can_duplicate_loop_p): Allow duplicate of outer loop if it
	was marked with force_vectorize and has restricted cfg.
	(slpeel_tree_peel_loop_to_edge): Do not rename exit PHI uses in
	inner loop.
	* tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Do not
	do peeling for outer loops.

gcc/testsuite/

	* gcc.dg/vect/vect-outer-simd-2.c: New test.

From-SVN: r225923