libstdc++-v3/ChangeLog

   1 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * libsupc++/eh_ptr.cc (_GLIBCXX_EH_PTR_RELOPS_COMPAT): Define
   4         new macro.
   5         * libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Check new
   6         macro instead of _GLIBCXX_EH_PTR_COMPAT.
   7         (operator==): Likewise.
   8
   9 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
  10
  11         PR libstdc++/99058
  12         * doc/xml/manual/status_cxx2011.xml: Document when support
  13         became stable.
  14         * doc/xml/manual/status_cxx2014.xml: Likewise.
  15         * doc/xml/manual/status_cxx2017.xml: Likewise.
  16         * doc/html/manual/status.html: Regenerate.
  17
  18 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
  19
  20         PR libstdc++/88881
  21         * src/c++17/fs_ops.cc (fs::status): Re-enable workaround.
  22
  23 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
  24
  25         * src/c++17/fs_ops.cc (fs::create_hard_link, fs::equivalent)
  26         (fs::remove): Use std::system_category() for error codes from
  27         GetLastError().
  28         * src/filesystem/ops.cc (fs::create_hard_link, fs::remove):
  29         Likewise.
  30
  31 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
  32
  33         * testsuite/27_io/filesystem/operations/proximate.cc: Fix typo
  34         in __MINGW32__ macro name.
  35         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
  36         * testsuite/27_io/filesystem/path/generation/proximate.cc:
  37         Likewise.
  38         * testsuite/27_io/filesystem/path/generation/relative.cc:
  39         Likewise.
  40         * testsuite/util/testsuite_fs.h: Likewise.
  41
  42 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
  43
  44         * include/bits/stl_tree.h
  45         (__has_is_transparent, __has_is_transparent_t): Move...
  46         * include/bits/stl_function.h: ...here.
  47         * include/bits/hashtable_policy.h (_Hash_code_base<>::_M_hash_code_tr): New..
  48         (_Hashtable_base<>::_M_equals_tr): New.
  49         * include/bits/hashtable.h (_Hashtable<>::_M_find_tr, _Hashtable<>::_M_count_tr,
  50         _Hashtable<>::_M_equal_range_tr): New member function templates to perform
  51         heterogeneous lookup.
  52         (_Hashtable<>::_M_find_before_node_tr): New.
  53         (_Hashtable<>::_M_find_node_tr): New.
  54         * include/bits/unordered_map.h (unordered_map::find<>, unordered_map::count<>,
  55         unordered_map::contains<>, unordered_map::equal_range<>): New member function
  56         templates to perform heterogeneous lookup.
  57         (unordered_multimap::find<>, unordered_multimap::count<>,
  58         unordered_multimap::contains<>, unordered_multimap::equal_range<>): Likewise.
  59         * include/bits/unordered_set.h  (unordered_set::find<>, unordered_set::count<>,
  60         unordered_set::contains<>, unordered_set::equal_range<>): Likewise.
  61         (unordered_multiset::find<>, unordered_multiset::count<>,
  62         unordered_multiset::contains<>, unordered_multiset::equal_range<>): Likewise.
  63         * include/debug/unordered_map
  64         (unordered_map::find<>, unordered_map::equal_range<>): Likewise.
  65         (unordered_multimap::find<>, unordered_multimap::equal_range<>): Likewise.
  66         * include/debug/unordered_set
  67         (unordered_set::find<>, unordered_set::equal_range<>): Likewise.
  68         (unordered_multiset::find<>, unordered_multiset::equal_range<>): Likewise.
  69         * testsuite/23_containers/unordered_map/operations/1.cc: New test.
  70         * testsuite/23_containers/unordered_multimap/operations/1.cc: New test.
  71         * testsuite/23_containers/unordered_multiset/operations/1.cc: New test.
  72         * testsuite/23_containers/unordered_set/operations/1.cc: New test.
  73
  74 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
  75
  76         * include/bits/stl_deque.h
  77         (std::operator-(deque::iterator, deque::iterator)): Replace if/then with
  78         a null pointer test.
  79
  80 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
  81
  82         * testsuite/27_io/filesystem/operations/remove_all.cc: Remove
  83         test directory after making it writable again.
  84         * testsuite/experimental/filesystem/operations/remove_all.cc:
  85         Likewise.
  86
  87 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
  88
  89         PR libstdc++/99021
  90         * include/std/coroutine (coroutine_handle<P>::from_address): Add
  91         noexcept.
  92
  93 2021-02-09  Vladimir Vishnevsky  <vv.os.swe@gmail.com>
  94
  95         * include/ext/stdio_sync_filebuf.h: Remove unused <unistd.h>.
  96         * src/c++17/fs_ops.cc (fs::permissions): Qualify mode_t.
  97
  98 2021-02-09  Jakub Jelinek  <jakub@redhat.com>
  99
 100         PR middle-end/98465
 101         * include/bits/basic_string.tcc (basic_string::_M_replace): When __s
 102         points to the characters moved by earlier _S_move, compute the source
 103         address using expression based on the __p pointer rather than __s
 104         pointer.
 105
 106 2021-02-03  Jonathan Wakely  <jwakely@redhat.com>
 107
 108         * testsuite/19_diagnostics/error_code/operators/not_equal.cc:
 109         Add comparison with same category and different values.
 110         * testsuite/19_diagnostics/error_code/operators/less.cc:
 111         Likewise. Fix comparison involving different categories.
 112         * testsuite/19_diagnostics/error_code/operators/three_way.cc:
 113         Likewise.
 114         * testsuite/19_diagnostics/error_condition/operators/less.cc:
 115         Add comment.
 116         * testsuite/19_diagnostics/error_condition/operators/three_way.cc:
 117         Likewise.
 118
 119 2021-02-03  yaozhongxiao  <yaozhongxiao@linux.alibaba.com>
 120
 121         * include/experimental/bits/simd_neon.h: Replace repeated vpadd
 122         calls with a single vaddv for aarch64.
 123
 124 2021-02-03  Matthias Kretz  <kretz@kde.org>
 125
 126         * testsuite/Makefile.am: Warn about the workaround. Add
 127         -fno-tree-vrp to CXXFLAGS passed to the check_simd script.
 128         Improve initial user feedback from make check-simd.
 129         * testsuite/Makefile.in: Regenerated.
 130
 131 2021-02-03  Matthias Kretz  <kretz@kde.org>
 132
 133         * include/experimental/bits/simd.h: Add __detail::_Minimum and
 134         __detail::_Maximum to use them as _BinaryOperation to _S_reduce.
 135         Add hmin and hmax overloads for simd and const_where_expression.
 136         * include/experimental/bits/simd_scalar.h
 137         (_SimdImplScalar::_S_reduce): Make unused _BinaryOperation
 138         parameter const-ref to allow calling _S_reduce with an rvalue.
 139         * testsuite/experimental/simd/tests/reductions.cc: Add tests for
 140         hmin and hmax. Since the compiler statically determined that all
 141         tests pass, repeat the test after a call to make_value_unknown.
 142
 143 2021-02-03  Matthias Kretz  <kretz@kde.org>
 144
 145         * testsuite/experimental/simd/tests/bits/verify.h (verify): Add
 146         instruction pointer data member. Ensure that the `if (m_failed)`
 147         branch is always inlined into the calling code. The body of the
 148         conditional can still be a function call. Move the get_ip call
 149         into the verify ctor to simplify the ctor calls.
 150         (COMPARE): Don't mention the use of all_of for reduction of a
 151         simd_mask. It only distracts from the real issue.
 152
 153 2021-02-03  Matthias Kretz  <kretz@kde.org>
 154
 155         * testsuite/experimental/simd/driver.sh: Abstract reading test
 156         options into read_src_option function. Read skip, only,
 157         expensive, and xfail via read_src_option. Add timeout and
 158         timeout-factor options and adjust timeout variable accordingly.
 159         * testsuite/experimental/simd/tests/loadstore.cc: Set
 160         timeout-factor 2.
 161
 162 2021-02-03  Matthias Kretz  <kretz@kde.org>
 163
 164         * testsuite/experimental/simd/driver.sh: When handling the pipe
 165         to log (and on verbose to stdout) count the lines. If it exceeds
 166         1000 log the issue and exit 125, which is then handled as a
 167         failure.
 168
 169 2021-02-03  Matthias Kretz  <kretz@kde.org>
 170
 171         * testsuite/experimental/simd/tests/hypot3_fma.cc: Add skip:
 172         markup for long double on powerpc64*.
 173
 174 2021-02-03  Matthias Kretz  <kretz@kde.org>
 175
 176         * include/experimental/bits/simd.h: Add __have_power10vec
 177         conditional on _ARCH_PWR10.
 178         * include/experimental/bits/simd_builtin.h: Forward declare
 179         _MaskImplPpc and use it as _MaskImpl when __ALTIVEC__ is
 180         defined.
 181         (_MaskImplBuiltin::_S_some_of): Call _S_popcount from the
 182         _SuperImpl for optimizations and correctness.
 183         * include/experimental/bits/simd_ppc.h: Add _MaskImplPpc.
 184         (_MaskImplPpc::_S_popcount): Implement via vec_cntm for POWER10.
 185         Otherwise, for >=int use -vec_sums divided by a sizeof factor.
 186         For <int use -vec_sums(vec_sum4s(...)) to sum all mask entries.
 187
 188 2021-02-03  Matthias Kretz  <kretz@kde.org>
 189
 190         * testsuite/experimental/simd/driver.sh: Remove executable on
 191         SIGINT. Process compiler and test executable output: In verbose
 192         mode print messages immediately, limited to 1000 lines and
 193         breaking long lines to below $COLUMNS (or 1024 if not set).
 194         Communicating the exit status of the compiler / test with the
 195         necessary pipe is done via a message through stdout/-in.
 196
 197 2021-02-03  Matthias Kretz  <kretz@kde.org>
 198
 199         * testsuite/Makefile.am: Ensure .simd.summary is empty before
 200         collecting a new summary.
 201         * testsuite/Makefile.in: Regenerate.
 202
 203 2021-02-03  Matthias Kretz  <kretz@kde.org>
 204
 205         * testsuite/experimental/simd/generate_makefile.sh: Use
 206         different variables internally than documented for user
 207         overrides. This makes internal append/prepend work as intended.
 208
 209 2021-02-03  Matthias Kretz  <kretz@kde.org>
 210
 211         * testsuite/experimental/simd/driver.sh (verify_test): Print
 212         test output on run xfail. Do not repeat lines from the log that
 213         were already printed on stdout.
 214         (test_selector): Make the compiler flags pattern usable as a
 215         substring selector.
 216         (toplevel): Trap on SIGINT and remove the log and sum files.
 217         Call timout with --foreground to quickly terminate on SIGINT.
 218         * testsuite/experimental/simd/generate_makefile.sh: Simplify run
 219         targets via target patterns. Default DRIVEROPTS to -v for run
 220         targets. Remove log and sum files after completion of the run
 221         target (so that it's always recompiled).
 222         Place help text into text file for reasonable 'make help'
 223         performance.
 224
 225 2021-02-03  Matthias Kretz  <kretz@kde.org>
 226
 227         * include/experimental/bits/simd.h: Remove unnecessary static
 228         assertion. Allow sizeof(8) integer __intrinsic_type to enable
 229         the necessary mask type.
 230
 231 2021-02-03  Matthias Kretz  <kretz@kde.org>
 232
 233         * include/experimental/bits/simd.h: Let __intrinsic_type<long
 234         double, N> be valid if sizeof(long double) == sizeof(double) and
 235         use a __vector double as member type.
 236
 237 2021-02-03  Matthias Kretz  <kretz@kde.org>
 238
 239         * include/experimental/bits/simd.h (__is_intrinsic_type): New
 240         internal type trait. Alias for __is_vector_type on x86.
 241         (_VectorTraitsImpl): Enable for __intrinsic_type in addition for
 242         __vector_type.
 243         (__intrin_bitcast): Allow casting to & from vector & intrinsic
 244         types.
 245         (__intrinsic_type): Explicitly specialize for NEON intrinsic
 246         vector types.
 247
 248 2021-02-03  Matthias Kretz  <kretz@kde.org>
 249
 250         * testsuite/experimental/simd/driver.sh: Implement skip, only,
 251         expensive, and xfail markers. They can select on type, ABI tag
 252         subset number, target-triplet, and compiler flags.
 253         * testsuite/experimental/simd/generate_makefile.sh: The summary
 254         now includes lines for unexpected passes and expected failures.
 255         If the skip or only markers are only conditional on the type, do
 256         not generate rules for those types.
 257         * testsuite/experimental/simd/tests/abs.cc: Mark test expensive
 258         for ABI tag subsets 1-9.
 259         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
 260         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
 261         * testsuite/experimental/simd/tests/casts.cc: Ditto.
 262         * testsuite/experimental/simd/tests/generator.cc: Ditto.
 263         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
 264         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
 265         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
 266         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
 267         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
 268         * testsuite/experimental/simd/tests/mask_loadstore.cc: Ditto.
 269         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
 270         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
 271         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
 272         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
 273         * testsuite/experimental/simd/tests/operators.cc: Ditto.
 274         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
 275         * testsuite/experimental/simd/tests/simd.cc: Ditto.
 276         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
 277         * testsuite/experimental/simd/tests/splits.cc: Ditto.
 278         * testsuite/experimental/simd/tests/where.cc: Ditto.
 279         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto. In
 280         addition replace "test only floattypes" marker by unconditional
 281         "float|double|ldouble" only marker.
 282         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
 283         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
 284         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
 285         Ditto.
 286         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
 287         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
 288         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
 289         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
 290         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
 291         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
 292         * testsuite/experimental/simd/tests/sincos.cc: Ditto. In
 293         addition, xfail on run because the reference data is missing.
 294
 295 2021-02-02  Jonathan Wakely  <jwakely@redhat.com>
 296
 297         * doc/xml/manual/status_cxx2011.xml: Remove stray table cell.
 298         * doc/xml/manual/status_cxx2014.xml: Likewise.
 299         * doc/xml/manual/status_cxx2017.xml: Likewise.
 300         * doc/html/manual/status.html: Regenerate.
 301
 302 2021-02-01  François Dumont  <fdumont@gcc.gnu.org>
 303
 304         PR libstdc++/70303
 305         * include/bits/stl_deque.h (std::deque<>::operator-(iterator, iterator)):
 306         Return 0 if both iterators are value-initialized.
 307         * testsuite/23_containers/deque/70303.cc: New test.
 308         * testsuite/23_containers/vector/70303.cc: New test.
 309
 310 2021-02-01  Jonathan Wakely  <jwakely@redhat.com>
 311
 312         * doc/xml/manual/status_cxx2011.xml: Update std::call_once
 313         status.
 314         * doc/xml/manual/status_cxx2014.xml: Likewise.
 315         * doc/xml/manual/status_cxx2017.xml: Likewise. Update
 316         std::from_chars and std::to_chars status. Fix formatting.
 317         * doc/html/manual/status.html: Regenerate.
 318
 319 2021-01-28  Jonathan Wakely  <jwakely@redhat.com>
 320
 321         * include/experimental/bits/numeric_traits.h: Update copyright
 322         dates.
 323         * include/experimental/bits/simd.h: Likewise.
 324         * include/experimental/bits/simd_builtin.h: Likewise.
 325         * include/experimental/bits/simd_converter.h: Likewise.
 326         * include/experimental/bits/simd_detail.h: Likewise.
 327         * include/experimental/bits/simd_fixed_size.h: Likewise.
 328         * include/experimental/bits/simd_math.h: Likewise.
 329         * include/experimental/bits/simd_neon.h: Likewise.
 330         * include/experimental/bits/simd_ppc.h: Likewise.
 331         * include/experimental/bits/simd_scalar.h: Likewise.
 332         * include/experimental/bits/simd_x86.h: Likewise.
 333         * include/experimental/bits/simd_x86_conversions.h: Likewise.
 334         * include/experimental/simd: Likewise.
 335         * testsuite/experimental/simd/*: Likewise.
 336
 337 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
 338
 339         * doc/xml/manual/status_cxx2017.xml: Replace invalid entity.
 340         * doc/html/*: Regenerate.
 341
 342 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
 343
 344         * testsuite/experimental/simd/generate_makefile.sh: Use printf
 345         instead of echo when printing escape characters.
 346
 347 2021-01-27  Matthias Kretz  <kretz@kde.org>
 348
 349         * scripts/check_simd: New file. This script is called from the
 350         the check-simd target. It determines a set of compiler flags and
 351         simulator setups for calling generate_makefile.sh and passes the
 352         information back to the check-simd target, which recurses to the
 353         generated Makefiles.
 354         * scripts/create_testsuite_files: Remove files below simd/tests/
 355         from testsuite_files and place them in testsuite_files_simd.
 356         * testsuite/Makefile.am: Add testsuite_files_simd. Add
 357         check-simd target.
 358         * testsuite/Makefile.in: Regenerate.
 359         * testsuite/experimental/simd/driver.sh: New file. This script
 360         compiles and runs a given simd test, logging its output and
 361         status. It uses the timeout command to implement compile and
 362         test timeouts.
 363         * testsuite/experimental/simd/generate_makefile.sh: New file.
 364         This script generates a Makefile which uses driver.sh to compile
 365         and run the tests and collect the logs into a single log file.
 366         * testsuite/experimental/simd/tests/abs.cc: New file. Tests
 367         abs(simd).
 368         * testsuite/experimental/simd/tests/algorithms.cc: New file.
 369         Tests min/max(simd, simd).
 370         * testsuite/experimental/simd/tests/bits/conversions.h: New
 371         file. Contains functions to support tests involving conversions.
 372         * testsuite/experimental/simd/tests/bits/make_vec.h: New file.
 373         Support functions make_mask and make_vec.
 374         * testsuite/experimental/simd/tests/bits/mathreference.h: New
 375         file. Support functions to supply precomputed math function
 376         reference data.
 377         * testsuite/experimental/simd/tests/bits/metahelpers.h: New
 378         file. Support code for SFINAE testing.
 379         * testsuite/experimental/simd/tests/bits/simd_view.h: New file.
 380         * testsuite/experimental/simd/tests/bits/test_values.h: New
 381         file. Test functions to easily drive a test with simd objects
 382         initialized from a given list of values and a range of random
 383         values.
 384         * testsuite/experimental/simd/tests/bits/ulp.h: New file.
 385         Support code to determine the ULP distance of simd objects.
 386         * testsuite/experimental/simd/tests/bits/verify.h: New file.
 387         Test framework for COMPARE'ing simd objects and instantiating
 388         the test templates with value_type and ABI tag.
 389         * testsuite/experimental/simd/tests/broadcast.cc: New file. Test
 390         simd broadcasts.
 391         * testsuite/experimental/simd/tests/casts.cc: New file. Test
 392         simd casts.
 393         * testsuite/experimental/simd/tests/fpclassify.cc: New file.
 394         Test floating-point classification functions.
 395         * testsuite/experimental/simd/tests/frexp.cc: New file. Test
 396         frexp(simd).
 397         * testsuite/experimental/simd/tests/generator.cc: New file. Test
 398         simd generator constructor.
 399         * testsuite/experimental/simd/tests/hypot3_fma.cc: New file.
 400         Test 3-arg hypot(simd,simd,simd) and fma(simd,simd,sim).
 401         * testsuite/experimental/simd/tests/integer_operators.cc: New
 402         file. Test integer operators.
 403         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
 404         New file. Test ldexp(simd), scalbn(simd), scalbln(simd), and
 405         modf(simd).
 406         * testsuite/experimental/simd/tests/loadstore.cc: New file. Test
 407         (converting) simd loads and stores.
 408         * testsuite/experimental/simd/tests/logarithm.cc: New file. Test
 409         log*(simd).
 410         * testsuite/experimental/simd/tests/mask_broadcast.cc: New file.
 411         Test simd_mask broadcasts.
 412         * testsuite/experimental/simd/tests/mask_conversions.cc: New
 413         file. Test simd_mask conversions.
 414         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: New
 415         file. Test simd_mask implicit conversions.
 416         * testsuite/experimental/simd/tests/mask_loadstore.cc: New file.
 417         Test simd_mask loads and stores.
 418         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: New
 419         file. Test simd_mask operators convert as specified.
 420         * testsuite/experimental/simd/tests/mask_operators.cc: New file.
 421         Test simd_mask compares, subscripts, and negation.
 422         * testsuite/experimental/simd/tests/mask_reductions.cc: New
 423         file. Test simd_mask reductions.
 424         * testsuite/experimental/simd/tests/math_1arg.cc: New file. Test
 425         1-arg math functions on simd.
 426         * testsuite/experimental/simd/tests/math_2arg.cc: New file. Test
 427         2-arg math functions on simd.
 428         * testsuite/experimental/simd/tests/operator_cvt.cc: New file.
 429         Test implicit conversions on simd binary operators behave as
 430         specified.
 431         * testsuite/experimental/simd/tests/operators.cc: New file. Test
 432         simd compares, subscripts, not, unary minus, plus, minus,
 433         multiplies, divides, increment, and decrement.
 434         * testsuite/experimental/simd/tests/reductions.cc: New file.
 435         Test reduce(simd).
 436         * testsuite/experimental/simd/tests/remqo.cc: New file. Test
 437         remqo(simd).
 438         * testsuite/experimental/simd/tests/simd.cc: New file. Basic
 439         sanity checks of simd types.
 440         * testsuite/experimental/simd/tests/sincos.cc: New file. Test
 441         sin(simd) and cos(simd).
 442         * testsuite/experimental/simd/tests/split_concat.cc: New file.
 443         Test split(simd) and concat(simd, simd).
 444         * testsuite/experimental/simd/tests/splits.cc: New file. Test
 445         split(simd_mask).
 446         * testsuite/experimental/simd/tests/trigonometric.cc: New file.
 447         Test remaining trigonometric functions on simd.
 448         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: New
 449         file. Test trunc(simd), ceil(simd), and floor(simd).
 450         * testsuite/experimental/simd/tests/where.cc: New file. Test
 451         masked operations using where.
 452
 453 2021-01-27  Matthias Kretz  <kretz@kde.org>
 454
 455         * doc/xml/manual/status_cxx2017.xml: Add implementation status
 456         of the Parallelism TS 2. Document implementation-defined types
 457         and behavior.
 458         * include/Makefile.am: Add new headers.
 459         * include/Makefile.in: Regenerate.
 460         * include/experimental/simd: New file. New header for
 461         Parallelism TS 2.
 462         * include/experimental/bits/numeric_traits.h: New file.
 463         Implementation of P1841R1 using internal naming. Addition of
 464         missing IEC559 functionality query.
 465         * include/experimental/bits/simd.h: New file. Definition of the
 466         public simd interfaces and general implementation helpers.
 467         * include/experimental/bits/simd_builtin.h: New file.
 468         Implementation of the _VecBuiltin simd_abi.
 469         * include/experimental/bits/simd_converter.h: New file. Generic
 470         simd conversions.
 471         * include/experimental/bits/simd_detail.h: New file. Internal
 472         macros for the simd implementation.
 473         * include/experimental/bits/simd_fixed_size.h: New file. Simd
 474         fixed_size ABI specific implementations.
 475         * include/experimental/bits/simd_math.h: New file. Math
 476         overloads for simd.
 477         * include/experimental/bits/simd_neon.h: New file. Simd NEON
 478         specific implementations.
 479         * include/experimental/bits/simd_ppc.h: New file. Implement bit
 480         shifts to avoid invalid results for integral types smaller than
 481         int.
 482         * include/experimental/bits/simd_scalar.h: New file. Simd scalar
 483         ABI specific implementations.
 484         * include/experimental/bits/simd_x86.h: New file. Simd x86
 485         specific implementations.
 486         * include/experimental/bits/simd_x86_conversions.h: New file.
 487         x86 specific conversion optimizations. The conversion patterns
 488         work around missing conversion patterns in the compiler and
 489         should be removed as soon as PR85048 is resolved.
 490         * testsuite/experimental/simd/standard_abi_usable.cc: New file.
 491         Test that all (not all fixed_size<N>, though) standard simd and
 492         simd_mask types are usable.
 493         * testsuite/experimental/simd/standard_abi_usable_2.cc: New
 494         file. As above but with -ffast-math.
 495         * testsuite/libstdc++-dg/conformance.exp: Don't build simd tests
 496         from the standard test loop. Instead use
 497         check_vect_support_and_set_flags to build simd tests with the
 498         relevant machine flags.
 499
 500 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
 501
 502         PR libstdc++/66414
 503         * include/bits/string_view.tcc
 504         (basic_string_view::find(const CharT*, size_type, size_type)):
 505         Optimize.
 506
 507 2021-01-27  Paul Fee  <paul.f.fee@gmail.com>
 508
 509         * include/bits/basic_string.h (basic_string::contains): New
 510         member functions.
 511         * include/std/string_view (basic_string_view::contains):
 512         Likewise.
 513         * include/std/version (__cpp_lib_string_contains): Define.
 514         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
 515         Remove trailing whitespace.
 516         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
 517         Likewise.
 518         * testsuite/21_strings/basic_string/operations/contains/char/1.cc: New test.
 519         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc: New test.
 520         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc: New test.
 521         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: New test.
 522         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc: New test.
 523
 524 2021-01-21  Jonathan Wakely  <jwakely@redhat.com>
 525
 526         * src/c++17/Makefile.in: Regenerate.
 527
 528 2021-01-20  David Edelsohn  <dje.gcc@gmail.com>
 529
 530         * config/os/aix/ctype_inline.h (bool ctype<char>:: is): Cast
 531         _OBJ_DATA subscript to unsigned char. Add _THREAD_SAFE access to
 532         __lc_type.
 533         (const char* ctype<char>:: is): Same.
 534
 535 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
 536
 537         PR libstdc++/98725
 538         * testsuite/20_util/unique_ptr/io/lwg2948.cc:  Do not try to
 539         write to a wide character stream if wide character support is
 540         disabled in the library.
 541
 542 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
 543
 544         * testsuite/27_io/basic_stringstream/cons/char/1.cc: Use
 545         stringbuf not wstringbuf.
 546
 547 2021-01-18  Jakub Jelinek  <jakub@redhat.com>
 548
 549         PR debug/98708
 550         * src/c++11/Makefile.am (cxx11-ios_failure-lt.s, cxx11-ios_failure.s):
 551         Compile with -gno-as-loc-support.
 552         * src/c++11/Makefile.in: Regenerated.
 553
 554 2021-01-16  H.J. Lu  <hjl.tools@gmail.com>
 555
 556         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc:
 557         Add -fcf-protection=none to -march=i486.
 558
 559 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
 560
 561         * testsuite/23_containers/deque/debug/98466.cc: Make it pre-C++11
 562         compliant.
 563
 564 2021-01-14  Alexandre Oliva  <oliva@adacore.com>
 565
 566         * testsuite/30_threads/future/members/poll.cc: Calibrate
 567         iteration count.
 568
 569 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
 570
 571         PR libstdc++/98466
 572         * include/bits/hashtable_policy.h (_Node_iterator_base()): Set _M_cur to nullptr.
 573         (_Node_iterator()): Make default.
 574         (_Node_const_iterator()): Make default.
 575         * include/debug/macros.h (__glibcxx_check_erae_range_after): Add _M_singular
 576         iterator checks.
 577         * include/debug/safe_iterator.h
 578         (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Accept if both iterator are value initialized.
 579         * include/debug/safe_local_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS):
 580         Likewise.
 581         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range): Add
 582         _M_singular checks on input iterators.
 583         * src/c++11/debug.cc (_Safe_iterator_base::_M_can_compare): Remove _M_singular
 584         checks.
 585         * testsuite/23_containers/deque/debug/98466.cc: New test.
 586         * testsuite/23_containers/unordered_map/debug/98466.cc: New test.
 587
 588 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
 589
 590         PR libstdc++/98471
 591         * include/bits/fs_path.h (__throw_conversion_error): New
 592         function to throw or abort on character conversion errors.
 593         (__wstr_from_utf8): Move definition after filesystem_error has
 594         been defined. Use __throw_conversion_error.
 595         (path::_S_convert<_EcharT>): Use __throw_conversion_error.
 596         (path::_S_str_convert<_CharT, _Traits, _Allocator>): Likewise.
 597         (path::u8string): Likewise.
 598
 599 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
 600
 601         * include/std/barrier: Update copyright years. Fix whitespace.
 602         * include/std/version: Fix whitespace.
 603         * testsuite/30_threads/barrier/1.cc: Update copyright years.
 604         * testsuite/30_threads/barrier/2.cc: Likewise.
 605         * testsuite/30_threads/barrier/arrive.cc: Likewise.
 606         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
 607         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
 608         * testsuite/30_threads/barrier/completion.cc: Likewise.
 609
 610 2021-01-13  Jonathan Wakely  <jwakely@redhat.com>
 611
 612         * doc/doxygen/user.cfg.in (INPUT): Remove include/debug/array.
 613
 614 2021-01-10  David Edelsohn  <dje.gcc@gmail.com>
 615
 616         PR libstdc++/98613
 617         * testsuite/ext/vstring/cons/moveable.cc: Suppress false positive
 618         warning.
 619         * testsuite/ext/vstring/modifiers/assign/move_assign.cc: Same.
 620
 621 2021-01-08  Olivier Hainque  <hainque@adacore.com>
 622
 623         * testsuite/20_util/bind/ref_neg.cc: Tweak the
 624         dg-prune-output regex for out-of-build-tree contexts.
 625
 626 2021-01-07  Thomas Rodgers  <trodgers@redhat.com>
 627
 628         * doc/doxygen/user.cfg.in: Add new header.
 629         * include/Makefile.am (std_headers): likewise.
 630         * include/Makefile.in: Regenerate.
 631         * include/precompiled/stdc++.h: Add new header.
 632         * include/std/barrier: New file.
 633         * include/std/version: Add __cpp_lib_barrier feature test macro.
 634         * testsuite/30_threads/barrier/1.cc: New test.
 635         * testsuite/30_threads/barrier/2.cc: Likewise.
 636         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
 637         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
 638         * testsuite/30_threads/barrier/arrive.cc: Likewise.
 639         * testsuite/30_threads/barrier/completion.cc: Likewise.
 640
 641 2021-01-07  Patrick Palka  <ppalka@redhat.com>
 642
 643         PR libstdc++/98384
 644         * testsuite/20_util/to_chars/long_double.cc: Use nexttowardl
 645         instead of the non-standard nextupl and nextdownl.
 646
 647 2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>
 648
 649         * configure: Re-generate.
 650
 651 2021-01-05  Ed Smith-Rowland  <3dw4rd@verizon.net>
 652
 653         * include/precompiled/stdc++.h: Add <source_location> to C++20 section.
 654
 655 2021-01-01  Jakub Jelinek  <jakub@redhat.com>
 656
 657         * ChangeLog-2020: Rotate ChangeLog.  New file.
 658
 659 \f
 660 Copyright (C) 2021 Free Software Foundation, Inc.
 661
 662 Copying and distribution of this file, with or without modification,
 663 are permitted in any medium without royalty provided the copyright
 664 notice and this notice are preserved.