Fix OMP SIMD clone mask register and query

The following removes the confusion around num_mask_args that was
added to properly "guess" the number of mask elements in a AVX512
mask that's just represented as int.  The actual mistake lies in
the mixup of 'ncopies' which is used to track the number of
OMP SIMD calls to be emitted rather than the number of input
vectors.  So this reverts the earlier r16-5374-g5c2fdfc24e343c,
uses the proper 'ncopies' for loop mask record/query and adjusts
the guessing of the SIMD arg mask elements.

	PR tree-optimization/122762
	PR tree-optimization/122736
	PR tree-optimization/122790
	* cgraph.h (cgraph_simd_clone_arg::linear_step): Document
	use for SIMD_CLONE_ARG_TYPE_MASK.
	* omp-simd-clone.cc (simd_clone_adjust_argument_types):
	Record the number of mask arguments in linear_step if
	mask_mode is not VOIDmode.
	* tree-vect-stmts.cc (vectorizable_simd_clone_call):
	Remove num_mask_args computation, use a proper ncopies
	to query/register loop masks, use linear_step for the
	number of mask arguments when determining the number of
	mask elements in a mask argument.

	* gcc.dg/vect/vect-simd-clone-23.c: New testcase.

0 files changed, 0 insertions, 0 deletions