gcc/ChangeLog

   1 2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>
   2
   3         * config/vax/vax.md (cc): Remove mode attribute.
   4         (subst_<cc>, subst_f<cc>): Rename to...
   5         (subst_<mode>, subst_f<VAXccnz:mode>): ... these respectively.
   6         (*cbranch<VAXint:mode>4_<VAXcc:mode>): Update for `cc' removal.
   7         (*cbranch<VAXfp:mode>4_<VAXccnz:mode>): Likewise.
   8         (*branch_<mode>, *branch_<mode>_reversed): Likewise.
   9
  10 2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>
  11
  12         * config/vax/vax.md (subst_f<cc>): Add mode to operands and
  13         `const_double_zero'.
  14
  15 2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>
  16
  17         * config/pdp11/pdp11.md (PDPfp): New mode iterator.
  18         (fcc_cc, fcc_ccnz): Use it.  Add mode to `const_double_zero' and
  19         operands.
  20
  21 2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>
  22
  23         * genemit.c (gen_exp) <CONST_DOUBLE>: Handle `const_double_zero'
  24         rtx.
  25         * read-rtl.c (rtx_reader::read_rtx_code): Handle machine mode
  26         with `const_double_zero'.
  27         * doc/rtl.texi (Constant Expression Types): Document it.
  28
  29 2021-01-09  Jakub Jelinek  <jakub@redhat.com>
  30
  31         PR c++/98556
  32         * tree-cfg.c (verify_gimple_assign_binary): Allow lhs of
  33         POINTER_DIFF_EXPR to be any integral type.
  34
  35 2021-01-09  Jakub Jelinek  <jakub@redhat.com>
  36
  37         PR rtl-optimization/98603
  38         * function.c (instantiate_virtual_regs_in_insn): For asm goto
  39         with impossible constraints, drop all SETs, CLOBBERs, drop PARALLEL
  40         if any, set ASM_OPERANDS mode to VOIDmode and change
  41         ASM_OPERANDS_OUTPUT_CONSTRAINT and ASM_OPERANDS_OUTPUT_IDX.
  42
  43 2021-01-09  Alexandre Oliva  <oliva@gnu.org>
  44
  45         PR debug/97714
  46         * final.c (notice_source_line): Narrow down the condition to
  47         skip a line-0 marker.
  48
  49 2021-01-08  Sergei Trofimovich  <siarheit@google.com>
  50
  51         * ipa-modref.c (merge_call_side_effects): Fix
  52         linebreak split by reordering two print calls.
  53
  54 2021-01-08  Ilya Leoshkevich  <iii@linux.ibm.com>
  55
  56         * config/s390/vector.md (*tf_to_fprx2_0): Rename from
  57         "*mov_tf_to_fprx2_0" for consistency, fix constraint.
  58         (*tf_to_fprx2_1): Rename from "*mov_tf_to_fprx2_1" for
  59         consistency, fix constraint.
  60
  61 2021-01-08  Ilya Leoshkevich  <iii@linux.ibm.com>
  62
  63         * config/s390/s390-c.c (s390_def_or_undef_macro): Accept
  64         callables instead of mask values.
  65         (struct target_flag_set_p): New predicate.
  66         (s390_cpu_cpp_builtins_internal): Define or undefine
  67         __LONG_DOUBLE_VX__ macro.
  68
  69 2021-01-08  H.J. Lu  <hjl.tools@gmail.com>
  70
  71         PR target/98482
  72         * config/i386/i386.c (x86_function_profiler): Use R10 and R11
  73         to call mcount in large model with PIC for NO_PROFILE_COUNTERS
  74         targets.
  75
  76 2021-01-08  Richard Biener  <rguenther@suse.de>
  77
  78         * tree-ssa-sccvn.c (pass_fre::execute): Reset the SCEV hash table.
  79
  80 2021-01-08  Richard Biener  <rguenther@suse.de>
  81
  82         * tree-vect-slp.c (scalar_stmts_to_slp_tree_map_t): Fix.
  83         (vect_build_slp_tree): On cache hit release the matched
  84         scalar stmts vector.
  85         * tree-vect-stmts.c (vectorizable_store): Properly free
  86         vec_oprnds before possibly gathering them again.
  87
  88 2021-01-08  Richard Biener  <rguenther@suse.de>
  89
  90         PR tree-optimization/98544
  91         * tree-vect-slp.c (vect_optimize_slp): Always materialize
  92         permutes at a permute node.
  93
  94 2021-01-08  H.J. Lu  <hjl.tools@gmail.com>
  95
  96         PR target/98482
  97         * config/i386/i386.c (x86_function_profiler): Use R10 to call
  98         mcount in large model.  Sorry for large model with PIC.
  99
 100 2021-01-08  Jakub Jelinek  <jakub@redhat.com>
 101
 102         PR target/98585
 103         * config/i386/i386.opt (ix86_cmodel, ix86_incoming_stack_boundary_arg,
 104         ix86_pmode, ix86_preferred_stack_boundary_arg, ix86_regparm,
 105         ix86_veclibabi_type): Remove x_ prefix, use TargetVariable instead of
 106         TargetSave and initialize for variables with enum types.
 107         (mfentry, mstack-protector-guard-reg=, mstack-protector-guard-offset=,
 108         mstack-protector-guard-symbol=): Add Save.
 109         * config/i386/i386-options.c (ix86_function_specific_save,
 110         ix86_function_specific_restore): Don't save or restore x_ix86_cmodel,
 111         x_ix86_incoming_stack_boundary_arg, x_ix86_pmode,
 112         x_ix86_preferred_stack_boundary_arg, x_ix86_regparm,
 113         x_ix86_veclibabi_type.
 114
 115 2021-01-08  Richard Sandiford  <richard.sandiford@arm.com>
 116
 117         * config/aarch64/aarch64-sve.md (*cnot<mode>): Extend from
 118         SVE_FULL_I to SVE_I.
 119         (*cond_cnot<mode>_2, *cond_cnot<mode>_any): Likewise.
 120
 121 2021-01-08  Richard Sandiford  <richard.sandiford@arm.com>
 122
 123         * config/aarch64/aarch64-sve.md (*cond_uxt<mode>_2): Extend from
 124         SVE_FULL_I to SVE_I.
 125         (*cond_uxt<mode>_any): Likewise.
 126
 127 2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 128
 129         * config/aarch64/iterators.md (Vwhalf): New iterator.
 130         * config/aarch64/aarch64-simd.md (aarch64_<sur>adalp<mode>_3):
 131         Rename to...
 132         (aarch64_<sur>adalp<mode>): ... This.  Make more
 133         builtin-friendly.
 134         (<sur>sadv16qi): Adjust callsite of the above.
 135         * config/aarch64/aarch64-simd-builtins.def (sadalp, uadalp): New
 136         builtins.
 137         * config/aarch64/arm_neon.h (vpadal_s8): Reimplement using
 138         builtins.
 139         (vpadal_s16): Likewise.
 140         (vpadal_u8): Likewise.
 141         (vpadal_u16): Likewise.
 142         (vpadalq_s8): Likewise.
 143         (vpadalq_s16): Likewise.
 144         (vpadalq_s32): Likewise.
 145         (vpadalq_u8): Likewise.
 146         (vpadalq_u16): Likewise.
 147         (vpadalq_u32): Likewise.
 148
 149 2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 150
 151         * config/aarch64/aarch64-simd.md (aarch64_<su>abd<mode>_3):
 152         Rename to...
 153         (aarch64_<su>abd<mode>): ... This.
 154         (<sur>sadv16qi): Adjust callsite of the above.
 155         * config/aarch64/aarch64-simd-builtins.def (sabd, uabd): Define
 156         builtins.
 157         * config/aarch64/arm_neon.h (vabd_s8): Reimplement using
 158         builtin.
 159         (vabd_s16): Likewise.
 160         (vabd_s32): Likewise.
 161         (vabd_u8): Likewise.
 162         (vabd_u16): Likewise.
 163         (vabd_u32): Likewise.
 164         (vabdq_s8): Likewise.
 165         (vabdq_s16): Likewise.
 166         (vabdq_s32): Likewise.
 167         (vabdq_u8): Likewise.
 168         (vabdq_u16): Likewise.
 169         (vabdq_u32): Likewise.
 170
 171 2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 172
 173         * config/aarch64/aarch64-simd-builtins.def (saba, uaba): Define
 174         builtins.
 175         * config/aarch64/arm_neon.h (vaba_s8): Implement using builtin.
 176         (vaba_s16): Likewise.
 177         (vaba_s32): Likewise.
 178         (vaba_u8): Likewise.
 179         (vaba_u16): Likewise.
 180         (vaba_u32): Likewise.
 181         (vabaq_s8): Likewise.
 182         (vabaq_s16): Likewise.
 183         (vabaq_s32): Likewise.
 184         (vabaq_u8): Likewise.
 185         (vabaq_u16): Likewise.
 186         (vabaq_u32): Likewise.
 187
 188 2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 189
 190         * config/aarch64/aarch64-simd.md (aba<mode>_3): Rename to...
 191         (aarch64_<su>aba<mode>): ... This.  Handle uaba as well.
 192         Change RTL pattern to match.
 193
 194 2021-01-08  Kito Cheng  <kito.cheng@sifive.com>
 195
 196         * common/config/riscv/riscv-common.c (riscv_current_subset_list): New.
 197         * config/riscv/riscv-c.c (riscv-subset.h): New.
 198         (INCLUDE_STRING): Define.
 199         (riscv_cpu_cpp_builtins): Add new style architecture extension
 200         test macros.
 201         * config/riscv/riscv-subset.h (riscv_subset_list::begin): New.
 202         (riscv_subset_list::end): New.
 203         (riscv_current_subset_list): New.
 204
 205 2021-01-08  Kito Cheng  <kito.cheng@sifive.com>
 206
 207         * common/config/riscv/riscv-common.c (RISCV_DONT_CARE_VERSION):
 208         Move to riscv-subset.h.
 209         (struct riscv_subset_t): Ditto.
 210         (class riscv_subset_list): Ditto.
 211         * config/riscv/riscv-subset.h (RISCV_DONT_CARE_VERSION): Move
 212         from riscv-common.c.
 213         (struct riscv_subset_t): Ditto.
 214         (class riscv_subset_list): Ditto.
 215         * config/riscv/t-riscv ($(common_out_file)): Add file
 216         dependency.
 217
 218 2021-01-07  Jakub Jelinek  <jakub@redhat.com>
 219
 220         PR target/98567
 221         * config/i386/i386.md (*bmi_blsi_<mode>_cmp, *bmi_blsi_<mode>_ccno):
 222         New define_insn patterns.
 223
 224 2021-01-07  Richard Sandiford  <richard.sandiford@arm.com>
 225
 226         * config/aarch64/aarch64-sve.md (@cond_<SVE_INT_UNARY:optab><mode>)
 227         (*cond_<SVE_INT_UNARY:optab><mode>_2): Extend from SVE_FULL_I to SVE_I.
 228         (*cond_<SVE_INT_UNARY:optab><mode>_any): Likewise.
 229
 230 2021-01-07  Richard Sandiford  <richard.sandiford@arm.com>
 231
 232         PR tree-optimization/98560
 233         * internal-fn.def (IFN_VCONDU, IFN_VCONDEQ): Use type vec_cond.
 234         * internal-fn.c (vec_cond_mask_direct): Get the data mode from
 235         argument 1.
 236         (vec_cond_direct): Likewise argument 2.
 237         (vec_condu_direct, vec_condeq_direct): Delete.
 238         (expand_vect_cond_optab_fn): Rename to...
 239         (expand_vec_cond_optab_fn): ...this, replacing old macro.
 240         (expand_vec_condu_optab_fn, expand_vec_condeq_optab_fn): Delete.
 241         (expand_vect_cond_mask_optab_fn): Rename to...
 242         (expand_vec_cond_mask_optab_fn): ...this, replacing old macro.
 243         (direct_vec_cond_mask_optab_supported_p): Treat the optab as a
 244         convert optab.
 245         (direct_vec_cond_optab_supported_p): Likewise.
 246         (direct_vec_condu_optab_supported_p): Delete.
 247         (direct_vec_condeq_optab_supported_p): Delete.
 248         * gimple-isel.cc: Include internal-fn.h.
 249         (gimple_expand_vec_cond_expr): Check that IFN_VCONDEQ is supported
 250         before using it.
 251
 252 2021-01-07  Richard Sandiford  <richard.sandiford@arm.com>
 253
 254         PR tree-optimization/98560
 255         * gimple-isel.cc (gimple_expand_vec_cond_expr): If we fail to use
 256         IFN_VCOND{,U,EQ}, fall back on IFN_VCOND_MASK.
 257
 258 2021-01-07  Uroš Bizjak  <ubizjak@gmail.com>
 259
 260         * config/i386/i386.md (insn): Merge from plusminus_insn, shift_insn,
 261         rotate_insn and optab code attributes.
 262         Update all uses to merged code attribute.
 263         * config/i386/sse.md: Update all uses to merged code attribute.
 264         * config/i386/mmx.md: Update all uses to merged code attribute.
 265
 266 2021-01-07  Jakub Jelinek  <jakub@redhat.com>
 267
 268         PR tree-optimization/98568
 269         * gimple-ssa-store-merging.c (bswap_view_convert): New function.
 270         (bswap_replace): Use it.
 271
 272 2021-01-06  Vladimir N. Makarov  <vmakarov@redhat.com>
 273
 274         PR rtl-optimization/97978
 275         * lra-int.h (lra_hard_reg_split_p): New external.
 276         * lra.c (lra_hard_reg_split_p): New global.
 277         (lra): Set up lra_hard_reg_split_p after splitting a hard reg.
 278         * lra-assigns.c (lra_assign): Don't check allocation correctness
 279         after hard reg splitting.
 280
 281 2021-01-06  Martin Sebor  <msebor@redhat.com>
 282
 283         PR c++/98305
 284         * builtins.c (new_delete_mismatch_p): New overload.
 285         (new_delete_mismatch_p (tree, tree)): Call it.
 286
 287 2021-01-06  Alexandre Oliva  <oliva@adacore.com>
 288
 289         * Makefile.in (T_GLIMITS_H): New.
 290         (stmp-int-hdrs): Depend on it, use it.
 291         * config/t-vxworks (T_GLIMITS_H): Override it.
 292         (vxw-glimits.h): New.
 293
 294 2021-01-06  Richard Biener  <rguenther@suse.de>
 295
 296         PR tree-optimization/98513
 297         * value-range.cc (intersect_ranges): Compare the upper bounds
 298         for the expected relation.
 299
 300 2021-01-06  Gerald Pfeifer  <gerald@pfeifer.com>
 301
 302         Revert:
 303         2020-12-28  Gerald Pfeifer  <gerald@pfeifer.com>
 304
 305         * doc/standards.texi (HSAIL): Remove section.
 306
 307 2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>
 308
 309         * configure: Re-generate.
 310
 311 2021-01-05  Jakub Jelinek  <jakub@redhat.com>
 312
 313         * doc/invoke.texi (-std=c++20): Adjust for the publication of
 314         ISO 14882:2020 standard.
 315         * doc/standards.texi: Likewise.
 316
 317 2021-01-05  Jakub Jelinek  <jakub@redhat.com>
 318
 319         PR tree-optimization/94802
 320         * expr.h (maybe_optimize_sub_cmp_0): Declare.
 321         * expr.c: Include tree-pretty-print.h and flags.h.
 322         (maybe_optimize_sub_cmp_0): New function.
 323         (do_store_flag): Use it.
 324         * cfgexpand.c (expand_gimple_cond): Likewise.
 325
 326 2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>
 327
 328         * mux-utils.h (pointer_mux::m_ptr): Tweak description of contents.
 329         * rtlanal.c (simple_regno_set): Tweak description to clarify the
 330         RMW condition.
 331
 332 2021-01-05  Richard Biener  <rguenther@suse.de>
 333
 334         PR tree-optimization/98516
 335         * tree-vect-slp.c (vect_optimize_slp): Permute the incoming
 336         lanes when materializing on a VEC_PERM node.
 337         (vectorizable_slp_permutation): Dump the permute properly.
 338
 339 2021-01-05  Richard Biener  <rguenther@suse.de>
 340
 341         * tree-vect-slp.c (vect_slp_region): Move debug counter
 342         to cover individual subgraphs.
 343
 344 2021-01-05  Richard Biener  <rguenther@suse.de>
 345
 346         PR tree-optimization/98428
 347         * tree-vect-slp.c (vect_build_slp_tree_1): Properly reject
 348         vector lane extracts for loop vectorization.
 349
 350 2021-01-05  Jakub Jelinek  <jakub@redhat.com>
 351
 352         PR tree-optimization/98514
 353         * tree-ssa-reassoc.c (bb_rank): Change type from long * to
 354         int64_t *.
 355         (operand_rank): Change type from hash_map<tree, long> to
 356         hash_map<tree, int64_t>.
 357         (phi_rank): Change return type from long to int64_t.
 358         (loop_carried_phi): Change block_rank variable type from long to
 359         int64_t.
 360         (propagate_rank): Change return type, rank parameter type and
 361         op_rank variable type from long to int64_t.
 362         (find_operand_rank): Change return type from long to int64_t
 363         and change slot variable type from long * to int64_t *.
 364         (insert_operand_rank): Change rank parameter type from long to
 365         int64_t.
 366         (get_rank): Change return type and rank variable type from long to
 367         int64_t.  Use PRId64 instead of ld to print the rank.
 368         (init_reassoc): Change rank variable type from long to int64_t
 369         and adjust correspondingly bb_rank and operand_rank initialization.
 370
 371 2021-01-05  Jakub Jelinek  <jakub@redhat.com>
 372
 373         PR tree-optimization/96928
 374         * tree-ssa-phiopt.c (xor_replacement): New function.
 375         (tree_ssa_phiopt_worker): Call it.
 376
 377 2021-01-05  Jakub Jelinek  <jakub@redhat.com>
 378
 379         PR tree-optimization/96930
 380         * match.pd ((A / (1 << B)) -> (A >> B)): If A is extended
 381         from narrower value which has the same type as 1 << B, perform
 382         the right shift on the narrower value followed by extension.
 383
 384 2021-01-05  Jakub Jelinek  <jakub@redhat.com>
 385
 386         PR tree-optimization/96239
 387         * gimple-ssa-store-merging.c (maybe_optimize_vector_constructor): New
 388         function.
 389         (get_status_for_store_merging): Don't return BB_INVALID for blocks
 390         with potential bswap optimizable CONSTRUCTORs.
 391         (pass_store_merging::execute): Optimize vector CONSTRUCTORs with bswap
 392         if possible.
 393
 394 2021-01-05  Richard Biener  <rguenther@suse.de>
 395
 396         PR tree-optimization/98381
 397         * tree.c (vector_element_bits): Properly compute bool vector
 398         element size.
 399         * tree-vect-loop.c (vectorizable_live_operation): Properly
 400         compute the last lane bit offset.
 401
 402 2021-01-05  Uroš Bizjak  <ubizjak@gmail.com>
 403
 404         PR target/98522
 405         * config/i386/sse.md (sse_cvtps2pi): Redefine as define_insn_and_split.
 406         Clear the top 64 bytes of the input XMM register.
 407         (sse_cvttps2pi): Ditto.
 408
 409 2021-01-05  Uroš Bizjak  <ubizjak@gmail.com>
 410
 411         PR target/98521
 412         * config/i386/xopintrin.h (_mm256_cmov_si256): New.
 413
 414 2021-01-05  H.J. Lu  <hjl.tools@gmail.com>
 415
 416         PR target/98495
 417         * config/i386/xmmintrin.h (_mm_extract_pi16): Cast to unsigned
 418         short first.
 419
 420 2021-01-05  Claudiu Zissulescu  <claziss@synopsys.com>
 421
 422         * config/arc/arc.md (maddsidi4_split): Use ACC_REG_FIRST.
 423         (umaddsidi4_split): Likewise.
 424
 425 2021-01-05  liuhongt  <hongtao.liu@intel.com>
 426
 427         PR target/98461
 428         * config/i386/sse.md (*sse2_pmovskb_zexthisi): New
 429         define_insn_and_split for zero_extend of subreg HI of pmovskb
 430         result.
 431         (*sse2_pmovskb_zexthisi): Add new combine splitters for
 432         zero_extend of not of subreg HI of pmovskb result.
 433
 434 2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>
 435
 436         PR target/97269
 437         * explow.c (convert_memory_address_addr_space_1): Handle UNSPECs
 438         nested in CONSTs.
 439         * config/aarch64/aarch64.c (aarch64_expand_mov_immediate): Use
 440         convert_memory_address to convert symbolic immediates to ptr_mode
 441         before forcing them to memory.
 442
 443 2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>
 444
 445         PR rtl-optimization/97144
 446         * recog.c (constrain_operands): Initialize matching_operand
 447         for each alternative, rather than only doing it once.
 448
 449 2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>
 450
 451         PR rtl-optimization/98403
 452         * rtl-ssa/changes.cc (function_info::finalize_new_accesses): Explain
 453         why we don't remove call clobbers.
 454         (function_info::apply_changes_to_insn): Don't attempt to add
 455         call clobbers here.
 456
 457 2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>
 458
 459         PR tree-optimization/98371
 460         * tree-vect-loop.c (vect_reanalyze_as_main_loop): New function.
 461         (vect_analyze_loop): If an epilogue loop appears to be cheaper
 462         than the main loop, re-analyze it as a main loop before adopting
 463         it as a main loop.
 464
 465 2021-01-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 466
 467         PR c++/98316
 468         * configure.ac (NETLIBS): Determine using AX_LIB_SOCKET_NSL.
 469         * aclocal.m4, configure: Regenerate.
 470         * Makefile.in (NETLIBS): Define.
 471         (BACKEND): Remove $(CODYLIB).
 472
 473 2021-01-05  Jakub Jelinek  <jakub@redhat.com>
 474
 475         PR rtl-optimization/98334
 476         * simplify-rtx.c (simplify_context::simplify_binary_operation_1):
 477         Optimize (X - 1) * Y + Y to X * Y or (X + 1) * Y - Y to X * Y.
 478
 479 2021-01-05  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 480
 481         * tree-inline.c (expand_call_inline): Restore input_location.
 482         Return result from recursive call.
 483
 484 2021-01-04  Richard Sandiford  <richard.sandiford@arm.com>
 485
 486         PR tree-optimization/95401
 487         * config/aarch64/aarch64-sve-builtins.cc
 488         (gimple_folder::load_store_cookie): Use bits rather than bytes
 489         for the alignment argument to IFN_MASK_LOAD and IFN_MASK_STORE.
 490         * gimple-fold.c (gimple_fold_mask_load_store_mem_ref): Likewise.
 491         * tree-vect-stmts.c (vectorizable_store): Likewise.
 492         (vectorizable_load): Likewise.
 493
 494 2021-01-04  Richard Biener  <rguenther@suse.de>
 495
 496         PR tree-optimization/98308
 497         * tree-vect-stmts.c (vectorizable_load): Set invariant mask
 498         SLP vectype.
 499
 500 2021-01-04  Jakub Jelinek  <jakub@redhat.com>
 501
 502         PR tree-optimization/95771
 503         * tree-ssa-loop-niter.c (number_of_iterations_popcount): Handle types
 504         with precision smaller than int's precision and types with precision
 505         twice as large as long long.  Formatting fixes.
 506
 507 2021-01-04  Richard Biener  <rguenther@suse.de>
 508
 509         PR tree-optimization/98464
 510         * tree-ssa-sccvn.c (vn_valueize_for_srt): Rename from ...
 511         (vn_valueize_wrapper): ... this.  Temporarily adjust vn_context_bb.
 512         (process_bb): Adjust.
 513
 514 2021-01-04  Matthew Malcomson  <matthew.malcomson@arm.com>
 515
 516         PR other/98437
 517         * doc/invoke.texi (-fsanitize=address): Fix wording describing
 518         clash with -fsanitize=hwaddress.
 519
 520 2021-01-04  Richard Biener  <rguenther@suse.de>
 521
 522         PR tree-optimization/98282
 523         * tree-ssa-sccvn.c (vn_get_stmt_kind): Classify tcc_reference on
 524         invariants as VN_NARY.
 525
 526 2021-01-04  Richard Sandiford  <richard.sandiford@arm.com>
 527
 528         PR target/89057
 529         * config/aarch64/aarch64-simd.md (aarch64_combine<mode>): Accept
 530         aarch64_simd_reg_or_zero for operand 2.  Use the combinez patterns
 531         to handle zero operands.
 532
 533 2021-01-04  Richard Sandiford  <richard.sandiford@arm.com>
 534
 535         * config/aarch64/aarch64.c (offset_6bit_signed_scaled_p): New function.
 536         (offset_6bit_unsigned_scaled_p): Fix typo in comment.
 537         (aarch64_sve_prefetch_operand_p): Accept MUL VLs in the range
 538         [-32, 31].
 539
 540 2021-01-04  Richard Biener  <rguenther@suse.de>
 541
 542         PR tree-optimization/98393
 543         * tree-vect-slp.c (vect_build_slp_tree): Properly zero matches
 544         when hitting the limit.
 545
 546 2021-01-04  Richard Biener  <rguenther@suse.de>
 547
 548         PR tree-optimization/98291
 549         * tree-vect-loop.c (vectorizable_reduction): Bypass
 550         associativity check for SLP reductions with VF 1.
 551
 552 2021-01-04  Jakub Jelinek  <jakub@redhat.com>
 553
 554         PR tree-optimization/96782
 555         * match.pd (x == ~x -> false, x != ~x -> true): New simplifications.
 556
 557 2021-01-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 558
 559         * collect-utils.c (collect_execute): Check dumppfx.
 560         * collect2.c (maybe_run_lto_and_relink, do_link): Pass atsuffix
 561         to collect_execute.
 562         (do_link): Add new parameter atsuffix.
 563         (main): Handle -dumpdir option.  Skip one argument for
 564         -o, -isystem and -B options.
 565         * gcc.c (make_at_file): New helper function.
 566         (close_at_file): Use it.
 567
 568 2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>
 569
 570         * config/darwin.h (MIN_LD64_NO_COAL_SECTS): Adjust.
 571         Amend handling for LD64_VERSION fallback defaults.
 572
 573 2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>
 574
 575         * config.gcc: Compute default version information
 576         from the configured target.  Likewise defaults for
 577         ld64.
 578         * config/darwin10.h: Removed.
 579         * config/darwin12.h: Removed.
 580         * config/darwin9.h: Removed.
 581         * config/rs6000/darwin8.h: Removed.
 582
 583 2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>
 584
 585         * config/darwin9.h (ASM_OUTPUT_ALIGNED_COMMON): Delete.
 586
 587 2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>
 588
 589         * config/darwin9.h (STACK_CHECK_STATIC_BUILTIN): Move from here..
 590         * config/darwin.h (STACK_CHECK_STATIC_BUILTIN): .. to here.
 591
 592 2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>
 593
 594         * config/darwin10.h (LINK_GCC_C_SEQUENCE_SPEC): Move from
 595         here...
 596         * config/darwin.h (LINK_GCC_C_SEQUENCE_SPEC): ... to here.
 597
 598 2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>
 599
 600         * config/darwin10.h (LINK_GCC_C_SEQUENCE_SPEC): Move the spec
 601         for the Darwin10 unwinder stub from here ...
 602         * config/darwin.h (LINK_COMMAND_SPEC_A): ... to here.
 603
 604 2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>
 605
 606         * config/darwin.h (DSYMUTIL_SPEC): Default to DWARF
 607         (ASM_DEBUG_SPEC):Only define if the assembler supports
 608         stabs.
 609         (PREFERRED_DEBUGGING_TYPE): Default to DWARF.
 610         (DARWIN_PREFER_DWARF): Define.
 611         * config/darwin9.h (PREFERRED_DEBUGGING_TYPE): Remove.
 612         (DARWIN_PREFER_DWARF): Likewise
 613         (DSYMUTIL_SPEC): Likewise.
 614         (COLLECT_RUN_DSYMUTIL): Likewise.
 615         (ASM_DEBUG_SPEC): Likewise.
 616         (ASM_DEBUG_OPTION_SPEC): Likewise.
 617
 618 2021-01-02  Jan Hubicka  <jh@suse.cz>
 619
 620         * cfg.c (free_block): ggc_free bb.
 621
 622 2021-01-01  Jakub Jelinek  <jakub@redhat.com>
 623
 624         * gcc.c (process_command): Update copyright notice dates.
 625         * gcov-dump.c (print_version): Ditto.
 626         * gcov.c (print_version): Ditto.
 627         * gcov-tool.c (print_version): Ditto.
 628         * gengtype.c (create_file): Ditto.
 629         * doc/cpp.texi: Bump @copying's copyright year.
 630         * doc/cppinternals.texi: Ditto.
 631         * doc/gcc.texi: Ditto.
 632         * doc/gccint.texi: Ditto.
 633         * doc/gcov.texi: Ditto.
 634         * doc/install.texi: Ditto.
 635         * doc/invoke.texi: Ditto.
 636
 637 2021-01-01  Jakub Jelinek  <jakub@redhat.com>
 638
 639         * ChangeLog-2020: Rotate ChangeLog.  New file.
 640
 641 \f
 642 Copyright (C) 2021 Free Software Foundation, Inc.
 643
 644 Copying and distribution of this file, with or without modification,
 645 are permitted in any medium without royalty provided the copyright
 646 notice and this notice are preserved.