[3/3] No need to vectorize simple only-live stmts

[3/3] No need to vectorize simple only-live stmts

2016-06-03  Alan Hayward  <alan.hayward@arm.com>

[3/3] No need to vectorize simple only-live stmts

gcc/
	* tree-vect-stmts.c (vect_stmt_relevant_p): Do not vectorize non live
	relevant stmts which are simple and invariant.
	* tree-vect-loop.c (vectorizable_live_operation): Check relevance
	instead of simple and invariant

testsuite/
	* gcc.dg/vect/vect-live-slp-5.c: Remove dg check.

From-SVN: r237065