tree-optimization/101003 - use pattern defs when linearizing

We of course have to use pattern stmt defs for the linearized
chain operands which is what I failed to ensure.

2021-06-10  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/101003
	* tree-vect-slp.c (vect_build_slp_tree_2): Appropriately
	use the pattern stmt defs when linearizing a chain.
1 file changed