2017-09-06  Gary Dismukes  <dismukes@adacore.com>

	* exp_ch5.adb, s-diinio.ads, sem_ch4.adb, s-diflio.ads: Minor spelling
	adjustments and a typo fix.

2017-09-06  Yannick Moy  <moy@adacore.com>

	* sem_res.adb (Resolve_Call): Do not issue info
	message about inlining of calls to functions in assertions,
	for functions whose body has not been seen yet.

2017-09-06  Bob Duff  <duff@adacore.com>

	* a-comlin.ads, a-comlin.adb (Argument): Simplify the code, now that
	we can use modern Ada in this package.
	* s-resfil.ads, s-resfil.adb, a-clrefi.ads, a-clrefi.adb:
	Move Ada.Command_Line.Response_File to System.Response_File,
	and make Ada.Command_Line.Response_File into a rename of
	System.Response_File. This is to avoid having gnatbind depend
	Ada.Command_Line, which would damage the bootstrap process now
	that Ada.Command_Line contains modern Ada (the raise expression).
	* gnatbind.adb: Avoid dependence on
	Ada.Command_Line. Depend on System.Response_File instead
	of Ada.Command_Line.Response_File. Change one call to
	Ada.Command_Line.Command_Name to use Fill_Arg.	Change one call
	to Ada.Command_Line.Argument_Count to use Arg_Count.
	* gcc-interface/Make-lang.in, Makefile.rtl: Take note of the new files.

From-SVN: r251775

frontend.adb (Frontend): Skip -gnatec=gnat.adc switch, because we've already read gnat.adc by default.

2017-09-06  Bob Duff  <duff@adacore.com>

	* frontend.adb (Frontend): Skip -gnatec=gnat.adc
	switch, because we've already read gnat.adc by default.

2017-09-06  Bob Duff  <duff@adacore.com>

	* exp_ch5.adb (Get_Default_Iterator): Replace
	"Assert(False)" with "return Iter", because if an iterable
	type is derived from a noniterable one, then we won't find an
	overriding or inherited default iterator.

From-SVN: r251774

2017-09-06  Yannick Moy  <moy@adacore.com>

	* sem_warn.adb (Warn_On_Suspicious_Index): Improve warning when the
	literal index used to access a string is null or negative.

2017-09-06  Hristian Kirtchev  <kirtchev@adacore.com>

	* einfo.adb (Status_Flag_Or_Transient_Decl): The attribute is now
	allowed on loop parameters.
	(Set_Status_Flag_Or_Transient_Decl): The attribute is now allowed
	on loop parameters.
	(Write_Field15_Name): Update the output for
	Status_Flag_Or_Transient_Decl.
	* einfo.ads: Attribute Status_Flag_Or_Transient_Decl now applies
	to loop parameters. Update the documentation of the attribute
	and the E_Loop_Parameter entity.
	* exp_ch7.adb (Process_Declarations): Remove the bogus guard
	which assumes that cursors can never be controlled.
	* exp_util.adb (Requires_Cleanup_Actions): Remove the bogus
	guard which assumes that cursors can never be controlled.

From-SVN: r251773

2017-09-06  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_attr.adb, sem_util.adb, sem_attr.adb, sem_ch6.adb, sem_ch8.adb,
	sem_warn.adb: Minor reformatting.

From-SVN: r251772

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_warn.adb (Warn_On_Overlapping_Actuals): Refine previous
	fix and preserve older GNAT warning on overlapping actuals that
	are not elementary types.

2017-09-06  Justin Squirek  <squirek@adacore.com>

	* sem_attr.adb: Comment correction.

From-SVN: r251771

2017-09-06  Gary Dismukes  <dismukes@adacore.com>

	* sem_util.adb: Minor reformatting.

2017-09-06  Yannick Moy  <moy@adacore.com>

	* a-comlin.ads (Argument): Add precondition for analysis.

From-SVN: r251770

From-SVN: r251769

2017-09-06  Yannick Moy  <moy@adacore.com>

	* sem_res.adb (Resolve): Update message for function call as statement.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch6.adb (Check_Returns): Clean up warnings coming from
	generated bodies for renamings that are completions, when renamed
	procedure is No_Return.
	* sem_ch8.adb (Analyze_Subprogram_Renaming): Implement legality
	rule in 6.5.1 (7/2): if a renaming is a completion of a subprogram
	with No_Return, the renamed entity must be No_Return as well.

From-SVN: r251768

2017-09-06  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch5.adb, freeze.adb, exp_ch4.adb, exp_ch6.adb, lib-xref.adb:
	Minor reformatting.

2017-09-06  Justin Squirek  <squirek@adacore.com>

	* exp_attr.adb (Expand_N_Attribute_Reference): Modified Image
	attribute cases (Rewrite_Object_Reference_Image): Created to
	aid the rewriting of new-style 'Image attributes.
	* sem_attr.adb (Analyze_Attribute): Modified Image attribute cases
	(Check_Object_Reference_Image): Created to handle verification of
	'Image with object-references as prefixes.
	* sem_util.ads, sem_util.adb (Is_Image_Applied_To_Object):
	Create predicate to identify cases where an 'Image attribute's
	prefix applies to an object reference.

From-SVN: r251767

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* freeze.adb (Freeze_Entity): Do not generate a freeze
	node for a generic unit, even if it includes delayed aspect
	specifications. Freeze nodes for generic entities must never
	appear in the tree that reaches the back-end of the compiler.

From-SVN: r251766

2017-09-06  Yannick Moy  <moy@adacore.com>

	* treepr.adb (Print_Entity_Info): Do not print empty Elist.

2017-09-06  Yannick Moy  <moy@adacore.com>

	* inline.adb (Can_Be_Inlined_In_GNATprove_Mode): Do not consider calls
	to subprograms in other units as possibly inlined.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* freeze.adb (Freeze_Entity): For a derived type that has no
	explicit delayed aspects but may inherit delayed aspects from its
	parent type, analyze aspect at freeze point for proper capture
	of an inherited aspect.

2017-09-06  Arnaud Charlet  <charlet@adacore.com>

	* lib-xref.adb (Get_Through_Renamings): Get through subprogram
	renamings; also, avoid repeated calls to Renamed_Object when getting
	through object renamings.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch3.adb (Array_Type_Declaration): Handle properly an
	array type declaration in a private part, when an index is a
	subtype indication of a discrete type with a private partial view.

2017-09-06  Javier Miranda  <miranda@adacore.com>

	* exp_ch4.adb (Expand_Modular_Op): Force generating
	temporary to improve the generated code.

2017-09-06  Tristan Gingold  <gingold@adacore.com>

	* s-fatgen.adb: Minor typo fix in comment.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* exp_ch5.adb (Make_Field_Assign): If the type
	of the right-hand side has stored constraint, use its values
	(except for those that are renamings of parent discriminants)
	to produce additional assignments for the discriminants of the
	left-hand side, which are invisible in the righ-hand side and
	not retrievable as selected components.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_util.adb (Needs_One_Formal): The first formal of such a
	function must be a controlling formal, so that Obj.F (X, Y)
	can have the interpretation F(Obj)(X, Y).
	* sem_util.ads: Clarify documentation.

2017-09-06  Eric Botcazou  <ebotcazou@adacore.com>

	* table.ads, table.adb: Restore original implementation.
	* namet.h (Names_Ptr): Adjust back.
	(Name_Chars_Ptr): Likewise.
	* uintp.h (Uints_Ptr): Likewise.
	(Udigits_Ptr): Likewise.
	* g-table.ads: Remove pragma Compiler_Unit_Warning.
	* par_sco.adb: Do not with GNAT.Table and use Table consistently.
	* scos.ads: Replace GNAT.Table with Table and adjust instantiations.
	* spark_xrefs.ads: Likewise.
	* scos.h: Undo latest changes.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch12.adb (Analyze_Subprogram_Instantiation): Propagate
	No_Return flag to instance if pragma applies to generic unit. This
	must be done explicitly because the pragma does not appear
	directly in the generic declaration (unlike the corresponding
	aspect specification).

From-SVN: r251765

From-SVN: r251764

2017-09-06  Eric Botcazou  <ebotcazou@adacore.com>

	* sem_ch7.adb (Has_Referencer): Move up and expand comment
	explaining the test used to detect inlining.  Use same test
	in second occurrence.
	(Analyze_Package_Body_Helper): Minor formatting fixes.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* exp_ch4.adb (Handle_Changed_Representation): For an untagged
	derived type with a mixture of renamed and constrained parent
	discriminants, the constraint for the target must obtain the
	discriminant values from both the operand and from the stored
	constraint for it, given that the constrained discriminants are
	not visible in the object.
	* exp_ch5.adb (Make_Field_Assign): The type of the right-hand
	side may be derived from that of the left-hand side (as in the
	case of an assignment with a change of representation) so the
	discriminant to be used in the retrieval of the value of the
	component must be the entity in the type of the right-hand side.

From-SVN: r251763

2017-09-06  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_ch3.adb, sem_ch7.adb, sem_util.adb, g-debpoo.adb, sem_ch4.adb,
	sem_ch6.adb, sem_ch8.adb: Minor reformatting.
	* exp_util.adb (Is_Source_Object): Account for
	the cases where the source object may appear as a dereference
	or within a type conversion.
	* exp_ch6.adb: Fix missing space in error message.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_prag.adb: Update description of Eliminate.

From-SVN: r251762

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_attr.adb (Analyze_Attribute, case 'Loop_Entry): Handle
	properly an attribute reference 'Loop_Entry that appears in the
	list of indices of an indexed expression, to prevent an infinite
	loop in the compiler.

2017-09-06  Bob Duff  <duff@adacore.com>

	* s-fileio.adb (Name): Do not raise Use_Error for temp files.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch4.adb (Analyze_Set_Membership):  If an alternative
	in a set membership is an overloaded enumeration literal, and
	the type of the alternative is resolved from a previous one,
	replace the entity of the alternative as well as the type,
	to prevent inconsistencies between the entity and the type.

From-SVN: r251761

2017-09-06  Eric Botcazou  <ebotcazou@adacore.com>

	* ali.ads (ALIs_Record): Add No_Component_Reordering component.
	(No_Component_Reordering_Specified): New switch.
	* ali.adb (Initialize_ALI): Set No_Component_Reordering_Specified.
	(Scan_ALI): Set No_Component_Reordering and deal with NC marker.
	* bcheck.adb (Check_Consistent_No_Component_Reordering):
	New check.
	(Check_Configuration_Consistency): Invoke it.
	* debug.adb (d.r): Toggle the effect of the switch.
	(d.v): Change to no-op.
	* einfo.ads (Has_Complex_Representation):
	Restrict to record types.
	(No_Reordering): New alias for Flag239.
	(OK_To_Reorder_Components): Delete.
	(No_Reordering): Declare.
	(Set_No_Reordering): Likewise.
	(OK_To_Reorder_Components): Delete.
	(Set_OK_To_Reorder_Components): Likewise.
	* einfo.adb (Has_Complex_Representation): Expect record types.
	(No_Reordering): New function.
	(OK_To_Reorder_Components): Delete.
	(Set_Has_Complex_Representation): Expect base record types.
	(Set_No_Reordering): New procedure.
	(Set_OK_To_Reorder_Components): Delete.
	(Write_Entity_Flags): Adjust to above change.
	* fe.h (Debug_Flag_Dot_R): New macro and declaration.
	* freeze.adb (Freeze_Record_Type): Remove conditional code setting
	OK_To_Reorder_Components on record types with convention Ada.
	* lib-writ.adb (Write_ALI): Deal with NC marker.
	* opt.ads (No_Component_Reordering): New flag.
	(No_Component_Reordering_Config): Likewise.
	(Config_Switches_Type): Add No_Component_Reordering component.
	* opt.adb (Register_Opt_Config_Switches): Copy
	No_Component_Reordering onto No_Component_Reordering_Config.
	(Restore_Opt_Config_Switches): Restore No_Component_Reordering.
	(Save_Opt_Config_Switches): Save No_Component_Reordering.
	(Set_Opt_Config_Switches): Set No_Component_Reordering.
	* par-prag.adb (Prag): Deal with Pragma_No_Component_Reordering.
	* sem_ch3.adb (Analyze_Private_Extension_Declaration): Also set the
	No_Reordering flag from the default.
	(Build_Derived_Private_Type): Likewise.
	(Build_Derived_Record_Type): Likewise.	Then inherit it
	for untagged types and clean up handling of similar flags.
	(Record_Type_Declaration): Likewise.
	* sem_ch13.adb (Same_Representation): Deal with No_Reordering and
	remove redundant test on Is_Tagged_Type.
	* sem_prag.adb (Analyze_Pragma): Handle No_Component_Reordering.
	(Sig_Flags): Likewise.
	* snames.ads-tmpl (Name_No_Component_Reordering): New name.
	(Pragma_Id): Add Pragma_No_Component_Reordering value.
	* warnsw.adb (Set_GNAT_Mode_Warnings): Enable -gnatw.q as well.
	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Record_Type>:
	Copy the layout of the parent type only if the No_Reordering
	settings match.
	(components_to_record): Reorder record types with
	convention Ada by default unless No_Reordering is set or -gnatd.r
	is specified and do not warn if No_Reordering is set in GNAT mode.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_util.ads, sem_util.adb (Check_Previous_Null_Procedure):
	new predicate to reject declarations that can be completions,
	when there is a visible prior homograph that is a null procedure.
	* sem_ch6.adb (Analyze_Null_Procedure): use it.
	* sem_ch8.adb (Analyze_Subprogram_Renaming): ditto.

2017-09-06  Thomas Quinot  <quinot@adacore.com>

	* s-regpat.adb (Compile.Parse_Literal): Fix handling of literal
	run of 253 characters or more.

From-SVN: r251760

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* einfo.adb (Designated_Type): Use Is_Incomplete_Type to handle
	properly incomplete subtypes that may be created by explicit or
	implicit declarations.
	(Is_Base_Type): Take E_Incomplete_Subtype into account.
	(Subtype_Kind): Ditto.
	* sem_ch3.adb (Build_Discriminated_Subtype): Set properly the
	Ekind of a subtype of a discriminated incomplete type.
	(Fixup_Bad_Constraint): Use Subtype_Kind in all cases, including
	incomplete types, to preserve error reporting.
	(Process_Incomplete_Dependents): Do not create a subtype
	declaration for an incomplete subtype that is created internally.
	* sem_ch7.adb (Analyze_Package_Specification): Handle properly
	incomplete subtypes that do not require a completion, either
	because they are limited views, of they are generic actuals.

2017-09-06  Hristian Kirtchev  <kirtchev@adacore.com>

	* checks.adb (Insert_Valid_Check): Remove the
	suspicious manipulation of the Do_Range_Check flag as ths is
	no linger needed. Suppress validity check when analysing the
	validation variable.

2017-09-06  Philippe Gil  <gil@adacore.com>

	* g-debpoo.adb: adapt GNAT.Debug_Pools to allow safe thread
	GNATCOLL.Memory

2017-09-06  Bob Duff  <duff@adacore.com>

	* sem_elim.adb: Minor comment fix.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_util.adb (Is_Object_Reference): A function call is an
	object reference, and thus attribute references for attributes
	that are functions (such as Pred and Succ) as well as predefined
	operators are legal in contexts that require an object, such as
	the prefix of attribute Img and the Ada2020 version of 'Image.

From-SVN: r251759

2017-09-06  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_util.adb, einfo.adb, sem_attr.adb, exp_ch4.adb, gnatls.adb,
	exp_ch3.adb, xoscons.adb: Minor reformatting.

From-SVN: r251758

2017-09-06  Raphael Amiard  <amiard@adacore.com>

	* a-chtgop.ads, a-chtgop.adb: Add versions of First and Next with
	Position parameter. If supplied, use it to provide efficient iteration.
	* a-cohase.ads, a-cohase.adb, a-cihama.ads, a-cihama.adb,
	a-cohama.ads, a-cohama.adb: Add/Use Position to provide efficient
	iteration.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* exp_util.adb (Build_Allocate_Deallocate_Proc): If the
	designated type is class-wide and the expression is an unchecked
	conversion, preserve the conversion when checking the tag of the
	designated object, to prevent spurious semantic errors when the
	expression in the conversion has an untagged type (for example
	an address attribute).

From-SVN: r251757

2017-09-06  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/82078
gcc/
	* tree-sra.c (sort_and_splice_var_accesses): Move call to
	add_access_to_work_queue...
	(build_accesses_from_assign): ...here.
	(propagate_all_subaccesses): Make sure racc is the group
	representative, if there is one.

gcc/testsuite/
	* gcc.dg/tree-ssa/pr82078.c: New test.

From-SVN: r251756

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_res.adb (Resolve_Entry_Call): Check whether a protected
	operation is subject to a pragma Eliminate.

2017-09-06  Ed Schonberg  <schonberg@adacore.com>

	* sem_elim.ads, exp_ch4.adb: Minor reformatting.

2017-09-06  Eric Botcazou  <ebotcazou@adacore.com>

	* fe.h (Eliminate_Error_Msg): Remove.

From-SVN: r251755

	PR middle-end/82095
	* varasm.c (categorize_decl_for_section): Use SECCAT_TBSS for TLS vars with
	NULL DECL_INITIAL.

	* gcc.dg/tls/pr82095.c: New test.

From-SVN: r251754

	* gimple-ssa-strength-reduction.c
	(find_candidates_dom_walker::before_doom_children): Use a
	type and not a mode check.

From-SVN: r251753

2017-09-06  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR target/77308
        * config/arm/predicates.md (arm_general_adddi_operand): Create new
        non-vfp predicate.
        * config/arm/arm.md (*arm_adddi3, *arm_subdi3): Use new predicates.

From-SVN: r251752

	PR tree-optimization/64910
	* tree-ssa-reassoc.c (reassociate_bb): Restrict last change to
	cases where we have 3 or more operands.

From-SVN: r251751

From-SVN: r251750

	PR middle-end/81768
	* omp-low.c (lower_omp_for): Recompute tree invariant if
	gimple_omp_for_initial/final is ADDR_EXPR.

	* gcc.dg/gomp/pr81768-2.c: New test.

From-SVN: r251742

	PR middle-end/81768
	* omp-expand.c (expand_omp_simd): Force second operands of COND_EXPR
	into gimple val before gimplification fo the COND_EXPR.

	* gcc.dg/gomp/pr81768-1.c: New test.

From-SVN: r251741

	* tree-ssa-threadupdate.c (duplicate_thread_path): Remove unused
	REGION_COPY argument.
	(thread_through_all_blocks): Remove unused argument to
	duplicate_thread_path.

From-SVN: r251740

	* name-lookup.c (do_class_using_decl): Elide read-once temps.
	Move declarations to initializations.

From-SVN: r251738

	* class.c (add_method): Move slot search and insertion to ...
	* name-lookup.c (get_method_slot): ... this new function.
	(lookup_fnfields_slot_nolazy): Cope with NULL slot.
	* name-lookup.h (get_method_slot): Declare.
	* decl.c (cxx_init_decl_processinng): Give conv_op_marker a more
	realistic type.
	(grok_special_member_properties): Set
	TYPE_HAS_CONVERSION. Expicitly look at DECL_NAME for specialness.
	Improve TYPE_HAS_CONSTEXPR_CTOR setting.

From-SVN: r251737

Similar to the previous scalar_int_mode patch.

2017-09-05  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* config/aarch64/aarch64-protos.h (aarch64_gen_adjusted_ldpstp):
	Take a scalar_mode rather than a machine_mode.
	(aarch64_operands_adjust_ok_for_ldpstp): Likewise.
	* config/aarch64/aarch64.c (aarch64_simd_container_mode): Likewise.
	(aarch64_operands_adjust_ok_for_ldpstp): Likewise.
	(aarch64_gen_adjusted_ldpstp): Likewise.
	(aarch64_expand_vector_init): Use scalar_mode instead of machine_mode.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r251736

This patch makes the AArch64 port use scalar_int_mode in various places.
Other ports won't need this kind of change; we only need it for AArch64
because of the variable-sized SVE modes.

The only change in functionality is in the rtx_costs handling
of CONST_INT.  If the caller doesn't supply a mode, we now pass
word_mode rather than VOIDmode to aarch64_internal_mov_immediate.
aarch64_movw_imm will therefore not now truncate large constants
in this situation.

2017-09-05  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* config/aarch64/aarch64-protos.h (aarch64_is_extend_from_extract):
	Take a scalar_int_mode instead of a machine_mode.
	(aarch64_mask_and_shift_for_ubfiz_p): Likewise.
	(aarch64_output_scalar_simd_mov_immediate): Likewise.
	(aarch64_simd_scalar_immediate_valid_for_move): Likewise.
	(aarch64_simd_attr_length_rglist): Delete.
	* config/aarch64/aarch64.c (aarch64_is_extend_from_extract): Take
	a scalar_int_mode instead of a machine_mode.
	(aarch64_add_offset): Likewise.
	(aarch64_internal_mov_immediate): Likewise
	(aarch64_add_constant_internal): Likewise.
	(aarch64_add_constant): Likewise.
	(aarch64_movw_imm): Likewise.
	(aarch64_rtx_arith_op_extract_p): Likewise.
	(aarch64_mask_and_shift_for_ubfiz_p): Likewise.
	(aarch64_simd_scalar_immediate_valid_for_move): Likewise.
	Remove assert that the mode isn't a vector.
	(aarch64_output_scalar_simd_mov_immediate): Likewise.
	(aarch64_expand_mov_immediate): Update calls after above changes.
	(aarch64_output_casesi): Use as_a <scalar_int_mode>.
	(aarch64_and_bitmask_imm): Check for scalar integer modes.
	(aarch64_move_imm): Likewise.
	(aarch64_can_const_movi_rtx_p): Likewise.
	(aarch64_strip_extend): Likewise.
	(aarch64_extr_rtx_p): Likewise.
	(aarch64_rtx_costs): Likewise, using wode_mode as the mode of
	a CONST_INT when the mode parameter is VOIDmode.
	(aarch64_float_const_rtx_p): Use scalar_int_mode for a temporary.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r251735

	* cp-tree.h (lang_decl_base): Rename template_conv_p to
	unknown_bound_p.
	(DECL_CONV_FN_P): Don't check NULL DECL_NAME.
	(DECL_CONV_FN_TYPE): FN must be conv op.
	(DECL_TEMPLATE_CONV_FN_P): Delete.
	(VAR_HAD_UNKNOWN_BOUND, SET_VAR_HAD_UNKNOWN_BOUND): Adjust.
	* pt.c (push_template_decl_real): Delete DECL_TEMPLATE_CONV_FN_P

From-SVN: r251734

2017-09-05  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* machmode.h (bitwise_mode_for_mode): Return opt_mode.
	* stor-layout.c (bitwise_mode_for_mode): Likewise.
	(bitwise_type_for_mode): Update accordingly.

From-SVN: r251733

...for consistency with mode_for_size

2017-09-05  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* stor-layout.h (mode_for_size_tree): Return an opt_mode.
	* stor-layout.c (mode_for_size_tree): Likewise.
	(mode_for_array): Update accordingly.
	(layout_decl): Likewise.
	(compute_record_mode): Likewise.  Only set the mode once.

gcc/ada/
	* gcc-interface/utils.c (make_packable_type): Update call to
	mode_for_size_tree.

From-SVN: r251732

...for consistency with mode_for_vector.

2017-09-05  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* target.def (get_mask_mode): Change return type to opt_mode.
	Expand commentary.
	* doc/tm.texi: Regenerate.
	* targhooks.h (default_get_mask_mode): Return an opt_mode.
	* targhooks.c (default_get_mask_mode): Likewise.
	* config/i386/i386.c (ix86_get_mask_mode): Likewise.
	* optabs-query.c (can_vec_mask_load_store_p): Update use of
	targetm.get_mask_mode.
	* tree.c (build_truth_vector_type): Likewise.

From-SVN: r251731

...following on from the mode_for_size change.  The patch also removes
machmode.h versions of the stor-layout.c comments, since the comments
in the .c file are more complete.

2017-09-05  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* machmode.h (mode_for_vector): Return an opt_mode.
	* stor-layout.c (mode_for_vector): Likewise.
	(mode_for_int_vector): Update accordingly.
	(layout_type): Likewise.
	* config/i386/i386.c (emit_memmov): Likewise.
	(ix86_expand_set_or_movmem): Likewise.
	(ix86_expand_vector_init): Likewise.
	(ix86_get_mask_mode): Likewise.
	* config/powerpcspe/powerpcspe.c (rs6000_expand_vec_perm_const_1):
	Likewise.
	* config/rs6000/rs6000.c (rs6000_expand_vec_perm_const_1): Likewise.
	* expmed.c (extract_bit_field_1): Likewise.
	* expr.c (expand_expr_real_2): Likewise.
	* optabs-query.c (can_vec_perm_p): Likewise.
	(can_vec_mask_load_store_p): Likewise.
	* optabs.c (expand_vec_perm): Likewise.
	* targhooks.c (default_get_mask_mode): Likewise.
	* tree-vect-stmts.c (vectorizable_store): Likewise.
	(vectorizable_load): Likewise.
	(get_vectype_for_scalar_type_and_size): Likewise.

From-SVN: r251730

There are at least a few places that want to create an integer vector
with a specified element size and element count, or to create the
integer equivalent of an existing mode.  This patch adds helpers
for doing that.

The require ()s are all used in functions that go on to emit
instructions that use the result as a vector mode.

2017-09-05  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* machmode.h (mode_for_int_vector): New function.
	* stor-layout.c (mode_for_int_vector): Likewise.
	* config/aarch64/aarch64.c (aarch64_emit_approx_sqrt): Use it.
	* config/powerpcspe/powerpcspe.c (rs6000_do_expand_vec_perm): Likewise.
	* config/rs6000/rs6000.c (rs6000_do_expand_vec_perm): Likewise.
	* config/s390/s390.c (s390_expand_vec_compare_cc): Likewise.
	(s390_expand_vcond): Likewise.

From-SVN: r251729

...to make it consistent with int_mode_for_size etc.

require () seems like the right choice in replace_reg_with_saved_mem
because we use the chosen mode for saving and restoring registers,
which cannot be done in BLKmode.  Similarly require () seems like
the right choice in calls related to secondary memory reloads (the ones
in config/, and in get_secondary_mem) because the reload must always
have a defined mode, which e.g. determines the size of the slot.

We can use require () in simplify_subreg_concatn and assemble_integer
because it isn't meaningful to create a subreg with BLKmode (for one
thing, we couldn't tell then whether it was partial, paradoxical, etc.).

make_fract_type and make_accum_type must find a mode because that's
what distinguishes accumulator FIXED_POINT_TYPEs from fractional
FIXED_POINT_TYPEs.

2017-09-05  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* machmode.h (opt_machine_mode): New type.
	(opt_mode<T>): Allow construction from anything that can be
	converted to a T.
	(is_a, as_a, dyn_cast): Add overloads for opt_mode.
	(mode_for_size): Return an opt_machine_mode.
	* stor-layout.c (mode_for_size): Likewise.
	(mode_for_size_tree): Update call accordingly.
	(bitwise_mode_for_mode): Likewise.
	(make_fract_type): Likewise.
	(make_accum_type): Likewise.
	* caller-save.c (replace_reg_with_saved_mem): Update call
	accordingly.
	* config/alpha/alpha.h (SECONDARY_MEMORY_NEEDED_MODE): Likewise.
	* config/i386/i386.h (SECONDARY_MEMORY_NEEDED_MODE): Likewise.
	* config/s390/s390.h (SECONDARY_MEMORY_NEEDED_MODE): Likewise.
	* config/sparc/sparc.h (SECONDARY_MEMORY_NEEDED_MODE): Likewise.
	* expmed.c (extract_bit_field_1): Likewise.
	* reload.c (get_secondary_mem): Likewise.
	* varasm.c (assemble_integer): Likewise.
	* lower-subreg.c (simplify_subreg_concatn): Likewise.  Move
	early-out.

From-SVN: r251728