PR lto/59326
	* omp-low.c (simd_clone_create): Return NULL if for definition
	!cgraph_function_with_gimple_body_p (old_node).  Call cgraph_get_body
	before calling cgraph_function_versioning.
	(expand_simd_clones): Look for "omp declare simd" attribute first.
	Don't check targetm.simd_clone.compute_vecsize_and_simdlen here.
	Punt if node->global.inlined_to.
	(pass_omp_simd_clone::gate): Also enable if in_lto_p && !flag_wpa.
	Disable pass if targetm.simd_clone.compute_vecsize_and_simdlen is NULL.
	* lto-streamer-out.c (hash_tree): Handle OMP_CLAUSE.
lto/
	* lto.c (compare_tree_sccs_1): Handle OMP_CLAUSE.
testsuite/
	* gcc.dg/vect/vect-simd-clone-12.c: New test.
	* gcc.dg/vect/vect-simd-clone-12a.c: New test.
	* gcc.dg/vect/vect-simd-clone-10a.c: Remove extern keywords.

Co-Authored-By: Richard Biener <rguenther@suse.de>

From-SVN: r205514