libgo: netinet/icmp6.h require netinet/in.h on AIX

    Reviewed-on: https://go-review.googlesource.com/59912

From-SVN: r251439

PR c++/81236 - ICE with template-id in generic lambda

* semantics.c (finish_id_expression): Remove special dependent case.
Avoid some later pieces when dependent.
(finish_qualified_id_expr): Do normal BASELINK handling in a
template.  Always build a SCOPE_REF for a destructor BIT_NOT_EXPR.
(parsing_default_capturing_generic_lambda_in_template): Remove.
* parser.c (cp_parser_postfix_dot_deref_expression): Always give an
error for types that will never be complete.
* mangle.c (write_expression): Add sanity check.
* tree.c (build_qualified_name): Add sanity check.
(cp_walk_subtrees): Walk into the class context of a BASELINK.
* lambda.c (add_capture): Improve diagnostic for generic lambda
capture failure.
* call.c (build_new_method_call_1): Print the right constructor
name.

From-SVN: r251438

libgo: fix Stat_t on AIX

    Reviewed-on: https://go-review.googlesource.com/59911

From-SVN: r251436

runtime: make go-nosys.c compile with !HAVE_SYSCALL

    Reviewed-on: https://go-review.googlesource.com/59910

From-SVN: r251435

tweak ChangeLog

From-SVN: r251434

Reimplement handling of lambdas in templates.

* cp-tree.h (LAMBDA_FUNCTION_P): Check DECL_DECLARES_FUNCTION_P.
* decl.c (start_preparsed_function): Call start_lambda_scope.
(finish_function): Call finish_lambda_scope.
* init.c (get_nsdmi): Call start/finish_lambda_scope.
* lambda.c (start_lambda_scope): Only ignore VAR_DECL in a function.
* parser.c (cp_parser_function_definition_after_declarator): Don't
call start/finish_lambda_scope.
* pt.c (retrieve_specialization): Ignore lambda functions in
templates.
(find_parameter_packs_r): Ignore capture proxies.  Look into
lambdas.
(check_for_bare_parameter_packs): Allow bare packs in lambdas.
(tsubst_default_argument): Call start/finish_lambda_scope.
(tsubst_function_decl): Handle lambda functions differently.
(tsubst_template_decl): Likewise.
(tsubst_expr) [DECL_EXPR]: Skip closure declarations and capture
proxies.
(tsubst_lambda_expr): Create a new closure rather than instantiate
the one from the template.
(tsubst_copy_and_build): Don't register a specialization of a pack.
(regenerate_decl_from_template): Call start/finish_lambda_scope.
(instantiate_decl): Remove special lambda function handling.
* semantics.c (process_outer_var_ref): Remove special generic lambda
handling.  Don't implicitly capture in a lambda in a template.  Look
for an existing proxy.
* class.c (current_nonlambda_class_type): Use decl_type_context.

From-SVN: r251433

re PR target/82015 (PowerPC should check if 2nd argument to __builtin_unpackv1ti and similar functions is 0 or 1)

[gcc]
2017-08-29  Michael Meissner  <meissner@linux.vnet.ibm.com>

PR target/82015
* config/rs6000/rs6000.c (rs6000_expand_binop_builtin): Insure
that the second argument of the built-in functions to unpack
128-bit scalar types to 64-bit values is 0 or 1.  Change to use a
switch statement instead a lot of if statements.
* config/rs6000/rs6000.md (unpack<mode>, FMOVE128_VSX iterator):
Allow 64-bit values to be in Altivec registers as well as
traditional floating point registers.
(pack<mode>, FMOVE128_VSX iterator): Likewise.

[gcc/testsuite]
2017-08-29  Michael Meissner  <meissner@linux.vnet.ibm.com>

PR target/82015
* gcc.target/powerpc/pr82015.c: New test.

From-SVN: r251432

PR c++/78840 - ICE with const and nested generic lambda

* g++.dg/cpp1y/lambda-generic-const5.C: New.

From-SVN: r251431

Remove unnecessary LAMBDA_EXPR fields.

* cp-tree.h (LAMBDA_EXPR_CLOSURE): Use TREE_TYPE.
(LAMBDA_EXPR_RETURN_TYPE): Remove.
(struct tree_lambda_expr): Remove closure and return_type fields.
* lambda.c (build_lambda_expr): Don't set LAMBDA_EXPR_RETURN_TYPE.
* pt.c (tsubst_copy_and_build): Likewise.
* parser.c (cp_parser_lambda_declarator_opt): Track return type.
(cp_parser_lambda_body): Adjust unspecified return type check.
* ptree.c (cxx_print_lambda_node): Don't print closure or
return type.

From-SVN: r251430

PR c++/80935 - wrong C++17 error with lambda

* decl.c (check_for_uninitialized_const_var): Check
is_instantiation_of_constexpr.
* constexpr.c (ensure_literal_type_for_constexpr_object): Check
is_instantiation_of_constexpr.
(potential_constant_expression_1): Check var_in_maybe_constexpr_fn.

From-SVN: r251429

Various small fixes.

* lambda.c (build_lambda_object): Check for error_mark_node.
* pt.c (make_pack_expansion): Set PACK_EXPANSION_LOCAL_P on the type
pack as well.
(tsubst_decl) [FUNCTION_DECL]: Set DECL_CONTEXT on the parameters.
(tsubst) [TEMPLATE_PARM_INDEX]: Check for error_mark_node.

From-SVN: r251428

PR c++/80767 - unnecessary instantiation of generic lambda

* call.c (convert_like_real): Call build_user_type_conversion_1 if
cand is null.
(add_conv_candidate): Build a ck_user conversion with no candidate.

From-SVN: r251427

Fix lambdas in template default argument of inherited ctor.

* method.c (synthesized_method_base_walk): Replace an inherited
template with its specialization.
(synthesized_method_walk): Make inheriting_ctor a pointer.
(maybe_explain_implicit_delete, explain_implicit_non_constexpr)
(deduce_inheriting_ctor, implicitly_declare_fn): Adjust.

From-SVN: r251426

Adjust C++17 class deduction use of DECL_ABSTRACT_ORIGIN.

* pt.c (build_deduction_guide): Set DECL_ABSTRACT_ORIGIN on the
template, not the function.
(template_guide_p): Adjust.

From-SVN: r251425

Support copying local_specializations.

* cp-tree.h (enum lss_policy): New.
(local_specialization_stack): Add policy parameter to default ctor.
* pt.c (local_specialization_stack): Copy local_specializations if
lss_copy.

From-SVN: r251424

Add immediate potential_constant_expression variants.

* constexpr.c (potential_constant_expression_1): Add "now" parm.
(is_constant_expression, require_constant_expression): New.
(is_static_init_expression, is_nondependent_constant_expression)
(is_nondependent_static_init_expression): Drop "potential".
* except.c (build_must_not_throw_expr): Do type conversion on
value-dependent argument.
* pt.c, semantics.c, typeck2.c: Use variants without "potential".

From-SVN: r251423

Instantiate default arguments/member initializers once.

* init.c (get_nsdmi): Remember NSDMI instantiations.
* parser.c (inject_this_parameter): Be more picky about
current_class_ptr.
* pt.c (tsubst_copy): Simplify 'this' handling.
(tsubst_default_argument): Remember default argument
instantiations.  Take parameter number.
(tsubst_default_arguments): Pass it.
* call.c (convert_default_arg): Likewise.

From-SVN: r251422

Fix default argument conversion failure and SFINAE.

* call.c (build_over_call): Check convert_default_arg result for
error_mark_node.
* parser.c (cp_parser_late_parsing_default_args): Remember
error_mark_node.

From-SVN: r251421

runtime: fix lfstack for 64-bit AIX

    Reviewed-on: https://go-review.googlesource.com/57550

From-SVN: r251420

*.c: Remove excess braces from target selectors.

* gcc.target/i386/*.c: Remove excess braces from target selectors.

From-SVN: r251419

ira-costs: avoid missing base registers in record_address_regs

* ira-costs.c (record_address_regs): Handle both operands of PLUS for
MAX_REGS_PER_ADDRESS == 1.

From-SVN: r251418

20030926-1.c: Add dg-additional-options.

* gcc.target/i386/20030926-1.c: Add dg-additional-options.
* gcc.target/i386/abi-2.c: Ditto.
* gcc.target/i386/interrupt-sibcall-2.c: Ditto.
* gcc.target/i386/pr22076.c: Ditto.
* gcc.target/i386/pr37216.c: Ditto.
* gcc.target/i386/pr39431.c: Ditto.
* gcc.target/i386/pr40906-1.c: Ditto.
* gcc.target/i386/pr40906-2.c: Ditto.
* gcc.target/i386/pr43766.c: Ditto.
* gcc.target/i386/pr46226.c: Ditto.
* gcc.target/i386/pr46470.c: Ditto.
* gcc.target/i386/pr59929.c: Ditto.
* gcc.target/i386/sse-10.c: Ditto.
* gcc.target/i386/vararg-1.c: Ditto.
* gcc.target/i386/vararg-1.c: Ditto.
* gcc.target/i386/asm-6.c: Compile for fpic target only.
* gcc.target/i386/pr44223.c: Ditto.
* gcc.target/i386/bitfield1.c (dg-options): Remove target selector.
* gcc.target/i386/bitfield2.c (dg-options): Ditto.
* gcc.target/i386/pr67480.c (dg-options): Ditto.
* gcc.target/i386/vect-cond-1.c (dg-options): Ditto.
* gcc.target/i386/bittest.c (scan-assembler-times): Ditto.
* gcc.target/i386/darwin-fpmath.c (dg-do): Simplify target selector.
* gcc.target/i386/mvc9.c: Compile for lto target only.
* gcc.target/i386/pr45234.c: Compile for ia32 target only.
* gcc.target/i386/pr49866.c: Compile for lp64 target only.
* gcc.target/i386/pr57091.c: Ditto.
* gcc.target/i386/pr61599-2.c: Ditto.

From-SVN: r251417

i386.opt (flag_fentry): Do not init to -1.

* config/i386/i386.opt (flag_fentry): Do not init to -1.
* config/i386/i386.c (ix86_option_override_internal): Simplify
setting of opts->x_flag_entry.

From-SVN: r251416

re PR tree-optimization/81503 (Wrong code at -O2)

[gcc]

2017-08-29  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
    Jakub Jelinek  <jakub@redhat.com>
    Richard Biener  <rguenther@suse.de>

PR tree-optimization/81503
* gimple-ssa-strength-reduction.c (replace_mult_candidate): Ensure
folded constant fits in the target type; reorder tests for clarity.

[gcc/testsuite]

2017-08-29  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

PR tree-optimization/81503
* gcc.c-torture/execute/pr81503.c: New file.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
Co-Authored-By: Richard Biener <rguenther@suse.de>
From-SVN: r251414

Make expansion of balanced binary trees of switches on tree level.

2017-08-29  Martin Liska  <mliska@suse.cz>

* passes.def: Include pass_lower_switch.
* stmt.c (dump_case_nodes): Remove and move to
tree-switch-conversion.
(case_values_threshold): Likewise.
(expand_switch_as_decision_tree_p): Likewise.
(emit_case_decision_tree): Likewise.
(expand_case): Likewise.
(balance_case_nodes): Likewise.
(node_has_low_bound): Likewise.
(node_has_high_bound): Likewise.
(node_is_bounded): Likewise.
(emit_case_nodes): Likewise.
(struct simple_case_node): New struct.
(add_case_node): Remove.
(emit_case_dispatch_table): Use vector instead of case_list.
(reset_out_edges_aux): Remove.
(compute_cases_per_edge): Likewise.
(expand_case): Build list of simple_case_node.
(expand_sjlj_dispatch_table): Use it.
* tree-switch-conversion.c (struct case_node): Moved from
stmt.c and adjusted.
(emit_case_nodes): Likewise.
(node_has_low_bound): Likewise.
(node_has_high_bound): Likewise.
(node_is_bounded): Likewise.
(case_values_threshold): Likewise.
(reset_out_edges_aux): Likewise.
(compute_cases_per_edge): Likewise.
(add_case_node): Likewise.
(dump_case_nodes): Likewise.
(balance_case_nodes): Likewise.
(expand_switch_as_decision_tree_p): Likewise.
(emit_jump): Likewise.
(emit_case_decision_tree): Likewise.
(try_switch_expansion): Likewise.
(do_jump_if_equal): Likewise.
(emit_cmp_and_jump_insns): Likewise.
(fix_phi_operands_for_edge): New function.
(record_phi_operand_mapping): Likewise.
(class pass_lower_switch): New pass.
(pass_lower_switch::execute): New function.
(make_pass_lower_switch): Likewise.
(conditional_probability):
* timevar.def: Add TV_TREE_SWITCH_LOWERING.
* tree-pass.h: Add make_pass_lower_switch.
2017-08-29  Martin Liska  <mliska@suse.cz>

* gcc.dg/tree-prof/update-loopch.c: Scan patterns in
switchlower.
* gcc.dg/tree-ssa/vrp104.c: Likewise.

From-SVN: r251412

re PR target/80993 ([msp430] __attribute__((interrupt)) should imply __attribute__((used)))

PR target/80993
* gcc/config/msp430/msp430.c (msp430_attr): Mark interrupt
handlers as used.

From-SVN: r251410

dwarf2out.c (add_dwarf_attr): When checking is enabled verify we do not add a DW_AT_inline attribute twice.

2017-08-29  Richard Biener  <rguenther@suse.de>

* dwarf2out.c (add_dwarf_attr): When checking is enabled verify
we do not add a DW_AT_inline attribute twice.
(gen_subprogram_die): Remove code setting DW_AT_inline on
DECL_ABSTRACT_P nodes.

From-SVN: r251409

Fix --help=target (Ada) (PR other/39851)

2017-08-29  Martin Liska  <mliska@suse.cz>

PR other/39851
* gcc-interface/trans.c (Pragma_to_gnu): Set argument to NULL.

From-SVN: r251406

Set the call nothrow flag more often

This patch sets the nothrow flag for various calls to internal functions
that are not inherently NOTHROW (and so can't be declared that way in
internal-fn.def) but that are used in contexts that can guarantee
NOTHROWness.

2017-08-29  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* gimplify.c (gimplify_call_expr): Copy the nothrow flag to
calls to internal functions.
(gimplify_modify_expr): Likewise.
* tree-call-cdce.c (use_internal_fn): Likewise.
* tree-ssa-math-opts.c (pass_cse_reciprocals::execute): Likewise.
(convert_to_divmod): Set the nothrow flag.
* tree-if-conv.c (predicate_mem_writes):  Likewise.
* tree-vect-stmts.c (vectorizable_mask_load_store): Likewise.
(vectorizable_call): Likewise.
(vectorizable_store): Likewise.
(vectorizable_load): Likewise.
* tree-vect-patterns.c (vect_recog_pow_pattern): Likewise.
(vect_recog_mask_conversion_pattern): Likewise.

From-SVN: r251401

Fix --help=target (PR other/39851).

2017-08-29  Martin Liska  <mliska@suse.cz>

PR other/39851
* gcc.c (driver_handle_option): Add new argument.
* opts-common.c (handle_option): Pass
target_option_override_hook.
* opts-global.c (lang_handle_option): Add new option.
(set_default_handlers):  Add new argument.
(decode_options): Likewise.
* opts.c (target_handle_option): Likewise.
(common_handle_option): Call target_option_override_hook.
* opts.h (struct cl_option_handler_func): Add hook for
target option override.
(struct cl_option_handlers): Likewise.
(set_default_handlers): Add new argument.
(decode_options): Likewise.
(common_handle_option): Likewise.
(target_handle_option): Likewise.
* toplev.c (toplev::main): Pass targetm.target_option.override
hook.
2017-08-29  Martin Liska  <mliska@suse.cz>

PR other/39851
* c-common.c (parse_optimize_options): Add argument to function
call.
* c-pragma.c (handle_pragma_diagnostic): Likewise.

From-SVN: r251400

tree-vect-slp.c (vect_bb_slp_scalar_cost): Properly confine life to the active subtree.

2017-08-29  Richard Biener  <rguenther@suse.de>
Dominik Infuehr <dominik.infuehr@theobroma-systems.com>

* tree-vect-slp.c (vect_bb_slp_scalar_cost): Properly confine
life to the active subtree.

* gcc.dg/vect/costmodel/x86_64/costmodel-vect-slp.c: New testcase.

Co-Authored-By: Dominik Infuehr <dominik.infuehr@theobroma-systems.com>
From-SVN: r251398

tree-ssa-dom.c (edge_info::record_simple_equiv): Call derive_equivalences.

* tree-ssa-dom.c (edge_info::record_simple_equiv): Call
derive_equivalences.
(derive_equivalences_from_bit_ior, record_temporary_equivalences):
Code moved into....
(edge_info::derive_equivalences): New private member function

* gcc.dg/torture/pr57214.c: Fix type of loop counter.
* gcc.dg/tree-ssa/ssa-sink-16.c: Disable DOM.
* gcc.dg/tree-ssa/ssa-dom-thread-11.c: New test.
* gcc.dg/tree-ssa/ssa-dom-thread-12.c: New test.
* gcc.dg/tree-ssa/ssa-dom-thread-13.c: New test.
* gcc.dg/tree-ssa/ssa-dom-thread-14.c: New test.
* gcc.dg/tree-ssa/ssa-dom-thread-15.c: New test.
* gcc.dg/tree-ssa/ssa-dom-thread-16.c: New test.
* gcc.dg/tree-ssa/ssa-dom-thread-17.c: New test.

From-SVN: r251397

tree-ssa-dom.c (class edge_info): Changed from a struct to a class.

* tree-ssa-dom.c (class edge_info): Changed from a struct
to a class.  Add ctor/dtor, methods and data members.
(edge_info::edge_info): Renamed from allocate_edge_info.
Initialize additional members.
(edge_info::~edge_info): New.
(free_dom_edge_info): Delete the edge info.
(record_edge_info): Use new class & associated member functions.
Tighten forms for testing for edge equivalences.
(record_temporary_equivalences): Iterate over the simple
equivalences rather than assuming there's only one per edge.
(cprop_into_successor_phis): Iterate over the simple
equivalences rather than assuming there's only one per edge.
(optimize_stmt): Use operand_equal_p rather than pointer
equality for mini-DSE code.

From-SVN: r251396

Daily bump.

From-SVN: r251395

re PR fortran/81770 (Bogus warning: Pointer in pointer assignment might outlive the pointer target)

2017-08-28  Janus Weil  <janus@gcc.gnu.org>

PR fortran/81770
* expr.c (gfc_check_pointer_assign): Improve the check whether pointer
may outlive pointer target.

2017-08-28  Janus Weil  <janus@gcc.gnu.org>

PR fortran/81770
* gfortran.dg/warn_target_lifetime_3.f90: Fix a typo.
* gfortran.dg/warn_target_lifetime_4.f90: New testcase.

From-SVN: r251390

dec_init_1.f90 (dummy): Use ichar in print statement.

2017-08-25  Steve Ellcey  <sellcey@cavium.com>

* gfortran.dg/dec_init_1.f90 (dummy): Use ichar in print statement.
* gfortran.dg/dec_init_2.f90 (dummy): Ditto.
* gfortran.dg/dec_init_3.f90 (dummy): Ditto.

From-SVN: r251389

cp-tree.h (lang_type): Replace sorted_fields vector with bindings map.

* cp-tree.h (lang_type): Replace sorted_fields vector with
bindings map.
(CLASSTYPE_SORTED_FIELDS): Delete.
(CLASSTYPE_BINDINGS): New.
* decl.c (finish_enum_value_list): Swap args of
insert_late_enum_def_bindings.
* name-lookup.c (lookup_field_1): Replace binary search of sorted
fields with map->get.
(sorted_fields_type_new, count_fields,
add_fields_to_record_type, add_enum_fields_to_record_type): Delete.
(add_class_member, add_class_members): New.
(set_class_bindings): Create map and insert.
(insert_late_enum_def_binding): Swap parms.  Use add_clasS_member.
* ptree.c (cxx_print_type): Delete sorted fields printing.

From-SVN: r251388

cp-tree.h (insert_late_enum_def_into_classtype_sorted_fields): Delete.

* cp-tree.h (insert_late_enum_def_into_classtype_sorted_fields):
Delete.
* name-lookup.h (set_class_bindings,
insert_late_enum_def_bindings): Declare.
* decl.c (finish_enum_value_list): Adjust for
insert_late_enum_def_bindings name change.
* class.c (finish_struct_1): Call set_class_bindings.
(count_fields, add_fields_to_record_type,
add_enum_fields_to_record_type, sorted_fields_type_new,
insert_into_classtype_sorted_fields,
insert_late_enum_def_into_classtype_sorted_fields): Move to ...
* name-lookup.h (count_fields, add_fields_to_record_type,
add_enum_fields_to_record_type, sorted_fields_type_new,
set_class_bindings, insert_late_enum_def_bindings): ... here.

From-SVN: r251387

gcc.c (execute): Fold SIGPIPE handling into switch statement.

* gcc.c (execute): Fold SIGPIPE handling into switch
statement.  Adjust internal error message.

From-SVN: r251385

re PR lto/81968 (early lto debug objects make Solaris ld SEGV)

2017-08-28  Richard Biener  <rguenther@suse.de>

PR lto/81968
* simple-object-elf.c (simple_object_elf_copy_lto_debug_section):
Adjust field with for sh_type write, set SHF_EXCLUDE only for
removed sections.

From-SVN: r251384

re PR debug/81993 (-gsplit-dwarf removes some symbols, causing some undefined references)

2017-08-28  Richard Biener  <rguenther@suse.de>

PR debug/81993
* dwarf2out.c (gen_remaining_tmpl_value_param_die_attributes):
Do nothing for removed DIEs.

From-SVN: r251382

re PR tree-optimization/81977 (Issue with inline memcpy with optimizations enabled)

2017-08-28  Richard Biener  <rguenther@suse.de>

PR tree-optimization/81977
* tree-ssa-sccvn.c (vn_reference_lookup_3): Fix look through
memcpy.

* g++.dg/torture/pr81977.C: New testcase.

From-SVN: r251378

optabs: ensure mem_thread_fence is a compiler barrier

PR target/80640
* doc/md.texi (mem_thread_fence): Remove mention of mode.  Rewrite.
* optabs.c (expand_mem_thread_fence): Emit a compiler barrier when
using targetm.gen_mem_thread_fence.
testsuite/
* gcc.dg/atomic/pr80640.c: New testcase.

From-SVN: r251377

re PR fortran/78387 (OpenMP segfault/stack size exceeded writing to internal file)

2017-08-27  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

PR libgfortran/78387
* io/list_read.c (nml_read_obj): Remove use of stash.
* io/transfer.c (st_read_done, st_write_done): Likewise.
* io/unit.c (stash_internal_unit): Delete function.
(get_unit): Remove use of stash.
(init_units): Likewise.
(close_units): Likewise.
* io/write.c (nml_write_obj): Likewise:

From-SVN: r251374

Daily bump.

From-SVN: r251373

re PR target/81995 (gcc/reg-stack.c:2073:1: error: unrecognizable insn:)

PR target/81995
* config/i386/i386.md (*<btsc><mode>): Change operand 2
predicate to register_operand.  Reorder operands.
(*btr<mode>): Ditto.
(*<btsc><mode>_mask): Change operand 3 predicate to register_operand.
(*btr<mode>_mask): Ditto.

testsuite/ChangeLog:

PR target/81995
* gcc.target/i386/pr46091-4.c: Add -mregparm=2 for 32bit targets.
* gcc.target/i386/pr46091-4a.c: Ditto.

From-SVN: r251369

re PR fortran/81974 (ICE verify_gimple failed  type mismatch in binary expression)

2017-08-27  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/81974
* frontend-passes (inline_matumul_assign):  Explicity
set typespec for call to CONJG.

2017-08-27  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/81974
* gfortran.dg/inline_matmul_19.f90:  New test.

From-SVN: r251368

Daily bump.

From-SVN: r251367

Daily bump.

From-SVN: r251362

Part 3/3 for contributing PPC64LE support for X86 SSE instrisics.
This patch includes testsuite/gcc.target tests for the intrinsics
in xmmintrin.h.  For these tests I added -Wno-psabi to dg-options
to suppress warnings associated with the vector ABI change in GCC5.

From-SVN: r251357

Part 2/3 for contributing PPC64LE support for X86 SSE instrisics.

Part 2/3 for contributing PPC64LE support for X86 SSE
instrisics. This patch includes the new (for PPC) xmmintrin.h,
changes x86intrin.h to include xmmintrin.h and associated
config.gcc changes.

From-SVN: r251356

re PR target/81504 (gcc-7 regression: vec_st  in loop misoptimized)

2017-08-25  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

PR target/81504
* config/rs6000/rs6000-p8swap.c (find_alignment_op): Add reference
parameter and_insn and return it.
(recombine_lvx_pattern): Insert a copy to ensure availability of
the base register of the copied masking operation at the point of
the instruction replacement.
(recombine_stvx_pattern): Likewise.

From-SVN: r251355

rs6000.opt (-mpower9-dform-scalar): Delete undocumented switches.

[gcc]
2017-08-24  Michael Meissner  <meissner@linux.vnet.ibm.com>

* config/rs6000/rs6000.opt (-mpower9-dform-scalar): Delete
undocumented switches.
(-mpower9-dform-vector): Likewise.
(-mpower9-dform): Likewise.
* config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Update
comments to delete references to -mpower9-dform* switches.
* config/rs6000/predicates.md (vsx_quad_dform_memory_operand):
Delete reference to -mpower9-dform* switches, test for
-mpower9-vector instead.
* config/rs6000/rs6000-cpus.def (ISA_3_0_MASKS_SERVER): Likewise.
(OTHER_P9_VECTOR_MASKS): Likewise.
(POWERPC_MASKS): Likewise.
* config/rs6000/rs6000.c (rs6000_setup_reg_addr_masks): Change
tests against -mpower9-dform* to -mpower9-vector.  Delete code
that checked for -mpower9-dform* consistancy with other options.
Add test for -mpower9-misc to enable other power9 switches.
(rs6000_init_hard_regno_mode_ok): Likewise.
(rs6000_option_override_internal): Likewise.
(rs6000_emit_prologue): Likewise.
(rs6000_emit_epilogue): Likewise.
(rs6000_opt_masks): Delete -mpower9-dform-{scalar,vector}.
(rs6000_disable_incompatiable_switches): Delete -mpower9-dform.
(emit_fusion_p9_load): Change tests for -mpower9-dform-scalar
-mpower9-vector.
(emit_fusion_p9_store): Likewise.
* config/rs6000/rs6000.h (TARGET_P9_DFORM_SCALAR): Delete
resetting these macros if the assembler does not support ISA 3.0
instructions.
(TARGET_P9_DFORM_VECTOR): Likewise.
* config/rs6000/rs6000.md (peepholes to optimize altivec memory):
Change to use -mpower9-vector instead of -mpower9-dform-scalar.

[gcc/testsuite]
2017-08-24  Michael Meissner  <meissner@linux.vnet.ibm.com>

* gcc.target/powerpc/dform-1.c: Delete -mpower9-dform*
options.
* gcc.target/powerpc/dform-2.c: Likewise.
* gcc.target/powerpc/dform-3.c: Likewise.
* gcc.target/powerpc/pr71656-1.c: Likewise.
* gcc.target/powerpc/pr71656-2.c: Likewise.
* gcc.target/powerpc/pr80103-1.c: Likewise.
* gcc.target/powerpc/pr80098-1.c: Likewise.

From-SVN: r251352

re PR target/81921 (Fails to always-inline intrinsics with -flto)

Retabify 2017-08-24  Richard Biener  <rguenther@suse.de>
PR target/81921

From-SVN: r251351

class.c (method_name_cmp, [...]): Method names can never be NULL.

* class.c (method_name_cmp, resort_method_name_cmp): Method names
can never be NULL.

From-SVN: r251350

PR81747, ICE in operator[]

PR rtl-optimization/81747
* cse.c (cse_extended_basic_block): Don't attempt to record
equivalences for degenerate conditional branches that branch
to their fall-through.

From-SVN: r251349

Conversion operators have a special name

Conversion operators have a special name
* cp-tree.h (CPTI_CONV_OP_MARKER, CPTI_CONV_OP_IDENTIFIER): New.
(conv_op_marker, conv_op_identifier): New.
(CLASSTYPE_FIRST_CONVERSION_SLOT): Delete.
* decl.c (initialize_predefined_identifiers): Add
conv_op_identifier.
(cxx_init_decl_processing): Create conv_op_marker.
* decl2.c (check_classfn): Lookup conv-ops by name.
* class.c (add_method): Use conv_op_identifier & conv_op_marker.
(resort_type_method_vec): Don't skip conv-ops.
(finish_struct_methods, warn_hidden): Likewise.
* name-lookup.h (lookup_all_conversions): Delete.
* name-lookup.c (lookup_conversion_operator): Replace with ...
(extract_conversion_operator): ... this.
(lookup_fnfields_slot_nolazy): Find conv-ops by name.
(lookup_all_conversions): Delete.
* pt.c (check_explicit_specialization): Find conv-ops by name.
* search.c (lookup_conversions_r): Likewise.

From-SVN: r251348

PR middle-end/81908 - FAIL: gfortran.dg/alloc_comp_auto_array_2.f90 -O3 -g -m32

gcc/ChangeLog:

PR middle-end/81908
* gimple-fold.c (size_must_be_zero_p): New function.
(gimple_fold_builtin_memory_op): Call it.

gcc/testsuite/ChangeLog:

PR middle-end/81908
* gcc.dg/tree-ssa/builtins-folding-gimple-2.c: New test.
* gcc.dg/tree-ssa/builtins-folding-gimple-3.c: New test.
* gcc.dg/tree-ssa/pr81908.c: New test.

From-SVN: r251347

Daily bump.

From-SVN: r251346

stl_list.h [!_GLIBCXX_INLINE_VERSION](_List_base<>::_S_distance): Remove.

2017-08-24  François Dumont  <fdumont@gcc.gnu.org>

* include/bits/stl_list.h
[!_GLIBCXX_INLINE_VERSION](_List_base<>::_S_distance): Remove.
(_List_impl(_Node_alloc_type&&, _List_impl&&)): New.
(_List_base(_Node_alloc_type&&, _List_base&&)): New, use latter.
[!_GLIBCXX_INLINE_VERSION](_List_base(_Node_alloc_type&&,_List_base&&)):
Remove.
(_List_base(_Node_alloc_type&&)): New.
[!_GLIBCXX_INLINE_VERSION](_List_base<>::_M_distance): Remove.
[!_GLIBCXX_INLINE_VERSION](_List_base<>::_M_node_count): Remove.
(list<>::_M_node_count): New.
(list<>::size()): Adapt to call latter.
(list<>::_S_distance(const_iterator, const_iterator)): New.
(list<>::splice(iterator, list&, const_iterator, const_iterator)):
Adapt to call latter.
(list(list&&, const allocator_type&, true_type)): New.
(list(list&&, const allocator_type&, false_type)): New.
(list(list&&, const allocator_type&)): Adapt to call latters.

From-SVN: r251342

rs6000.opt (-mpower9-dform-scalar): Delete undocumented switches.

[gcc]
2017-08-24  Michael Meissner  <meissner@linux.vnet.ibm.com>

* config/rs6000/rs6000.opt (-mpower9-dform-scalar): Delete
undocumented switches.
(-mpower9-dform-vector): Likewise.
(-mpower9-dform): Likewise.
* config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Update
comments to delete references to -mpower9-dform* switches.
* config/rs6000/predicates.md (vsx_quad_dform_memory_operand):
Delete reference to -mpower9-dform* switches, test for
-mpower9-vector instead.
* config/rs6000/rs6000-cpus.def (ISA_3_0_MASKS_SERVER): Likewise.
(OTHER_P9_VECTOR_MASKS): Likewise.
(POWERPC_MASKS): Likewise.
* config/rs6000/rs6000.c (rs6000_setup_reg_addr_masks): Change
tests against -mpower9-dform* to -mpower9-vector.  Delete code
that checked for -mpower9-dform* consistancy with other options.
Add test for -mpower9-misc to enable other power9 switches.
(rs6000_init_hard_regno_mode_ok): Likewise.
(rs6000_option_override_internal): Likewise.
(rs6000_emit_prologue): Likewise.
(rs6000_emit_epilogue): Likewise.
(rs6000_opt_masks): Delete -mpower9-dform-{scalar,vector}.
(rs6000_disable_incompatiable_switches): Delete -mpower9-dform.
(emit_fusion_p9_load): Change tests for -mpower9-dform-scalar
-mpower9-vector.
(emit_fusion_p9_store): Likewise.
* config/rs6000/rs6000.h (TARGET_P9_DFORM_SCALAR): Delete
resetting these macros if the assembler does not support ISA 3.0
instructions.
(TARGET_P9_DFORM_VECTOR): Likewise.
* config/rs6000/rs6000.md (peepholes to optimize altivec memory):
Change to use -mpower9-vector instead of -mpower9-dform-scalar.

[gcc/testsuite]
2017-08-24  Michael Meissner  <meissner@linux.vnet.ibm.com>

* gcc.target/powerpc/dform-1.c: Delete -mpower9-dform*
options.
* gcc.target/powerpc/dform-2.c: Likewise.
* gcc.target/powerpc/dform-3.c: Likewise.
* gcc.target/powerpc/pr71656-1.c: Likewise.
* gcc.target/powerpc/pr71656-2.c: Likewise.
* gcc.target/powerpc/pr80103-1.c: Likewise.
* gcc.target/powerpc/pr80098-1.c: Likewise.

From-SVN: r251341

Conversion operators kept on single overload set

Conversion operators kept on single overload set
* class.c (add_method): Keep all conv-ops on one slot.
* name-lookup.c (lookup_conversion_operator): Pull the desired
conv op out of overload set.
* search.c (lookup_conversions_r): Lose template/non-template
distinction.
(lookup_conversions): Likewise.

From-SVN: r251340

Adds the powerpc equivalent mm_malloc.h header which is needed by xmmintrin.h...

Adds the powerpc equivalent mm_malloc.h header which is needed by
xmmintrin.h and cleans up some noisy warnings from the previous MMX
commit.

From-SVN: r251339

target-supports.exp: Group together target-dependant checks.

* lib/target-supports.exp: Group together target-dependant checks.

From-SVN: r251338

re PR tree-optimization/81913 (wrong code at -O1)

PR tree-optimization/81913
* tree-ssa-loop-niter.c (number_of_iterations_cond): Skip niter
analysis when either IVs in condition can wrap.

gcc/testsuite
* gcc.c-torture/execute/pr81913.c: New test.
* gcc.dg/tree-ssa/loop-niter-1.c: New test.
* gcc.dg/tree-ssa/loop-niter-2.c: New test.

From-SVN: r251337

C: fix logic within c_expr::get_location

In r251239 I added a c_expr::get_location method for use by
c_parser_expr_list for building the vec<location_t> for
an expression list, rather than using the location of the first token.

When determining whether to use the location within the tree node,
or fall back to the range in the c_expr, I used EXPR_CAN_HAVE_LOCATION,
rather than EXPR_HAS_LOCATION.  This meant that any tree nodes of kinds
that *can* have a location but which erroneously had
   EXPR_LOCATION (value) == UNKNOWN_LOCATION
had that value added to the vec<location_t>, leading to missing
location information when reporting on the issue
(seen with gcc.dg/Wtraditional-conversion-2.c for m68k).

This patch addresses this in two ways:

(a) it fixes the specific issue in this failing test case, by
    setting up the location properly on the EXCESS_PRECISION_EXPR.

(b) updating c_expr::get_location by only using the EXPR_LOCATION
    if it's sane.  Arguably this is papering over bugs, but they are
    pre-existing ones exposed by r251239, and I'd rather have this
    fix in place than play whack-a-mole on any other such "missing
    location" bugs that are lurking in the codebase.

gcc/c/ChangeLog:
* c-tree.h (c_expr::get_location) Use EXPR_HAS_LOCATION rather
than CAN_HAVE_LOCATION_P when determining whether to use the
location_t value within "value".

gcc/c-family/ChangeLog:
* c-lex.c (interpret_float): Use token location
when building an EXCESS_PRECISION_EXPR.

From-SVN: r251335

dwarf2out.c (MAX_ARTIFICIAL_LABEL_BYTES): Increase to 40.

* dwarf2out.c (MAX_ARTIFICIAL_LABEL_BYTES): Increase to 40.
* dwarf2cfi.c (MAX_ARTIFICIAL_LABEL_BYTES): Remove.

From-SVN: r251334

re PR target/81921 (Fails to always-inline intrinsics with -flto)

2017-08-23  Richard Biener  <rguenther@suse.de>

        PR target/81921
        * targhooks.c (default_target_can_inline_p): Properly
        use target_option_default_node when no DECL_FUNCTION_SPECIFIC_TARGET
        is present and always compare.
        * config/i386/i386.c (ix86_valid_target_attribute_tree): Do not
imply -mfpmath=sse from TARGET_SSE_P.
        (ix86_can_inline_p): Properly use target_option_default_node when
        no DECL_FUNCTION_SPECIFIC_TARGET is present and always compare.

* gcc.target/i386/pr81921.c: New testcase.

From-SVN: r251333

re PR debug/81936 (ICE in dwarf2out_die_ref_for_decl, at dwarf2out.c:5543)

2017-08-24  Richard Biener  <rguenther@suse.de>

PR debug/81936
* dwarf2out.c (output_die): Handle flag_generate_offload like
flag_generate_lto.
(output_comp_unit): Likewise.
(gen_array_type_die): Likewise.
(dwarf2out_early_finish): Likewise.
(note_variable_value_in_expr): Likewise.
(dwarf2out_finish): Likewise.  Adjust assert.
* cgraphunit.c (symbol_table::compile): Move setting of
flag_generate_offload earlier ...
(symbol_table::finalize_compilation_unit): ... here, before
early debug finalization.

From-SVN: r251332

i386.c: Include symbol-summary.h, ipa-prop.h and ipa-fnsummary.h.

2017-08-24  Richard Biener  <rguenther@suse.de>

* config/i386/i386.c: Include symbol-summary.h, ipa-prop.h
and ipa-fnsummary.h.
(ix86_can_inline_p): When ix86_fpmath flags do not match
check whether the callee uses FP math at all.

From-SVN: r251330

re PR middle-end/81931 (r251260 breaks many tests on powerpc64)

PR middle-end/81931
* tree-ssanames.c (get_nonzero_bits): Use element_precision
instead of TYPE_PRECISION.

From-SVN: r251328

Make more use of subreg_offset_from_lsb

This patch makes use of the subreg_offset_from_lsb function
added by an earlier patch in the SVE series.

2017-08-24  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood  <david.sherwood@arm.com>

gcc/
* combine.c (make_extraction): Use subreg_offset_from_lsb.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r251326

Daily bump.

From-SVN: r251325

PR target/80969 - Fix ICE with -mabi=ms -mavx512f, reduce wasted space when realigning stack.

2017-08-23  Daniel Santos  <daniel.santos@pobox.com>

* config/i386/i386.h (ix86_frame::stack_realign_allocate_offset):
Remove field.
(ix86_frame::stack_realign_allocate): New field.
(struct machine_frame_state): Modify comments.
(machine_frame_state::sp_realigned_fp_end): New field.
* config/i386/i386.c (ix86_compute_frame_layout): Rework stack frame
layout calculation.
(sp_valid_at): Add assertion to assure no attempt to access invalid
offset of a realigned stack.
(fp_valid_at): Likewise.
(choose_baseaddr): Modify comments.
(ix86_emit_outlined_ms2sysv_save): Adjust to changes in
ix86_expand_prologue.
(ix86_expand_prologue): Modify stack realignment and allocation.
(ix86_expand_epilogue): Modify comments.
* doc/sourcebuild.texi: Add documentation for target selectors avx2,
avx2_runtime, avx512f, and avx512f_runtime.

2017-08-23  Daniel Santos  <daniel.santos@pobox.com>

* gcc.target/i386/pr80969-1.c: New testcase.
* gcc.target/i386/pr80969-2a.c: Likewise.
* gcc.target/i386/pr80969-2.c: Likewise.
* gcc.target/i386/pr80969-3.c: Likewise.
* gcc.target/i386/pr80969-4a.c: Likewise.
* gcc.target/i386/pr80969-4b.c: Likewise.
* gcc.target/i386/pr80969-4.c: Likewise.
* gcc.target/i386/pr80969-4.h: New header common to pr80969-4*.c
* lib/target-supports.exp (check_avx512_os_support_available,
check_avx512f_hw_available, check_effective_target_avx512f_runtime):
New proceedures for target avx512f and avx512f_runtime selectors.
(check_avx2_hw_available): Fix breakage due NULL being undefined.

From-SVN: r251321

cp-tree.h (lookup_field_1, [...]): Move declatations to ...

* cp-tree.h (lookup_field_1, lookup_fnfields_slot,
lookup_fnfields_slot_nolazy, lookup_all_conversions): Move
declatations to ...
* name-lookup.h (lookup_field_1, lookup_fnfields_slot,
lookup_fnfields_slot_nolazy, lookup_all_conversions): ... here.
* search.c (lookup_conversion_operator,
lookup_fnfields_slot_nolazy, lookup_field_1, lookup_fnfields_slot,
lookup_all_conversions): Move to ...
* name-lookup.c (lookup_conversion_operator,
lookup_fnfields_slot_nolazy, lookup_field_1, lookup_fnfields_slot,
lookup_all_conversions): ... here.

From-SVN: r251319

semantics.c (finish_member_declaration): Move USING_DECL check earlier.

* semantics.c (finish_member_declaration): Move USING_DECL check
earlier.  Always set C++ linkage.  Commonize TYPE_FIELD and
template decl list insertion.

From-SVN: r251317

cp-tree.h (maybe_version_functions): Declare.

* cp-tree.h (maybe_version_functions): Declare.
* decl.c (decls_match): Break function versioning check to
separate function.  Call it.
(maybe_version_functions): Broken out of decls_match.
* class.c (add_method): Use maybe_version_functions.

From-SVN: r251316

cp-tree.h (print_search_statistics, [...]): Don't declare.

* cp-tree.h (print_search_statistics,
reinit_search_statistics): Don't declare.
* search.c (n_fields_searched, n_calls_lookup_field,
n_calls_lookup_field_1, n_calls_lookup_fnfields,
n_calls_lookup_fnfields_1, n_calls_get_base_type,
n_outer_fields_searched, n_contexts_saved): Delete.
(lookup_field_1, lookup_member,
lookup_fnfields_slot_nolazy): Remove stat gathering.
(print_search_statistics, reinit_search_statistics): Delete.
* tree.c (cxx_print_statistics): Don't print search stats.

From-SVN: r251315

testsuite: add param-type-mismatch.c/C testcases as a baseline

gcc/testsuite/ChangeLog:
* g++.dg/diagnostic/param-type-mismatch.C: New test acse.
* gcc.dg/param-type-mismatch.c: New test case.

From-SVN: r251312

i386.opt: Remove unneeded Init(0) initializations.

* config/i386/i386.opt: Remove unneeded Init(0) initializations.
(mstackrealign): Do not init to -1.
* config/i386/i386.c (ix86_option_override_internal):
Check opts_set, not opts when setting default value of
opts->x_ix86_force_align_arg_pointer.

From-SVN: r251311

fold-vec-perm-char.c: New.

[gcc/testsuite]

2017-08-23  Will Schmidt  <will_schmidt@vnet.ibm.com>

* gcc.target/powerpc/fold-vec-perm-char.c: New.
* gcc.target/powerpc/fold-vec-perm-double.c: New.
* gcc.target/powerpc/fold-vec-perm-float.c: New.
* gcc.target/powerpc/fold-vec-perm-int.c: New.
* gcc.target/powerpc/fold-vec-perm-longlong.c: New.
* gcc.target/powerpc/fold-vec-perm-pixel.c: New.
* gcc.target/powerpc/fold-vec-perm-short.c: New.

From-SVN: r251310

ChangeLog: Fix last entry.

2017-08-23  Richard Biener  <rguenther@suse.de>

        * testsuite/ChangeLog: Fix last entry.

From-SVN: r251309

function.c (fndecl_name): Use verbosity 1 (no arguments) for lang_hooks.decl_printable_name.

2017-08-23  Richard Biener  <rguenther@suse.de>

* function.c (fndecl_name): Use verbosity 1 (no arguments) for
lang_hooks.decl_printable_name.
* print-rtl-function.c (print_rtx_function): Likewise.
* tree-pretty-print.c (dump_function_header): Likewise.

* g++.dg/cpp1y/constexpr-instantiate.C: Adjust.
* g++.dg/tree-ssa/pr45605.C: Likewise.
* gnat.dg/noinline2.ad: Likewise.b
* gnat.dg/renaming6.ad: Likewise.b
* gnat.dg/renaming6.ad: Likewise.s
* gnat.dg/specs/noinline3.ad: Likewise.s

From-SVN: r251308

re PR lto/81940 (internal compiler error: in dwarf2out_abstract_function, at dwarf2out.c:21613)

2017-08-23  Richard Biener  <rguenther@suse.de>

PR lto/81940
* dwarf2out.c (dwarf2out_abstract_function): Handle LTO with
-g0 at compile-time.

* g++.dg/lto/pr81940_0.C: New testcase.

From-SVN: r251306

re PR middle-end/19706 (Recognize common Fortran usages of copysign.)

2017-08-23  Tamar Christina  <tamar.christina@arm.com>

PR middle-end/19706
* doc/sourcebuild.texi (Other hardware attributes):
Document xorsign.

gcc/testsuite
2017-08-23  Tamar Christina  <tamar.christina@arm.com>

PR middle-end/19706
* gcc.dg/tree-ssa/pr19706.c: New.
* lib/target-supports.exp (check_effective_target_xorsign): New.

From-SVN: r251304

re PR middle-end/19706 (Recognize common Fortran usages of copysign.)

2017-08-23  Tamar Christina  <tamar.christina@arm.com>

PR middle-end/19706
* tree-ssa-math-opts.c (convert_expand_mult_copysign):
Fix single-use check.

From-SVN: r251303

Fix broken MinGW build of gcc.c

2017-08-23  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * gcc.c (execute): Only test for SIGKILL and SIGQUIT if available.

From-SVN: r251302

Daily bump.

From-SVN: r251300

Move entry to correct ChangeLog.

From-SVN: r251294

Add missing ChangeLog entry for previous commit

From-SVN: r251290

docs: Explain how to use multiple file-name patterns in RUNTESTFLAGS

* doc/install.texi: Modify to add more details on running
selected tests.

From-SVN: r251289

PR target/71958: Error on -mx32 with -mabi=ms

gcc/ChangeLog:
2017-08-11  Daniel Santos  <daniel.santos@pobox.com>

* config/i386/i386.c (ix86_option_override_internal): Error when
-mx32 is combined with -mabi=ms.
(ix86_function_type_abi): Limit errors for mixing -mx32 with
attribute ms_abi.

gcc/testsuite/ChangeLog:
2017-08-11  Daniel Santos  <daniel.santos@pobox.com>

* gcc.target/i386/pr71958.c: New test to verify error on -mx32
and -mabi=ms
  * gcc.target/i386/pr64409.c: Modify to only run on x32.
* gcc.target/i386/pr46470.c: Modify to skip x32 target.
  * gcc.target/i386/pr66275.c: Likewise.
  * gcc.target/i386/pr68018.c: Likewise.

From-SVN: r251287

re PR tree-optimization/81488 (gcc goes off the limits allocating memory in gimple-ssa-strength-reduction.c)

2017-08-22  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

PR tree-optimization/81488
* gimple-ssa-strength-reduction (struct slsr_cand_d): Add visited
and cached_basis fields.
(MAX_SPREAD): New constant.
(alloc_cand_and_find_basis): Initialize new fields.
(clear_visited): New function.
(create_phi_basis_1): Rename from create_phi_basis, set visited
and cached_basis fields.
(create_phi_basis): New wrapper function.
(phi_add_costs_1): Rename from phi_add_costs, add spread
parameter, set visited field, short-circuit when limits reached.
(phi_add_costs): New wrapper function.
(record_phi_increments_1): Rename from record_phi_increments, set
visited field.
(record_phi_increments): New wrapper function.
(phi_incr_cost_1): Rename from phi_incr_cost, set visited field.
(phi_incr_cost): New wrapper function.
(all_phi_incrs_profitable_1): Rename from
all_phi_incrs_profitable, set visited field.
(all_phi_incrs_profitable): New wrapper function.

From-SVN: r251286

Make more use of paradoxical_subreg_p

This patch makes more use of the existing paradoxical_subreg_p
predicate and also adds a version that operates on outer and
inner modes.

Some of the affected tests were based on GET_MODE_SIZE rather than
GET_MODE_PRECISION and so the patch could change the result for modes
that have the same size but different precisions.  I think in each
case the change should be a no-op or more correct, since a mode with
precision N bits can't be expected to hold all of a mode with precision
M>N bits.

The patch changes the branch taken in simplify_subreg for modes with
equal precision, but the new form matches the commentary more closely.
Both branches should be equally good in that situation.

2017-08-22  Richard Sandiford  <richard.sandiford@linaro.org>
    Alan Hayward  <alan.hayward@arm.com>
    David Sherwood  <david.sherwood@arm.com>

gcc/
* rtl.h (paradoxical_subreg_p): Define inline, and add a version
that takes the outer and inner modes.
* doc/rtl.texi: Use paradoxical_subreg_p instead of a GET_MODE_SIZE
comparison as the canonical test for a paradoxical subreg.
* combine.c (simplify_set): Use paradoxical_subreg_p.
(make_extraction): Likewise.
(force_to_mode): Likewise.
(rtx_equal_for_field_assignment_p): Likewise.
(gen_lowpart_for_combine): Likewise.
(simplify_comparison): Likewise.
* cse.c (equiv_constant): Likewise.
* expmed.c (store_bit_field_1): Likewise.
* final.c (alter_subreg): Likewise.
* fwprop.c (propagate_rtx): Likewise.
(forward_propagate_subreg): Likewise.
* ira-conflicts.c (ira_build_conflicts): Likewise.
* lower-subreg.c (simplify_gen_subreg_concatn): Likewise.
* lra-constraints.c (curr_insn_transform): Likewise.
(split_reg): Likewise.
* lra-eliminations.c (move_plus_up): Likewise.
(lra_eliminate_regs_1): Likewise.
* recog.c (general_operand): Likewise.
* ree.c (combine_reaching_defs): Likewise.
* reload.c (push_reload): Likewise.
(find_reloads): Likewise.
* reload1.c (elimination_effects): Likewise.
(compute_reload_subreg_offset): Likewise.
(choose_reload_regs): Likewise.
* rtlanal.c (subreg_lsb_1): Likewise.
* simplify-rtx.c (simplify_unary_operation_1): Likewise.
(simplify_subreg): Likewise.
* var-tracking.c (track_loc_p): Likewise.
* emit-rtl.c (byte_lowpart_offset): Likewise.
(paradoxical_subreg_p): Delete out-of-line definition.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>
From-SVN: r251282

fold-vec-sums-int.c: New.

[gcc/testsuite]

2017-08-22  Will Schmidt  <will_schmidt@vnet.ibm.com>

* gcc.target/powerpc/fold-vec-sums-int.c: New.

From-SVN: r251281

re PR tree-optimization/81741 (Misoptimisation : replacing a constant field read access by a function call)

PR tree-optimization/81741
PR tree-optimization/71947
* tree-ssa-dom.c: Include tree-inline.h.
(record_temporary_equivalences): Only record SSA_NAME = SSA_NAME
equivalences if one is more expensive to compute than the other.
* tree-ssa-scopedtables.h (class const_or_copies): Make
record_const_or_copy_raw method private.
(class avail_exprs_stack): New method simplify_binary_operation.
* tree-ssa-scopedtables.c (avail_exprs_stack::lookup_avail_expr): Call
avail_exprs_stack::simplify_binary_operation as needed.
(avail_exprs_stack::simplify_binary_operation): New function.

PR tree-optimization/81741
PR tree-optimization/71947
* gcc.dg/tree-ssa/pr81741.c: New test.
* gcc.dg/tree-ssa/pr71947-7.c: New test.
* gcc.dg/tree-ssa/pr71947-8.c: New test.
* gcc.dg/tree-ssa/pr71947-9.c: New test.
* gcc.dg/tree-ssa/pr71941-1.c: Tweak expected output.
* gcc.dg/tree-ssa/pr71941-2.c: Tweak expected output.
* gcc.dg/tree-ssa/pr71941-3.c: Tweak expected output.
* gcc.dg/tree-ssa/20030922-2.c: xfail.

From-SVN: r251279

re PR lto/81925 (early lto debug link failure on aarch64_be)

2017-08-22  Richard Biener  <rguenther@suse.de>

PR lto/81925
* simple-object-elf.c (simple_object_elf_write_shdr): Adjust
type of sh_addralign and sh_entsize and properly write
sh_entsize as Elf_Addr.
(simple_object_elf_write_to_file): Read sh_entsize as Elf_Addr.

From-SVN: r251276

[PowerPC/RTEMS] Enable -mcmodel option

gcc/
* config.gcc (powerpc-*-rtems*): Add rs6000/linux64.opt.
* config/rs6000/rtems.h (ASM_PREFERRED_EH_DATA_FORMAT): New define.
(DOT_SYMBOLS): Likewise.
(MINIMAL_TOC_SECTION_ASM_OP): Likewise.
(RELOCATABLE_NEEDS_FIXUP): Likewise.
(RS6000_ABI_NAME): Likewise.
(TARGET_CMODEL): Likewise.
(TOC_SECTION_ASM_OP): Likewise.
(SET_CMODEL): New macro.
(SUBSUBTARGET_OVERRIDE_OPTIONS): Evaluate cmodel options.

From-SVN: r251275

tree-inline.c (remap_type_1): Change asserts on TYPE_SIZE[_UNIT] to allow for free-lang-data replacements...

2017-08-22  Richard Biener  <rguenther@suse.de>

* tree-inline.c (remap_type_1): Change asserts on TYPE_SIZE[_UNIT]
to allow for free-lang-data replacements similar to verify_type_variant.

From-SVN: r251274

re PR c++/80287 (C++ crash with __attribute((may_alias)))

2017-08-22  Yvan Roux  <yvan.roux@linaro.org>

        PR c++/80287
        * g++.dg/pr80287.C: New test.

From-SVN: r251268