Move even/odd validity check from supportable_widening_operation to caller

The following moves the incomplete validity check to use
WIDEN_MULT_{EVEN,ODD} to the caller of supportable_widening_operation
where we have access to more (but not enough) information.  I have
made the test conservative enough I hope.  For the testcase what was
broken is that it uses a SLP reduction where lane-swizzling isn't
valid.

	PR tree-optimization/123002
	* tree-vectorizer.h (supportable_widening_operation): Remove
	vinfo and stmt_info parameters, add flag to indicate whether
	the context would allow OP_{EVEN,ODD}.
	* tree-vect-patterns.cc (vect_recog_abd_pattern): Adjust
	and pass false.
	(vect_recog_widen_op_pattern): Likewise.
	(vect_recog_widen_abd_pattern): Likewise.
	* tree-vect-stmts.cc (vectorizable_conversion): Move
	even/odd validity check here, from supportable_widening_operation.
	Adjust it to be conservative.
	(supportable_widening_operation): Get flag whether even/odd
	is OK to use and remove then unused parameters and code.

	* gcc.dg/vect/vect-pr123002.c: New testcase.

0 files changed, 0 insertions, 0 deletions