2020-02-19 Tobias Burnus <tobias@codesourcery.com>
* .gitattributes: New; whitespace handling for Fortran's openacc_lib.h.
* config/accel/openacc.f90 (openacc_kinds): Add acc_device_current.
(openacc_internal, acc_on_device_h): Fix argument name; minor cleanup.
* libgomp.texi (Enabling OpenACC): No longer mark as experimental.
(acc_set_device_num): Fix Fortran argument name, use same name for C.
(acc_get_property): Update Fortran interface to post-OpenACC 3.0
corrections; add note about the previous interface and named constant.
(OpenACC library and environment variables): Fix two typos.
* openacc.f90: Use for all procedures the argument names from the spec
as for …_h they are user visible.
(openacc_kinds): Rename acc_device_property to
acc_device_property_kinds and change value to int32 ; and update users.
Re-add acc_device_property for for backward compatibility.
(acc_get_property_string_h): Clean up as acc_device_property_kind
changed.
(acc_get_property_h): Likewise and return c_size_t instead of
acc_device_property.
(openacc): Also export acc_device_property_kinds.
(acc_async_test_h, acc_async_test_all_h, acc_on_device_h,
acc_is_present_32_h, acc_is_present_64_h): Simplify logical-return-value
handling; check against /= 0 instead of == 1 to match C.
* openacc_lib.h: Use for all procedures the argument names from the spec
as for …_h they are user visible. Place !GCC$ into the first column to
be active also for fixed-form souce form.
(acc_device_current, acc_device_property_kind, acc_device_property,
acc_property_memory, acc_property_free_memory, acc_property_name,
acc_property_vendor, acc_property_driver): New named constants.
(acc_get_property, acc_get_property_string): New generic interface.
- fmv.x.s/fmv.s.x renamed to fmv.x.w/fmv.w.x in the latest RISC-V ISA
manual.
- Tested rv32gc/rv64gc on bare-metal with qemu.
ChangeLog
gcc/
Kito Cheng <kito.cheng@sifive.com>
* config/riscv/riscv.c (riscv_output_move) Using fmv.x.w/fmv.w.x
rather than fmv.x.s/fmv.s.x.
Among other changes, P1983R0 resolves LWG 3278 in a different way, so this patch
also reverts the already-applied wording of LWG 3278.
The wording for US291 (the join_view::begin hunk) also required adding the
friend _Iterator<!_Const> to join_view::_Iterator. This friend is needed so
that _Iterator's converting constructor can access the private members of an
_Iterator of the opposite constness.
The wording for US283 has already been applied it seems.
libstdc++-v3/ChangeLog:
P1983R0 Wording for GB301, US296, US292, US291, and US283
* include/std/ranges (filter_view::pred): New member function.
(join_view::_Iterator::_Iterator): Remove now-redundant comment since
P1983R0 fixes the highlighted issue in the same way.
(join_view::_Iterator<_Const>): Add friend
join_view::_Iterator<!_Const>.
(join_view::_M_inner): Remove mutable specifier, effectively reverting
the proposed wording changes of P3278.
(join_view::begin): Refine the condition for when to return a const
iterator.
(split_view::_OuterIter::_OuterIter): Adjust constraints.
* testsuite/std/ranges/adaptors/filter.cc: Test that filter_view::pred
exists and works.
PR libstdc++/93818
* include/std/ranges (_RangeAdaptor): Add deduction guide.
(filter_view::_Iterator): Add alias _Vp_iter and use in place of
iterator_t<_Vp>.
(filter_view::_Iterator::_S_iter_cat()): Add 'typename'.
(transform_view::_Iterator): Add alias _Base_iter and use in place of
iterator_t<_Base>.
(transform_view::_Iterator::_S_iter_cat()): Add 'typename'.
(join_view::_Iterator): Add _Outer_iter and _Inner_iter aliases.
(join_view::_Iterator::_S_iter_cat()): Add 'typename'.
(split_view::_InnerIter::_S_iter_cat()): Likewise.
I only tested LP64 targets and missed this maybe-long unsigned int.
Tested with
GXX_TESTSUITE_STDS=98,11,14,17,2a make check-c++ RUNTESTFLAGS='--target_board=unix\{-m32,-m64\} dg.exp=array-init1.C'
2020-02-18 Marek Polacek <polacek@redhat.com>
PR c++/93817
* g++.dg/diagnostic/array-init1.C: Fix for ILP32.
2020-02-18 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/93599
* io/async.c (destroy_adv_cond): Do not destroy lock.
(async_io): Make sure au->lock is locked for finishing of thread.
Do not lock/unlock around signalling emptysignal. Unlock au->lock
before return.
(init_adv_cond): Do not initialize lock.
(enqueue_transfer): Unlock after signal.
(enqueue_done_id): Likewise.
(enqueue_done): Likewise.
(enqueue_close): Likewise.
(enqueue_data_transfer): Likewise.
(async_wait_id): Do not lock/unlock around signalling au->work.
(async_wait): Unlock after signal.
* io/async.h (SIGNAL): Add comment about needed au->lock.
Remove locking/unlocking of advcond->lock.
(WAIT_SIGNAL_MUTEX): Add comment. Remove locking/unlocking of
advcond->lock. Unlock mutex only at the end. Loop on
__ghread_cond_wait returning zero.
(REVOKE_SIGNAL): Add comment. Remove locking/unlocking of
advcond->lock.
(struct adv_cond): Remove mutex from struct.
asdf
This includes fixes for first, last, as_bytes and as_writable_bytes
which were missing from the paper.
* include/std/span (__cpp_lib_span): Update value.
(span(It, size_type), span(It, End)): Make conditionally explicit. Add
assertion.
(span(R&&), span(const span<OType, OExtent>&)): Likewise and relax
constraints.
(span::first<Count>(), span::last<Count>()): Use explicit type in
return statement.
(as_bytes, as_writable_bytes): Likewise.
* include/std/version (__cpp_lib_span): Update value.
* testsuite/23_containers/span/1.cc: Check new value.
* testsuite/23_containers/span/2.cc: Check new value.
* testsuite/23_containers/span/explicit.cc: New test.
This makes the constraints consistent with the pre-Prague working paper.
* include/std/span (span::__is_compatible_array): Simplify alias
template by using requires-clause.
(span::__is_compatible_ref): New alias template for constraining
constructors.
(span::__is_compatible_iterator, span::__is_compatible_range): Remove.
(span(It, size_type), span(It, End)): Use __is_compatible_ref.
(span(T(&)[N], span(array<T, N>&), span(const array<T, N>&)): Remove
redundant parentheses.
(span(R&&)): Add missing constraints.
I find it easier to work with this class when the declarations match the
order in the C++2a working paper.
There's no need to use long, descriptive template parameter names like
_ContiguousIterator when the parameter is already constrained by the
std::contiguous_iterator concept. This is also consistent with the
naming conventions in the working paper.
* include/std/span (span): Reorder members and rename template
parameters to match declarations in the C++2a working paper.
Following this change it's no longer possible to use std::span with
structured bindings or with the tuple-like API. It will probably come
back for C++23 though.
P2116R0 Remove tuple-like protocol support from fixed-extent span
* include/std/span (get, tuple_size, tuple_element): Remove.
* testsuite/23_containers/span/everything.cc: Remove checks for
tuple-like API.
* testsuite/23_containers/span/get_neg.cc: Remove.
* testsuite/23_containers/span/tuple_element_dynamic_neg.cc: Remove.
* testsuite/23_containers/span/tuple_element_oob_neg.cc: Remove.
* testsuite/23_containers/span/tuple_size_neg.cc: Remove.
libstdc++-v3/ChangeLog:
P2106R0 Alternative wording for GB315 and GB316
* include/bits/ranges_algo.h (in_fun_result): New.
(for_each_result, for_each_n_result): Change into an alias of
in_fun_result.
(in_in_result): New.
(mismatch_result): Change into an alias of in_in_result.
(copy_if_result): Change into an alias of in_out_result.
(swap_ranges_result): Change into an alias of in_in_result.
(unary_transform_result): Change into an alias of in_out_result.
(in_in_out_result): New.
(binary_transform_result): Change into an alias of in_in_out_result.
(replace_copy_result, replace_copy_if_result, remove_copy_if_result,
remove_copy_result, unique_copy_result, reverse_copy_result,
rotate_copy_result, partial_sort_copy_result): Change into an alias of
in_out_result.
(in_out_out_result): New.
(partition_copy_result, merge_result): Change into an alias of
in_out_out_result.
(set_union_result, set_intersection_result): Change into an alias of
in_in_out_result.
(set_difference_result): Change into an alias of in_out_result.
(set_symmetric_difference): Change into an alias of in_in_out_result.
(min_max_result): New.
(minmax_result, minmax_element_result): Change into an alias of
min_max_result.
(in_found_result): New.
(next_permutation_result, prev_permutation_result): Change into an alias
of in_found_result.
(__next_permutation_fn::operator(), __prev_permutation_fn::operator()):
Adjust following changes to next_permutation_result and
prev_permutation_result.
* include/bits/ranges_algobase.h (in_out_result): New.
(copy_result, move_result, move_backward_result, copy_backward_result,
copy_n_result): Change into an alias of in_out_result.
* include/bits/ranges_uninitialized.h (uninitialized_copy_result,
uninitialized_copy_n_result, uninitialized_move_result,
uninitialized_move_n_result): Likewise.
* testsuite/25_algorithms/next_permutation/constrained.cc: Adjust uses of
structured bindings.
* testsuite/25_algorithms/prev_permutation/constrained.cc: Likewise.
This adds rangified overloads for for_each_n, sample and clamp as per P1243R4.
libstdc++-v3/ChangeLog:
P1243R4 Rangify new algorithms
* include/bits/ranges_algo.h (for_each_n_result, __for_each_n_fn,
for_each_n, __sample_fn, sample, __clamp_fn, clamp): New.
* testsuite/25_algorithms/clamp/constrained.cc: New test.
* testsuite/25_algorithms/for_each/constrained.cc: Augment test.
* testsuite/25_algorithms/sample/constrained.cc: New test.
An ICE occurred if an attempt was made to assign a pointer to a
character variable that has an length incorrectly specified using
a real constant and does not have the target attribute.
gcc/fortran/ChangeLog
PR fortran/93714
* expr.c (gfc_check_pointer_assign): Move check for
matching character length to after checking the lvalue
attributes for target or pointer.
gcc/testsuite/ChangeLog
PR fortran/93714
* gfortran.dg/char_pointer_assign_6.f90: Look for no target
message instead of length mismatch.
* gfortran.dg/pr93714_1.f90
* gfortran.dg/pr93714_2.f90
ICE occurs when assigning a BOZ constant to an class(*) variable
with the allocatable attribute. Use of BOZ constants outside
data statements and int/real/dble/cmplx intrinsics is not allowed.
Original patch provided by Steven G. Kargl <kargl@gcc.gnu.org>.
gcc/fortran/ChangeLog
PR fortran/93601
* match.c (gfc_match_assignment) : Reject assignment if
the lhs stype is BT_CLASS and the rhs type is BT_BOZ.
gcc/testsuite/ChangeLog
PR fortran/93601
* gfortran.dg/pr93601.f90 : New test.
PR ipa/93583
* cgraph.c (cgraph_node::verify_node): Verify MALLOC attribute
and return type of functions.
* ipa-param-manipulation.c (ipa_param_adjustments::adjust_decl):
Drop MALLOC attribute for void functions.
* ipa-pure-const.c (funct_state_summary_t::duplicate): Drop
malloc_state for a new VOID clone.
PR ipa/93583
* gcc.dg/ipa/pr93583.c: New test.
PR ipa/92924
* common.opt: Add -fprofile-reproducibility.
* doc/invoke.texi: Document it.
* value-prof.c (dump_histogram_value):
Document and support behavior for counters[0]
being a negative value.
(get_nth_most_common_value): Handle negative
counters[0] in respect to flag_profile_reproducible.
PR ipa/92924
* libgcov-merge.c (merge_topn_values_set): Record
when a TOP N counter becomes invalid. When merging
remove a smallest value if the space is needed.
PR analyzer/93777 reports ICEs in a Fortran and C++ case involving
a cast of a NULL pointer to a REFERENCE_TYPE.
In both cases the call to build_cast fails and returns a NULL type, but
region_model::maybe_cast_1 asserts that a non-NULL type was returned.
This patch fixes the ICEs by converting the assertion to a conditional.
gcc/analyzer/ChangeLog:
PR analyzer/93777
* region-model.cc (region_model::maybe_cast_1): Replace assertion
that build_cast returns non-NULL with a conditional, falling
through to the logic which returns a new unknown value of the
desired type if it fails.
gcc/testsuite/ChangeLog:
PR analyzer/93777
* g++.dg/analyzer/pr93777.C: New test.
* gfortran.dg/analyzer/pr93777.f90: New test.
PR analyzer/93778 reports an ICE with -fanalyzer on a gfortran test case
at this gimple stmt:
_gfortran_st_set_nml_var (&dt_parm.0, &ro.xi.jq, &"ro%xi%jq"[1]{lb: 1 sz: 1}, 4, 0, D.3913);
where ro.xi.jq is a COMPONENT_REF, but ro.xi is of type "struct bl[3]".
The analyzer's handling of COMPONENT_REF assumes that the type of the
1st argument is a RECORD_TYPE or UNION_TYPE, whereas in this case it's
an ARRAY_TYPE, leading to a failed as_a inside
region_model::get_field_region.
This patch fixes the ICE by generalizing the "give up on this tree code"
logic from r10-6667-gf76a88ebf089871dcce215aa0cb1956ccc060895 for
PR analyzer/93388, so that the analyzer gives up when it needs to get an
lvalue for a COMPONENT_REF on something other than a RECORD_TYPE or
UNION_TYPE.
gcc/analyzer/ChangeLog:
PR analyzer/93778
* engine.cc (impl_region_model_context::on_unknown_tree_code):
Rename to...
(impl_region_model_context::on_unexpected_tree_code): ...this and
convert first argument from path_var to tree.
(exploded_node::on_stmt): Pass ctxt to purge_for_unknown_fncall.
* exploded-graph.h (region_model_context::on_unknown_tree_code):
Rename to...
(region_model_context::on_unexpected_tree_code): ...this and
convert first argument from path_var to tree.
* program-state.cc (sm_state_map::purge_for_unknown_fncall): Add
ctxt param and pass on to calls to get_rvalue.
* program-state.h (sm_state_map::purge_for_unknown_fncall): Add
ctxt param.
* region-model.cc (region_model::handle_unrecognized_call): Pass
ctxt on to call to get_rvalue.
(region_model::get_lvalue_1): Move body of default case to
region_model::make_region_for_unexpected_tree_code and call it.
Within COMPONENT_REF case, reject attempts to handle types other
than RECORD_TYPE and UNION_TYPE.
(region_model::make_region_for_unexpected_tree_code): New
function, based on default case of region_model::get_lvalue_1.
* region-model.h
(region_model::make_region_for_unexpected_tree_code): New decl.
(region_model::on_unknown_tree_code): Rename to...
(region_model::on_unexpected_tree_code): ...this and convert first
argument from path_var to tree.
(class test_region_model_context): Update vfunc implementation for
above change.
gcc/testsuite/ChangeLog:
PR analyzer/93778
* gfortran.dg/analyzer/pr93778.f90: New test.
PR analyzer/93774 reports an ICE in gfortran with -fanalyzer within
region_model::convert_byte_offset_to_array_index on a pointer of
incomplete type ("character(kind=1)[0:][1:0] * restrict").
This patch bulletproofs the routine against incomplete types, fixing
the ICE.
gcc/analyzer/ChangeLog:
PR analyzer/93774
* region-model.cc
(region_model::convert_byte_offset_to_array_index): Use
int_size_in_bytes before calling size_in_bytes, to gracefully fail
on incomplete types.
gcc/testsuite/ChangeLog:
PR analyzer/93774
* gfortran.dg/analyzer/deferred_character_25.f90: New test,
based on gfortran.dg/deferred_character_25.f90.
PR analyzer/93779 reports an ICE in gfortran with -fanalyzer
that was fixed for GCC 10 by a workaround in
f76a88ebf089871dcce215aa0cb1956ccc060895; the tree code in
question is a FUNCTION_DECL.
Given that I want to rework the above patch at some point, it seems
prudent to add test coverage to ensure the ICE doesn't come back,
which this patch does.
gcc/testsuite/ChangeLog:
PR analyzer/93779
* gfortran.dg/analyzer/pr88304-2.f90: New test, adapted from
gfortran.fortran-torture/compile/pr88304-2.f90
Associating a symbol with a BOZ constant caused an ICE. Output
an error message as an association target cannot be a BOZ
constant.
Original patch provided by Steven G. Kargl <kargl@gcc.gnu.org>.
gcc/fortran/ChangeLog
PR fortran/93603
* match.c (gfc_match_associate) : If target expression
has the type BT_BOZ output an error and goto
assocListError.
gcc/testsuite/ChangeLog
PR fortran/93603
* gfortran.dg/pr93603.f90 : New test.
Caused by using invalid part_refs in kind specifications,
e.g. %re or %im on non-complex expressions and %len on
non character expressions.
Check whether %re, %im and %len are valid when checking
kind specification.
The original patch from Steven G. Kargl <kargl@gcc.gnu.org> only
checked for %re and %im.
gcc/fortran/ChangeLog:
PR fortran/93580
* primary.c (gfc_match_varspec): If the symbol following %
is re or im and the primary expression type is not BT_COMPLEX
issue an error. If the symbol is len and the primary
expression type is not BT_CHARACTER is an error.
gcc/testsuite/ChangeLog:
PR fortran/93580
* gfortran.dg/dg/pr93580.f90: New test.
As the patch shows, various messages didn't match the field names they are
talking about.
2020-02-18 Jakub Jelinek <jakub@redhat.com>
PR ipa/93797
* cgraph.c (verify_speculative_call): Use speculative_id instead of
speculative_uid in messages. Remove trailing whitespace from error
message. Use num_speculative_call_targets instead of
num_speculative_targets in a message.
(cgraph_node::verify_node): Use call_stmt instead of cal_stmt in
edge messages and stmt instead of cal_stmt in reference message.
The following testcase ICEs, because execute_update_addresses_taken attempts
to create a VECTOR_TYPE with non-power of 2 number of elts.
Fixed by guarding it with the corresponding predicate.
2020-02-18 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/93780
* tree-ssa.c (non_rewritable_lvalue_p): Check valid_vector_subparts_p
before calling build_vector_type.
(execute_update_addresses_taken): Likewise.
* gcc.dg/pr93780.c: New test.
The two places in diagnostics.c where URLs are printed both do
non-trivial work to generate the URL strings (including malloc/free), so
don't do this work if URL-printing is disabled.
gcc/ChangeLog:
* diagnostic.c (print_any_cwe): Don't call get_cwe_url if URLs
won't be printed.
(print_option_information): Don't call get_option_url if URLs
won't be printed.
PR analyzer/93775 reports an ICE in cgraph_node::get when -fanalyzer is
used on code that calls a function pointer that was generated via a cast
from a non-function.
This patch fixes it by bulletproofing region_model::get_fndecl_for_call
for the case where the code_region's get_tree_for_child_region returns
NULL.
gcc/analyzer/ChangeLog:
PR analyzer/93775
* region-model.cc (region_model::get_fndecl_for_call): Handle the
case where the code_region's get_tree_for_child_region returns
NULL.
gcc/testsuite/ChangeLog:
PR analyzer/93775
* gcc.dg/analyzer/20020129-1.c: New test.
Thread-local variables with DECL_COMMON trigger an internal compiler
error on targets that use emulated TLS without register_common, when
we attempt to expand a call to the NULL register_common, with
testcases as simple as gcc.dg/tls/emutls-2.c.
The documentation states that, on such targets, common variables would
fall back to explicitly initialized. This patch rearranges the code
that deals with initialization of common and non-common variables,
complementing code that is already in place to detect
register_common-less targets.
for gcc/ChangeLog
* tree-emutls.c (new_emutls_decl, emutls_common_1): Complete
handling of register_common-less targets.
for gcc/testsuite/ChangeLog
* gcc.dg/tls/emutls-3.c: New, combining emutls-2.c and
thr-init-2.c into an execution test with explicitly common
variables.
This removes the complicated std::boolean concept, as agreed in Prague.
* include/bits/ranges_algo.h (__find_fn, __find_first_of_fn)
(__adjacent_find_fn): Cast result of predicate to bool.
* include/std/concepts (__boolean): Remove.
(__detail::__boolean_testable_impl, __detail::__boolean_testable): Add
new helper concepts.
(__detail::__weakly_eq_cmp_with, totally_ordered, totally_ordered_with)
(predicate): Use __boolean_testable instead of boolean.
* libsupc++/compare (__detail::__partially_ordered, _Synth3way):
Likewise.
This defines ranges::ssize as approved in Prague. It's unclear what is
supposed to happen for types for which range_difference_t is not a valid
type. I've assumed they are not meant to be usable with ranges::ssize,
despite being usable with ranges::size.
* include/bits/range_access.h (_SSize, ssize): Define for C++20.
* testsuite/std/ranges/access/ssize.cc: New test.
Implement this change for C++20 that was just approved in Prague.
P1956R1 On the names of low-level bit manipulation functions
* include/bits/hashtable_policy.h: Update comment.
* include/std/bit (__ispow2, __ceil2, __floor2, __log2p1): Rename.
(ispow2, ceil2, floor2, log2p1): Likewise.
(__cpp_lib_int_pow2): Add feature test macro.
* include/std/charconv (__to_chars_len_2): Adjust use of __log2p1.
* include/std/memory (assume_aligned): Adjust use of ispow2.
* include/std/version (__cpp_lib_int_pow2): Add.
* libsupc++/new_opa.cc: Adjust use of __ispow2.
* src/c++17/memory_resource.cc: Likewise, and for __ceil2 and __log2p1.
* testsuite/17_intro/freestanding.cc: Adjust use of ispow2.
* testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Rename to ...
* testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: ... here.
* testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Rename to ...
* testsuite/26_numerics/bit/bit.pow.two/bit_ceil_neg.cc: ... here.
* testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Rename to ...
* testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: ... here.
* testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Rename to ...
* testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: ... here.
* testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Rename to ...
* testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc: ... here.
The code generated by this test changed shortly after
this test was committed, and we didn't get back to
updating the scan-assembler statements to match.
Until now.
[testsuite]
* gcc.target/powerpc/fold-vec-extract-longlong.p8.c: Correct
number of expected insns.
This header is intentionally valid in C++14 mode, because no conforming
C++14 program will try to include <charconv> and so it's OK to add new
(non-reserved in C++14) names to namespace std. However, other headers
must not include <charconv> transitively prior to C++17, so that we
don't add those non-reserved names without the user requesting it.
This adds a comment to the header explaining that.
* include/std/charconv: Add comment.
In C++20 <memory> depends on <bits/ranges_unitialized.h> which
depends on <bits/random.h> just for a single concept. Including
<bits/random.h> also requires including <cmath>, which is huge due to
the C++17 special functions.
This change moves the concept to the <bits/uniform_int_dist.h> internal
header that exists so that <bits/stl_algobase.h> doesn't need to include
<bits/random.h>.
PR libstdc++/92546 (partial)
* include/bits/random.h (uniform_random_bit_generator): Move definition
to <bits/uniform_int_dist.h>.
* include/bits/ranges_algo.h: Include <bits/uniform_int_dist.h> instead
of <bits/random.h>.
* include/bits/ranges_algobase.h: Do not include <cmath>.
* include/bits/uniform_int_dist.h (uniform_random_bit_generator):
Move here.
* include/std/ranges: Do not include <limits>.
* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno.
Many uses of std::numeric_limits in C++17 and C++20 features only really
need the min(), max() and digits constants for integral types. By adding
__detail::__int_limits we can avoid including the whole <limits> header.
The <limits> header isn't especially large, but avoiding it still gives
small savings in compilation time and memory usage for the compiler.
There are also C++11 features that could benefit from this change (e.g.
<bits/hashtable_policy.h> and <bits/uniform_int_dist.h>) but I won't
change those until stage 1.
The implementation of __int_limits assumes two's complement integers,
which is true for all targets supported by GCC.
PR libstdc++/92546 (partial)
* include/Makefile.am: Add new header.
* include/Makefile.in: Regenerate.
* include/bits/int_limits.h: New header.
* include/bits/parse_numbers.h (__select_int::_Select_int): Replace
numeric_limits with __detail::__int_limits.
* include/std/bit (__rotl, __rotr, __countl_zero, __countl_one)
(__countr_zero, __countr_one, __popcount, __ceil2, __floor2, __log2p1):
Likewise.
* include/std/charconv (__to_chars_8, __from_chars_binary)
(__from_chars_alpha_to_num, from_chars): Likewise.
* include/std/memory_resource (polymorphic_allocator::allocate)
(polymorphic_allocator::allocate_object): Likewise.
* include/std/string_view (basic_string_view::_S_compare): Likewise.
* include/std/utility (in_range): Likewise.
* testsuite/20_util/integer_comparisons/in_range_neg.cc: Adjust for
extra error about incomplete type __int_limits<bool>.
* testsuite/26_numerics/bit/bit.count/countl_one.cc: Include <limits>.
* testsuite/26_numerics/bit/bit.count/countl_zero.cc: Likewise.
* testsuite/26_numerics/bit/bit.count/countr_one.cc: Likewise.
* testsuite/26_numerics/bit/bit.count/countr_zero.cc: Likewise.
* testsuite/26_numerics/bit/bit.count/popcount.cc: Likewise.
* testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Likewise.
* testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Likewise.
* testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
* testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
* testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
* testsuite/26_numerics/bit/bit.rotate/rotl.cc: Likewise.
* testsuite/26_numerics/bit/bit.rotate/rotr.cc: Likewise.
* include/std/type_traits (__is_standard_integer): New helper trait.
* include/std/utility (cmp_equal, cmp_not_equal, cmp_less, cmp_greater)
(cmp_less_equal, cmp_greater_equal, in_range): Define for C++20.
* include/std/version (__cpp_lib_integer_comparison_functions): Define.
* testsuite/20_util/integer_comparisons/1.cc: New test.
* testsuite/20_util/integer_comparisons/2.cc: New test.
* testsuite/20_util/integer_comparisons/equal.cc: New test.
* testsuite/20_util/integer_comparisons/equal_neg.cc: New test.
* testsuite/20_util/integer_comparisons/greater_equal.cc: New test.
* testsuite/20_util/integer_comparisons/greater_equal_neg.cc: New test.
* testsuite/20_util/integer_comparisons/greater_neg.cc: New test.
* testsuite/20_util/integer_comparisons/in_range.cc: New test.
* testsuite/20_util/integer_comparisons/in_range_neg.cc: New test.
* testsuite/20_util/integer_comparisons/less.cc: New test.
* testsuite/20_util/integer_comparisons/less_equal.cc: New test.
* testsuite/20_util/integer_comparisons/less_equal_neg.cc: New test.
* testsuite/20_util/integer_comparisons/less_neg.cc: New test.
* testsuite/20_util/integer_comparisons/not_equal.cc: New test.
* testsuite/20_util/integer_comparisons/not_equal_neg.cc: New test.
