tree-optimization/101809 - support emulated gather for double[int]

This adds emulated gather support for index vectors with more
elements than the data vector.  The internal function gather
vectorization code doesn't currently handle this (but the builtin
decl code does).  This allows vectorization of double data gather
with int indexes on 32bit platforms where there isn't an implicit
widening to 64bit present.

2021-08-10  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/101809
	* tree-vect-stmts.c (get_load_store_type): Allow emulated
	gathers with offset vector nunits being a constant multiple
	of the data vector nunits.
	(vect_get_gather_scatter_ops): Use the appropriate nunits
	for the offset vector defs.
	(vectorizable_store): Adjust call to
	vect_get_gather_scatter_ops.
	(vectorizable_load): Likewise.  Handle the case of less
	offset vectors than data vectors.

0 files changed, 0 insertions, 0 deletions