tree 29cc23eb0ebd0a84e4032db3fc3396143bdfddea
parent 683f11843974f0bdf42f79cdcbb0c2b43c7b81b0
author Richard Biener <rguenther@suse.de> 1656935604 +0200
committer Richard Biener <rguenther@suse.de> 1656935805 +0200

Revert update-ssa assert in vectorizer

The following reverts the just added assert that virtual SSA does not
need updating.  It instead goes for a select whitelist of transforms
known to be prone to difficulties with virtual SSA update.

	* tree-vect-loop-manip.cc (vect_do_peeling): Revert assert
	and update virtual SSA form again.  Assert we do so for
	a known set of transforms only.
	* tree-vectorizer.h (vec_info::any_known_not_updated_vssa): New.
	* tree-vect-stmts.cc (vectorizable_load): When vectorizing
	using load-lanes allow virtual SSA update.