tree-optimization/116842 - vectorizer load hosting breaks UID order

tree-optimization/116842 - vectorizer load hosting breaks UID order

The following fixes the case when vectorizing a load hoists an invariant
load and dependent stmts, thereby breaking UID order of said stmts.
While we duplicate the load we just move the dependences.

	PR tree-optimization/116842
	* tree-vect-stmts.cc (hoist_defs_of_uses): Sort stmts to hoist
	after UID to avoid breaking vect_stmt_dominates_stmt_p.

	* g++.dg/torture/pr116842.C: New testcase.