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From: Jonathan Wakely <jwakely@redhat.com>
To: libstdc++@gcc.gnu.org,
	gcc-patches@gcc.gnu.org
Subject: [PATCH 07/13] libstdc++: Remove dg-options "-std=gnu++2a" from constrained algo tests
Date: Mon, 11 Sep 2023 17:16:38 +0100
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The testsuite will automatically select C++20 for these tests now, and
removing the hardcoded -std option allows them to be tested for C++23
and C++26 as well.

libstdc++-v3/ChangeLog:

	* testsuite/20_util/function_objects/range.cmp/equal_to.cc:
	Remove dg-options.
	* testsuite/20_util/function_objects/range.cmp/greater.cc:
	Likewise.
	* testsuite/20_util/function_objects/range.cmp/greater_equal.cc:
	Likewise.
	* testsuite/20_util/function_objects/range.cmp/less.cc:
	Likewise.
	* testsuite/20_util/function_objects/range.cmp/less_equal.cc:
	Likewise.
	* testsuite/20_util/function_objects/range.cmp/lwg3530.cc:
	Likewise.
	* testsuite/20_util/function_objects/range.cmp/not_equal_to.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/construct_at/1.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/construct_at/95788.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/destroy/constrained.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/uninitialized_copy/constrained.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/uninitialized_default_construct/constrained.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/uninitialized_fill/constrained.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/uninitialized_move/constrained.cc:
	Likewise.
	* testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/adjacent_find/constexpr.cc: Likewise.
	* testsuite/25_algorithms/adjacent_find/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/all_of/constexpr.cc: Likewise.
	* testsuite/25_algorithms/all_of/constrained.cc: Likewise.
	* testsuite/25_algorithms/any_of/constexpr.cc: Likewise.
	* testsuite/25_algorithms/any_of/constrained.cc: Likewise.
	* testsuite/25_algorithms/binary_search/constexpr.cc: Likewise.
	* testsuite/25_algorithms/binary_search/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/clamp/constrained.cc: Likewise.
	* testsuite/25_algorithms/constexpr_macro.cc: Likewise.
	* testsuite/25_algorithms/copy/95578.cc: Likewise.
	* testsuite/25_algorithms/copy/constexpr.cc: Likewise.
	* testsuite/25_algorithms/copy/constrained.cc: Likewise.
	* testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Likewise.
	* testsuite/25_algorithms/copy_backward/95578.cc: Likewise.
	* testsuite/25_algorithms/copy_backward/constexpr.cc: Likewise.
	* testsuite/25_algorithms/copy_backward/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc:
	Likewise.
	* testsuite/25_algorithms/copy_if/constexpr.cc: Likewise.
	* testsuite/25_algorithms/copy_if/constrained.cc: Likewise.
	* testsuite/25_algorithms/copy_n/constexpr.cc: Likewise.
	* testsuite/25_algorithms/copy_n/constrained.cc: Likewise.
	* testsuite/25_algorithms/count/constexpr.cc: Likewise.
	* testsuite/25_algorithms/count/constrained.cc: Likewise.
	* testsuite/25_algorithms/count_if/constexpr.cc: Likewise.
	* testsuite/25_algorithms/count_if/constrained.cc: Likewise.
	* testsuite/25_algorithms/cpp_lib_constexpr.cc: Likewise.
	* testsuite/25_algorithms/equal/95578.cc: Likewise.
	* testsuite/25_algorithms/equal/constexpr.cc: Likewise.
	* testsuite/25_algorithms/equal/constexpr_neg.cc: Likewise.
	* testsuite/25_algorithms/equal/constrained.cc: Likewise.
	* testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
	Likewise.
	* testsuite/25_algorithms/equal_range/constexpr.cc: Likewise.
	* testsuite/25_algorithms/equal_range/constrained.cc: Likewise.
	* testsuite/25_algorithms/fill/94017.cc: Likewise.
	* testsuite/25_algorithms/fill/constexpr.cc: Likewise.
	* testsuite/25_algorithms/fill/constrained.cc: Likewise.
	* testsuite/25_algorithms/fill_n/94017.cc: Likewise.
	* testsuite/25_algorithms/fill_n/constexpr.cc: Likewise.
	* testsuite/25_algorithms/fill_n/constrained.cc: Likewise.
	* testsuite/25_algorithms/find/constexpr.cc: Likewise.
	* testsuite/25_algorithms/find/constrained.cc: Likewise.
	* testsuite/25_algorithms/find_end/constexpr.cc: Likewise.
	* testsuite/25_algorithms/find_end/constrained.cc: Likewise.
	* testsuite/25_algorithms/find_first_of/constexpr.cc: Likewise.
	* testsuite/25_algorithms/find_first_of/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/find_if/constexpr.cc: Likewise.
	* testsuite/25_algorithms/find_if/constrained.cc: Likewise.
	* testsuite/25_algorithms/find_if_not/constexpr.cc: Likewise.
	* testsuite/25_algorithms/find_if_not/constrained.cc: Likewise.
	* testsuite/25_algorithms/for_each/constexpr.cc: Likewise.
	* testsuite/25_algorithms/for_each/constrained.cc: Likewise.
	* testsuite/25_algorithms/generate/constexpr.cc: Likewise.
	* testsuite/25_algorithms/generate/constrained.cc: Likewise.
	* testsuite/25_algorithms/generate_n/constexpr.cc: Likewise.
	* testsuite/25_algorithms/generate_n/constrained.cc: Likewise.
	* testsuite/25_algorithms/heap/constrained.cc: Likewise.
	* testsuite/25_algorithms/includes/constrained.cc: Likewise.
	* testsuite/25_algorithms/inplace_merge/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/is_heap/constexpr.cc: Likewise.
	* testsuite/25_algorithms/is_heap_until/constexpr.cc: Likewise.
	* testsuite/25_algorithms/is_partitioned/constexpr.cc: Likewise.
	* testsuite/25_algorithms/is_partitioned/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/is_permutation/constexpr.cc: Likewise.
	* testsuite/25_algorithms/is_permutation/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
	* testsuite/25_algorithms/is_sorted/constrained.cc: Likewise.
	* testsuite/25_algorithms/is_sorted_until/constexpr.cc:
	Likewise.
	* testsuite/25_algorithms/is_sorted_until/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/iter_swap/constexpr.cc: Likewise.
	* testsuite/25_algorithms/lexicographical_compare/93972.cc:
	Likewise.
	* testsuite/25_algorithms/lexicographical_compare/95578.cc:
	Likewise.
	* testsuite/25_algorithms/lexicographical_compare/constexpr.cc:
	Likewise.
	* testsuite/25_algorithms/lexicographical_compare/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/lexicographical_compare_three_way/1.cc:
	Likewise.
	* testsuite/25_algorithms/lexicographical_compare_three_way/constexpr.cc:
	Likewise.
	* testsuite/25_algorithms/lower_bound/constexpr.cc: Likewise.
	* testsuite/25_algorithms/lower_bound/constrained.cc: Likewise.
	* testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc:
	Likewise.
	* testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc:
	Likewise.
	* testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc:
	Likewise.
	* testsuite/25_algorithms/make_heap/constexpr.cc: Likewise.
	* testsuite/25_algorithms/max/constrained.cc: Likewise.
	* testsuite/25_algorithms/max_element/constrained.cc: Likewise.
	* testsuite/25_algorithms/merge/constexpr.cc: Likewise.
	* testsuite/25_algorithms/merge/constrained.cc: Likewise.
	* testsuite/25_algorithms/min/constrained.cc: Likewise.
	* testsuite/25_algorithms/min_element/constrained.cc: Likewise.
	* testsuite/25_algorithms/minmax/constrained.cc: Likewise.
	* testsuite/25_algorithms/minmax_element/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/mismatch/constexpr.cc: Likewise.
	* testsuite/25_algorithms/mismatch/constrained.cc: Likewise.
	* testsuite/25_algorithms/move/93872.cc: Likewise.
	* testsuite/25_algorithms/move/95578.cc: Likewise.
	* testsuite/25_algorithms/move/constexpr.cc: Likewise.
	* testsuite/25_algorithms/move/constrained.cc: Likewise.
	* testsuite/25_algorithms/move_backward/93872.cc: Likewise.
	* testsuite/25_algorithms/move_backward/95578.cc: Likewise.
	* testsuite/25_algorithms/move_backward/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/next_permutation/constexpr.cc:
	Likewise.
	* testsuite/25_algorithms/next_permutation/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/none_of/constexpr.cc: Likewise.
	* testsuite/25_algorithms/none_of/constrained.cc: Likewise.
	* testsuite/25_algorithms/nth_element/constexpr.cc: Likewise.
	* testsuite/25_algorithms/nth_element/constrained.cc: Likewise.
	* testsuite/25_algorithms/partial_sort/constexpr.cc: Likewise.
	* testsuite/25_algorithms/partial_sort/constrained.cc: Likewise.
	* testsuite/25_algorithms/partial_sort_copy/constexpr.cc:
	Likewise.
	* testsuite/25_algorithms/partial_sort_copy/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/partition/constexpr.cc: Likewise.
	* testsuite/25_algorithms/partition/constrained.cc: Likewise.
	* testsuite/25_algorithms/partition_copy/constexpr.cc: Likewise.
	* testsuite/25_algorithms/partition_copy/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/partition_point/constexpr.cc:
	Likewise.
	* testsuite/25_algorithms/partition_point/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/pop_heap/constexpr.cc: Likewise.
	* testsuite/25_algorithms/prev_permutation/constexpr.cc:
	Likewise.
	* testsuite/25_algorithms/prev_permutation/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/push_heap/constexpr.cc: Likewise.
	* testsuite/25_algorithms/remove/constexpr.cc: Likewise.
	* testsuite/25_algorithms/remove/constrained.cc: Likewise.
	* testsuite/25_algorithms/remove_copy/constexpr.cc: Likewise.
	* testsuite/25_algorithms/remove_copy/constrained.cc: Likewise.
	* testsuite/25_algorithms/remove_copy_if/constexpr.cc: Likewise.
	* testsuite/25_algorithms/remove_copy_if/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/remove_if/constexpr.cc: Likewise.
	* testsuite/25_algorithms/remove_if/constrained.cc: Likewise.
	* testsuite/25_algorithms/replace/constrained.cc: Likewise.
	* testsuite/25_algorithms/replace_copy/constexpr.cc: Likewise.
	* testsuite/25_algorithms/replace_copy/constrained.cc: Likewise.
	* testsuite/25_algorithms/replace_copy_if/constexpr.cc:
	Likewise.
	* testsuite/25_algorithms/replace_copy_if/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/replace_if/constexpr.cc: Likewise.
	* testsuite/25_algorithms/replace_if/constrained.cc: Likewise.
	* testsuite/25_algorithms/reverse/constexpr.cc: Likewise.
	* testsuite/25_algorithms/reverse/constrained.cc: Likewise.
	* testsuite/25_algorithms/reverse_copy/constexpr.cc: Likewise.
	* testsuite/25_algorithms/reverse_copy/constrained.cc: Likewise.
	* testsuite/25_algorithms/rotate/constexpr.cc: Likewise.
	* testsuite/25_algorithms/rotate/constrained.cc: Likewise.
	* testsuite/25_algorithms/rotate_copy/constexpr.cc: Likewise.
	* testsuite/25_algorithms/rotate_copy/constrained.cc: Likewise.
	* testsuite/25_algorithms/sample/constrained.cc: Likewise.
	* testsuite/25_algorithms/search/constexpr.cc: Likewise.
	* testsuite/25_algorithms/search/constrained.cc: Likewise.
	* testsuite/25_algorithms/search_n/97828.cc: Likewise.
	* testsuite/25_algorithms/search_n/constexpr.cc: Likewise.
	* testsuite/25_algorithms/search_n/constrained.cc: Likewise.
	* testsuite/25_algorithms/set_difference/constexpr.cc: Likewise.
	* testsuite/25_algorithms/set_difference/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/set_intersection/constexpr.cc:
	Likewise.
	* testsuite/25_algorithms/set_intersection/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/set_symmetric_difference/constexpr.cc:
	Likewise.
	* testsuite/25_algorithms/set_symmetric_difference/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/set_union/constexpr.cc: Likewise.
	* testsuite/25_algorithms/set_union/constrained.cc: Likewise.
	* testsuite/25_algorithms/shift_left/1.cc: Likewise.
	* testsuite/25_algorithms/shift_right/1.cc: Likewise.
	* testsuite/25_algorithms/shuffle/constrained.cc: Likewise.
	* testsuite/25_algorithms/sort/constexpr.cc: Likewise.
	* testsuite/25_algorithms/sort/constrained.cc: Likewise.
	* testsuite/25_algorithms/sort_heap/constexpr.cc: Likewise.
	* testsuite/25_algorithms/stable_partition/constrained.cc:
	Likewise.
	* testsuite/25_algorithms/stable_sort/constrained.cc: Likewise.
	* testsuite/25_algorithms/swap/constexpr.cc: Likewise.
	* testsuite/25_algorithms/swap_ranges/constexpr.cc: Likewise.
	* testsuite/25_algorithms/swap_ranges/constrained.cc: Likewise.
	* testsuite/25_algorithms/transform/constexpr.cc: Likewise.
	* testsuite/25_algorithms/transform/constrained.cc: Likewise.
	* testsuite/25_algorithms/unique/constexpr.cc: Likewise.
	* testsuite/25_algorithms/unique/constrained.cc: Likewise.
	* testsuite/25_algorithms/unique_copy/constexpr.cc: Likewise.
	* testsuite/25_algorithms/unique_copy/constrained.cc: Likewise.
	* testsuite/25_algorithms/upper_bound/constexpr.cc: Likewise.
	* testsuite/25_algorithms/upper_bound/constrained.cc: Likewise.
	* testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc:
	Likewise.
	* testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc:
	Likewise.
	* testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc:
	Likewise.
---
 .../testsuite/20_util/function_objects/range.cmp/equal_to.cc   | 3 +--
 .../testsuite/20_util/function_objects/range.cmp/greater.cc    | 3 +--
 .../20_util/function_objects/range.cmp/greater_equal.cc        | 3 +--
 .../testsuite/20_util/function_objects/range.cmp/less.cc       | 3 +--
 .../testsuite/20_util/function_objects/range.cmp/less_equal.cc | 3 +--
 .../testsuite/20_util/function_objects/range.cmp/lwg3530.cc    | 1 -
 .../20_util/function_objects/range.cmp/not_equal_to.cc         | 3 +--
 .../testsuite/20_util/specialized_algorithms/construct_at/1.cc | 3 +--
 .../20_util/specialized_algorithms/construct_at/92878_92947.cc | 3 +--
 .../20_util/specialized_algorithms/construct_at/95788.cc       | 3 +--
 .../20_util/specialized_algorithms/destroy/constrained.cc      | 3 +--
 .../specialized_algorithms/uninitialized_copy/constrained.cc   | 3 +--
 .../uninitialized_default_construct/constrained.cc             | 3 +--
 .../20_util/specialized_algorithms/uninitialized_fill/94017.cc | 3 +--
 .../specialized_algorithms/uninitialized_fill/constrained.cc   | 3 +--
 .../specialized_algorithms/uninitialized_fill_n/94017.cc       | 3 +--
 .../specialized_algorithms/uninitialized_move/constrained.cc   | 3 +--
 .../uninitialized_value_construct/constrained.cc               | 3 +--
 .../testsuite/25_algorithms/adjacent_find/constexpr.cc         | 3 +--
 .../testsuite/25_algorithms/adjacent_find/constrained.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/all_of/constexpr.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/all_of/constrained.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/any_of/constexpr.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/any_of/constrained.cc     | 3 +--
 .../testsuite/25_algorithms/binary_search/constexpr.cc         | 3 +--
 .../testsuite/25_algorithms/binary_search/constrained.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/clamp/constrained.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/constexpr_macro.cc        | 3 +--
 libstdc++-v3/testsuite/25_algorithms/copy/95578.cc             | 3 +--
 libstdc++-v3/testsuite/25_algorithms/copy/constexpr.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/copy/constrained.cc       | 3 +--
 .../testsuite/25_algorithms/copy/debug/constexpr_neg.cc        | 3 +--
 libstdc++-v3/testsuite/25_algorithms/copy_backward/95578.cc    | 3 +--
 .../testsuite/25_algorithms/copy_backward/constexpr.cc         | 3 +--
 .../testsuite/25_algorithms/copy_backward/constrained.cc       | 3 +--
 .../25_algorithms/copy_backward/debug/constexpr_neg.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/copy_if/constexpr.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/copy_if/constrained.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/copy_n/constexpr.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/copy_n/constrained.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/count/constexpr.cc        | 3 +--
 libstdc++-v3/testsuite/25_algorithms/count/constrained.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/count_if/constexpr.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/count_if/constrained.cc   | 3 +--
 libstdc++-v3/testsuite/25_algorithms/cpp_lib_constexpr.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/equal/95578.cc            | 3 +--
 libstdc++-v3/testsuite/25_algorithms/equal/constexpr.cc        | 3 +--
 libstdc++-v3/testsuite/25_algorithms/equal/constexpr_neg.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/equal/constrained.cc      | 3 +--
 .../testsuite/25_algorithms/equal/debug/constexpr_neg.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/equal_range/constexpr.cc  | 3 +--
 .../testsuite/25_algorithms/equal_range/constrained.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/fill/94017.cc             | 3 +--
 libstdc++-v3/testsuite/25_algorithms/fill/constexpr.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/fill/constrained.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/fill_n/94017.cc           | 3 +--
 libstdc++-v3/testsuite/25_algorithms/fill_n/constexpr.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/fill_n/constrained.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/find/constexpr.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/find/constrained.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/find_end/constexpr.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/find_end/constrained.cc   | 3 +--
 .../testsuite/25_algorithms/find_first_of/constexpr.cc         | 3 +--
 .../testsuite/25_algorithms/find_first_of/constrained.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/find_if/constexpr.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/find_if/constrained.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/find_if_not/constexpr.cc  | 3 +--
 .../testsuite/25_algorithms/find_if_not/constrained.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/for_each/constexpr.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/for_each/constrained.cc   | 3 +--
 libstdc++-v3/testsuite/25_algorithms/generate/constexpr.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/generate/constrained.cc   | 3 +--
 libstdc++-v3/testsuite/25_algorithms/generate_n/constexpr.cc   | 3 +--
 libstdc++-v3/testsuite/25_algorithms/generate_n/constrained.cc | 3 +--
 libstdc++-v3/testsuite/25_algorithms/heap/constrained.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/includes/constrained.cc   | 3 +--
 .../testsuite/25_algorithms/inplace_merge/constrained.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/is_heap/constexpr.cc      | 3 +--
 .../testsuite/25_algorithms/is_heap_until/constexpr.cc         | 3 +--
 .../testsuite/25_algorithms/is_partitioned/constexpr.cc        | 3 +--
 .../testsuite/25_algorithms/is_partitioned/constrained.cc      | 3 +--
 .../testsuite/25_algorithms/is_permutation/constexpr.cc        | 3 +--
 .../testsuite/25_algorithms/is_permutation/constrained.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/is_sorted/constexpr.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/is_sorted/constrained.cc  | 3 +--
 .../testsuite/25_algorithms/is_sorted_until/constexpr.cc       | 3 +--
 .../testsuite/25_algorithms/is_sorted_until/constrained.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/iter_swap/constexpr.cc    | 3 +--
 .../testsuite/25_algorithms/lexicographical_compare/93972.cc   | 3 +--
 .../testsuite/25_algorithms/lexicographical_compare/95578.cc   | 3 +--
 .../25_algorithms/lexicographical_compare/constexpr.cc         | 3 +--
 .../25_algorithms/lexicographical_compare/constrained.cc       | 3 +--
 .../25_algorithms/lexicographical_compare_three_way/1.cc       | 3 +--
 .../lexicographical_compare_three_way/constexpr.cc             | 3 +--
 libstdc++-v3/testsuite/25_algorithms/lower_bound/constexpr.cc  | 3 +--
 .../testsuite/25_algorithms/lower_bound/constrained.cc         | 3 +--
 .../lower_bound/debug/constexpr_partitioned_neg.cc             | 3 +--
 .../lower_bound/debug/constexpr_partitioned_pred_neg.cc        | 3 +--
 .../lower_bound/debug/constexpr_valid_range_neg.cc             | 3 +--
 libstdc++-v3/testsuite/25_algorithms/make_heap/constexpr.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/max/constrained.cc        | 3 +--
 .../testsuite/25_algorithms/max_element/constrained.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/merge/constexpr.cc        | 3 +--
 libstdc++-v3/testsuite/25_algorithms/merge/constrained.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/min/constrained.cc        | 3 +--
 .../testsuite/25_algorithms/min_element/constrained.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/minmax/constrained.cc     | 3 +--
 .../testsuite/25_algorithms/minmax_element/constrained.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/mismatch/constexpr.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/mismatch/constrained.cc   | 3 +--
 libstdc++-v3/testsuite/25_algorithms/move/93872.cc             | 3 +--
 libstdc++-v3/testsuite/25_algorithms/move/95578.cc             | 3 +--
 libstdc++-v3/testsuite/25_algorithms/move/constexpr.cc         | 1 -
 libstdc++-v3/testsuite/25_algorithms/move/constrained.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/move_backward/93872.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/move_backward/95578.cc    | 3 +--
 .../testsuite/25_algorithms/move_backward/constrained.cc       | 3 +--
 .../testsuite/25_algorithms/next_permutation/constexpr.cc      | 3 +--
 .../testsuite/25_algorithms/next_permutation/constrained.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/none_of/constexpr.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/none_of/constrained.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/nth_element/constexpr.cc  | 3 +--
 .../testsuite/25_algorithms/nth_element/constrained.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/partial_sort/constexpr.cc | 3 +--
 .../testsuite/25_algorithms/partial_sort/constrained.cc        | 3 +--
 .../testsuite/25_algorithms/partial_sort_copy/constexpr.cc     | 3 +--
 .../testsuite/25_algorithms/partial_sort_copy/constrained.cc   | 3 +--
 libstdc++-v3/testsuite/25_algorithms/partition/constexpr.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/partition/constrained.cc  | 3 +--
 .../testsuite/25_algorithms/partition_copy/constexpr.cc        | 3 +--
 .../testsuite/25_algorithms/partition_copy/constrained.cc      | 3 +--
 .../testsuite/25_algorithms/partition_point/constexpr.cc       | 3 +--
 .../testsuite/25_algorithms/partition_point/constrained.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/pop_heap/constexpr.cc     | 3 +--
 .../testsuite/25_algorithms/prev_permutation/constexpr.cc      | 3 +--
 .../testsuite/25_algorithms/prev_permutation/constrained.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/push_heap/constexpr.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/remove/constexpr.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/remove/constrained.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/remove_copy/constexpr.cc  | 3 +--
 .../testsuite/25_algorithms/remove_copy/constrained.cc         | 3 +--
 .../testsuite/25_algorithms/remove_copy_if/constexpr.cc        | 3 +--
 .../testsuite/25_algorithms/remove_copy_if/constrained.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/remove_if/constexpr.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/remove_if/constrained.cc  | 3 +--
 libstdc++-v3/testsuite/25_algorithms/replace/constrained.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/replace_copy/constexpr.cc | 3 +--
 .../testsuite/25_algorithms/replace_copy/constrained.cc        | 3 +--
 .../testsuite/25_algorithms/replace_copy_if/constexpr.cc       | 3 +--
 .../testsuite/25_algorithms/replace_copy_if/constrained.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/replace_if/constexpr.cc   | 3 +--
 libstdc++-v3/testsuite/25_algorithms/replace_if/constrained.cc | 3 +--
 libstdc++-v3/testsuite/25_algorithms/reverse/constexpr.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/reverse/constrained.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/reverse_copy/constexpr.cc | 3 +--
 .../testsuite/25_algorithms/reverse_copy/constrained.cc        | 3 +--
 libstdc++-v3/testsuite/25_algorithms/rotate/constexpr.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/rotate/constrained.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/rotate_copy/constexpr.cc  | 3 +--
 .../testsuite/25_algorithms/rotate_copy/constrained.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/sample/constrained.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/search/constexpr.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/search/constrained.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/search_n/97828.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/search_n/constexpr.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/search_n/constrained.cc   | 3 +--
 .../testsuite/25_algorithms/set_difference/constexpr.cc        | 3 +--
 .../testsuite/25_algorithms/set_difference/constrained.cc      | 3 +--
 .../testsuite/25_algorithms/set_intersection/constexpr.cc      | 3 +--
 .../testsuite/25_algorithms/set_intersection/constrained.cc    | 3 +--
 .../25_algorithms/set_symmetric_difference/constexpr.cc        | 3 +--
 .../25_algorithms/set_symmetric_difference/constrained.cc      | 3 +--
 libstdc++-v3/testsuite/25_algorithms/set_union/constexpr.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/set_union/constrained.cc  | 3 +--
 libstdc++-v3/testsuite/25_algorithms/shift_left/1.cc           | 3 +--
 libstdc++-v3/testsuite/25_algorithms/shift_right/1.cc          | 3 +--
 libstdc++-v3/testsuite/25_algorithms/shuffle/constrained.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/sort/constexpr.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/sort/constrained.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/sort_heap/constexpr.cc    | 3 +--
 .../testsuite/25_algorithms/stable_partition/constrained.cc    | 3 +--
 .../testsuite/25_algorithms/stable_sort/constrained.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/swap/constexpr.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/swap_ranges/constexpr.cc  | 3 +--
 .../testsuite/25_algorithms/swap_ranges/constrained.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/transform/constexpr.cc    | 3 +--
 libstdc++-v3/testsuite/25_algorithms/transform/constrained.cc  | 3 +--
 libstdc++-v3/testsuite/25_algorithms/unique/constexpr.cc       | 3 +--
 libstdc++-v3/testsuite/25_algorithms/unique/constrained.cc     | 3 +--
 libstdc++-v3/testsuite/25_algorithms/unique_copy/constexpr.cc  | 3 +--
 .../testsuite/25_algorithms/unique_copy/constrained.cc         | 3 +--
 libstdc++-v3/testsuite/25_algorithms/upper_bound/constexpr.cc  | 3 +--
 .../testsuite/25_algorithms/upper_bound/constrained.cc         | 3 +--
 .../upper_bound/debug/constexpr_partitioned_neg.cc             | 3 +--
 .../upper_bound/debug/constexpr_partitioned_pred_neg.cc        | 3 +--
 .../upper_bound/debug/constexpr_valid_range_neg.cc             | 3 +--
 196 files changed, 194 insertions(+), 390 deletions(-)

diff --git a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/equal_to.cc b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/equal_to.cc
index 0a300447b03..c29bf02249a 100644
--- a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/equal_to.cc
+++ b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/equal_to.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <functional>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/greater.cc b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/greater.cc
index 3308735d02a..cd5a73d071c 100644
--- a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/greater.cc
+++ b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/greater.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <functional>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/greater_equal.cc b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/greater_equal.cc
index aee97f16d66..46bc2e44946 100644
--- a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/greater_equal.cc
+++ b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/greater_equal.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <functional>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/less.cc b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/less.cc
index 185c3f8540b..472962fa863 100644
--- a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/less.cc
+++ b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/less.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <functional>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/less_equal.cc b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/less_equal.cc
index d1877ee66e2..776220393c3 100644
--- a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/less_equal.cc
+++ b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/less_equal.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <functional>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/lwg3530.cc b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/lwg3530.cc
index 369ff5465aa..858e8dbeba5 100644
--- a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/lwg3530.cc
+++ b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/lwg3530.cc
@@ -15,7 +15,6 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++20" }
 // { dg-do compile { target c++20 } }
 
 #include <functional>
diff --git a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/not_equal_to.cc b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/not_equal_to.cc
index 756eb65b55e..c42ebe7b1ad 100644
--- a/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/not_equal_to.cc
+++ b/libstdc++-v3/testsuite/20_util/function_objects/range.cmp/not_equal_to.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <functional>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/1.cc b/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/1.cc
index e00a53972bc..6fda8fc96c0 100644
--- a/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/1.cc
+++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/1.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <memory>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc b/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc
index d215d06f09b..33f52e0f780 100644
--- a/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc
+++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc
@@ -1,5 +1,4 @@
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 // Copyright (C) 2020-2023 Free Software Foundation, Inc.
 //
diff --git a/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/95788.cc b/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/95788.cc
index bbf1c988d5f..7f6bfb04fa4 100644
--- a/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/95788.cc
+++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/construct_at/95788.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // FIXME [!HOSTED]: avoidable std::allocator usage
 // { dg-require-effective-target hosted }
 
diff --git a/libstdc++-v3/testsuite/20_util/specialized_algorithms/destroy/constrained.cc b/libstdc++-v3/testsuite/20_util/specialized_algorithms/destroy/constrained.cc
index 7d64a6a9eeb..0a0287f4284 100644
--- a/libstdc++-v3/testsuite/20_util/specialized_algorithms/destroy/constrained.cc
+++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/destroy/constrained.cc
@@ -14,8 +14,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <cstring>
diff --git a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy/constrained.cc b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy/constrained.cc
index 9885d444768..1dbfe0b45e2 100644
--- a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy/constrained.cc
+++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy/constrained.cc
@@ -14,8 +14,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <cstring>
diff --git a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_default_construct/constrained.cc b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_default_construct/constrained.cc
index 983abb2621a..4dabd25ac6c 100644
--- a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_default_construct/constrained.cc
+++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_default_construct/constrained.cc
@@ -14,8 +14,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <cstring>
diff --git a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc
index dd3f8e8df31..dff67be3eee 100644
--- a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc
+++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <memory>
diff --git a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill/constrained.cc b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill/constrained.cc
index 3b5c0a0a714..82e766baa73 100644
--- a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill/constrained.cc
+++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill/constrained.cc
@@ -14,8 +14,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <cstring>
diff --git a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc
index fd26bf25636..e23efc9dc03 100644
--- a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc
+++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <memory>
diff --git a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_move/constrained.cc b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_move/constrained.cc
index 23dcefdd3df..b38700c76fd 100644
--- a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_move/constrained.cc
+++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_move/constrained.cc
@@ -14,8 +14,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <cstring>
diff --git a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc
index dd844797c00..7aa07d321c4 100644
--- a/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc
+++ b/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc
@@ -14,8 +14,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <cstring>
diff --git a/libstdc++-v3/testsuite/25_algorithms/adjacent_find/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/adjacent_find/constexpr.cc
index 1ba75b49ab9..501b5db1707 100644
--- a/libstdc++-v3/testsuite/25_algorithms/adjacent_find/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/adjacent_find/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/adjacent_find/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/adjacent_find/constrained.cc
index 04845639d8e..bbb009079e5 100644
--- a/libstdc++-v3/testsuite/25_algorithms/adjacent_find/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/adjacent_find/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/all_of/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/all_of/constexpr.cc
index fd7ea0f853e..260d4886fa2 100644
--- a/libstdc++-v3/testsuite/25_algorithms/all_of/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/all_of/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/all_of/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/all_of/constrained.cc
index 8da20d6e885..8c7d8f91db9 100644
--- a/libstdc++-v3/testsuite/25_algorithms/all_of/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/all_of/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/any_of/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/any_of/constexpr.cc
index d8f61043e47..4d30d987f4a 100644
--- a/libstdc++-v3/testsuite/25_algorithms/any_of/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/any_of/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/any_of/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/any_of/constrained.cc
index 14e67d89dc7..8cf7f3c2109 100644
--- a/libstdc++-v3/testsuite/25_algorithms/any_of/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/any_of/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/binary_search/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/binary_search/constexpr.cc
index 8e12d15cbba..2048abd9e25 100644
--- a/libstdc++-v3/testsuite/25_algorithms/binary_search/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/binary_search/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/binary_search/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/binary_search/constrained.cc
index 1f3f92e66ac..b2c68812e0a 100644
--- a/libstdc++-v3/testsuite/25_algorithms/binary_search/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/binary_search/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/clamp/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/clamp/constrained.cc
index 990e5b740e4..37211f432b7 100644
--- a/libstdc++-v3/testsuite/25_algorithms/clamp/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/clamp/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/constexpr_macro.cc b/libstdc++-v3/testsuite/25_algorithms/constexpr_macro.cc
index e70605f46f5..d591b11bd5f 100644
--- a/libstdc++-v3/testsuite/25_algorithms/constexpr_macro.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/constexpr_macro.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // { dg-require-effective-target hosted }
 
 #include <version>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy/95578.cc b/libstdc++-v3/testsuite/25_algorithms/copy/95578.cc
index 155d4b7daaa..92519ccaca4 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy/95578.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy/95578.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/copy/constexpr.cc
index 1d7940c818e..5d12fe04807 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/copy/constrained.cc
index 4f2e808fd58..06080862a5e 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy/debug/constexpr_neg.cc b/libstdc++-v3/testsuite/25_algorithms/copy/debug/constexpr_neg.cc
index bf3c4939bfb..d99a95ef7bd 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy/debug/constexpr_neg.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy/debug/constexpr_neg.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // { dg-require-debug-mode ""  }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_backward/95578.cc b/libstdc++-v3/testsuite/25_algorithms/copy_backward/95578.cc
index 4426af94441..910a8b1756a 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy_backward/95578.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_backward/95578.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_backward/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/copy_backward/constexpr.cc
index c2ec568ebeb..efafa087a1e 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy_backward/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_backward/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_backward/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/copy_backward/constrained.cc
index fc3f87e6ed9..4bf13eff1cd 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy_backward/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_backward/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc b/libstdc++-v3/testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc
index 6bf7f47055d..0077fb6e46b 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // { dg-require-debug-mode ""  }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_if/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/copy_if/constexpr.cc
index e3c2328751d..7f22f131618 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy_if/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_if/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_if/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/copy_if/constrained.cc
index c35e343c685..d3772e89be0 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy_if/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_if/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_n/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/copy_n/constexpr.cc
index 39b0a6d4cb1..26dfd461357 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy_n/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_n/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_n/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/copy_n/constrained.cc
index 20abe04ee1e..cd7c91a6bdc 100644
--- a/libstdc++-v3/testsuite/25_algorithms/copy_n/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_n/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/count/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/count/constexpr.cc
index 2bfb86b3504..4432778efec 100644
--- a/libstdc++-v3/testsuite/25_algorithms/count/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/count/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/count/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/count/constrained.cc
index 09a26ddf7ea..8686e084186 100644
--- a/libstdc++-v3/testsuite/25_algorithms/count/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/count/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/count_if/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/count_if/constexpr.cc
index 3a0e28cbd14..6325fdcd8c1 100644
--- a/libstdc++-v3/testsuite/25_algorithms/count_if/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/count_if/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/count_if/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/count_if/constrained.cc
index c22cb596f61..f1804f4aae4 100644
--- a/libstdc++-v3/testsuite/25_algorithms/count_if/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/count_if/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/cpp_lib_constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/cpp_lib_constexpr.cc
index c2eb07e29b9..0774032b0a0 100644
--- a/libstdc++-v3/testsuite/25_algorithms/cpp_lib_constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/cpp_lib_constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 
diff --git a/libstdc++-v3/testsuite/25_algorithms/equal/95578.cc b/libstdc++-v3/testsuite/25_algorithms/equal/95578.cc
index 6b01a699d05..f1816b665d7 100644
--- a/libstdc++-v3/testsuite/25_algorithms/equal/95578.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/equal/95578.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/equal/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/equal/constexpr.cc
index 7259000d59b..65d9707e7d1 100644
--- a/libstdc++-v3/testsuite/25_algorithms/equal/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/equal/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/equal/constexpr_neg.cc b/libstdc++-v3/testsuite/25_algorithms/equal/constexpr_neg.cc
index fd89ac0e166..db4cd2a43b1 100644
--- a/libstdc++-v3/testsuite/25_algorithms/equal/constexpr_neg.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/equal/constexpr_neg.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // { dg-require-normal-mode "" }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/equal/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/equal/constrained.cc
index c8bb00b1599..ac1feb3ca12 100644
--- a/libstdc++-v3/testsuite/25_algorithms/equal/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/equal/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 // { dg-require-effective-target hosted }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/equal/debug/constexpr_neg.cc b/libstdc++-v3/testsuite/25_algorithms/equal/debug/constexpr_neg.cc
index f5e46e58e49..5379dd35b7b 100644
--- a/libstdc++-v3/testsuite/25_algorithms/equal/debug/constexpr_neg.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/equal/debug/constexpr_neg.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // { dg-require-debug-mode "" }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/equal_range/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/equal_range/constexpr.cc
index a902e80d45b..d8f265d87b0 100644
--- a/libstdc++-v3/testsuite/25_algorithms/equal_range/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/equal_range/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/equal_range/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/equal_range/constrained.cc
index 04108b83aef..31bc4340e6d 100644
--- a/libstdc++-v3/testsuite/25_algorithms/equal_range/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/equal_range/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/fill/94017.cc b/libstdc++-v3/testsuite/25_algorithms/fill/94017.cc
index 23dc4570b09..dc36af488d6 100644
--- a/libstdc++-v3/testsuite/25_algorithms/fill/94017.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/fill/94017.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/fill/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/fill/constexpr.cc
index 9c1ac5cf296..59bdd113a41 100644
--- a/libstdc++-v3/testsuite/25_algorithms/fill/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/fill/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/fill/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/fill/constrained.cc
index fe868396895..296274f5ed7 100644
--- a/libstdc++-v3/testsuite/25_algorithms/fill/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/fill/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/fill_n/94017.cc b/libstdc++-v3/testsuite/25_algorithms/fill_n/94017.cc
index 1c0d7e51290..cf69331adb1 100644
--- a/libstdc++-v3/testsuite/25_algorithms/fill_n/94017.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/fill_n/94017.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/fill_n/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/fill_n/constexpr.cc
index 0fdf22e0ade..9c024740ce3 100644
--- a/libstdc++-v3/testsuite/25_algorithms/fill_n/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/fill_n/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/fill_n/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/fill_n/constrained.cc
index 75334901ced..7d21f48bb23 100644
--- a/libstdc++-v3/testsuite/25_algorithms/fill_n/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/fill_n/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/find/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/find/constexpr.cc
index 9005f9fdf38..85f49f4827a 100644
--- a/libstdc++-v3/testsuite/25_algorithms/find/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/find/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/find/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/find/constrained.cc
index 0f0b7354ff0..378e631537a 100644
--- a/libstdc++-v3/testsuite/25_algorithms/find/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/find/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/find_end/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/find_end/constexpr.cc
index 5315cb7fad9..663539ba9fc 100644
--- a/libstdc++-v3/testsuite/25_algorithms/find_end/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/find_end/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/find_end/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/find_end/constrained.cc
index e6369dd3865..51f3250e322 100644
--- a/libstdc++-v3/testsuite/25_algorithms/find_end/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/find_end/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/find_first_of/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/find_first_of/constexpr.cc
index b60594d2a76..0c3c155093b 100644
--- a/libstdc++-v3/testsuite/25_algorithms/find_first_of/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/find_first_of/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/find_first_of/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/find_first_of/constrained.cc
index b1684a83efc..0320df85f91 100644
--- a/libstdc++-v3/testsuite/25_algorithms/find_first_of/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/find_first_of/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/find_if/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/find_if/constexpr.cc
index a0f84029630..39592bfccd4 100644
--- a/libstdc++-v3/testsuite/25_algorithms/find_if/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/find_if/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/find_if/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/find_if/constrained.cc
index d8240e81db0..210fc881f19 100644
--- a/libstdc++-v3/testsuite/25_algorithms/find_if/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/find_if/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/find_if_not/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/find_if_not/constexpr.cc
index 3c0d4453d6d..667b1419d3f 100644
--- a/libstdc++-v3/testsuite/25_algorithms/find_if_not/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/find_if_not/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/find_if_not/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/find_if_not/constrained.cc
index 1655b009bbb..312a8399e81 100644
--- a/libstdc++-v3/testsuite/25_algorithms/find_if_not/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/find_if_not/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/for_each/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/for_each/constexpr.cc
index 06ccf126fd8..7bc64ebc0cf 100644
--- a/libstdc++-v3/testsuite/25_algorithms/for_each/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/for_each/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/for_each/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/for_each/constrained.cc
index 2258ebb9e75..1150f14ef55 100644
--- a/libstdc++-v3/testsuite/25_algorithms/for_each/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/for_each/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/generate/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/generate/constexpr.cc
index 716ba4f8c47..0e7bd722ab6 100644
--- a/libstdc++-v3/testsuite/25_algorithms/generate/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/generate/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/generate/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/generate/constrained.cc
index ee159df4837..90cac5ad6ec 100644
--- a/libstdc++-v3/testsuite/25_algorithms/generate/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/generate/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/generate_n/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/generate_n/constexpr.cc
index 6a29eb27ab6..ff3f7ac1180 100644
--- a/libstdc++-v3/testsuite/25_algorithms/generate_n/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/generate_n/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/generate_n/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/generate_n/constrained.cc
index be2c7173189..c2445e9d1ac 100644
--- a/libstdc++-v3/testsuite/25_algorithms/generate_n/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/generate_n/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/heap/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/heap/constrained.cc
index 01507f27abf..20dc63d08df 100644
--- a/libstdc++-v3/testsuite/25_algorithms/heap/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/heap/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 // { dg-require-cstdint "" }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/includes/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/includes/constrained.cc
index 8bf156c738b..3463db9129b 100644
--- a/libstdc++-v3/testsuite/25_algorithms/includes/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/includes/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/inplace_merge/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/inplace_merge/constrained.cc
index 5e72acceb29..a17f2ee8ee3 100644
--- a/libstdc++-v3/testsuite/25_algorithms/inplace_merge/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/inplace_merge/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/is_heap/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/is_heap/constexpr.cc
index 7448a9eebf2..30a2e1259a1 100644
--- a/libstdc++-v3/testsuite/25_algorithms/is_heap/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/is_heap/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/is_heap_until/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/is_heap_until/constexpr.cc
index 3134f606227..a58707b692f 100644
--- a/libstdc++-v3/testsuite/25_algorithms/is_heap_until/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/is_heap_until/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/is_partitioned/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/is_partitioned/constexpr.cc
index 8a6d0a2d689..08557d88965 100644
--- a/libstdc++-v3/testsuite/25_algorithms/is_partitioned/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/is_partitioned/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/is_partitioned/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/is_partitioned/constrained.cc
index cb2d4426266..a35e3f45ead 100644
--- a/libstdc++-v3/testsuite/25_algorithms/is_partitioned/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/is_partitioned/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/is_permutation/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/is_permutation/constexpr.cc
index 9226f50f2d0..758696662f0 100644
--- a/libstdc++-v3/testsuite/25_algorithms/is_permutation/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/is_permutation/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/is_permutation/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/is_permutation/constrained.cc
index e503247d44a..ffdb2d4647b 100644
--- a/libstdc++-v3/testsuite/25_algorithms/is_permutation/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/is_permutation/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <iterator>
diff --git a/libstdc++-v3/testsuite/25_algorithms/is_sorted/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/is_sorted/constexpr.cc
index a6282acbb92..637489ff8aa 100644
--- a/libstdc++-v3/testsuite/25_algorithms/is_sorted/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/is_sorted/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/is_sorted/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/is_sorted/constrained.cc
index 7309c3f4304..ee978e9a34d 100644
--- a/libstdc++-v3/testsuite/25_algorithms/is_sorted/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/is_sorted/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/is_sorted_until/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/is_sorted_until/constexpr.cc
index f54953d066c..05b096a32f4 100644
--- a/libstdc++-v3/testsuite/25_algorithms/is_sorted_until/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/is_sorted_until/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/is_sorted_until/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/is_sorted_until/constrained.cc
index e3b64fbe441..b693f723fbc 100644
--- a/libstdc++-v3/testsuite/25_algorithms/is_sorted_until/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/is_sorted_until/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/iter_swap/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/iter_swap/constexpr.cc
index 1919554f930..c58191cd86d 100644
--- a/libstdc++-v3/testsuite/25_algorithms/iter_swap/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/iter_swap/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/93972.cc b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/93972.cc
index cc4ea7bfb67..418f084111e 100644
--- a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/93972.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/93972.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/95578.cc b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/95578.cc
index 24f52bfd36d..568346b292d 100644
--- a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/95578.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/95578.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/constexpr.cc
index a6f43221c76..06eccf54c81 100644
--- a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/constrained.cc
index e8eafa9ae45..609d604debf 100644
--- a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 // { dg-require-effective-target hosted }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/1.cc b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/1.cc
index 633a5bdab5a..bd761b00d42 100644
--- a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/1.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/1.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/constexpr.cc
index 7781ffdbe78..019179fce41 100644
--- a/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/lexicographical_compare_three_way/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 
diff --git a/libstdc++-v3/testsuite/25_algorithms/lower_bound/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/lower_bound/constexpr.cc
index 6f3f61d07c3..450d09554b4 100644
--- a/libstdc++-v3/testsuite/25_algorithms/lower_bound/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/lower_bound/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/lower_bound/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/lower_bound/constrained.cc
index 97954673ddc..6b3992f0228 100644
--- a/libstdc++-v3/testsuite/25_algorithms/lower_bound/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/lower_bound/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc b/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc
index 74f947ece7c..6b41a8c3ed9 100644
--- a/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // { dg-require-debug-mode { } }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc b/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc
index 4b125b5b4f3..0d8413a481f 100644
--- a/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // { dg-require-debug-mode { } }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc b/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc
index 1edf35ccc0b..a052b710f36 100644
--- a/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // { dg-require-debug-mode { } }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/make_heap/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/make_heap/constexpr.cc
index 5399782c7d5..07c57581b60 100644
--- a/libstdc++-v3/testsuite/25_algorithms/make_heap/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/make_heap/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/max/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/max/constrained.cc
index b204d8bf9b0..13e450fb6b1 100644
--- a/libstdc++-v3/testsuite/25_algorithms/max/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/max/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/max_element/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/max_element/constrained.cc
index 0b8af2ba5cb..fcb8b37e64a 100644
--- a/libstdc++-v3/testsuite/25_algorithms/max_element/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/max_element/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/merge/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/merge/constexpr.cc
index fa0c7e374cb..7e5cc5036a7 100644
--- a/libstdc++-v3/testsuite/25_algorithms/merge/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/merge/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/merge/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/merge/constrained.cc
index cffca3c37b2..41923fc7622 100644
--- a/libstdc++-v3/testsuite/25_algorithms/merge/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/merge/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/min/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/min/constrained.cc
index ce2163e3380..2f07532a7b2 100644
--- a/libstdc++-v3/testsuite/25_algorithms/min/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/min/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/min_element/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/min_element/constrained.cc
index 2709571cbda..8c535390187 100644
--- a/libstdc++-v3/testsuite/25_algorithms/min_element/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/min_element/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/minmax/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/minmax/constrained.cc
index 4fce546adf5..262cde7658b 100644
--- a/libstdc++-v3/testsuite/25_algorithms/minmax/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/minmax/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <string>
diff --git a/libstdc++-v3/testsuite/25_algorithms/minmax_element/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/minmax_element/constrained.cc
index 1e5f7c92fed..e6a57c129ed 100644
--- a/libstdc++-v3/testsuite/25_algorithms/minmax_element/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/minmax_element/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/mismatch/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/mismatch/constexpr.cc
index 537e8ac5d15..5389d4f3400 100644
--- a/libstdc++-v3/testsuite/25_algorithms/mismatch/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/mismatch/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/mismatch/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/mismatch/constrained.cc
index ddb0170e24f..d1237e145b5 100644
--- a/libstdc++-v3/testsuite/25_algorithms/mismatch/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/mismatch/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/move/93872.cc b/libstdc++-v3/testsuite/25_algorithms/move/93872.cc
index 2b77a4f4e4b..ce221472a1b 100644
--- a/libstdc++-v3/testsuite/25_algorithms/move/93872.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/move/93872.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <iterator>
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/move/95578.cc b/libstdc++-v3/testsuite/25_algorithms/move/95578.cc
index aec6520f78e..a65e2baf82f 100644
--- a/libstdc++-v3/testsuite/25_algorithms/move/95578.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/move/95578.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/move/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/move/constexpr.cc
index eb1f3b17e72..f678e104bd6 100644
--- a/libstdc++-v3/testsuite/25_algorithms/move/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/move/constexpr.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do compile { target c++20 } }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/move/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/move/constrained.cc
index 29a1abaaa02..abedfe76540 100644
--- a/libstdc++-v3/testsuite/25_algorithms/move/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/move/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/move_backward/93872.cc b/libstdc++-v3/testsuite/25_algorithms/move_backward/93872.cc
index 10b58551761..29a54d404dc 100644
--- a/libstdc++-v3/testsuite/25_algorithms/move_backward/93872.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/move_backward/93872.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <iterator>
diff --git a/libstdc++-v3/testsuite/25_algorithms/move_backward/95578.cc b/libstdc++-v3/testsuite/25_algorithms/move_backward/95578.cc
index 59403934599..eb97b74c082 100644
--- a/libstdc++-v3/testsuite/25_algorithms/move_backward/95578.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/move_backward/95578.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/move_backward/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/move_backward/constrained.cc
index bf9be9c730d..ebca065f50f 100644
--- a/libstdc++-v3/testsuite/25_algorithms/move_backward/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/move_backward/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <vector>
diff --git a/libstdc++-v3/testsuite/25_algorithms/next_permutation/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/next_permutation/constexpr.cc
index 2e496528009..9993277c7d3 100644
--- a/libstdc++-v3/testsuite/25_algorithms/next_permutation/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/next_permutation/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/next_permutation/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/next_permutation/constrained.cc
index 1fb911a8cb5..20c46fd979c 100644
--- a/libstdc++-v3/testsuite/25_algorithms/next_permutation/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/next_permutation/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/none_of/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/none_of/constexpr.cc
index e0bdd4043b7..e1555797b58 100644
--- a/libstdc++-v3/testsuite/25_algorithms/none_of/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/none_of/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/none_of/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/none_of/constrained.cc
index aa955709053..84fafdc1d60 100644
--- a/libstdc++-v3/testsuite/25_algorithms/none_of/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/none_of/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/nth_element/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/nth_element/constexpr.cc
index b9e1b2277c8..4962f455bba 100644
--- a/libstdc++-v3/testsuite/25_algorithms/nth_element/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/nth_element/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/nth_element/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/nth_element/constrained.cc
index 79ddf8089d2..eee682cc7d4 100644
--- a/libstdc++-v3/testsuite/25_algorithms/nth_element/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/nth_element/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 // { dg-require-cstdint "" }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/partial_sort/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/partial_sort/constexpr.cc
index 9eddfd934e4..00002b4a507 100644
--- a/libstdc++-v3/testsuite/25_algorithms/partial_sort/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/partial_sort/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/partial_sort/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/partial_sort/constrained.cc
index ee40b9e3d79..c19574c5ac5 100644
--- a/libstdc++-v3/testsuite/25_algorithms/partial_sort/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/partial_sort/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 // { dg-require-cstdint "" }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/partial_sort_copy/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/partial_sort_copy/constexpr.cc
index 6782130e387..f070524616e 100644
--- a/libstdc++-v3/testsuite/25_algorithms/partial_sort_copy/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/partial_sort_copy/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/partial_sort_copy/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/partial_sort_copy/constrained.cc
index d521c0a0804..3ae74e7510d 100644
--- a/libstdc++-v3/testsuite/25_algorithms/partial_sort_copy/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/partial_sort_copy/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 // { dg-require-cstdint "" }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/partition/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/partition/constexpr.cc
index 88792603baf..190cc24c0e9 100644
--- a/libstdc++-v3/testsuite/25_algorithms/partition/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/partition/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/partition/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/partition/constrained.cc
index cd393c041e8..7049efdcb97 100644
--- a/libstdc++-v3/testsuite/25_algorithms/partition/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/partition/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/partition_copy/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/partition_copy/constexpr.cc
index ab57e4fe097..dcdee0684db 100644
--- a/libstdc++-v3/testsuite/25_algorithms/partition_copy/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/partition_copy/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/partition_copy/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/partition_copy/constrained.cc
index d0189cb7029..be3ace75c56 100644
--- a/libstdc++-v3/testsuite/25_algorithms/partition_copy/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/partition_copy/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/partition_point/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/partition_point/constexpr.cc
index c41f559268d..20aa221d53e 100644
--- a/libstdc++-v3/testsuite/25_algorithms/partition_point/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/partition_point/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/partition_point/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/partition_point/constrained.cc
index 3b50730c827..de465231ba0 100644
--- a/libstdc++-v3/testsuite/25_algorithms/partition_point/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/partition_point/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/pop_heap/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/pop_heap/constexpr.cc
index c5697291ef3..f7bc0522791 100644
--- a/libstdc++-v3/testsuite/25_algorithms/pop_heap/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/pop_heap/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/prev_permutation/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/prev_permutation/constexpr.cc
index ac75fecb519..8e2b254cda2 100644
--- a/libstdc++-v3/testsuite/25_algorithms/prev_permutation/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/prev_permutation/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/prev_permutation/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/prev_permutation/constrained.cc
index cab8ba24d27..e31e594bf0f 100644
--- a/libstdc++-v3/testsuite/25_algorithms/prev_permutation/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/prev_permutation/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/push_heap/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/push_heap/constexpr.cc
index e1aa47b0714..97947968697 100644
--- a/libstdc++-v3/testsuite/25_algorithms/push_heap/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/push_heap/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/remove/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/remove/constexpr.cc
index dfb1ea930fe..22dba856a47 100644
--- a/libstdc++-v3/testsuite/25_algorithms/remove/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/remove/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/remove/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/remove/constrained.cc
index 144bd8d808a..81f3954ac7f 100644
--- a/libstdc++-v3/testsuite/25_algorithms/remove/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/remove/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/remove_copy/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/remove_copy/constexpr.cc
index b69148114f2..685e39cfc7c 100644
--- a/libstdc++-v3/testsuite/25_algorithms/remove_copy/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/remove_copy/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/remove_copy/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/remove_copy/constrained.cc
index 92841e40673..60daaf6778d 100644
--- a/libstdc++-v3/testsuite/25_algorithms/remove_copy/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/remove_copy/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/remove_copy_if/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/remove_copy_if/constexpr.cc
index 2f55cf6b032..2fab7f38f2f 100644
--- a/libstdc++-v3/testsuite/25_algorithms/remove_copy_if/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/remove_copy_if/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/remove_copy_if/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/remove_copy_if/constrained.cc
index ae07592231d..d3898630663 100644
--- a/libstdc++-v3/testsuite/25_algorithms/remove_copy_if/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/remove_copy_if/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/remove_if/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/remove_if/constexpr.cc
index 3c55c173a5e..4888e48898f 100644
--- a/libstdc++-v3/testsuite/25_algorithms/remove_if/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/remove_if/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/remove_if/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/remove_if/constrained.cc
index 9d11c69d25d..934357b15f6 100644
--- a/libstdc++-v3/testsuite/25_algorithms/remove_if/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/remove_if/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/replace/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/replace/constrained.cc
index df0e3f493b9..8e6de45f8e6 100644
--- a/libstdc++-v3/testsuite/25_algorithms/replace/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/replace/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/replace_copy/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/replace_copy/constexpr.cc
index 7c0fbed51b8..8c0aed47b20 100644
--- a/libstdc++-v3/testsuite/25_algorithms/replace_copy/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/replace_copy/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/replace_copy/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/replace_copy/constrained.cc
index 76794db3305..c016c2b83d2 100644
--- a/libstdc++-v3/testsuite/25_algorithms/replace_copy/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/replace_copy/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/replace_copy_if/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/replace_copy_if/constexpr.cc
index f0e4729131e..86cde832cf5 100644
--- a/libstdc++-v3/testsuite/25_algorithms/replace_copy_if/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/replace_copy_if/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/replace_copy_if/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/replace_copy_if/constrained.cc
index d767776194d..463e7c5161c 100644
--- a/libstdc++-v3/testsuite/25_algorithms/replace_copy_if/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/replace_copy_if/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/replace_if/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/replace_if/constexpr.cc
index 1036f8f23b1..e729589c6d0 100644
--- a/libstdc++-v3/testsuite/25_algorithms/replace_if/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/replace_if/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/replace_if/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/replace_if/constrained.cc
index cfc31f1c32d..89d78ac3a38 100644
--- a/libstdc++-v3/testsuite/25_algorithms/replace_if/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/replace_if/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/reverse/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/reverse/constexpr.cc
index 15140014a09..ea559c02e60 100644
--- a/libstdc++-v3/testsuite/25_algorithms/reverse/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/reverse/constexpr.cc
@@ -14,8 +14,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/reverse/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/reverse/constrained.cc
index aea85589f35..6d4603c603c 100644
--- a/libstdc++-v3/testsuite/25_algorithms/reverse/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/reverse/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/reverse_copy/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/reverse_copy/constexpr.cc
index 3700be2b214..7d7b47f5987 100644
--- a/libstdc++-v3/testsuite/25_algorithms/reverse_copy/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/reverse_copy/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/reverse_copy/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/reverse_copy/constrained.cc
index d1bd5350383..68e693667f8 100644
--- a/libstdc++-v3/testsuite/25_algorithms/reverse_copy/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/reverse_copy/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/rotate/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/rotate/constexpr.cc
index b58f7f17b32..e65cae7c3d3 100644
--- a/libstdc++-v3/testsuite/25_algorithms/rotate/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/rotate/constexpr.cc
@@ -14,8 +14,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/rotate/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/rotate/constrained.cc
index d0b6409da0d..0167f1341db 100644
--- a/libstdc++-v3/testsuite/25_algorithms/rotate/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/rotate/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/rotate_copy/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/rotate_copy/constexpr.cc
index c85aa707538..467f7c343ad 100644
--- a/libstdc++-v3/testsuite/25_algorithms/rotate_copy/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/rotate_copy/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/rotate_copy/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/rotate_copy/constrained.cc
index 2d709bbac28..ab3b5e6567d 100644
--- a/libstdc++-v3/testsuite/25_algorithms/rotate_copy/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/rotate_copy/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/sample/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/sample/constrained.cc
index 4f176c6b991..5b089d6dde9 100644
--- a/libstdc++-v3/testsuite/25_algorithms/sample/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/sample/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 // { dg-require-cstdint "" }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/search/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/search/constexpr.cc
index 0ada072e325..8a0edc6390c 100644
--- a/libstdc++-v3/testsuite/25_algorithms/search/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/search/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/search/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/search/constrained.cc
index f1f50005c8d..0848a0af315 100644
--- a/libstdc++-v3/testsuite/25_algorithms/search/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/search/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/search_n/97828.cc b/libstdc++-v3/testsuite/25_algorithms/search_n/97828.cc
index 662f5a23c8d..b6f9fda6cb0 100644
--- a/libstdc++-v3/testsuite/25_algorithms/search_n/97828.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/search_n/97828.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 // PR libstdc++/97828
 
diff --git a/libstdc++-v3/testsuite/25_algorithms/search_n/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/search_n/constexpr.cc
index 1941ea7f197..7285379381f 100644
--- a/libstdc++-v3/testsuite/25_algorithms/search_n/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/search_n/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/search_n/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/search_n/constrained.cc
index a5df93bdab2..503bcd23c35 100644
--- a/libstdc++-v3/testsuite/25_algorithms/search_n/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/search_n/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/set_difference/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/set_difference/constexpr.cc
index 04f170613a4..94c4aa330c2 100644
--- a/libstdc++-v3/testsuite/25_algorithms/set_difference/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/set_difference/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/set_difference/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/set_difference/constrained.cc
index f668196a5f0..ca57ab68527 100644
--- a/libstdc++-v3/testsuite/25_algorithms/set_difference/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/set_difference/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/set_intersection/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/set_intersection/constexpr.cc
index 4a6721e64d5..8135f9ff6d5 100644
--- a/libstdc++-v3/testsuite/25_algorithms/set_intersection/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/set_intersection/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/set_intersection/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/set_intersection/constrained.cc
index e56b97814d7..7f554b2426d 100644
--- a/libstdc++-v3/testsuite/25_algorithms/set_intersection/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/set_intersection/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/set_symmetric_difference/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/set_symmetric_difference/constexpr.cc
index 5877020507d..49f9cffd8b1 100644
--- a/libstdc++-v3/testsuite/25_algorithms/set_symmetric_difference/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/set_symmetric_difference/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/set_symmetric_difference/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/set_symmetric_difference/constrained.cc
index 033de26af5a..83c643fa645 100644
--- a/libstdc++-v3/testsuite/25_algorithms/set_symmetric_difference/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/set_symmetric_difference/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 // { dg-require-cstdint "" }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/set_union/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/set_union/constexpr.cc
index 52b3103013e..d5203467d5c 100644
--- a/libstdc++-v3/testsuite/25_algorithms/set_union/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/set_union/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/set_union/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/set_union/constrained.cc
index 3b7882f2a59..3b523376de5 100644
--- a/libstdc++-v3/testsuite/25_algorithms/set_union/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/set_union/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/shift_left/1.cc b/libstdc++-v3/testsuite/25_algorithms/shift_left/1.cc
index fd65b414c04..5bb8e920ef0 100644
--- a/libstdc++-v3/testsuite/25_algorithms/shift_left/1.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/shift_left/1.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/shift_right/1.cc b/libstdc++-v3/testsuite/25_algorithms/shift_right/1.cc
index 1a03e2928c5..70b07a55008 100644
--- a/libstdc++-v3/testsuite/25_algorithms/shift_right/1.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/shift_right/1.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/shuffle/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/shuffle/constrained.cc
index e2f329cb309..b6c2d7f3a4d 100644
--- a/libstdc++-v3/testsuite/25_algorithms/shuffle/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/shuffle/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 // { dg-require-cstdint "" }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/sort/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/sort/constexpr.cc
index ddbd376a76a..40fcf533e02 100644
--- a/libstdc++-v3/testsuite/25_algorithms/sort/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/sort/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/sort/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/sort/constrained.cc
index 3b8bbf8a137..f6379d6a97c 100644
--- a/libstdc++-v3/testsuite/25_algorithms/sort/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/sort/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 // { dg-require-cstdint "" }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/sort_heap/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/sort_heap/constexpr.cc
index a8a8ce1e438..d3b4b9a81b4 100644
--- a/libstdc++-v3/testsuite/25_algorithms/sort_heap/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/sort_heap/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/stable_partition/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/stable_partition/constrained.cc
index f3f4e233b4a..4dfc21d80ae 100644
--- a/libstdc++-v3/testsuite/25_algorithms/stable_partition/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/stable_partition/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 // std::stable_partition is not freestanding.
 // { dg-require-effective-target hosted }
diff --git a/libstdc++-v3/testsuite/25_algorithms/stable_sort/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/stable_sort/constrained.cc
index 68b9d5b8b75..f24e810963b 100644
--- a/libstdc++-v3/testsuite/25_algorithms/stable_sort/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/stable_sort/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 // { dg-require-cstdint "" }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/swap/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/swap/constexpr.cc
index 9259c06fa5e..aad91d1a876 100644
--- a/libstdc++-v3/testsuite/25_algorithms/swap/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/swap/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 
diff --git a/libstdc++-v3/testsuite/25_algorithms/swap_ranges/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/swap_ranges/constexpr.cc
index b2f25e1e6ee..78e1fe529df 100644
--- a/libstdc++-v3/testsuite/25_algorithms/swap_ranges/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/swap_ranges/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/swap_ranges/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/swap_ranges/constrained.cc
index c79e783f33f..aea3a66fad5 100644
--- a/libstdc++-v3/testsuite/25_algorithms/swap_ranges/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/swap_ranges/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/transform/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/transform/constexpr.cc
index bcd313543ea..47ba3c6c9da 100644
--- a/libstdc++-v3/testsuite/25_algorithms/transform/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/transform/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/transform/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/transform/constrained.cc
index 377fd435feb..73a584a7983 100644
--- a/libstdc++-v3/testsuite/25_algorithms/transform/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/transform/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <functional>
diff --git a/libstdc++-v3/testsuite/25_algorithms/unique/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/unique/constexpr.cc
index 31c12627b90..29545c2c407 100644
--- a/libstdc++-v3/testsuite/25_algorithms/unique/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/unique/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/unique/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/unique/constrained.cc
index 09e855e86c2..d015e3da428 100644
--- a/libstdc++-v3/testsuite/25_algorithms/unique/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/unique/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <list>
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/unique_copy/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/unique_copy/constexpr.cc
index 324dfee6b27..71d5860e3e6 100644
--- a/libstdc++-v3/testsuite/25_algorithms/unique_copy/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/unique_copy/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/unique_copy/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/unique_copy/constrained.cc
index 388fc27b23a..e2dd6c16b9b 100644
--- a/libstdc++-v3/testsuite/25_algorithms/unique_copy/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/unique_copy/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/upper_bound/constexpr.cc b/libstdc++-v3/testsuite/25_algorithms/upper_bound/constexpr.cc
index 88d45f6dee1..09fa9444e6d 100644
--- a/libstdc++-v3/testsuite/25_algorithms/upper_bound/constexpr.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/upper_bound/constexpr.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 
 #include <algorithm>
 #include <array>
diff --git a/libstdc++-v3/testsuite/25_algorithms/upper_bound/constrained.cc b/libstdc++-v3/testsuite/25_algorithms/upper_bound/constrained.cc
index 7c0acc81995..7a8710a776d 100644
--- a/libstdc++-v3/testsuite/25_algorithms/upper_bound/constrained.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/upper_bound/constrained.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do run { target c++2a } }
+// { dg-do run { target c++20 } }
 
 #include <algorithm>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc b/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc
index 577fbfebb8a..6c39732b652 100644
--- a/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // { dg-require-debug-mode { } }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc b/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc
index 0774c17d0cf..133265a8912 100644
--- a/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // { dg-require-debug-mode { } }
 
 #include <algorithm>
diff --git a/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc b/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc
index 31bb9c382cd..9b6ce3fa1f0 100644
--- a/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc
@@ -15,8 +15,7 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-options "-std=gnu++2a" }
-// { dg-do compile { target c++2a } }
+// { dg-do compile { target c++20 } }
 // { dg-require-debug-mode { } }
 
 #include <algorithm>
-- 
2.41.0