* internal-fn.def (GOMP_SIMD_LANE, GOMP_SIMD_VF,

	GOMP_SIMD_LAST_LANE): New internal functions.
	* omp-low.c (omp_max_vf, lower_rec_simd_input_clauses): New
	functions.
	(lower_rec_input_clauses): Add fd argument.  Enforce max_vf = 1
	if any data sharing clauses mention VLAs or for array reductions.
	Handle OMP_CLAUSE__LOOPTEMP_ clause.  For
	OMP_CLAUSE_{{FIRST,LAST,}PRIVATE,LINEAR,REDUCTION} on SIMD
	constructs use "omp simd array" temporaries.  For OMP_CLAUSE_LINEAR
	adjust initial value in combined constructs.  Don't emit any
	barriers for #pragma omp distribute.  If max_vf is lower than
	current safelen, prepend an OMP_CLAUSE_SAFELEN clause.
	(lower_lastprivate_clauses): Handle "omp simd array" temporaries.
	(lower_reduction_clauses): Exit early for #pragma omp simd.
	(expand_omp_simd): Set loop->simduid from OMP_CLAUSE__SIMDUID_
	and cfun->has_simduid_loops if set.
	If OMP_CLAUSE_SAFELEN (1) is present, don't set loop->safelen
	nor loop->force_vect.
	(lower_omp_sections, lower_omp_single, lower_omp_taskreg): Adjust
	lower_rec_input_clauses callers.
	(lower_omp_for_lastprivate): Unshare vinit.
	(lower_omp_for): Add OMP_CLAUSE__LOOPTEMP_ clauses before calling
	lower_rec_input_clauses.  Adjust lower_rec_input_clauses caller.
	Always call lower_omp_for_lastprivate at the same place, even for
	#pragma omp simd.
	* tree.h (enum clause_code): Add OMP_CLAUSE__SIMDUID_.
	(OMP_CLAUSE__SIMDUID__DECL): Define.
	* tree-vectorizer.c: Include hash-table.h and tree-ssa-propagate.h.
	(simduid_to_vf, decl_to_simduid): New classes.
	(simduid_to_vf::hash, simduid_to_vf::equal, decl_to_simduid::hash,
	decl_to_simduid::equal): New methods.
	(note_simd_array_uses_struct): New struct.
	(adjust_simduid_builtins, note_simd_array_uses_cb,
	note_simd_array_uses): New functions.
	(vectorize_loops): Adjust "omp simd array" temporary array sizes
	and fold GOMP_SIMD_{LANE,VF,LAST_LANE} builtins.
	* tree-vectorizer.h (struct _stmt_vec_info): Add simd_lane_access_p
	field.
	(STMT_VINFO_SIMD_LANE_ACCESS_P): Define.
	* tree-data-ref.c (get_references_in_stmt): Allow GOMP_SIMD_LANE
	builtins in their own loops.
	* tree-inline.c (copy_cfg_body): Propagate has_force_vect_loops
	and has_simduid_loops.
	* function.h (struct function): Add has_simduid_loops field.
	* tree-ssa-ccp.c (likely_value): For GOMP_SIMD_{LANE,LAST_LANE,VF}
	builtins ignore the undefined magic argument.
	* tree-pretty-print.c (dump_omp_clause): Handle OMP_CLAUSE__SIMDUID_
	clause.
	* cfgloop.h (struct loop): Add simduid field.
	* Makefile.in (tree-vectorizer.o): Depend on $(HASH_TABLE_H)
	and tree-ssa-propagate.h.
	* tree-vect-data-refs.c (vect_analyze_data_refs): Check for SIMD
	lane access.
	* gimplify.c (omp_add_variable): Handle combination of aligned
	clause and some data sharing clause for the same decl.
	(gimplify_omp_for): For collapse (2) and above simd loops
	predetermine loop iteration vars as lastprivate instead of
	linear.
	* tree.c (omp_clause_num_ops, omp_clause_code_name): Add
	entries for OMP_CLAUSE__SIMDUID_.
	(walk_tree_1): Handle OMP_CLAUSE__SIMDUID_.
	* tree-vect-loop.c (vectorizable_live_operation): Handle live
	GOMP_SIMD_LANE result.
	* tree-vect-stmts.c (vectorizable_call): Vectorize GOMP_SIMD_LANE
	builtin.
	(vectorizable_store, vectorizable_load): Handle
	STMT_VINFO_SIMD_LANE_ACCESS_P.
	* internal-fn.c (expand_GOMP_SIMD_LANE, expand_GOMP_SIMD_VF,
	expand_GOMP_SIMD_LAST_LANE): New functions.

	* testsuite/libgomp.c++/simd-1.C: New test.
	* testsuite/libgomp.c++/simd-2.C: New test.
	* testsuite/libgomp.c++/simd-3.C: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gomp-4_0-branch@200536 138bc75d-0d04-0410-961f-82ee72b054a4

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