/cp
2017-09-05  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/81942
	* cp-tree.h (LABEL_DECL_CDTOR): Add and document.
	* decl.c (start_preparsed_function): Set LABEL_DECL_CDTOR when
	creating cdtor_label.
	* constexpr.c (returns): Add the case of a constructor/destructor
	returning via a LABEL_DECL_CDTOR label.
	(cxx_eval_constant_expression, case [GOTO_EXPR]): Likewise.

/testsuite
2017-09-05  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/81942
	* g++.dg/cpp1y/constexpr-return3.C: New.

From-SVN: r251714

This patch improves alloca alignment.  Currently alloca reserves
too much space as it aligns twice, and generates unnecessary stack
alignment code.

When the requested alignment is lower than the stack alignment, no
extra alignment is needed.  If the requested alignment is higher,
we need to increase the size by the difference of the requested 
alignment and the stack alignment.  As a result, the alloca alignment
is exactly as expected:

alloca (16):
	sub	sp, sp, #16
	mov	x1, sp

alloca (x):
	add	x0, x0, 15
	and	x0, x0, -16
	sub	sp, sp, x0
	mov	x0, sp

__builtin_alloca_with_align (x, 512):
	add	x0, x0, 63
	and	x0, x0, -16
	sub	sp, sp, x0
	add	x0, sp, 63
	and	x0, x0, -64

    gcc/
	* explow.c (get_dynamic_stack_size): Improve dynamic alignment.

From-SVN: r251713

2017-09-05  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82084
	* fold-const.c (can_native_encode_string_p): Handle wide characters.

From-SVN: r251711

	PR ada/62235
	* gcc-interface/decl.c (gnat_to_gnu_entity): Skip regular processing
	for Itypes that are E_Record_Subtype with a cloned subtype.
	<E_Record_Subtype>: Use the DECL of the cloned type directly, if any.

From-SVN: r251706

trans.c (convert_with_check): Use a custom base type if the base type of the expression has a different...

	* gcc-interface/trans.c (convert_with_check): Use a custom base type
	if the base type of the expression has a different machine mode.
	Rename a couple of parameters and local variable.

From-SVN: r251705

	* gcc-interface/trans.c (Attribute_to_gnu) <Attr_Address>: Do not strip
	conversions around prefixes that are not references.

From-SVN: r251704

	* gcc-interface/utils.c (unchecked_convert): When the result type is a
	non-biased integral type with size 0, set the result to 0 directly.

From-SVN: r251701

	* gcc-interface/gigi.h (renaming_from_generic_instantiation_p): Turn to
	(renaming_from_instantiation_p): ...this.
	* gcc-interface/decl.c (gnat_to_gnu_entity): Use inline predicate
	instead of explicit tests on kind of entities.  Adjust for renaming.
	(gnat_to_gnu_profile_type): Likewise.
	(gnat_to_gnu_subprog_type): Likewise.
	* gcc-interface/trans.c (Identifier_to_gnu): Likewise.
	(Case_Statement_to_gnu): Likewise.
	(gnat_to_gnu): Likewise.
	(process_freeze_entity): Likewise.
	(process_type): Likewise.
	(add_stmt_with_node): Adjust for renaming.
	* gcc-interface/utils.c (gnat_pushdecl): Adjust for renaming.
	(renaming_from_generic_instantiation_p): Rename to...
	(renaming_from_instantiation_p): ...this.  Use inline predicate.
	(pad_type_hasher::keep_cache_entry): Fold.

From-SVN: r251700

	* gcc-interface/trans.c (adjust_for_implicit_deref): New function.
	(gnat_to_gnu) <N_Explicit_Dereference>: Translate result type first.
	(N_Indexed_Component): Invoke adjust_for_implicit_deref on the prefix.
	(N_Slice): Likewise.
	(N_Selected_Component): Likewise.  Do not try again to translate it.
	(N_Free_Statement): Invoke adjust_for_implicit_deref on the expression.

From-SVN: r251699

	* repinfo.ads: Document new treatment of dynamic values.
	(TCode): Bump upper bound to 29.
	(Dynamic_Val): New constant set to 29.
	* repinfo.adb (Print_Expr) <Dynamic_Val>: New case.
	(Rep_Value)  <Dynamic_Val>: Likewise.
	* repinfo.h (Dynamic_Val): New macro.
	* gcc-interface/decl.c (annotate_value): Tidy up and cache result for
	DECL_P nodes too.
	<INTEGER_CST>: Set TCODE instead of recursing.
	<COMPONENT_REF>: Set TCODE instead of calling Create_Node manually.
	<VAR_DECL>: New case.
	<MULT_EXPR, PLUS_EXPR>: Fold conversions into inner operations.
	<BIT_AND_EXPR>: Adjust.
	<CALL_EXPR>: Do not fall through.

From-SVN: r251698

	* gcc-interface/trans.c (Call_to_gnu): If this is a function call and
	there is no target, do not create a temporary for the return value for
	an allocator either.

From-SVN: r251695

re PR tree-optimization/82102 (ICE: Segmentation fault in /home/arnd/git/gcc/gcc/tree-ssa-pre.c:4863)

2017-09-05  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82102
	* tree-ssa-pre.c (fini_eliminate): Check if lhs is NULL.

	* gcc.dg/torture/pr82102.c: New testcase.

From-SVN: r251692

	* gcc-interface/trans.c (pos_to_constructor): Skip conversions to an
	unconstrained array type.

From-SVN: r251691

2017-09-05  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/82032
	* tree-cfg.c (generate_range_test): New function.
	* tree-cfg.h (generate_range_test): Declared here.
	* tree-cfgcleanup.c (convert_single_case_switch): New function.
	(cleanup_control_expr_graph): Use it.
	* tree-switch-conversion.c (try_switch_expansion): Remove
	assert.
	(emit_case_nodes): Use generate_range_test.
2017-09-05  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/82032
	* g++.dg/other/pr82032.C: New test.
	* gcc.dg/tree-ssa/pr68198.c: Update scanned pattern.
	* gcc.dg/tree-ssa/vrp34.c: Likewise.
	* gcc.dg/switch-10.c: Likewise.

From-SVN: r251690

From-SVN: r251689

	* gcc.target/i386/mpx/mpx-os-support.h: New file.
	* gcc.target/i386/mpx/mpx-check.h: Include mpx-os-support.h.

From-SVN: r251683

re PR target/82098 (internal compiler error: in elimination_costs_in_insn, at reload1.c:3616, -march=i686)

	PR target/82098
	* config/i386/i386.md (*<btsc><mode>_mask): Add
	TARGET_USE_BT to insn constraint.
	(*btr<mode>_mask): Ditto.

From-SVN: r251682

Fix the ldrd offsets of Thumb-2 - for TARGET_LDRD the range is +-1020,
without -252..4096.  This reduces the number of addressing instructions
when using DI mode operations (such as in PR77308).

    gcc/
	* config/arm/arm.c (arm_legitimate_index_p): Add comment.
	(thumb2_legitimate_index_p): Use correct range for DI/DF mode.

From-SVN: r251681

2017-09-04  Daniel Kruegler  <daniel.kruegler@gmail.com>

	PR libstdc++/79162
	Implement LWG 2946, LWG 2758's resolution missed further corrections
	* include/bits/basic_string.h (basic_string::compare): Add missing
	required noexcept specifications.
	(basic_string): Introduce internal _S_to_string_view and __sv_wrapper
	for implicit string_view conversion.
	(basic_string::basic_string): Fix explicit string_view conversion by
	implicit conversion using _S_to_string_view and __sv_wrapper.
	(basic_string): Introduce internal basic_string(__sv_wrapper, Alloc)
	constructor.
	(basic_string): Fix operator=(T) template by operator=(const T&)
	template for uncopyable types (PR 79162).
	(basic_string::operator+=, basic_string::append, basic_string::assign)
	(basic_string::insert, basic_string::replace, basic_string::find)
	(basic_string::rfind, basic_string::find_first_of)
	(basic_string::find_last_of, basic_string::find_first_not_of)
	(basic_string::find_last_not_of, basic_string::compare): Replace
	__sv_type argument by template const T& (LWG 2946) and correct
	documentation describing __sv_type argument.
	(basic_string::find, basic_string::rfind, basic_string::find_first_of)
	(basic_string::find_last_of, basic_string::find_first_not_of)
	(basic_string::find_last_not_of, basic_string::compare): Replace
	unconditional noexcept specification by conditional noexcept
	specification to partially balance the removal of noexcept by LWG 2946.
	* testsuite/21_strings/basic_string/79162.cc: New.
	* testsuite/21_strings/basic_string/lwg2946.cc: New.

From-SVN: r251664

2017-09-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR target/77308
        * config/arm/arm.md (*arm_adddi3, *arm_subdi3): Split early except for
        TARGET_NEON and TARGET_IWMMXT.
        (anddi3, iordi3, xordi3, one_cmpldi2): Split while expanding except for
        TARGET_NEON and TARGET_IWMMXT.
        (*one_cmpldi2_insn): Moved the body of one_cmpldi2 here.

testsuite:
2017-09-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR target/77308
        * gcc.target/arm/pr77308-1.c: New test.

From-SVN: r251663

	(ix86_rewrite_tls_address): Ditto.
	* config/i386/i386.c (ix86_tls_address_pattern_p) New function.
	(ix86_rewrite_tls_address_1): Ditto.
	(ix86_rewrite_tls_address): Ditto.
	* config/i386/predicates.md (tls_address_pattern): New predicate.
	* config/i386/i386.md (TLS address splitter): New splitter.

From-SVN: r251662

2017-09-04  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82084
	* fold-const.h (can_native_encode_string_p): Declare.
	* fold-const.c (can_native_encode_string_p): Factor out from ...
	(native_encode_string): ... here.
	* tree-vect-stmts.c (vectorizable_store): Call it to avoid
	vectorizing stores from constants we later cannot handle.

	* g++.dg/torture/pr82084.C: New testcase.

From-SVN: r251661

	PR c/81783
	* c-warn.c (warn_tautological_bitwise_comparison): New function.
	(warn_tautological_cmp): Call it.

	* doc/invoke.texi: Update -Wtautological-compare documentation.

	* c-c++-common/Wtautological-compare-5.c: New test.

From-SVN: r251660

2017-09-03  Jeff Law  <law@redhat.com>

	PR tree-optimization/64910
	* tree-ssa-reassoc.c (reassociate_bb): For bitwise binary ops,
	swap the first and last operand if the last is a constant.

	PR tree-optimization/64910
	* gcc.dg/tree-ssa/pr64910-2.c: New test.

From-SVN: r251659

	PR sanitizer/82072
	* convert.c (do_narrow): When sanitizing signed integer overflows,
	bail out for signed types.
	(convert_to_integer_1) <case NEGATE_EXPR>: Likewise.

	* c-c++-common/ubsan/pr82072.c: New test.

From-SVN: r251651

2017-09-04  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82060
	* tree-ssa-pre.c (eliminate_dom_walker::before_dom_children):
	Move devirtualization after stmt folding and before EH/AB/noreturn
	cleanup to get the stmt refs canonicalized.  Use a bool instead
	of gimple_modified_p since that doesn't work for NOPs.  Schedule
	NOPs generated by folding for removal.

	* g++.dg/torture/pr82060.C: New testcase.

From-SVN: r251650

This involved renaming the rather general-sounding "enum direction" to
"enum pad_direction" to avoid a conflict with the Fortran frontend.

2017-09-04  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* coretypes.h (pad_direction): New enum.
	* defaults.h (DEFAULT_FUNCTION_ARG_PADDING): Delete.
	(FUNCTION_ARG_PADDING): Likewise.
	* target.def (function_arg_padding): New hook.
	* targhooks.h (default_function_arg_padding): Declare.
	* targhooks.c (default_function_arg_padding): New function.
	* doc/tm.texi.in (FUNCTION_ARG_PADDING): Replace with...
	(TARGET_FUNCTION_ARG_PADDING): ...this.
	* doc/tm.texi: Regenerate.
	* calls.c (store_unaligned_arguments_into_pseudos): Use pad_direction
	instead of direction.
	(compute_argument_addresses): Likewise.
	(load_register_parameters): Likewise.
	(emit_library_call_value_1): Likewise.
	(store_one_arg): Use targetm.calls.function_arg_padding instead
	of FUNCTION_ARG_PADDING.
	(must_pass_in_stack_var_size_or_pad): Likewise.
	* expr.c (emit_group_load_1): Use pad_direction instead of direction.
	(emit_group_store): Likewise.
	(emit_single_push_insn_1): Use targetm.calls.function_arg_padding
	instead of FUNCTION_ARG_PADDING.
	(emit_push_insn): Likewise, and propagate enum change throughout
	function.
	* function.h (direction): Delete.
	(locate_and_pad_arg_data::where_pad): Use pad_direction instead
	of direction.
	* function.c (assign_parm_find_stack_rtl): Likewise.
	(assign_parm_setup_block_p): Likewise.
	(assign_parm_setup_block): Likewise.
	(gimplify_parameters): Likewise.
	(locate_and_pad_parm): Use targetm.calls.function_arg_padding
	instead of FUNCTION_ARG_PADDING, and propagate enum change throughout
	function.
	* config/aarch64/aarch64.h (FUNCTION_ARG_PADDING): Delete.
	(BLOCK_REG_PADDING): Use pad_direction instead of direction.
	* config/aarch64/aarch64-protos.h (aarch64_pad_arg_upward): Delete.
	* config/aarch64/aarch64.c (aarch64_pad_arg_upward): Replace with...
	(aarch64_function_arg_padding): ...this new function.
	(aarch64_gimplify_va_arg_expr): Use pad_direction instead of direction.
	(TARGET_FUNCTION_ARG_PADDING): Redefine.
	* config/arm/arm.h (FUNCTION_ARG_PADDING): Delete.
	(BLOCK_REG_PADDING): Use pad_direction instead of direction.
	* config/arm/arm-protos.h (arm_pad_arg_upward): Delete.
	* config/arm/arm.c (TARGET_FUNCTION_ARG_PADDING): Redefine.
	(arm_pad_arg_upward): Replace with...
	(arm_function_arg_padding): ...this new function.
	* config/c6x/c6x.h (BLOCK_REG_PADDING): Use pad_direction instead
	of direction.
	* config/ia64/hpux.h (FUNCTION_ARG_PADDING): Delete.
	* config/ia64/ia64-protos.h (ia64_hpux_function_arg_padding): Delete.
	* config/ia64/ia64.c (TARGET_FUNCTION_ARG_PADDING): Redefine.
	(ia64_hpux_function_arg_padding): Replace with...
	(ia64_function_arg_padding): ...this new function.  Use pad_direction
	instead of direction.  Check for TARGET_HPUX.
	* config/iq2000/iq2000.h (FUNCTION_ARG_PADDING): Delete.
	* config/iq2000/iq2000.c (TARGET_FUNCTION_ARG_PADDING): Redefine.
	(iq2000_function_arg_padding): New function.
	* config/mips/mips-protos.h (mips_pad_arg_upward): Delete.
	* config/mips/mips.c (mips_pad_arg_upward): Replace with...
	(mips_function_arg_padding): ...this new function.
	(mips_pad_reg_upward): Update accordingly.
	(TARGET_FUNCTION_ARG_PADDING): Redefine.
	* config/mips/mips.h (PAD_VARARGS_DOWN): Use
	targetm.calls.function_arg_padding.
	(FUNCTION_ARG_PADDING): Delete.
	(BLOCK_REG_PADDING): Use pad_direction instead of direction.
	* config/nios2/nios2.h (FUNCTION_ARG_PADDING): Delete.
	(PAD_VARARGS_DOWN): Use targetm.calls.function_arg_padding.
	* config/nios2/nios2-protos.h (nios2_function_arg_padding): Delete.
	(nios2_block_reg_padding): Return pad_direction instead of direction.
	* config/nios2/nios2.c (nios2_block_reg_padding): Return pad_direction
	instead of direction.
	(nios2_function_arg_padding): Likewise.  Make static.
	(TARGET_FUNCTION_ARG_PADDING): Redefine.
	* config/pa/pa.h (FUNCTION_ARG_PADDING): Delete.
	(BLOCK_REG_PADDING): Use targetm.calls.function_arg_padding.
	* config/pa/pa-protos.h (pa_function_arg_padding): Delete.
	* config/pa/pa.c (TARGET_FUNCTION_ARG_PADDING): Redefine.
	(pa_function_arg_padding): Make static.  Return pad_direction instead
	of direction.
	* config/powerpcspe/powerpcspe.h (FUNCTION_ARG_PADDING): Delete.
	(PAD_VARARGS_DOWN): Use targetm.calls.function_arg_padding.
	* config/powerpcspe/aix.h (BLOCK_REG_PADDING): Use pad_direction
	instead of direction.  Use targetm.calls.function_arg_padding.
	* config/powerpcspe/darwin.h (BLOCK_REG_PADDING): Likewise.
	* config/powerpcspe/freebsd64.h (BLOCK_REG_PADDING): Likewise.
	* config/powerpcspe/linux64.h (BLOCK_REG_PADDING): Likewise.
	* config/powerpcspe/powerpcspe-protos.h (function_arg_padding): Delete.
	* config/powerpcspe/powerpcspe.c (TARGET_FUNCTION_ARG_PADDING):
	Redefine.
	(function_arg_padding): Rename to...
	(rs6000_function_arg_padding): ...this.  Make static.  Return
	pad_direction instead of direction.
	(rs6000_return_in_msb): Use rs6000_function_arg_padding.
	* config/rs6000/rs6000.h (FUNCTION_ARG_PADDING): Delete.
	(PAD_VARARGS_DOWN): Use targetm.calls.function_arg_padding.
	* config/rs6000/aix.h (BLOCK_REG_PADDING): Use pad_direction
	instead of direction.  Use targetm.calls.function_arg_padding.
	* config/rs6000/darwin.h (BLOCK_REG_PADDING): Likewise.
	* config/rs6000/freebsd64.h (BLOCK_REG_PADDING): Likewise.
	* config/rs6000/linux64.h (BLOCK_REG_PADDING): Likewise.
	* config/rs6000/rs6000-protos.h (function_arg_padding): Delete.
	* config/rs6000/rs6000.c (TARGET_FUNCTION_ARG_PADDING): Redefine.
	(function_arg_padding): Rename to...
	(rs6000_function_arg_padding): ...this.  Make static.  Return
	pad_direction instead of direction.
	(rs6000_return_in_msb): Use rs6000_function_arg_padding.
	* config/s390/s390.h (FUNCTION_ARG_PADDING): Delete.
	* config/s390/s390.c (s390_function_arg_padding): New function.
	(TARGET_FUNCTION_ARG_PADDING): Redefine.
	* config/sparc/sparc.h (FUNCTION_ARG_PADDING): Delete.
	* config/sparc/sparc-protos.h (function_arg_padding): Delete.
	* config/sparc/sparc.c (TARGET_FUNCTION_ARG_PADDING): Redefine.
	(function_arg_padding): Rename to...
	(sparc_function_arg_padding): ...this.  Make static.  Return
	pad_direction instead of direction.
	* config/spu/spu.h (FUNCTION_ARG_PADDING): Delete.
	* config/spu/spu.c (spu_function_arg_padding): New function.
	(TARGET_FUNCTION_ARG_PADDING): Redefine.
	* system.h (FUNCTION_ARG_PADDING): Poison.

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

From-SVN: r251648

2017-09-04  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* target.def (modes_tieable_p): New hook.
	* doc/tm.texi (MODES_TIEABLE_P): Replace with...
	(TARGET_MODES_TIEABLE_P): ...this.
	* doc/tm.texi.in: Regenerate.
	* hooks.h (hook_bool_mode_mode_true): Declare.
	* hooks.c (hook_bool_mode_mode_true): New function.
	* combine.c (subst): Use targetm.modes_tieable_p instead of
	MODES_TIEABLE_P.
	* dse.c (find_shift_sequence): Likewise.
	* expmed.c (extract_low_bits): Likewise.
	* lower-subreg.c: Include target.h.
	(find_decomposable_subregs): Use targetm.modes_tieable_p instead of
	MODES_TIEABLE_P.
	* rtlanal.c (rtx_cost): Likewise.
	* config/aarch64/aarch64.h (MODES_TIEABLE_P): Delete.
	* config/aarch64/aarch64-protos.h (aarch64_modes_tieable_p): Delete.
	* config/aarch64/aarch64.c (aarch64_modes_tieable_p): Make static.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/alpha/alpha.h (MODES_TIEABLE_P): Delete.
	* config/alpha/alpha.c (alpha_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/arc/arc.h (MODES_TIEABLE_P): Delete.
	* config/arc/arc.c (TARGET_MODES_TIEABLE_P): Redefine.
	(arc_modes_tieable_p): New function.
	* config/arm/arm.h (MODES_TIEABLE_P): Delete.
	* config/arm/arm-protos.h (arm_modes_tieable_p): Delete.
	* config/arm/arm.c (TARGET_MODES_TIEABLE_P): Redefine.
	(arm_modes_tieable_p): Make static.
	* config/avr/avr.h (MODES_TIEABLE_P): Delete.
	* config/bfin/bfin.h (MODES_TIEABLE_P): Delete.
	* config/bfin/bfin.c (bfin_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/c6x/c6x.h (MODES_TIEABLE_P): Delete.
	* config/c6x/c6x.c (c6x_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/cr16/cr16.h (MODES_TIEABLE_P): Delete.
	* config/cr16/cr16.c (TARGET_MODES_TIEABLE_P): Redefine.
	(cr16_modes_tieable_p): New function.
	* config/cris/cris.h (MODES_TIEABLE_P): Delete.
	* config/epiphany/epiphany.h (MODES_TIEABLE_P): Delete.
	* config/fr30/fr30.h (MODES_TIEABLE_P): Delete.
	(TRULY_NOOP_TRUNCATION): Update comment.
	* config/frv/frv.h (MODES_TIEABLE_P): Delete.
	(TRULY_NOOP_TRUNCATION): Update comment.
	* config/frv/frv.c (TARGET_MODES_TIEABLE_P): Redefine.
	(frv_modes_tieable_p): New function.
	* config/ft32/ft32.h (MODES_TIEABLE_P): Delete.
	* config/h8300/h8300.h (MODES_TIEABLE_P): Delete.
	* config/h8300/h8300.c (h8300_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/i386/i386.h (MODES_TIEABLE_P): Delete.
	* config/i386/i386-protos.h (ix86_modes_tieable_p): Delete.
	* config/i386/i386.c (ix86_modes_tieable_p): Make static.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/ia64/ia64.h (MODES_TIEABLE_P): Delete.
	* config/ia64/ia64.c (TARGET_MODES_TIEABLE_P): Redefine.
	(ia64_modes_tieable_p): New function.
	* config/iq2000/iq2000.h (MODES_TIEABLE_P): Delete.
	* config/iq2000/iq2000.c (TARGET_MODES_TIEABLE_P): Redefine.
	(iq2000_modes_tieable_p): New function.
	* config/lm32/lm32.h (MODES_TIEABLE_P): Delete.
	* config/lm32/lm32.c (TARGET_MODES_TIEABLE_P): Redefine.
	(lm32_modes_tieable_p): New function.
	* config/m32c/m32c.h (MODES_TIEABLE_P): Delete.
	* config/m32c/m32c-protos.h (m32c_modes_tieable_p): Delete.
	* config/m32c/m32c.c (m32c_modes_tieable_p): Make static.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/m32r/m32r.h (MODES_TIEABLE_P): Delete.
	* config/m32r/m32r.c (TARGET_MODES_TIEABLE_P): Redefine.
	(m32r_modes_tieable_p): New function.
	* config/m68k/m68k.h (MODES_TIEABLE_P): Delete.
	* config/m68k/m68k.c (TARGET_MODES_TIEABLE_P): Redefine.
	(m68k_modes_tieable_p): New function.
	* config/mcore/mcore.h (MODES_TIEABLE_P): Delete.
	* config/mcore/mcore.c (TARGET_MODES_TIEABLE_P): Redefine.
	(mcore_modes_tieable_p): New function.
	* config/microblaze/microblaze.h (MODES_TIEABLE_P): Delete.
	* config/microblaze/microblaze.c (microblaze_modes_tieable_p): New
	function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/mips/mips.h (MODES_TIEABLE_P): Delete.
	* config/mips/mips-protos.h (mips_modes_tieable_p): Delete.
	* config/mips/mips.c (mips_modes_tieable_p): Make static.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/mmix/mmix.h (MODES_TIEABLE_P): Delete.
	* config/mn10300/mn10300.h (MODES_TIEABLE_P): Delete.
	* config/mn10300/mn10300-protos.h (mn10300_modes_tieable): Delete.
	* config/mn10300/mn10300.c (mn10300_modes_tieable): Rename to...
	(mn10300_modes_tieable_p): ...this and make static.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/moxie/moxie.h (MODES_TIEABLE_P): Delete.
	* config/msp430/msp430.h (MODES_TIEABLE_P): Delete.
	* config/msp430/msp430-protos.h (msp430_modes_tieable_p): Delete.
	* config/msp430/msp430.c (TARGET_MODES_TIEABLE_P): Redefine.
	(msp430_modes_tieable_p): Make static.
	* config/nds32/nds32.h (MODES_TIEABLE_P): Delete.
	* config/nds32/nds32.c (nds32_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/nios2/nios2.h (MODES_TIEABLE_P): Delete.
	* config/nvptx/nvptx.h (MODES_TIEABLE_P): Delete.
	* config/nvptx/nvptx.c (nvptx_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/pa/pa.h (MODES_TIEABLE_P): Delete.
	* config/pa/pa-protos.h (pa_modes_tieable_p): Delete.
	* config/pa/pa.c (pa_modes_tieable_p): Make static.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/pdp11/pdp11.h (MODES_TIEABLE_P): Delete.
	* config/pdp11/pdp11.c (TARGET_MODES_TIEABLE_P): Redefine.
	(pdp11_modes_tieable_p): New function.
	* config/powerpcspe/powerpcspe.h (MODES_TIEABLE_P): Delete.
	* config/powerpcspe/powerpcspe.c (TARGET_MODES_TIEABLE_P): Redefine.
	(rs6000_modes_tieable_p): New function.
	(rs6000_debug_reg_global): Use it instead of MODES_TIEABLE_P.
	* config/powerpcspe/powerpcspe.md: Update comment.
	* config/riscv/riscv.h (MODES_TIEABLE_P): Delete.
	* config/riscv/riscv.c (riscv_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/rl78/rl78.h (MODES_TIEABLE_P): Delete.
	* config/rl78/rl78.c (TARGET_MODES_TIEABLE_P): Redefine.
	(rl78_modes_tieable_p): New function.
	* config/rs6000/rs6000.h (MODES_TIEABLE_P): Delete.
	* config/rs6000/rs6000.c (TARGET_MODES_TIEABLE_P): Redefine.
	(rs6000_modes_tieable_p): New function.
	(rs6000_debug_reg_global): Use it instead of MODES_TIEABLE_P.
	* config/rs6000/rs6000.md: Update comment.
	* config/rx/rx.h (MODES_TIEABLE_P): Delete.
	* config/rx/rx.c (rx_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/s390/s390.h (MODES_TIEABLE_P): Delete.
	* config/s390/s390.c (s390_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/sh/sh.h (MODES_TIEABLE_P): Delete.
	* config/sh/sh.c (TARGET_MODES_TIEABLE_P): Redefine.
	(sh_modes_tieable_p): New function.
	* config/sparc/sparc.h (MODES_TIEABLE_P): Delete.
	* config/sparc/sparc-protos.h (sparc_modes_tieable_p): Delete.
	* config/sparc/sparc.c (TARGET_MODES_TIEABLE_P): Redefine.
	(sparc_modes_tieable_p): Make static.
	* config/spu/spu.h (MODES_TIEABLE_P): Delete.
	* config/spu/spu.c (spu_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/stormy16/stormy16.h (MODES_TIEABLE_P): Delete.
	* config/stormy16/stormy16.c (xstormy16_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/tilegx/tilegx.h (MODES_TIEABLE_P): Delete.
	* config/tilepro/tilepro.h (MODES_TIEABLE_P): Delete.
	* config/v850/v850.h (MODES_TIEABLE_P): Delete.
	* config/v850/v850.c (v850_modes_tieable_p): New function.
	(TARGET_MODES_TIEABLE_P): Redefine.
	* config/vax/vax.h (MODES_TIEABLE_P): Delete.
	* config/visium/visium.h (MODES_TIEABLE_P): Delete.
	* config/visium/visium.c (TARGET_MODES_TIEABLE_P): Redefine.
	(visium_modes_tieable_p): New function.
	* config/xtensa/xtensa.h (MODES_TIEABLE_P): Delete.
	* config/xtensa/xtensa.c (TARGET_MODES_TIEABLE_P): Redefine.
	(xtensa_modes_tieable_p): New function.
	* system.h (MODES_TIEABLE_P): Poison.

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

From-SVN: r251647

2017-09-04  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* target.def (hard_regno_mode_ok): New hook.
	* doc/tm.texi (HARD_REGNO_MODE_OK): Replace with...
	(TARGET_HARD_REGNO_MODE_OK): ...this.
	* doc/tm.texi.in: Regenerate.
	* hooks.h (hook_bool_uint_mode_true): Declare.
	* hooks.c (hook_bool_uint_mode_true): New function.
	* doc/md.texi: Refer to targetm.hard_regno_mode_ok instead of
	HARD_REGNO_MODE_OK.
	* genpreds.c (write_insn_preds_c): Add an include of target.h.
	* alias.c (init_alias_target): Use targetm.hard_regno_mode_ok
	instead of HARD_REGNO_MODE_OK.
	* caller-save.c: Include target.h.
	(reg_save_code): Use targetm.hard_regno_mode_ok instead of
	HARD_REGNO_MODE_OK.
	* combine.c (can_combine_p): Likewise.
	(combinable_i3pat): Likewise.
	(can_change_dest_mode): Likewise.
	* expr.c (init_expr_target): Likewise.
	(convert_move): Likewise.
	(convert_modes): Likewise.
	* ira.c (setup_prohibited_class_mode_regs): Likewise.
	(setup_prohibited_mode_move_regs): Likewise.
	* ira.h (target_ira): Likewise.
	* lra-assigns.c (find_hard_regno_for_1): Likewise.
	* lra-constraints.c (process_alt_operands): Likewise.
	(split_reg): Likewise.
	* recog.c (peep2_find_free_register): Likewise.
	* ree.c (combine_reaching_defs): Likewise.
	* regcprop.c (maybe_mode_change): Likewise.
	* reginfo.c (init_reg_sets_1): Likewise.
	(choose_hard_reg_mode): Likewise.
	(simplifiable_subregs): Likewise.
	* regrename.c (check_new_reg_p): Likewise.
	* reload.c (find_valid_class): Likewise.
	(find_valid_class_1): Likewise.
	(reload_inner_reg_of_subreg): Likewise.
	(push_reload): Likewise.
	(combine_reloads): Likewise.
	(find_dummy_reload): Likewise.
	(find_reloads): Likewise.
	* reload1.c (find_reg): Likewise.
	(set_reload_reg): Likewise.
	(allocate_reload_reg): Likewise.
	(choose_reload_regs): Likewise.
	(reload_adjust_reg_for_temp): Likewise.
	* rtlanal.c (subreg_size_offset_from_lsb): Likewise.
	(simplify_subreg_regno): Likewise.
	* sel-sched.c (init_regs_for_mode): Likewise.
	* varasm.c (make_decl_rtl): Likewise.
	* config/aarch64/aarch64.h (HARD_REGNO_MODE_OK): Delete.
	(MODES_TIEABLE_P): Use targetm.hard_regno_mode_ok instead of
	HARD_REGNO_MODE_OK.
	* config/aarch64/aarch64-protos.h (aarch64_hard_regno_mode_ok): Delete.
	* config/aarch64/aarch64.c (aarch64_hard_regno_mode_ok): Make static.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/alpha/alpha.h (HARD_REGNO_MODE_OK): Delete.
	* config/alpha/alpha.c (alpha_hard_regno_mode_ok): New function.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/arc/arc.h (arc_hard_regno_mode_ok): Delete.
	(arc_mode_class): Delete.
	(HARD_REGNO_MODE_OK): Delete.
	* config/arc/arc.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(arc_hard_regno_mode_ok): Rename old array to...
	(arc_hard_regno_mode_ok_modes): ...this.
	(arc_conditional_register_usage): Update accordingly.
	(arc_mode_class): Make static.
	(arc_hard_regno_mode_ok): New function.
	* config/arm/arm.h (HARD_REGNO_MODE_OK): Delete.
	* config/arm/arm-protos.h (arm_hard_regno_mode_ok): Delete.
	* config/arm/arm.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(arm_hard_regno_mode_ok): Make static.
	* config/arm/arm.md (movdi): Use targetm.hard_regno_mode_ok instead of
	HARD_REGNO_MODE_OK.
	* config/avr/avr-protos.h (avr_hard_regno_mode_ok): Delete.
	* config/avr/avr.h (HARD_REGNO_MODE_OK): Delete.
	* config/avr/avr.c (avr_hard_regno_mode_ok): Make static and
	return a bool.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/bfin/bfin-protos.h (hard_regno_mode_ok): Delete.
	* config/bfin/bfin.h (HARD_REGNO_MODE_OK): Delete.
	* config/bfin/bfin.c (hard_regno_mode_ok): Rename to...
	(bfin_hard_regno_mode_ok): ...this.  Make static and return a bool.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/bfin/predicates.md (valid_reg_operand): Use
	targetm.hard_regno_mode_ok instead of HARD_REGNO_MODE_OK.
	* config/c6x/c6x.h (HARD_REGNO_MODE_OK): Delete.
	* config/c6x/c6x.c (c6x_hard_regno_mode_ok): New function.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/cr16/cr16.h (HARD_REGNO_MODE_OK): Delete.
	* config/cr16/cr16-protos.h (cr16_hard_regno_mode_ok): Delete.
	* config/cr16/cr16.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(cr16_hard_regno_mode_ok): Make static and return a bool.
	* config/cris/cris.h (HARD_REGNO_MODE_OK): Delete.
	* config/cris/cris.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(cris_hard_regno_mode_ok): New function.
	* config/epiphany/epiphany.h (epiphany_hard_regno_mode_ok): Delete.
	(epiphany_mode_class): Delete.
	(HARD_REGNO_MODE_OK): Delete.
	* config/epiphany/epiphany-protos.h (hard_regno_mode_ok): Delete.
	* config/epiphany/epiphany.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(hard_regno_mode_ok): Rename to...
	(epiphany_hard_regno_mode_ok): ...this.  Make static and return a bool.
	* config/fr30/fr30.h (HARD_REGNO_MODE_OK): Delete.
	* config/fr30/fr30.md: Refer to targetm.hard_regno_mode_ok instead of
	HARD_REGNO_MODE_OK.
	* config/frv/frv.h (HARD_REGNO_MODE_OK): Delete.
	* config/frv/frv-protos.h (frv_hard_regno_mode_ok): Delete.
	* config/frv/frv.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(frv_hard_regno_mode_ok): Make static and return a bool.
	* config/frv/frv.md: Refer to targetm.hard_regno_mode_ok instead of
	HARD_REGNO_MODE_OK.
	* config/ft32/ft32.h (HARD_REGNO_MODE_OK): Delete.
	* config/h8300/h8300.h (HARD_REGNO_MODE_OK): Delete.
	* config/h8300/h8300-protos.h (h8300_hard_regno_mode_ok): Delete.
	* config/h8300/h8300.c (h8300_hard_regno_mode_ok): Make static
	and return a bool.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/i386/i386.h (HARD_REGNO_MODE_OK): Delete.
	* config/i386/i386-protos.h (ix86_hard_regno_mode_ok): Delete.
	* config/i386/i386.c (ix86_hard_regno_mode_ok): Make static and
	return a bool.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/ia64/ia64.h (HARD_REGNO_MODE_OK): Delete.
	* config/ia64/ia64.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(ia64_hard_regno_mode_ok): New function.
	* config/iq2000/iq2000.h (HARD_REGNO_MODE_OK): Delete.
	* config/iq2000/iq2000.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(iq2000_hard_regno_mode_ok): New function.
	* config/lm32/lm32.h (HARD_REGNO_MODE_OK): Delete.
	* config/lm32/lm32.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(lm32_hard_regno_mode_ok): New function.
	* config/m32c/m32c.h (HARD_REGNO_MODE_OK): Delete.
	* config/m32c/m32c-protos.h (m32c_hard_regno_ok): Delete.
	* config/m32c/m32c.c (class_can_hold_mode): Use m32c_hard_regno_mode_ok
	instead of HARD_REGNO_MODE_OK.
	(m32c_hard_regno_ok): Rename to...
	(m32c_hard_regno_mode_ok): ...this.  Make static and return a bool.
	(m32c_cannot_change_mode_class): Update accordingly.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/m32r/m32r.h (m32r_hard_regno_mode_ok): Delete.
	(m32r_mode_class): Delete.
	(HARD_REGNO_MODE_OK): Delete.
	* config/m32r/m32r.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(m32r_hard_regno_mode_ok): Rename to...
	(m32r_hard_regno_modes): ...this.
	(m32r_mode_class): Make static.
	(m32r_hard_regno_mode_ok): New function.
	* config/m68k/m68k.h (HARD_REGNO_MODE_OK): Delete.
	* config/m68k/m68k-protos.h (m68k_regno_mode_ok): Delete.
	* config/m68k/m68k.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(m68k_hard_regno_mode_ok): Make static.
	* config/mcore/mcore.h (HARD_REGNO_MODE_OK): Delete.
	* config/mcore/mcore.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(mcore_hard_regno_mode_ok): New function.
	* config/microblaze/microblaze.h (microblaze_hard_regno_mode_ok)
	(HARD_REGNO_MODE_OK): Delete.
	* config/microblaze/microblaze.c (microblaze_hard_regno_mode_ok):
	Rename to...
	(microblaze_hard_regno_mode_ok_p): ...this and make static.
	(microblaze_hard_regno_mode_ok): New function.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/mips/mips.h (HARD_REGNO_MODE_OK): Delete.
	(mips_hard_regno_mode_ok): Delete.
	* config/mips/mips.c (mips_hard_regno_mode_ok): Rename to...
	(mips_hard_regno_mode_ok_p): ...this and make static.
	(mips_hard_regno_mode_ok_p): Rename to...
	(mips_hard_regno_mode_ok_uncached): ...this.
	(mips_hard_regno_mode_ok): New function.
	(mips_class_max_nregs): Use mips_hard_regno_mode_ok instead
	of HARD_REGNO_MODE_OK.
	(mips_option_override): Update after above name changes.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/mmix/mmix.h (HARD_REGNO_MODE_OK): Delete.
	* config/mn10300/mn10300.h (HARD_REGNO_MODE_OK): Delete.
	* config/mn10300/mn10300-protos.h (mn10300_hard_regno_mode_ok): Delete.
	* config/mn10300/mn10300.c (mn10300_hard_regno_mode_ok): Make static.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/moxie/moxie.h (HARD_REGNO_MODE_OK): Delete.
	* config/msp430/msp430.h (HARD_REGNO_MODE_OK): Delete.
	* config/msp430/msp430-protos.h (msp430_hard_regno_mode_ok): Delete.
	* config/msp430/msp430.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(msp430_hard_regno_mode_ok): Make static and return a bool.
	* config/nds32/nds32.h (HARD_REGNO_MODE_OK): Delete.
	* config/nds32/nds32-protos.h (nds32_hard_regno_mode_ok): Delete.
	* config/nds32/nds32.c (nds32_hard_regno_mode_ok): Make static
	and return a bool.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/nios2/nios2.h (HARD_REGNO_MODE_OK): Delete.
	* config/nvptx/nvptx.h (HARD_REGNO_MODE_OK): Delete.
	* config/pa/pa.h (MODES_TIEABLE_P): Update commentary.
	* config/pa/pa32-regs.h (HARD_REGNO_MODE_OK): Rename to...
	(PA_HARD_REGNO_MODE_OK): ...this
	* config/pa/pa64-regs.h (HARD_REGNO_MODE_OK): Rename to...
	(PA_HARD_REGNO_MODE_OK): ...this.
	* config/pa/pa.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(pa_hard_regno_mode_ok): New function.
	* config/pdp11/pdp11.h (HARD_REGNO_MODE_OK): Delete.
	* config/pdp11/pdp11.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(pdp11_hard_regno_mode_ok): New function.
	* config/powerpcspe/powerpcspe.h (HARD_REGNO_MODE_OK): Delete.
	* config/powerpcspe/powerpcspe-protos.h (rs6000_hard_regno_mode_ok_p):
	Delete.
	* config/powerpcspe/powerpcspe.c (rs6000_hard_regno_mode_ok_p):
	Make static.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	(rs6000_hard_regno_mode_ok): Rename to...
	(rs6000_hard_regno_mode_ok_uncached): ...this.
	(rs6000_init_hard_regno_mode_ok): Update accordingly.
	(rs6000_hard_regno_mode_ok): New function.
	* config/riscv/riscv.h (HARD_REGNO_MODE_OK): Delete.
	* config/riscv/riscv-protos.h (riscv_hard_regno_mode_ok_p): Delete.
	* config/riscv/riscv.c (riscv_hard_regno_mode_ok_p): Rename to...
	(riscv_hard_regno_mode_ok): ...this and make static.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/rl78/rl78.h (HARD_REGNO_MODE_OK): Delete.
	* config/rl78/rl78-protos.h (rl78_hard_regno_mode_ok): Delete.
	* config/rl78/rl78.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(rl78_hard_regno_mode_ok): Make static and return bool.
	* config/rs6000/rs6000.h (HARD_REGNO_MODE_OK): Delete.
	* config/rs6000/rs6000-protos.h (rs6000_hard_regno_mode_ok_p):
	Delete.
	* config/rs6000/rs6000.c (rs6000_hard_regno_mode_ok_p): Make static.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	(rs6000_hard_regno_mode_ok): Rename to...
	(rs6000_hard_regno_mode_ok_uncached): ...this.
	(rs6000_init_hard_regno_mode_ok): Update accordingly.
	(rs6000_hard_regno_mode_ok): New function.
	* config/rx/rx.h (HARD_REGNO_MODE_OK): Delete.
	* config/rx/rx.c (rx_hard_regno_mode_ok): New function.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/s390/s390.h (HARD_REGNO_MODE_OK): Delete.
	* config/s390/s390-protos.h (s390_hard_regno_mode_ok): Delete.
	* config/s390/s390.c (s390_hard_regno_mode_ok): Make static.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/sh/sh.h (HARD_REGNO_MODE_OK): Delete.
	* config/sh/sh-protos.h (sh_hard_regno_mode_ok): Delete.
	* config/sh/sh.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(sh_hard_regno_mode_ok): Make static.
	* config/sparc/constraints.md: Refer to targetm.hard_regno_mode_ok
	instead of HARD_REGNO_MODE_OK.
	* config/sparc/sparc.h (hard_regno_mode_classes): Delete.
	(sparc_mode_class): Delete.
	(HARD_REGNO_MODE_OK): Delete.
	* config/sparc/sparc.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(hard_regno_mode_classes): Make static.
	(sparc_mode_class): Likewise.
	(sparc_hard_regno_mode_ok): New function.
	* config/spu/spu.h (HARD_REGNO_MODE_OK): Delete.
	* config/stormy16/stormy16.h (HARD_REGNO_MODE_OK): Delete.
	* config/stormy16/stormy16.c (xstormy16_hard_regno_mode_ok): New
	function.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/tilegx/tilegx.h (HARD_REGNO_MODE_OK): Delete.
	* config/tilepro/tilepro.h (HARD_REGNO_MODE_OK): Delete.
	* config/v850/v850.h (HARD_REGNO_MODE_OK): Delete.
	* config/v850/v850.c (v850_hard_regno_mode_ok): New function.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	* config/vax/vax.h (HARD_REGNO_MODE_OK): Delete.
	* config/visium/visium.h (HARD_REGNO_MODE_OK): Delete.
	* config/visium/visium.c (TARGET_HARD_REGNO_MODE_OK): Redefine.
	(visium_hard_regno_mode_ok): New function.
	* config/visium/visium.md: Refer to targetm.hard_regno_mode_ok
	instead of HARD_REGNO_MODE_OK.
	* config/xtensa/xtensa.h (xtensa_hard_regno_mode_ok): Delete.
	(HARD_REGNO_MODE_OK): Delete.
	* config/xtensa/xtensa.c (xtensa_hard_regno_mode_ok): Rename to...
	(xtensa_hard_regno_mode_ok_p): ...this and make static.
	(xtensa_option_override): Update accordingly.
	(TARGET_HARD_REGNO_MODE_OK): Redefine.
	(xtensa_hard_regno_mode_ok): New function.
	* system.h (HARD_REGNO_MODE_OK): Poison.

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

From-SVN: r251646

The SVE patches change the size of a machine_mode from a compile-time
constant to a runtime invariant.  However, target-specific code can
continue to treat the modes as constant-sized if the target only has
constant-sized modes.

The main snag with this approach is that target-independent code still
uses macros from the target .h file.  This patch is one of several that
converts a target macro to a hook.

2017-09-04  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* target.def (hard_regno_call_part_clobbered): New hook.
	* doc/tm.texi.in (HARD_REGNO_CALL_PART_CLOBBERED): Replace with...
	(TARGET_HARD_REGNO_CALL_PART_CLOBBERED): ...this hook.
	* doc/tm.texi: Regenerate.
	* hooks.h (hook_bool_uint_mode_false): Declare.
	* hooks.c (hook_bool_uint_mode_false): New function.
	* regs.h (HARD_REGNO_CALL_PART_CLOBBERED): Delete.
	* cselib.c (cselib_process_insn): Use
	targetm.hard_regno_call_part_clobbered instead of
	HARD_REGNO_CALL_PART_CLOBBERED.
	* ira-conflicts.c (ira_build_conflicts): Likewise.
	* ira-costs.c (ira_tune_allocno_costs): Likewise.
	* lra-constraints.c (need_for_call_save_p): Likewise.
	* lra-lives.c: Include target.h.
	(check_pseudos_live_through_calls): Use
	targetm.hard_regno_call_part_clobbered instead of
	HARD_REGNO_CALL_PART_CLOBBERED.
	* regcprop.c: Include target.h.
	(copyprop_hardreg_forward_1): Use
	targetm.hard_regno_call_part_clobbered instead of
	HARD_REGNO_CALL_PART_CLOBBERED.
	* reginfo.c (choose_hard_reg_mode): Likewise.
	* regrename.c (check_new_reg_p): Likewise.
	* reload.c (find_equiv_reg): Likewise.
	* reload1.c (emit_reload_insns): Likewise.
	* sched-deps.c (deps_analyze_insn): Likewise.
	* sel-sched.c (init_regs_for_mode): Likewise.
	(mark_unavailable_hard_regs): Likewise.
	* targhooks.c (default_dwarf_frame_reg_mode): Likewise.
	* config/aarch64/aarch64.h (HARD_REGNO_CALL_PART_CLOBBERED): Delete.
	* config/aarch64/aarch64.c (aarch64_hard_regno_call_part_clobbered):
	New function.
	(TARGET_HARD_REGNO_CALL_PART_CLOBBERED): Redefine.
	* config/avr/avr.h (HARD_REGNO_CALL_PART_CLOBBERED): Delete.
	* config/avr/avr-protos.h (avr_hard_regno_call_part_clobbered):
	Delete.
	* config/avr/avr.c (avr_hard_regno_call_part_clobbered): Make static
	and return a bool.
	(TARGET_HARD_REGNO_CALL_PART_CLOBBERED): Redefine.
	* config/i386/i386.h (HARD_REGNO_CALL_PART_CLOBBERED): Delete.
	* config/i386/i386.c (ix86_hard_regno_call_part_clobbered): New
	function.
	(TARGET_HARD_REGNO_CALL_PART_CLOBBERED): Redefine.
	* config/mips/mips.h (HARD_REGNO_CALL_PART_CLOBBERED): Delete.
	* config/mips/mips.c (mips_hard_regno_call_part_clobbered): New
	function.
	(TARGET_HARD_REGNO_CALL_PART_CLOBBERED): Redefine.
	* config/powerpcspe/powerpcspe.h (HARD_REGNO_CALL_PART_CLOBBERED):
	Delete.
	* config/powerpcspe/powerpcspe.c
	(rs6000_hard_regno_call_part_clobbered): New function.
	(TARGET_HARD_REGNO_CALL_PART_CLOBBERED): Redefine.
	* config/rs6000/rs6000.h (HARD_REGNO_CALL_PART_CLOBBERED): Delete.
	* config/rs6000/rs6000.c (rs6000_hard_regno_call_part_clobbered):
	New function.
	(TARGET_HARD_REGNO_CALL_PART_CLOBBERED): Redefine.
	* config/s390/s390.h (HARD_REGNO_CALL_PART_CLOBBERED): Delete.
	* config/s390/s390.c (s390_hard_regno_call_part_clobbered): New
	function.
	(TARGET_HARD_REGNO_CALL_PART_CLOBBERED): Redefine.
	* config/sh/sh.h (HARD_REGNO_CALL_PART_CLOBBERED): Delete.
	* system.h (HARD_REGNO_CALL_PART_CLOBBERED): Poison.

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

From-SVN: r251645

This patch adds routines for converting a SUBREG_BYTE offset into a
memory address offset.  The two only differ for paradoxical subregs,
where SUBREG_BYTE is always 0 but the memory address offset can be
negative.

2017-09-04  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* rtl.h (subreg_memory_offset): Declare.
	* emit-rtl.c (subreg_memory_offset): New function.
	* expmed.c (store_bit_field_1): Use it.
	* expr.c (undefined_operand_subword_p): Likewise.
	* simplify-rtx.c (simplify_subreg): Likewise.

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

From-SVN: r251644

	PR rtl-optimization/57448
	PR target/67458
	PR target/81316
	* optabs.c (expand_atomic_load): Place compiler memory barriers if
	using atomic_load pattern.
	(expand_atomic_store): Likewise.
testsuite/
	* gcc.dg/atomic/pr80640-2.c: New testcase.
	* gcc.dg/atomic/pr81316.c: New testcase.

From-SVN: r251643

2017-09-04  Tom de Vries  <tom@codesourcery.com>

	PR tree-optimization/82052
	* gcc.c-torture/compile/pr82052.c (fn2): Add parameters corresponding to
	call in fn11.

From-SVN: r251642

	PR sanitizer/81981
	* gimple-fold.c (gimple_fold_call): Optimize away useless UBSAN_PTR
	and UBSAN_BOUNDS internal calls.  Clean up IFN_UBSAN_OBJECT_SIZE
	handling.  Use replace_call_with_value with NULL instead of
	gsi_replace, unlink_stmt_vdef and release_defs.

	* gcc.dg/ubsan/pr81981.c: New test.

From-SVN: r251641

	* gdbhooks.py (OptMachineModePrinter.to_string): Use 8 spaces
	instead of tab.

From-SVN: r251640

From-SVN: r251639

re PR tree-optimization/70043 (The compiler hangs in a fortran test-case with -Ofast -g -march=haswell)

	PR tree-optimization/70043
	PR testsuite/82093
	* gfortran.dg/vect/pr70043.f90 (fn1): Start loop from 1 instead of 0.

From-SVN: r251638

PR82045 is about a bootstrap failure on sparc-sun-solaris2.11.
The problem was that we were passing the new machine_mode wrapper
classes through "..."  to emit_library_call(_value), which then
read them back as ints instead.

The simplest fix seemed to be replace "..." with an array of
rtx_mode_ts, then provide wrappers for the common cases.  This
bulks out rtl.h a bit, but it does make things a bit more typesafe.

2017-09-04  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	PR bootstrap/82045
	* rtl.h (emit_library_call_value_1): Declare.
	(emit_library_call): Replace declaration with a series of overloads.
	Remove the parameter count argument.
	(emit_library_call_value): Likewise.
	* calls.c (emit_library_call_value_1): Make global.  Replace varargs
	with an "rtx_mode_t *".
	(emit_library_call_value): Delete.
	(emit_library_call): Likewise.
	* asan.c (asan_emit_stack_protection): Update calls accordingly.
	(asan_emit_allocas_unpoison): Likewise.
	* builtins.c (expand_builtin_powi): Likewise.
	(expand_asan_emit_allocas_unpoison): Likewise.
	* cfgexpand.c (expand_main_function): Likewise.
	* config/aarch64/aarch64.c (aarch64_trampoline_init): Likewise.
	* config/aarch64/aarch64.h (PROFILE_HOOK): Likewise.
	* config/alpha/alpha.c (alpha_trampoline_init): Likewise.
	* config/arm/arm.c (arm_trampoline_init): Likewise.
	(arm_call_tls_get_addr): Likewise.
	(arm_expand_divmod_libfunc): Likewise.
	* config/bfin/bfin.md (umulsi3_highpart): Likewise.
	(smulsi3_highpart): Likewise.
	* config/c6x/c6x.c (c6x_initialize_trampoline): Likewise.
	(c6x_expand_compare): Likewise.
	(c6x_expand_movmem): Likewise.
	* config/frv/frv.c (frv_trampoline_init): Likewise.
	* config/i386/i386.c (ix86_trampoline_init): Likewise.
	(ix86_expand_divmod_libfunc): Likewise.
	* config/ia64/ia64.c (ia64_expand_tls_address): Likewise.
	(ia64_expand_compare): Likewise.
	(ia64_profile_hook): Likewise.
	* config/ia64/ia64.md (save_stack_nonlocal): Likewise.
	(nonlocal_goto): Likewise.
	(restore_stack_nonlocal): Likewise.
	* config/m32r/m32r.c (block_move_call): Likewise.
	(m32r_trampoline_init): Likewise.
	* config/m68k/linux.h (FINALIZE_TRAMPOLINE): Likewise.
	* config/m68k/m68k.c (m68k_call_tls_get_addr): Likewise.
	(m68k_call_m68k_read_tp): Likewise.
	* config/microblaze/microblaze.c (microblaze_call_tls_get_addr)
	(microblaze_expand_divide): Likewise.
	* config/mips/mips.h (mips_args): Likewise.
	* config/mips/sdemtk.h (mips_sync_icache): Likewise.
	(MIPS_ICACHE_SYNC): Likewise.
	* config/nios2/nios2.c (nios2_emit_expensive_div): Likewise.
	(nios2_trampoline_init): Likewise.
	* config/pa/pa.c (hppa_tls_call): Likewise.
	(pa_trampoline_init): Likewise.
	* config/pa/pa.md (canonicalize_funcptr_for_compare): Likewise.
	* config/powerpcspe/powerpcspe.c (rs6000_legitimize_tls_address)
	(expand_strn_compare): Likewise.
	(rs6000_generate_compare): Likewise.
	(rs6000_expand_float128_convert): Likewise.
	(output_profile_hook): Likewise.
	(rs6000_trampoline_init): Likewise.
	* config/powerpcspe/powerpcspe.md (neg<mode>2): Likewise.
	* config/riscv/riscv.h (PROFILE_HOOK): Likewise.
	* config/rs6000/rs6000-string.c (expand_strn_compare): Likewise.
	* config/rs6000/rs6000.c (rs6000_legitimize_tls_address): Likewise.
	(rs6000_generate_compare): Likewise.
	(rs6000_expand_float128_convert): Likewise.
	(output_profile_hook): Likewise.
	(rs6000_trampoline_init): Likewise.
	* config/rs6000/rs6000.md (neg<mode>2): Likewise.
	* config/sh/sh.c (sh_trampoline_init): Likewise.
	* config/sparc/sparc.c (emit_soft_tfmode_libcall): Likewise.
	(sparc_emit_float_lib_cmp): Likewise.
	(sparc32_initialize_trampoline): Likewise.
	(sparc64_initialize_trampoline): Likewise.
	(sparc_profile_hook): Likewise.
	* config/spu/spu.c (ea_load_store): Likewise.
	* config/spu/spu.md (floatunssidf2): Likewise.
	* config/tilegx/tilegx.c (tilegx_trampoline_init): Likewise.
	* config/tilepro/tilepro.c (tilepro_trampoline_init): Likewise.
	* config/visium/visium.c (expand_block_move_4): Likewise.
	(expand_block_move_2): Likewise.
	(expand_block_move_1): Likewise.
	(expand_block_set_4): Likewise.
	(expand_block_set_2): Likewise.
	(expand_block_set_1): Likewise.
	(visium_trampoline_init): Likewise.
	(visium_profile_hook): Likewise.
	* config/xtensa/xtensa.c (xtensa_expand_nonlocal_goto): Likewise.
	(xtensa_setup_frame_addresses): Likewise.
	(xtensa_trampoline_init): Likewise.
	* except.c (sjlj_emit_function_enter): Likewise.
	(sjlj_emit_function_exit): Likewise.
	* explow.c (allocate_dynamic_stack_space): Likewise.
	(probe_stack_range): Likewise.
	* expr.c (convert_mode_scalar): Likewise.
	* optabs.c (expand_binop): Likewise.
	(expand_twoval_binop_libfunc): Likewise.
	(expand_unop): Likewise.
	(prepare_cmp_insn): Likewise.
	(prepare_float_lib_cmp): Likewise.
	(expand_float): Likewise.
	(expand_fix): Likewise.
	(expand_fixed_convert): Likewise.
	(maybe_emit_sync_lock_test_and_set): Likewise.
	(expand_atomic_compare_and_swap): Likewise.
	(expand_mem_thread_fence): Likewise.
	(expand_atomic_fetch_op): Likewise.

From-SVN: r251637

From-SVN: r251633

	* gcc.target/i386/adx-check.h (main): Use __get_cpuid_count.
	* gcc.target/i386/bmi-check.h (main): Ditto.
	* gcc.target/i386/bmi2-check.h (main): Ditto.
	* gcc.target/i386/rtm-check.h (main): Ditto.
	* gcc.target/i386/sha-check.h (main): Ditto.
	* gcc.target/i386/avx2-check.h (check_osxsave): New function.
	(main): Use __get_cpuid_count.  Use check_osxsave.
	* gcc.target/i386/avx512-check.h (check_osxsave): New function.
	(main): Use __get_cpuid_count.  Use check_osxsave.  Reorder conditions.
	* gcc.target/i386/mpx/mpx-check.h (check_osxsave): New function.
	(main): Use check_osxsave.

From-SVN: r251629