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247 Commits

Author SHA1 Message Date
Patrick Palka
813ad9c4dd libstdc++: Fix division by zero in std::sample 
This fixes a division by zero in the selection-sampling std::__sample
overload when the input range is empty (and hence __unsampled_sz is 0).

libstdc++-v3/ChangeLog:

	* include/bits/stl_algo.h (__sample): Exit early when the
	input range is empty.
	* testsuite/25_algorithms/sample/3.cc: New test.
 2020-09-21 20:48:23 -04:00
Patrick Palka
f017952d31 libstdc++: Mark some more algorithms constexpr for C++20 
As per P0202.

libstdc++-v3/ChangeLog:

	* include/bits/stl_algo.h (for_each_n): Mark constexpr for C++20.
	(search): Likewise for the overload that takes a searcher.
	* testsuite/25_algorithms/for_each/constexpr.cc: Test constexpr
	std::for_each_n.
	* testsuite/25_algorithms/search/constexpr.cc: Test constexpr
	std::search overload that takes a searcher.
 2020-09-21 20:48:17 -04:00
Jonathan Wakely
988fb2f597 libstdc++: Skip PSTL tests when installed TBB is too old [PR 96718] 
These tests do not actually require TBB, because they only inspect the
feature test macros present in the headers. However, if TBB is installed
then its headers will be included, and the version will be checked. If
the version is too old, compilation fails due to a #error directive.

This change disables the tests if TBB is not present, so that we skip
them instead of failing.

libstdc++-v3/ChangeLog:

	PR libstdc++/96718
	* testsuite/25_algorithms/pstl/feature_test-2.cc: Require
	tbb-backend effective target.
	* testsuite/25_algorithms/pstl/feature_test-3.cc: Likewise.
	* testsuite/25_algorithms/pstl/feature_test-5.cc: Likewise.
	* testsuite/25_algorithms/pstl/feature_test.cc: Likewise.
 2020-08-21 12:01:05 +01:00
Jonathan Wakely
6458742a15 libstdc++: Ensure c++NN effective target present in all C++17 tests 
Also reorder some directives so that the dg-options setting -std=gnu++17
comes before the dg-do that requires c++17.

libstdc++-v3/ChangeLog:

	* testsuite/17_intro/headers/c++2017/all_attributes.cc: Add
	c++17 effective-target.
	* testsuite/17_intro/headers/c++2017/all_no_exceptions.cc:
	Likewise.
	* testsuite/17_intro/headers/c++2017/all_no_rtti.cc: Likewise.
	* testsuite/17_intro/headers/c++2017/all_pedantic_errors.cc:
	Likewise.
	* testsuite/17_intro/headers/c++2017/operator_names.cc:
	Likewise.
	* testsuite/17_intro/headers/c++2017/stdc++.cc: Likewise.
	* testsuite/17_intro/headers/c++2017/stdc++_multiple_inclusion.cc:
	Likewise.
	* testsuite/18_support/uncaught_exceptions/uncaught_exceptions.cc:
	Likewise.
	* testsuite/19_diagnostics/error_code/is_error_code_v.cc:
	Likewise.
	* testsuite/20_util/any/assign/1.cc: Likewise.
	* testsuite/20_util/any/assign/2.cc: Likewise.
	* testsuite/20_util/any/assign/emplace.cc: Likewise.
	* testsuite/20_util/any/assign/exception.cc: Likewise.
	* testsuite/20_util/any/assign/self.cc: Likewise.
	* testsuite/20_util/any/cons/1.cc: Likewise.
	* testsuite/20_util/any/cons/2.cc: Likewise.
	* testsuite/20_util/any/cons/aligned.cc: Likewise.
	* testsuite/20_util/any/cons/explicit.cc: Likewise.
	* testsuite/20_util/any/cons/in_place.cc: Likewise.
	* testsuite/20_util/any/cons/nontrivial.cc: Likewise.
	* testsuite/20_util/any/make_any.cc: Likewise.
	* testsuite/20_util/any/misc/any_cast.cc: Likewise.
	* testsuite/20_util/any/misc/any_cast_no_rtti.cc: Likewise.
	* testsuite/20_util/any/misc/swap.cc: Likewise.
	* testsuite/20_util/any/modifiers/1.cc: Likewise.
	* testsuite/20_util/any/observers/type.cc: Likewise.
	* testsuite/20_util/any/requirements.cc: Likewise.
	* testsuite/20_util/any/typedefs.cc: Likewise.
	* testsuite/20_util/as_const/1.cc: Likewise.
	* testsuite/20_util/as_const/rvalue_neg.cc: Likewise.
	* testsuite/20_util/bind/is_placeholder_v.cc: Likewise.
	* testsuite/20_util/bool_constant/requirements.cc: Likewise.
	* testsuite/20_util/duration/requirements/treat_as_floating_point_v.cc:
	Likewise.
	* testsuite/20_util/duration_cast/rounding.cc: Likewise.
	* testsuite/20_util/enable_shared_from_this/members/weak_from_this.cc:
	Likewise.
	* testsuite/20_util/function_objects/invoke/59768.cc: Likewise.
	* testsuite/20_util/function_objects/not_fn/1.cc: Likewise.
	* testsuite/20_util/function_objects/searchers.cc: Likewise.
	* testsuite/20_util/in_place/requirements.cc: Likewise.
	* testsuite/20_util/is_invocable/requirements/explicit_instantiation.cc:
	Likewise.
	* testsuite/20_util/is_invocable/requirements/typedefs.cc:
	Likewise.
	* testsuite/20_util/is_invocable/value.cc: Likewise.
	* testsuite/20_util/is_nothrow_invocable/requirements/explicit_instantiation.cc:
	Likewise.
	* testsuite/20_util/is_nothrow_invocable/requirements/typedefs.cc:
	Likewise.
	* testsuite/20_util/is_nothrow_swappable/requirements/explicit_instantiation.cc:
	Likewise.
	* testsuite/20_util/is_nothrow_swappable/requirements/typedefs.cc:
	Likewise.
	* testsuite/20_util/is_nothrow_swappable/value.cc: Likewise.
	* testsuite/20_util/is_nothrow_swappable_with/requirements/explicit_instantiation.cc:
	Likewise.
	* testsuite/20_util/is_nothrow_swappable_with/requirements/typedefs.cc:
	Likewise.
	* testsuite/20_util/is_nothrow_swappable_with/value.cc:
	Likewise.
	* testsuite/20_util/is_swappable/requirements/explicit_instantiation.cc:
	Likewise.
	* testsuite/20_util/is_swappable/requirements/typedefs.cc:
	Likewise.
	* testsuite/20_util/is_swappable/value.cc: Likewise.
	* testsuite/20_util/is_swappable_with/requirements/explicit_instantiation.cc:
	Likewise.
	* testsuite/20_util/is_swappable_with/requirements/typedefs.cc:
	Likewise.
	* testsuite/20_util/is_swappable_with/value.cc: Likewise.
	* testsuite/20_util/logical_traits/requirements/explicit_instantiation.cc:
	Likewise.
	* testsuite/20_util/logical_traits/requirements/typedefs.cc:
	Likewise.
	* testsuite/20_util/logical_traits/value.cc: Likewise.
	* testsuite/20_util/optional/constexpr/make_optional.cc: Likewise.
	* testsuite/20_util/optional/constexpr/observers/2.cc: Likewise.
	* testsuite/20_util/optional/constexpr/observers/3.cc: Likewise.
	* testsuite/20_util/optional/hash.cc: Likewise.
	* testsuite/20_util/pair/swap_cxx17.cc: Likewise.
	* testsuite/20_util/ratio/requirements/ratio_equal_v.cc: Likewise.
	* testsuite/20_util/shared_ptr/requirements/weak_type.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/memory_management_tools/1.cc:
	Likewise.
	* testsuite/20_util/tuple/apply/1.cc: Likewise.
	* testsuite/20_util/tuple/make_from_tuple/1.cc: Likewise.
	* testsuite/20_util/tuple/swap_cxx17.cc: Likewise.
	* testsuite/20_util/tuple/tuple_size_v.cc: Likewise.
	* testsuite/20_util/unique_ptr/specialized_algorithms/swap_cxx17.cc:
	Likewise.
	* testsuite/20_util/uses_allocator/requirements/uses_allocator_v.cc:
	Likewise.
	* testsuite/20_util/variant/any.cc: Likewise.
	* testsuite/20_util/variant/compile.cc: Likewise.
	* testsuite/20_util/variant/hash.cc: Likewise.
	* testsuite/20_util/variant/index_type.cc: Likewise.
	* testsuite/20_util/variant/run.cc: Likewise.
	* testsuite/20_util/void_t/1.cc: Likewise.
	* testsuite/21_strings/basic_string/79162.cc: Likewise.
	* testsuite/21_strings/basic_string/cons/char/7.cc: Likewise.
	* testsuite/21_strings/basic_string/cons/wchar_t/7.cc: Likewise.
	* testsuite/21_strings/basic_string/lwg2758.cc: Likewise.
	* testsuite/21_strings/basic_string/lwg2946.cc: Likewise.
	* testsuite/21_strings/basic_string/modifiers/append/char/4.cc:
	Likewise.
	* testsuite/21_strings/basic_string/modifiers/append/wchar_t/4.cc:
	Likewise.
	* testsuite/21_strings/basic_string/modifiers/assign/char/4.cc:
	Likewise.
	* testsuite/21_strings/basic_string/modifiers/assign/wchar_t/4.cc:
	Likewise.
	* testsuite/21_strings/basic_string/modifiers/insert/char/3.cc:
	Likewise.
	* testsuite/21_strings/basic_string/modifiers/insert/wchar_t/3.cc:
	Likewise.
	* testsuite/21_strings/basic_string/modifiers/replace/char/7.cc:
	Likewise.
	* testsuite/21_strings/basic_string/modifiers/replace/wchar_t/7.cc:
	Likewise.
	* testsuite/21_strings/basic_string/operations/compare/char/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string/operations/data/char/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string/operations/data/wchar_t/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string/operations/find/char/5.cc:
	Likewise.
	* testsuite/21_strings/basic_string/operations/find/wchar_t/5.cc:
	Likewise.
	* testsuite/21_strings/basic_string/operators/char/5.cc: Likewise.
	* testsuite/21_strings/basic_string/operators/wchar_t/5.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/capacity/1.cc: Likewise.
	* testsuite/21_strings/basic_string_view/cons/char/1.cc: Likewise.
	* testsuite/21_strings/basic_string_view/cons/char/2.cc: Likewise.
	* testsuite/21_strings/basic_string_view/cons/char/3.cc: Likewise.
	* testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/cons/wchar_t/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/cons/wchar_t/3.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/element_access/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/element_access/char/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/element_access/char/front_back.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/element_access/wchar_t/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/element_access/wchar_t/empty.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/element_access/wchar_t/front_back.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/include.cc: Likewise.
	* testsuite/21_strings/basic_string_view/inserters/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/inserters/char/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/inserters/char/3.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/inserters/pod/10081-out.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/inserters/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/inserters/wchar_t/3.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/literals/types.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/literals/values-char8_t.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/literals/values.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/compare/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/compare/char/13650.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/compare/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/compare/wchar_t/13650.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/copy/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/data/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/data/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/find/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/find/char/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/find/char/3.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/find/char/4.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/find/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/find/wchar_t/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/find/wchar_t/3.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/find/wchar_t/4.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/rfind/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/rfind/char/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/rfind/char/3.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/2.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/3.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/string_conversion/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/substr/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/operations/substr/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/range_access/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/typedefs.cc: Likewise.
	* testsuite/21_strings/basic_string_view/types/1.cc: Likewise.
	* testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
	Likewise.
	* testsuite/23_containers/map/modifiers/extract.cc: Likewise.
	* testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
	Likewise.
	* testsuite/23_containers/map/modifiers/merge.cc: Likewise.
	* testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
	* testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
	* testsuite/23_containers/multimap/modifiers/merge.cc: Likewise.
	* testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
	* testsuite/23_containers/multiset/modifiers/merge.cc: Likewise.
	* testsuite/23_containers/set/modifiers/extract.cc: Likewise.
	* testsuite/23_containers/set/modifiers/merge.cc: Likewise.
	* testsuite/23_containers/unordered_map/modifiers/extract.cc:
	Likewise.
	* testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc:
	Likewise.
	* testsuite/23_containers/unordered_map/modifiers/merge.cc:
	Likewise.
	* testsuite/23_containers/unordered_map/modifiers/try_emplace.cc:
	Likewise.
	* testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
	Likewise.
	* testsuite/23_containers/unordered_multimap/modifiers/merge.cc:
	Likewise.
	* testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
	Likewise.
	* testsuite/23_containers/unordered_multiset/modifiers/merge.cc:
	Likewise.
	* testsuite/23_containers/unordered_set/modifiers/extract.cc:
	Likewise.
	* testsuite/23_containers/unordered_set/modifiers/merge.cc:
	Likewise.
	* testsuite/24_iterators/headers/iterator/range_access_c++17.cc:
	Likewise.
	* testsuite/24_iterators/headers/iterator/synopsis_c++17.cc:
	Likewise.
	* testsuite/25_algorithms/clamp/1.cc: Likewise.
	* testsuite/25_algorithms/clamp/2.cc: Likewise.
	* testsuite/25_algorithms/clamp/constexpr.cc: Likewise.
	* testsuite/25_algorithms/clamp/requirements/explicit_instantiation/1.cc:
	Likewise.
	* testsuite/25_algorithms/clamp/requirements/explicit_instantiation/pod.cc:
	Likewise.
	* testsuite/26_numerics/headers/cmath/functions_std_c++17.cc:
	Likewise.
	* testsuite/26_numerics/headers/cmath/special_functions_global.cc:
	Likewise.
	* testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc:
	Likewise.
	* testsuite/29_atomics/atomic/is_always_lock_free.cc: Likewise.
	* testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
	Likewise.
	* testsuite/30_threads/shared_lock/70766.cc: Likewise.
	* testsuite/30_threads/shared_mutex/cons/1.cc: Likewise.
	* testsuite/30_threads/shared_mutex/cons/assign_neg.cc:
	Likewise.
	* testsuite/30_threads/shared_mutex/cons/copy_neg.cc:
	Likewise.
	* testsuite/30_threads/shared_mutex/requirements/standard_layout.cc:
	Likewise.
	* testsuite/30_threads/shared_mutex/try_lock/1.cc: Likewise.
	* testsuite/30_threads/shared_mutex/try_lock/2.cc: Likewise.
	* testsuite/30_threads/shared_mutex/unlock/1.cc: Likewise.
 2020-07-31 19:58:02 +01:00
Patrick Palka
a73051a0ea libstdc++: Fix some ranges algos optimizations [PR95578] 
ranges::copy and a number of other ranges algorithms have unwrapping
optimizations for iterators of type __normal_iterator, move_iterator and
reverse_iterator.  But in the checks that guard these optimizations we
currently only test that the iterator of the iterator/sentinel pair has
the appropriate type before proceeding with the corresponding
optimization, and do not also test the sentinel type.

This breaks the testcase in this PR because this testcase constructs via
range adaptors a range whose begin() is a __normal_iterator and whose
end() is a custom sentinel type, and then performs ranges::copy on it.
From there we bogusly perform the __normal_iterator unwrapping
optimization on this iterator/sentinel pair, which immediately leads to
a constraint failure since the custom sentinel type does not model
sentinel_for<int*>.

This patch fixes this issue by refining each of the problematic checks
to also test that the iterator and sentinel types are the same before
applying the corresponding unwrapping optimization.  Along the way, some
code simplifications are made.

libstdc++-v3/ChangeLog:

	PR libstdc++/95578
	* include/bits/ranges_algo.h (__lexicographical_compare_fn):
	Also check that the iterator and sentinel have the same type before
	applying the unwrapping optimization for __normal_iterator.
	Split the check into two, one for the first iterator/sentinel
	pair and another for second iterator/sentinel pair.  Remove uses
	of __niter_base, and remove uses of std::move on a
	__normal_iterator.
	* include/bits/ranges_algobase.h (__equal_fn): Likewise.
	(__copy_or_move): Likewise.  Perform similar adjustments for
	the reverse_iterator and move_iterator optimizations.  Inline
	the checks into the if-constexprs, and use using-declarations to
	make them less visually noisy.  Remove uses of __niter_wrap.
	(__copy_or_move_backward): Likewise.
	* testsuite/25_algorithms/copy/95578.cc: New test.
	* testsuite/25_algorithms/copy_backward/95578.cc: New test.
	* testsuite/25_algorithms/equal/95578.cc: New test.
	* testsuite/25_algorithms/lexicographical_compare/95578.cc: New test.
	* testsuite/25_algorithms/move/95578.cc: New test.
	* testsuite/25_algorithms/move_backward/95578.cc: New test.
 2020-06-10 17:37:53 -04:00
François Dumont
3a391adf7a libstdc++: Extend memcmp optimization in std::lexicographical_compare 
Make the memcmp optimization work for std::deque iterators and safe
iterators.

Co-authored-by: Jonathan Wakely  <jwakely@redhat.com>

libstdc++-v3/ChangeLog:

2020-06-08  François Dumont  <fdumont@gcc.gnu.org>
	    Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/deque.tcc (__lex_cmp_dit): New.
	(__lexicographical_compare_aux1): Define overloads for deque
	iterators.
	* include/bits/stl_algobase.h (__lexicographical_compare::__3way):
	New static member function.
	(__lexicographical_compare<true>::__3way): Likewise.
	(__lexicographical_compare<true>::__lc): Use __3way.
	(__lexicographical_compare_aux): Rename to
	__lexicographical_compare_aux1 and declare overloads for deque
	iterators.
	(__lexicographical_compare_aux): Define new forwarding function
	that calls __lexicographical_compare_aux1 and declare new overloads
	for safe iterators.
	(lexicographical_compare): Do not use __niter_base on
	parameters.
	* include/debug/safe_iterator.tcc
	(__lexicographical_compare_aux): Define overloads for safe
	iterators.
	* testsuite/25_algorithms/lexicographical_compare/1.cc: Add
	checks with random access iterators.
	* testsuite/25_algorithms/lexicographical_compare/deque_iterators/1.cc:
	New test.
 2020-06-10 17:48:56 +01:00
François Dumont
4e05c918d2 libstdc++: Specialize copy/copy_n for istreambuf_iterator and deque iterators 
Add __copy_n_a overloads for std::deque iterators to replace with C memmove
when possible. Expose std::copy_n implementation details in pre-C++11 modes
and use it for std::copy overloads.

libstdc++-v3/ChangeLog

	* include/bits/stl_algo.h (__copy_n_a): Move to ...
	* include/bits/stl_algobase.h (__copy_n_a): ...here. Add __strict
	parameter.
	(__copy_n_a(istreambuf_iterator<>, _Size, _Deque_iterator<>, bool)):
	Declare.
	(__niter_base(const _Safe_iterator<_Ite, _Seq,
	random_access_iterator_tag>&)): Declare.
	(__copy_move_a2(istreambuf_iterator<>, istreambuf_iterator<>,
	_Deque_iterator<>)): Declare.
	* include/bits/deque.tcc
	(__copy_move_a2(istreambuf_iterator<>, istreambuf_iterator<>,
	_Deque_iterator<>)): New.
	(__copy_n_a(istreambuf_iterator<>, _Size, _Deque_iterator<>, bool)):
	New.
	* include/bits/streambuf_iterator.h
	(__copy_n_a(istreambuf_iterator<>, _Size, _CharT*, bool)): Adapt.
	* include/debug/safe_iterator.tcc (__niter_base): New.
	* testsuite/25_algorithms/copy/streambuf_iterators/char/4.cc
	(test03): New.
	* testsuite/25_algorithms/copy/streambuf_iterators/char/debug/deque_neg.cc:
	New test.
	* testsuite/25_algorithms/copy_n/debug/istreambuf_ite_deque_neg.cc:
	New test.
	* testsuite/25_algorithms/copy_n/istreambuf_iterator/2.cc: New test.
	* testsuite/25_algorithms/copy_n/istreambuf_iterator/deque.cc:
	New test.
 2020-06-04 22:27:47 +02:00
Jonathan Wakely
e1008cd1d8 libstdc++: Make std::copy_n work with negative and non-integral sizes 
Since it was added in C++11, std::copy_n and std::ranges::copy_n should
do nothing given a negative size, but for random access iterators we add
the size to the iterator, possibly resulting in undefined behaviour.

Also, C++20 clarified that std::copy_n requires the Size type to be
convertible to an integral type. We previously assumed that it could be
directly used in arithmetic expressions, without conversion to an
integral type.

This also fixes a bug in the random_access_iterator_wrapper helper adds
some convenience aliases for using the iterator wrappers.

libstdc++-v3/ChangeLog:

	* include/bits/ranges_algobase.h (__copy_n_fn): Only call
	ranges::copy for positive values.
	* include/bits/stl_algo.h (copy_n): Convert Size argument to an
	integral type and only call __copy_n for positive values.
	* testsuite/util/testsuite_iterators.h
	(random_access_iterator_wrapper::operator+=): Fix range check for
	negative values.
	(output_container, input_container, forward_container)
	(bidirectional_container, random_access_container): New alias
	templates.
	* testsuite/25_algorithms/copy_n/5.cc: New test.
 2020-06-04 14:21:34 +01:00
Jonathan Wakely
3cb0c7cc16 libstdc++: Fix function that can't be constexpr in C++11 (PR 95289) 
The body of this function isn't just a return statement, so it can't be
constexpr until C++14.

	PR libstdc++/95289
	* include/debug/helper_functions.h (__get_distance): Only declare
	as a constexpr function for C++14 and up.
	* testsuite/25_algorithms/copy/debug/95289.cc: New test.
 2020-05-23 18:27:35 +01:00
François Dumont
72a54e5e81 libstdc++ std::fill overload for std::vector<bool>::iterator 
Extend the overload so that it is used even when _GLIBCXX_DEBUG mode
is activated.

	* include/bits/stl_algobase.h (struct _Bit_iterator): New declaration.
	(std::__fill_a1(_Bit_iterator, _Bit_iterator, const bool&)): Likewise.
	* include/bits/stl_bvector.h (__fill_bvector): Move outside
	_GLIBCXX_STD_C namespace.
	(fill(_Bit_iterator, _Bit_iterator, const bool&)): Likewise and rename
	into...
	(__fill_a1): ...this.
	* testsuite/25_algorithms/fill/bvector/1.cc: New.
 2020-05-06 23:28:22 +02:00
Jonathan Wakely
22b6b5d6cf libstdc++: Make byte-sized std::fill_n a constant expression (PR 94933) 
The overload for byte types uses memset and isn't constexpr. This adds
the specifier and uses std::is_constant_evaluated() to provide a
compile-time alternative.

	PR libstdc++/94933
	* include/bits/stl_algobase.h (__fill_a1): Make overload for byte types
	usable in constant expressions.
	* testsuite/25_algorithms/fill_n/constexpr.cc: Test with bytes and
	non-scalars.
 2020-05-03 13:33:15 +01:00
Jonathan Wakely
aac39307e8 libstdc++: Define __cpp_lib_execution feature test macro 
This macro has never been defined by libstdc++, despite supporting the
parallel algorithms. It should have a different value for C++17 and
C++20, because P1001R2 should not be supported in C++17, but
unsequenced_policy is defined for C++17 (see PR p4702).

	* include/std/execution (__cpp_lib_execution): Define to indicate
	support for P0024R2 and P1001R2.
	* include/std/version (__cpp_lib_execution): Define.
	* testsuite/25_algorithms/pstl/feature_test.cc: Only test macro
	defined by <algorithm>, move other tests to new tests ...
	* testsuite/25_algorithms/pstl/feature_test-2.cc: New test.
	* testsuite/25_algorithms/pstl/feature_test-3.cc: New test.
	* testsuite/25_algorithms/pstl/feature_test-4.cc: New test.
	* testsuite/25_algorithms/pstl/feature_test-5.cc: New test.
 2020-04-22 22:54:35 +01:00
Patrick Palka
712b182a8b libstdc++: Fix incorrect use of memset in ranges::fill_n (PR 94017) 
When deciding whether to perform the memset optimization in ranges::fill_n, we
were crucially neglecting to check that the output pointer's value type is a
byte type.  This patch adds such a check to the problematic condition in
ranges::fill_n.

At the same time, this patch relaxes the overly conservative
__is_byte<_Tp>::__value check that requires the fill type be a byte type.  It's
overly conservative because it means we won't enable the memset optimization in
the following example

  char c[100];
  ranges::fill(c, 37);

because the fill type is deduced to be int here.  Rather than requiring that the
fill type be a byte type, it seems safe to just require the fill type be an
integral type, which is what this patch does.

libstdc++-v3/ChangeLog:

	PR libstdc++/94017
	* include/bits/ranges_algobase.h (__fill_n_fn::operator()): Refine
	condition for when to use memset, making sure to additionally check that
	the output pointer's value type is a non-volatile byte type.  Instead of
	requiring that the fill type is a byte type, just require that it's an
	integral type.
	* testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc:
	New test.
	* testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc:
	New test.
	* testsuite/25_algorithms/fill/94013.cc: Uncomment part that was blocked
	by PR 94017.
	* testsuite/25_algorithms/fill/94017.cc: New test.
	* testsuite/25_algorithms/fill_n/94017.cc: New test.
 2020-03-03 22:46:39 -05:00
Jonathan Wakely
462f6c2041 libstdc++: Workaround is_trivially_copyable<volatile T> (PR 94013) 
Several algorithms check the is_trivially_copyable trait to decide
whether to dispatch to memmove or memcmp as an optimization. Since
r271435 (CWG DR 2094) the trait is true for volatile-qualified scalars,
but we can't use memmove or memcmp when the type is volatile. We need to
also check for volatile types.

This is complicated by the fact that in C++20 (but not earlier standards)
iterator_traits<volatile T*>::value_type is T, so we can't just check
whether the value_type is volatile.

The solution in this patch is to introduce new traits __memcpyable and
__memcmpable which combine into a single trait the checks for pointers,
the value types being the same, and the type being trivially copyable
but not volatile-qualified.

	PR libstdc++/94013
	* include/bits/cpp_type_traits.h (__memcpyable, __memcmpable): New
	traits to control when to use memmove and memcmp optimizations.
	(__is_nonvolatile_trivially_copyable): New helper trait.
	* include/bits/ranges_algo.h (__lexicographical_compare_fn): Do not
	use memcmp optimization with volatile data.
	* include/bits/ranges_algobase.h (__equal_fn): Use __memcmpable.
	(__copy_or_move, __copy_or_move_backward): Use __memcpyable.
	* include/bits/stl_algobase.h (__copy_move_a2): Use __memcpyable.
	(__copy_move_backward_a2): Likewise.
	(__equal_aux1): Use __memcmpable.
	(__lexicographical_compare_aux): Do not use memcmp optimization with
	volatile data.
	* testsuite/25_algorithms/copy/94013.cc: New test.
	* testsuite/25_algorithms/copy_backward/94013.cc: New test.
	* testsuite/25_algorithms/equal/94013.cc: New test.
	* testsuite/25_algorithms/fill/94013.cc: New test.
	* testsuite/25_algorithms/lexicographical_compare/94013.cc: New test.
	* testsuite/25_algorithms/move/94013.cc: New test.
	* testsuite/25_algorithms/move_backward/94013.cc: New test.
 2020-03-03 21:39:19 +00:00
Jonathan Wakely
d112e173ea libstdc++: Fix std::lexicographic_compare for unsigned char (PR 93972) 
The new 25_algorithms/lexicographical_compare/93972.cc test fails on
targets where char is unsigned, revealing an existing regression with
the std::__memcmp helper that had gone unnoticed in
std::lexicographical_compare. When comparing char and unsigned char, the
memcmp optimisation is enabled, but the new std::__memcmp function fails
to compile for mismatched types.

	PR libstdc++/93972
	* include/bits/stl_algobase.h (__memcmp): Allow pointer types to
	differ.
	* testsuite/25_algorithms/lexicographical_compare/uchar.cc: New test.
 2020-03-02 17:03:28 +00:00
Patrick Palka
ce33801fe4 libstdc++: Fix bogus use of memcmp in ranges::lexicographical_compare (PR 93972) 
We were enabling the memcmp optimization in ranges::lexicographical_compare for
signed integral types and for integral types wider than a byte.  But memcmp
gives the wrong answer for arrays of such types.  This patch fixes this issue by
refining the condition that enables the memcmp optimization.  It's now
consistent with the corresponding condition used in
std::lexicographical_compare.

libstdc++-v3/ChangeLog:

	PR libstdc++/93972
	* include/bits/ranges_algo.h (__lexicographical_compare_fn::operator()):
	Fix condition for when to use memcmp, making it consistent with the
	corresponding condition used in std::lexicographical_compare.
	* testsuite/25_algorithms/lexicographical_compare/93972.cc: New test.
 2020-02-28 17:55:44 -05:00
Patrick Palka
10a32d4798 libstdc++: -D_GLIBCXX_DEBUG fixes in the constrained algos tests 
This fixes the failures in the constrained algos tests when they are run in
debug mode.

libstdc++-v3/ChangeLog:

	* testsuite/25_algorithms/copy/constrained.cc: Don't assume that the
	base() of a vector<>::iterator is a pointer.
	* testsuite/25_algorithms/copy_backward/constrained.cc: Likewise.
	* testsuite/25_algorithms/move/constrained.cc: Likewise.
	* testsuite/25_algorithms/move_backward/constrained.cc: Likewise.
	* testsuite/25_algorithms/inplace_merge/constrained.cc: Use foo.data()
	instead of &foo[0].
	* testsuite/25_algorithms/partial_sort/constrained.cc: Likewise.
	* testsuite/25_algorithms/partial_sort_copy/constrained.cc: Likewise.
	* testsuite/25_algorithms/shuffle/constrained.cc: Likewise.
	* testsuite/25_algorithms/sort/constrained.cc: Likewise.
	* testsuite/25_algorithms/stable_sort/constrained.cc: Likewise.
 2020-02-27 12:47:17 -05:00
Jonathan Wakely
eb8e6a30a4 libstdc++: Make _GLIBCXX_CONCEPT_CHECKS more constexpr-friendly 
Although most of the old-style "concept checks" are only really usable
with C++98 because they enforce the wrong things, this is a simple
change that makes them a bit more useful for C++14 and up.

	* include/bits/boost_concept_check.h (__function_requires): Add
	_GLIBCXX14_CONSTEXPR.
	* testsuite/25_algorithms/min/concept_checks.cc: New test.
 2020-02-27 10:52:28 +00:00
Jonathan Wakely
490350a11f libstdc++: Remove __memmove wrapper for constexpr algorithms 
The mutating sequence algorithms std::copy, std::copy_backward,
std::move and std::move_backward conditionally use __builtin_memmove
for trivially copyable types. However, because memmove isn't usable in
constant expressions the use of __builtin_memmove is wrapped in a
__memmove function which replaces __builtin_memmove with a handwritten
loop when std::is_constant_evaluated() is true.

This means we have a manual loop for non-trivially copyable cases, and a
different manual loop for trivially copyable but constexpr cases. The
latter loop has incorrect semantics for the {copy,move}_backward cases
and so isn't used for them. Until earlier today the latter loop also had
incorrect semantics for the std::move cases, trying to move from const
rvalues.

The approach taken by this patch is to remove the __memmove function
entirely and use the original (and correct) manual loops for the
constexpr cases as well as the non-trivially copyable cases. This was
already done for move_backward and copy_backward, but was incorrectly
turning copy_backward into move_backward, by failing to use the _IsMove
constant to select the right specialization. This patch also fixes that.

	* include/bits/ranges_algobase.h (__copy_or_move): Do not use memmove
	during constant evaluation. Call __builtin_memmove directly instead of
	__memmove.
	(__copy_or_move_backward): Likewise.
	* include/bits/stl_algobase.h (__memmove): Remove.
	(__copy_move<M, true, random_access_iterator_tag>::__copy_m)
	(__copy_move_backward<M, true, random_access_iterator_tag>::__copy_m):
	Use __builtin_memmove directly instead of __memmove.
	(__copy_move_a2): Do not use memmove during constant evaluation.
	(__copy_move_backward_a2): Use _IsMove constant to select correct
	__copy_move_backward specialization.
	* testsuite/25_algorithms/copy_backward/constexpr.cc: Check for copies
	begin turned into moves during constant evaluation.
 2020-02-25 17:01:50 +00:00
Jonathan Wakely
6de946e65c libstdc++: Add test accidentally left out of previous commit 
* testsuite/25_algorithms/move_backward/93872.cc: Add test left out of
	previous commit.
 2020-02-25 12:42:03 +00:00
Jonathan Wakely
5b904f175f libstdc++: Fix regression in std::move algorithm (PR 93872) 
The std::move and std::move_backward algorithms dispatch to the
std::__memmove helper when appropriate. That function uses a
pointer-to-const for the source values, preventing them from being
moved. The two callers of that function have the same problem.

Rather than altering __memmove and its callers to work with const or
non-const source pointers, this takes a more conservative approach of
casting away the const at the point where we want to do a move
assignment. This relies on the fact that we only use __memmove when the
type is trivially copyable, so we know the move assignment doesn't alter
the source anyway.

	PR libstdc++/93872
	* include/bits/stl_algobase.h (__memmove): Cast away const before
	doing move assignment.
	* testsuite/25_algorithms/move/93872.cc: New test.
	* testsuite/25_algorithms/move_backward/93872.cc: New test.
 2020-02-25 12:21:44 +00:00
Patrick Palka
c5eab4ed45 libstdc++: P0769R2 Add shift to <algorithm> 
This patch adds std::shift_left and std::shift_right as per P0769R2.  Alhough
these are STL-style algos, this patch places them in <bits/ranges_algo.h>
because they make use of some functions in the ranges namespace that are more
easily reachable from <bits/ranges_algo.h> than from <bits/stl_algo.h>, namely
ranges::next.  In order to place these algos in <bits/stl_algo.h>, we would need
to include <bits/range_access.h> from <bits/stl_algo.h> which would undesirably
increase the size of <bits/stl_algo.h>.

libstdc++-v3/ChangeLog:

	P0769R2 Add shift to <algorithm>
	* include/bits/ranges_algo.h (shift_left, shift_right): New.
	* testsuite/25_algorithms/shift_left/1.cc: New test.
	* testsuite/25_algorithms/shift_right/1.cc: New test.
 2020-02-24 10:08:57 -05:00
Patrick Palka
aa667c3f36 libstdc++: P2106R0 Alternative wording for GB315 and GB316 
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.
 2020-02-18 11:06:50 -05:00
Patrick Palka
f316994199 libstdc++: P1243R4 Rangify new algorithms 
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.
 2020-02-18 11:06:49 -05:00
Patrick Palka
bc4646410a libstdc++: Implement C++20 constrained algorithms 
This patch implements the C++20 ranges overloads for the algorithms in
[algorithms].  Most of the algorithms were reimplemented, with each of their
implementations very closely following the existing implementation in
bits/stl_algo.h and bits/stl_algobase.h.  The reason for reimplementing most of
the algorithms instead of forwarding to their STL-style overload is because
forwarding cannot be conformantly and efficiently performed for algorithms that
operate on non-random-access iterators.  But algorithms that operate on random
access iterators can safely and efficiently be forwarded to the STL-style
implementation, and this patch does so for push_heap, pop_heap, make_heap,
sort_heap, sort, stable_sort, nth_element, inplace_merge and stable_partition.

What's missing from this patch is debug-iterator and container specializations
that are present for some of the STL-style algorithms that need to be ported
over to the ranges algos.  I marked them missing at TODO comments.  There are
also some other minor outstanding TODOs.

The code that could use the most thorough review is ranges::__copy_or_move,
ranges::__copy_or_move_backward, ranges::__equal and
ranges::__lexicographical_compare.  In the tests, I tried to test the interface
of each new overload, as well as the correctness of the new implementation.

libstdc++-v3/ChangeLog:

	Implement C++20 constrained algorithms
	* include/Makefile.am: Add new header.
	* include/Makefile.in: Regenerate.
	* include/std/algorithm: Include <bits/ranges_algo.h>.
	* include/bits/ranges_algo.h: New file.
	* testsuite/25_algorithms/adjacent_find/constrained.cc: New test.
	* testsuite/25_algorithms/all_of/constrained.cc: New test.
	* testsuite/25_algorithms/any_of/constrained.cc: New test.
	* testsuite/25_algorithms/binary_search/constrained.cc: New test.
	* testsuite/25_algorithms/copy/constrained.cc: New test.
	* testsuite/25_algorithms/copy_backward/constrained.cc: New test.
	* testsuite/25_algorithms/copy_if/constrained.cc: New test.
	* testsuite/25_algorithms/copy_n/constrained.cc: New test.
	* testsuite/25_algorithms/count/constrained.cc: New test.
	* testsuite/25_algorithms/count_if/constrained.cc: New test.
	* testsuite/25_algorithms/equal/constrained.cc: New test.
	* testsuite/25_algorithms/equal_range/constrained.cc: New test.
	* testsuite/25_algorithms/fill/constrained.cc: New test.
	* testsuite/25_algorithms/fill_n/constrained.cc: New test.
	* testsuite/25_algorithms/find/constrained.cc: New test.
	* testsuite/25_algorithms/find_end/constrained.cc: New test.
	* testsuite/25_algorithms/find_first_of/constrained.cc: New test.
	* testsuite/25_algorithms/find_if/constrained.cc: New test.
	* testsuite/25_algorithms/find_if_not/constrained.cc: New test.
	* testsuite/25_algorithms/for_each/constrained.cc: New test.
	* testsuite/25_algorithms/generate/constrained.cc: New test.
	* testsuite/25_algorithms/generate_n/constrained.cc: New test.
	* testsuite/25_algorithms/heap/constrained.cc: New test.
	* testsuite/25_algorithms/includes/constrained.cc: New test.
	* testsuite/25_algorithms/inplace_merge/constrained.cc: New test.
	* testsuite/25_algorithms/is_partitioned/constrained.cc: New test.
	* testsuite/25_algorithms/is_permutation/constrained.cc: New test.
	* testsuite/25_algorithms/is_sorted/constrained.cc: New test.
	* testsuite/25_algorithms/is_sorted_until/constrained.cc: New test.
	* testsuite/25_algorithms/lexicographical_compare/constrained.cc: New
	test.
	* testsuite/25_algorithms/lower_bound/constrained.cc: New test.
	* testsuite/25_algorithms/max/constrained.cc: New test.
	* testsuite/25_algorithms/max_element/constrained.cc: New test.
	* testsuite/25_algorithms/merge/constrained.cc: New test.
	* testsuite/25_algorithms/min/constrained.cc: New test.
	* testsuite/25_algorithms/min_element/constrained.cc: New test.
	* testsuite/25_algorithms/minmax/constrained.cc: New test.
	* testsuite/25_algorithms/minmax_element/constrained.cc: New test.
	* testsuite/25_algorithms/mismatch/constrained.cc: New test.
	* testsuite/25_algorithms/move/constrained.cc: New test.
	* testsuite/25_algorithms/move_backward/constrained.cc: New test.
	* testsuite/25_algorithms/next_permutation/constrained.cc: New test.
	* testsuite/25_algorithms/none_of/constrained.cc: New test.
	* testsuite/25_algorithms/nth_element/constrained.cc: New test.
	* testsuite/25_algorithms/partial_sort/constrained.cc: New test.
	* testsuite/25_algorithms/partial_sort_copy/constrained.cc: New test.
	* testsuite/25_algorithms/partition/constrained.cc: New test.
	* testsuite/25_algorithms/partition_copy/constrained.cc: New test.
	* testsuite/25_algorithms/partition_point/constrained.cc: New test.
	* testsuite/25_algorithms/prev_permutation/constrained.cc: New test.
	* testsuite/25_algorithms/remove/constrained.cc: New test.
	* testsuite/25_algorithms/remove_copy/constrained.cc: New test.
	* testsuite/25_algorithms/remove_copy_if/constrained.cc: New test.
	* testsuite/25_algorithms/remove_if/constrained.cc: New test.
	* testsuite/25_algorithms/replace/constrained.cc: New test.
	* testsuite/25_algorithms/replace_copy/constrained.cc: New test.
	* testsuite/25_algorithms/replace_copy_if/constrained.cc: New test.
	* testsuite/25_algorithms/replace_if/constrained.cc: New test.
	* testsuite/25_algorithms/reverse/constrained.cc: New test.
	* testsuite/25_algorithms/reverse_copy/constrained.cc: New test.
	* testsuite/25_algorithms/rotate/constrained.cc: New test.
	* testsuite/25_algorithms/rotate_copy/constrained.cc: New test.
	* testsuite/25_algorithms/search/constrained.cc: New test.
	* testsuite/25_algorithms/search_n/constrained.cc: New test.
	* testsuite/25_algorithms/set_difference/constrained.cc: New test.
	* testsuite/25_algorithms/set_intersection/constrained.cc: New test.
	* testsuite/25_algorithms/set_symmetric_difference/constrained.cc: New
	test.
	* testsuite/25_algorithms/set_union/constrained.cc: New test.
	* testsuite/25_algorithms/shuffle/constrained.cc: New test.
	* testsuite/25_algorithms/sort/constrained.cc: New test.
	* testsuite/25_algorithms/stable_partition/constrained.cc: New test.
	* testsuite/25_algorithms/stable_sort/constrained.cc: New test.
	* testsuite/25_algorithms/swap_ranges/constrained.cc: New test.
	* testsuite/25_algorithms/transform/constrained.cc: New test.
	* testsuite/25_algorithms/unique/constrained.cc: New test.
	* testsuite/25_algorithms/unique_copy/constrained.cc: New test.
	* testsuite/25_algorithms/upper_bound/constrained.cc: New test.
 2020-02-06 20:08:34 -05:00
Jonathan Wakely
78f02e8003 libstdc++: Fix testcase for C++98 compatibility 
* testsuite/25_algorithms/equal/deque_iterators/1.cc: Don't use C++11
	initialization syntax.

From-SVN: r280117
 2020-01-10 15:27:50 +00:00
Jakub Jelinek
8d9254fc8a Update copyright years. 
From-SVN: r279813
 2020-01-01 12:51:42 +01:00
François Dumont
6004c17b4d libstdc++: Rework std::copy/copy_backward/move/move_backward/fill/fill_n algos 
Enhance those algos overloads to generalize existing optimization for
__gnu_debug::_Safe_iterator w/o _GLIBCXX_DEBUG mode and for std::deque
 iterators.

Also extend __copy_move_a2 ostreambuf_iterator overloads to std::vector and
std::deque iterators.

	* include/bits/stl_algobase.h
	(__copy_move_a1<>(_II, _II, _OI)): New.
	(__copy_move_a1<>(_Deque_iterator<>, _Deque_iterator<>, _OI)): New.
	(__copy_move_a1<>(_Deque_iterator<>, _Deque_iterator<>,
	_Deque_iterator<>)): New.
	(__copy_move_a1<>(_II, _II, _Deque_iterator<>)): New.
	(__copy_move_a<>(_II, _II, _OI)): Adapt, call __copy_move_a1<>.
	(__copy_move_a<>(const _Safe_iterator<>&, const _Safe_iterator<>&,
	_OI)): New.
	(__copy_move_a<>(const _Safe_iterator<>&, const _Safe_iterator<>&,
	 const _Safe_iterator<>&)): New.
	(__copy_move_a<>(_II, _II, const _Safe_iterator<>&)): New.
	(copy, move): Adapt, call __copy_move_a.
	(__copy_move_backward_a1<>(_II, _II, _OI)): New,
	call __copy_move_backward_a2.
	(__copy_move_backward_a1<>(_Deque_iterator<>, _Deque_iterator<>, _OI)): New.
	(__copy_move_backward_a1<>(_Deque_iterator<>, _Deque_iterator<>,
	_Deque_iterator<>)): New.
	(__copy_move_backward_a1<>(_II, _II, _Deque_iterator<>)): New.
	(__copy_move_backward_a<>(_II, _II, _OI)): Adapt, call
	__copy_move_backward_a1<>.
	(__copy_move_backward_a<>(const _Safe_iterator<>&, const _Safe_iterator<>&,
	_OI)): New.
	(__copy_move_backward_a<>(const _Safe_iterator<>&, const _Safe_iterator<>&,
	 const _Safe_iterator<>&)): New.
	(__copy_move_backward_a<>(_II, _II, const _Safe_iterator<>&)): New.
	(copy_backward, move_backward): Adapt, call __copy_move_backward_a<>.
	(__fill_a): Rename into...
	(__fill_a1): ... this.
	(__fill_a1(__normal_iterator<>, __normal_iterator<>, const _Tp&)): New.
	(__fill_a1(const _Deque_iterator<>&, const _Deque_iterator<>&, _VTp)):
	New.
	(__fill_a(_FIte, _FIte, const _Tp&)): New, call __fill_a1.
	(__fill_a(const _Safe_iterator<>&, const _Safe_iterator<>&,
	const _Tp&)): New.
	(fill): Adapt, remove __niter_base usage.
	(__fill_n_a): Rename into...
	(__fill_n_a1): ...this.
	(__fill_n_a(const _Safe_iterator<>&, _Size, const _Tp&,
	input_iterator_tag)): New.
	(__fill_n_a(_OI, _Size, const _Tp&, output_iterator_tag)): New, call
	__fill_n_a1.
	(__fill_n_a(_OI, _Size, const _Tp&, random_access_iterator_tag)): New,
	call __fill_a.
	(__equal_aux): Rename into...
	(__equal_aux1): ...this.
	(__equal_aux1(_Deque_iterator<>, _Deque_iterator<>, _OI)): New.
	(__equal_aux1(_Deque_iterator<>, _Deque_iterator<>,
	_Deque_iterator<>)): New.
	(__equal_aux1(_II, _II, _Deque_iterator<>)): New.
	(__equal_aux(_II1, _II1, _II2)): New, call __equal_aux1.
	(__equal_aux(const _Safe_iterator<>&, const _Safe_iterator<>&,
	_OI)): New.
	(__equal_aux(const _Safe_iterator<>&, const _Safe_iterator<>&,
	 const _Safe_iterator<>&)): New.
	(__equal_aux(_II, _II, const _Safe_iterator<>&)): New.
	(equal(_II1, _II1, _II2)): Adapt.
	* include/bits/stl_deque.h
	(fill, copy, copy_backward, move, move_backward): Remove.
	* include/bits/deque.tcc: Include <bits/stl_algobase.h>.
	(__fill_a1): New.
	(__copy_move_dit): New.
	(__copy_move_a1): New, use latter.
	(__copy_move_a1(_II, _II, _Deque_iterator<>)): New.
	(__copy_move_backward_dit): New.
	(__copy_move_backward_a1): New, use latter.
	(__copy_move_backward_a1(_II, _II, _Deque_iterator<>)): New.
	(__equal_dit): New.
	(__equal_aux1): New, use latter.
	(__equal_aux1(_II, _II, _Deque_iterator<>)): New.
	* include/std/numeric (__is_random_access_iter): Move...
	* include/bits/stl_iterator_base_types.h (__is_random_access_iter): ...
	here. Provide pre-C++11 definition.
	* include/debug/debug.h (_Safe_iterator<>): New declaration.
	* include/debug/safe_iterator.h (_Safe_iterator<>::_M_can_advance): Add
	__strict parameter.
	* include/debug/safe_iterator.tcc: Include <bits/stl_algobase.h>.
	(_Safe_iterator<>::_M_can_advance): Adapt.
	(std::__copy_move_a, std::__copy_move_backward_a, __fill_a): New.
	(__fill_n_a, __equal_aux): New.
	* include/debug/stl_iterator.h (__niter_base): Remove.
	* include/debug/vector (__niter_base): Remove.
	* testsuite/performance/25_algorithms/copy_backward_deque_iterators.cc:
	Include <vector> and <list>. Add benches.
	* testsuite/performance/25_algorithms/copy_deque_iterators.cc: Likewise.
	* testsuite/performance/25_algorithms/equal_deque_iterators.cc: Likewise.
	* testsuite/25_algorithms/copy/debug/1_neg.cc: New.
	* testsuite/25_algorithms/copy/deque_iterators/2.cc: New.
	* testsuite/25_algorithms/copy/deque_iterators/31.cc: New.
	* testsuite/25_algorithms/copy/deque_iterators/32.cc: New.
	* testsuite/25_algorithms/copy/deque_iterators/33.cc: New.
	* testsuite/25_algorithms/copy/deque_iterators/41.cc: New.
	* testsuite/25_algorithms/copy/deque_iterators/42.cc: New.
	* testsuite/25_algorithms/copy/deque_iterators/43.cc: New.
	* testsuite/25_algorithms/copy/streambuf_iterators/char/4.cc (test02):
	New.
	* testsuite/25_algorithms/copy_backward/deque_iterators/2.cc: New.
	* testsuite/25_algorithms/equal/deque_iterators/1.cc: New.
	* testsuite/25_algorithms/fill/deque_iterators/1.cc: New.
	* testsuite/25_algorithms/move/deque_iterators/2.cc: New.
	* testsuite/25_algorithms/move_backward/deque_iterators/2.cc: New.

From-SVN: r279201
 2019-12-10 21:49:55 +00:00
Jonathan Wakely
f1355c8dda libstdc++: Define std::lexicographical_compare_three_way for C++20 
* include/bits/stl_algobase.h (lexicographical_compare_three_way):
	Define for C++20.
	* testsuite/25_algorithms/lexicographical_compare_three_way/1.cc: New
	test.
	* testsuite/25_algorithms/lexicographical_compare_three_way/
	constexpr.cc: New test.

From-SVN: r278996
 2019-12-05 12:46:50 +00:00
François Dumont
af4e8d4d5a libstdc++: Improve _GLIBCXX_DEBUG __valid_range check 
Adds iterator singular check within the valid range check.

	* include/debug/functions.h: Remove <bits/move.h> include.
	(__check_singular_aux, __check_singular): Move...
	* include/debug/helper_functions.h:
	(__check_singular_aux, __check_singular): ...here.
	(__valid_range_aux): Adapt to use latter.
	Add <bits/move.h> include.
	* testsuite/25_algorithms/copy/debug/2_neg.cc: New.

From-SVN: r278658
 2019-11-24 17:09:44 +00:00
Jonathan Wakely
3a99fd4dbb libstdc++: make negative count safe with std::for_each_n 
The Library Working Group have approved a change to std::for_each_n that
requires it to handle negative N gracefully, which we were not doing for
random access iterators.

	* include/bits/stl_algo.h (for_each_n): Handle negative count.
	* testsuite/25_algorithms/for_each/for_each_n_debug.cc: New test.

From-SVN: r277932
 2019-11-07 23:10:45 +00:00
François Dumont
8ab38f6cbc 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
 2019-10-06 15:29:04 +00:00
François Dumont
2c6374228b 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
 2019-10-06 10:29:35 +00:00
Jonathan Wakely
61e619b4fd Disable tests that aren't valid in parallel mode 
Tests that depend on debug mode can't be tested in parallel mode.

	* testsuite/17_intro/using_namespace_std_tr1_neg.cc: Skip test for
	parallel mode.
	* testsuite/20_util/hash/84998.cc: Likewise.
	* testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: Likewise.
	* testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: Likewise.
	* testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
	* testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
	* testsuite/23_containers/multimap/pmr_typedefs_debug.cc: Likewise.
	* testsuite/23_containers/multiset/pmr_typedefs_debug.cc: Likewise.
	* testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
	* testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
	Likewise.
	* testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
	Likewise.
	* testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
	Likewise.
	* testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
	Likewise.
	* testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
	Likewise.
	* testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: Likewise.
	* testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
	* testsuite/25_algorithms/copy/86658.cc: Likewise.
	* testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
	* testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
	* testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
	* testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.

From-SVN: r276430
 2019-10-01 22:02:17 +01:00
François Dumont
97d5766531 stl_algo.h (merge): Fix documentation. 
2019-09-28  François Dumont  <fdumont@gcc.gnu.org>

	* include/bits/stl_algo.h (merge): Fix documentation.
	* include/debug/functions.h (__check_sorted_aux): Add C++20 constexpr.
	(__check_sorted): Likewise and remove nested irreflexive check.
	(__check_sorted_set_aux, __check_sorted_set): Add C++20 constexpr.
	(__check_partitioned_lower, __check_partitioned_upper): Likewise.
	(_Irreflexive_checker::_S_is_valid): Likewise.
	(__is_irreflexive, __is_irreflexive_pred): Likewise.
	* include/debug/helper_functions.h (__get_distance): Add constexpr.
	(__valid_range_aux): Add C++20 constexpr.
	(__valid_range(_Iter, _Iter, _Distance_traits<_Iter>::__type&)):
	Likewise and add std::is_constant_evaluated check.
	(__valid_range_aux(_Iter, _Iter, std::input_iterator_tag)): New.
	(__valid_range_aux(_Iter, _Iter, std::random_accss_iterator_tag)): New.
	(__valid_range_aux(_Integral, _Integral, std::__true_type)): New,
	use latter.
	(__valid_range(_Iter, _Iter)): Adapt to use latter, add constexpr and
	__builtin_is_contant_evaludated check..
	(__can_advance, __base): Add constexpr.
	* include/debug/macros.h [_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED]
	(_GLIBCXX_DEBUG_VERIFY_COND_AT): New.
	(__glibcxx_check_sorted): Use __glibcxx_check_irreflexive.
	(__glibcxx_check_sorted_pred): Use __glibcxx_check_irreflexive_pred.
	* testsuite/25_algorithms/binary_search/constexpr.cc: Use irreflexive
	std::less.
	* testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
	* testsuite/25_algorithms/merge/constexpr.cc: Fix order in camm. Fix
	lambda to be irreflexive.

From-SVN: r276260
 2019-09-28 21:11:55 +00:00
Jonathan Wakely
52f6afe06d PR libstdc++/91748 fix std::for_each_n for random access iterators 
PR libstdc++/91748
	* include/bits/stl_algo.h (for_each_n): Fix random access iterator
	case.
	* testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
	access iterators.

From-SVN: r275683
 2019-09-12 11:51:39 +01:00
Edward Smith-Rowland
b30ee71a40 Implement C++20 p1424 - 'constexpr' feature macro concerns... 
2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>

	Implement C++20 p1424 - 'constexpr' feature macro concerns,
	Issue 3256 - Feature testing macro for constexpr algorithms,
	and Issue 3257 - Missing feature testing macro update from P0858.
	* include/std/version (__cpp_lib_constexpr_algorithms): Bump value.
	* include/bits/algorithmfwd.h: Ditto.
	* include/std/utility: Ditto.
	* testsuite/25_algorithms/constexpr_macro.cc: Ditto.
	* testsuite/25_algorithms/cpp_lib_constexpr.cc: New check for
	__cpp_lib_constexpr macro in <algorith>.
	* testsuite/20_util/exchange/constexpr.cc: Add check for
	__cpp_lib_constexpr macro in <utility>.
	* testsuite/25_algorithms/adjacent_find/constexpr.cc: Remove check for
	__cpp_lib_constexpr_algorithms.
	* testsuite/25_algorithms/all_of/constexpr.cc: Ditto.
	* testsuite/25_algorithms/any_of/constexpr.cc: Ditto.
	* testsuite/25_algorithms/binary_search/constexpr.cc: Ditto.
	* testsuite/25_algorithms/copy/constexpr.cc: Ditto.
	* testsuite/25_algorithms/copy_backward/constexpr.cc: Ditto.
	* testsuite/25_algorithms/copy_if/constexpr.cc: Ditto.
	* testsuite/25_algorithms/copy_n/constexpr.cc: Ditto.
	* testsuite/25_algorithms/count/constexpr.cc: Ditto.
	* testsuite/25_algorithms/count_if/constexpr.cc: Ditto.
	* testsuite/25_algorithms/equal/constexpr.cc: Ditto.
	* testsuite/25_algorithms/equal_range/constexpr.cc: Ditto.
	* testsuite/25_algorithms/fill/constexpr.cc: Ditto.
	* testsuite/25_algorithms/fill_n/constexpr.cc: Ditto.
	* testsuite/25_algorithms/find/constexpr.cc: Ditto.
	* testsuite/25_algorithms/find_end/constexpr.cc: Ditto.
	* testsuite/25_algorithms/find_first_of/constexpr.cc: Ditto.
	* testsuite/25_algorithms/find_if/constexpr.cc: Ditto.
	* testsuite/25_algorithms/find_if_not/constexpr.cc: Ditto.
	* testsuite/25_algorithms/for_each/constexpr.cc: Ditto.
	* testsuite/25_algorithms/generate/constexpr.cc: Ditto.
	* testsuite/25_algorithms/generate_n/constexpr.cc: Ditto.
	* testsuite/25_algorithms/is_heap/constexpr.cc: Ditto.
	* testsuite/25_algorithms/is_heap_until/constexpr.cc: Ditto.
	* testsuite/25_algorithms/is_partitioned/constexpr.cc: Ditto.
	* testsuite/25_algorithms/is_permutation/constexpr.cc: Ditto.
	* testsuite/25_algorithms/is_sorted/constexpr.cc: Ditto.
	* testsuite/25_algorithms/is_sorted_until/constexpr.cc: Ditto.
	* testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Ditto.
	* testsuite/25_algorithms/lower_bound/constexpr.cc: Ditto.
	* testsuite/25_algorithms/merge/constexpr.cc: Ditto.
	* testsuite/25_algorithms/mismatch/constexpr.cc: Ditto.
	* testsuite/25_algorithms/none_of/constexpr.cc: Ditto.
	* testsuite/25_algorithms/partition_copy/constexpr.cc: Ditto.
	* testsuite/25_algorithms/partition_point/constexpr.cc: Ditto.
	* testsuite/25_algorithms/remove/constexpr.cc: Ditto.
	* testsuite/25_algorithms/remove_copy/constexpr.cc: Ditto.
	* testsuite/25_algorithms/remove_copy_if/constexpr.cc: Ditto.
	* testsuite/25_algorithms/remove_if/constexpr.cc: Ditto.
	* testsuite/25_algorithms/replace_copy/constexpr.cc: Ditto.
	* testsuite/25_algorithms/replace_copy_if/constexpr.cc: Ditto.
	* testsuite/25_algorithms/replace_if/constexpr.cc: Ditto.
	* testsuite/25_algorithms/reverse_copy/constexpr.cc: Ditto.
	* testsuite/25_algorithms/rotate_copy/constexpr.cc: Ditto.
	* testsuite/25_algorithms/search/constexpr.cc: Ditto.
	* testsuite/25_algorithms/search_n/constexpr.cc: Ditto.
	* testsuite/25_algorithms/set_difference/constexpr.cc: Ditto.
	* testsuite/25_algorithms/set_intersection/constexpr.cc: Ditto.
	* testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Ditto.
	* testsuite/25_algorithms/set_union/constexpr.cc: Ditto.
	* testsuite/25_algorithms/transform/constexpr.cc: Ditto.
	* testsuite/25_algorithms/unique/constexpr.cc: Ditto.
	* testsuite/25_algorithms/unique_copy/constexpr.cc: Ditto.
	* testsuite/25_algorithms/upper_bound/constexpr.cc: Ditto.

From-SVN: r275560
 2019-09-10 03:38:58 +00:00
Edward Smith-Rowland
7a91c71099 Implement C++20 p0879 - Constexpr for swap and swap related functions. 
2019-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>

	Implement C++20 p0879 - Constexpr for swap and swap related functions.
	* include/std/version (__cpp_lib_constexpr_swap_algorithms): New macro.
	* include/bits/algorithmfwd.h (__cpp_lib_constexpr_swap_algorithms):
	New macro.
	(iter_swap, make_heap, next_permutation, partial_sort_copy, pop_heap)
	(prev_permutation, push_heap, reverse, rotate, sort_heap, swap)
	(swap_ranges, nth_element, partial_sort, sort): Add constexpr.
	* include/bits/move.h (swap): Add constexpr.
	* include/bits/stl_algo.h (__move_median_to_first, __reverse, reverse)
	(__gcd, __rotate, rotate, __partition, __heap_select)
	(__partial_sort_copy, partial_sort_copy, __unguarded_partition)
	(__unguarded_partition_pivot, __partial_sort, __introsort_loop, __sort)
	(__introselect, __chunk_insertion_sort, next_permutation)
	(prev_permutation, partition, partial_sort, nth_element, sort)
	(__iter_swap::iter_swap, iter_swap, swap_ranges): Add constexpr.
	* include/bits/stl_algobase.h (__iter_swap::iter_swap, iter_swap)
	(swap_ranges): Add constexpr.
	* include/bits/stl_heap.h (__push_heap, push_heap, __adjust_heap,
	__pop_heap, pop_heap, __make_heap, make_heap, __sort_heap, sort_heap):
	Add constexpr.
	* include/std/type_traits (swap): Add constexpr.
	* testsuite/25_algorithms/headers/algorithm/synopsis.cc: Add constexpr.
	* testsuite/25_algorithms/iter_swap/constexpr.cc: New test.
	* testsuite/25_algorithms/make_heap/constexpr.cc: New test.
	* testsuite/25_algorithms/next_permutation/constexpr.cc: New test.
	* testsuite/25_algorithms/nth_element/constexpr.cc: New test.
	* testsuite/25_algorithms/partial_sort/constexpr.cc: New test.
	* testsuite/25_algorithms/partial_sort_copy/constexpr.cc: New test.
	* testsuite/25_algorithms/partition/constexpr.cc: New test.
	* testsuite/25_algorithms/pop_heap/constexpr.cc: New test.
	* testsuite/25_algorithms/prev_permutation/constexpr.cc: New test.
	* testsuite/25_algorithms/push_heap/constexpr.cc: New test.
	* testsuite/25_algorithms/reverse/constexpr.cc: New test.
	* testsuite/25_algorithms/rotate/constexpr.cc: New test.
	* testsuite/25_algorithms/sort/constexpr.cc: New test.
	* testsuite/25_algorithms/sort_heap/constexpr.cc: New test.
	* testsuite/25_algorithms/swap/constexpr.cc: New test.
	* testsuite/25_algorithms/swap_ranges/constexpr.cc: New test.

From-SVN: r274488
 2019-08-14 17:54:15 +00:00
Edward Smith-Rowland
3a66e68ad9 Implement C++20 p0202 - Add Constexpr Modifiers to Functions in <algorithm> and <utility> Headers. 
2019-08-01  Edward Smith-Rowland  <3dw4rd@verizon.net>

	Implement C++20 p0202 - Add Constexpr Modifiers to Functions
	in <algorithm> and <utility> Headers.
	Implement C++20 p1023 - constexpr comparison operators for std::array.
	* include/bits/algorithmfwd.h (all_of, any_of, binary_search, copy,
	copy_backward, copy_if, copy_n, equal_range, fill, find_end,
	find_if_not, includes, is_heap, is_heap_until, is_partitioned,
	is_permutation, is_sorted, is_sorted_until, iter_swap, lower_bound,
	none_of, partition_copy, partition_point, remove, remove_if,
	remove_copy, remove_copy_if, replace_copy, replace_copy_if,
	reverse_copy, rotate_copy, uunique, upper_bound, adjacent_find, count,
	count_if, equal, find, find_first_of, find_if, for_each, generate,
	generate_n, lexicographical_compare, merge, mismatch, replace,
	replace_if, search, search_n, set_difference, set_intersection,
	set_symmetric_difference, set_union, transform, unique_copy):
	Mark constexpr.
	* include/bits/cpp_type_traits.h (__miter_base): Mark constexpr.
	* include/bits/predefined_ops.h (_Iter_less_val::operator(),
	_Val_less_iter::operator(), _Iter_equal_to_iter::operator(),
	_Iter_equal_to_val::operator(), _Iter_equals_val::operator()):
	 Use const ref instead of ref arg;
	(_Iter_less_val, __iter_less_val, _Val_less_iter, __val_less_iter,
	__iter_equal_to_iter, __iter_equal_to_val, __iter_comp_val,
	_Iter_comp_val, _Val_comp_iter, __val_comp_iter, __iter_equals_val,
	_Iter_equals_iter, __iter_comp_iter, _Iter_pred, __pred_iter,
	_Iter_comp_to_val, __iter_comp_val, _Iter_comp_to_iter,
	__iter_comp_iter): Mark constexpr.
	* include/bits/stl_algo.h (__find_if, __find_if_not, __find_if_not_n,
	__search, __search_n_aux, __search_n, __find_end, find_end, all_of,
	none_of, any_of, find_if_not, is_partitioned, partition_point,
	__remove_copy_if, remove_copy, remove_copy_if, copy_if, __copy_n,
	copy_n, partition_copy, __remove_if, remove, remove_if, __adjacent_find,
	__unique, unique, __unique_copy, reverse_copy, rotate_copy,
	__unguarded_linear_insert, __insertion_sort, __unguarded_insertion_sort,
	__final_insertion_sort, lower_bound, __upper_bound, upper_bound,
	__equal_range, equal_range, binary_search, __includes, includes,
	__next_permutation, __prev_permutation, __replace_copy_if, replace_copy,
	replace_copy_if, __count_if, is_sorted, __is_sorted_until,
	is_sorted_until, __is_permutation, is_permutation, for_each, find,
	find_if, find_first_of, adjacent_find, count, count_if, search,
	search_n, transform, replace, replace_if, generate, generate_n,
	unique_copy, __merge, merge, __set_union, set_union, __set_intersection,
	set_intersection, __set_difference, set_difference,
	__set_symmetric_difference, set_symmetric_difference):  Mark constexpr.
	* include/bits/stl_algobase.h (__memmove, __memcmp): New maybe constexpr
	wrappers around __builtin_memmove and __builtin_memcmp
	respectively;
	(__niter_base, __niter_wrap, __copy_m, __copy_move_a, __copy_move_a2,
	copy, move, __copy_move_b, __copy_move_backward_a,
	__copy_move_backward_a2, copy_backward, move_backward, __fill_a, fill,
	__fill_n_a, fill_n, equal, __lc_rai::__newlast1, __lc_rai::__cnd2,
	__lexicographical_compare_impl, __lexicographical_compare,
	__lexicographical_compare<true>::__lc, __lexicographical_compare_aux,
	__lower_bound, lower_bound, equal, __equal4, lexicographical_compare,
	__mismatch, mismatch, __is_heap_until, __is_heap, is_heap_until,
	is_heap): Mark constexpr.
	* include/bits/stl_heap.h (__is_heap_until, __is_heap, is_heap_until,
	is_heap): Mark constexpr.
	* include/bits/stl_iterator.h (__niter_base, __miter_base): Mark constexpr.
	* include/std/array: Make comparison ops constexpr.
	* include/std/utility: Make exchange constexpr.
	* include/std/version (__cpp_lib_constexpr_algorithms): New macro.
	* testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust.
	* testsuite/23_containers/array/tuple_interface/
	tuple_element_neg.cc: Adjust.
	* testsuite/20_util/exchange/constexpr.cc: New.
	* testsuite/23_containers/array/comparison_operators/constexpr.cc: New.
	* testsuite/25_algorithms/constexpr_macro.cc: New.
	* testsuite/25_algorithms/adjacent_find/constexpr.cc: New.
	* testsuite/25_algorithms/all_of/constexpr.cc: New.
	* testsuite/25_algorithms/any_of/constexpr.cc: New.
	* testsuite/25_algorithms/binary_search/constexpr.cc: New.
	* testsuite/25_algorithms/copy/constexpr.cc: New.
	* testsuite/25_algorithms/copy_backward/constexpr.cc: New.
	* testsuite/25_algorithms/copy_if/constexpr.cc: New.
	* testsuite/25_algorithms/copy_n/constexpr.cc: New.
	* testsuite/25_algorithms/count/constexpr.cc: New.
	* testsuite/25_algorithms/count_if/constexpr.cc: New.
	* testsuite/25_algorithms/equal/constexpr.cc: New.
	* testsuite/25_algorithms/equal_range/constexpr.cc: New.
	* testsuite/25_algorithms/fill/constexpr.cc: New.
	* testsuite/25_algorithms/fill_n/constexpr.cc: New.
	* testsuite/25_algorithms/find/constexpr.cc: New.
	* testsuite/25_algorithms/find_end/constexpr.cc: New.
	* testsuite/25_algorithms/find_first_of/constexpr.cc: New.
	* testsuite/25_algorithms/find_if/constexpr.cc: New.
	* testsuite/25_algorithms/find_if_not/constexpr.cc: New.
	* testsuite/25_algorithms/for_each/constexpr.cc: New.
	* testsuite/25_algorithms/generate/constexpr.cc: New.
	* testsuite/25_algorithms/generate_n/constexpr.cc: New.
	* testsuite/25_algorithms/is_heap/constexpr.cc: New.
	* testsuite/25_algorithms/is_heap_until/constexpr.cc: New.
	* testsuite/25_algorithms/is_partitioned/constexpr.cc: New.
	* testsuite/25_algorithms/is_permutation/constexpr.cc: New.
	* testsuite/25_algorithms/is_sorted/constexpr.cc: New.
	* testsuite/25_algorithms/is_sorted_until/constexpr.cc: New.
	* testsuite/25_algorithms/lexicographical_compare/constexpr.cc: New.
	* testsuite/25_algorithms/lower_bound/constexpr.cc: New.
	* testsuite/25_algorithms/merge/constexpr.cc: New.
	* testsuite/25_algorithms/mismatch/constexpr.cc: New.
	* testsuite/25_algorithms/none_of/constexpr.cc: New.
	* testsuite/25_algorithms/partition_copy/constexpr.cc: New.
	* testsuite/25_algorithms/partition_point/constexpr.cc: New.
	* testsuite/25_algorithms/remove/constexpr.cc: New.
	* testsuite/25_algorithms/remove_copy/constexpr.cc: New.
	* testsuite/25_algorithms/remove_copy_if/constexpr.cc: New.
	* testsuite/25_algorithms/remove_if/constexpr.cc: New.
	* testsuite/25_algorithms/replace_copy/constexpr.cc: New.
	* testsuite/25_algorithms/replace_copy_if/constexpr.cc: New.
	* testsuite/25_algorithms/replace_if/constexpr.cc: New.
	* testsuite/25_algorithms/reverse_copy/constexpr.cc: New.
	* testsuite/25_algorithms/rotate_copy/constexpr.cc: New.
	* testsuite/25_algorithms/search/constexpr.cc: New.
	* testsuite/25_algorithms/search_n/constexpr.cc: New.
	* testsuite/25_algorithms/set_difference/constexpr.cc: New.
	* testsuite/25_algorithms/set_intersection/constexpr.cc: New.
	* testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: New.
	* testsuite/25_algorithms/set_union/constexpr.cc: New.
	* testsuite/25_algorithms/transform/constexpr.cc: New.
	* testsuite/25_algorithms/unique/constexpr.cc: New.
	* testsuite/25_algorithms/unique_copy/constexpr.cc: New.
	* testsuite/25_algorithms/upper_bound/constexpr.cc: New.

From-SVN: r273975
 2019-08-01 15:25:42 +00:00
Jonathan Wakely
0fd9e8482e PR libstdc++/90920 restore previous checks for empty ranges 
The change in r263433 broke the contract of the __rotate functions, by no
longer accepting empty ranges. That means that callers which inlined the
old version of std::rotate (without checks) that end up linking to a new
definition of std::__rotate (also without checks) could perform a divide
by zero and crash.

This restores the old contract of the __rotate overloads.

	PR libstdc++/90920 partially revert r263433
	* include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
	(rotate): Remove checks.
	* testsuite/25_algorithms/rotate/90920.cc: New test.

From-SVN: r272489
 2019-06-19 23:57:02 +01:00
Jonathan Wakely
ed920373a5 Implement new serial algorithms from Parallelism TS (P0024R2) 
These new (non-parallel) algorithms were added to C++17 along with the
parallel algorithms, but were missing from libstdc++.

	* include/bits/algorithmfwd.h: Change title of doc group.
	* include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
	P0024R2.
	* include/bits/stl_numeric.h: Define doc group and add algos to it.
	* include/std/numeric (__is_random_access_iter): New internal trait.
	(reduce, transform_reduce, exclusive_scan, inclusive_scan)
	(transform_exclusive_scan, transform_inclusive_scan): Likewise.
	* testsuite/25_algorithms/for_each/for_each_n.cc: New test.
	* testsuite/26_numerics/exclusive_scan/1.cc: New test.
	* testsuite/26_numerics/inclusive_scan/1.cc: New test.
	* testsuite/26_numerics/reduce/1.cc: New test.
	* testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
	* testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
	* testsuite/26_numerics/transform_reduce/1.cc: New test.
	* testsuite/util/testsuite_iterators.h (test_container::size()): New
	member function.

From-SVN: r272459
 2019-06-19 00:01:16 +01:00
Jonathan Wakely
95b3d0fda3 Fix incorrect __cpp_lib_parallel_algorithm macro definitions 
* include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
	* include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
	* include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
	* testsuite/25_algorithms/pstl/feature_test.cc: New test.

From-SVN: r272216
 2019-06-12 21:16:03 +01:00
Thomas Rodgers
f32ee8a25e Synchronize libstdc++ PSTL with upstream LLVM PSTL 
Rename PSTL macro's consistent with libstdc++ (and llvm upstream
	project) standards.
	* include/bits/c++config: Rename all macros of the form __PSTL* to
	_PSTL*.
	* include/std/algorithm: Likewise.
	* include/std/execution: Likewise.
	* include/std/numeric: Likewise.
	* include/std/memory: Likewise.
	* include/pstl/glue_memory_impl.h: Likewise.
	* include/pstl/numeric_impl.h: Likewise.
	* include/pstl/glue_memory_defs.h: Likewise.
	* include/pstl/execution_defs.h: Likewise.
	* include/pstl/utils.h: Likewise.
	* include/pstl/algorithm_fwd.h: Likewise.
	* include/pstl/unseq_backend_simd.h: Likewise.
	* include/pstl/glue_execution_defs.h: Likewise.
	* include/pstl/algorithm_impl.h: Likewise.
	* include/pstl/parallel_impl.h: Likewise.
	* include/pstl/memory_impl.h: Likewise.
	* include/pstl/glue_numeric_defs.h: Likewise.
	* include/pstl/parallel_backend_utils.h: Likewise.
	* include/pstl/glue_algorithm_defs.h: Likewise.
	* include/pstl/parallel_backend.h: Likewise.
	* include/pstl/glue_numeric_impl.h: Likewise.
	* include/pstl/parallel_backend_tbb.h: Likewise.
	* include/pstl/numeric_fwd.h: Likewise.
	* include/pstl/glue_algorithm_impl.h: Likewise.
	* include/pstl/execution_impl.h: Likewise.
	* include/pstl/pstl_config.h: Likewise.
	* testsuite/util/pstl/pstl_test_config.h: Likewise.
	* testsuite/util/pstl/test_utils.h: Likewise.
	* testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
	Likewise.
	* testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
	Likewise.
	* testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
	* testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
	* testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
	Likewise.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.

	Rename header guards to be consistent with upstream project's
	conventions.
	* include/pstl/glue_memory_impl.h: Rename all macros of the form
	_PSTL_(.*)_H to _PSTL_\U\1_H.
	* include/pstl/numeric_impl.h: Likewise.
	* include/pstl/glue_memory_defs.h: Likewise.
	* include/pstl/execution_defs.h: Likewise.
	* include/pstl/utils.h: Likewise.
	* include/pstl/algorithm_fwd.h: Likewise.
	* include/pstl/unseq_backend_simd.h: Likewise.
	* include/pstl/glue_execution_defs.h: Likewise.
	* include/pstl/algorithm_impl.h: Likewise.
	* include/pstl/parallel_impl.h: Likewise.
	* include/pstl/memory_impl.h: Likewise.
	* include/pstl/glue_numeric_defs.h: Likewise.
	* include/pstl/parallel_backend_utils.h: Likewise.
	* include/pstl/glue_algorithm_defs.h: Likewise.
	* include/pstl/parallel_backend.h: Likewise.
	* include/pstl/glue_numeric_impl.h: Likewise.
	* include/pstl/parallel_backend_tbb.h: Likewise.
	* include/pstl/numeric_fwd.h: Likewise.
	* include/pstl/glue_algorithm_impl.h: Likewise.
	* include/pstl/execution_impl.h: Likewise.
	* include/pstl/pstl_config.h: Likewise.
	* testsuite/util/pstl/pstl_test_config.h: Likewise.

	Synchronize libstdc++ parallel algorithms with upstream
	project.
	* include/pstl/algorithm_fwd.h: Synchronize with
	upstream PSTL project.
	* include/pstl/algorithm_impl.h: Likewise.
	* include/pstl/execution_defs.h: Likewise.
	* include/pstl/execution_impl.h: Likewise.
	* include/pstl/glue_algorithm_impl.h: Likewise.
	* include/pstl/glue_execution_defs.h: Likewise.
	* include/pstl/numeric_fwd.h: Likewise.
	* include/pstl/numeric_impl.h: Likewise.
	* include/pstl/parallel_backend.h: Likewise.
	* include/pstl/pstl_config.h: Likewise.
	* include/pstl/unseq_backend_simd.h: Likewise.
	* include/pstl/parallel_backend_serial.h: New file.
	* include/Makefile.am (pstl_headers): Add
	parallel_backend_serial.h.
	* include/Makefile.in: Regenerate.

	Clean up non-conforming names
	* include/pstl/algorithm_impl.h (__parallel_set_union_op):
	Uglfiy copy_range1 and copy_range2
	(__pattern_walk2_n): Rename local n to __n
	* include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
	Rename parameter _T to _Tp.

	Integrate non-TBB serial backend support
	* include/bits/c++config: Adjust TBB detection logic to select serial
	PSTL backend if no TBB present.
	* testsuite/utils/pstl/test_utils.h: Remove check for
	_PSTL_USE_PAR_POLICIES

From-SVN: r272056
 2019-06-07 22:01:16 +00:00
Jonathan Wakely
544be2beb1 Remove Profile Mode, deprecated since GCC 7.1 
The Profile Mode extension is not used by anybody, nor maintained by
anybody. The containers do not support the full API specified in recent
standards, and so enabling Profile Mode is not source compatible with
much modern C++ code. The heuristics that would check the profile
information and make useful suggestions never materialized, so it isn't
useful.

It should be removed.

	Remove Profile Mode, deprecated since 7.1.0
	* doc/Makefile.am: Remove XML file for profile mode docs.
	* doc/Makefile.in: Regenerate.
	* doc/xml/authors.xml: Remove authors of profile mode docs.
	* doc/xml/manual/appendix_contributing.xml: Remove mention of profile
	mode.
	* doc/xml/manual/debug.xml: Likewise.
	* doc/xml/manual/evolution.xml: Document removal of profile mode.
	* doc/xml/manual/profile_mode.xml: Remove profile mode docs.
	* doc/xml/manual/spine.xml: Remove profile mode author credit.
	* doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
	directive.
	* doc/xml/manual/using.xml: Remove docs for profile mode headers and
	macro.
	* doc/html/*: Regenerate.
	* include/Makefile.am: Remove profile mode headers.
	* include/Makefile.in: Regenerate.
	* include/bits/c++config (std::__profile): Remove namespace.
	[_GLIBCXX_PROFILE]: Remove checks for macro.
	* include/profile/array: Remove.
	* include/profile/base.h: Remove.
	* include/profile/bitset: Remove.
	* include/profile/deque: Remove.
	* include/profile/forward_list: Remove.
	* include/profile/impl/profiler.h: Remove.
	* include/profile/impl/profiler_algos.h: Remove.
	* include/profile/impl/profiler_container_size.h: Remove.
	* include/profile/impl/profiler_hash_func.h: Remove.
	* include/profile/impl/profiler_hashtable_size.h: Remove.
	* include/profile/impl/profiler_list_to_slist.h: Remove.
	* include/profile/impl/profiler_list_to_vector.h: Remove.
	* include/profile/impl/profiler_map_to_unordered_map.h: Remove.
	* include/profile/impl/profiler_node.h: Remove.
	* include/profile/impl/profiler_state.h: Remove.
	* include/profile/impl/profiler_trace.h: Remove.
	* include/profile/impl/profiler_vector_size.h: Remove.
	* include/profile/impl/profiler_vector_to_list.h: Remove.
	* include/profile/iterator_tracker.h: Remove.
	* include/profile/list: Remove.
	* include/profile/map: Remove.
	* include/profile/map.h: Remove.
	* include/profile/multimap.h: Remove.
	* include/profile/multiset.h: Remove.
	* include/profile/ordered_base.h: Remove.
	* include/profile/set: Remove.
	* include/profile/set.h: Remove.
	* include/profile/unordered_base.h: Remove.
	* include/profile/unordered_map: Remove.
	* include/profile/unordered_set: Remove.
	* include/profile/vector: Remove.
	* scripts/run_doxygen: Do not process profile mode headers.
	* testsuite/23_containers/array/element_access/60497.cc: Don't use
	profile mode type.
	* testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
	Remove dg-skip-if for profile mode.
	* testsuite/23_containers/forward_list/capacity/1.cc: Remove
	preprocessor check for profile mode.
	* testsuite/23_containers/list/capacity/29134.cc: Likewise.
	* testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
	for profile mode.
	* testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
	Likewise.
	* testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
	* testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
	* testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
	* testsuite/23_containers/set/modifiers/extract.cc: Likewise.
	* testsuite/23_containers/unordered_map/modifiers/extract.cc:
	Likewise.
	* testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
	Likewise.
	* testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
	Likewise.
	* testsuite/23_containers/unordered_set/modifiers/extract.cc:
	Likewise.
	* testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
	preprocessor check for profile mode.
	* testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
	Likewise.
	* testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
	Remove dg-skip-if for profile mode.
	* testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
	* testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
	* testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
	* testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
	* testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
	* testsuite/Makefile.am: Remove profile_flags variable and
	* testsuite/Makefile.am: Remove profile_flags variable and
	check-profile target.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/ext/profile/all.cc: Remove.
	* testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
	* testsuite/ext/profile/profiler_algos.cc: Remove.
	* testsuite/ext/profile/replace_new.cc: Remove.
	* testsuite/ext/throw_allocator/deallocate_global.cc: Remove
	preprocessor check for profile mode.
	* testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
	* testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
	(check_v3_target_normal_mode): Do not check for profile mode macro.
	* testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
	profile mode.
	* testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
	* testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.

From-SVN: r271120
 2019-05-13 11:50:21 +01:00
Jonathan Wakely
846541dd15 PR libstdc++/87982 Fix generate_n and fill_n use of _Size parameter 
The standard only requires that _Size can be converted to an integral
type, not that it can be used for arithmetic. Add a new set of
__size_to_integer helper functions to do the conversion (which will be
ambiguous if there is no one conversion that is better than any others).

Also add tests for DR 426 which requires these algorithms and search_n
to handle negative values of n.

	PR libstdc++/87982
	* include/bits/stl_algo.h (generate_n): Convert _Size parameter to
	an integral type.
	* include/bits/stl_algobase.h (__size_to_integer): New overloaded
	functions to convert a value to an integral type.
	(__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
	(fill_n): Convert _Size parameter to an integral type.
	* testsuite/25_algorithms/fill_n/dr426.cc: New test.
	* testsuite/25_algorithms/generate_n/87982.cc: New test.
	* testsuite/25_algorithms/generate_n/dr426.cc: New test.

From-SVN: r270646
 2019-04-29 13:12:43 +01:00
Thomas Rodgers
061f457868 Integrate C++17 parallel algorithms 
This is the Intel implementation of the C++17 parallel
algorithms, which has been donated to both GCC and LLVM. The upstream
project is at -

	https://reviews.llvm.org/source/pstl/

The new files in the include/pstl sub-directory are covered by the
LICENSE.txt in that sub-directory, as are the tests in
testsuite/**/pstl/*

	* include/Makefile.am (std_header): Add ${std_srcdir}/execution.
	(pstl_srcdir, pstl_builddir, pstl_headers): New variables.
	(allstamped): Add stamp-pstl.
	(install-headers): Add ptsl_builddir.
	* include/Makefile.in: Regenerate.
	* include/bits/c++config: Add pstl configuration.
	* include/pstl/LICENSE.txt: New file.
	* include/pstl/algorithm_fwd.h: New file.
	* include/pstl/algorithm_impl.h: New file.
	* include/pstl/execution_defs.h: New file.
	* include/pstl/execution_impl.h: New file.
	* include/pstl/glue_algorithm_defs.h: New file.
	* include/pstl/glue_algorithm_impl.h: New file.
	* include/pstl/glue_execution_defs.h: New file.
	* include/pstl/glue_memory_defs.h: New file.
	* include/pstl/glue_memory_impl.h: New file.
	* include/pstl/glue_numeric_defs.h: New file.
	* include/pstl/glue_numeric_impl.h: New file.
	* include/pstl/memory_impl.h: New file.
	* include/pstl/numeric_fwd.h: New file.
	* include/pstl/numeric_impl.h: New file.
	* include/pstl/parallel_backend.h: New file.
	* include/pstl/parallel_backend_tbb.h: New file.
	* include/pstl/parallel_backend_utils.h: New file.
	* include/pstl/parallel_impl.h: New file.
	* include/pstl/pstl_config.h: New file.
	* include/pstl/unseq_backend_simd.h: New file.
	* include/pstl/utils.h: New file.
	* include/std/algorithm: Include parallel algorithm implementations.
	* include/std/execution: New file.
	* include/std/memory: Include parallel algorithm implementations.
	* include/std/numeric: Include parallel algorithm implementations.
	* include/std/version: Add parallel algorithms feature test macro.
	* testsuite/util/pstl/pstl_test_config.h: New file.
	* testsuite/util/pstl/test_utils.h: New file.
	* testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
	* testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
	* testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
	* testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
	* testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
	* testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
	* testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
	* testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
	* testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
	* testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
	* testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
	* testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
	* testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
	* testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
	* testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
	* testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
	* testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
	* testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
	* testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
	* testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
	* testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
	* testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
	* testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
	* testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
	* testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
	* testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
	* testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
	* testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
	* testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
	* testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.

From-SVN: r269863
 2019-03-21 23:48:49 +00:00
Jakub Jelinek
a554497024 Update copyright years. 
From-SVN: r267494
 2019-01-01 13:31:55 +01:00
Sandra Loosemore
6cec3c81a7 10.cc: Add dg-require-fileio. 
2018-08-31  Sandra Loosemore  <sandra@codesourcery.com>

	libstdc++-v3/

	* testsuite/21_strings/basic_string/inserters_extractors/wchar_t/10.cc:
	Add dg-require-fileio.
	* testsuite/21_strings/basic_string/inserters_extractors/wchar_t/11.cc:
	Likewise.
	* testsuite/21_strings/basic_string/inserters_extractors/wchar_t/5.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc:
	Likewise.
	* testsuite/25_algorithms/copy/streambuf_iterators/wchar_t/4.cc:
	Likewise.
	* testsuite/25_algorithms/find/istreambuf_iterators/wchar_t/2.cc:
	Likewise.
	* testsuite/27_io/basic_filebuf/close/wchar_t/12790-1.cc: Likewise.
	* testsuite/27_io/basic_filebuf/close/wchar_t/12790-2.cc: Likewise.
	* testsuite/27_io/basic_filebuf/close/wchar_t/12790-3.cc: Likewise.
	* testsuite/27_io/basic_filebuf/close/wchar_t/12790-4.cc: Likewise.
	* testsuite/27_io/basic_filebuf/seekoff/wchar_t/11543.cc: Likewise.
	* testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-1.cc:
	Likewise.
	* testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-2.cc:
	Likewise.
	* testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-3.cc:
	Likewise.
	* testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-4.cc:
	Likewise.
	* testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-1.cc:
	Likewise.
	* testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-2.cc:
	Likewise.
	* testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-4.cc:
	Likewise.
	* testsuite/27_io/basic_filebuf/underflow/wchar_t/2.cc: Likewise.
	* testsuite/27_io/basic_filebuf/underflow/wchar_t/3.cc: Likewise.
	* testsuite/27_io/basic_ifstream/cons/wchar_t/1.cc: Likewise.
	* testsuite/27_io/basic_ifstream/open/wchar_t/1.cc: Likewise.
	* testsuite/27_io/basic_istream/extractors_character/wchar_t/4.cc:
	Likewise.
	* testsuite/27_io/basic_istream/extractors_other/wchar_t/2.cc:
	Likewise.
	* testsuite/27_io/basic_istream/get/wchar_t/2.cc: Likewise.
	* testsuite/27_io/basic_istream/getline/wchar_t/5.cc: Likewise.
	* testsuite/27_io/basic_istream/ignore/wchar_t/2.cc: Likewise.
	* testsuite/27_io/basic_istream/ignore/wchar_t/3.cc: Likewise.
	* testsuite/27_io/basic_istream/seekg/wchar_t/sstream.cc: Likewise.
	* testsuite/27_io/basic_istream/tellg/wchar_t/sstream.cc: Likewise.
	* testsuite/27_io/basic_ofstream/cons/wchar_t/1.cc: Likewise.
	* testsuite/27_io/basic_ofstream/open/wchar_t/1.cc: Likewise.
	* testsuite/27_io/basic_ostream/inserters_other/wchar_t/1.cc:
	Likewise.
	* testsuite/27_io/objects/wchar_t/10.cc: Likewise.
	* testsuite/27_io/objects/wchar_t/12048-1.cc: Likewise.
	* testsuite/27_io/objects/wchar_t/12048-2.cc: Likewise.
	* testsuite/27_io/objects/wchar_t/12048-3.cc: Likewise.
	* testsuite/27_io/objects/wchar_t/12048-4.cc: Likewise.
	* testsuite/27_io/objects/wchar_t/12048-5.cc: Likewise.
	* testsuite/experimental/string_view/inserters/wchar_t/2.cc:
	Likewise.
	* testsuite/ext/stdio_sync_filebuf/wchar_t/1.cc: Likewise.

From-SVN: r264022
 2018-08-31 15:09:47 -04:00
Jonathan Wakely
c07870270a Fix C++98 tests to not use C++11 features. 
* testsuite/25_algorithms/partial_sort_copy/debug/irreflexive_neg.cc:
	Fix C++98 test to not use C++11 features.
	* testsuite/25_algorithms/fill_n/2.cc: Likewise.

From-SVN: r263815
 2018-08-23 16:10:45 +01:00
François Dumont
6672e849b8 86658.cc: Use dg-options to define _GLIBCXX_DEBUG. 
2018-08-18  François Dumont  <fdumont@gcc.gnu.org>

	* testsuite/25_algorithms/copy/86658.cc: Use dg-options to define
	_GLIBCXX_DEBUG.

From-SVN: r263647
 2018-08-18 20:01:14 +00:00