* cgraph.h (enum cgraph_simd_clone_arg_type): New.
	(struct cgraph_simd_clone_arg, struct cgraph_simd_clone): New.
	(struct cgraph_node): Add simdclone and simd_clones fields.
	* config/i386/i386.c (ix86_simd_clone_compute_vecsize_and_simdlen,
	ix86_simd_clone_adjust, ix86_simd_clone_usable): New functions.
	(TARGET_SIMD_CLONE_COMPUTE_VECSIZE_AND_SIMDLEN,
	TARGET_SIMD_CLONE_ADJUST, TARGET_SIMD_CLONE_USABLE): Define.
	* doc/tm.texi.in (TARGET_SIMD_CLONE_COMPUTE_VECSIZE_AND_SIMDLEN,
	TARGET_SIMD_CLONE_ADJUST, TARGET_SIMD_CLONE_USABLE): Add.
	* doc/tm.texi: Regenerated.
	* ggc.h (ggc_alloc_cleared_simd_clone_stat): New function.
	* ipa-cp.c (determine_versionability): Fail if "omp declare simd"
	attribute is present.
	* omp-low.c: Include pretty-print.h, ipa-prop.h and tree-eh.h.
	(simd_clone_vector_of_formal_parm_types): New function.
	(simd_clone_struct_alloc, simd_clone_struct_copy,
	simd_clone_vector_of_formal_parm_types, simd_clone_clauses_extract,
	simd_clone_compute_base_data_type, simd_clone_mangle,
	simd_clone_create, simd_clone_adjust_return_type,
	create_tmp_simd_array, simd_clone_adjust_argument_types,
	simd_clone_init_simd_arrays): New functions.
	(struct modify_stmt_info): New type.
	(ipa_simd_modify_stmt_ops, ipa_simd_modify_function_body,
	simd_clone_adjust, expand_simd_clones, ipa_omp_simd_clone): New
	functions.
	(pass_data_omp_simd_clone): New variable.
	(pass_omp_simd_clone): New class.
	(make_pass_omp_simd_clone): New function.
	* passes.def (pass_omp_simd_clone): New.
	* target.def (TARGET_SIMD_CLONE_COMPUTE_VECSIZE_AND_SIMDLEN,
	TARGET_SIMD_CLONE_ADJUST, TARGET_SIMD_CLONE_USABLE): New target
	hooks.
	* target.h (struct cgraph_node, struct cgraph_simd_node): Declare.
	* tree-core.h (OMP_CLAUSE_LINEAR_VARIABLE_STRIDE): Document.
	* tree.h (OMP_CLAUSE_LINEAR_VARIABLE_STRIDE): Define.
	* tree-pass.h (make_pass_omp_simd_clone): New prototype.
	* tree-vect-data-refs.c: Include cgraph.h.
	(vect_analyze_data_refs): Inline by hand find_data_references_in_loop
	and find_data_references_in_bb, if find_data_references_in_stmt
	fails, still allow calls to #pragma omp declare simd functions
	in #pragma omp simd loops unless they contain data references among
	the call arguments or in lhs.
	* tree-vect-loop.c (vect_determine_vectorization_factor): Handle
	calls with no lhs.
	(vect_transform_loop): Allow NULL STMT_VINFO_VECTYPE for calls without
	lhs.
	* tree-vectorizer.h (enum stmt_vec_info_type): Add
	call_simd_clone_vec_info_type.
	(struct _stmt_vec_info): Add simd_clone_fndecl field.
	(STMT_VINFO_SIMD_CLONE_FNDECL): Define.
	* tree-vect-stmts.c: Include tree-ssa-loop.h,
	tree-scalar-evolution.h and cgraph.h.
	(vectorizable_call): Handle calls without lhs.  Assert
	!stmt_can_throw_internal instead of failing for it.  Don't update
	EH stuff.
	(struct simd_call_arg_info): New.
	(vectorizable_simd_clone_call): New function.
	(vect_transform_stmt): Call it.
	(vect_analyze_stmt): Likewise.  Allow NULL STMT_VINFO_VECTYPE for
	calls without lhs.
	* ipa-prop.c (ipa_add_new_function): Only call ipa_analyze_node
	if cgraph_function_with_gimple_body_p is true.
c/
	* c-decl.c (c_builtin_function_ext_scope): Avoid binding if
	external_scope is NULL.
cp/
	* semantics.c (finish_omp_clauses): For #pragma omp declare simd
	linear clause step call maybe_constant_value.
testsuite/
	* g++.dg/gomp/declare-simd-1.C (f38): Make sure
	simdlen is a power of two.
	* gcc.dg/gomp/simd-clones-2.c: Compile on all targets.
	Remove -msse2.  Adjust regexps for name mangling changes.
	* gcc.dg/gomp/simd-clones-3.c: Likewise.
	* gcc.dg/vect/vect-simd-clone-1.c: New test.
	* gcc.dg/vect/vect-simd-clone-2.c: New test.
	* gcc.dg/vect/vect-simd-clone-3.c: New test.
	* gcc.dg/vect/vect-simd-clone-4.c: New test.
	* gcc.dg/vect/vect-simd-clone-5.c: New test.
	* gcc.dg/vect/vect-simd-clone-6.c: New test.
	* gcc.dg/vect/vect-simd-clone-7.c: New test.
	* gcc.dg/vect/vect-simd-clone-8.c: New test.
	* gcc.dg/vect/vect-simd-clone-9.c: New test.
	* gcc.dg/vect/vect-simd-clone-10.c: New test.
	* gcc.dg/vect/vect-simd-clone-10.h: New file.
	* gcc.dg/vect/vect-simd-clone-10a.c: New file.
	* gcc.dg/vect/vect-simd-clone-11.c: New test.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>

From-SVN: r205442