Add std::copy_n istreambuf_iterator specialization

* include/bits/stl_algo.h
(__copy_n_a(_IIte, _Size, _OIte)): New.
(__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New declaration.
(__copy_n(_IIte, _Size, _OIte, input_iterator_tag)): Adapt to use
latter.
* include/bits/streambuf_iterator.h (istreambuf_iterator<>): Declare
std::__copy_n_a friend.
(__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New.
* testsuite/25_algorithms/copy_n/istreambuf_iterator/1.cc: New.
* testsuite/25_algorithms/copy_n/istreambuf_iterator/1_neg.cc: New.
* testsuite/25_algorithms/copy_n/istreambuf_iterator/2_neg.cc: New.

From-SVN: r276638

Add C++11 __iterator_category_t template alias.

* include/bits/stl_iterator_base_types.h (__iterator_category_t): Define
for C++11.
(_RequireInputIte): Likewise and use __enable_if_t.
* include/std/numeric
(__is_random_access_iter): Use __iterator_category_t.

From-SVN: r276637

Add std::copy_n __glibcxx_requires_can_increment checks.

* include/bits/stl_algo.h (copy_n): Add __glibcxx_requires_can_increment
debug checks.
* testsuite/25_algorithms/copy_n/debug/1_neg.cc: New.
* testsuite/25_algorithms/copy_n/debug/2_neg.cc: New.

From-SVN: r276636

[Darwin] Fix some format-related build warnings.

This fixes two error messages to avoid punctuation and contracted
negations.

gcc/ChangeLog:

2019-10-06  Iain Sandoe  <iain@sandoe.co.uk>

* config/darwin.c (darwin_override_options): Adjust objective-c
ABI version error messages to avoid punctuation and contracted
negations.

From-SVN: r276635

Daily bump.

From-SVN: r276634

2019-0105  Steven G. Kargl  <kargl@gcc.gnu.org>

In my previous commit, I managed to include a duplicate copy
of the ChangeLog file.  This commit removes the duplicate
portion.

From-SVN: r276630

ipa-inline.c: Fix type; compute size rather than self_size for size of caller function.

* ipa-inline.c: Fix type; compute size rather than self_size
for size of caller function.

From-SVN: r276629

re PR fortran/47054 (Compilation error when cray pointers are declared in both host and internal subroutines)

2019-10-05  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/47045
* decl.c (variable_decl): Do not search parent namespace for symbol.

2019-10-05  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/47045
* gfortran.dg/pr47054_1.f90: New test
* gfortran.dg/pr47054_2.f90: Ditto.

From-SVN: r276627

re PR fortran/91497 (-Wconversion warns when doing explicit type conversion)

2019-10-05  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/91497
* gfortran.dg/pr91497.f90: Run on i?86-*-* and x86_64-*-* only.

From-SVN: r276626

re PR fortran/91926 (assumed rank optional)

2019-10-05  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/91926
* trans-expr.c (gfc_conv_gfc_desc_to_cfi_desc): Correct the
assignment of the attribute field to account correctly for an
assumed shape dummy. Assign separately to the gfc and cfi
descriptors since the atribute can be different. Add btanch to
correctly handle missing optional dummies.

2019-10-05  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/91926
* gfortran.dg/ISO_Fortran_binding_13.f90 : New test.
* gfortran.dg/ISO_Fortran_binding_13.c : Additional source.
* gfortran.dg/ISO_Fortran_binding_14.f90 : New test.

2019-10-05  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/91926
* runtime/ISO_Fortran_binding.c (cfi_desc_to_gfc_desc): Do not
modify the bounds and offset for CFI_other.

From-SVN: r276624

[Darwin] Amend section for constants with reloactions.

Darwin's linker doesn't like text section relocations (they require special
enabling).  At least, the Fortran FE seems to generate cases where the
initialiser for a pointer constant can need a relocation.  We can handle
this by special-casing SECCAT_RODATA when the relocation is present by
placing the constant in the .const_data section.

gcc/ChangeLog:

2019-10-05  Iain Sandoe  <iain@sandoe.co.uk>

PR target/59888
* config/darwin.c (darwin_rodata_section): Add relocation flag,
choose const_data section for constants with relocations.
(machopic_select_section): Pass relocation flag to
darwin_rodata_section ().

From-SVN: r276623

PR c++/91369 - Implement P0784R7: constexpr new

PR c++/91369 - Implement P0784R7: constexpr new
c-family/
* c-cppbuiltin.c (c_cpp_builtins): Predefine
__cpp_constexpr_dynamic_alloc=201907 for -std=c++2a.
cp/
* cp-tree.h (enum cp_tree_index): Add CPTI_HEAP_UNINIT_IDENTIFIER,
CPTI_HEAP_IDENTIFIER and CPTI_HEAP_DELETED_IDENTIFIER.
(heap_uninit_identifier, heap_identifier, heap_deleted_identifier):
Define.
(type_has_constexpr_destructor, build_new_constexpr_heap_type,
cxx_constant_dtor): Declare.
* class.c (type_maybe_constexpr_default_constructor): Make static.
(type_maybe_constexpr_destructor, type_has_constexpr_destructor): New
functions.
(finalize_literal_type_property): For c++2a, don't clear
CLASSTYPE_LITERAL_P for types without trivial destructors unless they
have non-constexpr destructors.
(explain_non_literal_class): For c++2a, complain about non-constexpr
destructors rather than about non-trivial destructors.
* constexpr.c: Include stor-layout.h.
(struct constexpr_global_ctx): New type.
(struct constexpr_ctx): Add global field, remove values and
constexpr_ops_count.
(cxx_replaceable_global_alloc_fn): New inline function.
(cxx_eval_call_expression): For c++2a allow calls to replaceable
global allocation functions, for new return address of a heap uninit
var, for delete record its deletion.  Change ctx->values->{get,put} to
ctx->global->values.{get,put}.
(non_const_var_error): Add auto_diagnostic_group sentinel.  Emit
special diagnostics for heap variables.
(cxx_eval_store_expression): Change ctx->values->{get,put} to
ctx->global->values.{get,put}.
(cxx_eval_loop_expr): Initialize jump_target if NULL.  Change
new_ctx.values->remove to ctx->global->values.remove.
(cxx_eval_constant_expression): Change *ctx->constexpr_ops_count
to ctx->global->constexpr_ops_count.  Change ctx->values->{get,put} to
ctx->global->values.{get,put}.
<case NOP_EXPR>: Formatting fix.  On cast of replaceable global
allocation function to some pointer type, adjust the type of
the heap variable and change name from heap_uninit_identifier
to heap_identifier.
(find_heap_var_refs): New function.
(cxx_eval_outermost_constant_expr): Add constexpr_dtor argument,
handle evaluation of constexpr dtors and add tracking of heap
variables.  Use tf_no_cleanup for get_target_expr_with_sfinae.
(cxx_constant_value): Adjust cxx_eval_outermost_constant_expr caller.
(cxx_constant_dtor): New function.
(maybe_constant_value, fold_non_dependent_expr_template,
maybe_constant_init_1): Adjust cxx_eval_outermost_constant_expr
callers.
(potential_constant_expression_1): Ignore clobbers.  Allow
COND_EXPR_IS_VEC_DELETE for c++2a.
* decl.c (initialize_predefined_identifiers): Add heap identifiers.
(decl_maybe_constant_destruction): New function.
(cp_finish_decl): Don't clear TREE_READONLY for constexpr variables
with non-trivial, but constexpr destructors.
(register_dtor_fn): For constexpr variables with constexpr non-trivial
destructors call cxx_maybe_build_cleanup instead of adding destructor
calls at runtime.
(expand_static_init): For constexpr variables with constexpr
non-trivial destructors call cxx_maybe_build_cleanup.
(grokdeclarator): Allow constexpr destructors for c++2a.  Formatting
fix.
(cxx_maybe_build_cleanup): For constexpr variables with constexpr
non-trivial destructors call cxx_constant_dtor instead of adding
destructor calls at runtime.
* init.c: Include stor-layout.h.
(build_new_constexpr_heap_type, maybe_wrap_new_for_constexpr): New
functions.
(build_new_1): For c++2a and new[], add cast around the alloc call
to help constexpr evaluation figure out the type of the heap storage.
(build_vec_delete_1): Set DECL_INITIAL of tbase and emit a DECL_EXPR
for it instead of initializing an uninitialized variable.
* method.c: Include intl.h.
(SFK_CTOR_P, SFK_DTOR_P, SFK_ASSIGN_P, SFK_COPY_P, SFK_MOVE_P): Move
definitions earlier.
(process_subob_fn): Add sfk argument, adjust non-constexpr call
diagnostics based on it.
(walk_field_subobs): Formatting fixes.  Adjust process_subob_fn caller.
(synthesized_method_base_walk): Likewise.
(synthesized_method_walk): Set *constexpr_p to true for dtors in c++2a.
Fix up DR number in comment.
(implicitly_declare_fn): Formatting fix.
* typeck2.c (store_init_value): Don't call cp_fully_fold_init on
initializers of automatic non-constexpr variables in constexpr
functions.
testsuite/
* g++.dg/cpp0x/constexpr-delete2.C: Adjust expected diagnostics for
c++2a.
* g++.dg/cpp0x/locations1.C: Only expect constexpr ~S() diagnostics
in c++17_down, adjust expected wording.
* g++.dg/cpp1y/constexpr-new.C: Only expect diagnostics in c++17_down.
* g++.dg/cpp2a/constexpr-dtor1.C: New test.
* g++.dg/cpp2a/constexpr-dtor2.C: New test.
* g++.dg/cpp2a/constexpr-dtor3.C: New test.
* g++.dg/cpp2a/constexpr-new1.C: New test.
* g++.dg/cpp2a/constexpr-new2.C: New test.
* g++.dg/cpp2a/constexpr-new3.C: New test.
* g++.dg/cpp2a/constexpr-new4.C: New test.
* g++.dg/cpp2a/feat-cxx2a.C: Add __cpp_constinit and
__cpp_constexpr_dynamic_alloc tests.  Tweak __cpp_* tests for c++2a
features to use style like older features, including #ifdef test.
* g++.dg/ext/is_literal_type3.C: New test.

From-SVN: r276622

re PR tree-optimization/91734 (gcc skip an if statement  with "-O1 -ffast-math")

PR tree-optimization/91734
* generic-match-head.c: Include fold-const-call.h.
* match.pd (sqrt(x) cmp c): Check the boundary value and
in case inexact computation of c*c affects comparison of the boundary,
turn LT_EXPR into LE_EXPR, GE_EXPR into GT_EXPR, LE_EXPR into LT_EXPR
or GT_EXPR into GE_EXPR.  Punt for sqrt comparisons against NaN and
for -frounding-math.  For c2, try the next smaller or larger floating
point constant depending on comparison code and if it has the same
sqrt as c2, use it instead of c2.

* gcc.dg/pr91734.c: New test.

From-SVN: r276621

Daily bump.

From-SVN: r276618

Add strftime format checking support for C2x %OB and %Ob (bug 82752).

C2x adds strftime %OB and %Ob formats, for alternative forms of month
names (for mainly Slavic languages where a month name on its own is
declined differently from a month name together with a date within
that month).  This patch adds corresponding format checking support.
(glibc support for these formats was added in glibc 2.27.)

Bootstrapped with no regressions on x86_64-pc-linux-gnu.

PR c/82752
gcc/c-family:
* c-format.c (C_STD_VER): Handle C2x.
(C_STD_NAME): Likewise.
(strftime_flag_specs): Add 'O' modifier with 'p' flag.
(time_char_table): Use separate entry for 'B' and 'b', with 'O'
modifier allowed and 'p' flag.
* c-format.h (enum format_std_version): Add STD_C2X.
(struct format_char_info): Mention 'p' in comment on flags2.

gcc/testsuite:
* gcc.dg/format/c2x-strftime-1.c: New test.

From-SVN: r276605

PR middle-end/91977 - missing -Wstringop-overflow on memcpy into a pointer plus offset

gcc/ChangeLog:

PR middle-end/91977
* tree-ssa-strlen.c (count_nonzero_bytes): Handle assignments with
MEM_REF right operand.  Avoid failing for MEM_REF assignments from
uninitialized objects.

gcc/testsuite/ChangeLog:

PR middle-end/91977
* gcc.dg/Wstringop-overflow-18.c: New test.

From-SVN: r276603

builtins.c (compute_objsize): Add an argument.

gcc/ChangeLog:

* builtins.c (compute_objsize): Add an argument.
* tree-object-size.c (addr_object_size): Same.
(compute_builtin_object_size): Same.
* tree-object-size.h (compute_builtin_object): Same.

gcc/testsuite/ChangeLog:

* gcc.dg/Wstringop-overflow-17.c: New test.

From-SVN: r276602

PR fortran.91959

2019-10-04  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran.91959
* fortran/decl.c (variable_decl): Re-arrange code for matching %FILL.

2019-10-04  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran.91959
* gfortran.dg/pr91959.f90: New test.

From-SVN: r276601

Improve _GLIBCXX_DEBUG safe iterator range size computation.

* include/debug/forward_list
(_Sequence_traits<__debug::forward_list<>>::_S_size): Returns __dp_sign
distance when not empty.
* include/debug/list (_Sequence_traits<__debug::list<>>::_S_size):
Likewise.
* include/debug/helper_functions.h (__dp_sign_max_size): New
_Distance_precision enum entry.
(__valid_range_aux(_IIte, _IIte, _Distance_traits<>::__type,
__false_type)): Adapt.
* include/debug/safe_iterator.tcc
(_Safe_iterator<>::_M_get_distance_to(const _Safe_iterator&)): Review
distance computation.

From-SVN: r276600

* ipa-inline.c (inline_insns_single, inline_insns_auto): Fix typo.

From-SVN: r276597

[preprocessor/91991] column location overflow

https://gcc.gnu.org/ml/gcc-patches/2019-10/msg00371.html
PR preprocessor/91991
* line-map.c (linemap_line_start): Clear max_column_hint if we run
out of locations.

From-SVN: r276596

match.pd (sinh (x) / cosh (x)): New simplification rule.

        * match.pd (sinh (x) / cosh (x)): New simplification rule.

        * gcc.dg/sinhovercosh-1.c: New test.

From-SVN: r276595

compiler: include selected constant types during export processing

    The machinery that collects types referenced by expressions that are
    part of inlinable function bodies was missing the types of local named
    constants in certain cases. This patch updates the
    Collect_export_references::expression() hook to look for references to
    local named constants and include their types in the exported set.

    Fixes golang/go#34577.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/198017

From-SVN: r276594

Add missing gimple_call_set_fntype

2019-10-04  Martin Jambor  <mjambor@suse.cz>

* tree-ssa-forwprop.c (simplify_builtin_call): Set gimple call
fntype when switching to calling memcpy instead of memset.

From-SVN: r276593

hash-table.h (hash_table::empty_slow): Don't assign size_t values to int variables.

2019-10-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * hash-table.h (hash_table::empty_slow): Don't assign
        size_t values to int variables.

From-SVN: r276592

expr.c (convert_mode_scalar): Remove shadowing local var.

2019-10-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * expr.c (convert_mode_scalar): Remove shadowing local var.
        (emit_block_move): Rename local vars.
        (block_move_libcall_safe_for_call_parm): Remove shadowing local var.
        (emit_push_insn): Rename local vars.
        (expand_assignment): Fix wrong mode in assign_stack_temp.  Remove
        shadowing local vars.
        (store_constructor): Remove shadowing local vars.  Rename local var.
        (store_field, expand_cond_expr_using_cmove,
        expand_expr_real_2): Remove shadowing local vars.
        (expand_expr_real_1,
        do_store_flag): Remove shadowing local vars.  Rename local vars.

From-SVN: r276591

cgraph.h (FOR_EACH_ALIAS): Avoid shadowing the loop variable.

2019-10-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * cgraph.h (FOR_EACH_ALIAS): Avoid shadowing the loop variable.

From-SVN: r276590

genmatch.c (commutate): Rename local var.

2019-10-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * genmatch.c (commutate): Rename local var.
        (lower_cond): Reuse local var.
        (dt_node::gen, dt_node::gen_kids, dt_node::gen_kids_1,
        dt_operand::gen, dt_operand::gen_gimple_expr,
        dt_simplify::gen): Add a param.  Rename generated vars.
        (decision_tree::insert_operand,
        (capture_info::walk_match, capture_info::walk_result,
        capture_info::walk_c_expr): Rename local vars.
        (expr::gen_transform): Rename generated vars.
        Use snprintf.  Rename local vars.
        (capture::gen_transform, dt_operand::get_name,
        dt_operand::gen_opname): Rename generated vars.
        (write_predicate): Adjust call to gen_kids.
        (parser::get_internal_capture_id): Rename generated vars.
        (parser::parse_expr): Rename local vars.
        (parser::parse_if): Remove local var.
        (parser::parse_pattern, add_operator): Rename local vars.

From-SVN: r276589

Mark C2x built-in functions as such.

Various built-in functions that GCC has as extensions are now standard
functions in C2x.  This patch adds DEF_C2X_BUILTIN and uses it to mark
them as such.  Some of the so-marked functions were previously
DEF_EXT_LIB_BUILTIN, while some DFP ones were DEF_GCC_BUILTIN
(i.e. __builtin_* only); both sets become DEF_C2X_BUILTIN.  This in
turn requires flag_isoc2x to be defined in various front ends using
builtins.def.

As the semantics of the built-in functions should already be tested,
the tests added only verify that they are declared in C2x mode but not
in C11 mode.  The test of DFP built-in functions being declared for
C2x goes in gcc.dg/dfp/, as while such built-in functions currently
don't depend on whether DFP is supported, that looks like a bug to me
(see bug 91985), so it seems best for the tests not to depend on
exactly how that bug might be fixed.

Bootstrapped with no regressions on x86_64-pc-linux-gnu.

gcc:
* builtins.def (DEF_C2X_BUILTIN): New macro.
(exp10, exp10f, exp10l, fabsd32, fabsd64, fabsd128, nand32)
(nand64, nand128, roundeven, roundevenf, roundevenl, strdup)
(strndup): Use DEF_C2X_BUILTIN.
* coretypes.h (enum function_class): Add function_c2x_misc.

gcc/ada:
* gcc-interface/utils.c (flag_isoc2x): New variable.

gcc/brig:
* brig-lang.c (flag_isoc2x): New variable.

gcc/lto:
* lto-lang.c (flag_isoc2x): New variable.

gcc/testsuite:
* gcc.dg/c11-builtins-1.c, gcc.dg/c2x-builtins-1.c,
gcc.dg/dfp/c2x-builtins-dfp-1.c: New tests.

From-SVN: r276588

ira-color.c (update_costs_from_allocno): Call ira_init_register_move_cost_if_necessary.

* ira-color.c (update_costs_from_allocno): Call
ira_init_register_move_cost_if_necessary.

From-SVN: r276587

Build filesystem library with large file support

Enable AC_SYS_LARGEFILE to set the macros needed for large file APIs to
be used by default. We do not want to define those macros in the
public headers that users include. The values of the macros are copied
to a separate file that is only included by the filesystem sources
during the build, and then the macros in <bits/c++config.h> are renamed
so that they don't have any effect in user code including our headers.

Also use larger type for result of filesystem::file_size to avoid
truncation of large values on 32-bit systems (PR 91947).

PR libstdc++/81091
PR libstdc++/91947
* configure.ac: Use AC_SYS_LARGEFILE to enable 64-bit file APIs.
* config.h.in: Regenerate:
* configure: Regenerate:
* include/Makefile.am (${host_builddir}/largefile-config.h): New
target to generate config header for filesystem library.
(${host_builddir}/c++config.h): Rename macros for large file support.
* include/Makefile.in: Regenerate.
* src/c++17/fs_dir.cc: Include new config header.
* src/c++17/fs_ops.cc: Likewise.
(filesystem::file_size): Use uintmax_t for size.
* src/filesystem/dir.cc: Include new config header.
* src/filesystem/ops.cc: Likewise.
(experimental::filesystem::file_size): Use uintmax_t for size.

From-SVN: r276585

Replace uses of std::tr1::unordered_map in testsuite

* testsuite/util/testsuite_abi.h: Use std::unordered_map instead of
std::tr1::unordered_map.
* testsuite/util/testsuite_allocator.h: Likewise.

From-SVN: r276584

h8300.md (cpymemsi): Disable.

* config/h8300/h8300.md (cpymemsi): Disable.
(movmd, movmd_internal_<mode>, movstr, movsd):
(movstr, movsd, stpcpy_internal_<mode>: Likewise.
(movmd splitter, movsd splitter): Likewise.

From-SVN: r276582

range-op.cc (range_tests): Avoid two tests when ints and shorts are the same size.

* range-op.cc (range_tests): Avoid two tests when ints and
shorts are the same size.

From-SVN: r276581

Replace test cases for using automatic variables in equivalence statements.

From-SVN: r276580

compiler: adjust code to avoid shadowing local variables

    Also add a couple of missing calls to free after mpz_get_str.

    This should make the code clean with respect to -Wshadow=local.

    Based on patch by Bernd Edlinger.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/198837

From-SVN: r276579

Fix gcc.target/aarch64/torture/simd-abi-8.c for big-endian

Fix a big-endian failure reported by Christophe.  Also tighten the
test so that it doesn't allow saving and restoring 128-bit vectors
as Q registers.

2019-10-04  Richard Sandiford  <richard.sandiford@arm.com>

gcc/testsuite/
* gcc.target/aarch64/torture/simd-abi-8.c: Use -mlittle-endian.
Check that there are no Q register saves or restores.

From-SVN: r276577

Add missing header required by previous change

* include/tr1/hashtable.h: Add header for __gnu_cxx::__alloc_traits.

From-SVN: r276576

Adjust tr1::_Hashtable to work with std::allocator in C++20

In C++20 std::allocator will no longer define construct and destroy
member functions, so using them needs to go via allocator_traits.

* include/tr1/hashtable.h (tr1::_Hashtable::_M_allocate_node): Use
__gnu_cxx::__alloc_traits for allocator construct function.
(tr1::_Hashtable::_M_deallocate_node): Likewise for destroy function.

From-SVN: r276575

Add <span> to <bits/stdc++.h> precompiled header

* include/precompiled/stdc++.h: Include <span> for C++20.
* testsuite/17_intro/names.cc: Do not define 'e' for C++20.

From-SVN: r276574

loop-3.c: Fix undefined behavior.

2019-10-04  Richard Biener  <rguenther@suse.de>

* gcc.c-torture/execute/loop-3.c: Fix undefined behavior.

From-SVN: r276572

re PR debug/91968 (DW_AT_low_pc missing for DW_TAG_label with LTO)

2019-10-04  Richard Biener  <rguenther@suse.de>

PR lto/91968
* tree.c (find_decls_types_r): Do not remove LABEL_DECLs from
BLOCK_VARS.

From-SVN: r276571

Fix gcc.target/aarch64/sve2/shracc_1.c for ILP32

2019-10-04  Yuliang Wang  <yuliang.wang@arm.com>

gcc/testsuite/
* gcc.target/aarch64/sve2/shracc_1.c: Tighten scan-assembler-nots
to avoid matching scalar code.

From-SVN: r276568

[Fortran] Fix column of %C diagnostic location

        gcc/fortran/
        * error (error_print, gfc_format_decoder): Fix off-by one issue with %C.

        gcc/testsuite/
        * gfortran.dg/use_without_only_1.f90: Update column num in dg-warning.

From-SVN: r276567

re PR target/91982 (gcc.target/aarch64/sve/clastb_*.c tests failing with segfault)

2019-10-04  Richard Biener  <rguenther@suse.de>

PR tree-optimization/91982
* tree-vect-loop.c (vectorizable_live_operation): Also guard
against EXTRACT_LAST_REDUCTION.
* tree-vect-stmts.c (vect_transform_stmt): Likewise.

From-SVN: r276566

Adjust various comments and rename some functions in range-op.cc to
improve readability.

From-SVN: r276564

re PR c++/71504 ([C++11] constexpr fails with multidimensional arrays)

PR c++/71504
* constexpr.c (cxx_fold_indirect_ref_1): New function.
(cxx_fold_indirect_ref): Use it.

* g++.dg/cpp0x/constexpr-array21.C: New test.
* g++.dg/cpp1y/constexpr-array7.C: New test.
* g++.dg/cpp1z/constexpr-array1.C: New test.

2019-10-04  Jason Merrill  <jason@redhat.com>

PR c++/71504
* g++.dg/cpp0x/constexpr-array20.C: New test.

From-SVN: r276563

re PR c++/91974 (function not sequenced before function argument)

PR c++/91974
* cp-gimplify.c (cp_gimplify_expr) <case CALL_EXPR>: For
-fstrong-eval-order ensure CALL_EXPR_FN side-effects are evaluated
before any arguments.  Additionally, ensure CALL_EXPR_FN that isn't
invariant nor OBJ_TYPE_REF nor SSA_NAME is forced into a temporary.

* g++.dg/cpp1z/eval-order5.C: New test.

From-SVN: r276562

invoke.texi (-Wshadow=global, [...]): Fix description.

2019-10-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * doc/invoke.texi (-Wshadow=global, -Wshadow=local,
        -Wshadow=compatible-local): Fix description.
        Add an example where -Wshadow=compatible-local does not
        warn.

From-SVN: r276561

Daily bump.

From-SVN: r276560

fptr.c: Disable -Warray-bounds warning.

* config/pa/fptr.c: Disable -Warray-bounds warning.

From-SVN: r276556

pa.h (MAX_PCREL17F_OFFSET): Adjust.

* config/pa/pa.h (MAX_PCREL17F_OFFSET): Adjust.

From-SVN: r276555

pa.c (pa_output_call): Remove 64-bit sibcall sequence.

* config/pa/pa.c (pa_output_call): Remove 64-bit sibcall sequence.
(pa_attr_length_call): Adjust length for 64-bit plabel sequence.

From-SVN: r276543

expr.c (emit_block_move_hints): Slightly cleaner fix to can_move_by_pieces issue.

2019-10-03  Aaron Sawdey <acsawdey@linux.ibm.com>

* expr.c (emit_block_move_hints): Slightly cleaner fix to
can_move_by_pieces issue.

From-SVN: r276542

rust-demangle.c (looks_like_rust): Remove.

* rust-demangle.c (looks_like_rust): Remove.
(rust_is_mangled): Don't check escapes.
(is_prefixed_hash): Allow 0-9a-f permutations.
(rust_demangle_sym): Don't bail on unknown escapes.
* testsuite/rust-demangle-expected: Update 'main::$99$' test.

From-SVN: r276539

re PR fortran/91497 (-Wconversion warns when doing explicit type conversion)

2019-10-03  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/91497
* simplify.c (gfc_simplify_dble, simplify_intconv, gfc_simplify_real,
gfc_simplify_sngl): Disable -Wconversion and -Wconversion-extra
warnings for explicit conversion of literal constants.

2019-10-03  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/91497
* gfortran.dg/pr91497.f90: New test.

From-SVN: r276532

[Darwin] Pick up SDKROOT as the sysroot fallback.

For compatibility with xcrun and the behaviour of the clang driver, make use
of the setting of the SDKROOT environment variable when it is available.
This applies to both finding headers and libraries (i.e. it is also passed to
ld64).

Priority:
 1. User's command-line specified --sysroot= or -isysroot.
 2. The SDKROOT variable when set, and validated.
 3. Any sysroot provided by --with-sysroot= configuration parameter.

SDKROOT is checked thus:
  1. Presence.
  2. That it starts with "/" (i.e. 'absolute').
  3. That it is not "/" only (since that's the default).
  4. That it is readable by the process executing the driver.

This is pretty much the same rule set as used by the clang driver.

NOTE: (3) might turn out to be overly restrictive in the case that we
have configured with --with-sysroot= and then we want to run on a system
with an installation of the headers/libraries in /.  We can revisit this
if that turns out to be an important use-case.

So one can do:

xcrun --sdk macosx /path/to/gcc ....

and that provides the SDK path as the sysroot to GCC as expected.

CAVEAT: An unfortunate effect of the fact that "gcc" (and "g++") are
executables in the Xcode installation, which are found ahead of any such
named in the $PATH:

PATH=/path/to/gcc/install:$PATH
xcrun --sdk macosx gcc ....

does *not* work, instead that executes the clang from the xcode/commmand
line tools installation.

PATH=/path/to/gcc/install:$PATH
xcrun --sdk macosx x64_64-apple-darwinXX-gcc ...

does work as expected, however.

gcc/ChangeLog:

2019-10-03  Iain Sandoe  <iain@sandoe.co.uk>

PR target/87243
* config/darwin-driver.c (maybe_get_sysroot_from_sdkroot): New.
(darwin_driver_init): Use the sysroot provided by SDKROOT when that
is available and the user has not set one on the command line.

From-SVN: r276530

* g++.dg/tree-ssa/pr61034.C: Add --param max-inline-insns-single-O2=200.

From-SVN: r276527

re PR target/91769 (wrong code with -O2 on MIPS)

Fix PR target/91769

This fixes the issue by checking that addr's base reg is not part of dest
multiword reg instead just checking the first reg of dest.

gcc/ChangeLog:

2019-10-03  Dragan Mladjenovic  <dmladjenovic@wavecomp.com>

PR target/91769
* config/mips/mips.c (mips_split_move): Use reg_overlap_mentioned_p
instead of REGNO equality check on addr.reg.

gcc/testsuite/ChangeLog:

2019-10-03  Dragan Mladjenovic  <dmladjenovic@wavecomp.com>

PR target/91769
* gcc.target/mips/pr91769.c: New test.

From-SVN: r276525

Libgomp magic offset value self-documentation

2019-10-02  Julian Brown  <julian@codesourcery.com>
    Cesar Philippidis  <cesar@codesourcery.com>

libgomp/
* libgomp.h (OFFSET_INLINED, OFFSET_POINTER, OFFSET_STRUCT): Define.
* target.c (FIELD_TGT_EMPTY): Define.
(gomp_map_val): Use OFFSET_* macros instead of magic constants.  Write
as switch instead of list of ifs.
(gomp_map_vars_internal): Use OFFSET_* and FIELD_TGT_EMPTY macros.

Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>
From-SVN: r276519

primary.c (match_real_constant): Remove shadowing local vars.

2019-10-03  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * primary.c (match_real_constant): Remove shadowing local vars.
        Rename local vars.  Fix undefined behavior in loop termination.
        (gfc_convert_to_structure_constructor): Rename local var.

From-SVN: r276518

params.def (PARAM_INLINE_HEURISTICS_HINT_PERCENT, [...]): New.

* params.def (PARAM_INLINE_HEURISTICS_HINT_PERCENT,
PARAM_INLINE_HEURISTICS_HINT_PERCENT_O2): New.
* doc/invoke.texi (inline-heuristics-hint-percent,
inline-heuristics-hint-percent-O2): Document.
* tree-inline.c (inline_insns_single, inline_insns_auto): Add new
hint attribute.
(can_inline_edge_by_limits_p): Use it.

From-SVN: r276516

Avoid reserved identifier in include/parallel/multiway_merge.h

* include/parallel/multiway_merge.h (_RAIter3): Replace _C by _Cp.

From-SVN: r276515

Check init_priority in g++.dg/cpp0x/gen-attrs-67.C

gcc/testsuite:
* g++.dg/cpp0x/gen-attrs-67.C: Expect constructor priorities error
on any !init_priority target.

From-SVN: r276510

[arm] Fix rtl-checking failure in arm_print_value

Noticed while debugging the arm bootstrap failure.

2019-10-03  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
* config/arm/arm.c (arm_print_value): Use real_to_decimal
to print CONST_DOUBLEs.

From-SVN: r276508

re PR jit/91928 (libgccjit fails on subsequent compilations in ipa-cp)

PR jit/91928

* ipa-cp.c (ipa_cp_c_finalize): Release ipcp_transformation_sum.
* ipa-prop.c (ipcp_free_transformation_sum): New function.
* ipa-prop.h (ipcp_free_transformation_sum): Add declaration.

From-SVN: r276507

re PR fortran/84487 (Large rodate section increase in 465.tonto with r254427)

2019-10-03  Thomas Koenig <tkoenig@gcc.gnu.org>

PR fortran/84487
* trans-decl.c (gfc_get_symbol_decl): For __def_init, set
DECL_ARTIFICAL and do not set TREE_READONLY.

2019-10-03  Thomas Koenig <tkoenig@gcc.gnu.org>

PR fortran/84487
* gfortran.dg/typebound_call_22.f03: xfail.

From-SVN: r276506

Character typenames in errors and warnings

Character type names now incorporate length, kind is only shown if
the default character is not being used.

Examples:

  character(7) is reported as CHARACTER(7)
  character(len=20,kind=4) is reported as CHARACTER(20,4)

dummy character variables with assumed length:

  character(*) is reported as CHARACTER(*)
  character(*,kind=4) is reported as CHARACTER(*,4)

From-SVN: r276505

Makefile.in (OBJS): Add range.o and range-op.o.

* Makefile.in (OBJS): Add range.o and range-op.o.
Remove wide-int-range.o.
* function-tests.c (test_ranges): New.
(function_tests_c_tests): Call test_ranges.
* ipa-cp.c (ipa_vr_operation_and_type_effects): Call
range_fold_unary_expr instead of extract_range_from_unary_expr.
* ipa-prop.c (ipa_compute_jump_functions_for_edge): Same.
* range-op.cc: New file.
* range-op.h: New file.
* range.cc: New file.
* range.h: New file.
* selftest.h (range_tests): New prototype.
* ssa.h: Include range.h.
* tree-vrp.c (value_range_base::value_range_base): New
constructors.
(value_range_base::singleton_p): Do not call
ranges_from_anti_range until sure we will need to.
(value_range_base::type): Rename gcc_assert to
gcc_checking_assert.
(vrp_val_is_max): New argument.
(vrp_val_is_min): Same.
(wide_int_range_set_zero_nonzero_bits): Move from
wide-int-range.cc.
(extract_range_into_wide_ints): Remove.
(extract_range_from_multiplicative_op): Remove.
(extract_range_from_pointer_plus_expr): Abstract POINTER_PLUS code
from extract_range_from_binary_expr.
(extract_range_from_plus_minus_expr): Abstract PLUS/MINUS code
from extract_range_from_binary_expr.
(extract_range_from_binary_expr): Remove.
(normalize_for_range_ops): New.
(range_fold_binary_expr): New.
(range_fold_unary_expr): New.
(value_range_base::num_pairs): New.
(value_range_base::lower_bound): New.
(value_range_base::upper_bound): New.
(value_range_base::upper_bound): New.
(value_range_base::contains_p): New.
(value_range_base::invert): New.
(value_range_base::union_): New.
(value_range_base::intersect): New.
(range_compatible_p): New.
(value_range_base::operator==): New.
(determine_value_range_1): Call range_fold_*expr instead of
extract_range_from_*expr.
* tree-vrp.h (class value_range_base): Add new constructors.
Add methods for union_, intersect, operator==, contains_p,
num_pairs, lower_bound, upper_bound, invert.
(vrp_val_is_min): Add handle_pointers argument.
(vrp_val_is_max): Same.
(extract_range_from_unary_expr): Remove.
(extract_range_from_binary_expr): Remove.
(range_fold_unary_expr): New.
(range_fold_binary_expr): New.
* vr-values.c (vr_values::extract_range_from_binary_expr): Call
range_fold_binary_expr instead of extract_range_from_binary_expr.
(vr_values::extract_range_basic): Same.
(vr_values::extract_range_from_unary_expr): Call
range_fold_unary_expr instead of extract_range_from_unary_expr.
* wide-int-range.cc: Remove.
* wide-int-range.h: Remove.

From-SVN: r276504

Undo unintended change to predicates.md in subversion id 276498

From-SVN: r276503

Daily bump.

From-SVN: r276502

Use the SIGNED_16BIT_OFFSET_EXTRA_P macro for 16-bit signed tests.

2019-10-02   Michael Meissner  <meissner@linux.ibm.com>

* config/rs6000/rs6000.c (mem_operand_gpr): Use
SIGNED_16BIT_OFFSET_EXTRA_P.
(mem_operand_ds_form): Use SIGNED_16BIT_OFFSET_EXTRA_P.
(rs6000_mode_dependent_address): Use SIGNED_16BIT_OFFSET_EXTRA_P.

From-SVN: r276498

Define WIDTH macros for C2x.

As part of the integration of TS 18661-1 into C2x, many features
became unconditional features not depending on any feature test macro
being defined.  This patch updates the conditionals on the *_WIDTH
macros in limits.h and stdint.h accordingly so that they are defined
for C2x.  The macro CR_DECIMAL_DIG in float.h does still require
__STDC_WANT_IEC_60559_BFP_EXT__ to be defined, and a test for this is
added.

Bootstrapped with no regressions on x86_64-pc-linux-gnu.

gcc:
* ginclude/stdint-gcc.h [__STDC_WANT_IEC_60559_BFP_EXT__]: Change
condition on WIDTH macros to [__STDC_WANT_IEC_60559_BFP_EXT__ ||
(__STDC_VERSION__ && __STDC_VERSION__ > 201710L)].
* glimits.h: Likewise.

gcc/testsuite:
* gcc.dg/cr-decimal-dig-2.c: New test.
* gcc.dg/limits-width-2.c: New test.  Based on limits-width-1.c.
* gcc.dg/stdint-width-2.c: New test.  Based on stdint-width-1.c.

From-SVN: r276497

init.c (build_new): Use cp_expr_loc_or_input_loc in two places.

/cp
2019-10-03  Paolo Carlini  <paolo.carlini@oracle.com>

* init.c (build_new): Use cp_expr_loc_or_input_loc in two places.
* name-lookup.c (do_pushdecl): Use DECL_SOURCE_LOCATION.
(push_class_level_binding_1): Likewise.
(set_decl_namespace): Likewise.

/testsuite
2019-10-03  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.dg/diagnostic/integral-array-size-1.C: New.
* g++.dg/cpp0x/alias-decl-1.C: Test location(s) too.
* g++.dg/init/new43.C: Likewise.
* g++.dg/lookup/friend12.C: Likewise.
* g++.dg/lookup/pr79766.C: Likewise.
* g++.dg/lookup/pr84375.C: Likewise.
* g++.dg/other/new-size-type.C: Likewise.

From-SVN: r276496

re PR rtl-optimization/91976 (RTL check: expected code 'const_int', have 'reg' in emit_block_move_hints, at expr.c:1627)

PR rtl-optimization/91976
* expr.c (emit_block_move_hints): Don't call can_move_by_pieces if
size is not CONST_INT_P, set pieces_ok to false in that case.  Simplify
CONST_INT_P (size) && pieces_ok to pieces_ok.  Formatting fix.

From-SVN: r276495

constexpr.c (cxx_eval_constant_expression): If not skipping upon entry to body...

* constexpr.c (cxx_eval_constant_expression) <case CLEANUP_STMT>: If
not skipping upon entry to body, run cleanup with the same *jump_target
as it started to run the cleanup even if the body returns, breaks or
continues.
(potential_constant_expression_1): Allow CLEANUP_STMT.

* g++.dg/ext/constexpr-attr-cleanup1.C: New test.

From-SVN: r276494

constexpr.c (cxx_eval_store_expression): Formatting fix.

* constexpr.c (cxx_eval_store_expression): Formatting fix.  Handle
const_object_being_modified with array type.

From-SVN: r276493

Add changelog entries for r276491.

From-SVN: r276492

PR tree-optimization/80936 - bcmp, bcopy, and bzero not declared nonnull

gcc/testsuite/ChangeLog:

PR tree-optimization/80936
* gcc.dg/Wnonnull-2.c: New test.
* gcc.dg/Wnonnull-3.c: New test.
* gcc.dg/nonnull-3.c: Expect more warnings.

gcc/ChangeLog:

PR tree-optimization/80936
* builtins.def (bcmp, bcopy, bzero): Declare nonnull.

From-SVN: r276491

Fix ALL_REGS thinko in initialisation of function_used_regs

My change to the -fipa-ra bookkeeping used ALL_REGS as the supposedly
safe default assumption, but ALL_REGS isn't literally all registers,
just a close approximation.

This caused a bootstrap failure on arm-linux-gnu, where the condition
code register isn't in ALL_REGS and so was being masked out of some
call-clobbered sets.

2019-10-02  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
* cgraph.c (cgraph_node::rtl_info): Use SET_HARD_REG_SET
instead of reg_class_contents[ALL_REGS].

From-SVN: r276489

runtime: mark go-context.S as no-executable-stack and split-stack supported

    The .note.GNU-stack section tells the linker that this object does not
    require an executable stack.

    The .note.GNU-split-stack section tells the linker that functions in
    this object can be called directly by split-stack functions, without
    require a large stack.

    The .note.GNU-no-split-stack section tells the linker that functions
    in this object do not have a split-stack prologue.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/198440

From-SVN: r276488

Improve C++ fold caching efficiency.

While looking at concepts caching I noticed that we were clearing the caches
unnecessarily for non-constant initialization, which shouldn't affect
folding.

* typeck2.c (store_init_value): Only clear_cv_and_fold_caches if the
value is constant.

From-SVN: r276487

Add some hash_map_safe_* functions like vec_safe_*.

gcc/
* hash-map.h (default_hash_map_size): New variable.
(create_ggc): Use it as default argument.
(hash_map_maybe_create, hash_map_safe_get)
(hash_map_safe_get_or_insert, hash_map_safe_put): New fns.
gcc/cp/
* constexpr.c (maybe_initialize_fundef_copies_table): Remove.
(get_fundef_copy): Use hash_map_safe_get_or_insert.
* cp-objcp-common.c (cp_get_debug_type): Use hash_map_safe_*.
* decl.c (store_decomp_type): Remove.
(cp_finish_decomp): Use hash_map_safe_put.
* init.c (get_nsdmi): Use hash_map_safe_*.
* pt.c (store_defaulted_ttp, lookup_defaulted_ttp): Remove.
(add_defaults_to_ttp): Use hash_map_safe_*.

From-SVN: r276484

Testsuite, remove alloca header

2019-10-02  Andreas Tobler  <andreast@gcc.gnu.org>

* testsuite/libgomp.oacc-c-c++-common/loop-default.h: Remove alloca.h
include. Replace alloca () with __builtin_alloca ().
* testsuite/libgomp.oacc-c-c++-common/loop-dim-default.c: Likewise.

Reviewed-by: Thomas Schwinge <thomas@codesourcery.com>
From-SVN: r276479

re PR fortran/91784 (ICE in gfc_real2complex, at fortran/arith.c:2208)

2019-10-02  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/91784
* simplify.c (gfc_convert_constant): Simplify expression if the
expres ion type is EXPR_OP.

2019-10-02  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/91784
* gfortran.dg/pr91784.f90: New test.

From-SVN: r276474

re PR fortran/91785 (ICE in check_assumed_size_reference, at fortran/resolve.c:1601)

2019-10-02  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/91785
* primary.c (gfc_match_varspec): Ensure an inquiry parameter has
it locus set.

2019-10-02  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/91785
* gfortran.dg/pr91785.f90: New test.

From-SVN: r276473

re PR fortran/91942 (ICE in match_vtag, at fortran/io.c:1485)

2019-10-02  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/91942
* io.c (match_vtag): Check for non-NULL result->symtree.
(match_out_tag): Check for invalid constant due to inquiry parameter.
(match_filepos): Instead of a syntax error, go to cleanup to get better
error messages.

2019-10-02  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/91942
* gfortran.dg/pr91587.f90: Update dg-error regex.
* gfortran.dg/pr91942.f90: New test.

From-SVN: r276472

re PR fortran/91943 (ICE in gfc_conv_constant_to_tree, at fortran/trans-const.c:370)

2019-10-02  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/91943
* match.c (gfc_match_call): BOZ cannot be an actual argument in
a subroutine reference.
* resolve.c (resolve_function): BOZ cannot be an actual argument in
a function reference.

2019-10-02  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/91943
gfortran.dg/pr91943.f90

From-SVN: r276471

cif-code.def (MAX_INLINE_INSNS_SINGLE_O2_LIMIT, [...]): New.

* cif-code.def (MAX_INLINE_INSNS_SINGLE_O2_LIMIT,
MAX_INLINE_INSNS_AUTO_O2_LIMIT): New.
* ipa-inline.c (inline_insns_single, inline_insns_auto): New functions.
(can_inline_edge_by_limits_p): Use it.
(big_speedup_p): Use PARAM_INLINE_MIN_SPEEDUP_O2.
(want_inline_small_function_p): Use O2 bounds.
(edge_badness): LIkewise.
* opts.c (default_options): Add OPT_finline_functions.
* params.def (PARAM_INLINE_MIN_SPEEDUP_O2,
PARAM_MAX_INLINE_INSNS_SINGLE_O2, PARAM_MAX_INLINE_INSNS_AUTO_O2):
New parameters.

* g++.dg/tree-ssa/pr53844.C: Add -fno-inline-functions --param
max-inline-insns-single-O2=200.
* gcc.c-torture/execute/builtins/builtins.exp: Add
-fno-inline-functions to additional_flags.
* gcc.dg/ipa/inline-7.c: Add -fno-inline-functions.
* gcc.dg/optimize-bswapsi-5.c: Add -fno-inline-functions.
* gcc.dg/tree-ssa/ssa-thread-12.c: Add --param
early-inlining-insns-O2=14 -fno-inline-functions; revert previous
change.
* gcc.dg/winline-3.c: Use --param max-inline-insns-single-O2=1
--param inline-min-speedup-O2=100
instead of --param max-inline-insns-single=1 --param
inline-min-speedup=100

* invoke.texi (-finline-functions): Update documentation.
(max-inline-insns-single-O2, max-inline-insns-auto-O2,
inline-min-speedup-O2): Document.
(early-inlining-insns-O2): Simplify docs.

From-SVN: r276470

cif-code.def (MAX_INLINE_INSNS_SINGLE_O2_LIMIT, [...]): New.

* cif-code.def (MAX_INLINE_INSNS_SINGLE_O2_LIMIT,
MAX_INLINE_INSNS_AUTO_O2_LIMIT): New.
* ipa-inline.c (inline_insns_single, inline_insns_auto): New functions.
(can_inline_edge_by_limits_p): Use it.
(big_speedup_p): Use PARAM_INLINE_MIN_SPEEDUP_O2.
(want_inline_small_function_p): Use O2 bounds.
(edge_badness): LIkewise.
* opts.c (default_options): Add OPT_finline_functions.
* params.def (PARAM_INLINE_MIN_SPEEDUP_O2,
PARAM_MAX_INLINE_INSNS_SINGLE_O2, PARAM_MAX_INLINE_INSNS_AUTO_O2):
New parameters.

* g++.dg/tree-ssa/pr53844.C: Add -fno-inline-functions --param
max-inline-insns-single-O2=200.
* gcc.c-torture/execute/builtins/builtins.exp: Add
-fno-inline-functions to additional_flags.
* gcc.dg/ipa/inline-7.c: Add -fno-inline-functions.
* gcc.dg/optimize-bswapsi-5.c: Add -fno-inline-functions.
* gcc.dg/tree-ssa/ssa-thread-12.c: Add --param
early-inlining-insns-O2=14 -fno-inline-functions; revert previous
change.
* gcc.dg/winline-3.c: Use --param max-inline-insns-single-O2=1
--param inline-min-speedup-O2=100
instead of --param max-inline-insns-single=1 --param
inline-min-speedup=100

* invoke.texi (-finline-functions): Update documentation.
(max-inline-insns-single-O2, max-inline-insns-auto-O2,
inline-min-speedup-O2): Document.
(early-inlining-insns-O2): Simplify docs.

From-SVN: r276469

Remove greedy wildcards from libstdc++ linker script

The only symbols matched by std::e[a-q]* and std::e[s-z]* that are
supposed to be in the GLIBCXX_3.4 version are std::exception::* and
std::endl and std::ends. The latter two already have explicit patterns
matching them, so we just need to match std::exception::*.

This change ensures that any new symbols with a return type of
std::enable_if<...> are not added to the GLIBCXX_3.4 version.

* config/abi/pre/gnu.ver: Tighten up greedy wildcards.

From-SVN: r276468

ifcvt: improve cost estimation (PR 87047)

PR rtl-optimization/87047
* ifcvt.c (average_cost): New static function.  Use it...
(noce_process_if_block): ... here.

testsuite/
* gcc.dg/pr87047.c: New test.

From-SVN: r276466

[PR testsuite/91842] Skip gcc.dg/ipa/ipa-sra-19.c on power

2019-10-02  Martin Jambor  <mjambor@suse.cz>

PR testsuite/91842
* gcc.dg/ipa/ipa-sra-19.c: Skip on powerpc.

From-SVN: r276465

module.c (load_commons): Initialize flags to 0 to silecne -Wmaybe-uninitialized warning.

* module.c (load_commons): Initialize flags to 0 to silecne
-Wmaybe-uninitialized warning.
(read_module): Likewise for n and comp_name.

From-SVN: r276464

Document non-conformance of parallel mode to recent C++ standards

* doc/xml/manual/parallel_mode.xml: Add caveat about support for
recent standards.
* doc/html/*: Regenerate.

From-SVN: r276463

rs6000-protos.h (expand_block_move): Change prototype.

2019-10-02  Aaron Sawdey <acsawdey@linux.ibm.com>

* config/rs6000/rs6000-protos.h (expand_block_move): Change prototype.
* config/rs6000/rs6000-string.c (expand_block_move): Add
might_overlap parm.
* config/rs6000/rs6000.md (movmemsi): Add new pattern.
(cpymemsi): Add might_overlap parm to expand_block_move() call.

From-SVN: r276462

builtins.c (expand_builtin_memory_copy_args): Add might_overlap parm.

2019-10-02  Aaron Sawdey <acsawdey@linux.ibm.com>

* builtins.c (expand_builtin_memory_copy_args): Add might_overlap parm.
(expand_builtin_memcpy): Use might_overlap parm.
(expand_builtin_mempcpy_args): Use might_overlap parm.
(expand_builtin_memmove): Call expand_builtin_memory_copy_args.
(expand_builtin_memory_copy_args): Add might_overlap parm.
* expr.c (emit_block_move_via_cpymem): Rename to
emit_block_move_via_pattern, add might_overlap parm, use cpymem
or movmem optab as appropriate.
(emit_block_move_hints): Add might_overlap parm, do the right
thing for might_overlap==true.
* expr.h (emit_block_move_hints): Update prototype.

From-SVN: r276461

tree-eh.h (unsplit_eh_edges): Declare.

* tree-eh.h (unsplit_eh_edges): Declare.
* tree-eh.c (maybe_remove_unreachable_handlers): Detect more cases.
(unsplit_eh_edges): New function wrapping unsplit_all_eh.
* gimple-ssa-store-merging.c: Include cfganal.h cfgcleanup.h except.h.
(struct store_immediate_info): Add lp_nr field.
(store_immediate_info::store_immediate_info): Add NR2 parameter and
initialize lp_nr with it.
(struct merged_store_group): Add lp_nr and only_constants fields.
(merged_store_group::merged_store_group): Initialize them.
(merged_store_group::can_be_merged_into): Deal with them.
(pass_store_merging): Rename terminate_and_release_chain into
terminate_and_process_chain.
(pass_store_merging::terminate_and_process_all_chains): Adjust to above
renaming and remove useless assertions.
(pass_store_merging::terminate_all_aliasing_chains): Small tweak.
(stmts_may_clobber_ref_p): Be prepared for different basic blocks.
(imm_store_chain_info::coalesce_immediate_stores): Use only_constants
instead of always recomputing it and compare lp_nr.
(imm_store_chain_info::output_merged_store): If the group is in an
active EH region, register new stores if they can throw.  Moreover,
if the insertion has created new basic blocks, adjust the PHI nodes
of the post landing pad.
(imm_store_chain_info::output_merged_stores): If the original stores
are in an active EH region, deregister them.
(lhs_valid_for_store_merging_p): Prettify.
(adjust_bit_pos): New function extracted from...
(mem_valid_for_store_merging): ...here.  Use it for the base address
and also for the offset if it is the addition of a constant.
(lp_nr_for_store): New function.
(pass_store_merging::process_store): Change return type to bool.
Call lp_nr_for_store to initialize the store info.  Propagate the
return status of various called functions to the return value.
(store_valid_for_store_merging_p): New predicate.
(enum basic_block_status): New enumeration.
(get_status_for_store_merging): New function.
(pass_store_merging::execute): If the function can throw and catch
non-call exceptions, unsplit the EH edges on entry and clean up the
CFG on exit if something changed.  Call get_status_for_store_merging
for every basic block and keep the chains open across basic blocks
when possible.  Terminate and process open chains at the end, if any.

From-SVN: r276459

Fix shadowing in globalize_reg

2019-10-02  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
* reginfo.c (globalize_reg): Fix shadowed variable in
function_abis walk.

From-SVN: r276457

Fix MIPS call-clobbered-*.c tests

Jeff pointed out that gcc.target/mips/call-clobbered-4.c started
failing after the function-abi series.  This is because IRA used
to treat partly call-clobbered registers as hard conflicts and
so wouldn't consider them for -fcaller-saves.  Now that we treat
call clobbers the same way regardless of where they come from,
we can use $f21 as a caller-save register.  This in turn means
that -Os is no longer a special case in call-clobbered-3.c.

(The new code is the same size as the old code.)

2019-10-02  Richard Sandiford  <richard.sandiford@arm.com>

gcc/testsuite/
* gcc.target/mips/call-clobbered-3.c: Remove skip for -Os.
* gcc.target/mips/call-clobbered-4.c: Delete.

From-SVN: r276456