path: root/gcc/ChangeLog

2018-01-15  Andrew Waterman  <andrew@sifive.com>

	* config/riscv/riscv.c (riscv_rtx_costs) <MULT>: Increase cost if
	!TARGET_MUL.
	<UDIV>: Increase cost if !TARGET_DIV.

2018-01-15  Segher Boessenkool  <segher@kernel.crashing.org>

	* config/rs6000/rs6000.md (define_attr "type"): Remove delayed_cr.
	(define_attr "cr_logical_3op"): New.
	(cceq_ior_compare): Adjust.
	(cceq_ior_compare_complement): Adjust.
	(*cceq_rev_compare): Adjust.
	* config/rs6000/rs6000.c (rs6000_adjust_cost): Adjust.
	(is_cracked_insn): Adjust.
	(insn_must_be_first_in_group): Adjust.
	* config/rs6000/40x.md: Adjust.
	* config/rs6000/440.md: Adjust.
	* config/rs6000/476.md: Adjust.
	* config/rs6000/601.md: Adjust.
	* config/rs6000/603.md: Adjust.
	* config/rs6000/6xx.md: Adjust.
	* config/rs6000/7450.md: Adjust.
	* config/rs6000/7xx.md: Adjust.
	* config/rs6000/8540.md: Adjust.
	* config/rs6000/cell.md: Adjust.
	* config/rs6000/e300c2c3.md: Adjust.
	* config/rs6000/e500mc.md: Adjust.
	* config/rs6000/e500mc64.md: Adjust.
	* config/rs6000/e5500.md: Adjust.
	* config/rs6000/e6500.md: Adjust.
	* config/rs6000/mpc.md: Adjust.
	* config/rs6000/power4.md: Adjust.
	* config/rs6000/power5.md: Adjust.
	* config/rs6000/power6.md: Adjust.
	* config/rs6000/power7.md: Adjust.
	* config/rs6000/power8.md: Adjust.
	* config/rs6000/power9.md: Adjust.
	* config/rs6000/rs64.md: Adjust.
	* config/rs6000/titan.md: Adjust.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/predicates.md (indirect_branch_operand): Rewrite
	ix86_indirect_branch_register logic.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/constraints.md (Bs): Update
	ix86_indirect_branch_register check.  Don't check
	ix86_indirect_branch_register with GOT_memory_operand.
	(Bw): Likewise.
	* config/i386/predicates.md (GOT_memory_operand): Don't check
	ix86_indirect_branch_register here.
	(GOT32_symbol_operand): Likewise.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/predicates.md (constant_call_address_operand):
	Rewrite ix86_indirect_branch_register logic.
	(sibcall_insn_operand): Likewise.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/constraints.md (Bs): Replace
	ix86_indirect_branch_thunk_register with
	ix86_indirect_branch_register.
	(Bw): Likewise.
	* config/i386/i386.md (indirect_jump): Likewise.
	(tablejump): Likewise.
	(*sibcall_memory): Likewise.
	(*sibcall_value_memory): Likewise.
	Peepholes of indirect call and jump via memory: Likewise.
	* config/i386/i386.opt: Likewise.
	* config/i386/predicates.md (indirect_branch_operand): Likewise.
	(GOT_memory_operand): Likewise.
	(call_insn_operand): Likewise.
	(sibcall_insn_operand): Likewise.
	(GOT32_symbol_operand): Likewise.

2018-01-15  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/83837
	* omp-expand.c (expand_omp_atomic_pipeline): Use loaded_val
	type rather than type addr's type points to.
	(expand_omp_atomic_mutex): Likewise.
	(expand_omp_atomic): Likewise.

2018-01-15  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/83839
	* config/i386/i386.c (output_indirect_thunk_function): Use
	ASM_OUTPUT_LABEL, instead of ASM_OUTPUT_DEF, for TARGET_MACHO
	for  __x86_return_thunk.

2018-01-15  Richard Biener  <rguenther@suse.de>

	PR middle-end/83850
	* expmed.c (extract_bit_field_1): Fix typo.

2018-01-15  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

	PR target/83687
	* config/arm/iterators.md (VF): New mode iterator.
	* config/arm/neon.md (neon_vabd<mode>_2): Use the above.
	Remove integer-related logic from pattern.
	(neon_vabd<mode>_3): Likewise.

2018-01-15  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/82694
	* common.opt (fstrict-overflow): No longer an alias.
	(fwrapv-pointer): New option.
	* tree.h (TYPE_OVERFLOW_WRAPS, TYPE_OVERFLOW_UNDEFINED): Define
	also for pointer types based on flag_wrapv_pointer.
	* opts.c (common_handle_option) <case OPT_fstrict_overflow>: Set
	opts->x_flag_wrap[pv] to !value, clear opts->x_flag_trapv if
	opts->x_flag_wrapv got set.
	* fold-const.c (fold_comparison, fold_binary_loc): Revert 2017-08-01
	changes, just use TYPE_OVERFLOW_UNDEFINED on pointer type instead of
	POINTER_TYPE_OVERFLOW_UNDEFINED.
	* match.pd: Likewise in address comparison pattern.
	* doc/invoke.texi: Document -fwrapv and -fstrict-overflow.

2018-01-15  Richard Biener  <rguenther@suse.de>

	PR lto/83804
	* tree.c (free_lang_data_in_type): Always unlink TYPE_DECLs
	from TYPE_FIELDS.  Free TYPE_BINFO if not used by devirtualization.
	Reset type names to their identifier if their TYPE_DECL doesn't
	have linkage (and thus is used for ODR and devirt).
	(save_debug_info_for_decl): Remove.
	(save_debug_info_for_type): Likewise.
	(add_tree_to_fld_list): Adjust.
	* tree-pretty-print.c (dump_generic_node): Make dumping of
	type names more robust.

2018-01-15  Richard Biener  <rguenther@suse.de>

	* BASE-VER: Bump to 8.0.1.

2018-01-14  Martin Sebor  <msebor@redhat.com>

	PR other/83508
	* builtins.c (check_access): Avoid warning when the no-warning bit
	is set.

2018-01-14  Cory Fields  <cory-nospam-@coryfields.com>

	* tree-ssa-loop-im.c (sort_bbs_in_loop_postorder_cmp): Stabilize sort.
	* ira-color (allocno_hard_regs_compare): Likewise.

2018-01-14  Nathan Rossi  <nathan@nathanrossi.com>

        PR target/83013
        * config/microblaze/microblaze.c (microblaze_asm_output_ident):
        Use .pushsection/.popsection.

2018-01-14  Martin Sebor  <msebor@redhat.com>

	PR c++/81327
	* doc/invoke.texi (-Wlass-memaccess): Document suppression by casting.

2018-01-14  Jakub Jelinek  <jakub@redhat.com>

	* config.gcc (i[34567]86-*-*): Remove one duplicate gfniintrin.h
	entry from extra_headers.
	(x86_64-*-*): Remove two duplicate gfniintrin.h entries from
	extra_headers, make the list bitwise identical to the i?86-*-* one.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386.c (ix86_set_indirect_branch_type): Disallow
	-mcmodel=large with -mindirect-branch=thunk,
	-mindirect-branch=thunk-extern, -mfunction-return=thunk and
	-mfunction-return=thunk-extern.
	* doc/invoke.texi: Document -mcmodel=large is incompatible with
	-mindirect-branch=thunk, -mindirect-branch=thunk-extern,
	-mfunction-return=thunk and -mfunction-return=thunk-extern.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386.c (print_reg): Print the name of the full
	integer register without '%'.
	(ix86_print_operand): Handle 'V'.
	 * doc/extend.texi: Document 'V' modifier.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/constraints.md (Bs): Disallow memory operand for
	-mindirect-branch-register.
	(Bw): Likewise.
	* config/i386/predicates.md (indirect_branch_operand): Likewise.
	(GOT_memory_operand): Likewise.
	(call_insn_operand): Likewise.
	(sibcall_insn_operand): Likewise.
	(GOT32_symbol_operand): Likewise.
	* config/i386/i386.md (indirect_jump): Call convert_memory_address
	for -mindirect-branch-register.
	(tablejump): Likewise.
	(*sibcall_memory): Likewise.
	(*sibcall_value_memory): Likewise.
	Disallow peepholes of indirect call and jump via memory for
	-mindirect-branch-register.
	(*call_pop): Replace m with Bw.
	(*call_value_pop): Likewise.
	(*sibcall_pop_memory): Replace m with Bs.
	* config/i386/i386.opt (mindirect-branch-register): New option.
	* doc/invoke.texi: Document -mindirect-branch-register option.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386-protos.h (ix86_output_function_return): New.
	* config/i386/i386.c (ix86_set_indirect_branch_type): Also
	set function_return_type.
	(indirect_thunk_name): Add ret_p to indicate thunk for function
	return.
	(output_indirect_thunk_function): Pass false to
	indirect_thunk_name.
	(ix86_output_indirect_branch_via_reg): Likewise.
	(ix86_output_indirect_branch_via_push): Likewise.
	(output_indirect_thunk_function): Create alias for function
	return thunk if regno < 0.
	(ix86_output_function_return): New function.
	(ix86_handle_fndecl_attribute): Handle function_return.
	(ix86_attribute_table): Add function_return.
	* config/i386/i386.h (machine_function): Add
	function_return_type.
	* config/i386/i386.md (simple_return_internal): Use
	ix86_output_function_return.
	(simple_return_internal_long): Likewise.
	* config/i386/i386.opt (mfunction-return=): New option.
	(indirect_branch): Mention -mfunction-return=.
	* doc/extend.texi: Document function_return function attribute.
	* doc/invoke.texi: Document -mfunction-return= option.

2018-01-14  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386-opts.h (indirect_branch): New.
	* config/i386/i386-protos.h (ix86_output_indirect_jmp): Likewise.
	* config/i386/i386.c (ix86_using_red_zone): Disallow red-zone
	with local indirect jump when converting indirect call and jump.
	(ix86_set_indirect_branch_type): New.
	(ix86_set_current_function): Call ix86_set_indirect_branch_type.
	(indirectlabelno): New.
	(indirect_thunk_needed): Likewise.
	(indirect_thunk_bnd_needed): Likewise.
	(indirect_thunks_used): Likewise.
	(indirect_thunks_bnd_used): Likewise.
	(INDIRECT_LABEL): Likewise.
	(indirect_thunk_name): Likewise.
	(output_indirect_thunk): Likewise.
	(output_indirect_thunk_function): Likewise.
	(ix86_output_indirect_branch_via_reg): Likewise.
	(ix86_output_indirect_branch_via_push): Likewise.
	(ix86_output_indirect_branch): Likewise.
	(ix86_output_indirect_jmp): Likewise.
	(ix86_code_end): Call output_indirect_thunk_function if needed.
	(ix86_output_call_insn): Call ix86_output_indirect_branch if
	needed.
	(ix86_handle_fndecl_attribute): Handle indirect_branch.
	(ix86_attribute_table): Add indirect_branch.
	* config/i386/i386.h (machine_function): Add indirect_branch_type
	and has_local_indirect_jump.
	* config/i386/i386.md (indirect_jump): Set has_local_indirect_jump
	to true.
	(tablejump): Likewise.
	(*indirect_jump): Use ix86_output_indirect_jmp.
	(*tablejump_1): Likewise.
	(simple_return_indirect_internal): Likewise.
	* config/i386/i386.opt (mindirect-branch=): New option.
	(indirect_branch): New.
	(keep): Likewise.
	(thunk): Likewise.
	(thunk-inline): Likewise.
	(thunk-extern): Likewise.
	* doc/extend.texi: Document indirect_branch function attribute.
	* doc/invoke.texi: Document -mindirect-branch= option.

2018-01-14  Jan Hubicka  <hubicka@ucw.cz>

	PR ipa/83051
	* ipa-inline.c (edge_badness): Tolerate roundoff errors.

2018-01-14  Richard Sandiford  <richard.sandiford@linaro.org>

	* ipa-inline.c (want_inline_small_function_p): Return false if
	inlining has already failed with CIF_FINAL_ERROR.
	(update_caller_keys): Call want_inline_small_function_p before
	can_inline_edge_p.
	(update_callee_keys): Likewise.

2018-01-10  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	* config/rs6000/rs6000-p8swap.c (rs6000_sum_of_two_registers_p):
	New function.
	(rs6000_quadword_masked_address_p): Likewise.
	(quad_aligned_load_p): Likewise.
	(quad_aligned_store_p): Likewise.
	(const_load_sequence_p): Add comment to describe the outer-most loop.
	(mimic_memory_attributes_and_flags): New function.
	(rs6000_gen_stvx): Likewise.
	(replace_swapped_aligned_store): Likewise.
	(rs6000_gen_lvx): Likewise.
	(replace_swapped_aligned_load): Likewise.
	(replace_swapped_load_constant): Capitalize argument name in
	comment describing this function.
	(rs6000_analyze_swaps): Add a third pass to search for vector loads
	and stores that access quad-word aligned addresses and replace
	with stvx or lvx instructions when appropriate.
	* config/rs6000/rs6000-protos.h (rs6000_sum_of_two_registers_p):
	New function prototype.
	(rs6000_quadword_masked_address_p): Likewise.
	(rs6000_gen_lvx): Likewise.
	(rs6000_gen_stvx): Likewise.
	* config/rs6000/vsx.md (*vsx_le_perm_load_<mode>): For modes
	VSX_D (V2DF, V2DI), modify this split to select lvx instruction
	when memory address is aligned.
	(*vsx_le_perm_load_<mode>): For modes VSX_W (V4SF, V4SI), modify
	this split to select lvx instruction when memory address is aligned.
	(*vsx_le_perm_load_v8hi): Modify this split to select lvx
	instruction when memory address is aligned.
	(*vsx_le_perm_load_v16qi): Likewise.
	(four unnamed splitters): Modify to select the stvx instruction
	when memory is aligned.

2018-01-13  Jan Hubicka  <hubicka@ucw.cz>

	* predict.c (determine_unlikely_bbs): Handle correctly BBs
	which appears in the queue multiple times.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vectorizer.h (vec_lower_bound): New structure.
	(_loop_vec_info): Add check_nonzero and lower_bounds.
	(LOOP_VINFO_CHECK_NONZERO): New macro.
	(LOOP_VINFO_LOWER_BOUNDS): Likewise.
	(LOOP_REQUIRES_VERSIONING_FOR_ALIAS): Check lower_bounds too.
	* tree-data-ref.h (dr_with_seg_len): Add access_size and align
	fields.  Make seg_len the distance travelled, not including the
	access size.
	(dr_direction_indicator): Declare.
	(dr_zero_step_indicator): Likewise.
	(dr_known_forward_stride_p): Likewise.
	* tree-data-ref.c: Include stringpool.h, tree-vrp.h and
	tree-ssanames.h.
	(runtime_alias_check_p): Allow runtime alias checks with
	variable strides.
	(operator ==): Compare access_size and align.
	(prune_runtime_alias_test_list): Rework for new distinction between
	the access_size and seg_len.
	(create_intersect_range_checks_index): Likewise.  Cope with polynomial
	segment lengths.
	(get_segment_min_max): New function.
	(create_intersect_range_checks): Use it.
	(dr_step_indicator): New function.
	(dr_direction_indicator): Likewise.
	(dr_zero_step_indicator): Likewise.
	(dr_known_forward_stride_p): Likewise.
	* tree-loop-distribution.c (data_ref_segment_size): Return
	DR_STEP * (niters - 1).
	(compute_alias_check_pairs): Update call to the dr_with_seg_len
	constructor.
	* tree-vect-data-refs.c (vect_check_nonzero_value): New function.
	(vect_preserves_scalar_order_p): New function, split out from...
	(vect_analyze_data_ref_dependence): ...here.  Check for zero steps.
	(vect_vfa_segment_size): Return DR_STEP * (length_factor - 1).
	(vect_vfa_access_size): New function.
	(vect_vfa_align): Likewise.
	(vect_compile_time_alias): Take access_size_a and access_b arguments.
	(dump_lower_bound): New function.
	(vect_check_lower_bound): Likewise.
	(vect_small_gap_p): Likewise.
	(vectorizable_with_step_bound_p): Likewise.
	(vect_prune_runtime_alias_test_list): Ignore cross-iteration
	depencies if the vectorization factor is 1.  Convert the checks
	for nonzero steps into checks on the bounds of DR_STEP.  Try using
	a bunds check for variable steps if the minimum required step is
	relatively small. Update calls to the dr_with_seg_len
	constructor and to vect_compile_time_alias.
	* tree-vect-loop-manip.c (vect_create_cond_for_lower_bounds): New
	function.
	(vect_loop_versioning): Call it.
	* tree-vect-loop.c (vect_analyze_loop_2): Clear LOOP_VINFO_LOWER_BOUNDS
	when retrying.
	(vect_estimate_min_profitable_iters): Account for any bounds checks.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* doc/sourcebuild.texi (vect_scatter_store): Document.
	* optabs.def (scatter_store_optab, mask_scatter_store_optab): New
	optabs.
	* doc/md.texi (scatter_store@var{m}, mask_scatter_store@var{m}):
	Document.
	* genopinit.c (main): Add supports_vec_scatter_store and
	supports_vec_scatter_store_cached to target_optabs.
	* gimple.h (gimple_expr_type): Handle IFN_SCATTER_STORE and
	IFN_MASK_SCATTER_STORE.
	* internal-fn.def (SCATTER_STORE, MASK_SCATTER_STORE): New internal
	functions.
	* internal-fn.h (internal_store_fn_p): Declare.
	(internal_fn_stored_value_index): Likewise.
	* internal-fn.c (scatter_store_direct): New macro.
	(expand_scatter_store_optab_fn): New function.
	(direct_scatter_store_optab_supported_p): New macro.
	(internal_store_fn_p): New function.
	(internal_gather_scatter_fn_p): Handle IFN_SCATTER_STORE and
	IFN_MASK_SCATTER_STORE.
	(internal_fn_mask_index): Likewise.
	(internal_fn_stored_value_index): New function.
	(internal_gather_scatter_fn_supported_p): Adjust operand numbers
	for scatter stores.
	* optabs-query.h (supports_vec_scatter_store_p): Declare.
	* optabs-query.c (supports_vec_scatter_store_p): New function.
	* tree-vectorizer.h (vect_get_store_rhs): Declare.
	* tree-vect-data-refs.c (vect_analyze_data_ref_access): Return
	true for scatter stores.
	(vect_gather_scatter_fn_p): Handle scatter stores too.
	(vect_check_gather_scatter): Consider using scatter stores if
	supports_vec_scatter_store_p.
	* tree-vect-patterns.c (vect_try_gather_scatter_pattern): Handle
	scatter stores too.
	* tree-vect-stmts.c (exist_non_indexing_operands_for_use_p): Use
	internal_fn_stored_value_index.
	(check_load_store_masking): Handle scatter stores too.
	(vect_get_store_rhs): Make public.
	(vectorizable_call): Use internal_store_fn_p.
	(vectorizable_store): Handle scatter store internal functions.
	(vect_transform_stmt): Compare GROUP_STORE_COUNT with GROUP_SIZE
	when deciding whether the end of the group has been reached.
	* config/aarch64/aarch64.md (UNSPEC_ST1_SCATTER): New unspec.
	* config/aarch64/aarch64-sve.md (scatter_store<mode>): New expander.
	(mask_scatter_store<mode>): New insns.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vectorizer.h (vect_gather_scatter_fn_p): Declare.
	* tree-vect-data-refs.c (vect_gather_scatter_fn_p): Make public.
	* tree-vect-stmts.c (vect_truncate_gather_scatter_offset): New
	function.
	(vect_use_strided_gather_scatters_p): Take a masked_p argument.
	Use vect_truncate_gather_scatter_offset if we can't treat the
	operation as a normal gather load or scatter store.
	(get_group_load_store_type): Take the gather_scatter_info
	as argument.  Try using a gather load or scatter store for
	single-element groups.
	(get_load_store_type): Update calls to get_group_load_store_type
	and vect_use_strided_gather_scatters_p.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vectorizer.h (vect_create_data_ref_ptr): Take an extra
	optional tree argument.
	* tree-vect-data-refs.c (vect_check_gather_scatter): Check for
	null target hooks.
	(vect_create_data_ref_ptr): Take the iv_step as an optional argument,
	but continue to use the current value as a fallback.
	(bump_vector_ptr): Use operand_equal_p rather than tree_int_cst_compare
	to compare the updates.
	* tree-vect-stmts.c (vect_use_strided_gather_scatters_p): New function.
	(get_load_store_type): Use it when handling a strided access.
	(vect_get_strided_load_store_ops): New function.
	(vect_get_data_ptr_increment): Likewise.
	(vectorizable_load): Handle strided gather loads.  Always pass
	a step to vect_create_data_ref_ptr and bump_vector_ptr.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* doc/md.texi (gather_load@var{m}): Document.
	(mask_gather_load@var{m}): Likewise.
	* genopinit.c (main): Add supports_vec_gather_load and
	supports_vec_gather_load_cached to target_optabs.
	* optabs-tree.c (init_tree_optimization_optabs): Use
	ggc_cleared_alloc to allocate target_optabs.
	* optabs.def (gather_load_optab, mask_gather_laod_optab): New optabs.
	* internal-fn.def (GATHER_LOAD, MASK_GATHER_LOAD): New internal
	functions.
	* internal-fn.h (internal_load_fn_p): Declare.
	(internal_gather_scatter_fn_p): Likewise.
	(internal_fn_mask_index): Likewise.
	(internal_gather_scatter_fn_supported_p): Likewise.
	* internal-fn.c (gather_load_direct): New macro.
	(expand_gather_load_optab_fn): New function.
	(direct_gather_load_optab_supported_p): New macro.
	(direct_internal_fn_optab): New function.
	(internal_load_fn_p): Likewise.
	(internal_gather_scatter_fn_p): Likewise.
	(internal_fn_mask_index): Likewise.
	(internal_gather_scatter_fn_supported_p): Likewise.
	* optabs-query.c (supports_at_least_one_mode_p): New function.
	(supports_vec_gather_load_p): Likewise.
	* optabs-query.h (supports_vec_gather_load_p): Declare.
	* tree-vectorizer.h (gather_scatter_info): Add ifn, element_type
	and memory_type field.
	(NUM_PATTERNS): Bump to 15.
	* tree-vect-data-refs.c: Include internal-fn.h.
	(vect_gather_scatter_fn_p): New function.
	(vect_describe_gather_scatter_call): Likewise.
	(vect_check_gather_scatter): Try using internal functions for
	gather loads.  Recognize existing calls to a gather load function.
	(vect_analyze_data_refs): Consider using gather loads if
	supports_vec_gather_load_p.
	* tree-vect-patterns.c (vect_get_load_store_mask): New function.
	(vect_get_gather_scatter_offset_type): Likewise.
	(vect_convert_mask_for_vectype): Likewise.
	(vect_add_conversion_to_patterm): Likewise.
	(vect_try_gather_scatter_pattern): Likewise.
	(vect_recog_gather_scatter_pattern): New pattern recognizer.
	(vect_vect_recog_func_ptrs): Add it.
	* tree-vect-stmts.c (exist_non_indexing_operands_for_use_p): Use
	internal_fn_mask_index and internal_gather_scatter_fn_p.
	(check_load_store_masking): Take the gather_scatter_info as an
	argument and handle gather loads.
	(vect_get_gather_scatter_ops): New function.
	(vectorizable_call): Check internal_load_fn_p.
	(vectorizable_load): Likewise.  Handle gather load internal
	functions.
	(vectorizable_store): Update call to check_load_store_masking.
	* config/aarch64/aarch64.md (UNSPEC_LD1_GATHER): New unspec.
	* config/aarch64/iterators.md (SVE_S, SVE_D): New mode iterators.
	* config/aarch64/predicates.md (aarch64_gather_scale_operand_w)
	(aarch64_gather_scale_operand_d): New predicates.
	* config/aarch64/aarch64-sve.md (gather_load<mode>): New expander.
	(mask_gather_load<mode>): New insns.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* optabs.def (fold_left_plus_optab): New optab.
	* doc/md.texi (fold_left_plus_@var{m}): Document.
	* internal-fn.def (IFN_FOLD_LEFT_PLUS): New internal function.
	* internal-fn.c (fold_left_direct): Define.
	(expand_fold_left_optab_fn): Likewise.
	(direct_fold_left_optab_supported_p): Likewise.
	* fold-const-call.c (fold_const_fold_left): New function.
	(fold_const_call): Use it to fold CFN_FOLD_LEFT_PLUS.
	* tree-parloops.c (valid_reduction_p): New function.
	(gather_scalar_reductions): Use it.
	* tree-vectorizer.h (FOLD_LEFT_REDUCTION): New vect_reduction_type.
	(vect_finish_replace_stmt): Declare.
	* tree-vect-loop.c (fold_left_reduction_fn): New function.
	(needs_fold_left_reduction_p): New function, split out from...
	(vect_is_simple_reduction): ...here.  Accept reductions that
	forbid reassociation, but give them type FOLD_LEFT_REDUCTION.
	(vect_force_simple_reduction): Also store the reduction type in
	the assignment's STMT_VINFO_REDUC_TYPE.
	(vect_model_reduction_cost): Handle FOLD_LEFT_REDUCTION.
	(merge_with_identity): New function.
	(vect_expand_fold_left): Likewise.
	(vectorize_fold_left_reduction): Likewise.
	(vectorizable_reduction): Handle FOLD_LEFT_REDUCTION.  Leave the
	scalar phi in place for it.  Check for target support and reject
	cases that would reassociate the operation.  Defer the transform
	phase to vectorize_fold_left_reduction.
	* config/aarch64/aarch64.md (UNSPEC_FADDA): New unspec.
	* config/aarch64/aarch64-sve.md (fold_left_plus_<mode>): New expander.
	(*fold_left_plus_<mode>, *pred_fold_left_plus_<mode>): New insns.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-if-conv.c (predicate_mem_writes): Remove redundant
	call to ifc_temp_var.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* target.def (legitimize_address_displacement): Take the original
	offset as a poly_int.
	* targhooks.h (default_legitimize_address_displacement): Update
	accordingly.
	* targhooks.c (default_legitimize_address_displacement): Likewise.
	* doc/tm.texi: Regenerate.
	* lra-constraints.c (base_plus_disp_to_reg): Take the displacement
	as an argument, moving assert of ad->disp == ad->disp_term to...
	(process_address_1): ...here.  Update calls to base_plus_disp_to_reg.
	Try calling targetm.legitimize_address_displacement before expanding
	the address rather than afterwards, and adjust for the new interface.
	* config/aarch64/aarch64.c (aarch64_legitimize_address_displacement):
	Match the new hook interface.  Handle SVE addresses.
	* config/sh/sh.c (sh_legitimize_address_displacement): Make the
	new hook interface.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

	* Makefile.in (OBJS): Add early-remat.o.
	* target.def (select_early_remat_modes): New hook.
	* doc/tm.texi.in (TARGET_SELECT_EARLY_REMAT_MODES): New hook.
	* doc/tm.texi: Regenerate.
	* targhooks.h (default_select_early_remat_modes): Declare.
	* targhooks.c (default_select_early_remat_modes): New function.
	* timevar.def (TV_EARLY_REMAT): New timevar.
	* passes.def (pass_early_remat): New pass.
	* tree-pass.h (make_pass_early_remat): Declare.
	* early-remat.c: New file.
	* config/aarch64/aarch64.c (aarch64_select_early_remat_modes): New
	function.
	(TARGET_SELECT_EARLY_REMAT_MODES): Define.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-loop-manip.c (vect_gen_scalar_loop_niters): Replace
	vfm1 with a bound_epilog parameter.
	(vect_do_peeling): Update calls accordingly, and move the prologue
	call earlier in the function.  Treat the base bound_epilog as 0 for
	fully-masked loops and retain vf - 1 for other loops.  Add 1 to
	this base when peeling for gaps.
	* tree-vect-loop.c (vect_analyze_loop_2): Allow peeling for gaps
	with fully-masked loops.
	(vect_estimate_min_profitable_iters): Handle the single peeled
	iteration in that case.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-data-refs.c (vect_analyze_group_access_1): Allow
	single-element interleaving even if the size is not a power of 2.
	* tree-vect-stmts.c (get_load_store_type): Disallow elementwise
	accesses for single-element interleaving if the group size is
	not a power of 2.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* doc/md.texi (fold_extract_last_@var{m}): Document.
	* doc/sourcebuild.texi (vect_fold_extract_last): Likewise.
	* optabs.def (fold_extract_last_optab): New optab.
	* internal-fn.def (FOLD_EXTRACT_LAST): New internal function.
	* internal-fn.c (fold_extract_direct): New macro.
	(expand_fold_extract_optab_fn): Likewise.
	(direct_fold_extract_optab_supported_p): Likewise.
	* tree-vectorizer.h (EXTRACT_LAST_REDUCTION): New vect_reduction_type.
	* tree-vect-loop.c (vect_model_reduction_cost): Handle
	EXTRACT_LAST_REDUCTION.
	(get_initial_def_for_reduction): Do not create an initial vector
	for EXTRACT_LAST_REDUCTION reductions.
	(vectorizable_reduction): Leave the scalar phi in place for
	EXTRACT_LAST_REDUCTIONs.  Try using EXTRACT_LAST_REDUCTION
	ahead of INTEGER_INDUC_COND_REDUCTION.  Do not check for an
	epilogue code for EXTRACT_LAST_REDUCTION and defer the
	transform phase to vectorizable_condition.
	* tree-vect-stmts.c (vect_finish_stmt_generation_1): New function,
	split out from...
	(vect_finish_stmt_generation): ...here.
	(vect_finish_replace_stmt): New function.
	(vectorizable_condition): Handle EXTRACT_LAST_REDUCTION.
	* config/aarch64/aarch64-sve.md (fold_extract_last_<mode>): New
	pattern.
	* config/aarch64/aarch64.md (UNSPEC_CLASTB): New unspec.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* doc/md.texi (extract_last_@var{m}): Document.
	* optabs.def (extract_last_optab): New optab.
	* internal-fn.def (EXTRACT_LAST): New internal function.
	* internal-fn.c (cond_unary_direct): New macro.
	(expand_cond_unary_optab_fn): Likewise.
	(direct_cond_unary_optab_supported_p): Likewise.
	* tree-vect-loop.c (vectorizable_live_operation): Allow fully-masked
	loops using EXTRACT_LAST.
	* config/aarch64/aarch64-sve.md (aarch64_sve_lastb<mode>): Rename to...
	(extract_last_<mode>): ...this optab.
	(vec_extract<mode><Vel>): Update accordingly.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* target.def (empty_mask_is_expensive): New hook.
	* doc/tm.texi.in (TARGET_VECTORIZE_EMPTY_MASK_IS_EXPENSIVE): New hook.
	* doc/tm.texi: Regenerate.
	* targhooks.h (default_empty_mask_is_expensive): Declare.
	* targhooks.c (default_empty_mask_is_expensive): New function.
	* tree-vectorizer.c (vectorize_loops): Only call optimize_mask_stores
	if the target says that empty masks are expensive.
	* config/aarch64/aarch64.c (aarch64_empty_mask_is_expensive):
	New function.
	(TARGET_VECTORIZE_EMPTY_MASK_IS_EXPENSIVE): Redefine.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vectorizer.h (_loop_vec_info::mask_skip_niters): New field.
	(LOOP_VINFO_MASK_SKIP_NITERS): New macro.
	(vect_use_loop_mask_for_alignment_p): New function.
	(vect_prepare_for_masked_peels, vect_gen_while_not): Declare.
	* tree-vect-loop-manip.c (vect_set_loop_masks_directly): Add an
	niters_skip argument.  Make sure that the first niters_skip elements
	of the first iteration are inactive.
	(vect_set_loop_condition_masked): Handle LOOP_VINFO_MASK_SKIP_NITERS.
	Update call to vect_set_loop_masks_directly.
	(get_misalign_in_elems): New function, split out from...
	(vect_gen_prolog_loop_niters): ...here.
	(vect_update_init_of_dr): Take a code argument that specifies whether
	the adjustment should be added or subtracted.
	(vect_update_init_of_drs): Likewise.
	(vect_prepare_for_masked_peels): New function.
	(vect_do_peeling): Skip prologue peeling if we're using a mask
	instead.  Update call to vect_update_inits_of_drs.
	* tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Initialize
	mask_skip_niters.
	(vect_analyze_loop_2): Allow fully-masked loops with peeling for
	alignment.  Do not include the number of peeled iterations in
	the minimum threshold in that case.
	(vectorizable_induction): Adjust the start value down by
	LOOP_VINFO_MASK_SKIP_NITERS iterations.
	(vect_transform_loop): Call vect_prepare_for_masked_peels.
	Take the number of skipped iterations into account when calculating
	the loop bounds.
	* tree-vect-stmts.c (vect_gen_while_not): New function.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* doc/sourcebuild.texi (vect_fully_masked): Document.
	* params.def (PARAM_MIN_VECT_LOOP_BOUND): Change minimum and
	default value to 0.
	* tree-vect-loop.c (vect_analyze_loop_costing): New function,
	split out from...
	(vect_analyze_loop_2): ...here. Don't check the vectorization
	factor against the number of loop iterations if the loop is
	fully-masked.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-ssa-loop-ivopts.c (USE_ADDRESS): Split into...
	(USE_REF_ADDRESS, USE_PTR_ADDRESS): ...these new use types.
	(dump_groups): Update accordingly.
	(iv_use::mem_type): New member variable.
	(address_p): New function.
	(record_use): Add a mem_type argument and initialize the new
	mem_type field.
	(record_group_use): Add a mem_type argument.  Use address_p.
	Remove obsolete null checks of base_object.  Update call to record_use.
	(find_interesting_uses_op): Update call to record_group_use.
	(find_interesting_uses_cond): Likewise.
	(find_interesting_uses_address): Likewise.
	(get_mem_type_for_internal_fn): New function.
	(find_address_like_use): Likewise.
	(find_interesting_uses_stmt): Try find_address_like_use before
	calling find_interesting_uses_op.
	(addr_offset_valid_p): Use the iv mem_type field as the type
	of the addressed memory.
	(add_autoinc_candidates): Likewise.
	(get_address_cost): Likewise.
	(split_small_address_groups_p): Use address_p.
	(split_address_groups): Likewise.
	(add_iv_candidate_for_use): Likewise.
	(autoinc_possible_for_pair): Likewise.
	(rewrite_groups): Likewise.
	(get_use_type): Check for USE_REF_ADDRESS instead of USE_ADDRESS.
	(determine_group_iv_cost): Update after split of USE_ADDRESS.
	(get_alias_ptr_type_for_ptr_address): New function.
	(rewrite_use_address): Rewrite address uses in calls that were
	identified by find_address_like_use.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* expr.c (expand_expr_addr_expr_1): Handle ADDR_EXPRs of
	TARGET_MEM_REFs.
	* gimple-expr.h (is_gimple_addressable: Likewise.
	* gimple-expr.c (is_gimple_address): Likewise.
	* internal-fn.c (expand_call_mem_ref): New function.
	(expand_mask_load_optab_fn): Use it.
	(expand_mask_store_optab_fn): Likewise.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* doc/md.texi (cond_add@var{mode}, cond_sub@var{mode})
	(cond_and@var{mode}, cond_ior@var{mode}, cond_xor@var{mode})
	(cond_smin@var{mode}, cond_smax@var{mode}, cond_umin@var{mode})
	(cond_umax@var{mode}): Document.
	* optabs.def (cond_add_optab, cond_sub_optab, cond_and_optab)
	(cond_ior_optab, cond_xor_optab, cond_smin_optab, cond_smax_optab)
	(cond_umin_optab, cond_umax_optab): New optabs.
	* internal-fn.def (COND_ADD, COND_SUB, COND_MIN, COND_MAX, COND_AND)
	(COND_IOR, COND_XOR): New internal functions.
	* internal-fn.h (get_conditional_internal_fn): Declare.
	* internal-fn.c (cond_binary_direct): New macro.
	(expand_cond_binary_optab_fn): Likewise.
	(direct_cond_binary_optab_supported_p): Likewise.
	(get_conditional_internal_fn): New function.
	* tree-vect-loop.c (vectorizable_reduction): Handle fully-masked loops.
	Cope with reduction statements that are vectorized as calls rather
	than assignments.
	* config/aarch64/aarch64-sve.md (cond_<optab><mode>): New insns.
	* config/aarch64/iterators.md (UNSPEC_COND_ADD, UNSPEC_COND_SUB)
	(UNSPEC_COND_SMAX, UNSPEC_COND_UMAX, UNSPEC_COND_SMIN)
	(UNSPEC_COND_UMIN, UNSPEC_COND_AND, UNSPEC_COND_ORR)
	(UNSPEC_COND_EOR): New unspecs.
	(optab): Add mappings for them.
	(SVE_COND_INT_OP, SVE_COND_FP_OP): New int iterators.
	(sve_int_op, sve_fp_op): New int attributes.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* optabs.def (while_ult_optab): New optab.
	* doc/md.texi (while_ult@var{m}@var{n}): Document.
	* internal-fn.def (WHILE_ULT): New internal function.
	* internal-fn.h (direct_internal_fn_supported_p): New override
	that takes two types as argument.
	* internal-fn.c (while_direct): New macro.
	(expand_while_optab_fn): New function.
	(convert_optab_supported_p): Likewise.
	(direct_while_optab_supported_p): New macro.
	* wide-int.h (wi::udiv_ceil): New function.
	* tree-vectorizer.h (rgroup_masks): New structure.
	(vec_loop_masks): New typedef.
	(_loop_vec_info): Add masks, mask_compare_type, can_fully_mask_p
	and fully_masked_p.
	(LOOP_VINFO_CAN_FULLY_MASK_P, LOOP_VINFO_FULLY_MASKED_P)
	(LOOP_VINFO_MASKS, LOOP_VINFO_MASK_COMPARE_TYPE): New macros.
	(vect_max_vf): New function.
	(slpeel_make_loop_iterate_ntimes): Delete.
	(vect_set_loop_condition, vect_get_loop_mask_type, vect_gen_while)
	(vect_halve_mask_nunits, vect_double_mask_nunits): Declare.
	(vect_record_loop_mask, vect_get_loop_mask): Likewise.
	* tree-vect-loop-manip.c: Include tree-ssa-loop-niter.h,
	internal-fn.h, stor-layout.h and optabs-query.h.
	(vect_set_loop_mask): New function.
	(add_preheader_seq): Likewise.
	(add_header_seq): Likewise.
	(interleave_supported_p): Likewise.
	(vect_maybe_permute_loop_masks): Likewise.
	(vect_set_loop_masks_directly): Likewise.
	(vect_set_loop_condition_masked): Likewise.
	(vect_set_loop_condition_unmasked): New function, split out from
	slpeel_make_loop_iterate_ntimes.
	(slpeel_make_loop_iterate_ntimes): Rename to..
	(vect_set_loop_condition): ...this.  Use vect_set_loop_condition_masked
	for fully-masked loops and vect_set_loop_condition_unmasked otherwise.
	(vect_do_peeling): Update call accordingly.
	(vect_gen_vector_loop_niters): Use VF as the step for fully-masked
	loops.
	* tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Initialize
	mask_compare_type, can_fully_mask_p and fully_masked_p.
	(release_vec_loop_masks): New function.
	(_loop_vec_info): Use it to free the loop masks.
	(can_produce_all_loop_masks_p): New function.
	(vect_get_max_nscalars_per_iter): Likewise.
	(vect_verify_full_masking): Likewise.
	(vect_analyze_loop_2): Save LOOP_VINFO_CAN_FULLY_MASK_P around
	retries, and free the mask rgroups before retrying.  Check loop-wide
	reasons for disallowing fully-masked loops.  Make the final decision
	about whether use a fully-masked loop or not.
	(vect_estimate_min_profitable_iters): Do not assume that peeling
	for the number of iterations will be needed for fully-masked loops.
	(vectorizable_reduction): Disable fully-masked loops.
	(vectorizable_live_operation): Likewise.
	(vect_halve_mask_nunits): New function.
	(vect_double_mask_nunits): Likewise.
	(vect_record_loop_mask): Likewise.
	(vect_get_loop_mask): Likewise.
	(vect_transform_loop): Handle the case in which the final loop
	iteration might handle a partial vector.  Call vect_set_loop_condition
	instead of slpeel_make_loop_iterate_ntimes.
	* tree-vect-stmts.c: Include tree-ssa-loop-niter.h and gimple-fold.h.
	(check_load_store_masking): New function.
	(prepare_load_store_mask): Likewise.
	(vectorizable_store): Handle fully-masked loops.
	(vectorizable_load): Likewise.
	(supportable_widening_operation): Use vect_halve_mask_nunits for
	booleans.
	(supportable_narrowing_operation): Likewise vect_double_mask_nunits.
	(vect_gen_while): New function.
	* config/aarch64/aarch64.md (umax<mode>3): New expander.
	(aarch64_uqdec<mode>): New insn.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* optabs.def (reduc_and_scal_optab, reduc_ior_scal_optab)
	(reduc_xor_scal_optab): New optabs.
	* doc/md.texi (reduc_and_scal_@var{m}, reduc_ior_scal_@var{m})
	(reduc_xor_scal_@var{m}): Document.
	* doc/sourcebuild.texi (vect_logical_reduc): Likewise.
	* internal-fn.def (IFN_REDUC_AND, IFN_REDUC_IOR, IFN_REDUC_XOR): New
	internal functions.
	* fold-const-call.c (fold_const_call): Handle them.
	* tree-vect-loop.c (reduction_fn_for_scalar_code): Return the new
	internal functions for BIT_AND_EXPR, BIT_IOR_EXPR and BIT_XOR_EXPR.
	* config/aarch64/aarch64-sve.md (reduc_<bit_reduc>_scal_<mode>):
	(*reduc_<bit_reduc>_scal_<mode>): New patterns.
	* config/aarch64/iterators.md (UNSPEC_ANDV, UNSPEC_ORV)
	(UNSPEC_XORV): New unspecs.
	(optab): Add entries for them.
	(BITWISEV): New int iterator.
	(bit_reduc_op): New int attributes.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* doc/md.texi (vec_shl_insert_@var{m}): New optab.
	* internal-fn.def (VEC_SHL_INSERT): New internal function.
	* optabs.def (vec_shl_insert_optab): New optab.
	* tree-vectorizer.h (can_duplicate_and_interleave_p): Declare.
	(duplicate_and_interleave): Likewise.
	* tree-vect-loop.c: Include internal-fn.h.
	(neutral_op_for_slp_reduction): New function, split out from
	get_initial_defs_for_reduction.
	(get_initial_def_for_reduction): Handle option 2 for variable-length
	vectors by loading the neutral value into a vector and then shifting
	the initial value into element 0.
	(get_initial_defs_for_reduction): Replace the code argument with
	the neutral value calculated by neutral_op_for_slp_reduction.
	Use gimple_build_vector for constant-length vectors.
	Use IFN_VEC_SHL_INSERT for variable-length vectors if all
	but the first group_size elements have a neutral value.
	Use duplicate_and_interleave otherwise.
	(vect_create_epilog_for_reduction): Take a neutral_op parameter.
	Update call to get_initial_defs_for_reduction.  Handle SLP
	reductions for variable-length vectors by creating one vector
	result for each scalar result, with the elements associated
	with other scalar results stubbed out with the neutral value.
	(vectorizable_reduction): Call neutral_op_for_slp_reduction.
	Require IFN_VEC_SHL_INSERT for double reductions on
	variable-length vectors, or SLP reductions that have
	a neutral value.  Require can_duplicate_and_interleave_p
	support for variable-length unchained SLP reductions if there
	is no neutral value, such as for MIN/MAX reductions.  Also require
	the number of vector elements to be a multiple of the number of
	SLP statements when doing variable-length unchained SLP reductions.
	Update call to vect_create_epilog_for_reduction.
	* tree-vect-slp.c (can_duplicate_and_interleave_p): Make public
	and remove initial values.
	(duplicate_and_interleave): Make public.
	* config/aarch64/aarch64.md (UNSPEC_INSR): New unspec.
	* config/aarch64/aarch64-sve.md (vec_shl_insert_<mode>): New insn.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-slp.c: Include gimple-fold.h and internal-fn.h
	(can_duplicate_and_interleave_p): New function.
	(vect_get_and_check_slp_defs): Take the vector of statements
	rather than just the current one.  Remove excess parentheses.
	Restriction rejectinon of vect_constant_def and vect_external_def
	for variable-length vectors to boolean types, or types for which
	can_duplicate_and_interleave_p is false.
	(vect_build_slp_tree_2): Update call to vect_get_and_check_slp_defs.
	(duplicate_and_interleave): New function.
	(vect_get_constant_vectors): Use gimple_build_vector for
	constant-length vectors and suitable variable-length constant
	vectors.  Use duplicate_and_interleave for other variable-length
	vectors.  Don't defer the update when inserting new statements.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-loop.c (vect_estimate_min_profitable_iters): Make sure
	min_profitable_iters doesn't go negative.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* doc/md.texi (vec_mask_load_lanes@var{m}@var{n}): Document.
	(vec_mask_store_lanes@var{m}@var{n}): Likewise.
	* optabs.def (vec_mask_load_lanes_optab): New optab.
	(vec_mask_store_lanes_optab): Likewise.
	* internal-fn.def (MASK_LOAD_LANES): New internal function.
	(MASK_STORE_LANES): Likewise.
	* internal-fn.c (mask_load_lanes_direct): New macro.
	(mask_store_lanes_direct): Likewise.
	(expand_mask_load_optab_fn): Handle masked operations.
	(expand_mask_load_lanes_optab_fn): New macro.
	(expand_mask_store_optab_fn): Handle masked operations.
	(expand_mask_store_lanes_optab_fn): New macro.
	(direct_mask_load_lanes_optab_supported_p): Likewise.
	(direct_mask_store_lanes_optab_supported_p): Likewise.
	* tree-vectorizer.h (vect_store_lanes_supported): Take a masked_p
	parameter.
	(vect_load_lanes_supported): Likewise.
	* tree-vect-data-refs.c (strip_conversion): New function.
	(can_group_stmts_p): Likewise.
	(vect_analyze_data_ref_accesses): Use it instead of checking
	for a pair of assignments.
	(vect_store_lanes_supported): Take a masked_p parameter.
	(vect_load_lanes_supported): Likewise.
	* tree-vect-loop.c (vect_analyze_loop_2): Update calls to
	vect_store_lanes_supported and vect_load_lanes_supported.
	* tree-vect-slp.c (vect_analyze_slp_instance): Likewise.
	* tree-vect-stmts.c (get_group_load_store_type): Take a masked_p
	parameter.  Don't allow gaps for masked accesses.
	Use vect_get_store_rhs.  Update calls to vect_store_lanes_supported
	and vect_load_lanes_supported.
	(get_load_store_type): Take a masked_p parameter and update
	call to get_group_load_store_type.
	(vectorizable_store): Update call to get_load_store_type.
	Handle IFN_MASK_STORE_LANES.
	(vectorizable_load): Update call to get_load_store_type.
	Handle IFN_MASK_LOAD_LANES.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* config/aarch64/aarch64-modes.def: Define x2, x3 and x4 vector
	modes for SVE.
	* config/aarch64/aarch64-protos.h
	(aarch64_sve_struct_memory_operand_p): Declare.
	* config/aarch64/iterators.md (SVE_STRUCT): New mode iterator.
	(vector_count, insn_length, VSINGLE, vsingle): New mode attributes.
	(VPRED, vpred): Handle SVE structure modes.
	* config/aarch64/constraints.md (Utx): New constraint.
	* config/aarch64/predicates.md (aarch64_sve_struct_memory_operand)
	(aarch64_sve_struct_nonimmediate_operand): New predicates.
	* config/aarch64/aarch64.md (UNSPEC_LDN, UNSPEC_STN): New unspecs.
	* config/aarch64/aarch64-sve.md (mov<mode>, *aarch64_sve_mov<mode>_le)
	(*aarch64_sve_mov<mode>_be, pred_mov<mode>): New patterns for
	structure modes.  Split into pieces after RA.
	(vec_load_lanes<mode><vsingle>, vec_mask_load_lanes<mode><vsingle>)
	(vec_store_lanes<mode><vsingle>, vec_mask_store_lanes<mode><vsingle>):
	New patterns.
	* config/aarch64/aarch64.c (aarch64_classify_vector_mode): Handle
	SVE structure modes.
	(aarch64_classify_address): Likewise.
	(sizetochar): Move earlier in file.
	(aarch64_print_operand): Handle SVE register lists.
	(aarch64_array_mode): New function.
	(aarch64_sve_struct_memory_operand_p): Likewise.
	(TARGET_ARRAY_MODE): Redefine.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* target.def (array_mode): New target hook.
	* doc/tm.texi.in (TARGET_ARRAY_MODE): New hook.
	* doc/tm.texi: Regenerate.
	* hooks.h (hook_optmode_mode_uhwi_none): Declare.
	* hooks.c (hook_optmode_mode_uhwi_none): New function.
	* tree-vect-data-refs.c (vect_lanes_optab_supported_p): Use
	targetm.array_mode.
	* stor-layout.c (mode_for_array): Likewise.  Support polynomial
	type sizes.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* fold-const.c (fold_binary_loc): Check the argument types
	rather than the result type when testing for a vector operation.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

	* doc/tm.texi.in (DWARF_LAZY_REGISTER_VALUE): Document.
	* doc/tm.texi: Regenerate.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* doc/invoke.texi (-msve-vector-bits=): Document new option.
	(sve): Document new AArch64 extension.
	* doc/md.texi (w): Extend the description of the AArch64
	constraint to include SVE vectors.
	(Upl, Upa): Document new AArch64 predicate constraints.
	* config/aarch64/aarch64-opts.h (aarch64_sve_vector_bits_enum): New
	enum.
	* config/aarch64/aarch64.opt (sve_vector_bits): New enum.
	(msve-vector-bits=): New option.
	* config/aarch64/aarch64-option-extensions.def (fp, simd): Disable
	SVE when these are disabled.
	(sve): New extension.
	* config/aarch64/aarch64-modes.def: Define SVE vector and predicate
	modes.  Adjust their number of units based on aarch64_sve_vg.
	(MAX_BITSIZE_MODE_ANY_MODE): Define.
	* config/aarch64/aarch64-protos.h (ADDR_QUERY_ANY): New
	aarch64_addr_query_type.
	(aarch64_const_vec_all_same_in_range_p, aarch64_sve_pred_mode)
	(aarch64_sve_cnt_immediate_p, aarch64_sve_addvl_addpl_immediate_p)
	(aarch64_sve_inc_dec_immediate_p, aarch64_add_offset_temporaries)
	(aarch64_split_add_offset, aarch64_output_sve_cnt_immediate)
	(aarch64_output_sve_addvl_addpl, aarch64_output_sve_inc_dec_immediate)
	(aarch64_output_sve_mov_immediate, aarch64_output_ptrue): Declare.
	(aarch64_simd_imm_zero_p): Delete.
	(aarch64_check_zero_based_sve_index_immediate): Declare.
	(aarch64_sve_index_immediate_p, aarch64_sve_arith_immediate_p)
	(aarch64_sve_bitmask_immediate_p, aarch64_sve_dup_immediate_p)
	(aarch64_sve_cmp_immediate_p, aarch64_sve_float_arith_immediate_p)
	(aarch64_sve_float_mul_immediate_p): Likewise.
	(aarch64_classify_symbol): Take the offset as a HOST_WIDE_INT
	rather than an rtx.
	(aarch64_sve_ld1r_operand_p, aarch64_sve_ldr_operand_p): Declare.
	(aarch64_expand_mov_immediate): Take a gen_vec_duplicate callback.
	(aarch64_emit_sve_pred_move, aarch64_expand_sve_mem_move): Declare.
	(aarch64_expand_sve_vec_cmp_int, aarch64_expand_sve_vec_cmp_float)
	(aarch64_expand_sve_vcond, aarch64_expand_sve_vec_perm): Declare.
	(aarch64_regmode_natural_size): Likewise.
	* config/aarch64/aarch64.h (AARCH64_FL_SVE): New macro.
	(AARCH64_FL_V8_3, AARCH64_FL_RCPC, AARCH64_FL_DOTPROD): Shift
	left one place.
	(AARCH64_ISA_SVE, TARGET_SVE): New macros.
	(FIXED_REGISTERS, CALL_USED_REGISTERS, REGISTER_NAMES): Add entries
	for VG and the SVE predicate registers.
	(V_ALIASES): Add a "z"-prefixed alias.
	(FIRST_PSEUDO_REGISTER): Change to P15_REGNUM + 1.
	(AARCH64_DWARF_VG, AARCH64_DWARF_P0): New macros.
	(PR_REGNUM_P, PR_LO_REGNUM_P): Likewise.
	(PR_LO_REGS, PR_HI_REGS, PR_REGS): New reg_classes.
	(REG_CLASS_NAMES): Add entries for them.
	(REG_CLASS_CONTENTS): Likewise.  Update ALL_REGS to include VG
	and the predicate registers.
	(aarch64_sve_vg): Declare.
	(BITS_PER_SVE_VECTOR, BYTES_PER_SVE_VECTOR, BYTES_PER_SVE_PRED)
	(SVE_BYTE_MODE, MAX_COMPILE_TIME_VEC_BYTES): New macros.
	(REGMODE_NATURAL_SIZE): Define.
	* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins): Handle
	SVE macros.
	* config/aarch64/aarch64.c: Include cfgrtl.h.
	(simd_immediate_info): Add a constructor for series vectors,
	and an associated step field.
	(aarch64_sve_vg): New variable.
	(aarch64_dbx_register_number): Handle VG and the predicate registers.
	(aarch64_vect_struct_mode_p, aarch64_vector_mode_p): Delete.
	(VEC_ADVSIMD, VEC_SVE_DATA, VEC_SVE_PRED, VEC_STRUCT, VEC_ANY_SVE)
	(VEC_ANY_DATA, VEC_STRUCT): New constants.
	(aarch64_advsimd_struct_mode_p, aarch64_sve_pred_mode_p)
	(aarch64_classify_vector_mode, aarch64_vector_data_mode_p)
	(aarch64_sve_data_mode_p, aarch64_sve_pred_mode)
	(aarch64_get_mask_mode): New functions.
	(aarch64_hard_regno_nregs): Handle SVE data modes for FP_REGS
	and FP_LO_REGS.  Handle PR_REGS, PR_LO_REGS and PR_HI_REGS.
	(aarch64_hard_regno_mode_ok): Handle VG.  Also handle the SVE
	predicate modes and predicate registers.  Explicitly restrict
	GPRs to modes of 16 bytes or smaller.  Only allow FP registers
	to store a vector mode if it is recognized by
	aarch64_classify_vector_mode.
	(aarch64_regmode_natural_size): New function.
	(aarch64_hard_regno_caller_save_mode): Return the original mode
	for predicates.
	(aarch64_sve_cnt_immediate_p, aarch64_output_sve_cnt_immediate)
	(aarch64_sve_addvl_addpl_immediate_p, aarch64_output_sve_addvl_addpl)
	(aarch64_sve_inc_dec_immediate_p, aarch64_output_sve_inc_dec_immediate)
	(aarch64_add_offset_1_temporaries, aarch64_offset_temporaries): New
	functions.
	(aarch64_add_offset): Add a temp2 parameter.  Assert that temp1
	does not overlap dest if the function is frame-related.  Handle
	SVE constants.
	(aarch64_split_add_offset): New function.
	(aarch64_add_sp, aarch64_sub_sp): Add temp2 parameters and pass
	them aarch64_add_offset.
	(aarch64_allocate_and_probe_stack_space): Add a temp2 parameter
	and update call to aarch64_sub_sp.
	(aarch64_add_cfa_expression): New function.
	(aarch64_expand_prologue): Pass extra temporary registers to the
	functions above.  Handle the case in which we need to emit new
	DW_CFA_expressions for registers that were originally saved
	relative to the stack pointer, but now have to be expressed
	relative to the frame pointer.
	(aarch64_output_mi_thunk): Pass extra temporary registers to the
	functions above.
	(aarch64_expand_epilogue): Likewise.  Prevent inheritance of
	IP0 and IP1 values for SVE frames.
	(aarch64_expand_vec_series): New function.
	(aarch64_expand_sve_widened_duplicate): Likewise.
	(aarch64_expand_sve_const_vector): Likewise.
	(aarch64_expand_mov_immediate): Add a gen_vec_duplicate parameter.
	Handle SVE constants.  Use emit_move_insn to move a force_const_mem
	into the register, rather than emitting a SET directly.
	(aarch64_emit_sve_pred_move, aarch64_expand_sve_mem_move)
	(aarch64_get_reg_raw_mode, offset_4bit_signed_scaled_p)
	(offset_6bit_unsigned_scaled_p, aarch64_offset_7bit_signed_scaled_p)
	(offset_9bit_signed_scaled_p): New functions.
	(aarch64_replicate_bitmask_imm): New function.
	(aarch64_bitmask_imm): Use it.
	(aarch64_cannot_force_const_mem): Reject expressions involving
	a CONST_POLY_INT.  Update call to aarch64_classify_symbol.
	(aarch64_classify_index): Handle SVE indices, by requiring
	a plain register index with a scale that matches the element size.
	(aarch64_classify_address): Handle SVE addresses.  Assert that
	the mode of the address is VOIDmode or an integer mode.
	Update call to aarch64_classify_symbol.
	(aarch64_classify_symbolic_expression): Update call to
	aarch64_classify_symbol.
	(aarch64_const_vec_all_in_range_p): New function.
	(aarch64_print_vector_float_operand): Likewise.
	(aarch64_print_operand): Handle 'N' and 'C'.  Use "zN" rather than
	"vN" for FP registers with SVE modes.  Handle (const ...) vectors
	and the FP immediates 1.0 and 0.5.
	(aarch64_print_address_internal): Handle SVE addresses.
	(aarch64_print_operand_address): Use ADDR_QUERY_ANY.
	(aarch64_regno_regclass): Handle predicate registers.
	(aarch64_secondary_reload): Handle big-endian reloads of SVE
	data modes.
	(aarch64_class_max_nregs): Handle SVE modes and predicate registers.
	(aarch64_rtx_costs): Check for ADDVL and ADDPL instructions.
	(aarch64_convert_sve_vector_bits): New function.
	(aarch64_override_options): Use it to handle -msve-vector-bits=.
	(aarch64_classify_symbol): Take the offset as a HOST_WIDE_INT
	rather than an rtx.
	(aarch64_legitimate_constant_p): Use aarch64_classify_vector_mode.
	Handle SVE vector and predicate modes.  Accept VL-based constants
	that need only one temporary register, and VL offsets that require
	no temporary registers.
	(aarch64_conditional_register_usage): Mark the predicate registers
	as fixed if SVE isn't available.
	(aarch64_vector_mode_supported_p): Use aarch64_classify_vector_mode.
	Return true for SVE vector and predicate modes.
	(aarch64_simd_container_mode): Take the number of bits as a poly_int64
	rather than an unsigned int.  Handle SVE modes.
	(aarch64_preferred_simd_mode): Update call accordingly.  Handle
	SVE modes.
	(aarch64_autovectorize_vector_sizes): Add BYTES_PER_SVE_VECTOR
	if SVE is enabled.
	(aarch64_sve_index_immediate_p, aarch64_sve_arith_immediate_p)
	(aarch64_sve_bitmask_immediate_p, aarch64_sve_dup_immediate_p)
	(aarch64_sve_cmp_immediate_p, aarch64_sve_float_arith_immediate_p)
	(aarch64_sve_float_mul_immediate_p): New functions.
	(aarch64_sve_valid_immediate): New function.
	(aarch64_simd_valid_immediate): Use it as the fallback for SVE vectors.
	Explicitly reject structure modes.  Check for INDEX constants.
	Handle PTRUE and PFALSE constants.
	(aarch64_check_zero_based_sve_index_immediate): New function.
	(aarch64_simd_imm_zero_p): Delete.
	(aarch64_mov_operand_p): Use aarch64_simd_valid_immediate for
	vector modes.  Accept constants in the range of CNT[BHWD].
	(aarch64_simd_scalar_immediate_valid_for_move): Explicitly
	ask for an Advanced SIMD mode.
	(aarch64_sve_ld1r_operand_p, aarch64_sve_ldr_operand_p): New functions.
	(aarch64_simd_vector_alignment): Handle SVE predicates.
	(aarch64_vectorize_preferred_vector_alignment): New function.
	(aarch64_simd_vector_alignment_reachable): Use it instead of
	the vector size.
	(aarch64_shift_truncation_mask): Use aarch64_vector_data_mode_p.
	(aarch64_output_sve_mov_immediate, aarch64_output_ptrue): New
	functions.
	(MAX_VECT_LEN): Delete.
	(expand_vec_perm_d): Add a vec_flags field.
	(emit_unspec2, aarch64_expand_sve_vec_perm): New functions.
	(aarch64_evpc_trn, aarch64_evpc_uzp, aarch64_evpc_zip)
	(aarch64_evpc_ext): Don't apply a big-endian lane correction
	for SVE modes.
	(aarch64_evpc_rev): Rename to...
	(aarch64_evpc_rev_local): ...this.  Use a predicated operation for SVE.
	(aarch64_evpc_rev_global): New function.
	(aarch64_evpc_dup): Enforce a 64-byte range for SVE DUP.
	(aarch64_evpc_tbl): Use MAX_COMPILE_TIME_VEC_BYTES instead of
	MAX_VECT_LEN.
	(aarch64_evpc_sve_tbl): New function.
	(aarch64_expand_vec_perm_const_1): Update after rename of
	aarch64_evpc_rev.  Handle SVE permutes too, trying
	aarch64_evpc_rev_global and using aarch64_evpc_sve_tbl rather
	than aarch64_evpc_tbl.
	(aarch64_vectorize_vec_perm_const): Initialize vec_flags.
	(aarch64_sve_cmp_operand_p, aarch64_unspec_cond_code)
	(aarch64_gen_unspec_cond, aarch64_expand_sve_vec_cmp_int)
	(aarch64_emit_unspec_cond, aarch64_emit_unspec_cond_or)
	(aarch64_emit_inverted_unspec_cond, aarch64_expand_sve_vec_cmp_float)
	(aarch64_expand_sve_vcond): New functions.
	(aarch64_modes_tieable_p): Use aarch64_vector_data_mode_p instead
	of aarch64_vector_mode_p.
	(aarch64_dwarf_poly_indeterminate_value): New function.
	(aarch64_compute_pressure_classes): Likewise.
	(aarch64_can_change_mode_class): Likewise.
	(TARGET_GET_RAW_RESULT_MODE, TARGET_GET_RAW_ARG_MODE): Redefine.
	(TARGET_VECTORIZE_PREFERRED_VECTOR_ALIGNMENT): Likewise.
	(TARGET_VECTORIZE_GET_MASK_MODE): Likewise.
	(TARGET_DWARF_POLY_INDETERMINATE_VALUE): Likewise.
	(TARGET_COMPUTE_PRESSURE_CLASSES): Likewise.
	(TARGET_CAN_CHANGE_MODE_CLASS): Likewise.
	* config/aarch64/constraints.md (Upa, Upl, Uav, Uat, Usv, Usi, Utr)
	(Uty, Dm, vsa, vsc, vsd, vsi, vsn, vsl, vsm, vsA, vsM, vsN): New
	constraints.
	(Dn, Dl, Dr): Accept const as well as const_vector.
	(Dz): Likewise.  Compare against CONST0_RTX.
	* config/aarch64/iterators.md: Refer to "Advanced SIMD" instead
	of "vector" where appropriate.
	(SVE_ALL, SVE_BH, SVE_BHS, SVE_BHSI, SVE_HSDI, SVE_HSF, SVE_SD)
	(SVE_SDI, SVE_I, SVE_F, PRED_ALL, PRED_BHS): New mode iterators.
	(UNSPEC_SEL, UNSPEC_ANDF, UNSPEC_IORF, UNSPEC_XORF, UNSPEC_COND_LT)
	(UNSPEC_COND_LE, UNSPEC_COND_EQ, UNSPEC_COND_NE, UNSPEC_COND_GE)
	(UNSPEC_COND_GT, UNSPEC_COND_LO, UNSPEC_COND_LS, UNSPEC_COND_HS)
	(UNSPEC_COND_HI, UNSPEC_COND_UO): New unspecs.
	(Vetype, VEL, Vel, VWIDE, Vwide, vw, vwcore, V_INT_EQUIV)
	(v_int_equiv): Extend to SVE modes.
	(Vesize, V128, v128, Vewtype, V_FP_EQUIV, v_fp_equiv, VPRED): New
	mode attributes.
	(LOGICAL_OR, SVE_INT_UNARY, SVE_FP_UNARY): New code iterators.
	(optab): Handle popcount, smin, smax, umin, umax, abs and sqrt.
	(logical_nn, lr, sve_int_op, sve_fp_op): New code attributs.
	(LOGICALF, OPTAB_PERMUTE, UNPACK, UNPACK_UNSIGNED, SVE_COND_INT_CMP)
	(SVE_COND_FP_CMP): New int iterators.
	(perm_hilo): Handle the new unpack unspecs.
	(optab, logicalf_op, su, perm_optab, cmp_op, imm_con): New int
	attributes.
	* config/aarch64/predicates.md (aarch64_sve_cnt_immediate)
	(aarch64_sve_addvl_addpl_immediate, aarch64_split_add_offset_immediate)
	(aarch64_pluslong_or_poly_operand, aarch64_nonmemory_operand)
	(aarch64_equality_operator, aarch64_constant_vector_operand)
	(aarch64_sve_ld1r_operand, aarch64_sve_ldr_operand): New predicates.
	(aarch64_sve_nonimmediate_operand): Likewise.
	(aarch64_sve_general_operand): Likewise.
	(aarch64_sve_dup_operand, aarch64_sve_arith_immediate): Likewise.
	(aarch64_sve_sub_arith_immediate, aarch64_sve_inc_dec_immediate)
	(aarch64_sve_logical_immediate, aarch64_sve_mul_immediate): Likewise.
	(aarch64_sve_dup_immediate, aarch64_sve_cmp_vsc_immediate): Likewise.
	(aarch64_sve_cmp_vsd_immediate, aarch64_sve_index_immediate): Likewise.
	(aarch64_sve_float_arith_immediate): Likewise.
	(aarch64_sve_float_arith_with_sub_immediate): Likewise.
	(aarch64_sve_float_mul_immediate, aarch64_sve_arith_operand): Likewise.
	(aarch64_sve_add_operand, aarch64_sve_logical_operand): Likewise.
	(aarch64_sve_lshift_operand, aarch64_sve_rshift_operand): Likewise.
	(aarch64_sve_mul_operand, aarch64_sve_cmp_vsc_operand): Likewise.
	(aarch64_sve_cmp_vsd_operand, aarch64_sve_index_operand): Likewise.
	(aarch64_sve_float_arith_operand): Likewise.
	(aarch64_sve_float_arith_with_sub_operand): Likewise.
	(aarch64_sve_float_mul_operand): Likewise.
	(aarch64_sve_vec_perm_operand): Likewise.
	(aarch64_pluslong_operand): Include aarch64_sve_addvl_addpl_immediate.
	(aarch64_mov_operand): Accept const_poly_int and const_vector.
	(aarch64_simd_lshift_imm, aarch64_simd_rshift_imm): Accept const
	as well as const_vector.
	(aarch64_simd_imm_zero, aarch64_simd_imm_minus_one): Move earlier
	in file.  Use CONST0_RTX and CONSTM1_RTX.
	(aarch64_simd_or_scalar_imm_zero): Likewise.  Add match_codes.
	(aarch64_simd_reg_or_zero): Accept const as well as const_vector.
	Use aarch64_simd_imm_zero.
	* config/aarch64/aarch64-sve.md: New file.
	* config/aarch64/aarch64.md: Include it.
	(VG_REGNUM, P0_REGNUM, P7_REGNUM, P15_REGNUM): New register numbers.
	(UNSPEC_REV, UNSPEC_LD1_SVE, UNSPEC_ST1_SVE, UNSPEC_MERGE_PTRUE)
	(UNSPEC_PTEST_PTRUE, UNSPEC_UNPACKSHI, UNSPEC_UNPACKUHI)
	(UNSPEC_UNPACKSLO, UNSPEC_UNPACKULO, UNSPEC_PACK)
	(UNSPEC_FLOAT_CONVERT, UNSPEC_WHILE_LO): New unspec constants.
	(sve): New attribute.
	(enabled): Disable instructions with the sve attribute unless
	TARGET_SVE.
	(movqi, movhi): Pass CONST_POLY_INT operaneds through
	aarch64_expand_mov_immediate.
	(*mov<mode>_aarch64, *movsi_aarch64, *movdi_aarch64): Handle
	CNT[BHSD] immediates.
	(movti): Split CONST_POLY_INT moves into two halves.
	(add<mode>3): Accept aarch64_pluslong_or_poly_operand.
	Split additions that need a temporary here if the destination
	is the stack pointer.
	(*add<mode>3_aarch64): Handle ADDVL and ADDPL immediates.
	(*add<mode>3_poly_1): New instruction.
	(set_clobber_cc): New expander.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>

	* simplify-rtx.c (simplify_immed_subreg): Add an inner_bytes
	parameter and use it instead of GET_MODE_SIZE (innermode).  Use
	inner_bytes * BITS_PER_UNIT instead of GET_MODE_BITSIZE (innermode).
	Use CEIL (inner_bytes, GET_MODE_UNIT_SIZE (innermode)) instead of
	GET_MODE_NUNITS (innermode).  Also add a first_elem parameter.
	Change innermode from fixed_mode_size to machine_mode.
	(simplify_subreg): Update call accordingly.  Handle a constant-sized
	subreg of a variable-length CONST_VECTOR.

2018-01-13  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-ssa-address.c (mem_ref_valid_without_offset_p): New function.
	(add_offset_to_base): New function, split out from...
	(create_mem_ref): ...here.  When handling a scale other than 1,
	check first whether the address is valid without the offset.
	Add it into the base if so, leaving the index and scale as-is.

2018-01-12  Jakub Jelinek  <jakub@redhat.com>

	PR c++/83778
	* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin): Call
	fold_for_warn before checking if arg2 is INTEGER_CST.

2018-01-12  Segher Boessenkool  <segher@kernel.crashing.org>

	* config/rs6000/predicates.md (load_multiple_operation): Delete.
	(store_multiple_operation): Delete.
	* config/rs6000/rs6000-cpus.def (601): Remove MASK_STRING.
	* config/rs6000/rs6000-protos.h (rs6000_output_load_multiple): Delete.
	* config/rs6000/rs6000-string.c (expand_block_move): Delete everything
	guarded by TARGET_STRING.
	(rs6000_output_load_multiple): Delete.
	* config/rs6000/rs6000.c (rs6000_option_override_internal): Delete
	OPTION_MASK_STRING / TARGET_STRING handling.
	(print_operand) <'N', 'O'>: Add comment that these are unused now.
	(const rs6000_opt_masks) <"string">: Change mask to 0.
	* config/rs6000/rs6000.h (TARGET_DEFAULT): Remove MASK_STRING.
	(MASK_STRING): Delete.
	* config/rs6000/rs6000.md (*mov<mode>_string): Delete TARGET_STRING
	parts.  Simplify.
	(load_multiple): Delete.
	(*ldmsi8): Delete.
	(*ldmsi7): Delete.
	(*ldmsi6): Delete.
	(*ldmsi5): Delete.
	(*ldmsi4): Delete.
	(*ldmsi3): Delete.
	(store_multiple): Delete.
	(*stmsi8): Delete.
	(*stmsi7): Delete.
	(*stmsi6): Delete.
	(*stmsi5): Delete.
	(*stmsi4): Delete.
	(*stmsi3): Delete.
	(movmemsi_8reg): Delete.
	(corresponding unnamed define_insn): Delete.
	(movmemsi_6reg): Delete.
	(corresponding unnamed define_insn): Delete.
	(movmemsi_4reg): Delete.
	(corresponding unnamed define_insn): Delete.
	(movmemsi_2reg): Delete.
	(corresponding unnamed define_insn): Delete.
	(movmemsi_1reg): Delete.
	(corresponding unnamed define_insn): Delete.
	* config/rs6000/rs6000.opt (mno-string): New.
	(mstring): Replace by deprecation warning stub.
	* doc/invoke.texi (RS/6000 and PowerPC Options): Delete -mstring.

2018-01-12  Jakub Jelinek  <jakub@redhat.com>

	* regrename.c (regrename_do_replace): If replacing the same
	reg multiple times, try to reuse last created gen_raw_REG.

	PR debug/81155
	* bb-reorder.c (pass_partition_blocks::gate): In lto don't partition
	main to workaround a bug in GDB.

2018-01-12  Tom de Vries  <tom@codesourcery.com>

	PR target/83737
	* config.gcc (nvptx*-*-*): Set use_gcc_stdint=wrap.

2018-01-12  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/80481
	* ira-color.c (get_cap_member): New function.
	(allocnos_conflict_by_live_ranges_p): Use it.
	(slot_coalesced_allocno_live_ranges_intersect_p): Add assert.
	(setup_slot_coalesced_allocno_live_ranges): Ditto.

2018-01-12  Uros Bizjak  <ubizjak@gmail.com>

	PR target/83628
	* config/alpha/alpha.md (*saddsi_1): New insn_ans_split pattern.
	(*saddl_se_1): Ditto.
	(*ssubsi_1): Ditto.
	(*saddl_se_1): Ditto.

2018-01-12  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-predcom.c (aff_combination_dr_offset): Use wi::to_poly_widest
	rather than wi::to_widest for DR_INITs.
	* tree-vect-data-refs.c (vect_find_same_alignment_drs): Use
	wi::to_poly_offset rather than wi::to_offset for DR_INIT.
	(vect_analyze_data_ref_accesses): Require both DR_INITs to be
	INTEGER_CSTs.
	(vect_analyze_group_access_1): Note that here.

2018-01-12  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vectorizer.c (get_vec_alignment_for_array_type): Handle
	polynomial type sizes.

2018-01-12  Richard Sandiford  <richard.sandiford@linaro.org>

	* gimplify.c (gimple_add_tmp_var_fn): Allow variables to have a
	poly_uint64 size, rather than requiring an unsigned HOST_WIDE_INT size.
	(gimple_add_tmp_var): Likewise.

2018-01-12  Martin Liska  <mliska@suse.cz>

	* gimple.c (gimple_alloc_counts): Use uint64_t instead of int.
	(gimple_alloc_sizes): Likewise.
	(dump_gimple_statistics): Use PRIu64 in printf format.
	* gimple.h: Change uint64_t to int.

2018-01-12  Martin Liska  <mliska@suse.cz>

	* tree-core.h: Use uint64_t instead of int.
	* tree.c (tree_node_counts): Likewise.
	(tree_node_sizes): Likewise.
	(dump_tree_statistics): Use PRIu64 in printf format.

2018-01-12  Martin Liska  <mliska@suse.cz>

	* Makefile.in: As qsort_chk is implemented in vec.c, add
	vec.o to linkage of gencfn-macros.
	* tree.c (build_new_poly_int_cst): Add CXX_MEM_STAT_INFO as it's
	passing the info to record_node_allocation_statistics.
	(test_vector_cst_patterns): Add CXX_MEM_STAT_INFO to declaration
	and pass the info.
	* ggc-common.c (struct ggc_usage): Add operator== and use
	it in operator< and compare function.
	* mem-stats.h (struct mem_usage): Likewise.
	* vec.c (struct vec_usage): Remove operator< and compare
	function. Can be simply inherited.

2018-01-12  Martin Jambor  <mjambor@suse.cz>

	PR target/81616
	* params.def: New parameter PARAM_AVOID_FMA_MAX_BITS.
	* tree-ssa-math-opts.c: Include domwalk.h.
	(convert_mult_to_fma_1): New function.
	(fma_transformation_info): New type.
	(fma_deferring_state): Likewise.
	(cancel_fma_deferring): New function.
	(result_of_phi): Likewise.
	(last_fma_candidate_feeds_initial_phi): Likewise.
	(convert_mult_to_fma): Added deferring logic, split actual
	transformation to convert_mult_to_fma_1.
	(math_opts_dom_walker): New type.
	(math_opts_dom_walker::after_dom_children): New method, body moved
	here from pass_optimize_widening_mul::execute, added deferring logic
	bits.
	(pass_optimize_widening_mul::execute): Moved most of code to
	math_opts_dom_walker::after_dom_children.
	* config/i386/x86-tune.def (X86_TUNE_AVOID_128FMA_CHAINS): New.
	* config/i386/i386.c (ix86_option_override_internal): Added
	maybe_setting of PARAM_AVOID_FMA_MAX_BITS.

2018-01-12  Richard Biener  <rguenther@suse.de>

	PR debug/83157
	* dwarf2out.c (gen_variable_die): Do not reset old_die for
	inline instance vars.

2018-01-12  Oleg Endo  <olegendo@gcc.gnu.org>

	PR target/81819
	* config/rx/rx.c (rx_is_restricted_memory_address):
	Handle SUBREG case.

2018-01-12  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/80846
	* target.def (split_reduction): New target hook.
	* targhooks.c (default_split_reduction): New function.
	* targhooks.h (default_split_reduction): Declare.
	* tree-vect-loop.c (vect_create_epilog_for_reduction): If the
	target requests first reduce vectors by combining low and high
	parts.
	* tree-vect-stmts.c (vect_gen_perm_mask_any): Adjust.
	(get_vectype_for_scalar_type_and_size): Export.
	* tree-vectorizer.h (get_vectype_for_scalar_type_and_size): Declare.
	* doc/tm.texi.in (TARGET_VECTORIZE_SPLIT_REDUCTION): Document.
	* doc/tm.texi: Regenerate.
	* config/i386/i386.c (ix86_split_reduction): Implement
	TARGET_VECTORIZE_SPLIT_REDUCTION.

2018-01-12  Eric Botcazou  <ebotcazou@adacore.com>

	PR target/83368
	* config/sparc/sparc.h (PIC_OFFSET_TABLE_REGNUM): Set to INVALID_REGNUM
	in PIC mode except for TARGET_VXWORKS_RTP.
	* config/sparc/sparc.c: Include cfgrtl.h.
	(TARGET_INIT_PIC_REG): Define.
	(TARGET_USE_PSEUDO_PIC_REG): Likewise.
	(sparc_pic_register_p): New predicate.
	(sparc_legitimate_address_p): Use it.
	(sparc_legitimize_pic_address): Likewise.
	(sparc_delegitimize_address): Likewise.
	(sparc_mode_dependent_address_p): Likewise.
	(gen_load_pcrel_sym): Remove 4th parameter.
	(load_got_register): Adjust call to above.  Remove obsolete stuff.
	(sparc_expand_prologue): Do not call load_got_register here.
	(sparc_flat_expand_prologue): Likewise.
	(sparc_output_mi_thunk): Set the pic_offset_table_rtx object.
	(sparc_use_pseudo_pic_reg): New function.
	(sparc_init_pic_reg): Likewise.
	* config/sparc/sparc.md (vxworks_load_got): Set the GOT register.
	(builtin_setjmp_receiver): Enable only for TARGET_VXWORKS_RTP.

2018-01-12  Christophe Lyon  <christophe.lyon@linaro.org>

	* doc/sourcebuild.texi (Effective-Target Keywords, Other attributes):
	Add item for branch_cost.

2018-01-12  Eric Botcazou  <ebotcazou@adacore.com>

	PR rtl-optimization/83565
	* rtlanal.c (nonzero_bits1): On WORD_REGISTER_OPERATIONS machines, do
	not extend the result to a larger mode for rotate operations.
	(num_sign_bit_copies1): Likewise.

2018-01-12  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	PR target/40411
	* config/sol2.h (STARTFILE_ARCH_SPEC): Don't use with -shared or
	-symbolic.
	Use values-Xc.o for -pedantic.
	Link with values-xpg4.o for C90, values-xpg6.o otherwise.

2018-01-12  Martin Liska  <mliska@suse.cz>

	PR ipa/83054
	* ipa-devirt.c (final_warning_record::grow_type_warnings):
	New function.
	(possible_polymorphic_call_targets): Use it.
	(ipa_devirt): Likewise.

2018-01-12  Martin Liska  <mliska@suse.cz>

	* profile-count.h (enum profile_quality): Use 0 as invalid
	enum value of profile_quality.

2018-01-12  Chung-Ju Wu  <jasonwucj@gmail.com>

	* doc/invoke.texi (NDS32 Options): Add -mext-perf, -mext-perf2 and
	-mext-string options.

2018-01-12  Richard Biener  <rguenther@suse.de>

	* lto-streamer-out.c (DFS::DFS_write_tree_body): Process
	DECL_DEBUG_EXPR conditional on DECL_HAS_DEBUG_EXPR_P.
	* tree-streamer-in.c (lto_input_ts_decl_common_tree_pointers):
	Likewise.
	* tree-streamer-out.c (write_ts_decl_common_tree_pointers): Likewise.

2018-01-11  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* configure.ac (--with-long-double-format): Add support for the
	configuration option to change the default long double format on
	PowerPC systems.
	* config.gcc (powerpc*-linux*-*): Likewise.
	* configure: Regenerate.
	* config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): If long
	double is IEEE, define __KC__ and __KF__ to allow floatn.h to be
	used without modification.

2018-01-11  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/rs6000-builtin.def (BU_P7_MISC_X): New #define.
	(SPEC_BARRIER): New instantiation of BU_P7_MISC_X.
	* config/rs6000/rs6000.c (rs6000_expand_builtin): Handle
	MISC_BUILTIN_SPEC_BARRIER.
	(rs6000_init_builtins): Likewise.
	* config/rs6000/rs6000.md (UNSPECV_SPEC_BARRIER): New UNSPECV
	enum value.
	(speculation_barrier): New define_insn.
	* doc/extend.texi: Document __builtin_speculation_barrier.

2018-01-11  Jakub Jelinek  <jakub@redhat.com>

	PR target/83203
	* config/i386/i386.c (ix86_expand_vector_init_one_nonzero): If one_var
	is 0, for V{8,16}S[IF] and V[48]D[IF]mode use gen_vec_set<mode>_0.
	* config/i386/sse.md (VI8_AVX_AVX512F, VI4F_256_512): New mode
	iterators.
	(ssescalarmodesuffix): Add 512-bit vectors.  Use "d" or "q" for
	integral modes instead of "ss" and "sd".
	(vec_set<mode>_0): New define_insns for 256-bit and 512-bit
	vectors with 32-bit and 64-bit elements.
	(vecdupssescalarmodesuffix): New mode attribute.
	(vec_dup<mode>): Use it.

2018-01-11  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/83330
	* config/i386/i386.c (ix86_compute_frame_layout): Align stack
	frame if argument is passed on stack.

2018-01-11  Jakub Jelinek  <jakub@redhat.com>

	PR target/82682
	* ree.c (combine_reaching_defs): Optimize also
	reg2=exp; reg1=reg2; reg2=any_extend(reg1); into
	reg2=any_extend(exp); reg1=reg2;, formatting fix.

2018-01-11  Jan Hubicka  <hubicka@ucw.cz>

	PR middle-end/83189
	* gimple-ssa-isolate-paths.c (isolate_path): Fix profile update.

2018-01-11  Jan Hubicka  <hubicka@ucw.cz>

	PR middle-end/83718
	* tree-inline.c (copy_cfg_body): Adjust num&den for scaling
	after they are computed.

2018-01-11  Bin Cheng  <bin.cheng@arm.com>

	PR tree-optimization/83695
	* gimple-loop-linterchange.cc
	(tree_loop_interchange::interchange_loops): Call scev_reset_htab to
	reset cached scev information after interchange.
	(pass_linterchange::execute): Remove call to scev_reset_htab.

2018-01-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

	* config/arm/arm_neon.h (vfmlal_lane_low_u32, vfmlal_lane_high_u32,
	vfmlalq_laneq_low_u32, vfmlalq_lane_low_u32, vfmlal_laneq_low_u32,
	vfmlalq_laneq_high_u32, vfmlalq_lane_high_u32, vfmlal_laneq_high_u32,
	vfmlsl_lane_low_u32, vfmlsl_lane_high_u32, vfmlslq_laneq_low_u32,
	vfmlslq_lane_low_u32, vfmlsl_laneq_low_u32, vfmlslq_laneq_high_u32,
	vfmlslq_lane_high_u32, vfmlsl_laneq_high_u32): Define.
	* config/arm/arm_neon_builtins.def (vfmal_lane_low,
	vfmal_lane_lowv4hf, vfmal_lane_lowv8hf, vfmal_lane_high,
	vfmal_lane_highv4hf, vfmal_lane_highv8hf, vfmsl_lane_low,
	vfmsl_lane_lowv4hf, vfmsl_lane_lowv8hf, vfmsl_lane_high,
	vfmsl_lane_highv4hf, vfmsl_lane_highv8hf): New sets of builtins.
	* config/arm/iterators.md (VFMLSEL2, vfmlsel2): New mode attributes.
	(V_lane_reg): Likewise.
	* config/arm/neon.md (neon_vfm<vfml_op>l_lane_<vfml_half><VCVTF:mode>):
	New define_expand.
	(neon_vfm<vfml_op>l_lane_<vfml_half><vfmlsel2><mode>): Likewise.
	(vfmal_lane_low<mode>_intrinsic,
	vfmal_lane_low<vfmlsel2><mode>_intrinsic,
	vfmal_lane_high<vfmlsel2><mode>_intrinsic,
	vfmal_lane_high<mode>_intrinsic, vfmsl_lane_low<mode>_intrinsic,
	vfmsl_lane_low<vfmlsel2><mode>_intrinsic,
	vfmsl_lane_high<vfmlsel2><mode>_intrinsic,
	vfmsl_lane_high<mode>_intrinsic): New define_insns.

2018-01-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

	* config/arm/arm-cpus.in (fp16fml): New feature.
	(ALL_SIMD): Add fp16fml.
	(armv8.2-a): Add fp16fml as an option.
	(armv8.3-a): Likewise.
	(armv8.4-a): Add fp16fml as part of fp16.
	* config/arm/arm.h (TARGET_FP16FML): Define.
	* config/arm/arm-c.c (arm_cpu_builtins): Define __ARM_FEATURE_FP16_FML
	when appropriate.
	* config/arm/arm-modes.def (V2HF): Define.
	* config/arm/arm_neon.h (vfmlal_low_u32, vfmlsl_low_u32,
	vfmlal_high_u32, vfmlsl_high_u32, vfmlalq_low_u32,
	vfmlslq_low_u32, vfmlalq_high_u32, vfmlslq_high_u32): Define.
	* config/arm/arm_neon_builtins.def (vfmal_low, vfmal_high,
	vfmsl_low, vfmsl_high): New set of builtins.
	* config/arm/iterators.md (PLUSMINUS): New code iterator.
	(vfml_op): New code attribute.
	(VFMLHALVES): New int iterator.
	(VFML, VFMLSEL): New mode attributes.
	(V_reg): Define mapping for V2HF.
	(V_hi, V_lo): New mode attributes.
	(VF_constraint): Likewise.
	(vfml_half, vfml_half_selector): New int attributes.
	* config/arm/neon.md (neon_vfm<vfml_op>l_<vfml_half><mode>): New
	define_expand.
	(vfmal_low<mode>_intrinsic, vfmsl_high<mode>_intrinsic,
	vfmal_high<mode>_intrinsic, vfmsl_low<mode>_intrinsic):
	New define_insn.
	* config/arm/t-arm-elf (v8_fps): Add fp16fml.
	* config/arm/t-multilib (v8_2_a_simd_variants): Add fp16fml.
	* config/arm/unspecs.md (UNSPEC_VFML_LO, UNSPEC_VFML_HI): New unspecs.
	* doc/invoke.texi (ARM Options): Document fp16fml.  Update armv8.4-a
	documentation.
	* doc/sourcebuild.texi (arm_fp16fml_neon_ok, arm_fp16fml_neon):
	Document new effective target and option set.

2017-01-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

	* config/arm/arm-cpus.in (armv8_4): New feature.
	(ARMv8_4a): New fgroup.
	(armv8.4-a): New arch.
	* config/arm/arm-tables.opt: Regenerate.
	* config/arm/t-aprofile: Add matching rules for -march=armv8.4-a.
	* config/arm/t-arm-elf (all_v8_archs): Add armv8.4-a.
	* config/arm/t-multilib (v8_4_a_simd_variants): New variable.
	Add matching rules for -march=armv8.4-a and extensions.
	* doc/invoke.texi (ARM Options): Document -march=armv8.4-a.

2018-01-11  Oleg Endo  <olegendo@gcc.gnu.org>

	PR target/81821
	* config/rx/rx.md (BW): New mode attribute.
	(sync_lock_test_and_setsi): Add mode suffix to insn output.

2018-01-11  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83435
	* graphite.c (canonicalize_loop_form): Ignore fake loop exit edges.
	* graphite-scop-detection.c (scop_detection::get_sese): Likewise.
	* tree-vrp.c (add_assert_info): Drop TREE_OVERFLOW if they appear.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* config/aarch64/aarch64.c (aarch64_address_info): Add a const_offset
	field.
	(aarch64_classify_address): Initialize it.  Track polynomial offsets.
	(aarch64_print_address_internal): Use it to check for a zero offset.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* config/aarch64/aarch64-modes.def (NUM_POLY_INT_COEFFS): Set to 2.
	* config/aarch64/aarch64-protos.h (aarch64_initial_elimination_offset):
	Return a poly_int64 rather than a HOST_WIDE_INT.
	(aarch64_offset_7bit_signed_scaled_p): Take the offset as a poly_int64
	rather than a HOST_WIDE_INT.
	* config/aarch64/aarch64.h (aarch64_frame): Protect with
	HAVE_POLY_INT_H rather than HOST_WIDE_INT.  Change locals_offset,
	hard_fp_offset, frame_size, initial_adjust, callee_offset and
	final_offset from HOST_WIDE_INT to poly_int64.
	* config/aarch64/aarch64-builtins.c (aarch64_simd_expand_args): Use
	to_constant when getting the number of units in an Advanced SIMD
	mode.
	(aarch64_builtin_vectorized_function): Check for a constant number
	of units.
	* config/aarch64/aarch64-simd.md (mov<mode>): Handle polynomial
	GET_MODE_SIZE.
	(aarch64_ld<VSTRUCT:nregs>_lane<VALLDIF:mode>): Use the nunits
	attribute instead of GET_MODE_NUNITS.
	* config/aarch64/aarch64.c (aarch64_hard_regno_nregs)
	(aarch64_class_max_nregs): Use the constant_lowest_bound of the
	GET_MODE_SIZE for fixed-size registers.
	(aarch64_const_vec_all_same_in_range_p): Use const_vec_duplicate_p.
	(aarch64_hard_regno_call_part_clobbered, aarch64_classify_index)
	(aarch64_mode_valid_for_sched_fusion_p, aarch64_classify_address)
	(aarch64_legitimize_address_displacement, aarch64_secondary_reload)
	(aarch64_print_operand, aarch64_print_address_internal)
	(aarch64_address_cost, aarch64_rtx_costs, aarch64_register_move_cost)
	(aarch64_short_vector_p, aapcs_vfp_sub_candidate)
	(aarch64_simd_attr_length_rglist, aarch64_operands_ok_for_ldpstp):
	Handle polynomial GET_MODE_SIZE.
	(aarch64_hard_regno_caller_save_mode): Likewise.  Return modes
	wider than SImode without modification.
	(tls_symbolic_operand_type): Use strip_offset instead of split_const.
	(aarch64_pass_by_reference, aarch64_layout_arg, aarch64_pad_reg_upward)
	(aarch64_gimplify_va_arg_expr): Assert that we don't yet handle
	passing and returning SVE modes.
	(aarch64_function_value, aarch64_layout_arg): Use gen_int_mode
	rather than GEN_INT.
	(aarch64_emit_probe_stack_range): Take the size as a poly_int64
	rather than a HOST_WIDE_INT, but call sorry if it isn't constant.
	(aarch64_allocate_and_probe_stack_space): Likewise.
	(aarch64_layout_frame): Cope with polynomial offsets.
	(aarch64_save_callee_saves, aarch64_restore_callee_saves): Take the
	start_offset as a poly_int64 rather than a HOST_WIDE_INT.  Track
	polynomial offsets.
	(offset_9bit_signed_unscaled_p, offset_12bit_unsigned_scaled_p)
	(aarch64_offset_7bit_signed_scaled_p): Take the offset as a
	poly_int64 rather than a HOST_WIDE_INT.
	(aarch64_get_separate_components, aarch64_process_components)
	(aarch64_expand_prologue, aarch64_expand_epilogue)
	(aarch64_use_return_insn_p): Handle polynomial frame offsets.
	(aarch64_anchor_offset): New function, split out from...
	(aarch64_legitimize_address): ...here.
	(aarch64_builtin_vectorization_cost): Handle polynomial
	TYPE_VECTOR_SUBPARTS.
	(aarch64_simd_check_vect_par_cnst_half): Handle polynomial
	GET_MODE_NUNITS.
	(aarch64_simd_make_constant, aarch64_expand_vector_init): Get the
	number of elements from the PARALLEL rather than the mode.
	(aarch64_shift_truncation_mask): Use GET_MODE_UNIT_BITSIZE
	rather than GET_MODE_BITSIZE.
	(aarch64_evpc_trn, aarch64_evpc_uzp, aarch64_evpc_ext)
	(aarch64_evpc_rev, aarch64_evpc_dup, aarch64_evpc_zip)
	(aarch64_expand_vec_perm_const_1): Handle polynomial
	d->perm.length () and d->perm elements.
	(aarch64_evpc_tbl): Likewise.  Use nelt rather than GET_MODE_NUNITS.
	Apply to_constant to d->perm elements.
	(aarch64_simd_valid_immediate, aarch64_vec_fpconst_pow_of_2): Handle
	polynomial CONST_VECTOR_NUNITS.
	(aarch64_move_pointer): Take amount as a poly_int64 rather
	than an int.
	(aarch64_progress_pointer): Avoid temporary variable.
	* config/aarch64/aarch64.md (aarch64_<crc_variant>): Use
	the mode attribute instead of GET_MODE.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* config/aarch64/aarch64.c (aarch64_force_temporary): Assert that
	x exists before using it.
	(aarch64_add_constant_internal): Rename to...
	(aarch64_add_offset_1): ...this.  Replace regnum with separate
	src and dest rtxes.  Handle the case in which they're different,
	including when the offset is zero.  Replace scratchreg with an rtx.
	Use 2 additions if there is no spare register into which we can
	move a 16-bit constant.
	(aarch64_add_constant): Delete.
	(aarch64_add_offset): Replace reg with separate src and dest
	rtxes.  Take a poly_int64 offset instead of a HOST_WIDE_INT.
	Use aarch64_add_offset_1.
	(aarch64_add_sp, aarch64_sub_sp): Take the scratch register as
	an rtx rather than an int.  Take the delta as a poly_int64
	rather than a HOST_WIDE_INT.  Use aarch64_add_offset.
	(aarch64_expand_mov_immediate): Update uses of aarch64_add_offset.
	(aarch64_expand_prologue): Update calls to aarch64_sub_sp,
	aarch64_allocate_and_probe_stack_space and aarch64_add_offset.
	(aarch64_expand_epilogue): Update calls to aarch64_add_offset
	and aarch64_add_sp.
	(aarch64_output_mi_thunk): Use aarch64_add_offset rather than
	aarch64_add_constant.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>

	* config/aarch64/aarch64.c (aarch64_reinterpret_float_as_int):
	Use scalar_float_mode.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>

	* config/aarch64/aarch64-simd.md
	(aarch64_fml<f16mac1>l<f16quad>_low<mode>): Avoid GET_MODE_NUNITS.
	(aarch64_fml<f16mac1>l<f16quad>_high<mode>): Likewise.
	(aarch64_fml<f16mac1>l_lane_lowv2sf): Likewise.
	(aarch64_fml<f16mac1>l_lane_highv2sf): Likewise.
	(aarch64_fml<f16mac1>lq_laneq_lowv4sf): Likewise.
	(aarch64_fml<f16mac1>lq_laneq_highv4sf): Likewise.
	(aarch64_fml<f16mac1>l_laneq_lowv2sf): Likewise.
	(aarch64_fml<f16mac1>l_laneq_highv2sf): Likewise.
	(aarch64_fml<f16mac1>lq_lane_lowv4sf): Likewise.
	(aarch64_fml<f16mac1>lq_lane_highv4sf): Likewise.

2018-01-11  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	PR target/83514
	* config/arm/arm.c (arm_declare_function_name): Set arch_to_print if
	targ_options->x_arm_arch_string is non NULL.

2018-01-11  Tamar Christina  <tamar.christina@arm.com>

	* config/aarch64/aarch64.h
	(AARCH64_FL_FOR_ARCH8_4): Add  AARCH64_FL_DOTPROD.

2018-01-11  Sudakshina Das  <sudi.das@arm.com>

	PR target/82096
	* expmed.c (emit_store_flag_force): Swap if const op0
	and change VOIDmode to mode of op0.

2018-01-11  Richard Sandiford  <richard.sandiford@linaro.org>

	PR rtl-optimization/83761
	* caller-save.c (replace_reg_with_saved_mem): Pass bits rather
	than bytes to mode_for_size.

2018-01-10  Jan Hubicka  <hubicka@ucw.cz>

	PR middle-end/83189
	* gfortran.fortran-torture/compile/pr83189.f90: New testcase.
	* tree-ssa-loop-manip.c (tree_transform_and_unroll_loop): Handle zero
	profile.

2018-01-10  Jan Hubicka  <hubicka@ucw.cz>

	PR middle-end/83575
	* cfgrtl.c (rtl_verify_edges): Only verify fixability of partition
	when in layout mode.
	(cfg_layout_finalize): Do not verify cfg before we are out of layout.
	* cfgcleanup.c (try_optimize_cfg): Only verify flow info when doing
	partition fixup.

2018-01-10  Michael Collison  <michael.collison@arm.com>

	* config/aarch64/aarch64-modes.def (V2HF): New VECTOR_MODE.
	* config/aarch64/aarch64-option-extension.def: Add
	AARCH64_OPT_EXTENSION of 'fp16fml'.
	* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
	(__ARM_FEATURE_FP16_FML): Define if TARGET_F16FML is true.
	* config/aarch64/predicates.md (aarch64_lane_imm3): New predicate.
	* config/aarch64/constraints.md (Ui7): New constraint.
	* config/aarch64/iterators.md (VFMLA_W): New mode iterator.
	(VFMLA_SEL_W): Ditto.
	(f16quad): Ditto.
	(f16mac1): Ditto.
	(VFMLA16_LOW): New int iterator.
	(VFMLA16_HIGH): Ditto.
	(UNSPEC_FMLAL): New unspec.
	(UNSPEC_FMLSL): Ditto.
	(UNSPEC_FMLAL2): Ditto.
	(UNSPEC_FMLSL2): Ditto.
	(f16mac): New code attribute.
	* config/aarch64/aarch64-simd-builtins.def
	(aarch64_fmlal_lowv2sf): Ditto.
	(aarch64_fmlsl_lowv2sf): Ditto.
	(aarch64_fmlalq_lowv4sf): Ditto.
	(aarch64_fmlslq_lowv4sf): Ditto.
	(aarch64_fmlal_highv2sf): Ditto.
	(aarch64_fmlsl_highv2sf): Ditto.
	(aarch64_fmlalq_highv4sf): Ditto.
	(aarch64_fmlslq_highv4sf): Ditto.
	(aarch64_fmlal_lane_lowv2sf): Ditto.
	(aarch64_fmlsl_lane_lowv2sf): Ditto.
	(aarch64_fmlal_laneq_lowv2sf): Ditto.
	(aarch64_fmlsl_laneq_lowv2sf): Ditto.
	(aarch64_fmlalq_lane_lowv4sf): Ditto.
	(aarch64_fmlsl_lane_lowv4sf): Ditto.
	(aarch64_fmlalq_laneq_lowv4sf): Ditto.
	(aarch64_fmlsl_laneq_lowv4sf): Ditto.
	(aarch64_fmlal_lane_highv2sf): Ditto.
	(aarch64_fmlsl_lane_highv2sf): Ditto.
	(aarch64_fmlal_laneq_highv2sf): Ditto.
	(aarch64_fmlsl_laneq_highv2sf): Ditto.
	(aarch64_fmlalq_lane_highv4sf): Ditto.
	(aarch64_fmlsl_lane_highv4sf): Ditto.
	(aarch64_fmlalq_laneq_highv4sf): Ditto.
	(aarch64_fmlsl_laneq_highv4sf): Ditto.
	* config/aarch64/aarch64-simd.md:
	(aarch64_fml<f16mac1>l<f16quad>_low<mode>): New pattern.
	(aarch64_fml<f16mac1>l<f16quad>_high<mode>): Ditto.
	(aarch64_simd_fml<f16mac1>l<f16quad>_low<mode>): Ditto.
	(aarch64_simd_fml<f16mac1>l<f16quad>_high<mode>): Ditto.
	(aarch64_fml<f16mac1>l_lane_lowv2sf): Ditto.
	(aarch64_fml<f16mac1>l_lane_highv2sf): Ditto.
	(aarch64_simd_fml<f16mac>l_lane_lowv2sf): Ditto.
	(aarch64_simd_fml<f16mac>l_lane_highv2sf): Ditto.
	(aarch64_fml<f16mac1>lq_laneq_lowv4sf): Ditto.
	(aarch64_fml<f16mac1>lq_laneq_highv4sf): Ditto.
	(aarch64_simd_fml<f16mac>lq_laneq_lowv4sf): Ditto.
	(aarch64_simd_fml<f16mac>lq_laneq_highv4sf): Ditto.
	(aarch64_fml<f16mac1>l_laneq_lowv2sf): Ditto.
	(aarch64_fml<f16mac1>l_laneq_highv2sf): Ditto.
	(aarch64_simd_fml<f16mac>l_laneq_lowv2sf): Ditto.
	(aarch64_simd_fml<f16mac>l_laneq_highv2sf): Ditto.
	(aarch64_fml<f16mac1>lq_lane_lowv4sf): Ditto.
	(aarch64_fml<f16mac1>lq_lane_highv4sf): Ditto.
	(aarch64_simd_fml<f16mac>lq_lane_lowv4sf): Ditto.
	(aarch64_simd_fml<f16mac>lq_lane_highv4sf): Ditto.
	* config/aarch64/arm_neon.h (vfmlal_low_u32): New intrinsic.
	(vfmlsl_low_u32): Ditto.
	(vfmlalq_low_u32): Ditto.
	(vfmlslq_low_u32): Ditto.
	(vfmlal_high_u32): Ditto.
	(vfmlsl_high_u32): Ditto.
	(vfmlalq_high_u32): Ditto.
	(vfmlslq_high_u32): Ditto.
	(vfmlal_lane_low_u32): Ditto.
	(vfmlsl_lane_low_u32): Ditto.
	(vfmlal_laneq_low_u32): Ditto.
	(vfmlsl_laneq_low_u32): Ditto.
	(vfmlalq_lane_low_u32): Ditto.
	(vfmlslq_lane_low_u32): Ditto.
	(vfmlalq_laneq_low_u32): Ditto.
	(vfmlslq_laneq_low_u32): Ditto.
	(vfmlal_lane_high_u32): Ditto.
	(vfmlsl_lane_high_u32): Ditto.
	(vfmlal_laneq_high_u32): Ditto.
	(vfmlsl_laneq_high_u32): Ditto.
	(vfmlalq_lane_high_u32): Ditto.
	(vfmlslq_lane_high_u32): Ditto.
	(vfmlalq_laneq_high_u32): Ditto.
	(vfmlslq_laneq_high_u32): Ditto.
	* config/aarch64/aarch64.h (AARCH64_FL_F16SML): New flag.
	(AARCH64_FL_FOR_ARCH8_4): New.
	(AARCH64_ISA_F16FML): New ISA flag.
	(TARGET_F16FML): New feature flag for fp16fml.
	(doc/invoke.texi): Document new fp16fml option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

	* config/aarch64/aarch64-builtins.c:
	(aarch64_types_ternopu_imm_qualifiers, TYPES_TERNOPUI): New.
	* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
	(__ARM_FEATURE_SHA3): Define if TARGET_SHA3 is true.
	* config/aarch64/aarch64.h (AARCH64_FL_SHA3): New flags.
	(AARCH64_ISA_SHA3): New ISA flag.
	(TARGET_SHA3): New feature flag for sha3.
	* config/aarch64/iterators.md (sha512_op): New int attribute.
	(CRYPTO_SHA512): New int iterator.
	(UNSPEC_SHA512H): New unspec.
	(UNSPEC_SHA512H2): Ditto.
	(UNSPEC_SHA512SU0): Ditto.
	(UNSPEC_SHA512SU1): Ditto.
	* config/aarch64/aarch64-simd-builtins.def
	(aarch64_crypto_sha512hqv2di): New builtin.
	(aarch64_crypto_sha512h2qv2di): Ditto.
	(aarch64_crypto_sha512su0qv2di): Ditto.
	(aarch64_crypto_sha512su1qv2di): Ditto.
	(aarch64_eor3qv8hi): Ditto.
	(aarch64_rax1qv2di): Ditto.
	(aarch64_xarqv2di): Ditto.
	(aarch64_bcaxqv8hi): Ditto.
	* config/aarch64/aarch64-simd.md:
	(aarch64_crypto_sha512h<sha512_op>qv2di): New pattern.
	(aarch64_crypto_sha512su0qv2di): Ditto.
	(aarch64_crypto_sha512su1qv2di): Ditto.
	(aarch64_eor3qv8hi): Ditto.
	(aarch64_rax1qv2di): Ditto.
	(aarch64_xarqv2di): Ditto.
	(aarch64_bcaxqv8hi): Ditto.
	* config/aarch64/arm_neon.h (vsha512hq_u64): New intrinsic.
	(vsha512h2q_u64): Ditto.
	(vsha512su0q_u64): Ditto.
	(vsha512su1q_u64): Ditto.
	(veor3q_u16): Ditto.
	(vrax1q_u64): Ditto.
	(vxarq_u64): Ditto.
	(vbcaxq_u16): Ditto.
	* config/arm/types.md (crypto_sha512): New type attribute.
	(crypto_sha3): Ditto.
	(doc/invoke.texi): Document new sha3 option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

	* config/aarch64/aarch64-builtins.c:
	(aarch64_types_quadopu_imm_qualifiers, TYPES_QUADOPUI): New.
	* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
	(__ARM_FEATURE_SM3): Define if TARGET_SM4 is true.
	(__ARM_FEATURE_SM4): Define if TARGET_SM4 is true.
	* config/aarch64/aarch64.h (AARCH64_FL_SM4): New flags.
	(AARCH64_ISA_SM4): New ISA flag.
	(TARGET_SM4): New feature flag for sm4.
	* config/aarch64/aarch64-simd-builtins.def
	(aarch64_sm3ss1qv4si): Ditto.
	(aarch64_sm3tt1aq4si): Ditto.
	(aarch64_sm3tt1bq4si): Ditto.
	(aarch64_sm3tt2aq4si): Ditto.
	(aarch64_sm3tt2bq4si): Ditto.
	(aarch64_sm3partw1qv4si): Ditto.
	(aarch64_sm3partw2qv4si): Ditto.
	(aarch64_sm4eqv4si): Ditto.
	(aarch64_sm4ekeyqv4si): Ditto.
	* config/aarch64/aarch64-simd.md:
	(aarch64_sm3ss1qv4si): Ditto.
	(aarch64_sm3tt<sm3tt_op>qv4si): Ditto.
	(aarch64_sm3partw<sm3part_op>qv4si): Ditto.
	(aarch64_sm4eqv4si): Ditto.
	(aarch64_sm4ekeyqv4si): Ditto.
	* config/aarch64/iterators.md (sm3tt_op): New int iterator.
	(sm3part_op): Ditto.
	(CRYPTO_SM3TT): Ditto.
	(CRYPTO_SM3PART): Ditto.
	(UNSPEC_SM3SS1): New unspec.
	(UNSPEC_SM3TT1A): Ditto.
	(UNSPEC_SM3TT1B): Ditto.
	(UNSPEC_SM3TT2A): Ditto.
	(UNSPEC_SM3TT2B): Ditto.
	(UNSPEC_SM3PARTW1): Ditto.
	(UNSPEC_SM3PARTW2): Ditto.
	(UNSPEC_SM4E): Ditto.
	(UNSPEC_SM4EKEY): Ditto.
	* config/aarch64/constraints.md (Ui2): New constraint.
	* config/aarch64/predicates.md (aarch64_imm2): New predicate.
	* config/arm/types.md (crypto_sm3): New type attribute.
	(crypto_sm4): Ditto.
	* config/aarch64/arm_neon.h (vsm3ss1q_u32): New intrinsic.
	(vsm3tt1aq_u32): Ditto.
	(vsm3tt1bq_u32): Ditto.
	(vsm3tt2aq_u32): Ditto.
	(vsm3tt2bq_u32): Ditto.
	(vsm3partw1q_u32): Ditto.
	(vsm3partw2q_u32): Ditto.
	(vsm4eq_u32): Ditto.
	(vsm4ekeyq_u32): Ditto.
	(doc/invoke.texi): Document new sm4 option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

	* config/aarch64/aarch64-arches.def (armv8.4-a): New architecture.
	* config/aarch64/aarch64.h (AARCH64_ISA_V8_4): New ISA flag.
	(AARCH64_FL_FOR_ARCH8_4): New.
	(AARCH64_FL_V8_4): New flag.
	(doc/invoke.texi): Document new armv8.4-a option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

	* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
	(__ARM_FEATURE_AES): Define if TARGET_AES is true.
	(__ARM_FEATURE_SHA2): Define if TARGET_SHA2 is true.
	* config/aarch64/aarch64-option-extension.def: Add
	AARCH64_OPT_EXTENSION of 'sha2'.
	(aes): Add AARCH64_OPT_EXTENSION of 'aes'.
	(crypto): Disable sha2 and aes if crypto disabled.
	(crypto): Enable aes and sha2 if enabled.
	(simd): Disable sha2 and aes if simd disabled.
	* config/aarch64/aarch64.h (AARCH64_FL_AES, AARCH64_FL_SHA2):
	New flags.
	(AARCH64_ISA_AES, AARCH64_ISA_SHA2): New ISA flags.
	(TARGET_SHA2): New feature flag for sha2.
	(TARGET_AES): New feature flag for aes.
	* config/aarch64/aarch64-simd.md:
	(aarch64_crypto_aes<aes_op>v16qi): Make pattern
	conditional on TARGET_AES.
	(aarch64_crypto_aes<aesmc_op>v16qi): Ditto.
	(aarch64_crypto_sha1hsi): Make pattern conditional
	on TARGET_SHA2.
	(aarch64_crypto_sha1hv4si): Ditto.
	(aarch64_be_crypto_sha1hv4si): Ditto.
	(aarch64_crypto_sha1su1v4si): Ditto.
	(aarch64_crypto_sha1<sha1_op>v4si): Ditto.
	(aarch64_crypto_sha1su0v4si): Ditto.
	(aarch64_crypto_sha256h<sha256_op>v4si): Ditto.
	(aarch64_crypto_sha256su0v4si): Ditto.
	(aarch64_crypto_sha256su1v4si): Ditto.
	(doc/invoke.texi): Document new aes and sha2 options.

2018-01-10  Martin Sebor  <msebor@redhat.com>

	PR tree-optimization/83781
	* gimple-fold.c (get_range_strlen): Avoid treating arrays of pointers
	as string arrays.

2018-01-11  Martin Sebor  <msebor@gmail.com>
	    Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	PR tree-optimization/83501
	PR tree-optimization/81703

	* tree-ssa-strlen.c (get_string_cst): Rename...
	(get_string_len): ...to this.  Handle global constants.
	(handle_char_store): Adjust.

2018-01-10  Kito Cheng  <kito.cheng@gmail.com>
	    Jim Wilson  <jimw@sifive.com>

	* config/riscv/riscv-protos.h (riscv_output_return): New.
	* config/riscv/riscv.c (struct machine_function): New naked_p field.
	(riscv_attribute_table, riscv_output_return),
	(riscv_handle_fndecl_attribute, riscv_naked_function_p),
	(riscv_allocate_stack_slots_for_args, riscv_warn_func_return): New.
	(riscv_compute_frame_info): Only compute frame->mask if not a naked
	function.
	(riscv_expand_prologue): Add early return for naked function.
	(riscv_expand_epilogue): Likewise.
	(riscv_function_ok_for_sibcall): Return false for naked function.
	(riscv_set_current_function): New.
	(TARGET_SET_CURRENT_FUNCTION, TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS),
	(TARGET_ATTRIBUTE_TABLE, TARGET_WARN_FUNC_RETURN): New.
	* config/riscv/riscv.md (simple_return): Call riscv_output_return.
	* doc/extend.texi (RISC-V Function Attributes): New.

2018-01-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000.c (is_complex_IBM_long_double): Explicitly
	check for 128-bit long double before checking TCmode.
	* config/rs6000/rs6000.h (FLOAT128_IEEE_P): Explicitly check for
	128-bit long doubles before checking TFmode or TCmode.
	(FLOAT128_IBM_P): Likewise.

2018-01-10  Martin Sebor  <msebor@redhat.com>

	PR tree-optimization/83671
	* builtins.c (c_strlen): Unconditionally return zero for the empty
	string.
	Use -Warray-bounds for warnings.
	* gimple-fold.c (get_range_strlen): Handle non-constant lengths
	for non-constant array indices with COMPONENT_REF, arrays of
	arrays, and pointers to arrays.
	(gimple_fold_builtin_strlen): Determine and set length range for
	non-constant character arrays.

2018-01-10  Aldy Hernandez  <aldyh@redhat.com>

	PR middle-end/81897
	* tree-ssa-uninit.c (convert_control_dep_chain_into_preds): Skip
	empty blocks.

2018-01-10  Eric Botcazou  <ebotcazou@adacore.com>

	* dwarf2out.c (dwarf2out_var_location): Do not pass NULL to fprintf.

2018-01-10  Peter Bergner  <bergner@vnet.ibm.com>

	PR target/83399
	* config/rs6000/rs6000.c (print_operand) <'y'>: Use
	VECTOR_MEM_ALTIVEC_OR_VSX_P.
	* config/rs6000/vsx.md (*vsx_le_perm_load_<mode> for VSX_D): Use
	indexed_or_indirect_operand predicate.
	(*vsx_le_perm_load_<mode> for VSX_W): Likewise.
	(*vsx_le_perm_load_v8hi): Likewise.
	(*vsx_le_perm_load_v16qi): Likewise.
	(*vsx_le_perm_store_<mode> for VSX_D): Likewise.
	(*vsx_le_perm_store_<mode> for VSX_W): Likewise.
	(*vsx_le_perm_store_v8hi): Likewise.
	(*vsx_le_perm_store_v16qi): Likewise.
	(eight unnamed splitters): Likewise.

2018-01-10  Peter Bergner  <bergner@vnet.ibm.com>

	* config/rs6000/x86intrin.h: Change #warning to #error. Update message.
	* config/rs6000/emmintrin.h: Likewise.
	* config/rs6000/mmintrin.h: Likewise.
	* config/rs6000/xmmintrin.h: Likewise.

2018-01-10  David Malcolm  <dmalcolm@redhat.com>

	PR c++/43486
	* tree-core.h: Document EXPR_LOCATION_WRAPPER_P's usage of
	"public_flag".
	* tree.c (tree_nop_conversion): Return true for location wrapper
	nodes.
	(maybe_wrap_with_location): New function.
	(selftest::check_strip_nops): New function.
	(selftest::test_location_wrappers): New function.
	(selftest::tree_c_tests): Call it.
	* tree.h (STRIP_ANY_LOCATION_WRAPPER): New macro.
	(maybe_wrap_with_location): New decl.
	(EXPR_LOCATION_WRAPPER_P): New macro.
	(location_wrapper_p): New inline function.
	(tree_strip_any_location_wrapper): New inline function.

2018-01-10  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/83735
	* config/i386/i386.c (ix86_compute_frame_layout): Always adjust
	stack_realign_offset for the largest alignment of stack slot
	actually used.
	(ix86_find_max_used_stack_alignment): New function.
	(ix86_finalize_stack_frame_flags): Use it.  Set
	max_used_stack_alignment if we don't realign stack.
	* config/i386/i386.h (machine_function): Add
	max_used_stack_alignment.

2018-01-10  Christophe Lyon  <christophe.lyon@linaro.org>

	* config/arm/arm.opt (-mbranch-cost): New option.
	* config/arm/arm.h (BRANCH_COST): Take arm_branch_cost into
	account.

2018-01-10  Segher Boessenkool  <segher@kernel.crashing.org>

	PR target/83629
	* config/rs6000/rs6000.md (load_toc_v4_PIC_2, load_toc_v4_PIC_3b,
	load_toc_v4_PIC_3c): Wrap const term in CONST RTL.

2018-01-10  Richard Biener  <rguenther@suse.de>

	PR debug/83765
	* dwarf2out.c (gen_subprogram_die): Hoist old_die && declaration
	early out so it also covers the case where we have a non-NULL
	origin.

2018-01-10  Richard Sandiford  <richard.sandiford@linaro.org>

	PR tree-optimization/83753
	* tree-vect-stmts.c (get_group_load_store_type): Use VMAT_CONTIGUOUS
	for non-strided grouped accesses if the number of elements is 1.

2018-01-10  Jan Hubicka  <hubicka@ucw.cz>

	PR target/81616
	* i386.c (ix86_vectorize_builtin_gather): Check TARGET_USE_GATHER.
	* i386.h (TARGET_USE_GATHER): Define.
	* x86-tune.def (X86_TUNE_USE_GATHER): New.

2018-01-10  Martin Liska  <mliska@suse.cz>

	PR bootstrap/82831
	* basic-block.h (CLEANUP_NO_PARTITIONING): New define.
	* bb-reorder.c (pass_reorder_blocks::execute): Do not clean up
	partitioning.
	* cfgcleanup.c (try_optimize_cfg): Fix up partitioning if
	CLEANUP_NO_PARTITIONING is not set.

2018-01-10  Richard Sandiford  <richard.sandiford@linaro.org>

	* doc/rtl.texi: Remove documentation of (const ...) wrappers
	for vectors, as a partial revert of r254296.
	* rtl.h (const_vec_p): Delete.
	(const_vec_duplicate_p): Don't test for vector CONSTs.
	(unwrap_const_vec_duplicate, const_vec_series_p): Likewise.
	* expmed.c (make_tree): Likewise.

	Revert:
	* common.md (E, F): Use CONSTANT_P instead of checking for
	CONST_VECTOR.
	* emit-rtl.c (gen_lowpart_common): Use const_vec_p instead of
	checking for CONST_VECTOR.

2018-01-09  Jan Hubicka  <hubicka@ucw.cz>

	PR middle-end/83575
	* predict.c (force_edge_cold): Handle in more sane way edges
	with no prediction.

2018-01-09  Carl Love  <cel@us.ibm.com>

	* config/rs6002/altivec.md (p8_vmrgow): Add support for V2DI, V2DF,
	V4SI, V4SF types.
	(p8_vmrgew): Add support for V2DI, V2DF, V4SF types.
	* config/rs6000/rs6000-builtin.def: Add definitions for FLOAT2_V2DF,
	VMRGEW_V2DI, VMRGEW_V2DF, VMRGEW_V4SF, VMRGOW_V4SI, VMRGOW_V4SF,
	VMRGOW_V2DI, VMRGOW_V2DF.  Remove definition for VMRGOW.
	* config/rs6000/rs6000-c.c (VSX_BUILTIN_VEC_FLOAT2,
	P8V_BUILTIN_VEC_VMRGEW, P8V_BUILTIN_VEC_VMRGOW):  Add definitions.
	* config/rs6000/rs6000-protos.h: Add extern defition for
	rs6000_generate_float2_double_code.
	* config/rs6000/rs6000.c (rs6000_generate_float2_double_code): Add
	function.
	* config/rs6000/vsx.md (vsx_xvcdpsp): Add define_insn.
	(float2_v2df): Add define_expand.

2018-01-09  Uros Bizjak  <ubizjak@gmail.com>

	PR target/83628
	* combine.c (force_int_to_mode) <case ASHIFT>: Use mode instead of
	op_mode in the force_to_mode call.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

	* config/aarch64/aarch64.c (aarch64_evpc_trn): Use d.perm.series_p
	instead of checking each element individually.
	(aarch64_evpc_uzp): Likewise.
	(aarch64_evpc_zip): Likewise.
	(aarch64_evpc_ext): Likewise.
	(aarch64_evpc_rev): Likewise.
	(aarch64_evpc_dup): Test the encoding for a single duplicated element,
	instead of checking each element individually.  Return true without
	generating rtl if
	(aarch64_vectorize_vec_perm_const): Use all_from_input_p to test
	whether all selected elements come from the same input, instead of
	checking each element individually.  Remove calls to gen_rtx_REG,
	start_sequence and end_sequence and instead assert that no rtl is
	generated.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

	* config/aarch64/aarch64.c (aarch64_legitimate_constant_p): Fix
	order of HIGH and CONST checks.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vect-stmts.c (permute_vec_elements): Create a fresh variable
	if the destination isn't an SSA_NAME.

2018-01-09  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83668
	* graphite.c (canonicalize_loop_closed_ssa): Add edge argument,
	move prologue...
	(canonicalize_loop_form): ... here, renamed from ...
	(canonicalize_loop_closed_ssa_form): ... this and amended to
	swap successor edges for loop exit blocks to make us use
	the RPO order we need for initial schedule generation.

2018-01-09  Joseph Myers  <joseph@codesourcery.com>

	PR tree-optimization/64811
	* match.pd: When optimizing comparisons with Inf, avoid
	introducing or losing exceptions from comparisons with NaN.

2018-01-09  Martin Liska  <mliska@suse.cz>

	PR sanitizer/82517
	* asan.c (shadow_mem_size): Add gcc_assert.

2018-01-09  Georg-Johann Lay  <avr@gjlay.de>

	Don't save registers in main().

	PR target/83738
	* doc/invoke.texi (AVR Options) [-mmain-is-OS_task]: Document it.
	* config/avr/avr.opt (-mmain-is-OS_task): New target option.
	* config/avr/avr.c (avr_set_current_function): Don't error if
	naked, OS_task or OS_main are specified at the same time.
	(avr_function_ok_for_sibcall): Don't disable sibcalls for OS_task,
	OS_main.
	(avr_insert_attributes) [-mmain-is-OS_task] <main>: Add OS_task
	attribute.
	* common/config/avr/avr-common.c (avr_option_optimization_table):
	Switch on -mmain-is-OS_task for optimizing compilations.

2018-01-09  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83572
	* graphite.c: Include cfganal.h.
	(graphite_transform_loops): Connect infinite loops to exit
	and remove fake edges at the end.

2018-01-09  Jan Hubicka  <hubicka@ucw.cz>

	* ipa-inline.c (edge_badness): Revert accidental checkin.

2018-01-09  Jan Hubicka  <hubicka@ucw.cz>

	PR ipa/80763
	* ipa-comdats.c (set_comdat_group): Only set comdat group of real
	symbols; not inline clones.

2018-01-09  Jakub Jelinek  <jakub@redhat.com>

	PR target/83507
	* modulo-sched.c (schedule_reg_moves): Punt if we'd need to move
	hard registers.  Formatting fixes.

	PR preprocessor/83722
	* gcc.c (try_generate_repro): Pass
	&temp_stderr_files[RETRY_ICE_ATTEMPTS - 1] rather than
	&temp_stdout_files[RETRY_ICE_ATTEMPTS - 1] as last argument to
	do_report_bug.

2018-01-08  Monk Chiang  <sh.chiang04@gmail.com>
	    Kito Cheng  <kito.cheng@gmail.com>

	* config/riscv/riscv.c (machine_function::is_leaf): Remove field.
	(riscv_leaf_function_p): Delete.
	(riscv_function_ok_for_sibcall): Return false when TARGET_SAVE_RESTORE.

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

	* config/rs6000/rs6000-string.c (do_load_for_compare_from_addr): New
	function.
	(do_ifelse): New function.
	(do_isel): New function.
	(do_sub3): New function.
	(do_add3): New function.
	(do_load_mask_compare): New function.
	(do_overlap_load_compare): New function.
	(expand_compare_loop): New function.
	(expand_block_compare): Call expand_compare_loop() when appropriate.
	* config/rs6000/rs6000.opt (-mblock-compare-inline-limit): Change
	option description.
	(-mblock-compare-inline-loop-limit): New option.

2018-01-08  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR target/83677
	* config/rs6000/altivec.md (*altivec_vpermr_<mode>_internal):
	Reverse order of second and third operands in first alternative.
	* config/rs6000/rs6000.c (rs6000_expand_vector_set): Reverse order
	of first and second elements in UNSPEC_VPERMR vector.
	(altivec_expand_vec_perm_le): Likewise.

2017-01-08  Jeff Law  <law@redhat.com>

	PR rtl-optimizatin/81308
	* tree-switch-conversion.c (cfg_altered): New file scoped static.
	(process_switch): If group_case_labels makes a change, then set
	cfg_altered.
	(pass_convert_switch::execute): If a switch is converted, then
	set cfg_altered.  Return TODO_cfg_cleanup if cfg_altered is true.

	PR rtl-optimization/81308
	* recog.c (split_all_insns): Conditionally cleanup the CFG after
	splitting insns.

2018-01-08  Vidya Praveen  <vidyapraveen@arm.com>

	PR target/83663 - Revert r255946
	* config/aarch64/aarch64.c (aarch64_expand_vector_init): Modify code
	generation for cases where splatting a value is not useful.
	* simplify-rtx.c (simplify_ternary_operation): Simplify vec_merge
	across a vec_duplicate and a paradoxical subreg forming a vector
	mode to a vec_concat.

2018-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

	* config/arm/t-aprofile (MULTILIB_MATCHES): Add mapping rules for
	-march=armv8.3-a variants.
	* config/arm/t-multilib: Likewise.
	* config/arm/t-arm-elf: Likewise.  Handle dotprod extension.

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

	* config/rs6000/rs6000.md (cceq_ior_compare): Remove * so I can use it
	to generate rtl.
	(cceq_ior_compare_complement): Give it a name so I can use it, and
	change boolean_or_operator predicate to boolean_operator so it can
	be used to generate a crand.
	(eqne): New code iterator.
	(bd/bd_neg): New code_attrs.
	(<bd>_<mode>): New name for ctr<mode>_internal[12] now combined into
	a single define_insn.
	(<bd>tf_<mode>): A new insn pattern for the conditional form branch
	decrement (bdnzt/bdnzf/bdzt/bdzf).
	* config/rs6000/rs6000.c (rs6000_legitimate_combined_insn): Updated
	with the new names of the branch decrement patterns, and added the
	names of the branch decrement conditional patterns.

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83563
	* graphite.c (canonicalize_loop_closed_ssa_form): Reset the SCEV
	cache.

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR middle-end/83713
	* convert.c (do_narrow): Properly guard TYPE_OVERFLOW_WRAPS checks.

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83685
	* tree-ssa-pre.c (create_expression_by_pieces): Do not insert
	references to abnormals.

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR lto/83719
	* dwarf2out.c (output_indirect_strings): Handle empty
	skeleton_debug_str_hash.
	(dwarf2out_early_finish): Index strings for -gsplit-dwarf.

2018-01-08  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (TARGET_TRAMPOLINE_ADJUST_ADDRESS): Delete.
	(emit_store_direct): Likewise.
	(arc_trampoline_adjust_address): Likewise.
	(arc_asm_trampoline_template): New function.
	(arc_initialize_trampoline): Use asm_trampoline_template.
	(TARGET_ASM_TRAMPOLINE_TEMPLATE): Define.
	* config/arc/arc.h (TRAMPOLINE_SIZE): Adjust to 16.
	* config/arc/arc.md (flush_icache): Delete pattern.

2018-01-08  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc-c.def (__ARC_UNALIGNED__): New define.
	* config/arc/arc.h (STRICT_ALIGNMENT): Control this macro using
	munaligned-access.

2018-01-08  Sebastian Huber  <sebastian.huber@embedded-brains.de>

	PR target/83681
	* config/epiphany/epiphany.h (make_pass_mode_switch_use): Guard
	by not USED_FOR_TARGET.
	(make_pass_resolve_sw_modes): Likewise.

2018-01-08  Sebastian Huber  <sebastian.huber@embedded-brains.de>

	* config/nios2/nios2.h (nios2_section_threshold): Guard by not
	USED_FOR_TARGET.

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR middle-end/83580
	* tree-data-ref.c (split_constant_offset): Remove STRIP_NOPS.

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR middle-end/83517
	* match.pd ((t * 2) / 2) -> t): Add missing :c.

2018-01-06  Aldy Hernandez  <aldyh@redhat.com>

	PR middle-end/81897
	* tree-ssa-uninit.c (compute_control_dep_chain): Do not bail on
	basic blocks with a small number of successors.
	(convert_control_dep_chain_into_preds): Improve handling of
	forwarder blocks.
	(dump_predicates): Split apart into...
	(dump_pred_chain): ...here...
	(dump_pred_info): ...and here.
	(can_one_predicate_be_invalidated_p): Add debugging printfs.
	(can_chain_union_be_invalidated_p): Improve check for invalidation
	of paths.
	(uninit_uses_cannot_happen): Avoid unnecessary if
	convert_control_dep_chain_into_preds yielded nothing.

2018-01-06  Martin Sebor  <msebor@redhat.com>

	PR tree-optimization/83640
	* gimple-ssa-warn-restrict.c (builtin_access::builtin_access): Avoid
	subtracting negative offset from size.
	(builtin_access::overlap): Adjust offset bounds of the access to fall
	within the size of the object if possible.

2018-01-06  Richard Sandiford  <richard.sandiford@linaro.org>

	PR rtl-optimization/83699
	* expmed.c (extract_bit_field_1): Restrict the vector usage of
	extract_bit_field_as_subreg to cases in which the extracted
	value is also a vector.

	* lra-constraints.c (process_alt_operands): Test for the equivalence
	substitutions when detecting a possible reload cycle.

2018-01-06  Jakub Jelinek  <jakub@redhat.com>

	PR debug/83480
	* toplev.c (process_options): Don't enable debug_nonbind_markers_p
	by default if flag_selective_schedling{,2}.  Formatting fixes.

	PR rtl-optimization/83682
	* rtl.h (const_vec_duplicate_p): Only return true for VEC_DUPLICATE
	if it has non-VECTOR_MODE element mode.
	(vec_duplicate_p): Likewise.

	PR middle-end/83694
	* cfgexpand.c (expand_debug_expr): Punt if mode1 is VOIDmode
	and bitsize might be greater than MAX_BITSIZE_MODE_ANY_INT.

2018-01-05  Jakub Jelinek  <jakub@redhat.com>

	PR target/83604
	* config/i386/i386-builtin.def
	(__builtin_ia32_vgf2p8affineinvqb_v64qi,
	__builtin_ia32_vgf2p8affineqb_v64qi, __builtin_ia32_vgf2p8mulb_v64qi):
	Require also OPTION_MASK_ISA_AVX512F in addition to
	OPTION_MASK_ISA_GFNI.
	(__builtin_ia32_vgf2p8affineinvqb_v16qi_mask,
	__builtin_ia32_vgf2p8affineqb_v16qi_mask): Require
	OPTION_MASK_ISA_AVX512VL instead of OPTION_MASK_ISA_SSE in addition
	to OPTION_MASK_ISA_GFNI.
	(__builtin_ia32_vgf2p8mulb_v32qi_mask): Require
	OPTION_MASK_ISA_AVX512VL in addition to OPTION_MASK_ISA_GFNI and
	OPTION_MASK_ISA_AVX512BW.
	(__builtin_ia32_vgf2p8mulb_v16qi_mask): Require
	OPTION_MASK_ISA_AVX512VL instead of OPTION_MASK_ISA_AVX512BW in
	addition to OPTION_MASK_ISA_GFNI.
	(__builtin_ia32_vgf2p8affineinvqb_v16qi,
	__builtin_ia32_vgf2p8affineqb_v16qi, __builtin_ia32_vgf2p8mulb_v16qi):
	Require OPTION_MASK_ISA_SSE2 instead of OPTION_MASK_ISA_SSE in addition
	to OPTION_MASK_ISA_GFNI.
	* config/i386/i386.c (def_builtin): Change to builtin isa/isa2 being
	a requirement for all ISAs rather than any of them with a few
	exceptions.
	(ix86_add_new_builtins): Clear OPTION_MASK_ISA_64BIT from isa before
	processing.
	(ix86_expand_builtin): Require all ISAs from builtin's isa and isa2
	bitmasks to be enabled with 3 exceptions, instead of requiring any
	enabled ISA with lots of exceptions.
	* config/i386/sse.md (vgf2p8affineinvqb_<mode><mask_name>,
	vgf2p8affineqb_<mode><mask_name>, vgf2p8mulb_<mode><mask_name>):
	Change avx512bw in isa attribute to avx512f.
	* config/i386/sgxintrin.h: Add license boilerplate.
	* config/i386/vaesintrin.h: Likewise.  Fix macro spelling __AVX512F
	to __AVX512F__ and __AVX512VL to __AVX512VL__.
	(_mm256_aesdec_epi128, _mm256_aesdeclast_epi128, _mm256_aesenc_epi128,
	_mm256_aesenclast_epi128): Enable temporarily avx if __AVX__ is not
	defined.
	* config/i386/gfniintrin.h (_mm_gf2p8mul_epi8,
	_mm_gf2p8affineinv_epi64_epi8, _mm_gf2p8affine_epi64_epi8): Enable
	temporarily sse2 rather than sse if not enabled already.

	PR target/83604
	* config/i386/sse.md (VI248_VLBW): Rename to ...
	(VI248_AVX512VL): ... this.  Don't guard V32HI with TARGET_AVX512BW.
	(vpshrd_<mode><mask_name>, vpshld_<mode><mask_name>,
	vpshrdv_<mode>, vpshrdv_<mode>_mask, vpshrdv_<mode>_maskz,
	vpshrdv_<mode>_maskz_1, vpshldv_<mode>, vpshldv_<mode>_mask,
	vpshldv_<mode>_maskz, vpshldv_<mode>_maskz_1): Use VI248_AVX512VL
	mode iterator instead of VI248_VLBW.

2018-01-05  Jan Hubicka  <hubicka@ucw.cz>

	* ipa-fnsummary.c (record_modified_bb_info): Add OP.
	(record_modified): Skip clobbers; add debug output.
	(param_change_prob): Use sreal frequencies.

2018-01-05  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vect-data-refs.c (vect_compute_data_ref_alignment): Don't
	punt for user-aligned variables.

2018-01-05  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-chrec.c (chrec_contains_symbols): Return true for
	POLY_INT_CST.

2018-01-05  Sudakshina Das  <sudi.das@arm.com>

	PR target/82439
	* simplify-rtx.c (simplify_relational_operation_1): Add simplifications
	of (x|y) == x for BICS pattern.

2018-01-05  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/83605
	* gimple-ssa-strength-reduction.c: Include tree-eh.h.
	(find_candidates_dom_walker::before_dom_children): Ignore stmts that
	can throw.

2018-01-05  Sebastian Huber  <sebastian.huber@embedded-brains.de>

	* config.gcc (epiphany-*-elf*): Add (epiphany-*-rtems*) configuration.
	* config/epiphany/rtems.h: New file.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>
	    Uros Bizjak  <ubizjak@gmail.com>

	PR target/83554
	* config/i386/i386.md (*<rotate_insn>hi3_1 splitter): Use
	QIreg_operand instead of register_operand predicate.
	* config/i386/i386.c (ix86_rop_should_change_byte_p,
	set_rop_modrm_reg_bits, ix86_mitigate_rop): Use -mmitigate-rop in
	comments instead of -fmitigate[-_]rop.

2018-01-04  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	PR bootstrap/81926
	* cgraphunit.c (symbol_table::compile): Switch to text_section
	before calling assembly_start debug hook.
	* run-rtl-passes.c (run_rtl_passes): Likewise.
	Include output.h.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vrp.c (extract_range_from_binary_expr_1): Check
	range_int_cst_p rather than !symbolic_range_p before calling
	extract_range_from_multiplicative_op_1.

2017-01-04  Jeff Law  <law@redhat.com>

	* tree-ssa-math-opts.c (execute_cse_reciprocals_1): Remove
	redundant test in assertion.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

	* doc/rtl.texi: Document machine_mode wrapper classes.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

	* fold-const.c (fold_ternary_loc): Check tree_fits_uhwi_p before
	using tree_to_uhwi.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-ssa-forwprop.c (is_combined_permutation_identity): Allow
	the VEC_PERM_EXPR fold to fail.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>

	PR debug/83585
	* bb-reorder.c (insert_section_boundary_note): Set has_bb_partition
	to switched_sections.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

	PR target/83680
	* config/arm/arm.c (arm_vectorize_vec_perm_const): Fix inverted
	test for d.testing.

2018-01-04  Peter Bergner  <bergner@vnet.ibm.com>

	PR target/83387
	* config/rs6000/rs6000.c (rs6000_discover_homogeneous_aggregate): Do not
	allow arguments in FP registers if TARGET_HARD_FLOAT is false.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>

	PR debug/83666
	* cfgexpand.c (expand_debug_expr) <case BIT_FIELD_REF>: Punt if mode
	is BLKmode and bitpos not zero or mode change is needed.

2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>

	PR target/83675
	* config/sparc/sparc.c (sparc_vectorize_vec_perm_const): Require
	TARGET_VIS2.

2018-01-04  Uros Bizjak  <ubizjak@gmail.com>

	PR target/83628
	* config/alpha/alpha.md (*sadd<modesuffix>): Use ASHIFT
	instead of MULT rtx.  Update all corresponding splitters.
	(*saddl_se): Ditto.
	(*ssub<modesuffix>): Ditto.
	(*ssubl_se): Ditto.
	(*cmp_sadd_di): Update split patterns.
	(*cmp_sadd_si): Ditto.
	(*cmp_sadd_sidi): Ditto.
	(*cmp_ssub_di): Ditto.
	(*cmp_ssub_si): Ditto.
	(*cmp_ssub_sidi): Ditto.
	* config/alpha/predicates.md (const23_operand): New predicate.
	* config/alpha/alpha.c (alpha_rtx_costs) [PLUS, MINUS]:
	Look for ASHIFT, not MULT inner operand.
	(alpha_split_conditional_move): Update for *sadd<modesuffix> change.

2018-01-04  Martin Liska  <mliska@suse.cz>

	PR gcov-profile/83669
	* gcov.c (output_intermediate_file): Add version to intermediate
	gcov file.
	* doc/gcov.texi: Document new field 'version' in intermediate
	file format. Fix location of '-k' option of gcov command.

2018-01-04  Martin Liska  <mliska@suse.cz>

	PR ipa/82352
	* ipa-icf.c (sem_function::merge): Do not cross comdat boundary.

2018-01-04  Jakub Jelinek  <jakub@redhat.com>

	* gimple-ssa-sprintf.c (parse_directive): Cast second dir.len to uhwi.

2018-01-03  Martin Sebor  <msebor@redhat.com>

	PR tree-optimization/83655
	* gimple-ssa-warn-restrict.c (wrestrict_dom_walker::check_call): Avoid
	checking calls with invalid arguments.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vect-stmts.c (vect_get_store_rhs): New function.
	(vectorizable_mask_load_store): Delete.
	(vectorizable_call): Return false for masked loads and stores.
	(vectorizable_store): Handle IFN_MASK_STORE.  Use vect_get_store_rhs
	instead of gimple_assign_rhs1.
	(vectorizable_load): Handle IFN_MASK_LOAD.
	(vect_transform_stmt): Don't set is_store for call_vec_info_type.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vect-stmts.c (vect_build_gather_load_calls): New function,
	split out from..,
	(vectorizable_mask_load_store): ...here.
	(vectorizable_load): ...and here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vect-stmts.c (vect_build_all_ones_mask)
	(vect_build_zero_merge_argument): New functions, split out from...
	(vectorizable_load): ...here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vect-stmts.c (vect_check_store_rhs): New function,
	split out from...
	(vectorizable_mask_load_store): ...here.
	(vectorizable_store): ...and here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vect-stmts.c (vect_check_load_store_mask): New function,
	split out from...
	(vectorizable_mask_load_store): ...here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vectorizer.h (vec_load_store_type): Moved from tree-vec-stmts.c
	(vect_model_store_cost): Take a vec_load_store_type instead of a
	vect_def_type.
	* tree-vect-stmts.c (vec_load_store_type): Move to tree-vectorizer.h.
	(vect_model_store_cost): Take a vec_load_store_type instead of a
	vect_def_type.
	(vectorizable_mask_load_store): Update accordingly.
	(vectorizable_store): Likewise.
	* tree-vect-slp.c (vect_analyze_slp_cost_1): Update accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vect-loop.c (vect_transform_loop): Stub out scalar
	IFN_MASK_LOAD calls here rather than...
	* tree-vect-stmts.c (vectorizable_mask_load_store): ...here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* expmed.c (extract_bit_field_1): For vector extracts,
	fall back to extract_bit_field_as_subreg if vec_extract
	isn't available.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* lra-spills.c (pseudo_reg_slot_compare): Sort slots by whether
	they are variable or constant sized.
	(assign_stack_slot_num_and_sort_pseudos): Don't reuse variable-sized
	slots for constant-sized data.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-patterns.c (vect_recog_mask_conversion_pattern): When
	handling COND_EXPRs with boolean comparisons, try to find a better
	basis for the mask type than the boolean itself.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* doc/rtl.texi (MAX_BITSIZE_MODE_ANY_MODE): Describe how the default
	is calculated and how it can be overridden.
	* genmodes.c (max_bitsize_mode_any_mode): New variable.
	(create_modes): Initialize it from MAX_BITSIZE_MODE_ANY_MODE,
	if defined.
	(emit_max_int): Use it to set the output MAX_BITSIZE_MODE_ANY_MODE,
	if nonzero.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* config/aarch64/aarch64-protos.h (aarch64_output_simd_mov_immediate):
	Remove the mode argument.
	(aarch64_simd_valid_immediate): Remove the mode and inverse
	arguments.
	* config/aarch64/iterators.md (bitsize): New iterator.
	* config/aarch64/aarch64-simd.md (*aarch64_simd_mov<mode>, and<mode>3)
	(ior<mode>3): Update calls to aarch64_output_simd_mov_immediate.
	* config/aarch64/constraints.md (Do, Db, Dn): Update calls to
	aarch64_simd_valid_immediate.
	* config/aarch64/predicates.md (aarch64_reg_or_orr_imm): Likewise.
	(aarch64_reg_or_bic_imm): Likewise.
	* config/aarch64/aarch64.c (simd_immediate_info): Replace mvn
	with an insn_type enum and msl with a modifier_type enum.
	Replace element_width with a scalar_mode.  Change the shift
	to unsigned int.  Add constructors for scalar_float_mode and
	scalar_int_mode elements.
	(aarch64_vect_float_const_representable_p): Delete.
	(aarch64_can_const_movi_rtx_p)
	(aarch64_simd_scalar_immediate_valid_for_move)
	(aarch64_simd_make_constant): Update call to
	aarch64_simd_valid_immediate.
	(aarch64_advsimd_valid_immediate_hs): New function.
	(aarch64_advsimd_valid_immediate): Likewise.
	(aarch64_simd_valid_immediate): Remove mode and inverse
	arguments.  Rewrite to use the above.  Use const_vec_duplicate_p
	to detect duplicated constants and use aarch64_float_const_zero_rtx_p
	and aarch64_float_const_representable_p on the result.
	(aarch64_output_simd_mov_immediate): Remove mode argument.
	Update call to aarch64_simd_valid_immediate and use of
	simd_immediate_info.
	(aarch64_output_scalar_simd_mov_immediate): Update call
	accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* machmode.h (mode_precision): Prefix with CONST_MODE_PRECISION.
	(mode_nunits): Likewise CONST_MODE_NUNITS.
	* machmode.def (ADJUST_NUNITS): Document.
	* genmodes.c (mode_data::need_nunits_adj): New field.
	(blank_mode): Update accordingly.
	(adj_nunits): New variable.
	(print_maybe_const_decl): Replace CATEGORY with a NEEDS_ADJ
	parameter.
	(emit_mode_size_inline): Set need_bytesize_adj for all modes
	listed in adj_nunits.
	(emit_mode_nunits_inline): Set need_nunits_adj for all modes
	listed in adj_nunits.  Don't emit case statements for such modes.
	(emit_insn_modes_h): Emit definitions of CONST_MODE_NUNITS
	and CONST_MODE_PRECISION.  Make CONST_MODE_SIZE expand to
	nothing if adj_nunits is nonnull.
	(emit_mode_precision, emit_mode_nunits): Use print_maybe_const_decl.
	(emit_mode_unit_size, emit_mode_base_align, emit_mode_ibit)
	(emit_mode_fbit): Update use of print_maybe_const_decl.
	(emit_move_size): Likewise.  Treat the array as non-const
	if adj_nunits.
	(emit_mode_adjustments): Handle adj_nunits.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* machmode.def (VECTOR_MODES_WITH_PREFIX): Document.
	* genmodes.c (VECTOR_MODES_WITH_PREFIX): New macro.
	(VECTOR_MODES): Use it.
	(make_vector_modes): Take the prefix as an argument.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* mode-classes.def (MODE_VECTOR_BOOL): New mode class.
	* machmode.h (INTEGRAL_MODE_P, VECTOR_MODE_P): Return true
	for MODE_VECTOR_BOOL.
	* machmode.def (VECTOR_BOOL_MODE): Document.
	* genmodes.c (VECTOR_BOOL_MODE): New macro.
	(make_vector_bool_mode): New function.
	(complete_mode, emit_mode_wider, emit_mode_adjustments): Handle
	MODE_VECTOR_BOOL.
	* lto-streamer-in.c (lto_input_mode_table): Likewise.
	* rtx-vector-builder.c (rtx_vector_builder::find_cached_value):
	Likewise.
	* stor-layout.c (int_mode_for_mode): Likewise.
	* tree.c (build_vector_type_for_mode): Likewise.
	* varasm.c (output_constant_pool_2): Likewise.
	* emit-rtl.c (init_emit_once): Make sure that CONST1_RTX (BImode) and
	CONSTM1_RTX (BImode) are the same thing.  Initialize const_tiny_rtx
	for MODE_VECTOR_BOOL.
	* expr.c (expand_expr_real_1): Use VECTOR_MODE_P instead of a list
	of mode class checks.
	* tree-vect-generic.c (expand_vector_operation): Use VECTOR_MODE_P
	instead of a list of mode class checks.
	(expand_vector_scalar_condition): Likewise.
	(type_for_widest_vector_mode): Handle BImode as an inner mode.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* machmode.h (mode_size): Change from unsigned short to
	poly_uint16_pod.
	(mode_to_bytes): Return a poly_uint16 rather than an unsigned short.
	(GET_MODE_SIZE): Return a constant if ONLY_FIXED_SIZE_MODES,
	or if measurement_type is not polynomial.
	(fixed_size_mode::includes_p): Check for constant-sized modes.
	* genmodes.c (emit_mode_size_inline): Make mode_size_inline
	return a poly_uint16 rather than an unsigned short.
	(emit_mode_size): Change the type of mode_size from unsigned short
	to poly_uint16_pod.  Use ZERO_COEFFS for the initializer.
	(emit_mode_adjustments): Cope with polynomial vector sizes.
	* lto-streamer-in.c (lto_input_mode_table): Use bp_unpack_poly_value
	for GET_MODE_SIZE.
	* lto-streamer-out.c (lto_write_mode_table): Use bp_pack_poly_value
	for GET_MODE_SIZE.
	* auto-inc-dec.c (try_merge): Treat GET_MODE_SIZE as polynomial.
	* builtins.c (expand_ifn_atomic_compare_exchange_into_call): Likewise.
	* caller-save.c (setup_save_areas): Likewise.
	(replace_reg_with_saved_mem): Likewise.
	* calls.c (emit_library_call_value_1): Likewise.
	* combine-stack-adj.c (combine_stack_adjustments_for_block): Likewise.
	* combine.c (simplify_set, make_extraction, simplify_shift_const_1)
	(gen_lowpart_for_combine): Likewise.
	* convert.c (convert_to_integer_1): Likewise.
	* cse.c (equiv_constant, cse_insn): Likewise.
	* cselib.c (autoinc_split, cselib_hash_rtx): Likewise.
	(cselib_subst_to_values): Likewise.
	* dce.c (word_dce_process_block): Likewise.
	* df-problems.c (df_word_lr_mark_ref): Likewise.
	* dwarf2cfi.c (init_one_dwarf_reg_size): Likewise.
	* dwarf2out.c (multiple_reg_loc_descriptor, mem_loc_descriptor)
	(concat_loc_descriptor, concatn_loc_descriptor, loc_descriptor)
	(rtl_for_decl_location): Likewise.
	* emit-rtl.c (gen_highpart, widen_memory_access): Likewise.
	* expmed.c (extract_bit_field_1, extract_integral_bit_field): Likewise.
	* expr.c (emit_group_load_1, clear_storage_hints): Likewise.
	(emit_move_complex, emit_move_multi_word, emit_push_insn): Likewise.
	(expand_expr_real_1): Likewise.
	* function.c (assign_parm_setup_block_p, assign_parm_setup_block)
	(pad_below): Likewise.
	* gimple-fold.c (optimize_atomic_compare_exchange_p): Likewise.
	* gimple-ssa-store-merging.c (rhs_valid_for_store_merging_p): Likewise.
	* ira.c (get_subreg_tracking_sizes): Likewise.
	* ira-build.c (ira_create_allocno_objects): Likewise.
	* ira-color.c (coalesced_pseudo_reg_slot_compare): Likewise.
	(ira_sort_regnos_for_alter_reg): Likewise.
	* ira-costs.c (record_operand_costs): Likewise.
	* lower-subreg.c (interesting_mode_p, simplify_gen_subreg_concatn)
	(resolve_simple_move): Likewise.
	* lra-constraints.c (get_reload_reg, operands_match_p): Likewise.
	(process_addr_reg, simplify_operand_subreg, curr_insn_transform)
	(lra_constraints): Likewise.
	(CONST_POOL_OK_P): Reject variable-sized modes.
	* lra-spills.c (slot, assign_mem_slot, pseudo_reg_slot_compare)
	(add_pseudo_to_slot, lra_spill): Likewise.
	* omp-low.c (omp_clause_aligned_alignment): Likewise.
	* optabs-query.c (get_best_extraction_insn): Likewise.
	* optabs-tree.c (expand_vec_cond_expr_p): Likewise.
	* optabs.c (expand_vec_perm_var, expand_vec_cond_expr): Likewise.
	(expand_mult_highpart, valid_multiword_target_p): Likewise.
	* recog.c (offsettable_address_addr_space_p): Likewise.
	* regcprop.c (maybe_mode_change): Likewise.
	* reginfo.c (choose_hard_reg_mode, record_subregs_of_mode): Likewise.
	* regrename.c (build_def_use): Likewise.
	* regstat.c (dump_reg_info): Likewise.
	* reload.c (complex_word_subreg_p, push_reload, find_dummy_reload)
	(find_reloads, find_reloads_subreg_address): Likewise.
	* reload1.c (eliminate_regs_1): Likewise.
	* rtlanal.c (for_each_inc_dec_find_inc_dec, rtx_cost): Likewise.
	* simplify-rtx.c (avoid_constant_pool_reference): Likewise.
	(simplify_binary_operation_1, simplify_subreg): Likewise.
	* targhooks.c (default_function_arg_padding): Likewise.
	(default_hard_regno_nregs, default_class_max_nregs): Likewise.
	* tree-cfg.c (verify_gimple_assign_binary): Likewise.
	(verify_gimple_assign_ternary): Likewise.
	* tree-inline.c (estimate_move_cost): Likewise.
	* tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
	* tree-ssa-loop-ivopts.c (add_autoinc_candidates): Likewise.
	(get_address_cost_ainc): Likewise.
	* tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Likewise.
	(vect_supportable_dr_alignment): Likewise.
	* tree-vect-loop.c (vect_determine_vectorization_factor): Likewise.
	(vectorizable_reduction): Likewise.
	* tree-vect-stmts.c (vectorizable_assignment, vectorizable_shift)
	(vectorizable_operation, vectorizable_load): Likewise.
	* tree.c (build_same_sized_truth_vector_type): Likewise.
	* valtrack.c (cleanup_auto_inc_dec): Likewise.
	* var-tracking.c (emit_note_insn_var_location): Likewise.
	* config/arc/arc.h (ASM_OUTPUT_CASE_END): Use as_a <scalar_int_mode>.
	(ADDR_VEC_ALIGN): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* machmode.h (mode_to_bits): Return a poly_uint16 rather than an
	unsigned short.
	(GET_MODE_BITSIZE): Return a constant if ONLY_FIXED_SIZE_MODES,
	or if measurement_type is polynomial.
	* calls.c (shift_return_value): Treat GET_MODE_BITSIZE as polynomial.
	* combine.c (make_extraction): Likewise.
	* dse.c (find_shift_sequence): Likewise.
	* dwarf2out.c (mem_loc_descriptor): Likewise.
	* expmed.c (store_integral_bit_field, extract_bit_field_1): Likewise.
	(extract_bit_field, extract_low_bits): Likewise.
	* expr.c (convert_move, convert_modes, emit_move_insn_1): Likewise.
	(optimize_bitfield_assignment_op, expand_assignment): Likewise.
	(store_expr_with_bounds, store_field, expand_expr_real_1): Likewise.
	* fold-const.c (optimize_bit_field_compare, merge_ranges): Likewise.
	* gimple-fold.c (optimize_atomic_compare_exchange_p): Likewise.
	* reload.c (find_reloads): Likewise.
	* reload1.c (alter_reg): Likewise.
	* stor-layout.c (bitwise_mode_for_mode, compute_record_mode): Likewise.
	* targhooks.c (default_secondary_memory_needed_mode): Likewise.
	* tree-if-conv.c (predicate_mem_writes): Likewise.
	* tree-ssa-strlen.c (handle_builtin_memcmp): Likewise.
	* tree-vect-patterns.c (adjust_bool_pattern): Likewise.
	* tree-vect-stmts.c (vectorizable_simd_clone_call): Likewise.
	* valtrack.c (dead_debug_insert_temp): Likewise.
	* varasm.c (mergeable_constant_section): Likewise.
	* config/sh/sh.h (LOCAL_ALIGNMENT): Use as_a <fixed_size_mode>.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* expr.c (expand_assignment): Cope with polynomial mode sizes
	when assigning to a CONCAT.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* machmode.h (mode_precision): Change from unsigned short to
	poly_uint16_pod.
	(mode_to_precision): Return a poly_uint16 rather than an unsigned
	short.
	(GET_MODE_PRECISION): Return a constant if ONLY_FIXED_SIZE_MODES,
	or if measurement_type is not polynomial.
	(HWI_COMPUTABLE_MODE_P): Turn into a function.  Optimize the case
	in which the mode is already known to be a scalar_int_mode.
	* genmodes.c (emit_mode_precision): Change the type of mode_precision
	from unsigned short to poly_uint16_pod.  Use ZERO_COEFFS for the
	initializer.
	* lto-streamer-in.c (lto_input_mode_table): Use bp_unpack_poly_value
	for GET_MODE_PRECISION.
	* lto-streamer-out.c (lto_write_mode_table): Use bp_pack_poly_value
	for GET_MODE_PRECISION.
	* combine.c (update_rsp_from_reg_equal): Treat GET_MODE_PRECISION
	as polynomial.
	(try_combine, find_split_point, combine_simplify_rtx): Likewise.
	(expand_field_assignment, make_extraction): Likewise.
	(make_compound_operation_int, record_dead_and_set_regs_1): Likewise.
	(get_last_value): Likewise.
	* convert.c (convert_to_integer_1): Likewise.
	* cse.c (cse_insn): Likewise.
	* expr.c (expand_expr_real_1): Likewise.
	* lra-constraints.c (simplify_operand_subreg): Likewise.
	* optabs-query.c (can_atomic_load_p): Likewise.
	* optabs.c (expand_atomic_load): Likewise.
	(expand_atomic_store): Likewise.
	* ree.c (combine_reaching_defs): Likewise.
	* rtl.h (partial_subreg_p, paradoxical_subreg_p): Likewise.
	* rtlanal.c (nonzero_bits1, lsb_bitfield_op_p): Likewise.
	* tree.h (type_has_mode_precision_p): Likewise.
	* ubsan.c (instrument_si_overflow): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree.h (TYPE_VECTOR_SUBPARTS): Turn into a function and handle
	polynomial numbers of units.
	(SET_TYPE_VECTOR_SUBPARTS): Likewise.
	(valid_vector_subparts_p): New function.
	(build_vector_type): Remove temporary shim and take the number
	of units as a poly_uint64 rather than an int.
	(build_opaque_vector_type): Take the number of units as a
	poly_uint64 rather than an int.
	* tree.c (build_vector_from_ctor): Handle polynomial
	TYPE_VECTOR_SUBPARTS.
	(type_hash_canon_hash, type_cache_hasher::equal): Likewise.
	(uniform_vector_p, vector_type_mode, build_vector): Likewise.
	(build_vector_from_val): If the number of units is variable,
	use build_vec_duplicate_cst for constant operands and
	VEC_DUPLICATE_EXPR otherwise.
	(make_vector_type): Remove temporary is_constant ().
	(build_vector_type, build_opaque_vector_type): Take the number of
	units as a poly_uint64 rather than an int.
	(check_vector_cst): Handle polynomial TYPE_VECTOR_SUBPARTS and
	VECTOR_CST_NELTS.
	* cfgexpand.c (expand_debug_expr): Likewise.
	* expr.c (count_type_elements, categorize_ctor_elements_1): Likewise.
	(store_constructor, expand_expr_real_1): Likewise.
	(const_scalar_mask_from_tree): Likewise.
	* fold-const-call.c (fold_const_reduction): Likewise.
	* fold-const.c (const_binop, const_unop, fold_convert_const): Likewise.
	(operand_equal_p, fold_vec_perm, fold_ternary_loc): Likewise.
	(native_encode_vector, vec_cst_ctor_to_array): Likewise.
	(fold_relational_const): Likewise.
	(native_interpret_vector): Likewise.  Change the size from an
	int to an unsigned int.
	* gimple-fold.c (gimple_fold_stmt_to_constant_1): Handle polynomial
	TYPE_VECTOR_SUBPARTS.
	(gimple_fold_indirect_ref, gimple_build_vector): Likewise.
	(gimple_build_vector_from_val): Use VEC_DUPLICATE_EXPR when
	duplicating a non-constant operand into a variable-length vector.
	* hsa-brig.c (hsa_op_immed::emit_to_buffer): Handle polynomial
	TYPE_VECTOR_SUBPARTS and VECTOR_CST_NELTS.
	* ipa-icf.c (sem_variable::equals): Likewise.
	* match.pd: Likewise.
	* omp-simd-clone.c (simd_clone_subparts): Likewise.
	* print-tree.c (print_node): Likewise.
	* stor-layout.c (layout_type): Likewise.
	* targhooks.c (default_builtin_vectorization_cost): Likewise.
	* tree-cfg.c (verify_gimple_comparison): Likewise.
	(verify_gimple_assign_binary): Likewise.
	(verify_gimple_assign_ternary): Likewise.
	(verify_gimple_assign_single): Likewise.
	* tree-pretty-print.c (dump_generic_node): Likewise.
	* tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
	(simplify_bitfield_ref, is_combined_permutation_identity): Likewise.
	* tree-vect-data-refs.c (vect_permute_store_chain): Likewise.
	(vect_grouped_load_supported, vect_permute_load_chain): Likewise.
	(vect_shift_permute_load_chain): Likewise.
	* tree-vect-generic.c (nunits_for_known_piecewise_op): Likewise.
	(expand_vector_condition, optimize_vector_constructor): Likewise.
	(lower_vec_perm, get_compute_type): Likewise.
	* tree-vect-loop.c (vect_determine_vectorization_factor): Likewise.
	(get_initial_defs_for_reduction, vect_transform_loop): Likewise.
	* tree-vect-patterns.c (vect_recog_bool_pattern): Likewise.
	(vect_recog_mask_conversion_pattern): Likewise.
	* tree-vect-slp.c (vect_supported_load_permutation_p): Likewise.
	(vect_get_constant_vectors, vect_transform_slp_perm_load): Likewise.
	* tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
	(get_group_load_store_type, vectorizable_mask_load_store): Likewise.
	(vectorizable_bswap, simd_clone_subparts, vectorizable_assignment)
	(vectorizable_shift, vectorizable_operation, vectorizable_store)
	(vectorizable_load, vect_is_simple_cond, vectorizable_comparison)
	(supportable_widening_operation): Likewise.
	(supportable_narrowing_operation): Likewise.
	* tree-vector-builder.c (tree_vector_builder::binary_encoded_nelts):
	Likewise.
	* varasm.c (output_constant): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-data-refs.c (vect_permute_store_chain): Reorganize
	so that both the length == 3 and length != 3 cases set up their
	own permute vectors.  Add comments explaining why we know the
	number of elements is constant.
	(vect_permute_load_chain): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* machmode.h (mode_nunits): Change from unsigned char to
	poly_uint16_pod.
	(ONLY_FIXED_SIZE_MODES): New macro.
	(pod_mode::measurement_type, scalar_int_mode::measurement_type)
	(scalar_float_mode::measurement_type, scalar_mode::measurement_type)
	(complex_mode::measurement_type, fixed_size_mode::measurement_type):
	New typedefs.
	(mode_to_nunits): Return a poly_uint16 rather than an unsigned short.
	(GET_MODE_NUNITS): Return a constant if ONLY_FIXED_SIZE_MODES,
	or if measurement_type is not polynomial.
	* genmodes.c (ZERO_COEFFS): New macro.
	(emit_mode_nunits_inline): Make mode_nunits_inline return a
	poly_uint16.
	(emit_mode_nunits): Change the type of mode_nunits to poly_uint16_pod.
	Use ZERO_COEFFS when emitting initializers.
	* data-streamer.h (bp_pack_poly_value): New function.
	(bp_unpack_poly_value): Likewise.
	* lto-streamer-in.c (lto_input_mode_table): Use bp_unpack_poly_value
	for GET_MODE_NUNITS.
	* lto-streamer-out.c (lto_write_mode_table): Use bp_pack_poly_value
	for GET_MODE_NUNITS.
	* tree.c (make_vector_type): Remove temporary shim and make
	the real function take the number of units as a poly_uint64
	rather than an int.
	(build_vector_type_for_mode): Handle polynomial nunits.
	* dwarf2out.c (loc_descriptor, add_const_value_attribute): Likewise.
	* emit-rtl.c (const_vec_series_p_1): Likewise.
	(gen_rtx_CONST_VECTOR): Likewise.
	* fold-const.c (test_vec_duplicate_folding): Likewise.
	* genrecog.c (validate_pattern): Likewise.
	* optabs-query.c (can_vec_perm_var_p, can_mult_highpart_p): Likewise.
	* optabs-tree.c (expand_vec_cond_expr_p): Likewise.
	* optabs.c (expand_vector_broadcast, expand_binop_directly): Likewise.
	(shift_amt_for_vec_perm_mask, expand_vec_perm_var): Likewise.
	(expand_vec_cond_expr, expand_mult_highpart): Likewise.
	* rtlanal.c (subreg_get_info): Likewise.
	* tree-vect-data-refs.c (vect_grouped_store_supported): Likewise.
	(vect_grouped_load_supported): Likewise.
	* tree-vect-generic.c (type_for_widest_vector_mode): Likewise.
	* tree-vect-loop.c (have_whole_vector_shift): Likewise.
	* simplify-rtx.c (simplify_unary_operation_1): Likewise.
	(simplify_const_unary_operation, simplify_binary_operation_1)
	(simplify_const_binary_operation, simplify_ternary_operation)
	(test_vector_ops_duplicate, test_vector_ops): Likewise.
	(simplify_immed_subreg): Use GET_MODE_NUNITS on a fixed_size_mode
	instead of CONST_VECTOR_NUNITS.
	* varasm.c (output_constant_pool_2): Likewise.
	* rtx-vector-builder.c (rtx_vector_builder::build): Only include the
	explicit-encoded elements in the XVEC for variable-length vectors.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* lra-constraints.c (curr_insn_transform): Use partial_subreg_p.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* coretypes.h (fixed_size_mode): Declare.
	(fixed_size_mode_pod): New typedef.
	* builtins.h (target_builtins::x_apply_args_mode)
	(target_builtins::x_apply_result_mode): Change type to
	fixed_size_mode_pod.
	* builtins.c (apply_args_size, apply_result_size, result_vector)
	(expand_builtin_apply_args_1, expand_builtin_apply)
	(expand_builtin_return): Update accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* cse.c (hash_rtx_cb): Hash only the encoded elements.
	* cselib.c (cselib_hash_rtx): Likewise.
	* expmed.c (make_tree): Build VECTOR_CSTs directly from the
	CONST_VECTOR encoding.

2017-01-03  Jakub Jelinek  <jakub@redhat.com>
	    Jeff Law  <law@redhat.com>

	PR target/83641
	* config/i386/i386.c (ix86_adjust_stack_and_probe_stack_clash): For
	noreturn probe, use gen_pop instead of ix86_emit_restore_reg_using_pop,
	only set RTX_FRAME_RELATED_P on both the push and pop if cfa_reg is sp
	and add REG_CFA_ADJUST_CFA notes in that case to both insns.

	PR target/83641
	* config/i386/i386.c (ix86_adjust_stack_and_probe_stack_clash): Do not
	explicitly probe *sp in a noreturn function if there were any callee
	register saves or frame pointer is needed.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

	PR debug/83621
	* cfgexpand.c (expand_debug_expr): Return NULL if mode is
	BLKmode for ternary, binary or unary expressions.

	PR debug/83645
	* var-tracking.c (delete_vta_debug_insn): New inline function.
	(delete_vta_debug_insns): Add USE_CFG argument, if true, walk just
	insns from get_insns () to NULL instead of each bb separately.
	Use delete_vta_debug_insn.  No longer static.
	(vt_debug_insns_local, variable_tracking_main_1): Adjust
	delete_vta_debug_insns callers.
	* rtl.h (delete_vta_debug_insns): Declare.
	* final.c (rest_of_handle_final): Call delete_vta_debug_insns
	instead of variable_tracking_main.

2018-01-03  Martin Sebor  <msebor@redhat.com>

	PR tree-optimization/83603
	* calls.c (maybe_warn_nonstring_arg): Avoid accessing function
	arguments past the endof the argument list in functions declared
	without a prototype.
	* gimple-ssa-warn-restrict.c (wrestrict_dom_walker::check_call):
	Avoid checking when arguments are null.

2018-01-03  Martin Sebor  <msebor@redhat.com>

	PR c/83559
	* doc/extend.texi (attribute const): Fix a typo.
	* ipa-pure-const.c ((warn_function_const, warn_function_pure): Avoid
	issuing -Wsuggest-attribute for void functions.

2018-01-03  Martin Sebor  <msebor@redhat.com>

	* gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): Use
	offset_int::from instead of wide_int::to_shwi.
	(maybe_diag_overlap): Remove assertion.
	Use HOST_WIDE_INT_PRINT_DEC instead of %lli.
	* gimple-ssa-sprintf.c (format_directive): Same.
	(parse_directive): Same.
	(sprintf_dom_walker::compute_format_length): Same.
	(try_substitute_return_value): Same.

2017-01-03  Jeff Law  <law@redhat.com>

	PR middle-end/83654
	* explow.c (anti_adjust_stack_and_probe_stack_clash): Test a
	non-constant residual for zero at runtime and avoid probing in
	that case.  Reorganize code for trailing problem to mirror handling
	of the residual.

2018-01-03  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	PR tree-optimization/83501
	* tree-ssa-strlen.c (get_string_cst): New.
	(handle_char_store): Call get_string_cst.

2018-01-03  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/83593
	* tree-ssa-strlen.c: Include tree-cfg.h.
	(strlen_check_and_optimize_stmt): Add new argument cleanup_eh.
	(strlen_dom_walker): Add new member variable m_cleanup_cfg.
	(strlen_dom_walker::strlen_dom_walker): Initialize m_cleanup_cfg
	to false.
	(strlen_dom_walker::before_dom_children): Call
	gimple_purge_dead_eh_edges. Dump tranformation with details
	dump flags.
	(strlen_dom_walker::before_dom_children): Update call by adding
	new argument cleanup_eh.
	(pass_strlen::execute): Return TODO_cleanup_cfg if needed.

2018-01-03  Martin Liska  <mliska@suse.cz>

	PR ipa/83549
	* cif-code.def (VARIADIC_THUNK): New enum value.
	* ipa-fnsummary.c (compute_fn_summary): Do not inline variadic
	thunks.

2018-01-03  Jan Beulich  <jbeulich@suse.com>

	* sse.md (mov<mode>_internal): Tighten condition for when to use
	vmovdqu<ssescalarsize> for TI and OI modes.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

	Update copyright years.

2018-01-03  Martin Liska  <mliska@suse.cz>

	PR ipa/83594
	* ipa-visibility.c (function_and_variable_visibility): Skip
	functions with noipa attribure.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

	* gcc.c (process_command): Update copyright notice dates.
	* gcov-dump.c (print_version): Ditto.
	* gcov.c (print_version): Ditto.
	* gcov-tool.c (print_version): Ditto.
	* gengtype.c (create_file): Ditto.
	* doc/cpp.texi: Bump @copying's copyright year.
	* doc/cppinternals.texi: Ditto.
	* doc/gcc.texi: Ditto.
	* doc/gccint.texi: Ditto.
	* doc/gcov.texi: Ditto.
	* doc/install.texi: Ditto.
	* doc/invoke.texi: Ditto.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* vector-builder.h (vector_builder::m_full_nelts): Change from
	unsigned int to poly_uint64.
	(vector_builder::full_nelts): Update prototype accordingly.
	(vector_builder::new_vector): Likewise.
	(vector_builder::encoded_full_vector_p): Handle polynomial full_nelts.
	(vector_builder::operator ==): Likewise.
	(vector_builder::finalize): Likewise.
	* int-vector-builder.h (int_vector_builder::int_vector_builder):
	Take the number of elements as a poly_uint64 rather than an
	unsigned int.
	* vec-perm-indices.h (vec_perm_indices::m_nelts_per_input): Change
	from unsigned int to poly_uint64.
	(vec_perm_indices::vec_perm_indices): Update prototype accordingly.
	(vec_perm_indices::new_vector): Likewise.
	(vec_perm_indices::length): Likewise.
	(vec_perm_indices::nelts_per_input): Likewise.
	(vec_perm_indices::input_nelts): Likewise.
	* vec-perm-indices.c (vec_perm_indices::new_vector): Take the
	number of elements per input as a poly_uint64 rather than an
	unsigned int.  Use the original encoding for variable-length
	vectors, rather than clamping each individual element.
	For the second and subsequent elements in each pattern,
	clamp the step and base before clamping their sum.
	(vec_perm_indices::series_p): Handle polynomial element counts.
	(vec_perm_indices::all_in_range_p): Likewise.
	(vec_perm_indices_to_tree): Likewise.
	(vec_perm_indices_to_rtx): Likewise.
	* tree-vect-stmts.c (vect_gen_perm_mask_any): Likewise.
	* tree-vector-builder.c (tree_vector_builder::new_unary_operation)
	(tree_vector_builder::new_binary_operation): Handle polynomial
	element counts.  Return false if we need to know the number
	of elements at compile time.
	* fold-const.c (fold_vec_perm): Punt if the number of elements
	isn't known at compile time.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* vec-perm-indices.h (vec_perm_builder): Change element type
	from HOST_WIDE_INT to poly_int64.
	(vec_perm_indices::element_type): Update accordingly.
	(vec_perm_indices::clamp): Handle polynomial element_types.
	* vec-perm-indices.c (vec_perm_indices::series_p): Likewise.
	(vec_perm_indices::all_in_range_p): Likewise.
	(tree_to_vec_perm_builder): Check for poly_int64 trees rather
	than shwi trees.
	* vector-builder.h (vector_builder::stepped_sequence_p): Handle
	polynomial vec_perm_indices element types.
	* int-vector-builder.h (int_vector_builder::equal_p): Likewise.
	* fold-const.c (fold_vec_perm): Likewise.
	* optabs.c (shift_amt_for_vec_perm_mask): Likewise.
	* tree-vect-generic.c (lower_vec_perm): Likewise.
	* tree-vect-slp.c (vect_transform_slp_perm_load): Likewise.
	* config/aarch64/aarch64.c (aarch64_evpc_tbl): Cast d->perm
	element type to HOST_WIDE_INT.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* alias.c (addr_side_effect_eval): Take the size as a poly_int64
	rather than an int.  Use plus_constant.
	(memrefs_conflict_p): Take the sizes as poly_int64s rather than ints.
	Take the offset "c" as a poly_int64 rather than a HOST_WIDE_INT.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* calls.c (emit_call_1, expand_call): Change struct_value_size from
	a HOST_WIDE_INT to a poly_int64.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* calls.c (load_register_parameters): Cope with polynomial
	mode sizes.  Require a constant size for BLKmode parameters
	that aren't described by a PARALLEL.  If BLOCK_REG_PADDING
	forces a parameter to be padded at the lsb end in order to
	fill a complete number of words, require the parameter size
	to be ordered wrt UNITS_PER_WORD.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* reload1.c (spill_stack_slot_width): Change element type
	from unsigned int to poly_uint64_pod.
	(alter_reg): Treat mode sizes as polynomial.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* reload.c (complex_word_subreg_p): New function.
	(reload_inner_reg_of_subreg, push_reload): Use it.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* lra-constraints.c (process_alt_operands): Reject matched
	operands whose sizes aren't ordered.
	(match_reload): Refer to this check here.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* builtins.c (expand_ifn_atomic_compare_exchange_into_call): Assert
	that the mode size is in the set {1, 2, 4, 8, 16}.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* var-tracking.c (adjust_mems): Treat mode sizes as polynomial.
	Use plus_constant instead of gen_rtx_PLUS.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* config/cr16/cr16-protos.h (cr16_push_rounding): Declare.
	* config/cr16/cr16.h (PUSH_ROUNDING): Move implementation to...
	* config/cr16/cr16.c (cr16_push_rounding): ...this new function.
	* config/h8300/h8300-protos.h (h8300_push_rounding): Declare.
	* config/h8300/h8300.h (PUSH_ROUNDING): Move implementation to...
	* config/h8300/h8300.c (h8300_push_rounding): ...this new function.
	* config/i386/i386-protos.h (ix86_push_rounding): Declare.
	* config/i386/i386.h (PUSH_ROUNDING): Move implementation to...
	* config/i386/i386.c (ix86_push_rounding): ...this new function.
	* config/m32c/m32c-protos.h (m32c_push_rounding): Take and return
	a poly_int64.
	* config/m32c/m32c.c (m32c_push_rounding): Likewise.
	* config/m68k/m68k-protos.h (m68k_push_rounding): Declare.
	* config/m68k/m68k.h (PUSH_ROUNDING): Move implementation to...
	* config/m68k/m68k.c (m68k_push_rounding): ...this new function.
	* config/pdp11/pdp11-protos.h (pdp11_push_rounding): Declare.
	* config/pdp11/pdp11.h (PUSH_ROUNDING): Move implementation to...
	* config/pdp11/pdp11.c (pdp11_push_rounding): ...this new function.
	* config/stormy16/stormy16-protos.h (xstormy16_push_rounding): Declare.
	* config/stormy16/stormy16.h (PUSH_ROUNDING): Move implementation to...
	* config/stormy16/stormy16.c (xstormy16_push_rounding): ...this new
	function.
	* expr.c (emit_move_resolve_push): Treat the input and result
	of PUSH_ROUNDING as a poly_int64.
	(emit_move_complex_push, emit_single_push_insn_1): Likewise.
	(emit_push_insn): Likewise.
	* lra-eliminations.c (mark_not_eliminable): Likewise.
	* recog.c (push_operand): Likewise.
	* reload1.c (elimination_effects): Likewise.
	* rtlanal.c (nonzero_bits1): Likewise.
	* calls.c (store_one_arg): Likewise.  Require the padding to be
	known at compile time.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* expr.c (emit_single_push_insn_1): Treat mode sizes as polynomial.
	Use plus_constant instead of gen_rtx_PLUS.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* auto-inc-dec.c (set_inc_state): Take the mode size as a poly_int64
	rather than an int.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* expr.c (expand_expr_real_1): Use tree_to_poly_uint64
	instead of int_size_in_bytes when handling VIEW_CONVERT_EXPRs
	via stack temporaries.  Treat the mode size as polynomial too.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* expr.c (expand_expr_real_2): When handling conversions involving
	unions, apply tree_to_poly_uint64 to the TYPE_SIZE rather than
	multiplying int_size_in_bytes by BITS_PER_UNIT.  Treat GET_MODE_BISIZE
	as a poly_uint64 too.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* rtlanal.c (subreg_get_info): Handle polynomial mode sizes.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* combine.c (can_change_dest_mode): Handle polynomial
	REGMODE_NATURAL_SIZE.
	* expmed.c (store_bit_field_1): Likewise.
	* expr.c (store_constructor): Likewise.
	* emit-rtl.c (validate_subreg): Operate on polynomial mode sizes
	and polynomial REGMODE_NATURAL_SIZE.
	(gen_lowpart_common): Likewise.
	* reginfo.c (record_subregs_of_mode): Likewise.
	* rtlanal.c (read_modify_subreg_p): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* internal-fn.c (expand_vector_ubsan_overflow): Handle polynomial
	numbers of elements.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* match.pd: Cope with polynomial numbers of vector elements.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* fold-const.c (fold_indirect_ref_1): Handle polynomial offsets
	in a POINTER_PLUS_EXPR.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* omp-simd-clone.c (simd_clone_subparts): New function.
	(simd_clone_init_simd_arrays): Use it instead of TYPE_VECTOR_SUBPARTS.
	(ipa_simd_modify_function_body): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-generic.c (nunits_for_known_piecewise_op): New function.
	(expand_vector_piecewise): Use it instead of TYPE_VECTOR_SUBPARTS.
	(expand_vector_addition, add_rshift, expand_vector_divmod): Likewise.
	(expand_vector_condition, vector_element): Likewise.
	(subparts_gt): New function.
	(get_compute_type): Use subparts_gt.
	(count_type_subparts): Delete.
	(expand_vector_operations_1): Use subparts_gt instead of
	count_type_subparts.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-data-refs.c (vect_no_alias_p): Replace with...
	(vect_compile_time_alias): ...this new function.  Do the calculation
	on poly_ints rather than trees.
	(vect_prune_runtime_alias_test_list): Update call accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-slp.c (vect_build_slp_tree_1): Handle polynomial
	numbers of units.
	(vect_schedule_slp_instance): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-slp.c (vect_get_and_check_slp_defs): Reject
	constant and extern definitions for variable-length vectors.
	(vect_get_constant_vectors): Note that the number of units
	is known to be constant.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-stmts.c (vectorizable_conversion): Treat the number
	of units as polynomial.  Choose between WIDE and NARROW based
	on multiple_p.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-stmts.c (simd_clone_subparts): New function.
	(vectorizable_simd_clone_call): Use it instead of TYPE_VECTOR_SUBPARTS.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-stmts.c (vectorizable_call): Treat the number of
	vectors as polynomial.  Use build_index_vector for
	IFN_GOMP_SIMD_LANE.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-stmts.c (get_load_store_type): Treat the number of
	units as polynomial.  Reject VMAT_ELEMENTWISE and VMAT_STRIDED_SLP
	for variable-length vectors.
	(vectorizable_mask_load_store): Treat the number of units as
	polynomial, asserting that it is constant if the condition has
	already been enforced.
	(vectorizable_store, vectorizable_load): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-loop.c (vectorizable_live_operation): Treat the number
	of units as polynomial.  Punt if we can't tell at compile time
	which vector contains the final result.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-loop.c (vectorizable_induction): Treat the number
	of units as polynomial.  Punt on SLP inductions.  Use an integer
	VEC_SERIES_EXPR for variable-length integer reductions.  Use a
	cast of such a series for variable-length floating-point
	reductions.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree.h (build_index_vector): Declare.
	* tree.c (build_index_vector): New function.
	* tree-vect-loop.c (get_initial_defs_for_reduction): Treat the number
	of units as polynomial, forcibly converting it to a constant if
	vectorizable_reduction has already enforced the condition.
	(vect_create_epilog_for_reduction): Likewise.  Use build_index_vector
	to create a {1,2,3,...} vector.
	(vectorizable_reduction): Treat the number of units as polynomial.
	Choose vectype_in based on the largest scalar element size rather
	than the smallest number of units.  Enforce the restrictions
	relied on above.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-data-refs.c (vector_alignment_reachable_p): Treat the
	number of units as polynomial.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* target.h (vector_sizes, auto_vector_sizes): New typedefs.
	* target.def (autovectorize_vector_sizes): Return the vector sizes
	by pointer, using vector_sizes rather than a bitmask.
	* targhooks.h (default_autovectorize_vector_sizes): Update accordingly.
	* targhooks.c (default_autovectorize_vector_sizes): Likewise.
	* config/aarch64/aarch64.c (aarch64_autovectorize_vector_sizes):
	Likewise.
	* config/arc/arc.c (arc_autovectorize_vector_sizes): Likewise.
	* config/arm/arm.c (arm_autovectorize_vector_sizes): Likewise.
	* config/i386/i386.c (ix86_autovectorize_vector_sizes): Likewise.
	* config/mips/mips.c (mips_autovectorize_vector_sizes): Likewise.
	* omp-general.c (omp_max_vf): Likewise.
	* omp-low.c (omp_clause_aligned_alignment): Likewise.
	* optabs-query.c (can_vec_mask_load_store_p): Likewise.
	* tree-vect-loop.c (vect_analyze_loop): Likewise.
	* tree-vect-slp.c (vect_slp_bb): Likewise.
	* doc/tm.texi: Regenerate.
	* tree-vectorizer.h (current_vector_size): Change from an unsigned int
	to a poly_uint64.
	* tree-vect-stmts.c (get_vectype_for_scalar_type_and_size): Take
	the vector size as a poly_uint64 rather than an unsigned int.
	(current_vector_size): Change from an unsigned int to a poly_uint64.
	(get_vectype_for_scalar_type): Update accordingly.
	* tree.h (build_truth_vector_type): Take the size and number of
	units as a poly_uint64 rather than an unsigned int.
	(build_vector_type): Add a temporary overload that takes
	the number of units as a poly_uint64 rather than an unsigned int.
	* tree.c (make_vector_type): Likewise.
	(build_truth_vector_type): Take the number of units as a poly_uint64
	rather than an unsigned int.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* target.def (get_mask_mode): Take the number of units and length
	as poly_uint64s rather than unsigned ints.
	* targhooks.h (default_get_mask_mode): Update accordingly.
	* targhooks.c (default_get_mask_mode): Likewise.
	* config/i386/i386.c (ix86_get_mask_mode): Likewise.
	* doc/tm.texi: Regenerate.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* omp-general.h (omp_max_vf): Return a poly_uint64 instead of an int.
	* omp-general.c (omp_max_vf): Likewise.
	* omp-expand.c (omp_adjust_chunk_size): Update call to omp_max_vf.
	(expand_omp_simd): Handle polynomial safelen.
	* omp-low.c (omplow_simd_context): Add a default constructor.
	(omplow_simd_context::max_vf): Change from int to poly_uint64.
	(lower_rec_simd_input_clauses): Update accordingly.
	(lower_rec_input_clauses): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vectorizer.h (vect_nunits_for_cost): New function.
	* tree-vect-loop.c (vect_model_reduction_cost): Use it.
	* tree-vect-slp.c (vect_analyze_slp_cost_1): Likewise.
	(vect_analyze_slp_cost): Likewise.
	* tree-vect-stmts.c (vect_model_store_cost): Likewise.
	(vect_model_load_cost): Likewise.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vect-slp.c (vect_record_max_nunits, vect_build_slp_tree_1)
	(vect_build_slp_tree_2, vect_build_slp_tree): Change max_nunits
	from an unsigned int * to a poly_uint64_pod *.
	(calculate_unrolling_factor): New function.
	(vect_analyze_slp_instance): Use it.  Track polynomial max_nunits.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* tree-vectorizer.h (_slp_instance::unrolling_factor): Change
	from an unsigned int to a poly_uint64.
	(_loop_vec_info::slp_unrolling_factor): Likewise.
	(_loop_vec_info::vectorization_factor): Change from an int
	to a poly_uint64.
	(MAX_VECTORIZATION_FACTOR): Bump from 64 to INT_MAX.
	(vect_get_num_vectors): New function.
	(vect_update_max_nunits, vect_vf_for_cost): Likewise.
	(vect_get_num_copies): Use vect_get_num_vectors.
	(vect_analyze_data_ref_dependences): Change max_vf from an int *
	to an unsigned int *.
	(vect_analyze_data_refs): Change min_vf from an int * to a
	poly_uint64 *.
	(vect_transform_slp_perm_load): Take the vf as a poly_uint64 rather
	than an unsigned HOST_WIDE_INT.
	* tree-vect-data-refs.c (vect_analyze_possibly_independent_ddr)
	(vect_analyze_data_ref_dependence): Change max_vf from an int *
	to an unsigned int *.
	(vect_analyze_data_ref_dependences): Likewise.
	(vect_compute_data_ref_alignment): Handle polynomial vf.
	(vect_enhance_data_refs_alignment): Likewise.
	(vect_prune_runtime_alias_test_list): Likewise.
	(vect_shift_permute_load_chain): Likewise.
	(vect_supportable_dr_alignment): Likewise.
	(dependence_distance_ge_vf): Take the vectorization factor as a
	poly_uint64 rather than an unsigned HOST_WIDE_INT.
	(vect_analyze_data_refs): Change min_vf from an int * to a
	poly_uint64 *.
	* tree-vect-loop-manip.c (vect_gen_scalar_loop_niters): Take
	vfm1 as a poly_uint64 rather than an int.  Make the same change
	for the returned bound_scalar.
	(vect_gen_vector_loop_niters): Handle polynomial vf.
	(vect_do_peeling): Likewise.  Update call to
	vect_gen_scalar_loop_niters and handle polynomial bound_scalars.
	(vect_gen_vector_loop_niters_mult_vf): Assert that the vf must
	be constant.
	* tree-vect-loop.c (vect_determine_vectorization_factor)
	(vect_update_vf_for_slp, vect_analyze_loop_2): Handle polynomial vf.
	(vect_get_known_peeling_cost): Likewise.
	(vect_estimate_min_profitable_iters, vectorizable_reduction): Likewise.
	(vect_worthwhile_without_simd_p, vectorizable_induction): Likewise.
	(vect_transform_loop): Likewise.  Use the lowest possible VF when
	updating the upper bounds of the loop.
	(vect_min_worthwhile_factor): Make static.  Return an unsigned int
	rather than an int.
	* tree-vect-slp.c (vect_attempt_slp_rearrange_stmts): Cope with
	polynomial unroll factors.
	(vect_analyze_slp_cost_1, vect_analyze_slp_instance): Likewise.
	(vect_make_slp_decision): Likewise.
	(vect_supported_load_permutation_p): Likewise, and polynomial
	vf too.
	(vect_analyze_slp_cost): Handle polynomial vf.
	(vect_slp_analyze_node_operations): Likewise.
	(vect_slp_analyze_bb_1): Likewise.
	(vect_transform_slp_perm_load): Take the vf as a poly_uint64 rather
	than an unsigned HOST_WIDE_INT.
	* tree-vect-stmts.c (vectorizable_simd_clone_call, vectorizable_store)
	(vectorizable_load): Handle polynomial vf.
	* tree-vectorizer.c (simduid_to_vf::vf): Change from an int to
	a poly_uint64.
	(adjust_simduid_builtins, shrink_simd_arrays): Update accordingly.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

	* match.pd: Handle bit operations involving three constants
	and try to fold one pair.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-vect-loop-manip.c: Include gimple-fold.h.
	(slpeel_make_loop_iterate_ntimes): Add step, final_iv and
	niters_maybe_zero parameters.  Handle other cases besides a step of 1.
	(vect_gen_vector_loop_niters): Add a step_vector_ptr parameter.
	Add a path that uses a step of VF instead of 1, but disable it
	for now.
	(vect_do_peeling): Add step_vector, niters_vector_mult_vf_var
	and niters_no_overflow parameters.  Update calls to
	slpeel_make_loop_iterate_ntimes and vect_gen_vector_loop_niters.
	Create a new SSA name if the latter choses to use a ste other
	than zero, and return it via niters_vector_mult_vf_var.
	* tree-vect-loop.c (vect_transform_loop): Update calls to
	vect_do_peeling, vect_gen_vector_loop_niters and
	slpeel_make_loop_iterate_ntimes.
	* tree-vectorizer.h (slpeel_make_loop_iterate_ntimes, vect_do_peeling)
	(vect_gen_vector_loop_niters): Update declarations after above changes.

2018-01-02  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000.md (floor<mode>2): Add support for IEEE
	128-bit round to integer instructions.
	(ceil<mode>2): Likewise.
	(btrunc<mode>2): Likewise.
	(round<mode>2): Likewise.

2018-01-02  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

	* config/rs6000/rs6000-string.c (expand_block_move): Allow the use of
	unaligned VSX load/store on P8/P9.
	(expand_block_clear): Allow the use of unaligned VSX
	load/store on P8/P9.

2018-01-02  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/rs6000-p8swap.c (swap_feeds_both_load_and_store):
	New function.
	(rs6000_analyze_swaps): Mark a web unoptimizable if it contains a
	swap associated with both a load and a store.

2018-01-02  Andrew Waterman  <andrew@sifive.com>

	* config/riscv/linux.h (ICACHE_FLUSH_FUNC): New.
	* config/riscv/riscv.md (clear_cache): Use it.

2018-01-02  Artyom Skrobov  <tyomitch@gmail.com>

	* web.c: Remove out-of-date comment.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* expr.c (fixup_args_size_notes): Check that any existing
	REG_ARGS_SIZE notes are correct, and don't try to re-add them.
	(emit_single_push_insn_1): Move stack_pointer_delta adjustment to...
	(emit_single_push_insn): ...here.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* rtl.h (CONST_VECTOR_ELT): Redefine to const_vector_elt.
	(const_vector_encoded_nelts): New function.
	(CONST_VECTOR_NUNITS): Redefine to use GET_MODE_NUNITS.
	(const_vector_int_elt, const_vector_elt): Declare.
	* emit-rtl.c (const_vector_int_elt_1): New function.
	(const_vector_elt): Likewise.
	* simplify-rtx.c (simplify_immed_subreg): Avoid taking the address
	of CONST_VECTOR_ELT.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* expr.c: Include rtx-vector-builder.h.
	(const_vector_mask_from_tree): Use rtx_vector_builder and operate
	directly on the tree encoding.
	(const_vector_from_tree): Likewise.
	* optabs.c: Include rtx-vector-builder.h.
	(expand_vec_perm_var): Use rtx_vector_builder and create a repeating
	sequence of "u" values.
	* vec-perm-indices.c: Include rtx-vector-builder.h.
	(vec_perm_indices_to_rtx): Use rtx_vector_builder and operate
	directly on the vec_perm_indices encoding.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* doc/rtl.texi (const_vector): Describe new encoding scheme.
	* Makefile.in (OBJS): Add rtx-vector-builder.o.
	* rtx-vector-builder.h: New file.
	* rtx-vector-builder.c: Likewise.
	* rtl.h (rtx_def::u2): Add a const_vector field.
	(CONST_VECTOR_NPATTERNS): New macro.
	(CONST_VECTOR_NELTS_PER_PATTERN): Likewise.
	(CONST_VECTOR_DUPLICATE_P): Likewise.
	(CONST_VECTOR_STEPPED_P): Likewise.
	(CONST_VECTOR_ENCODED_ELT): Likewise.
	(const_vec_duplicate_p): Check for a duplicated vector encoding.
	(unwrap_const_vec_duplicate): Likewise.
	(const_vec_series_p): Check for a non-duplicated vector encoding.
	Say that the function only returns true for integer vectors.
	* emit-rtl.c: Include rtx-vector-builder.h.
	(gen_const_vec_duplicate_1): Delete.
	(gen_const_vector): Call gen_const_vec_duplicate instead of
	gen_const_vec_duplicate_1.
	(const_vec_series_p_1): Operate directly on the CONST_VECTOR encoding.
	(gen_const_vec_duplicate): Use rtx_vector_builder.
	(gen_const_vec_series): Likewise.
	(gen_rtx_CONST_VECTOR): Likewise.
	* config/powerpcspe/powerpcspe.c: Include rtx-vector-builder.h.
	(swap_const_vector_halves): Take an rtx pointer rather than rtx.
	Build a new vector rather than modifying a CONST_VECTOR in-place.
	(handle_special_swappables): Update call accordingly.
	* config/rs6000/rs6000-p8swap.c: Include rtx-vector-builder.h.
	(swap_const_vector_halves): Take an rtx pointer rather than rtx.
	Build a new vector rather than modifying a CONST_VECTOR in-place.
	(handle_special_swappables): Update call accordingly.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* simplify-rtx.c (simplify_const_binary_operation): Use
	CONST_VECTOR_ELT instead of XVECEXP.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* tree-cfg.c (verify_gimple_assign_ternary): Allow the size of
	the selector elements to be different from the data elements
	if the selector is a VECTOR_CST.
	* tree-vect-stmts.c (vect_gen_perm_mask_any): Use a vector of
	ssizetype for the selector.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* optabs.c (shift_amt_for_vec_perm_mask): Try using series_p
	before testing each element individually.
	* tree-vect-generic.c (lower_vec_perm): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* selftest.h (selftest::vec_perm_indices_c_tests): Declare.
	* selftest-run-tests.c (selftest::run_tests): Call it.
	* vector-builder.h (vector_builder::operator ==): New function.
	(vector_builder::operator !=): Likewise.
	* vec-perm-indices.h (vec_perm_indices::series_p): Declare.
	(vec_perm_indices::all_from_input_p): New function.
	* vec-perm-indices.c (vec_perm_indices::series_p): Likewise.
	(test_vec_perm_12, selftest::vec_perm_indices_c_tests): Likewise.
	* fold-const.c (fold_ternary_loc): Use tree_to_vec_perm_builder
	instead of reading the VECTOR_CST directly.  Detect whether both
	vector inputs are the same before constructing the vec_perm_indices,
	and update the number of inputs argument accordingly.  Use the
	utility functions added above.  Only construct sel2 if we need to.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* optabs.c (expand_vec_perm_var): Use an explicit encoding for
	the broadcast of the low byte.
	(expand_mult_highpart): Use an explicit encoding for the permutes.
	* optabs-query.c (can_mult_highpart_p): Likewise.
	* tree-vect-loop.c (calc_vec_perm_mask_for_shift): Likewise.
	* tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
	(vectorizable_bswap): Likewise.
	* tree-vect-data-refs.c (vect_grouped_store_supported): Use an
	explicit encoding for the power-of-2 permutes.
	(vect_permute_store_chain): Likewise.
	(vect_grouped_load_supported): Likewise.
	(vect_permute_load_chain): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* vec-perm-indices.h (vec_perm_indices_to_tree): Declare.
	* vec-perm-indices.c (vec_perm_indices_to_tree): New function.
	* tree-ssa-forwprop.c (simplify_vector_constructor): Use it.
	* tree-vect-slp.c (vect_transform_slp_perm_load): Likewise.
	* tree-vect-stmts.c (vectorizable_bswap): Likewise.
	(vect_gen_perm_mask_any): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* int-vector-builder.h: New file.
	* vec-perm-indices.h: Include int-vector-builder.h.
	(vec_perm_indices): Redefine as an int_vector_builder.
	(auto_vec_perm_indices): Delete.
	(vec_perm_builder): Redefine as a stand-alone class.
	(vec_perm_indices::vec_perm_indices): New function.
	(vec_perm_indices::clamp): Likewise.
	* vec-perm-indices.c: Include fold-const.h and tree-vector-builder.h.
	(vec_perm_indices::new_vector): New function.
	(vec_perm_indices::new_expanded_vector): Update for new
	vec_perm_indices class.
	(vec_perm_indices::rotate_inputs): New function.
	(vec_perm_indices::all_in_range_p): Operate directly on the
	encoded form, without computing elided elements.
	(tree_to_vec_perm_builder): Operate directly on the VECTOR_CST
	encoding.  Update for new vec_perm_indices class.
	* optabs.c (expand_vec_perm_const): Create a vec_perm_indices for
	the given vec_perm_builder.
	(expand_vec_perm_var): Update vec_perm_builder constructor.
	(expand_mult_highpart): Use vec_perm_builder instead of
	auto_vec_perm_indices.
	* optabs-query.c (can_mult_highpart_p): Use vec_perm_builder and
	vec_perm_indices instead of auto_vec_perm_indices.  Use a single
	or double series encoding as appropriate.
	* fold-const.c (fold_ternary_loc): Use vec_perm_builder and
	vec_perm_indices instead of auto_vec_perm_indices.
	* tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
	* tree-vect-data-refs.c (vect_grouped_store_supported): Likewise.
	(vect_permute_store_chain): Likewise.
	(vect_grouped_load_supported): Likewise.
	(vect_permute_load_chain): Likewise.
	(vect_shift_permute_load_chain): Likewise.
	* tree-vect-slp.c (vect_build_slp_tree_1): Likewise.
	(vect_transform_slp_perm_load): Likewise.
	(vect_schedule_slp_instance): Likewise.
	* tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
	(vectorizable_mask_load_store): Likewise.
	(vectorizable_bswap): Likewise.
	(vectorizable_store): Likewise.
	(vectorizable_load): Likewise.
	* tree-vect-generic.c (lower_vec_perm): Use vec_perm_builder and
	vec_perm_indices instead of auto_vec_perm_indices.  Use
	tree_to_vec_perm_builder to read the vector from a tree.
	* tree-vect-loop.c (calc_vec_perm_mask_for_shift): Take a
	vec_perm_builder instead of a vec_perm_indices.
	(have_whole_vector_shift): Use vec_perm_builder and
	vec_perm_indices instead of auto_vec_perm_indices.  Leave the
	truncation to calc_vec_perm_mask_for_shift.
	(vect_create_epilog_for_reduction): Likewise.
	* config/aarch64/aarch64.c (expand_vec_perm_d::perm): Change
	from auto_vec_perm_indices to vec_perm_indices.
	(aarch64_expand_vec_perm_const_1): Use rotate_inputs on d.perm
	instead of changing individual elements.
	(aarch64_vectorize_vec_perm_const): Use new_vector to install
	the vector in d.perm.
	* config/arm/arm.c (expand_vec_perm_d::perm): Change
	from auto_vec_perm_indices to vec_perm_indices.
	(arm_expand_vec_perm_const_1): Use rotate_inputs on d.perm
	instead of changing individual elements.
	(arm_vectorize_vec_perm_const): Use new_vector to install
	the vector in d.perm.
	* config/powerpcspe/powerpcspe.c (rs6000_expand_extract_even):
	Update vec_perm_builder constructor.
	(rs6000_expand_interleave): Likewise.
	* config/rs6000/rs6000.c (rs6000_expand_extract_even): Likewise.
	(rs6000_expand_interleave): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* optabs-query.c (can_vec_perm_var_p): Check whether lowering
	to qimode could truncate the indices.
	* optabs.c (expand_vec_perm_var): Likewise.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* Makefile.in (OBJS): Add vec-perm-indices.o.
	* vec-perm-indices.h: New file.
	* vec-perm-indices.c: Likewise.
	* target.h (vec_perm_indices): Replace with a forward class
	declaration.
	(auto_vec_perm_indices): Move to vec-perm-indices.h.
	* optabs.h: Include vec-perm-indices.h.
	(expand_vec_perm): Delete.
	(selector_fits_mode_p, expand_vec_perm_var): Declare.
	(expand_vec_perm_const): Declare.
	* target.def (vec_perm_const_ok): Replace with...
	(vec_perm_const): ...this new hook.
	* doc/tm.texi.in (TARGET_VECTORIZE_VEC_PERM_CONST_OK): Replace with...
	(TARGET_VECTORIZE_VEC_PERM_CONST): ...this new hook.
	* doc/tm.texi: Regenerate.
	* optabs.def (vec_perm_const): Delete.
	* doc/md.texi (vec_perm_const): Likewise.
	(vec_perm): Refer to TARGET_VECTORIZE_VEC_PERM_CONST.
	* expr.c (expand_expr_real_2): Use expand_vec_perm_const rather than
	expand_vec_perm for constant permutation vectors.  Assert that
	the mode of variable permutation vectors is the integer equivalent
	of the mode that is being permuted.
	* optabs-query.h (selector_fits_mode_p): Declare.
	* optabs-query.c: Include vec-perm-indices.h.
	(selector_fits_mode_p): New function.
	(can_vec_perm_const_p): Check whether targetm.vectorize.vec_perm_const
	is defined, instead of checking whether the vec_perm_const_optab
	exists.  Use targetm.vectorize.vec_perm_const instead of
	targetm.vectorize.vec_perm_const_ok.  Check whether the indices
	fit in the vector mode before using a variable permute.
	* optabs.c (shift_amt_for_vec_perm_mask): Take a mode and a
	vec_perm_indices instead of an rtx.
	(expand_vec_perm): Replace with...
	(expand_vec_perm_const): ...this new function.  Take the selector
	as a vec_perm_indices rather than an rtx.  Also take the mode of
	the selector.  Update call to shift_amt_for_vec_perm_mask.
	Use targetm.vectorize.vec_perm_const instead of vec_perm_const_optab.
	Use vec_perm_indices::new_expanded_vector to expand the original
	selector into bytes.  Check whether the indices fit in the vector
	mode before using a variable permute.
	(expand_vec_perm_var): Make global.
	(expand_mult_highpart): Use expand_vec_perm_const.
	* fold-const.c: Includes vec-perm-indices.h.
	* tree-ssa-forwprop.c: Likewise.
	* tree-vect-data-refs.c: Likewise.
	* tree-vect-generic.c: Likewise.
	* tree-vect-loop.c: Likewise.
	* tree-vect-slp.c: Likewise.
	* tree-vect-stmts.c: Likewise.
	* config/aarch64/aarch64-protos.h (aarch64_expand_vec_perm_const):
	Delete.
	* config/aarch64/aarch64-simd.md (vec_perm_const<mode>): Delete.
	* config/aarch64/aarch64.c (aarch64_expand_vec_perm_const)
	(aarch64_vectorize_vec_perm_const_ok): Fuse into...
	(aarch64_vectorize_vec_perm_const): ...this new function.
	(TARGET_VECTORIZE_VEC_PERM_CONST_OK): Delete.
	(TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
	* config/arm/arm-protos.h (arm_expand_vec_perm_const): Delete.
	* config/arm/vec-common.md (vec_perm_const<mode>): Delete.
	* config/arm/arm.c (TARGET_VECTORIZE_VEC_PERM_CONST_OK): Delete.
	(TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
	(arm_expand_vec_perm_const, arm_vectorize_vec_perm_const_ok): Merge
	into...
	(arm_vectorize_vec_perm_const): ...this new function.  Explicitly
	check for NEON modes.
	* config/i386/i386-protos.h (ix86_expand_vec_perm_const): Delete.
	* config/i386/sse.md (VEC_PERM_CONST, vec_perm_const<mode>): Delete.
	* config/i386/i386.c (ix86_expand_vec_perm_const_1): Update comment.
	(ix86_expand_vec_perm_const, ix86_vectorize_vec_perm_const_ok): Merge
	into...
	(ix86_vectorize_vec_perm_const): ...this new function.  Incorporate
	the old VEC_PERM_CONST conditions.
	* config/ia64/ia64-protos.h (ia64_expand_vec_perm_const): Delete.
	* config/ia64/vect.md (vec_perm_const<mode>): Delete.
	* config/ia64/ia64.c (ia64_expand_vec_perm_const)
	(ia64_vectorize_vec_perm_const_ok): Merge into...
	(ia64_vectorize_vec_perm_const): ...this new function.
	* config/mips/loongson.md (vec_perm_const<mode>): Delete.
	* config/mips/mips-msa.md (vec_perm_const<mode>): Delete.
	* config/mips/mips-ps-3d.md (vec_perm_constv2sf): Delete.
	* config/mips/mips-protos.h (mips_expand_vec_perm_const): Delete.
	* config/mips/mips.c (mips_expand_vec_perm_const)
	(mips_vectorize_vec_perm_const_ok): Merge into...
	(mips_vectorize_vec_perm_const): ...this new function.
	* config/powerpcspe/altivec.md (vec_perm_constv16qi): Delete.
	* config/powerpcspe/paired.md (vec_perm_constv2sf): Delete.
	* config/powerpcspe/spe.md (vec_perm_constv2si): Delete.
	* config/powerpcspe/vsx.md (vec_perm_const<mode>): Delete.
	* config/powerpcspe/powerpcspe-protos.h (altivec_expand_vec_perm_const)
	(rs6000_expand_vec_perm_const): Delete.
	* config/powerpcspe/powerpcspe.c (TARGET_VECTORIZE_VEC_PERM_CONST_OK):
	Delete.
	(TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
	(altivec_expand_vec_perm_const_le): Take each operand individually.
	Operate on constant selectors rather than rtxes.
	(altivec_expand_vec_perm_const): Likewise.  Update call to
	altivec_expand_vec_perm_const_le.
	(rs6000_expand_vec_perm_const): Delete.
	(rs6000_vectorize_vec_perm_const_ok): Delete.
	(rs6000_vectorize_vec_perm_const): New function.
	(rs6000_do_expand_vec_perm): Take a vec_perm_builder instead of
	an element count and rtx array.
	(rs6000_expand_extract_even): Update call accordingly.
	(rs6000_expand_interleave): Likewise.
	* config/rs6000/altivec.md (vec_perm_constv16qi): Delete.
	* config/rs6000/paired.md (vec_perm_constv2sf): Delete.
	* config/rs6000/vsx.md (vec_perm_const<mode>): Delete.
	* config/rs6000/rs6000-protos.h (altivec_expand_vec_perm_const)
	(rs6000_expand_vec_perm_const): Delete.
	* config/rs6000/rs6000.c (TARGET_VECTORIZE_VEC_PERM_CONST_OK): Delete.
	(TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.
	(altivec_expand_vec_perm_const_le): Take each operand individually.
	Operate on constant selectors rather than rtxes.
	(altivec_expand_vec_perm_const): Likewise.  Update call to
	altivec_expand_vec_perm_const_le.
	(rs6000_expand_vec_perm_const): Delete.
	(rs6000_vectorize_vec_perm_const_ok): Delete.
	(rs6000_vectorize_vec_perm_const): New function.  Remove stray
	reference to the SPE evmerge intructions.
	(rs6000_do_expand_vec_perm): Take a vec_perm_builder instead of
	an element count and rtx array.
	(rs6000_expand_extract_even): Update call accordingly.
	(rs6000_expand_interleave): Likewise.
	* config/sparc/sparc.md (vec_perm_constv8qi): Delete in favor of...
	* config/sparc/sparc.c (sparc_vectorize_vec_perm_const): ...this
	new function.
	(TARGET_VECTORIZE_VEC_PERM_CONST): Redefine.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* optabs.c (expand_vec_perm_1): Assert that SEL has an integer
	vector mode and that that mode matches the mode of the data
	being permuted.
	(expand_vec_perm): Split handling of non-CONST_VECTOR selectors
	out into expand_vec_perm_var.  Do all CONST_VECTOR handling here,
	directly using expand_vec_perm_1 when forcing selectors into
	registers.
	(expand_vec_perm_var): New function, split out from expand_vec_perm.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* optabs-query.h (can_vec_perm_p): Delete.
	(can_vec_perm_var_p, can_vec_perm_const_p): Declare.
	* optabs-query.c (can_vec_perm_p): Split into...
	(can_vec_perm_var_p, can_vec_perm_const_p): ...these two functions.
	(can_mult_highpart_p): Use can_vec_perm_const_p to test whether a
	particular selector is valid.
	* tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
	* tree-vect-data-refs.c (vect_grouped_store_supported): Likewise.
	(vect_grouped_load_supported): Likewise.
	(vect_shift_permute_load_chain): Likewise.
	* tree-vect-slp.c (vect_build_slp_tree_1): Likewise.
	(vect_transform_slp_perm_load): Likewise.
	* tree-vect-stmts.c (perm_mask_for_reverse): Likewise.
	(vectorizable_bswap): Likewise.
	(vect_gen_perm_mask_checked): Likewise.
	* fold-const.c (fold_ternary_loc): Likewise.  Don't take
	implementations of variable permutation vectors into account
	when deciding which selector to use.
	* tree-vect-loop.c (have_whole_vector_shift): Don't check whether
	vec_perm_const_optab is supported; instead use can_vec_perm_const_p
	with a false third argument.
	* tree-vect-generic.c (lower_vec_perm): Use can_vec_perm_const_p
	to test whether the constant selector is valid and can_vec_perm_var_p
	to test whether a variable selector is valid.

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* optabs-query.h (can_vec_perm_p): Take a const vec_perm_indices *.
	* optabs-query.c (can_vec_perm_p): Likewise.
	* fold-const.c (fold_vec_perm): Take a const vec_perm_indices &
	instead of vec_perm_indices.
	* tree-vectorizer.h (vect_gen_perm_mask_any): Likewise,
	(vect_gen_perm_mask_checked): Likewise,
	* tree-vect-stmts.c (vect_gen_perm_mask_any): Likewise,
	(vect_gen_perm_mask_checked): Likewise,

2018-01-02  Richard Sandiford  <richard.sandiford@linaro.org>

	* optabs-query.h (qimode_for_vec_perm): Declare.
	* optabs-query.c (can_vec_perm_p): Split out qimode search to...
	(qimode_for_vec_perm): ...this new function.
	* optabs.c (expand_vec_perm): Use qimode_for_vec_perm.

2018-01-02  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

	* rtlanal.c (canonicalize_condition): Return 0 if final rtx
	does not have a conditional at the top.

2018-01-02  Richard Biener  <rguenther@suse.de>

	* ipa-inline.c (big_speedup_p): Fix expression.

2018-01-02  Jan Hubicka  <hubicka@ucw.cz>

	PR target/81616
	* config/i386/x86-tune-costs.h: Increase cost of integer load costs
	for generic 4->6.

2018-01-02  Jan Hubicka  <hubicka@ucw.cz>

	PR target/81616
	Generic tuning.
	* x86-tune-costs.h (generic_cost): Reduce cost of FDIV 20->17,
	cost of sqrt 20->14, DIVSS 18->13, DIVSD 32->17, SQRtSS 30->14
	and SQRTsD 58->18, cond_not_taken_branch_cost. 2->1. Increase
	cond_taken_branch_cost 3->4.

2018-01-01  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/83581
	* tree-loop-distribution.c (pass_loop_distribution::execute): Return
	TODO_cleanup_cfg if any changes have been made.

	PR middle-end/83608
	* expr.c (store_expr_with_bounds): Use simplify_gen_subreg instead of
	convert_modes if target mode has the right side, but different mode
	class.

	PR middle-end/83609
	* expr.c (expand_assignment): Fix up a typo in simplify_gen_subreg
	last argument when extracting from CONCAT.  If either from_real or
	from_imag is NULL, use expansion through memory.  If result is not
	a CONCAT and simplify_gen_subreg fails, try to simplify_gen_subreg
	the parts directly to inner mode, if even that fails, use expansion
	through memory.

	PR middle-end/83623
	* expmed.c (expand_shift_1): For 2-byte rotates by BITS_PER_UNIT,
	check for bswap in mode rather than HImode and use that in expand_unop
	too.

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