Daily bump.

[thirdparty/gcc.git] / gcc / ChangeLog

2021-02-25  Iain Sandoe  <iain@sandoe.co.uk>

        * config/aarch64/aarch64.md (<optab>_rol<mode>3): Add a '#'
        mark in front of the immediate quantity.
        (<optab>_rolsi3_uxtw): Likewise.

2021-02-25  Richard Earnshaw  <rearnsha@arm.com>

        PR target/99271
        * config/arm/thumb2.md (nonsecure_call_reg_thumb2_fpcxt): New pattern.
        (nonsecure_call_value_reg_thumb2_fpcxt): Likewise.
        (nonsecure_call_reg_thumb2): Restrict to using r4 for the callee
        address and disable when the FPCXT is not available.
        (nonsecure_call_value_reg_thumb2): Likewise.

2021-02-25  Nathan Sidwell  <nathan@acm.org>

        PR c++/99166
        * doc/invoke.texi (flang-info-module-cmi): Renamed option.

2021-02-25  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp.c (optimize_load_redistribution_1): Abort on NULL nodes.

2021-02-25  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99253
        * tree-vect-loop.c (check_reduction_path): First compute
        code, then verify out-of-loop uses.

2021-02-25  Jakub Jelinek  <jakub@redhat.com>

        PR target/95798
        * match.pd ((T)(A) + CST -> (T)(A + CST)): Add :s to convert.

2021-02-25  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/80635
        * tree-vrp.c (vrp_simplify_cond_using_ranges): Also handle
        VIEW_CONVERT_EXPR if modes are the same, innerop is integral and
        has mode precision.

2021-02-25  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (optimize_load_redistribution_1): Delay
        load_map population.
        (vect_match_slp_patterns_2): Revert part of last change.
        (vect_analyze_slp): Do not interleave optimize_load_redistribution
        with pattern detection but do it afterwards.  Dump the
        whole SLP graph after pattern recognition and load
        redistribution optimization finished.

2021-02-24  Jakub Jelinek  <jakub@redhat.com>

        PR fortran/99226
        * omp-low.c (struct omp_context): Add teams_nested_p and
        nonteams_nested_p members.
        (scan_omp_target): Diagnose teams nested inside of target with other
        directives strictly nested inside of the same target.
        (check_omp_nesting_restrictions): Set ctx->teams_nested_p or
        ctx->nonteams_nested_p as needed.

2021-02-24  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR inline-asm/99123
        * lra-constraints.c (uses_hard_regs_p): Don't use decompose_mem_address.

2021-02-24  Hans-Peter Nilsson  <hp@axis.com>

        * config/cris/cris.c (cris_expand_prologue): Set
        current_function_static_stack_size, if flag_stack_usage_info.

2021-02-24  Pat Haugen  <pthaugen@linux.ibm.com>

        * config/rs6000/rs6000.c (next_insn_prefixed_p): Rename.
        (rs6000_final_prescan_insn): Adjust.
        (rs6000_asm_output_opcode): Likewise.

2021-02-24  Martin Sebor  <msebor@redhat.com>

        PR middle-end/97172
        * attribs.c (attr_access::free_lang_data): Clear attribute arg spec
        from function arguments.

2021-02-24  Tamar Christina  <tamar.christina@arm.com>

        PR tree-optimization/99220
        * tree-vect-slp.c (optimize_load_redistribution_1): Remove
        node from cache when it's about to be deleted.

2021-02-24  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/99225
        * fold-const.c (fold_binary_loc) <case NE_EXPR>: In (x & (1 << y)) != 0
        to ((x >> y) & 1) != 0 simplifications use build_one_cst instead of
        build_int_cst (..., 1).  Formatting fixes.

2021-02-24  Tamar Christina  <tamar.christina@arm.com>

        PR tree-optimization/99149
        * tree-vect-slp-patterns.c (vect_detect_pair_op): Don't recreate the
        buffer.
        (vect_slp_reset_pattern): Remove.
        (complex_fma_pattern::matches): Remove call to vect_slp_reset_pattern.
        (complex_mul_pattern::build, complex_fma_pattern::build,
        complex_fms_pattern::build): Fix ref counts.
        * tree-vect-slp.c (vect_free_slp_tree): Undo SLP only pattern relevancy
        when node is being deleted.
        (vect_match_slp_patterns_2): Correct result of cache hit on patterns.
        (vect_schedule_slp): Invalidate SLP_TREE_REPRESENTATIVE of removed
        stores.
        * tree-vectorizer.c (vec_info::new_stmt_vec_info): Initialize value.

2021-02-24  Matthias Klose  <doko@ubuntu.com>

        Revert:
        2020-12-07  Matthias Klose  <doko@ubuntu.com>

        * genextract.c (print_header): Undefine ENABLE_RTL_CHECKING
        and ENABLE_RTL_FLAG_CHECKING.

2021-02-24  Richard Biener  <rguenther@suse.de>

        PR c/99224
        * builtins.c (fold_builtin_next_arg): Avoid NULL arg.

2021-02-23  Peter Bergner  <bergner@linux.ibm.com>

        * config/rs6000/mma.md (mma_assemble_pair): Rename from this...
        (vsx_assemble_pair): ...to this.
        (*mma_assemble_pair): Rename from this...
        (*vsx_assemble_pair): ...to this.
        (mma_disassemble_pair): Rename from this...
        (vsx_disassemble_pair): ...to this.
        (*mma_disassemble_pair): Rename from this...
        (*vsx_disassemble_pair): ...to this.
        * config/rs6000/rs6000-builtin.def (BU_MMA_V2, BU_MMA_V3,
        BU_COMPAT): New macros.
        (mma_assemble_pair): Rename from this...
        (vsx_assemble_pair): ...to this.
        (mma_disassemble_pair): Rename from this...
        (vsx_disassemble_pair): ...to this.
        (mma_assemble_pair): New compatibility built-in.
        (mma_disassemble_pair): Likewise.
        * config/rs6000/rs6000-call.c (struct builtin_compatibility): New.
        (RS6000_BUILTIN_COMPAT): Define.
        (bdesc_compat): New.
        (mma_expand_builtin): Use VSX_BUILTIN_DISASSEMBLE_PAIR_INTERNAL.
        (rs6000_gimple_fold_mma_builtin): Use MMA_BUILTIN_DISASSEMBLE_PAIR
        and VSX_BUILTIN_ASSEMBLE_PAIR.
        (rs6000_init_builtins): Register compatibility built-ins.
        (mma_init_builtins): Use VSX_BUILTIN_ASSEMBLE_PAIR,
        VSX_BUILTIN_ASSEMBLE_PAIR_INTERNAL, VSX_BUILTIN_DISASSEMBLE_PAIR and
        VSX_BUILTIN_DISASSEMBLE_PAIR_INTERNAL.
        * doc/extend.texi (__builtin_mma_assemble_pair): Rename from this...
        (__builtin_vsx_assemble_pair): ...to this.
        (__builtin_mma_disassemble_pair): Rename from this...
        (__builtin_vsx_disassemble_pair): ...to this.

2021-02-23  Martin Liska  <mliska@suse.cz>

        PR sanitizer/99168
        * ipa-icf.c (sem_variable::merge): Do not merge 2 variables
        with different alignment. That leads to an invalid red zone
        size allocated in runtime.

2021-02-23  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/99204
        * fold-const.c (fold_read_from_constant_string): Check that
        tree_fits_uhwi_p (index) rather than just that index is INTEGER_CST.

2021-02-23  Segher Boessenkool  <segher@kernel.crashing.org>
            Kewen Lin  <linkw@gcc.gnu.org>

        * config/rs6000/rs6000.md (*rotl<mode>3_insert_3): Renamed to...
        (rotl<mode>3_insert_3): ...this.
        (plus_ior_xor): New code_iterator.
        (define_split for GPR rl*imi): New splitter.
        * config/rs6000/vsx.md (vsx_init_v4si): Use gen_rotldi3_insert_3
        for integer merging.

2021-02-22  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-tuning-flags.def (cse_sve_vl_constants):
        Define.
        * config/aarch64/aarch64.md (add<mode>3): Force CONST_POLY_INT immediates
        into a register when the above is enabled.
        * config/aarch64/aarch64.c (neoversev1_tunings):
        AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS.
        (aarch64_rtx_costs): Use AARCH64_EXTRA_TUNE_CSE_SVE_VL_CONSTANTS.

2021-02-22  Hans-Peter Nilsson  <hp@axis.com>

        * config/cris/cris.c (cris_print_operand) <'T'>: Change
        valid operand from is now an addi mult-value to shift-value.
        * config/cris/cris.md (*addi): Change expression of scaled
        operand from mult to ashift.
        * config/cris/cris.md (*addi_reload): New insn_and_split.

2021-02-22  John David Anglin  <danglin@gcc.gnu.org>

        PR target/85074
        * config/pa/pa.c (TARGET_ASM_CAN_OUTPUT_MI_THUNK): Define as
        hook_bool_const_tree_hwi_hwi_const_tree_true.
        (pa_asm_output_mi_thunk): Add support for nonzero vcall_offset.

2021-02-22  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        PR rtl-optimization/98791
        * ira-conflicts.c (process_regs_for_copy): Don't create allocno copies
        for unordered modes.

2021-02-22  Martin Liska  <mliska@suse.cz>

        * tree-inline.c (inline_forbidden_p): Set
        inline_forbidden_reason.

2021-02-22  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_bb_vectorization_profitable_p): Dump
        costed subgraph.

2021-02-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99165
        * gimple-ssa-store-merging.c (pass_store_merging::process_store):
        Accumulate changed to ret.

2021-02-21  Uros Bizjak  <ubizjak@gmail.com>

        Revert:
        2020-12-09  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.h (REG_ALLOC_ORDER): Remove

2021-02-20  Ilya Leoshkevich  <iii@linux.ibm.com>

        PR target/99134
        * config/s390/vector.md (trunctf<DFP_ALL:mode>2_vr): New
        pattern.
        (trunctf<DFP_ALL:mode>2): Likewise.
        (trunctdtf2_vr): Likewise.
        (trunctdtf2): Likewise.
        (extend<DFP_ALL:mode>tf2_vr): Likewise.
        (extend<DFP_ALL:mode>tf2): Likewise.
        (extendtftd2_vr): Likewise.
        (extendtftd2): Likewise.

2021-02-20  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/vector.md (*fprx2_to_tf): Rename to fprx2_to_tf,
        add memory alternative.
        (tf_to_fprx2): New pattern.

2021-02-19  Martin Sebor  <msebor@redhat.com>

        PR c/97172
        * attribs.c (init_attr_rdwr_indices): Guard vblist use.
        (attr_access::free_lang_data): Remove a spurious test.

2021-02-19  Nathan Sidwell  <nathan@acm.org>

        * doc/invoke.texi (flang-info-module-read): Document.

2021-02-19  Martin Liska  <mliska@suse.cz>

        PR translation/99167
        * params.opt: Fix typo.

2021-02-19  Richard Biener  <rguenther@suse.de>

        PR middle-end/99122
        * tree-inline.c (inline_forbidden_p): Do not inline functions
        with VLA arguments or return value.

2021-02-19  Jakub Jelinek  <jakub@redhat.com>

        PR target/98998
        * config/arm/arm.md (*stack_protect_combined_set_insn,
        *stack_protect_combined_test_insn): If force_const_mem result
        is not valid general operand, force its address into the destination
        register first.

2021-02-19  Jakub Jelinek  <jakub@redhat.com>

        PR ipa/99034
        * tree-cfg.c (gimple_merge_blocks): If bb a starts with eh landing
        pad or non-local label, put FORCED_LABELs from bb b after that label
        rather than before it.

2021-02-19  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        PR target/98657
        * config/aarch64/aarch64-sve.md (<ASHIFT:optab><mode>3): Use
        expand_vector_broadcast' to emit the vec_duplicate operand.

2021-02-18  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/96264
        * lra-remat.c (reg_overlap_for_remat_p): Check also output insn
        hard regs.

2021-02-18  H.J. Lu  <hjl.tools@gmail.com>

        PR target/99113
        * varasm.c (get_section): Replace SUPPORTS_SHF_GNU_RETAIN with
        looking up the retain attribute.
        (resolve_unique_section): Likewise.
        (get_variable_section): Likewise.
        (switch_to_section): Likewise.  Warn when a symbol without the
        retain attribute and a symbol with the retain attribute are
        placed in the section with the same name, instead of the used
        attribute.
        * doc/extend.texi: Document the "retain" attribute.

2021-02-18  Nathan Sidwell  <nathan@acm.org>

        PR c++/99023
        * doc/invoke.texi (flang-info-include-translate): Document header
        lookup behaviour.

2021-02-18  Richard Biener  <rguenther@suse.de>

        PR middle-end/99122
        * ipa-fnsummary.c (analyze_function_body): Set
        CIF_FUNCTION_NOT_INLINABLE for VLA parameter calls.
        * tree-inline.c (insert_init_debug_bind): Pass NULL for
        error_mark_node values.
        (force_value_to_type): Do not build V_C_Es for WITH_SIZE_EXPR
        values.
        (setup_one_parameter): Delay force_value_to_type until when
        it's needed.

2021-02-18  Hans-Peter Nilsson  <hp@axis.com>

        PR tree-optimization/99142
        * match.pd (clz cmp 0): Gate replacement on single_use of clz result.

2021-02-18  Jakub Jelinek  <jakub@redhat.com>

        * wide-int-bitmask.h (wide_int_bitmask::wide_int_bitmask (),
        wide_int_bitmask::wide_int_bitmask (uint64_t),
        wide_int_bitmask::wide_int_bitmask (uint64_t, uint64_t),
        wide_int_bitmask::operator ~ () const,
        wide_int_bitmask::operator | (wide_int_bitmask) const,
        wide_int_bitmask::operator & (wide_int_bitmask) const): Use constexpr
        instead of inline.
        * config/i386/i386.h (PTA_3DNOW, PTA_3DNOW_A, PTA_64BIT, PTA_ABM,
        PTA_AES, PTA_AVX, PTA_BMI, PTA_CX16, PTA_F16C, PTA_FMA, PTA_FMA4,
        PTA_FSGSBASE, PTA_LWP, PTA_LZCNT, PTA_MMX, PTA_MOVBE, PTA_NO_SAHF,
        PTA_PCLMUL, PTA_POPCNT, PTA_PREFETCH_SSE, PTA_RDRND, PTA_SSE, PTA_SSE2,
        PTA_SSE3, PTA_SSE4_1, PTA_SSE4_2, PTA_SSE4A, PTA_SSSE3, PTA_TBM,
        PTA_XOP, PTA_AVX2, PTA_BMI2, PTA_RTM, PTA_HLE, PTA_PRFCHW, PTA_RDSEED,
        PTA_ADX, PTA_FXSR, PTA_XSAVE, PTA_XSAVEOPT, PTA_AVX512F, PTA_AVX512ER,
        PTA_AVX512PF, PTA_AVX512CD, PTA_NO_TUNE, PTA_SHA, PTA_PREFETCHWT1,
        PTA_CLFLUSHOPT, PTA_XSAVEC, PTA_XSAVES, PTA_AVX512DQ, PTA_AVX512BW,
        PTA_AVX512VL, PTA_AVX512IFMA, PTA_AVX512VBMI, PTA_CLWB, PTA_MWAITX,
        PTA_CLZERO, PTA_NO_80387, PTA_PKU, PTA_AVX5124VNNIW, PTA_AVX5124FMAPS,
        PTA_AVX512VPOPCNTDQ, PTA_SGX, PTA_AVX512VNNI, PTA_GFNI, PTA_VAES,
        PTA_AVX512VBMI2, PTA_VPCLMULQDQ, PTA_AVX512BITALG, PTA_RDPID,
        PTA_PCONFIG, PTA_WBNOINVD, PTA_AVX512VP2INTERSECT, PTA_PTWRITE,
        PTA_AVX512BF16, PTA_WAITPKG, PTA_MOVDIRI, PTA_MOVDIR64B, PTA_ENQCMD,
        PTA_CLDEMOTE, PTA_SERIALIZE, PTA_TSXLDTRK, PTA_AMX_TILE, PTA_AMX_INT8,
        PTA_AMX_BF16, PTA_UINTR, PTA_HRESET, PTA_KL, PTA_WIDEKL, PTA_AVXVNNI,
        PTA_X86_64_BASELINE, PTA_X86_64_V2, PTA_X86_64_V3, PTA_X86_64_V4,
        PTA_CORE2, PTA_NEHALEM, PTA_WESTMERE, PTA_SANDYBRIDGE, PTA_IVYBRIDGE,
        PTA_HASWELL, PTA_BROADWELL, PTA_SKYLAKE, PTA_SKYLAKE_AVX512,
        PTA_CASCADELAKE, PTA_COOPERLAKE, PTA_CANNONLAKE, PTA_ICELAKE_CLIENT,
        PTA_ICELAKE_SERVER, PTA_TIGERLAKE, PTA_SAPPHIRERAPIDS, PTA_ALDERLAKE,
        PTA_KNL, PTA_BONNELL, PTA_SILVERMONT, PTA_GOLDMONT, PTA_GOLDMONT_PLUS,
        PTA_TREMONT, PTA_KNM): Use constexpr instead of const.

2021-02-18  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99109
        * gimple-array-bounds.cc (build_zero_elt_array_type): Rename to ...
        (build_printable_array_type): ... this.  Add nelts argument.  For
        overaligned eltype, use TYPE_MAIN_VARIANT (eltype) instead.  If
        nelts, call build_array_type_nelts.
        (array_bounds_checker::check_mem_ref): Use build_printable_array_type
        instead of build_zero_elt_array_type and build_array_type_nelts.

2021-02-18  Jakub Jelinek  <jakub@redhat.com>

        PR target/99104
        * config/i386/i386.c (distance_non_agu_define): Don't call
        extract_insn_cached here.
        (ix86_lea_outperforms): Save and restore recog_data around call
        to distance_non_agu_define and distance_agu_use.
        (ix86_ok_to_clobber_flags): Remove.
        (ix86_avoid_lea_for_add): Don't call ix86_ok_to_clobber_flags.
        (ix86_avoid_lea_for_addr): Likewise.  Adjust function comment.
        * config/i386/i386.md (*lea<mode>): Change from define_insn_and_split
        into define_insn.  Move the splitting to define_peephole2 and
        check there using peep2_regno_dead_p if FLAGS_REG is dead.

2021-02-17  Julian Brown  <julian@codesourcery.com>

        * gimplify.c (gimplify_scan_omp_clauses): Handle ATTACH_DETACH
        for non-decls.

2021-02-17  Xi Ruoyao  <xry111@mengyan1223.wang>

        PR target/98491
        * config/mips/mips.c (mips_symbol_insns): Do not use
        MSA_SUPPORTED_MODE_P if mode is MAX_MACHINE_MODE.

2021-02-16  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR inline-asm/98096
        * stmt.c (resolve_operand_name_1): Take inout operands into account
        for access to labels by names.
        * doc/extend.texi: Describe counting operands for accessing labels.

2021-02-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/38474
        * tree-ssa-structalias.c (variable_info::address_taken): New.
        (new_var_info): Initialize address_taken.
        (process_constraint): Set address_taken.
        (solve_constraints): Use the new address_taken flag rather
        than is_reg_var for sorting variables.
        (dump_constraint): Dump the variable number if the name
        is just NULL.

2021-02-16  Jakub Jelinek  <jakub@redhat.com>

        PR target/99100
        * tree-vect-stmts.c (vectorizable_simd_clone_call): For num_calls != 1
        multiply by 4096 and for inbranch by 8192.
        * config/i386/i386.c (ix86_simd_clone_usable): For TARGET_AVX512F,
        return 3, 2 or 1 for mangle letters 'b', 'c' or 'd'.

2021-02-15  Maya Rashish  <coypu@sdf.org>

        * config/aarch64/aarch64.c (aarch64_init_builtins):
        Call SUBTARGET_INIT_BUILTINS.

2021-02-15  Peter Bergner  <bergner@linux.ibm.com>

        PR rtl-optimization/98872
        * init-regs.c (initialize_uninitialized_regs): Skip initialization
        if CONST0_RTX is NULL.

2021-02-15  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/98863
        * rtl-ssa/functions.h (function_info::bb_live_out_info): Delete.
        (function_info::build_info): Turn into a declaration, moving the
        definition to internals.h.
        (function_info::bb_walker): Declare.
        (function_info::create_reg_use): Likewise.
        (function_info::calculate_potential_phi_regs): Take a build_info
        parameter.
        (function_info::place_phis, function_info::create_ebbs): Declare.
        (function_info::calculate_ebb_live_in_for_debug): Likewise.
        (function_info::populate_backedge_phis): Delete.
        (function_info::start_block, function_info::end_block): Declare.
        (function_info::populate_phi_inputs): Delete.
        (function_info::m_potential_phi_regs): Move information to build_info.
        * rtl-ssa/internals.h: New file.
        (function_info::bb_phi_info): New class.
        (function_info::build_info): Moved from functions.h.
        Add a constructor and destructor.
        (function_info::build_info::ebb_use): Delete.
        (function_info::build_info::ebb_def): Likewise.
        (function_info::build_info::bb_live_out): Likewise.
        (function_info::build_info::tmp_ebb_live_in_for_debug): New variable.
        (function_info::build_info::potential_phi_regs): Likewise.
        (function_info::build_info::potential_phi_regs_for_debug): Likewise.
        (function_info::build_info::ebb_def_regs): Likewise.
        (function_info::build_info::bb_phis): Likewise.
        (function_info::build_info::bb_mem_live_out): Likewise.
        (function_info::build_info::bb_to_rpo): Likewise.
        (function_info::build_info::def_stack): Likewise.
        (function_info::build_info::old_def_stack_limit): Likewise.
        * rtl-ssa/internals.inl (function_info::build_info::record_reg_def):
        Remove the regno argument.  Push the previous definition onto the
        definition stack where necessary.
        * rtl-ssa/accesses.cc: Include internals.h.
        * rtl-ssa/changes.cc: Likewise.
        * rtl-ssa/blocks.cc: Likewise.
        (function_info::build_info::build_info): Define.
        (function_info::build_info::~build_info): Likewise.
        (function_info::bb_walker): New class.
        (function_info::bb_walker::bb_walker): Define.
        (function_info::add_live_out_use): Convert a logarithmic-complexity
        test into a linear one.  Allow the same definition to be passed
        multiple times.
        (function_info::calculate_potential_phi_regs): Moved from
        functions.cc.  Take a build_info parameter and store the
        information there instead.
        (function_info::place_phis): New function.
        (function_info::add_entry_block_defs): Update call to record_reg_def.
        (function_info::calculate_ebb_live_in_for_debug): New function.
        (function_info::add_phi_nodes): Use bb_phis to decide which
        registers need phi nodes and initialize ebb_def_regs accordingly.
        Do not add degenerate phis here.
        (function_info::add_artificial_accesses): Use create_reg_use.
        Assert that all definitions are listed in the DF LR sets.
        Update call to record_reg_def.
        (function_info::record_block_live_out): Record live-out register
        values in the phis of successor blocks.  Use the live-out set
        when processing the last block in an EBB, instead of always
        using the live-in sets of successor blocks.  AND the live sets
        with the set of registers that have been defined in the EBB,
        rather than with all potential phi registers.  Cope correctly
        with branches back to the start of the current EBB.
        (function_info::start_block): New function.
        (function_info::end_block): Likewise.
        (function_info::populate_phi_inputs): Likewise.
        (function_info::create_ebbs): Likewise.
        (function_info::process_all_blocks): Rewrite into a multi-phase
        process.
        * rtl-ssa/functions.cc: Include internals.h.
        (function_info::calculate_potential_phi_regs): Move to blocks.cc.
        (function_info::init_function_data): Remove caller.
        * rtl-ssa/insns.cc: Include internals.h
        (function_info::create_reg_use): New function.  Lazily any
        degenerate phis needed by the linear RPO view.
        (function_info::record_use): Use create_reg_use.  When processing
        debug uses, use potential_phi_regs and test it before checking
        whether the register is live on entry to the current EBB.  Lazily
        calculate ebb_live_in_for_debug.
        (function_info::record_call_clobbers): Update call to record_reg_def.
        (function_info::record_def): Likewise.

2021-02-15  Martin Liska  <mliska@suse.cz>

        * toplev.c (init_asm_output): Free output of
        gen_command_line_string function.
        (process_options): Likewise.

2021-02-15  Martin Liska  <mliska@suse.cz>

        * params.opt: Add 2 missing Param keywords.

2021-02-15  Eric Botcazou  <ebotcazou@adacore.com>

        * df-core.c (df_worklist_dataflow_doublequeue): Use proper cast.

2021-02-15  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/99079
        * match.pd (A % (pow2pcst << N) -> A & ((pow2pcst << N) - 1)): Remove
        useless tree_nop_conversion_p (type, TREE_TYPE (@3)) check.  Instead
        require both type and TREE_TYPE (@1) to be integral types and either
        type having smaller or equal precision, or TREE_TYPE (@1) being
        unsigned type, or type being signed type.  If TREE_TYPE (@1)
        doesn't have wrapping overflow, perform the subtraction of one in
        unsigned type.

2021-02-14  Jan Hubicka  <hubicka@ucw.cz>
            Richard Biener  <rguether@suse.de>

        PR ipa/97346
        * ipa-reference.c (ipa_init): Only conditinally initialize
        reference_vars_to_consider.
        (propagate): Conditionally deninitialize reference_vars_to_consider.
        (ipa_reference_write_optimization_summary): Sanity check that
        reference_vars_to_consider is not allocated.

2021-02-13  Levy Hsu  <admin@levyhsu.com>

        PR target/97417
        * config/riscv/riscv-shorten-memrefs.c (pass_shorten_memrefs): Add
        extend parameter to get_si_mem_base_reg declaration.
        (get_si_mem_base_reg): Add extend parameter.  Set it.
        (analyze): Pass extend arg to get_si_mem_base_reg.
        (transform): Likewise.  Use it when rewriting mems.
        * config/riscv/riscv.c (riscv_legitimize_move): Check for subword
        loads and emit sign/zero extending load followed by subreg move.

2021-02-13  Jim Wilson  <jimw@sifive.com>

        PR target/97417
        * config/riscv/riscv.c (riscv_compressed_lw_address_p): Drop early
        exit when !reload_completed.  Only perform check for compressed reg
        if reload_completed.
        (riscv_rtx_costs): In MEM case, when optimizing for size and
        shorten memrefs, if not compressible, then increase cost.

2021-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/98439
        * recog.c (pass_split_before_regstack::gate): Enable even when
        pass_split_before_sched2 is enabled if -fselective-scheduling2 is
        on.

2021-02-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/96166
        * config/i386/mmx.md (*mmx_pshufd_1): Add a combine splitter for
        swap of V2SImode elements in memory into DImode memory rotate by 32.

2021-02-12  Martin Sebor  <msebor@redhat.com>

        * tree-pretty-print.c (print_generic_expr_to_str): Update comment.

2021-02-12  Richard Sandiford  <richard.sandiford@arm.com>

        * rtl-ssa/accesses.cc (function_info::make_use_available): Use
        m_temp_obstack rather than m_obstack to allocate the temporary use.

2021-02-12  Richard Sandiford  <richard.sandiford@arm.com>

        * df-problems.c (df_lr_bb_local_compute): Treat partial definitions
        as read-modify operations.

2021-02-12  Richard Biener  <rguenther@suse.de>

        PR middle-end/38474
        * ipa-fnsummary.c (unmodified_parm_1): Only walk when
        fbi->aa_walk_budget is bigger than zero.  Update
        fbi->aa_walk_budget.
        (param_change_prob): Likewise.
        * ipa-prop.c (detect_type_change_from_memory_writes):
        Properly account walk_aliased_vdefs.
        (parm_preserved_before_stmt_p): Canonicalize updates.
        (parm_ref_data_preserved_p): Likewise.
        (parm_ref_data_pass_through_p): Likewise.
        (determine_known_aggregate_parts): Account own alias queries.

2021-02-12  Martin Liska  <mliska@suse.cz>

        * opts-common.c (decode_cmdline_option): Release werror_arg.
        * opts.c (gen_producer_string): Release output of
        gen_command_line_string.

2021-02-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/38474
        * params.opt (-param=max-store-chains-to-track=): New param.
        (-param=max-stores-to-track=): Likewise.
        * doc/invoke.texi (max-store-chains-to-track): Document.
        (max-stores-to-track): Likewise.
        * gimple-ssa-store-merging.c (pass_store_merging::m_n_chains):
        New.
        (pass_store_merging::m_n_stores): Likewise.
        (pass_store_merging::terminate_and_process_chain): Update
        m_n_stores and m_n_chains.
        (pass_store_merging::process_store): Likewise.   Terminate
        oldest chains if the number of stores or chains get too large.
        (imm_store_chain_info::terminate_and_process_chain): Dump
        chain length.

2021-02-11  Eric Botcazou  <ebotcazou@adacore.com>

        * config/i386/winnt.c (i386_pe_seh_unwind_emit): When switching to
        the cold section, emit a nop before the directive if the previous
        active instruction can throw.

2021-02-11  Peter Bergner  <bergner@linux.ibm.com>

        PR target/99041
        * config/rs6000/predicates.md (mma_assemble_input_operand): Restrict
        memory addresses that are legal for quad word accesses.

2021-02-11  Andrea Corallo  <andrea.corallo@arm.com>

        PR target/98931
        * config/arm/thumb2.md (*doloop_end_internal): Generate
        alternative sequence to handle long range branches.

2021-02-11  Joel Hutton  <joel.hutton@arm.com>

        PR tree-optimization/98772
        * optabs-tree.c (supportable_half_widening_operation): New function
        to check for supportable V8QI->V8HI widening patterns.
        * optabs-tree.h (supportable_half_widening_operation): New function.
        * tree-vect-stmts.c (vect_create_half_widening_stmts): New function
        to create promotion stmts for V8QI->V8HI widening patterns.
        (vectorizable_conversion): Add case for V8QI->V8HI.

2021-02-11  Richard Biener  <rguenther@suse.de>

        * sparseset.h (SPARSESET_ELT_BITS): Remove.
        (SPARSESET_ELT_TYPE): Use unsigned int.
        * fwprop.c: Do not include sparseset.h.

2021-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR c++/99035
        * varasm.c (declare_weak): For -fsyntax-only, allow even
        TREE_ASM_WRITTEN function decls.

2021-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR target/99025
        * config/i386/sse.md (fix<fixunssuffix>_truncv2sfv2di2,
        <insn>v8qiv8hi2, <insn>v8qiv8si2, <insn>v4qiv4si2, <insn>v4hiv4si2,
        <insn>v8qiv8di2, <insn>v4qiv4di2, <insn>v2qiv2di2, <insn>v4hiv4di2,
        <insn>v2hiv2di2, <insn>v2siv2di2): Force operands[1] into REG before
        calling simplify_gen_subreg on it.

2021-02-10  Martin Liska  <mliska@suse.cz>

        * config/nvptx/nvptx.c (nvptx_option_override): Use
        flag_patchable_function_entry instead of the removed
        function_entry_patch_area_size.

2021-02-10  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/99002
        PR tree-optimization/99026
        * gimple-if-to-switch.cc (if_chain::is_beneficial): Fix memory
        leak when adjacent cases are merged.
        * tree-switch-conversion.c (switch_decision_tree::analyze_switch_statement): Use
        release_clusters.
        (make_pass_lower_switch): Remove trailing whitespace.
        * tree-switch-conversion.h (release_clusters): New.

2021-02-10  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/99054
        * cfgrtl.c (rtl-optimization/99054): Return an auto_vec.
        (fixup_partitions): Adjust.
        (rtl_verify_edges): Likewise.

2021-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99007
        * gimplify.c (gimplify_scan_omp_clauses): For MEM_REF on reductions,
        temporarily disable gimplify_ctxp->into_ssa around gimplify_expr
        calls.

2021-02-10  Richard Biener  <rguenther@suse.de>

        PR ipa/99029
        * ipa-pure-const.c (propagate_malloc): Use an auto_vec<>
        for callees.

2021-02-10  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99024
        * tree-vect-loop.c (_loop_vec_info::~_loop_vec_info): Only
        clear loop->aux if it is associated with the destroyed loop_vinfo.

2021-02-10  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/99002
        * gimple-if-to-switch.cc (find_conditions): Fix memory leak
        in the function.

2021-02-10  Martin Liska  <mliska@suse.cz>

        PR ipa/99003
        * ipa-icf.c (sem_item::add_reference): Fix memory leak when
        a reference exists.

2021-02-10  Jakub Jelinek  <jakub@redhat.com>

        PR debug/98755
        * dwarf2out.c (prune_unused_types_walk): Mark DW_TAG_variable DIEs
        at class scope for DWARF5+.

2021-02-09  Eric Botcazou  <ebotcazou@adacore.com>

        PR rtl-optimization/96015
        * reorg.c (skip_consecutive_labels): Minor comment tweaks.
        (relax_delay_slots): When deleting a jump to the next active
        instruction over a barrier, first delete the barrier if the
        jump is the only way to reach the target label.

2021-02-09  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        * config/aarch64/aarch64-cost-tables.h: Add entries for vect.mul.
        * config/aarch64/aarch64.c (aarch64_rtx_mult_cost): Use vect.mul for
        vector multiplies and vect.alu for SSRA.
        * config/arm/aarch-common-protos.h (struct vector_cost_table): Define
        vect.mul cost field.
        * config/arm/aarch-cost-tables.h: Add entries for vect.mul.
        * config/arm/arm.c: Likewise.

2021-02-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98863
        * tree-ssa-sccvn.h (vn_avail::next_undo): Add.
        * tree-ssa-sccvn.c (last_pushed_avail): New global.
        (rpo_elim::eliminate_push_avail): Chain pushed avails.
        (unwind_state::avail_top): Add.
        (do_unwind): Rewrite unwinding of avail entries.
        (do_rpo_vn): Initialize last_pushed_avail and
        avail_top of the undo state.

2021-02-09  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/99004
        * calls.c (maybe_warn_rdwr_sizes): Change s0 and s1 type from
        const char * to char * and free those pointers after use.

2021-02-09  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/99017
        * tree-vect-slp.c (vect_bb_vectorization_profitable_p): Allow
        zero vector cost entries.

2021-02-08  Andre Vieira  <andre.simoesdiasvieira@arm.com>

        PR middle-end/98974
        * tree-vect-stmts.c (vectorizable_condition): Remove shadow vec_num
        parameter in vectorizable_condition.

2021-02-08  Richard Biener  <rguenther@suse.de>

        PR lto/96591
        * tree.c (walk_tree_1): Walk VECTOR_CST elements.

2021-02-08  Martin Liska  <mliska@suse.cz>

        PR lto/98971
        * cfgexpand.c (pass_expand::execute): Parse per-function option
        flag_patchable_function_entry and use it.
        * common.opt: Remove function_entry_patch_area_size and
        function_entry_patch_area_start global variables.
        * opts.c (parse_and_check_patch_area): New function.
        (common_handle_option): Use it.
        * opts.h (parse_and_check_patch_area): New function.
        * toplev.c (process_options): Parse and use
        function_entry_patch_area_size.

2021-02-08  Martin Sebor  <msebor@redhat.com>

        * doc/extend.texi (attribute malloc): Correct typos.

2021-02-05  Nathan Sidwell  <nathan@acm.org>

        PR driver/98943
        * gcc.c (driver::maybe_run_linker): Check for input file
        accessibility if not linking.

2021-02-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98855
        * tree-vectorizer.h (add_stmt_cost): New overload.
        * tree-vect-slp.c (li_cost_vec_cmp): New.
        (vect_bb_slp_scalar_cost): Cost individual loop regions
        separately.  Account for the scalar instance root stmt.

2021-02-05  Tom de Vries  <tdevries@suse.de>

        PR debug/98656
        * tree-switch-conversion.c (jump_table_cluster::emit): Add loc
        argument.
        (bit_test_cluster::emit): Reuse location_t for newly created
        gswitch statement.
        (switch_decision_tree::try_switch_expansion): Preserve
        location_t.
        * tree-switch-conversion.h: Change function signatures.

2021-02-05  Jakub Jelinek  <jakub@redhat.com>

        PR target/98957
        * config/i386/i386-options.c (m_NONE, m_ALL): Define.
        * config/i386/x86-tune.def (X86_TUNE_BRANCH_PREDICTION_HINTS,
        X86_TUNE_PROMOTE_QI_REGS): Use m_NONE instead of 0U.
        (X86_TUNE_QIMODE_MATH): Use m_ALL instead of ~0U.

2021-02-05  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (get_high): Define builtin.
        * config/aarch64/aarch64-simd.md (aarch64_get_high<mode>): Define.
        * config/aarch64/arm_neon.h (__GET_HIGH): Delete.
        (vget_high_f16): Reimplement using new builtin.
        (vget_high_f32): Likewise.
        (vget_high_f64): Likewise.
        (vget_high_p8): Likewise.
        (vget_high_p16): Likewise.
        (vget_high_p64): Likewise.
        (vget_high_s8): Likewise.
        (vget_high_s16): Likewise.
        (vget_high_s32): Likewise.
        (vget_high_s64): Likewise.
        (vget_high_u8): Likewise.
        (vget_high_u16): Likewise.
        (vget_high_u32): Likewise.
        (vget_high_u64): Likewise.

2021-02-05  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (get_low): Define builtin.
        * config/aarch64/aarch64-simd.md (aarch64_get_low<mode>): Define.
        * config/aarch64/arm_neon.h (__GET_LOW): Delete.
        (vget_low_f16): Reimplement using new builtin.
        (vget_low_f32): Likewise.
        (vget_low_f64): Likewise.
        (vget_low_p8): Likewise.
        (vget_low_p16): Likewise.
        (vget_low_p64): Likewise.
        (vget_low_s8): Likewise.
        (vget_low_s16): Likewise.
        (vget_low_s32): Likewise.
        (vget_low_s64): Likewise.
        (vget_low_u8): Likewise.
        (vget_low_u16): Likewise.
        (vget_low_u32): Likewise.
        (vget_low_u64): Likewise.

2021-02-05  Kito Cheng  <kito.cheng@sifive.com>

        * gcc.c (print_multilib_info): Check all required argument is provided
        by default arg.

2021-02-05  liuhongt  <hongtao.liu@intel.com>

        PR target/98537
        * config/i386/i386-expand.c (ix86_expand_sse_cmp): Don't
        generate integer mask comparison for 128/256-bits vector when
        op_true/op_false is NULL_RTX or CONSTM1_RTX/CONST0_RTX. Also
        delete redundant !maskcmp condition.
        (ix86_expand_int_vec_cmp): Ditto but no redundant deletion
        here.
        (ix86_expand_sse_movcc): Delete definition of maskcmp, add the
        condition directly to if (maskcmp), add extra check for
        cmpmode, it should be MODE_INT.
        (ix86_expand_fp_vec_cmp): Pass NULL to ix86_expand_sse_cmp's
        parameters op_true/op_false.
        (ix86_use_mask_cmp_p): New.

2021-02-05  liuhongt  <hongtao.liu@intel.com>

        PR target/98172
        * config/i386/x86-tune.def (X86_TUNE_AVX256_UNALIGNED_LOAD_OPTIMAL):
        Remove m_GENERIC from ~list.
        (X86_TUNE_AVX256_UNALIGNED_STORE_OPTIMAL): Ditto.

2021-02-04  David Malcolm  <dmalcolm@redhat.com>

        PR c/97932
        * diagnostic-show-locus.c (compatible_locations_p): Require
        locations in the same macro map to be either both from the
        macro definition, or both from the macro arguments.

2021-02-04  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add
        [su]mull_hi_lane[q] builtin generator macros.
        * config/aarch64/aarch64-simd.md
        (aarch64_<su>mull_hi_lane<mode>_insn): Define.
        (aarch64_<su>mull_hi_lane<mode>): Define.
        (aarch64_<su>mull_hi_laneq<mode>_insn): Define.
        (aarch64_<su>mull_hi_laneq<mode>): Define.
        * config/aarch64/arm_neon.h (vmull_high_lane_s16): Use RTL
        builtin instead of inline asm.
        (vmull_high_lane_s32): Likewise.
        (vmull_high_lane_u16): Likewise.
        (vmull_high_lane_u32): Likewise.
        (vmull_high_laneq_s16): Likewise.
        (vmull_high_laneq_s32): Likewise.
        (vmull_high_laneq_u16): Likewise.
        (vmull_high_laneq_u32): Liekwise.

2021-02-04  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mull_hi_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md
        (aarch64_<su>mull_hi_n<mode>_insn): Define.
        (aarch64_<su>mull_hi_n<mode>): Define.
        * config/aarch64/arm_neon.h (vmull_high_n_s16): Use RTL builtin
        instead of inline asm.
        (vmull_high_n_s32): Likewise.
        (vmull_high_n_u16): Likewise.
        (vmull_high_n_u32): Likewise.

2021-02-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98855
        * tree-vect-loop.c (vectorizable_phi): Do not cost
        single-argument PHIs.
        * tree-vect-slp.c (vect_bb_slp_scalar_cost): Likewise.
        * tree-vect-stmts.c (vectorizable_bswap): Also perform
        costing for SLP operation.

2021-02-04  Martin Liska  <mliska@suse.cz>

        * doc/extend.texi: Mention -mprefer-vector-width in target
        attributes.

2021-02-03  Martin Sebor  <msebor@redhat.com>

        PR tree-optimization/98937
        * tree-ssa-strlen.c (strlen_dom_walker::~strlen_dom_walker): Define.
        Flush pointer_query cache.

2021-02-03  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/genfusion.pl (gen_2logical): Add missing
        fixes based on patch review.
        * config/rs6000/fusion.md: Regenerate file.

2021-02-03  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/t-rs6000: Comment out auto generation of
        fusion.md for now.

2021-02-03  Andrew Stubbs  <ams@codesourcery.com>

        * config/gcn/gcn-opts.h (enum processor_type): Add PROCESSOR_GFX908.
        * config/gcn/gcn.c (gcn_omp_device_kind_arch_isa): Add gfx908.
        (output_file_start): Add gfx908.
        * config/gcn/gcn.opt (gpu_type): Add gfx908.
        * config/gcn/t-gcn-hsa (MULTILIB_OPTIONS): Add march=gfx908.
        (MULTILIB_DIRNAMES): Add gfx908.
        * config/gcn/mkoffload.c (EF_AMDGPU_MACH_AMDGCN_GFX908): New define.
        (main): Recognize gfx908.
        * config/gcn/t-omp-device: Add gfx908.

2021-02-03  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add
        [su]mlsl_hi_lane[q] builtin macro generators.
        * config/aarch64/aarch64-simd.md
        (aarch64_<su>mlsl_hi_lane<mode>_insn): Define.
        (aarch64_<su>mlsl_hi_lane<mode>): Define.
        (aarch64_<su>mlsl_hi_laneq<mode>_insn): Define.
        (aarch64_<su>mlsl_hi_laneq<mode>): Define.
        * config/aarch64/arm_neon.h (vmlsl_high_lane_s16): Use RTL
        builtin instead of inline asm.
        (vmlsl_high_lane_s32): Likewise.
        (vmlsl_high_lane_u16): Likewise.
        (vmlsl_high_lane_u32): Likewise.
        (vmlsl_high_laneq_s16): Likewise.
        (vmlsl_high_laneq_s32): Likewise.
        (vmlsl_high_laneq_u16): Likewise.
        (vmlsl_high_laneq_u32): Likewise.
        (vmlal_high_laneq_u32): Likewise.

2021-02-03  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add
        [su]mlal_hi_lane[q] builtin generator macros.
        * config/aarch64/aarch64-simd.md
        (aarch64_<su>mlal_hi_lane<mode>_insn): Define.
        (aarch64_<su>mlal_hi_lane<mode>): Define.
        (aarch64_<su>mlal_hi_laneq<mode>_insn): Define.
        (aarch64_<su>mlal_hi_laneq<mode>): Define.
        * config/aarch64/arm_neon.h (vmlal_high_lane_s16): Use RTL
        builtin instead of inline asm.
        (vmlal_high_lane_s32): Likewise.
        (vmlal_high_lane_u16): Likewise.
        (vmlal_high_lane_u32): Likewise.
        (vmlal_high_laneq_s16): Likewise.
        (vmlal_high_laneq_s32): Likewise.
        (vmlal_high_laneq_u16): Likewise.
        (vmlal_high_laneq_u32): Likewise.

2021-02-03  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlsl_hi_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_<su>mlsl_hi_n<mode>_insn):
        Define.
        (aarch64_<su>mlsl_hi_n<mode>): Define.
        * config/aarch64/arm_neon.h (vmlsl_high_n_s16): Use RTL builtin
        instead of inline asm.
        (vmlsl_high_n_s32): Likewise.
        (vmlsl_high_n_u16): Likewise.
        (vmlsl_high_n_u32): Likewise.

2021-02-03  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlal_hi_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_<su>mlal_hi_n<mode>_insn):
        Define.
        (aarch64_<su>mlal_hi_n<mode>): Define.
        * config/aarch64/arm_neon.h (vmlal_high_n_s16): Use RTL builtin
        instead of inline asm.
        (vmlal_high_n_s32): Likewise.
        (vmlal_high_n_u16): Likewise.
        (vmlal_high_n_u32): Likewise.

2021-02-03  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add RTL builtin
        generator macros.
        * config/aarch64/aarch64-simd.md (*aarch64_<su>mlal_hi<mode>):
        Rename to...
        (aarch64_<su>mlal_hi<mode>_insn): This.
        (aarch64_<su>mlal_hi<mode>): Define.
        * config/aarch64/arm_neon.h (vmlal_high_s8): Use RTL builtin
        instead of inline asm.
        (vmlal_high_s16): Likewise.
        (vmlal_high_s32): Likewise.
        (vmlal_high_u8): Likewise.
        (vmlal_high_u16): Likewise.
        (vmlal_high_u32): Likewise.

2021-02-03  Ilya Leoshkevich  <iii@linux.ibm.com>

        * lra-spills.c (remove_pseudos): Call lra_update_insn_recog_data()
        after calling alter_subreg() on a (mem).

2021-02-03  Martin Liska  <mliska@suse.cz>

        PR lto/98912
        * lto-streamer-out.c (produce_lto_section): Fill up missing
        padding.
        * lto-streamer.h (struct lto_section): Add _padding field.

2021-02-03  Richard Biener  <rguenther@suse.de>

        * lto-streamer.c (lto_get_section_name): Free temporary
        buffer.
        * tree-loop-distribution.c
        (loop_distribution::merge_dep_scc_partitions): Free edge data.

2021-02-03  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/97487
        * ifcvt.c (noce_can_force_operand): New function.
        (noce_emit_move_insn): Use it.
        (noce_try_sign_mask): Likewise.  Formatting fix.

2021-02-03  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/97971
        * lra-constraints.c (process_alt_operands): For inline asm, don't call
        fatal_insn, but instead return false.

2021-02-03  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98287
        * config/i386/mmx.md (<insn><mode>3): For shifts don't enable expander
        for V1DImode.

2021-02-03  Tamar Christina  <tamar.christina@arm.com>

        PR tree-optimization/98928
        * tree-vect-loop.c (vect_analyze_loop_2): Change
        STMT_VINFO_SLP_VECT_ONLY to STMT_VINFO_SLP_VECT_ONLY_PATTERN.
        * tree-vect-slp-patterns.c (complex_pattern::build): Likewise.
        * tree-vectorizer.h (STMT_VINFO_SLP_VECT_ONLY_PATTERN): New.
        (class _stmt_vec_info): Add slp_vect_pattern_only_p.

2021-02-02  Richard Biener  <rguenther@suse.de>

        * gimple-loop-interchange.cc (prepare_data_references):
        Release vectors.
        * gimple-loop-jam.c (tree_loop_unroll_and_jam): Likewise.
        * tree-ssa-loop-im.c (hoist_memory_references): Likewise.
        * tree-vect-stmts.c (vectorizable_condition): Do not
        allocate vectors.
        (vectorizable_comparison): Likewise.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (ursqrte): Define builtin.
        * config/aarch64/aarch64-simd.md (aarch64_ursqrte<mode>): New pattern.
        * config/aarch64/arm_neon.h (vrsqrte_u32): Reimplement using builtin.
        (vrsqrteq_u32): Likewise.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sqxtun2): Define builtin.
        * config/aarch64/aarch64-simd.md (aarch64_sqxtun2<mode>_le): Define.
        (aarch64_sqxtun2<mode>_be): Likewise.
        (aarch64_sqxtun2<mode>): Likewise.
        * config/aarch64/arm_neon.h (vqmovun_high_s16): Reimplement using builtin.
        (vqmovun_high_s32): Likewise.
        (vqmovun_high_s64): Likewise.
        * config/aarch64/iterators.md (UNSPEC_SQXTUN2): Define.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (bfdot_lane, bfdot_laneq): Use
        AUTO_FP flags.
        (bfmlalb_lane, bfmlalt_lane, bfmlalb_lane_q, bfmlalt_lane_q): Use FP flags.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (fcmla_lane0, fcmla_lane90,
        fcmla_lane180, fcmla_lane270, fcmlaq_lane0, fcmlaq_lane90, fcmlaq_lane180,
        fcmlaq_lane270, scvtf, ucvtf, fcvtzs, fcvtzu, scvtfsi, scvtfdi, ucvtfsi,
        ucvtfdi, fcvtzshf, fcvtzuhf, fmlal_lane_low, fmlsl_lane_low,
        fmlal_laneq_low, fmlsl_laneq_low, fmlalq_lane_low, fmlslq_lane_low,
        fmlalq_laneq_low, fmlslq_laneq_low, fmlal_lane_high, fmlsl_lane_high,
        fmlal_laneq_high, fmlsl_laneq_high, fmlalq_lane_high, fmlslq_lane_high,
        fmlalq_laneq_high, fmlslq_laneq_high): Use FP flags.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-builtins.c (FLAG_LOAD): Define.
        * config/aarch64/aarch64-simd-builtins.def (ld1x2, ld2, ld3, ld4, ld2r,
        ld3r, ld4r, ld1, ld1x3, ld1x4): Use LOAD flags.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (combine, zip1, zip2,
        uzp1, uzp2, trn1, trn2, simd_bsl): Use AUTO_FP flags.

2021-02-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (clrsb, clz, ctz, popcount,
        vec_smult_lane_, vec_smlal_lane_, vec_smult_laneq_, vec_smlal_laneq_,
        vec_umult_lane_, vec_umlal_lane_, vec_umult_laneq_, vec_umlal_laneq_,
        ashl, sshl, ushl, srshl, urshl, sdot_lane, udot_lane, sdot_laneq,
        udot_laneq, usdot_lane, usdot_laneq, sudot_lane, sudot_laneq, ashr,
        ashr_simd, lshr, lshr_simd, srshr_n, urshr_n, ssra_n, usra_n, srsra_n,
        ursra_n, sshll_n, ushll_n, sshll2_n, ushll2_n, ssri_n, usri_n, ssli_n,
        ssli_n, usli_n, bswap, rbit, simd_bsl, eor3q, rax1q, xarq, bcaxq): Use
        NONE builtin flags.

2021-02-02  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98848
        * tree-vect-patterns.c (vect_recog_over_widening_pattern): Punt if
        STMT_VINFO_DEF_TYPE (last_stmt_info) is vect_reduction_def.

2021-02-02  Kito Cheng  <kito.cheng@sifive.com>

        PR target/98743
        * expr.c: Check mode before calling store_expr.

2021-02-02  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/iterators.md (supf): Remove VORNQ_S and VORNQ_U.
        (VORNQ): Remove.
        * config/arm/mve.md (mve_vornq_s<mode>): New entry for vorn
        instruction using expression ior.
        (mve_vornq_u<mode>): New expander.
        (mve_vornq_f<mode>): Use ior code instead of unspec.
        * config/arm/unspecs.md (VORNQ_S, VORNQ_U, VORNQ_F): Remove.

2021-02-02  Alexandre Oliva  <oliva@adacore.com>

        * tree-nested.c (convert_nonlocal_reference_op): Move
        current_function_decl restore after re-gimplification.
        (convert_local_reference_op): Likewise.

2021-02-01  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (rshrn, rshrn2):
        Define builtins.
        * config/aarch64/aarch64-simd.md (aarch64_rshrn<mode>_insn_le):
        Define.
        (aarch64_rshrn<mode>_insn_be): Likewise.
        (aarch64_rshrn<mode>): Likewise.
        (aarch64_rshrn2<mode>_insn_le): Likewise.
        (aarch64_rshrn2<mode>_insn_be): Likewise.
        (aarch64_rshrn2<mode>): Likewise.
        * config/aarch64/aarch64.md (unspec): Add UNSPEC_RSHRN.
        * config/aarch64/arm_neon.h (vrshrn_high_n_s16): Reimplement
        using builtin.
        (vrshrn_high_n_s32): Likewise.
        (vrshrn_high_n_s64): Likewise.
        (vrshrn_high_n_u16): Likewise.
        (vrshrn_high_n_u32): Likewise.
        (vrshrn_high_n_u64): Likewise.
        (vrshrn_n_s16): Likewise.
        (vrshrn_n_s32): Likewise.
        (vrshrn_n_s64): Likewise.
        (vrshrn_n_u16): Likewise.
        (vrshrn_n_u32): Likewise.
        (vrshrn_n_u64): Likewise.

2021-02-01  Sergei Trofimovich  <siarheit@google.com>

        PR tree-optimization/98499
        * ipa-modref.c (analyze_ssa_name_flags): treat RVO
        conservatively and assume all possible side-effects.

2021-02-01  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (vec_unpacks_hi,
        vec_unpacku_hi_): Define builtins.
        * config/aarch64/arm_neon.h (vmovl_high_s8): Reimplement using
        builtin.
        (vmovl_high_s16): Likewise.
        (vmovl_high_s32): Likewise.
        (vmovl_high_u8): Likewise.
        (vmovl_high_u16): Likewise.
        (vmovl_high_u32): Likewise.

2021-02-01  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sabdl, uabdl):
        Define builtins.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>abdl<mode>): New
        pattern.
        * config/aarch64/aarch64.md (unspec): Define UNSPEC_SABDL,
        UNSPEC_UABDL.
        * config/aarch64/arm_neon.h (vabdl_s8): Reimplemet using
        builtin.
        (vabdl_s16): Likewise.
        (vabdl_s32): Likewise.
        (vabdl_u8): Likewise.
        (vabdl_u16): Likewise.
        (vabdl_u32): Likewise.
        * config/aarch64/iterators.md (ABDL): New int iterator.
        (sur): Handle UNSPEC_SABDL, UNSPEC_UABDL.

2021-02-01  Martin Sebor  <msebor@redhat.com>

        * tree.h (BLOCK_VARS): Add comment.
        (BLOCK_SUBBLOCKS): Same.
        (BLOCK_SUPERCONTEXT): Same.
        (BLOCK_ABSTRACT_ORIGIN): Same.
        (inlined_function_outer_scope_p): Same.

2021-02-01  Martin Sebor  <msebor@redhat.com>

        PR middle-end/97172
        * attribs.c (attr_access::free_lang_data): Define new function.
        * attribs.h (attr_access::free_lang_data): Declare new function.

2021-02-01  Richard Biener  <rguenther@suse.de>

        * vec.h (auto_vec::auto_vec): Add memory stat parameters
        and pass them on.
        * bitmap.h (auto_bitmap::auto_bitmap): Likewise.

2021-02-01  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_<su>mlal_n<mode>,
        aarch64_<su>mlsl<mode>, aarch64_<su>mlsl_n<mode>): Flip mult operands.

2021-02-01  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/98863
        * config/i386/i386-features.c (convert_scalars_to_vector):
        Set DF_RD_PRUNE_DEAD_DEFS.

2021-01-31  Eric Botcazou  <ebotcazou@adacore.com>

        * system.h (SIZE_MAX): Define if not already defined.

2021-01-30  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/genfusion.pl (gen_2logical): New function to
        generate patterns for logical-logical fusion.
        * config/rs6000/fusion.md: Regenerated patterns.
        * config/rs6000/rs6000-cpus.def: Add
        OPTION_MASK_P10_FUSION_2LOGICAL.
        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Enable logical-logical fusion for p10.
        * config/rs6000/rs6000.opt: Add -mpower10-fusion-2logical.

2021-01-30  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.opt: Add periods to new AIX options.

2021-01-30  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/rs6000.opt (mabi=vec-extabi): New.
        (mabi=vec-default): New.
        * config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Define
        __EXTABI__ for AIX Vector extended ABI.
        * config/rs6000/rs6000.c (rs6000_debug_reg_global): Print AIX Vector
        extabi info.
        (conditional_register_usage): If AIX vec_extabi enabled, vs20-vs31
        are non-volatile.
        * doc/invoke.texi (PowerPC mabi): Add AIX vec-extabi and vec-default.

2021-01-30  Jakub Jelinek  <jakub@redhat.com>

        * config/i386/i386-features.c (remove_partial_avx_dependency): Clear
        DF_DEFER_INSN_RESCAN after calling df_process_deferred_rescans.

2021-01-29  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/97701
        * lra-constraints.c (in_class_p): Don't narrow class only for REG
        or MEM.

2021-01-29  Will Schmidt  <will_schmidt@vnet.ibm.com>

        * config/rs6000/rs6000-call.c (rs6000_expand_binup_builtin): Add
        clauses for CODE_FOR_vsx_xvcvuxddp_scale and
        CODE_FOR_vsx_xvcvsxddp_scale to the parameter checking code.

2021-01-29  Andrew MacLeod  <amacleod@redhat.com>

        PR tree-optimization/98866
        * gimple-range-gori.h (gori_compute:set_range_invariant): New.
        * gimple-range-gori.cc (gori_map::set_range_invariant): New.
        (gori_map::m_maybe_invariant): Rename from all_outgoing.
        (gori_map::gori_map): Rename all_outgoing to m_maybe_invariant.
        (gori_map::is_export_p): Ditto.
        (gori_map::calculate_gori): Ditto.
        (gori_compute::set_range_invariant): New.
        * gimple-range.cc (gimple_ranger::range_of_stmt): Set range
        invariant for pointers evaluating to [1, +INF].

2021-01-29  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/98863
        * config/i386/i386-features.c (remove_partial_avx_dependency):
        Do not perform DF analysis.
        (pass_data_remove_partial_avx_dependency): Remove
        TODO_df_finish.

2021-01-29  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mull_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_<su>mull_n<mode>):
        Define.
        * config/aarch64/arm_neon.h (vmull_n_s16): Use RTL builtin
        instead of inline asm.
        (vmull_n_s32): Likewise.
        (vmull_n_u16): Likewise.
        (vmull_n_u32): Likewise.

2021-01-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sabdl2, uabdl2):
        Define builtins.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>abdl2<mode>_3):
        Rename to...
        (aarch64_<sur>abdl2<mode>): ... This.
        (<sur>sadv16qi): Adjust use of above.
        * config/aarch64/arm_neon.h (vabdl_high_s8): Reimplement using
        builtin.
        (vabdl_high_s16): Likewise.
        (vabdl_high_s32): Likewise.
        (vabdl_high_u8): Likewise.
        (vabdl_high_u16): Likewise.
        (vabdl_high_u32): Likewise.

2021-01-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sabal2): Define
        builtin.
        (uabal2): Likewise.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>abal2<mode>): New
        pattern.
        * config/aarch64/aarch64.md (unspec): Add UNSPEC_SABAL2 and
        UNSPEC_UABAL2.
        * config/aarch64/arm_neon.h (vabal_high_s8): Reimplement using
        builtin.
        (vabal_high_s16): Likewise.
        (vabal_high_s32): Likewise.
        (vabal_high_u8): Likewise.
        (vabal_high_u16): Likewise.
        (vabal_high_u32): Likewise.
        * config/aarch64/iterators.md (ABAL2): New mode iterator.
        (sur): Handle UNSPEC_SABAL2, UNSPEC_UABAL2.

2021-01-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sabal): Define
        builtin.
        (uabal): Likewise.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>abal<mode>_4):
        Rename to...
        (aarch64_<sur>abal<mode>): ... This
        (<sur>sadv16qi): Adust use of the above.
        * config/aarch64/arm_neon.h (vabal_s8): Reimplement using
        builtin.
        (vabal_s16): Likewise.
        (vabal_s32): Likewise.
        (vabal_u8): Likewise.
        (vabal_u16): Likewise.
        (vabal_u32): Likewise.

2021-01-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (saddlv, uaddlv):
        Define builtins.
        * config/aarch64/aarch64-simd.md (aarch64_<su>addlv<mode>):
        Define.
        * config/aarch64/arm_neon.h (vaddlv_s8): Reimplement using
        builtin.
        (vaddlv_s16): Likewise.
        (vaddlv_u8): Likewise.
        (vaddlv_u16): Likewise.
        (vaddlvq_s8): Likewise.
        (vaddlvq_s16): Likewise.
        (vaddlvq_s32): Likewise.
        (vaddlvq_u8): Likewise.
        (vaddlvq_u16): Likewise.
        (vaddlvq_u32): Likewise.
        (vaddlv_s32): Likewise.
        (vaddlv_u32): Likewise.
        * config/aarch64/iterators.md (VDQV_L): New mode iterator.
        (unspec): Add UNSPEC_SADDLV, UNSPEC_UADDLV.
        (Vwstype): New mode attribute.
        (Vwsuf): Likewise.
        (VWIDE_S): Likewise.
        (USADDLV): New int iterator.
        (su): Handle UNSPEC_SADDLV, UNSPEC_UADDLV.

2021-01-29  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlsl_lane[q]
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_vec_<su>mlsl_lane<Qlane>):
        Define.
        * config/aarch64/arm_neon.h (vmlsl_lane_s16): Use RTL builtin
        instead of inline asm.
        (vmlsl_lane_s32): Likewise.
        (vmlsl_lane_u16): Likewise.
        (vmlsl_lane_u32): Likewise.
        (vmlsl_laneq_s16): Likewise.
        (vmlsl_laneq_s32): Likewise.
        (vmlsl_laneq_u16): Likewise.
        (vmlsl_laneq_u32): Likewise.

2021-01-29  Richard Biener  <rguenther@suse.de>

        * doc/invoke.texi (--param max-gcse-memory): Document unit
        of size.
        * gcse.c (gcse_or_cprop_is_too_expensive): Adjust.
        * params.opt (--param max-gcse-memory): Adjust default and
        document unit of size.

2021-01-29  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/98863
        * gcse.c (gcse_or_cprop_is_too_expensive): Use unsigned
        HOST_WIDE_INT for the memory estimate.

2021-01-29  Bin Cheng  <bin.cheng@linux.alibaba.com>
            Richard Biener  <rguenther@suse.de>

        PR tree-optimization/97627
        * tree-ssa-loop-niter.c (number_of_iterations_exit_assumptions):
        Do not analyze fake edges.

2021-01-29  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/98144
        * df.h (df_mir_bb_info): Add con_visited member.
        * df-problems.c (df_mir_alloc): Initialize con_visited,
        do not fully populate IN and OUT.
        (df_mir_reset): Likewise.
        (df_mir_confluence_0): Set con_visited.
        (df_mir_confluence_n): Properly handle implicitely
        fully populated IN and OUT as designated by con_visited
        and update con_visited accordingly.

2021-01-29  Jakub Jelinek  <jakub@redhat.com>

        PR target/98849
        * config/arm/vec-common.md (mve_vshlq_<supf><mode>,
        vashl<mode>3, vashr<mode>3, vlshr<mode>3): Add
        && !TARGET_REALLY_IWMMXT to conditions.

2021-01-29  Jakub Jelinek  <jakub@redhat.com>

        PR debug/98331
        * cfgbuild.c (find_bb_boundaries): Reset debug_insn when seeing
        a BARRIER.

2021-01-28  Marek Polacek  <polacek@redhat.com>

        PR c++/94775
        * stor-layout.c (finalize_type_size): If we reset TYPE_USER_ALIGN in
        the main variant, maybe reset it in its variants too.
        * tree.c (check_base_type): Return true only if TYPE_USER_ALIGN match.
        (check_aligned_type): Check if TYPE_USER_ALIGN match.

2021-01-28  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/98730
        * config/arm/arm.c (arm_rtx_costs_internal): Adjust cost of vector
        of constant zero for comparisons.

2021-01-28  Michael Meissner  <meissner@linux.ibm.com>

        * config/rs6000/rs6000.c (rs6000_mangle_decl_assembler_name): Add
        support for mapping built-in function names for long double
        built-in functions if long double is IEEE 128-bit.

2021-01-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlsl_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_<su>mlsl_n<mode>):
        Define.
        * config/aarch64/arm_neon.h (vmlsl_n_s16): Use RTL builtin
        instead of inline asm.
        (vmlsl_n_s32): Likewise.
        (vmlsl_n_u16): Likewise.
        (vmlsl_n_u32): Likewise.

2021-01-28  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlal_n
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (aarch64_<su>mlal_n<mode>):
        Define.
        * config/aarch64/arm_neon.h (vmlal_n_s16): Use RTL builtin
        instead of inline asm.
        (vmlal_n_s32): Likewise.
        (vmlal_n_u16): Likewise.
        (vmlal_n_u32): Likewise.

2021-01-28  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (shrn2): Define
        builtin.
        * config/aarch64/aarch64-simd.md (aarch64_shrn2<mode>_insn_le):
        Define.
        (aarch64_shrn2<mode>_insn_be): Likewise.
        (aarch64_shrn2<mode>): Likewise.
        * config/aarch64/arm_neon.h (vshrn_high_n_s16): Reimlplement
        using builtins.
        (vshrn_high_n_s32): Likewise.
        (vshrn_high_n_s64): Likewise.
        (vshrn_high_n_u16): Likewise.
        (vshrn_high_n_u32): Likewise.
        (vshrn_high_n_u64): Likewise.

2021-01-28  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (shrn): Define
        builtin.
        * config/aarch64/aarch64-simd.md (aarch64_shrn<mode>_insn_le):
        Define.
        (aarch64_shrn<mode>_insn_be): Likewise.
        (aarch64_shrn<mode>): Likewise.
        * config/aarch64/arm_neon.h (vshrn_n_s16): Reimplement using
        builtins.
        (vshrn_n_s32): Likewise.
        (vshrn_n_s64): Likewise.
        (vshrn_n_u16): Likewise.
        (vshrn_n_u32): Likewise.
        (vshrn_n_u64): Likewise.
        * config/aarch64/iterators.md (vn_mode): New mode attribute.

2021-01-28  Richard Biener  <rguenther@suse.de>

        PR rtl-optimization/80960
        * dse.c (check_mem_read_rtx): Call get_addr on the
        offsetted address.

2021-01-28  Xionghu Luo  <luoxhu@linux.ibm.com>
            David Edelsohn  <dje.gcc@gmail.com>

        PR target/98799
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
        Don't generate VIEW_CONVERT_EXPR for fcode ALTIVEC_BUILTIN_VEC_INSERT
        when -m32.
        * config/rs6000/rs6000-protos.h (rs6000_expand_vector_set_var):
        Delete.
        * config/rs6000/rs6000.c (rs6000_expand_vector_set): Remove the
        wrapper call rs6000_expand_vector_set_var for cleanup.  Call
        rs6000_expand_vector_set_var_p9 and rs6000_expand_vector_set_var_p8
        directly.
        (rs6000_expand_vector_set_var): Delete.
        (rs6000_expand_vector_set_var_p9): Make static.
        (rs6000_expand_vector_set_var_p8): Make static.

2021-01-28  Xing GUO  <higuoxing@gmail.com>

        * common/config/riscv/riscv-common.c
        (riscv_subset_list::parsing_subset_version): Fix -march option parsing
        when `p` extension exists.

2021-01-27  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/97684
        * ira.c (ira): Call ira_set_pseudo_classes before
        update_equiv_regs when it is necessary.

2021-01-27  Jakub Jelinek  <jakub@redhat.com>

        PR target/98853
        * config/aarch64/aarch64.md (*aarch64_bfxilsi_uxtw): Use
        %w0, %w1 and %2 instead of %0, %1 and %2.

2021-01-27  Aaron Sawdey  <acsawdey@linux.ibm.com>

        * config/rs6000/genfusion.pl: New script to generate
        define_insn_and_split patterns so combine can arrange fused
        instructions next to each other.
        * config/rs6000/fusion.md: New file, generated fused instruction
        patterns for combine.
        * config/rs6000/predicates.md (const_m1_to_1_operand): New predicate.
        (non_update_memory_operand): New predicate.
        * config/rs6000/rs6000-cpus.def: Add OPTION_MASK_P10_FUSION and
        OPTION_MASK_P10_FUSION_LD_CMPI to ISA_3_1_MASKS_SERVER and
        POWERPC_MASKS.
        * config/rs6000/rs6000-protos.h (address_is_non_pfx_d_or_x): Add
        prototype.
        * config/rs6000/rs6000.c (rs6000_option_override_internal):
        Automatically set OPTION_MASK_P10_FUSION and
        OPTION_MASK_P10_FUSION_LD_CMPI if target is power10.
        (rs600_opt_masks): Allow -mpower10-fusion
        in function attributes.
        (address_is_non_pfx_d_or_x): New function.
        * config/rs6000/rs6000.h: Add MASK_P10_FUSION.
        * config/rs6000/rs6000.md: Include fusion.md.
        * config/rs6000/rs6000.opt: Add -mpower10-fusion
        and -mpower10-fusion-ld-cmpi.
        * config/rs6000/t-rs6000: Add dependencies involving fusion.md.

2021-01-27  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add [su]mlal
        builtin generator macros.
        * config/aarch64/aarch64-simd.md (*aarch64_<su>mlal<mode>):
        Rename to...
        (aarch64_<su>mlal<mode>): This.
        * config/aarch64/arm_neon.h (vmlal_s8): Use RTL builtin
        instead of inline asm.
        (vmlal_s16): Likewise.
        (vmlal_s32): Likewise.
        (vmlal_u8): Likewise.
        (vmlal_u16): Likewise.
        (vmlal_u32): Likewise.

2021-01-27  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98854
        * tree-vect-slp.c (vect_build_slp_tree_2): Also build
        PHIs from scalars when the number of CTORs matches the
        number of children.

2021-01-27  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add mls_n builtin
        generator macro.
        * config/aarch64/aarch64-simd.md (*aarch64_mls_elt_merge<mode>):
        Rename to...
        (aarch64_mls_n<mode>): This.
        * config/aarch64/arm_neon.h (vmls_n_s16): Use RTL builtin
        instead of asm.
        (vmls_n_s32): Likewise.
        (vmls_n_u16): Likewise.
        (vmls_n_u32): Likewise.
        (vmlsq_n_s16): Likewise.
        (vmlsq_n_s32): Likewise.
        (vmlsq_n_u16): Likewise.
        (vmlsq_n_u32): Likewise.

2021-01-27  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add mls builtin
        generator macro.
        * config/aarch64/arm_neon.h (vmls_s8): Use RTL builtin rather
        than asm.
        (vmls_s16): Likewise.
        (vmls_s32): Likewise.
        (vmls_u8): Likewise.
        (vmls_u16): Likewise.
        (vmls_u32): Likewise.
        (vmlsq_s8): Likewise.
        (vmlsq_s16): Likewise.
        (vmlsq_s32): Likewise.
        (vmlsq_u8): Likewise.
        (vmlsq_u16): Likewise.
        (vmlsq_u32): Likewise.

2021-01-27  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add mla_n builtin
        generator macro.
        * config/aarch64/aarch64-simd.md (*aarch64_mla_elt_merge<mode>):
        Rename to...
        (aarch64_mla_n<mode>): This.
        * config/aarch64/arm_neon.h (vmla_n_s16): Use RTL builtin
        instead of asm.
        (vmla_n_s32): Likewise.
        (vmla_n_u16): Likewise.
        (vmla_n_u32): Likewise.
        (vmlaq_n_s16): Likewise.
        (vmlaq_n_s32): Likewise.
        (vmlaq_n_u16): Likewise.
        (vmlaq_n_u32): Likewise.

2021-01-27  liuhongt  <hongtao.liu@intel.com>

        PR target/98833
        * config/i386/sse.md (sse2_gt<mode>3): Drop !TARGET_XOP in condition.
        (*sse2_eq<mode>3): Ditto.

2021-01-27  Jakub Jelinek  <jakub@redhat.com>

        * tree-pass.h (PROP_trees): Rename to ...
        (PROP_gimple): ... this.
        * cfgexpand.c (pass_data_expand): Replace PROP_trees with PROP_gimple.
        * passes.c (execute_function_dump, execute_function_todo,
        execute_one_ipa_transform_pass, execute_one_pass): Likewise.
        * varpool.c (ctor_for_folding): Likewise.

2021-01-27  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/97260
        * varpool.c: Include tree-pass.h.
        (ctor_for_folding): In GENERIC return DECL_INITIAL for TREE_READONLY
        non-TREE_SIDE_EFFECTS automatic variables.

2021-01-26  Paul Fee  <paul.f.fee@gmail.com>

        * doc/cpp.texi (__cplusplus): Document value for -std=c++23
        or -std=gnu++23.
        * doc/invoke.texi: Document -std=c++23 and -std=gnu++23.
        * dwarf2out.c (highest_c_language): Recognise C++20 and C++23.
        (gen_compile_unit_die): Recognise C++23.

2021-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR bootstrap/98839
        * dwarf2asm.c (dw2_assemble_integer): Cast DWARF2_ADDR_SIZE to int
        in comparison.

2021-01-26  Jakub Jelinek  <jakub@redhat.com>

        PR target/98681
        * config/aarch64/aarch64.c (aarch64_mask_and_shift_for_ubfiz_p):
        Use UINTVAL (shft_amnt) and UINTVAL (mask) instead of INTVAL (shft_amnt)
        and INTVAL (mask).  Add && INTVAL (mask) > 0 condition.

2021-01-26  Richard Biener  <rguenther@suse.de>

        * gimple-pretty-print.c (dump_binary_rhs): Handle
        VEC_WIDEN_{PLUS,MINUS}_{LO,HI}_EXPR.

2021-01-26  Richard Biener  <rguenther@suse.de>

        PR middle-end/98726
        * tree.h (vector_cst_int_elt): Remove.
        * tree.c (vector_cst_int_elt): Use poly_wide_int for computations,
        make static.

2021-01-26  Andrew Stubbs  <ams@codesourcery.com>

        * config/gcn/gcn.c (gcn_expand_reduc_scalar): Use move instructions
        for V64DFmode min/max reductions.

2021-01-26  Jakub Jelinek  <jakub@redhat.com>

        * dwarf2asm.c (dw2_assemble_integer): Handle size twice as large
        as DWARF2_ADDR_SIZE if x is not a scalar int by emitting it as
        two halves, one with x and the other with const0_rtx, ordered
        depending on endianity.

2021-01-26  Alexandre Oliva  <oliva@adacore.com>

        * gimplify.c (gimplify_decl_expr): Skip asan marking calls for
        temporaries not seen in binding block, and not about to be
        added as gimple variables.

2021-01-25  Martin Sebor  <msebor@redhat.com>

        PR c++/98646
        * tree-ssa-ccp.c (pass_post_ipa_warn::execute): Adjust warning text.

2021-01-25  Martin Liska  <mliska@suse.cz>

        * value-prof.c (get_nth_most_common_value): Use %s instead
        of %qs string.

2021-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR debug/98811
        * configure.ac (HAVE_AS_GDWARF_5_DEBUG_FLAG): Only define if
        readelf -wi is able to read the emitted .debug_info back.
        * configure: Regenerated.

2021-01-25  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/98739
        * common.opt: Add missing sign symbol.
        * value-prof.c (get_nth_most_common_value): Restore handling
        of PROFILE_REPRODUCIBILITY_PARALLEL_RUNS and
        PROFILE_REPRODUCIBILITY_MULTITHREADED.

2021-01-25  Richard Biener  <rguenther@suse.de>

        PR middle-end/98807
        * tree.c (vector_element_bits): Always use precision of
        the element type for boolean vectors.

2021-01-25  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/rtems.h (STARTFILE_SPEC): Remove qnolinkcmds.
        (ENDFILE_SPEC): Evaluate qnolinkcmds.

2021-01-25  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/rtems.h (STARTFILE_SPEC): Remove nostdlib and
        nostartfiles handling since this is already done by
        LINK_COMMAND_SPEC.  Evaluate qnolinkcmds.
        (ENDFILE_SPEC): Remove nostdlib and nostartfiles handling since this
        is already done by LINK_COMMAND_SPEC.
        (LIB_SPECS): Remove nostdlib and nodefaultlibs handling since
        this is already done by LINK_COMMAND_SPEC.  Remove qnolinkcmds
        evaluation.

2021-01-25  Jakub Jelinek  <jakub@redhat.com>

        PR testsuite/98771
        * fold-const-call.c (host_size_t_cst_p): Renamed to ...
        (size_t_cst_p): ... this.  Check and store unsigned HOST_WIDE_INT
        value rather than host size_t.
        (fold_const_call): Change type of s2 from size_t to
        unsigned HOST_WIDE_INT.  Use size_t_cst_p instead of
        host_size_t_cst_p.  For strncmp calls, pass MIN (s2, SIZE_MAX)
        instead of s2 as last argument.

2021-01-25  Tamar Christina  <tamar.christina@arm.com>

        * config/arm/iterators.md (rotsplit1, rotsplit2, conj_op, fcmac1,
        VCMLA_OP, VCMUL_OP): New.
        * config/arm/mve.md (mve_vcmlaq<mve_rot><mode>): Support vec_dup 0.
        * config/arm/neon.md (cmul<conj_op><mode>3): New.
        * config/arm/unspecs.md (UNSPEC_VCMLA_CONJ, UNSPEC_VCMLA180_CONJ,
        UNSPEC_VCMUL_CONJ): New.
        * config/arm/vec-common.md (cmul<conj_op><mode>3, arm_vcmla<rot><mode>,
        cml<fcmac1><conj_op><mode>4): New.

2021-01-23  Jakub Jelinek  <jakub@redhat.com>

        PR testsuite/97301
        * config/rs6000/mmintrin.h (__m64): Add __may_alias__ attribute.

2021-01-22  Jonathan Wright  <jonathan.wright@arm.com>

        * config/aarch64/aarch64-simd-builtins.def: Add mla builtin
        generator macro.
        * config/aarch64/arm_neon.h (vmla_s8): Use RTL builtin rather
        than asm.
        (vmla_s16): Likewise.
        (vmla_s32): Likewise.
        (vmla_u8): Likewise.
        (vmla_u16): Likewise.
        (vmla_u32): Likewise.
        (vmlaq_s8): Likewise.
        (vmlaq_s16): Likewise.
        (vmlaq_s32): Likewise.
        (vmlaq_u8): Likewise.
        (vmlaq_u16): Likewise.
        (vmlaq_u32): Likewise.

2021-01-22  David Malcolm  <dmalcolm@redhat.com>

        * doc/invoke.texi (GCC_EXTRA_DIAGNOSTIC_OUTPUT): Add @findex
        directive.

2021-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR debug/98796
        * dwarf2out.c (output_file_names): For -gdwarf-5, if there are no
        filenames to emit, still emit the required 0 index directory and
        filename entries that match DW_AT_comp_dir and DW_AT_name of the
        compilation unit.

2021-01-22  Marek Polacek  <polacek@redhat.com>

        PR c++/98545
        * doc/invoke.texi: Update C++ ABI Version 15 description.

2021-01-22  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        PR tree-optimization/98766
        * tree-ssa-math-opts.c (convert_mult_to_fma): Use maybe_le when
        comparing against type size with param_avoid_fma_max_bits.

2021-01-22  Richard Biener  <rguenther@suse.de>

        PR middle-end/98793
        * tree.c (vector_element_bits): Key single-bit bool vector on
        integer mode rather than not vector mode.

2021-01-22  Xionghu Luo  <luoxhu@linux.ibm.com>

        PR target/98093
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
        Generate ARRAY_REF(VIEW_CONVERT_EXPR) for P8 and later
        platforms.
        * config/rs6000/rs6000.c (rs6000_expand_vector_set_var): Update
        to call different path for P8 and P9.
        (rs6000_expand_vector_set_var_p9): New function.
        (rs6000_expand_vector_set_var_p8): New function.

2021-01-22  Xionghu Luo  <luoxhu@linux.ibm.com>

        PR target/79251
        PR target/98065
        * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
        Ajdust variable index vec_insert from address dereference to
        ARRAY_REF(VIEW_CONVERT_EXPR) tree expression.
        * config/rs6000/rs6000-protos.h (rs6000_expand_vector_set_var):
        New declaration.
        * config/rs6000/rs6000.c (rs6000_expand_vector_set_var): New function.

2021-01-22  Martin Liska  <mliska@suse.cz>

        PR gcov-profile/98739
        * profile.c (compute_value_histograms): Drop time profile for
        -fprofile-reproducible=multithreaded.

2021-01-22  Nathan Sidwell  <nathan@acm.org>

        * gcc.c (process_command): Don't check OPT_SPECIAL_input_file
        existence here.

2021-01-22  Richard Biener  <rguenther@suse.de>

        PR middle-end/98773
        * tree-data-ref.c (initalize_matrix_A): Revert previous
        change, retaining failing on HOST_WIDE_INT_MIN CHREC_RIGHT.

2021-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/90248
        * match.pd (X cmp 0.0 ? 1.0 : -1.0 -> copysign(1, +-X),
        X cmp 0.0 ? -1.0 : +1.0 -> copysign(1, -+X)): Remove
        simplifications.
        (X * (X cmp 0.0 ? 1.0 : -1.0) -> +-abs(X),
        X * (X cmp 0.0 ? -1.0 : 1.0) -> +-abs(X)): New simplifications.

2021-01-22  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98255
        * tree-dfa.c (get_ref_base_and_extent): For ARRAY_REFs, sign
        extend index - low_bound from sizetype's precision rather than index
        precision.
        (get_addr_base_and_unit_offset_1): Likewise.
        * tree-ssa-sccvn.c (ao_ref_init_from_vn_reference): Likewise.
        * gimple-fold.c (fold_const_aggregate_ref_1): Likewise.

2021-01-22  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98786
        * tree-ssa-phiopt.c (factor_out_conditional_conversion): Avoid
        adding new uses of abnormals.  Verify we deal with a conditional
        conversion.

2021-01-22  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/98636
        * optc-save-gen.awk: Add arm_fp16_format to checked_options.

2021-01-22  liuhongt  <hongtao.liu@intel.com>

        PR target/96891
        PR target/98348
        * config/i386/sse.md (VI_128_256): New mode iterator.
        (*avx_cmp<mode>3_1, *avx_cmp<mode>3_2, *avx_cmp<mode>3_3,
         *avx_cmp<mode>3_4, *avx2_eq<mode>3, *avx2_pcmp<mode>3_1,
         *avx2_pcmp<mode>3_2, *avx2_gt<mode>3): New
        define_insn_and_split to lower avx512 vector comparison to avx
        version when dest is vector.
        (*<avx512>_cmp<mode>3,*<avx512>_cmp<mode>3,*<avx512>_ucmp<mode>3):
        define_insn_and_split for negating the comparison result.
        * config/i386/predicates.md (float_vector_all_ones_operand):
        New predicate.
        * config/i386/i386-expand.c (ix86_expand_sse_movcc): Use
        general NOT operator without UNSPEC_MASKOP.

2021-01-21  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/98777
        * lra-int.h (lra_pmode_pseudo): New extern.
        * lra.c (lra_pmode_pseudo): New global.
        (lra): Set it up.
        * lra-eliminations.c (eliminate_regs_in_insn): Use it.

2021-01-21  Ilya Leoshkevich  <iii@linux.ibm.com>

        * fwprop.c (fwprop_propagation::classify_result): Allow
        (subreg (mem)) simplifications.

2021-01-21  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_sqdml<SBINQOPS:as>l<mode>):
        Split into...
        (aarch64_sqdmlal<mode>): ... This...
        (aarch64_sqdmlsl<mode>): ... And this.
        (aarch64_sqdml<SBINQOPS:as>l_lane<mode>): Split into...
        (aarch64_sqdmlal_lane<mode>): ... This...
        (aarch64_sqdmlsl_lane<mode>): ... And this.
        (aarch64_sqdml<SBINQOPS:as>l_laneq<mode>): Split into...
        (aarch64_sqdmlsl_laneq<mode>): ... This...
        (aarch64_sqdmlal_laneq<mode>):  ... And this.
        (aarch64_sqdml<SBINQOPS:as>l_n<mode>): Split into...
        (aarch64_sqdmlsl_n<mode>): ... This...
        (aarch64_sqdmlal_n<mode>): ... And this.
        (aarch64_sqdml<SBINQOPS:as>l2<mode>_internal): Split into...
        (aarch64_sqdmlal2<mode>_internal): ... This...
        (aarch64_sqdmlsl2<mode>_internal): ... And this.

2021-01-21  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/arm_mve.h (__arm_vcmpneq_s8): Fix return type.

2021-01-21  Andrea Corallo  <andrea.corallo@arm.com>

        PR target/96372
        * doc/sourcebuild.texi (arm_thumb2_no_arm_v8_1_lob): Document.

2021-01-21  liuhongt  <hongtao.liu@intel.com>

        PR rtl-optimization/98694
        * regcprop.c (copy_value): If SRC had been assigned a mode
        narrower than the copy, we can't link DEST into the chain even
        they have same hard_regno_nregs(i.e. HImode/SImode in i386
        backend).

2021-01-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_get_lane<mode>):
        Convert to define_insn_and_split.  Split into simple move when moving
        bottom element.

2021-01-20  Segher Boessenkool  <segher@kernel.crashing.org>

        * config/rs6000/rs6000.c (rs6000_emit_le_vsx_store): Change assert.
        Adjust comment.  Simplify code.

2021-01-20  Jakub Jelinek  <jakub@redhat.com>

        PR debug/98765
        * dwarf2out.c (reset_indirect_string): Also reset indirect strings
        with DW_FORM_line_strp form.
        (prune_unused_types_update_strings): Don't add into debug_str_hash
        indirect strings with DW_FORM_line_strp form.
        (adjust_name_comp_dir): New function.
        (dwarf2out_finish): Call it on CU DIEs after resetting
        debug_line_str_hash.

2021-01-20  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/98722
        * lra-eliminations.c (eliminate_regs_in_insn): Check that target
        has no 3-op add insn to transform insns containing two pluses.

2021-01-20  Richard Biener  <rguenther@suse.de>

        * hwint.h (add_hwi): New function.
        (mul_hwi): Likewise.
        * tree-data-ref.c (initialize_matrix_A): Properly translate
        tree constants and avoid HOST_WIDE_INT_MIN.
        (lambda_matrix_row_add): Avoid undefined integer overflow
        and return true on such overflow.
        (lambda_matrix_right_hermite): Handle overflow from
        lambda_matrix_row_add gracefully.  Simplify previous fix.
        (analyze_subscript_affine_affine): Likewise.

2021-01-20  Eugene Rozenfeld  <erozen@microsoft.com>

        PR tree-optimization/96674
        * match.pd: New patterns: x < y || y == XXX_MIN --> x <= y - 1
        x >= y && y != XXX_MIN --> x > y - 1

2021-01-20  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/98535
        * tree-vect-slp.c (duplicate_and_interleave): Use quick_grow_cleared.
        If the high and low permutes are the same, remove the high permutes
        from the working set and only continue with the low ones.

2021-01-20  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98721
        * builtins.c (access_ref::inform_access): Don't assume
        SSA_NAME_IDENTIFIER must be non-NULL.  Print messages about
        object whenever allocfn is NULL, rather than only when DECL_P
        is true.  Use %qE instead of %qD for that.  Formatting fixes.

2021-01-20  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98758
        * tree-data-ref.c (int_divides_p): Use lambda_int arguments.
        (lambda_matrix_right_hermite): Avoid undefinedness with
        signed integer abs and multiplication.
        (analyze_subscript_affine_affine): Use lambda_int.

2021-01-20  David Malcolm  <dmalcolm@redhat.com>

        PR debug/98751
        * dwarf2out.c (output_line_info): Rename static variable
        "generation", moving it out of the function to...
        (output_line_info_generation): New.
        (init_sections_and_labels): Likewise, renaming the variable to...
        (init_sections_and_labels_generation): New.
        (dwarf2out_c_finalize): Reset the new variables.

2021-01-19  Martin Sebor  <msebor@redhat.com>

        PR middle-end/98664
        * tree-ssa-live.c (remove_unused_scope_block_p): Keep scopes for
        all functions, even if they're not declared artificial or inline.
        * tree.c (tree_inlined_location): Use macro expansion location
        only if scope traversal fails to expose one.

2021-01-19  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/92294
        * alias.c (compare_base_symbol_refs): Take an extra parameter
        and add the distance between two symbols to it.  Enshrine in
        comments that -1 means "either 0 or 1, but we can't tell
        which at compile time".
        (memrefs_conflict_p): Update call accordingly.
        (rtx_equal_for_memref_p): Likewise.  Take the distance between symbols
        into account.

2021-01-19  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (sqshl, uqshl,
        sqrshl, uqrshl, sqadd, uqadd, sqsub, uqsub, suqadd, usqadd, sqmovn,
        uqmovn, sqxtn2, uqxtn2, sqabs, sqneg, sqdmlal, sqdmlsl, sqdmlal_lane,
        sqdmlsl_lane, sqdmlal_laneq, sqdmlsl_laneq, sqdmlal_n, sqdmlsl_n,
        sqdmlal2, sqdmlsl2, sqdmlal2_lane, sqdmlsl2_lane, sqdmlal2_laneq,
        sqdmlsl2_laneq, sqdmlal2_n, sqdmlsl2_n, sqdmull, sqdmull_lane,
        sqdmull_laneq, sqdmull_n, sqdmull2, sqdmull2_lane, sqdmull2_laneq,
        sqdmull2_n, sqdmulh, sqrdmulh, sqdmulh_lane, sqdmulh_laneq,
        sqrdmulh_lane, sqrdmulh_laneq, sqshrun_n, sqrshrun_n, sqshrn_n,
        uqshrn_n, sqrshrn_n, uqrshrn_n, sqshlu_n, sqshl_n, uqshl_n, sqrdmlah,
        sqrdmlsh, sqrdmlah_lane, sqrdmlsh_lane, sqrdmlah_laneq, sqrdmlsh_laneq,
        sqmovun): Use NONE flags.

2021-01-19  Richard Biener  <rguenther@suse.de>

        PR ipa/98330
        * ipa-modref.c (analyze_stmt): Only record a summary for a
        direct call.

2021-01-19  Richard Biener  <rguenther@suse.de>

        PR middle-end/98638
        * tree-ssanames.c (fini_ssanames): Zero SSA_NAME_DEF_STMT.

2021-01-19  Daniel Hellstrom  <daniel@gaisler.com>

        * config/sparc/rtemself.h (TARGET_OS_CPP_BUILTINS): Add
        built-in define __FIX_LEON3FT_TN0018.

2021-01-19  Richard Biener  <rguenther@suse.de>

        PR ipa/97673
        * tree-inline.c (tree_function_versioning): Set input_location
        to UNKNOWN_LOCATION throughout the function.

2021-01-19  Tobias Burnus  <tobias@codesourcery.com>

        PR fortran/98476
        * omp-low.c (lower_omp_target): Handle nonpointer is_device_ptr.

2021-01-19  Martin Jambor  <mjambor@suse.cz>

        PR ipa/98690
        * ipa-sra.c (ssa_name_only_returned_p): New parameter fun.  Check
        whether non-call exceptions allow removal of a statement.
        (isra_analyze_call): Pass the appropriate function to
        ssa_name_only_returned_p.

2021-01-19  Geng Qi  <gengqi@linux.alibaba.com>

        * config/riscv/arch-canonicalize (longext_sort): New function for
         sorting 'multi-letter'.
        * config/riscv/multilib-generator: Adjusting the loop of 'alt' in
        'alts'. The 'arch' may not be the first of 'alts'.
        (_expand_combination): Add underline for the 'ext' without '*'.
        This is because, a single-letter extension can always be treated well
        with a '_' prefix, but it cannot be separated out if it is appended
        to a multi-letter.

2021-01-18  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/97847
        * ira.c (ira): Skip abnormal critical edge splitting.

2021-01-18  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98727
        * tree-ssa-math-opts.c (match_arith_overflow): Fix up computation of
        second .MUL_OVERFLOW operand for signed multiplication with overflow
        checking if the second operand of multiplication is not constant.

2021-01-18  David Edelsohn  <dje.gcc@gmail.com>

        * doc/invoke.texi (-gdwarf): TPF defaults to version 2 and AIX
        defaults to version 4.

2021-01-18  David Malcolm  <dmalcolm@redhat.com>

        * attribs.h (fndecl_dealloc_argno): New decl.
        * builtins.c (call_dealloc_argno): Split out second half of
        function into...
        (fndecl_dealloc_argno): New.
        * doc/extend.texi (Common Function Attributes): Document the
        interaction between the analyzer and the malloc attribute.
        * doc/invoke.texi (Static Analyzer Options): Likewise.

2021-01-17  David Edelsohn  <dje.gcc@gmail.com>

        * config/rs6000/aix71.h (SUBTARGET_OVERRIDE_OPTIONS): Override
        dwarf_version to 4.
        * config/rs6000/aix72.h (SUBTARGET_OVERRIDE_OPTIONS): Same.

2021-01-17  Martin Jambor  <mjambor@suse.cz>

        PR ipa/98222
        * cgraph.c (clone_of_p): Check also former_clone_of as we climb
        the clone tree.

2021-01-17  Mark Wielaard  <mark@klomp.org>

        * common.opt (gdwarf-): Init(5).
        * doc/invoke.texi (-gdwarf): Document default to 5.

2021-01-16  Kwok Cheung Yeung  <kcy@codesourcery.com>

        * builtin-types.def
        (BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT): Rename
        to...
        (BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT_PTR):
        ...this.  Add extra argument.
        * gimplify.c (omp_default_clause): Ensure that event handle is
        firstprivate in a task region.
        (gimplify_scan_omp_clauses): Handle OMP_CLAUSE_DETACH.
        (gimplify_adjust_omp_clauses): Likewise.
        * omp-builtins.def (BUILT_IN_GOMP_TASK): Change function type to
        BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT_PTR.
        * omp-expand.c (expand_task_call): Add GOMP_TASK_FLAG_DETACH to flags
        if detach clause specified.  Add detach argument when generating
        call to GOMP_task.
        * omp-low.c (scan_sharing_clauses): Setup data environment for detach
        clause.
        (finish_taskreg_scan): Move field for variable containing the event
        handle to the front of the struct.
        * tree-core.h (enum omp_clause_code): Add OMP_CLAUSE_DETACH.  Fix
        ordering.
        * tree-nested.c (convert_nonlocal_omp_clauses): Handle
        OMP_CLAUSE_DETACH clause.
        (convert_local_omp_clauses): Handle OMP_CLAUSE_DETACH clause.
        * tree-pretty-print.c (dump_omp_clause): Handle OMP_CLAUSE_DETACH.
        * tree.c (omp_clause_num_ops): Add entry for OMP_CLAUSE_DETACH.
        Fix ordering.
        (omp_clause_code_name): Add entry for OMP_CLAUSE_DETACH.  Fix
        ordering.
        (walk_tree_1): Handle OMP_CLAUSE_DETACH.

2021-01-16  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/nios2/t-rtems: Reset all MULTILIB_* variables.  Shorten
        multilib directory names.  Use MULTILIB_REQUIRED instead of
        MULTILIB_EXCEPTIONS.  Add -mhw-mul -mhw-mulx -mhw-div
        -mcustom-fpu-cfg=fph2 multilib.

2021-01-16  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/nios2/nios2.c (NIOS2_FPU_CONFIG_NUM): Adjust value.
        (nios2_init_fpu_configs): Provide register values for new
        -mcustom-fpu-cfg=fph2 option variant.
        * doc/invoke.texi (-mcustom-fpu-cfg=fph2): Document new option
        variant.

2021-01-16  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        * config/nios2/nios2.c (nios2_custom_check_insns): Remove
        custom instruction warnings.

2021-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96669
        * match.pd ((CST << x) & 1 -> x == 0): New simplification.

2021-01-16  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96271
        * passes.def: Pass false argument to first two pass_cd_dce
        instances and true to last instance.  Add comment that
        last instance rewrites no longer addressed locals.
        * tree-ssa-dce.c (pass_cd_dce): Add update_address_taken_p member and
        initialize it.
        (pass_cd_dce::set_pass_param): New method.
        (pass_cd_dce::execute): Return TODO_update_address_taken from
        last cd_dce instance.

2021-01-15  Carl Love  <cel@us.ibm.com>

        * config/rs6000/altivec.h (vec_mulh, vec_div, vec_dive, vec_mod):
        New defines.
        * config/rs6000/altivec.md (VIlong): Move define to file vsx.md.
        * config/rs6000/rs6000-builtin.def (DIVES_V4SI, DIVES_V2DI,
        DIVEU_V4SI, DIVEU_V2DI, DIVS_V4SI, DIVS_V2DI, DIVU_V4SI,
        DIVU_V2DI, MODS_V2DI, MODS_V4SI, MODU_V2DI, MODU_V4SI,
        MULHS_V2DI, MULHS_V4SI, MULHU_V2DI, MULHU_V4SI, MULLD_V2DI):
        Add builtin define.
        (MULH, DIVE, MOD):  Add new BU_P10_OVERLOAD_2 definitions.
        * config/rs6000/rs6000-call.c (VSX_BUILTIN_VEC_DIV,
        VSX_BUILTIN_VEC_DIVE, P10_BUILTIN_VEC_MOD, P10_BUILTIN_VEC_MULH):
        New overloaded definitions.
        (builtin_function_type) [P10V_BUILTIN_DIVEU_V4SI,
        P10V_BUILTIN_DIVEU_V2DI, P10V_BUILTIN_DIVU_V4SI,
        P10V_BUILTIN_DIVU_V2DI, P10V_BUILTIN_MODU_V2DI,
        P10V_BUILTIN_MODU_V4SI, P10V_BUILTIN_MULHU_V2DI,
        P10V_BUILTIN_MULHU_V4SI]: Add case
        statement for builtins.
        * config/rs6000/rs6000.md (bits): Add new attribute sizes V4SI, V2DI.
        * config/rs6000/vsx.md (VIlong): Moved from config/rs6000/altivec.md.
        (UNSPEC_VDIVES, UNSPEC_VDIVEU): New unspec definitions.
        (vsx_mul_v2di): Add if TARGET_POWER10 statement.
        (vsx_udiv_v2di): Add if TARGET_POWER10 statement.
        (dives_<mode>, diveu_<mode>, div<mode>3, uvdiv<mode>3,
        mods_<mode>, modu_<mode>, mulhs_<mode>, mulhu_<mode>, mulv2di3):
        Add define_insn, mode is VIlong.
        * doc/extend.texi (vec_mulh, vec_mul, vec_div, vec_dive, vec_mod):
        Add builtin descriptions.

2021-01-15  Eric Botcazou  <ebotcazou@adacore.com>

        * final.c (final_start_function_1): Reset force_source_line.

2021-01-15  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96669
        * match.pd (((1 << A) & 1) != 0 -> A == 0,
        ((1 << A) & 1) == 0 -> A != 0): Generalize for 1s replaced by
        possibly different power of two constants and to right shift too.

2021-01-15  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96681
        * match.pd ((x < 0) ^ (y < 0) to (x ^ y) < 0): New simplification.
        ((x >= 0) ^ (y >= 0) to (x ^ y) < 0): Likewise.
        ((x < 0) ^ (y >= 0) to (x ^ y) >= 0): Likewise.
        ((x >= 0) ^ (y < 0) to (x ^ y) >= 0): Likewise.

2021-01-15  Alexandre Oliva  <oliva@adacore.com>

        * opts.c (gen_command_line_string): Exclude -dumpbase-ext.

2021-01-15  Tamar Christina  <tamar.christina@arm.com>

        * config/aarch64/aarch64-simd.md (cml<fcmac1><conj_op><mode>4,
        cmul<conj_op><mode>3): New.
        * config/aarch64/iterators.md (UNSPEC_FCMUL,
        UNSPEC_FCMUL180, UNSPEC_FCMLA_CONJ, UNSPEC_FCMLA180_CONJ,
        UNSPEC_CMLA_CONJ, UNSPEC_CMLA180_CONJ, UNSPEC_CMUL, UNSPEC_CMUL180,
        FCMLA_OP, FCMUL_OP, conj_op, rotsplit1, rotsplit2, fcmac1, sve_rot1,
        sve_rot2, SVE2_INT_CMLA_OP, SVE2_INT_CMUL_OP, SVE2_INT_CADD_OP): New.
        (rot): Add UNSPEC_FCMUL, UNSPEC_FCMUL180.
        (rot_op): Renamed to conj_op.
        * config/aarch64/aarch64-sve.md (cml<fcmac1><conj_op><mode>4,
        cmul<conj_op><mode>3): New.
        * config/aarch64/aarch64-sve2.md (cml<fcmac1><conj_op><mode>4,
        cmul<conj_op><mode>3): New.

2021-01-15  David Malcolm  <dmalcolm@redhat.com>

        PR bootstrap/98696
        * diagnostic.c
        (selftest::test_print_parseable_fixits_bytes_vs_display_columns):
        Escape the tempfile name when constructing the expected output.

2021-01-15  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (*aarch64_<su>mlsl_hi<mode>):
        Rename to...
        (aarch64_<su>mlsl_hi<mode>): ... This.
        (aarch64_<su>mlsl_hi<mode>): Define.
        (*aarch64_<su>mlsl<mode): Rename to...
        (aarch64_<su>mlsl<mode): ... This.
        * config/aarch64/aarch64-simd-builtins.def (smlsl, umlsl,
        smlsl_hi, umlsl_hi): Define builtins.
        * config/aarch64/arm_neon.h (vmlsl_high_s8, vmlsl_high_s16,
        vmlsl_high_s32, vmlsl_high_u8, vmlsl_high_u16, vmlsl_high_u32,
        vmlsl_s8, vmlsl_s16, vmlsl_s32, vmlsl_u8,
        vmlsl_u16, vmlsl_u32): Reimplement with builtins.

2021-01-15  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386-c.c (ix86_target_macros):
        Use cpp_define_formatted for __SIZEOF_FLOAT80__ definition.

2021-01-15  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/88836
        * config.gcc (aarch64*-*-*): Add aarch64-cc-fusion.o to extra_objs.
        * Makefile.in (RTL_SSA_H): New variable.
        * config/aarch64/t-aarch64 (aarch64-cc-fusion.o): New rule.
        * config/aarch64/aarch64-protos.h (make_pass_cc_fusion): Declare.
        * config/aarch64/aarch64-passes.def: Add pass_cc_fusion after
        pass_combine.
        * config/aarch64/aarch64-cc-fusion.cc: New file.

2021-01-15  Richard Sandiford  <richard.sandiford@arm.com>

        * recog.h (insn_change_watermark::~insn_change_watermark): Avoid
        calling cancel_changes for changes that no longer exist.

2021-01-15  Richard Sandiford  <richard.sandiford@arm.com>

        * rtl-ssa/functions.h (function_info::ref_defs): Rename to...
        (function_info::reg_defs): ...this.
        * rtl-ssa/member-fns.inl (function_info::ref_defs): Rename to...
        (function_info::reg_defs): ...this.

2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/71233
        * config/arm/arm_neon.h (vceqz_p64, vceqq_p64, vceqzq_p64): New.

2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        Revert:
        2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/71233
        * config/arm/arm_neon.h (vceqz_p64, vceqq_p64, vceqzq_p64): New.

2021-01-15  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/96376
        * tree-vect-stmts.c (get_load_store_type): Disregard alignment
        for VMAT_INVARIANT.

2021-01-15  Martin Liska  <mliska@suse.cz>

        * doc/install.texi: Document that some tests need pytest module.
        * doc/sourcebuild.texi: Likewise.

2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/71233
        * config/arm/arm_neon.h (vceqz_p64, vceqq_p64, vceqzq_p64): New.

2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/mve.md (mve_vshrq_n_s<mode>_imm): New entry.
        (mve_vshrq_n_u<mode>_imm): Likewise.
        * config/arm/neon.md (vashr<mode>3, vlshr<mode>3): Move to ...
        * config/arm/vec-common.md: ... here.

2021-01-15  Christophe Lyon  <christophe.lyon@linaro.org>

        * config/arm/mve.md (mve_vshlq_<supf><mode>): Move to
        vec-commond.md.
        * config/arm/neon.md (vashl<mode>3): Delete.
        * config/arm/vec-common.md (mve_vshlq_<supf><mode>): New.
        (vasl<mode>3): New expander.

2021-01-15  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98685
        * tree-vect-slp.c (vect_schedule_slp_node): Refactor handling
        of vector extern defs.

2021-01-14  David Malcolm  <dmalcolm@redhat.com>

        PR jit/98586
        * diagnostic.c (diagnostic_kind_text): Break out this array
        from...
        (diagnostic_build_prefix): ...here.
        (fancy_abort): Detect when diagnostic_initialize has not yet been
        called and fall back to a minimal implementation of printing the
        ICE, rather than segfaulting in internal_error.

2021-01-14  David Malcolm  <dmalcolm@redhat.com>

        * diagnostic.c (diagnostic_initialize): Eliminate
        parseable_fixits_p in favor of initializing extra_output_kind from
        GCC_EXTRA_DIAGNOSTIC_OUTPUT.
        (convert_column_unit): New function, split out from...
        (diagnostic_converted_column): ...this.
        (print_parseable_fixits): Add "column_unit" and "tabstop" params.
        Use them to call convert_column_unit on the column values.
        (diagnostic_report_diagnostic): Eliminate conditional on
        parseable_fixits_p in favor of a switch statement on
        extra_output_kind, passing the appropriate values to the new
        params of print_parseable_fixits.
        (selftest::test_print_parseable_fixits_none): Update for new
        params of print_parseable_fixits.
        (selftest::test_print_parseable_fixits_insert): Likewise.
        (selftest::test_print_parseable_fixits_remove): Likewise.
        (selftest::test_print_parseable_fixits_replace): Likewise.
        (selftest::test_print_parseable_fixits_bytes_vs_display_columns):
        New.
        (selftest::diagnostic_c_tests): Call it.
        * diagnostic.h (enum diagnostics_extra_output_kind): New.
        (diagnostic_context::parseable_fixits_p): Delete field in favor
        of...
        (diagnostic_context::extra_output_kind): ...this new field.
        * doc/invoke.texi (Environment Variables): Add
        GCC_EXTRA_DIAGNOSTIC_OUTPUT.
        * opts.c (common_handle_option): Update handling of
        OPT_fdiagnostics_parseable_fixits for change to diagnostic_context
        fields.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp-patterns.c (class complex_operations_pattern,
        complex_operations_pattern::matches,
        complex_operations_pattern::recognize,
        complex_operations_pattern::build): New.
        (slp_patterns): Use it.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * internal-fn.def (COMPLEX_FMS, COMPLEX_FMS_CONJ): New.
        * optabs.def (cmls_optab, cmls_conj_optab): New.
        * doc/md.texi: Document them.
        * tree-vect-slp-patterns.c (class complex_fms_pattern,
        complex_fms_pattern::matches, complex_fms_pattern::recognize,
        complex_fms_pattern::build): New.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * internal-fn.def (COMPLEX_FMA, COMPLEX_FMA_CONJ): New.
        * optabs.def (cmla_optab, cmla_conj_optab): New.
        * doc/md.texi: Document them.
        * tree-vect-slp-patterns.c (vect_match_call_p,
        class complex_fma_pattern, vect_slp_reset_pattern,
        complex_fma_pattern::matches, complex_fma_pattern::recognize,
        complex_fma_pattern::build): New.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * internal-fn.def (COMPLEX_MUL, COMPLEX_MUL_CONJ): New.
        * optabs.def (cmul_optab, cmul_conj_optab): New.
        * doc/md.texi: Document them.
        * tree-vect-slp-patterns.c (vect_match_call_complex_mla,
        vect_normalize_conj_loc, is_eq_or_top, vect_validate_multiplication,
        vect_build_combine_node, class complex_mul_pattern,
        complex_mul_pattern::matches, complex_mul_pattern::recognize,
        complex_mul_pattern::build): New.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp.c (optimize_load_redistribution_1): New.
        (optimize_load_redistribution, vect_is_slp_load_node): New.
        (vect_match_slp_patterns): Use it.

2021-01-14  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp-patterns.c (complex_add_pattern::build):
        Elide nodes.

2021-01-14  Thomas Schwinge  <thomas@codesourcery.com>

        * config/gcn/mkoffload.c (main): Create an offload image only in
        64-bit configurations.

2021-01-14  H.J. Lu  <hjl.tools@gmail.com>

        PR target/98667
        * config/i386/i386-options.c (ix86_option_override_internal):
        Issue an error for -fcf-protection with CF_BRANCH when compiling
        for 32-bit non-TARGET_CMOV targets.

2021-01-14  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98671
        * config/i386/i386-options.c (ix86_valid_target_attribute_inner_p):
        Remove declaration and initialization of shadow variable "ret".
        (ix86_option_override_internal): Remove delcaration of
        shadow variable "i".  Redeclare shadowed variable to unsigned.
        * common/config/i386/i386-common.c (pta_size): Redeclare to unsigned.
        * config/i386/i386-builtins.c (get_builtin_code_for_version):
        Update for redeclaration.
        * config/i386/i386.h (pta_size): Ditto.

2021-01-14  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98674
        * tree-data-ref.c (base_supports_access_fn_components_p): New.
        (initialize_data_dependence_relation): For two bases without
        possible access fns resort to type size equality when determining
        shape compatibility.

2021-01-14  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

        PR target/66791
        * config/arm/arm_neon.h: Replace calls to __builtin_vcge* by
        <=, >= operators in vcle and vcge intrinsics respectively.
        * config/arm/arm_neon_builtins.def: Remove entry for
        vcge and vcgeu.

2021-01-14  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98671
        * config/i386/i386-options.c (ix86_function_specific_save):
        Remove redundant assignment to opts->x_ix86_branch_cost.
        * config/i386/i386.c (ix86_prefetch_sse):
        Rename from x86_prefetch_sse.  Update all uses.
        * config/i386/i386.h: Update for rename.
        * config/i386/i386-options.h: Ditto.

2021-01-14  Jakub Jelinek  <jakub@redhat.com>

        PR target/98670
        * config/i386/sse.md (*sse4_1_zero_extendv8qiv8hi2_3,
        *sse4_1_zero_extendv4hiv4si2_3, *sse4_1_zero_extendv2siv2di2_3):
        Use Bm instead of m for non-avx.  Add isa attribute.

2021-01-14  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96688
        * match.pd (~(X >> Y) -> ~X >> Y): New simplification if
        ~X can be simplified.

2021-01-14  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-stmts.c (vect_model_load_cost): Account for unused
        IFN_LOAD_LANES results.

2021-01-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_<su>xtl<mode>):
        Define.
        (aarch64_xtn<mode>): Likewise.
        * config/aarch64/aarch64-simd-builtins.def (sxtl, uxtl, xtn):
        Define
        builtins.
        * config/aarch64/arm_neon.h (vmovl_s8): Reimplement using
        builtin.
        (vmovl_s16): Likewise.
        (vmovl_s32): Likewise.
        (vmovl_u8): Likewise.
        (vmovl_u16): Likewise.
        (vmovl_u32): Likewise.
        (vmovn_s16): Likewise.
        (vmovn_s32): Likewise.
        (vmovn_s64): Likewise.
        (vmovn_u16): Likewise.
        (vmovn_u32): Likewise.
        (vmovn_u64): Likewise.

2021-01-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_<su>qxtn2<mode>_le):
        Define.
        (aarch64_<su>qxtn2<mode>_be): Likewise.
        (aarch64_<su>qxtn2<mode>): Likewise.
        * config/aarch64/aarch64-simd-builtins.def (sqxtn2, uqxtn2):
        Define builtins.
        * config/aarch64/iterators.md (SAT_TRUNC): Define code_iterator.
        (su): Handle ss_truncate and us_truncate.
        * config/aarch64/arm_neon.h (vqmovn_high_s16): Reimplement using
        builtin.
        (vqmovn_high_s32): Likewise.
        (vqmovn_high_s64): Likewise.
        (vqmovn_high_u16): Likewise.
        (vqmovn_high_u32): Likewise.
        (vqmovn_high_u64): Likewise.

2021-01-14  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_xtn2<mode>_le):
        Define.
        (aarch64_xtn2<mode>_be): Likewise.
        (aarch64_xtn2<mode>): Likewise.
        * config/aarch64/aarch64-simd-builtins.def (xtn2): Define
        builtins.
        * config/aarch64/arm_neon.h (vmovn_high_s16): Reimplement using
        builtins.
        (vmovn_high_s32): Likewise.
        (vmovn_high_s64): Likewise.
        (vmovn_high_u16): Likewise.
        (vmovn_high_u32): Likewise.
        (vmovn_high_u64): Likewise.

2021-01-13  Stafford Horne  <shorne@gmail.com>

        * config/or1k/or1k.h (ASM_PREFERRED_EH_DATA_FORMAT): New macro.

2021-01-13  Stafford Horne  <shorne@gmail.com>

        * config/or1k/linux.h (TARGET_ASM_FILE_END): Define macro.

2021-01-13  Stafford Horne  <shorne@gmail.com>

        * config/or1k/or1k.h (TARGET_CPU_CPP_BUILTINS): Add builtin
          define for __or1k_hard_float__.

2021-01-13  Stafford Horne  <shorne@gmail.com>

        * config/or1k/or1k.h (NO_PROFILE_COUNTERS): Define as 1.
        (PROFILE_HOOK): Define to call _mcount.
        (FUNCTION_PROFILER): Change from abort to no-op.

2021-01-13  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96691
        * match.pd ((~X | C) ^ D -> (X | C) ^ (~D ^ C),
        (~X & C) ^ D -> (X & C) ^ (D ^ C)): New simplifications if
        (~D ^ C) or (D ^ C) can be simplified.

2021-01-13  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/92645
        * match.pd (BIT_FIELD_REF to conversion): Delay canonicalization
        until after vector lowering.

2021-01-13  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (fnma<mode>4): Extend from SVE_FULL_I
        to SVE_I.
        (@aarch64_pred_fnma<mode>, cond_fnma<mode>, *cond_fnma<mode>_2)
        (*cond_fnma<mode>_4, *cond_fnma<mode>_any): Likewise.

2021-01-13  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (fma<mode>4): Extend from SVE_FULL_I
        to SVE_I.
        (@aarch64_pred_fma<mode>, cond_fma<mode>, *cond_fma<mode>_2)
        (*cond_fma<mode>_4, *cond_fma<mode>_any): Likewise.

2021-01-13  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/92645
        * tree-vect-slp.c (vect_build_slp_tree_1): Relax supported
        BIT_FIELD_REF argument.
        (vect_build_slp_tree_2): Record the desired vector type
        on the external vector def.
        (vectorizable_slp_permutation): Handle required punning
        of existing vector defs.

2021-01-13  Richard Sandiford  <richard.sandiford@arm.com>

        * rtl-ssa/accesses.h (def_lookup): Fix order of comparison results.

2021-01-13  Richard Sandiford  <richard.sandiford@arm.com>

        * config/sh/sh.md (movsf_ie): Remove operands[2] test.

2021-01-13  Samuel Thibault  <samuel.thibault@ens-lyon.org>

        * config.gcc [$target == *-*-gnu*]: Enable
        'default_gnu_indirect_function'.

2021-01-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/95905
        * optabs.c (expand_vec_perm_const): Don't force v0 and v1 into
        registers before calling targetm.vectorize.vec_perm_const, only after
        that.
        * config/i386/i386-expand.c (ix86_vectorize_vec_perm_const): Handle
        two argument permutation when one operand is zero vector and only
        after that force operands into registers.
        * config/i386/sse.md (*avx2_zero_extendv16qiv16hi2_1): New
        define_insn_and_split pattern.
        (*avx512bw_zero_extendv32qiv32hi2_1): Likewise.
        (*avx512f_zero_extendv16hiv16si2_1): Likewise.
        (*avx2_zero_extendv8hiv8si2_1): Likewise.
        (*avx512f_zero_extendv8siv8di2_1): Likewise.
        (*avx2_zero_extendv4siv4di2_1): Likewise.
        * config/mips/mips.c (mips_vectorize_vec_perm_const): Force operands
        into registers.
        * config/arm/arm.c (arm_vectorize_vec_perm_const): Likewise.
        * config/sparc/sparc.c (sparc_vectorize_vec_perm_const): Likewise.
        * config/ia64/ia64.c (ia64_vectorize_vec_perm_const): Likewise.
        * config/aarch64/aarch64.c (aarch64_vectorize_vec_perm_const): Likewise.
        * config/rs6000/rs6000.c (rs6000_vectorize_vec_perm_const): Likewise.
        * config/gcn/gcn.c (gcn_vectorize_vec_perm_const): Likewise.  Use std::swap.

2021-01-13  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/98455
        * gimple-if-to-switch.cc (condition_info::record_phi_mapping):
        Record also virtual PHIs.
        (pass_if_to_switch::execute): Return TODO_cleanup_cfg only
        conditionally.

2021-01-13  Jonathan Wakely  <jwakely@redhat.com>

        * doc/invoke.texi (C++ Modules): Fix typos.

2021-01-13  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98640
        * tree-ssa-sccvn.c (visit_nary_op): Do not try to
        handle plus or minus from a truncated operand to be
        sign-extended.

2021-01-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/96938
        * config/i386/i386.md (*btr<mode>_1, *btr<mode>_2): New
        define_insn_and_split patterns.
        (splitter after *btr<mode>_2): New splitter.

2021-01-13  Martin Liska  <mliska@suse.cz>

        PR ipa/98652
        * cgraphunit.c (analyze_functions): Remove dead code.

2021-01-13  Qian Jianhua  <qianjh@cn.fujitsu.com>

        * config/aarch64/aarch64-cost-tables.h (a64fx_extra_costs): New.
        * config/aarch64/aarch64.c (a64fx_addrcost_table): New.
        (a64fx_regmove_cost, a64fx_vector_cost): New.
        (a64fx_tunings): Use the new added cost tables.

2021-01-13  Jakub Jelinek  <jakub@redhat.com>

        PR target/95905
        * config/i386/predicates.md (pmovzx_parallel): New predicate.
        * config/i386/sse.md (*sse4_1_zero_extendv8qiv8hi2_3): New
        define_insn_and_split pattern.
        (*sse4_1_zero_extendv4hiv4si2_3): Likewise.
        (*sse4_1_zero_extendv2siv2di2_3): Likewise.

2021-01-13  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn.c (gcn_conditional_register_usage): Remove dead code
        to fix v0 register.

2021-01-13  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn.c (gcn_md_reorg): Fix case where EXEC reg is live
        on entry to a BB.

2021-01-13  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn-valu.md (recip<mode>2<exec>, recip<mode>2): Use unspec
        for reciprocal-approximation instructions.
        (div<mode>3): Use fused multiply-accumulate operations for reciprocal
        refinement and division result.
        * config/gcn/gcn.md (UNSPEC_RCP): New unspec constant.

2021-01-13  Julian Brown  <julian@codesourcery.com>

        * config/gcn/gcn-valu.md (subdf): Rename to...
        (subdf3): This.

2021-01-12  Martin Liska  <mliska@suse.cz>

        * gcov.c (source_info::debug): Fix printf format for 32-bit hosts.

2021-01-12  Andrea Corallo  <andrea.corallo@arm.com>

        * function-abi.h: Fix typo.

2021-01-12  Christophe Lyon  <christophe.lyon@linaro.org>

        PR target/97875
        PR target/97875
        * config/arm/arm.h (ARM_HAVE_NEON_V8QI_LDST): New macro.
        (ARM_HAVE_NEON_V16QI_LDST, ARM_HAVE_NEON_V4HI_LDST): Likewise.
        (ARM_HAVE_NEON_V8HI_LDST, ARM_HAVE_NEON_V2SI_LDST): Likewise.
        (ARM_HAVE_NEON_V4SI_LDST, ARM_HAVE_NEON_V4HF_LDST): Likewise.
        (ARM_HAVE_NEON_V8HF_LDST, ARM_HAVE_NEON_V4BF_LDST): Likewise.
        (ARM_HAVE_NEON_V8BF_LDST, ARM_HAVE_NEON_V2SF_LDST): Likewise.
        (ARM_HAVE_NEON_V4SF_LDST, ARM_HAVE_NEON_DI_LDST): Likewise.
        (ARM_HAVE_NEON_V2DI_LDST): Likewise.
        (ARM_HAVE_V8QI_LDST, ARM_HAVE_V16QI_LDST): Likewise.
        (ARM_HAVE_V4HI_LDST, ARM_HAVE_V8HI_LDST): Likewise.
        (ARM_HAVE_V2SI_LDST, ARM_HAVE_V4SI_LDST, ARM_HAVE_V4HF_LDST): Likewise.
        (ARM_HAVE_V8HF_LDST, ARM_HAVE_V4BF_LDST, ARM_HAVE_V8BF_LDST): Likewise.
        (ARM_HAVE_V2SF_LDST, ARM_HAVE_V4SF_LDST, ARM_HAVE_DI_LDST): Likewise.
        (ARM_HAVE_V2DI_LDST): Likewise.
        * config/arm/mve.md (*movmisalign<mode>_mve_store): New pattern.
        (*movmisalign<mode>_mve_load): New pattern.
        * config/arm/neon.md (movmisalign<mode>): Move to ...
        * config/arm/vec-common.md: ... here.

2021-01-12  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR target/97969
        * lra-eliminations.c (eliminate_regs_in_insn): Add transformation
        of pattern 'plus (plus (hard reg, const), pseudo)'.

2021-01-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98550
        * tree-vect-slp.c (vect_record_max_nunits): Check whether
        the group size is a multiple of the vector element count.
        (vect_build_slp_tree_1): When we need to fail because
        the vector type choosen causes unrolling do so lazily
        without affecting matches only at the end to guide group splitting.

2021-01-12  Martin Liska  <mliska@suse.cz>

        PR c++/97284
        * optc-save-gen.awk: Compare also n_target_save vars with
        strcmp.

2021-01-12  Martin Liska  <mliska@suse.cz>

        * gcov.c (source_info::debug): New.
        (print_usage): Add --debug (-D) option.
        (process_args): Likewise.
        (generate_results): Call src->debug after
        accumulate_line_counts.
        (read_graph_file): Properly assign id for EXIT_BLOCK.
        * profile.c (branch_prob): Dump function body before it is
        instrumented.

2021-01-12  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98629
        * tree-ssa-math-opts.c (arith_overflow_check_p): Don't update use_stmt
        unless returning non-zero.

2021-01-12  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/95731
        * tree-ssa-reassoc.c (optimize_range_tests_cmp_bitwise): Also optimize
        x < 0 && y < 0 && z < 0 into (x | y | z) < 0 for signed x, y, z.
        (optimize_range_tests): Call optimize_range_tests_cmp_bitwise
        only after optimize_range_tests_var_bound.

2021-01-12  Jakub Jelinek  <jakub@redhat.com>

        * configure.ac: Ensure c/Make-lang.in comes first in @all_lang_makefrags@.
        * configure: Regenerated.

2021-01-12  liuhongt  <hongtao.liu@intel.com>

        PR target/98612
        * config/i386/i386-builtins.h (BUILTIN_DESC_SWAP_OPERANDS):
        Deleted.
        * config/i386/i386-expand.c (ix86_expand_sse_comi): Delete
        dead code.

2021-01-12  Alexandre Oliva  <oliva@adacore.com>

        * ssa-iterators.h (end_imm_use_stmt_traverse): Forward
        declare.
        (auto_end_imm_use_stmt_traverse): New struct.
        (FOR_EACH_IMM_USE_STMT): Use it.
        (BREAK_FROM_IMM_USE_STMT, RETURN_FROM_IMM_USE_STMT): Remove,
        along with uses...
        * gimple-ssa-strength-reduction.c: ... here, ...
        * graphite-scop-detection.c: ... here, ...
        * ipa-modref.c, ipa-pure-const.c, ipa-sra.c: ... here, ...
        * tree-predcom.c, tree-ssa-ccp.c: ... here, ...
        * tree-ssa-dce.c, tree-ssa-dse.c: ... here, ...
        * tree-ssa-loop-ivopts.c, tree-ssa-math-opts.c: ... here, ...
        * tree-ssa-phiprop.c, tree-ssa.c: ... here, ...
        * tree-vect-slp.c: ... and here, ...
        * doc/tree-ssa.texi: ... and the example here.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (sdiv_pow2<mode>3): Extend from
        SVE_FULL_I to SVE_I.  Generate an UNSPEC_PRED_X.
        (*sdiv_pow2<mode>3): New pattern.
        (@cond_<sve_int_op><mode>): Extend from SVE_FULL_I to SVE_I.
        Wrap the ASRD in an UNSPEC_PRED_X.
        (*cond_<sve_int_op><mode>_2): Likewise.  Replace the UNSPEC_PRED_X
        predicate with a constant PTRUE, if it isn't already.
        (*cond_<sve_int_op><mode>_z): Replace with...
        (*cond_<sve_int_op><mode>_any): ...this new pattern.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (*cond_bic<mode>_2): Extend from
        SVE_FULL_I to SVE_I.
        (*cond_bic<mode>_any): Likewise.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (<su>mul<mode>3_highpart)
        (@aarch64_pred_<MUL_HIGHPART:optab><mode>): Extend from SVE_FULL_I
        to SVE_I.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (<su>abd<mode>_3): Extend from
        SVE_FULL_I to SVE_I.
        (*aarch64_cond_<su>abd<mode>_2): Likewise.
        (*aarch64_cond_<su>abd<mode>_any): Likewise.
        (@aarch64_pred_<su>abd<mode>): Likewise.  Use UNSPEC_PRED_X
        for the max and min but not for the minus.
        (*aarch64_cond_<su>abd<mode>_3): New pattern.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/iterators.md (SVE_24I): New iterator.
        * config/aarch64/aarch64-sve.md (*aarch64_adr<mode>_shift): Extend from
        SVE_FULL_SDI to SVE_24I.  Use containers rather than elements.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (@cond_<SVE_INT_BINARY:optab><mode>)
        (*cond_<SVE_INT_BINARY:optab><mode>_2): Extend from SVE_FULL_I
        to SVE_I.
        (*cond_<SVE_INT_BINARY:optab><mode>_3): Likewise.
        (*cond_<SVE_INT_BINARY:optab><mode>_any): Likewise.
        (*cond_<SVE_INT_BINARY:optab><mode>_2_const): Likewise.
        (*cond_<SVE_INT_BINARY:optab><mode>_any_const): Likewise.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (<SVE_INT_BINARY_IMM:optab><mode>3)
        (@aarch64_pred_<SVE_INT_BINARY_IMM:optab><mode>)
        (*post_ra_<SVE_INT_BINARY_IMM:optab><mode>3): Extend from SVE_FULL_I
        to SVE_I.

2021-01-11  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (<ASHIFT:optab><mode>3)
        (v<ASHIFT:optab><mode>3, @aarch64_pred_<optab><mode>)
        (*post_ra_v<ASHIFT:optab><mode>3): Extend from SVE_FULL_I to SVE_I.

2021-01-11  Martin Liska  <mliska@suse.cz>

        PR jit/98615
        * symtab-clones.h (clone_info::release): Release
        symtab::m_clones with ggc_delete as it's a GGC memory.

2021-01-11  Matthias Klose  <doko@ubuntu.com>

        * Makefile.in (LINK_PROGRESS): Show the link target.

2021-01-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/91403
        * tree-vect-data-refs.c (vect_analyze_group_access_1): Cap
        single-element interleaving group size at 4096 elements.

2021-01-11  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98526
        * tree-vect-loop.c (vect_model_reduction_cost): Remove costing
        of the actual reduction op for the regular case.
        (vectorizable_reduction): Cost the stmts
        vect_transform_reduction produces here.

2021-01-11  Andreas Krebbel  <krebbel@linux.ibm.com>

        * tree-ssa-forwprop.c (simplify_vector_constructor): For
        big-endian, use UNPACK[_FLOAT]_HI.

2021-01-11  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp-patterns.c (class complex_pattern,
        class complex_add_pattern): Add parameters to matches.
        (complex_add_pattern::build): Free memory.
        (complex_add_pattern::matches): Move validation end of match.
        (complex_add_pattern::recognize): Likewise.

2021-01-11  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp-patterns.c (linear_loads_p): Fix externals.

2021-01-11  Tamar Christina  <tamar.christina@arm.com>

        * tree-vect-slp-patterns.c (is_linear_load_p): Fix ambiguity.

2021-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/95867
        * tree-ssa-math-opts.h: New header.
        * tree-ssa-math-opts.c: Include tree-ssa-math-opts.h.
        (powi_as_mults): No longer static.  Use build_one_cst instead of
        build_real.  Formatting fix.
        * tree-ssa-reassoc.c: Include tree-ssa-math-opts.h.
        (attempt_builtin_powi): Handle multiplication reassociation without
        powi_fndecl using powi_as_mults.
        (reassociate_bb): For integral types don't require
        -funsafe-math-optimizations to call attempt_builtin_powi.

2021-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/95852
        * tree-ssa-math-opts.c (maybe_optimize_guarding_check): Change
        mul_stmts parameter type to vec<gimple *> &.  Before cond_stmt
        allow in the bb any of the stmts in that vector, div_stmt and
        up to 3 cast stmts.
        (arith_cast_equal_p): New function.
        (arith_overflow_check_p): Add cast_stmt argument, handle signed
        multiply overflow checks.
        (match_arith_overflow): Adjust caller.  Handle signed multiply
        overflow checks.

2021-01-11  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/95852
        * tree-ssa-math-opts.c (maybe_optimize_guarding_check): New function.
        (uaddsub_overflow_check_p): Renamed to ...
        (arith_overflow_check_p): ... this.  Handle also multiplication
        with overflow check.
        (match_uaddsub_overflow): Renamed to ...
        (match_arith_overflow): ... this.  Add cfg_changed argument.  Handle
        also multiplication with overflow check.  Adjust function comment.
        (math_opts_dom_walker::after_dom_children): Adjust callers.  Call
        match_arith_overflow also for MULT_EXPR.

2021-01-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/arm_neon.h (vmovl_s8): Reimplement using
        __builtin_convertvector.
        (vmovl_s16): Likewise.
        (vmovl_s32): Likewise.
        (vmovl_u8): Likewise.
        (vmovl_u16): Likewise.
        (vmovl_u32): Likewise.
        (vmovn_s16): Likewise.
        (vmovn_s32): Likewise.
        (vmovn_s64): Likewise.
        (vmovn_u16): Likewise.
        (vmovn_u32): Likewise.
        (vmovn_u64): Likewise.

2021-01-11  Martin Liska  <mliska@suse.cz>

        * gimple-if-to-switch.cc (struct condition_info): Use auto_var.
        (if_chain::is_beneficial): Delete clusters
        (find_conditions): Make second argument of conditions_in_bbs a
        pointer so that we control over it's lifetime.
        (pass_if_to_switch::execute): Delete them.

2021-01-11  Kewen Lin  <linkw@linux.ibm.com>

        * ira.c (move_unallocated_pseudos): Check other_reg and skip if
        it isn't set.

2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>

        * config/vax/vax.md (cc): Remove mode attribute.
        (subst_<cc>, subst_f<cc>): Rename to...
        (subst_<mode>, subst_f<VAXccnz:mode>): ... these respectively.
        (*cbranch<VAXint:mode>4_<VAXcc:mode>): Update for `cc' removal.
        (*cbranch<VAXfp:mode>4_<VAXccnz:mode>): Likewise.
        (*branch_<mode>, *branch_<mode>_reversed): Likewise.

2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>

        * config/vax/vax.md (subst_f<cc>): Add mode to operands and
        `const_double_zero'.

2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>

        * config/pdp11/pdp11.md (PDPfp): New mode iterator.
        (fcc_cc, fcc_ccnz): Use it.  Add mode to `const_double_zero' and
        operands.

2021-01-09  Maciej W. Rozycki  <macro@linux-mips.org>

        * genemit.c (gen_exp) <CONST_DOUBLE>: Handle `const_double_zero'
        rtx.
        * read-rtl.c (rtx_reader::read_rtx_code): Handle machine mode
        with `const_double_zero'.
        * doc/rtl.texi (Constant Expression Types): Document it.

2021-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR c++/98556
        * tree-cfg.c (verify_gimple_assign_binary): Allow lhs of
        POINTER_DIFF_EXPR to be any integral type.

2021-01-09  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/98603
        * function.c (instantiate_virtual_regs_in_insn): For asm goto
        with impossible constraints, drop all SETs, CLOBBERs, drop PARALLEL
        if any, set ASM_OPERANDS mode to VOIDmode and change
        ASM_OPERANDS_OUTPUT_CONSTRAINT and ASM_OPERANDS_OUTPUT_IDX.

2021-01-09  Alexandre Oliva  <oliva@gnu.org>

        PR debug/97714
        * final.c (notice_source_line): Narrow down the condition to
        skip a line-0 marker.

2021-01-08  Sergei Trofimovich  <siarheit@google.com>

        * ipa-modref.c (merge_call_side_effects): Fix
        linebreak split by reordering two print calls.

2021-01-08  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/vector.md (*tf_to_fprx2_0): Rename from
        "*mov_tf_to_fprx2_0" for consistency, fix constraint.
        (*tf_to_fprx2_1): Rename from "*mov_tf_to_fprx2_1" for
        consistency, fix constraint.

2021-01-08  Ilya Leoshkevich  <iii@linux.ibm.com>

        * config/s390/s390-c.c (s390_def_or_undef_macro): Accept
        callables instead of mask values.
        (struct target_flag_set_p): New predicate.
        (s390_cpu_cpp_builtins_internal): Define or undefine
        __LONG_DOUBLE_VX__ macro.

2021-01-08  H.J. Lu  <hjl.tools@gmail.com>

        PR target/98482
        * config/i386/i386.c (x86_function_profiler): Use R10 and R11
        to call mcount in large model with PIC for NO_PROFILE_COUNTERS
        targets.

2021-01-08  Richard Biener  <rguenther@suse.de>

        * tree-ssa-sccvn.c (pass_fre::execute): Reset the SCEV hash table.

2021-01-08  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (scalar_stmts_to_slp_tree_map_t): Fix.
        (vect_build_slp_tree): On cache hit release the matched
        scalar stmts vector.
        * tree-vect-stmts.c (vectorizable_store): Properly free
        vec_oprnds before possibly gathering them again.

2021-01-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98544
        * tree-vect-slp.c (vect_optimize_slp): Always materialize
        permutes at a permute node.

2021-01-08  H.J. Lu  <hjl.tools@gmail.com>

        PR target/98482
        * config/i386/i386.c (x86_function_profiler): Use R10 to call
        mcount in large model.  Sorry for large model with PIC.

2021-01-08  Jakub Jelinek  <jakub@redhat.com>

        PR target/98585
        * config/i386/i386.opt (ix86_cmodel, ix86_incoming_stack_boundary_arg,
        ix86_pmode, ix86_preferred_stack_boundary_arg, ix86_regparm,
        ix86_veclibabi_type): Remove x_ prefix, use TargetVariable instead of
        TargetSave and initialize for variables with enum types.
        (mfentry, mstack-protector-guard-reg=, mstack-protector-guard-offset=,
        mstack-protector-guard-symbol=): Add Save.
        * config/i386/i386-options.c (ix86_function_specific_save,
        ix86_function_specific_restore): Don't save or restore x_ix86_cmodel,
        x_ix86_incoming_stack_boundary_arg, x_ix86_pmode,
        x_ix86_preferred_stack_boundary_arg, x_ix86_regparm,
        x_ix86_veclibabi_type.

2021-01-08  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (*cnot<mode>): Extend from
        SVE_FULL_I to SVE_I.
        (*cond_cnot<mode>_2, *cond_cnot<mode>_any): Likewise.

2021-01-08  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (*cond_uxt<mode>_2): Extend from
        SVE_FULL_I to SVE_I.
        (*cond_uxt<mode>_any): Likewise.

2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/iterators.md (Vwhalf): New iterator.
        * config/aarch64/aarch64-simd.md (aarch64_<sur>adalp<mode>_3):
        Rename to...
        (aarch64_<sur>adalp<mode>): ... This.  Make more
        builtin-friendly.
        (<sur>sadv16qi): Adjust callsite of the above.
        * config/aarch64/aarch64-simd-builtins.def (sadalp, uadalp): New
        builtins.
        * config/aarch64/arm_neon.h (vpadal_s8): Reimplement using
        builtins.
        (vpadal_s16): Likewise.
        (vpadal_u8): Likewise.
        (vpadal_u16): Likewise.
        (vpadalq_s8): Likewise.
        (vpadalq_s16): Likewise.
        (vpadalq_s32): Likewise.
        (vpadalq_u8): Likewise.
        (vpadalq_u16): Likewise.
        (vpadalq_u32): Likewise.

2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aarch64_<su>abd<mode>_3):
        Rename to...
        (aarch64_<su>abd<mode>): ... This.
        (<sur>sadv16qi): Adjust callsite of the above.
        * config/aarch64/aarch64-simd-builtins.def (sabd, uabd): Define
        builtins.
        * config/aarch64/arm_neon.h (vabd_s8): Reimplement using
        builtin.
        (vabd_s16): Likewise.
        (vabd_s32): Likewise.
        (vabd_u8): Likewise.
        (vabd_u16): Likewise.
        (vabd_u32): Likewise.
        (vabdq_s8): Likewise.
        (vabdq_s16): Likewise.
        (vabdq_s32): Likewise.
        (vabdq_u8): Likewise.
        (vabdq_u16): Likewise.
        (vabdq_u32): Likewise.

2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd-builtins.def (saba, uaba): Define
        builtins.
        * config/aarch64/arm_neon.h (vaba_s8): Implement using builtin.
        (vaba_s16): Likewise.
        (vaba_s32): Likewise.
        (vaba_u8): Likewise.
        (vaba_u16): Likewise.
        (vaba_u32): Likewise.
        (vabaq_s8): Likewise.
        (vabaq_s16): Likewise.
        (vabaq_s32): Likewise.
        (vabaq_u8): Likewise.
        (vabaq_u16): Likewise.
        (vabaq_u32): Likewise.

2021-01-08  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

        * config/aarch64/aarch64-simd.md (aba<mode>_3): Rename to...
        (aarch64_<su>aba<mode>): ... This.  Handle uaba as well.
        Change RTL pattern to match.

2021-01-08  Kito Cheng  <kito.cheng@sifive.com>

        * common/config/riscv/riscv-common.c (riscv_current_subset_list): New.
        * config/riscv/riscv-c.c (riscv-subset.h): New.
        (INCLUDE_STRING): Define.
        (riscv_cpu_cpp_builtins): Add new style architecture extension
        test macros.
        * config/riscv/riscv-subset.h (riscv_subset_list::begin): New.
        (riscv_subset_list::end): New.
        (riscv_current_subset_list): New.

2021-01-08  Kito Cheng  <kito.cheng@sifive.com>

        * common/config/riscv/riscv-common.c (RISCV_DONT_CARE_VERSION):
        Move to riscv-subset.h.
        (struct riscv_subset_t): Ditto.
        (class riscv_subset_list): Ditto.
        * config/riscv/riscv-subset.h (RISCV_DONT_CARE_VERSION): Move
        from riscv-common.c.
        (struct riscv_subset_t): Ditto.
        (class riscv_subset_list): Ditto.
        * config/riscv/t-riscv ($(common_out_file)): Add file
        dependency.

2021-01-07  Jakub Jelinek  <jakub@redhat.com>

        PR target/98567
        * config/i386/i386.md (*bmi_blsi_<mode>_cmp, *bmi_blsi_<mode>_ccno):
        New define_insn patterns.

2021-01-07  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64-sve.md (@cond_<SVE_INT_UNARY:optab><mode>)
        (*cond_<SVE_INT_UNARY:optab><mode>_2): Extend from SVE_FULL_I to SVE_I.
        (*cond_<SVE_INT_UNARY:optab><mode>_any): Likewise.

2021-01-07  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/98560
        * internal-fn.def (IFN_VCONDU, IFN_VCONDEQ): Use type vec_cond.
        * internal-fn.c (vec_cond_mask_direct): Get the data mode from
        argument 1.
        (vec_cond_direct): Likewise argument 2.
        (vec_condu_direct, vec_condeq_direct): Delete.
        (expand_vect_cond_optab_fn): Rename to...
        (expand_vec_cond_optab_fn): ...this, replacing old macro.
        (expand_vec_condu_optab_fn, expand_vec_condeq_optab_fn): Delete.
        (expand_vect_cond_mask_optab_fn): Rename to...
        (expand_vec_cond_mask_optab_fn): ...this, replacing old macro.
        (direct_vec_cond_mask_optab_supported_p): Treat the optab as a
        convert optab.
        (direct_vec_cond_optab_supported_p): Likewise.
        (direct_vec_condu_optab_supported_p): Delete.
        (direct_vec_condeq_optab_supported_p): Delete.
        * gimple-isel.cc: Include internal-fn.h.
        (gimple_expand_vec_cond_expr): Check that IFN_VCONDEQ is supported
        before using it.

2021-01-07  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/98560
        * gimple-isel.cc (gimple_expand_vec_cond_expr): If we fail to use
        IFN_VCOND{,U,EQ}, fall back on IFN_VCOND_MASK.

2021-01-07  Uroš Bizjak  <ubizjak@gmail.com>

        * config/i386/i386.md (insn): Merge from plusminus_insn, shift_insn,
        rotate_insn and optab code attributes.
        Update all uses to merged code attribute.
        * config/i386/sse.md: Update all uses to merged code attribute.
        * config/i386/mmx.md: Update all uses to merged code attribute.

2021-01-07  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98568
        * gimple-ssa-store-merging.c (bswap_view_convert): New function.
        (bswap_replace): Use it.

2021-01-06  Vladimir N. Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/97978
        * lra-int.h (lra_hard_reg_split_p): New external.
        * lra.c (lra_hard_reg_split_p): New global.
        (lra): Set up lra_hard_reg_split_p after splitting a hard reg.
        * lra-assigns.c (lra_assign): Don't check allocation correctness
        after hard reg splitting.

2021-01-06  Martin Sebor  <msebor@redhat.com>

        PR c++/98305
        * builtins.c (new_delete_mismatch_p): New overload.
        (new_delete_mismatch_p (tree, tree)): Call it.

2021-01-06  Alexandre Oliva  <oliva@adacore.com>

        * Makefile.in (T_GLIMITS_H): New.
        (stmp-int-hdrs): Depend on it, use it.
        * config/t-vxworks (T_GLIMITS_H): Override it.
        (vxw-glimits.h): New.

2021-01-06  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98513
        * value-range.cc (intersect_ranges): Compare the upper bounds
        for the expected relation.

2021-01-06  Gerald Pfeifer  <gerald@pfeifer.com>

        Revert:
        2020-12-28  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/standards.texi (HSAIL): Remove section.

2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>

        * configure: Re-generate.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        * doc/invoke.texi (-std=c++20): Adjust for the publication of
        ISO 14882:2020 standard.
        * doc/standards.texi: Likewise.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/94802
        * expr.h (maybe_optimize_sub_cmp_0): Declare.
        * expr.c: Include tree-pretty-print.h and flags.h.
        (maybe_optimize_sub_cmp_0): New function.
        (do_store_flag): Use it.
        * cfgexpand.c (expand_gimple_cond): Likewise.

2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>

        * mux-utils.h (pointer_mux::m_ptr): Tweak description of contents.
        * rtlanal.c (simple_regno_set): Tweak description to clarify the
        RMW condition.

2021-01-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98516
        * tree-vect-slp.c (vect_optimize_slp): Permute the incoming
        lanes when materializing on a VEC_PERM node.
        (vectorizable_slp_permutation): Dump the permute properly.

2021-01-05  Richard Biener  <rguenther@suse.de>

        * tree-vect-slp.c (vect_slp_region): Move debug counter
        to cover individual subgraphs.

2021-01-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98428
        * tree-vect-slp.c (vect_build_slp_tree_1): Properly reject
        vector lane extracts for loop vectorization.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/98514
        * tree-ssa-reassoc.c (bb_rank): Change type from long * to
        int64_t *.
        (operand_rank): Change type from hash_map<tree, long> to
        hash_map<tree, int64_t>.
        (phi_rank): Change return type from long to int64_t.
        (loop_carried_phi): Change block_rank variable type from long to
        int64_t.
        (propagate_rank): Change return type, rank parameter type and
        op_rank variable type from long to int64_t.
        (find_operand_rank): Change return type from long to int64_t
        and change slot variable type from long * to int64_t *.
        (insert_operand_rank): Change rank parameter type from long to
        int64_t.
        (get_rank): Change return type and rank variable type from long to
        int64_t.  Use PRId64 instead of ld to print the rank.
        (init_reassoc): Change rank variable type from long to int64_t
        and adjust correspondingly bb_rank and operand_rank initialization.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96928
        * tree-ssa-phiopt.c (xor_replacement): New function.
        (tree_ssa_phiopt_worker): Call it.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96930
        * match.pd ((A / (1 << B)) -> (A >> B)): If A is extended
        from narrower value which has the same type as 1 << B, perform
        the right shift on the narrower value followed by extension.

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96239
        * gimple-ssa-store-merging.c (maybe_optimize_vector_constructor): New
        function.
        (get_status_for_store_merging): Don't return BB_INVALID for blocks
        with potential bswap optimizable CONSTRUCTORs.
        (pass_store_merging::execute): Optimize vector CONSTRUCTORs with bswap
        if possible.

2021-01-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98381
        * tree.c (vector_element_bits): Properly compute bool vector
        element size.
        * tree-vect-loop.c (vectorizable_live_operation): Properly
        compute the last lane bit offset.

2021-01-05  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98522
        * config/i386/sse.md (sse_cvtps2pi): Redefine as define_insn_and_split.
        Clear the top 64 bytes of the input XMM register.
        (sse_cvttps2pi): Ditto.

2021-01-05  Uroš Bizjak  <ubizjak@gmail.com>

        PR target/98521
        * config/i386/xopintrin.h (_mm256_cmov_si256): New.

2021-01-05  H.J. Lu  <hjl.tools@gmail.com>

        PR target/98495
        * config/i386/xmmintrin.h (_mm_extract_pi16): Cast to unsigned
        short first.

2021-01-05  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.md (maddsidi4_split): Use ACC_REG_FIRST.
        (umaddsidi4_split): Likewise.

2021-01-05  liuhongt  <hongtao.liu@intel.com>

        PR target/98461
        * config/i386/sse.md (*sse2_pmovskb_zexthisi): New
        define_insn_and_split for zero_extend of subreg HI of pmovskb
        result.
        (*sse2_pmovskb_zexthisi): Add new combine splitters for
        zero_extend of not of subreg HI of pmovskb result.

2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/97269
        * explow.c (convert_memory_address_addr_space_1): Handle UNSPECs
        nested in CONSTs.
        * config/aarch64/aarch64.c (aarch64_expand_mov_immediate): Use
        convert_memory_address to convert symbolic immediates to ptr_mode
        before forcing them to memory.

2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/97144
        * recog.c (constrain_operands): Initialize matching_operand
        for each alternative, rather than only doing it once.

2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>

        PR rtl-optimization/98403
        * rtl-ssa/changes.cc (function_info::finalize_new_accesses): Explain
        why we don't remove call clobbers.
        (function_info::apply_changes_to_insn): Don't attempt to add
        call clobbers here.

2021-01-05  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/98371
        * tree-vect-loop.c (vect_reanalyze_as_main_loop): New function.
        (vect_analyze_loop): If an epilogue loop appears to be cheaper
        than the main loop, re-analyze it as a main loop before adopting
        it as a main loop.

2021-01-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR c++/98316
        * configure.ac (NETLIBS): Determine using AX_LIB_SOCKET_NSL.
        * aclocal.m4, configure: Regenerate.
        * Makefile.in (NETLIBS): Define.
        (BACKEND): Remove $(CODYLIB).

2021-01-05  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/98334
        * simplify-rtx.c (simplify_context::simplify_binary_operation_1):
        Optimize (X - 1) * Y + Y to X * Y or (X + 1) * Y - Y to X * Y.

2021-01-05  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * tree-inline.c (expand_call_inline): Restore input_location.
        Return result from recursive call.

2021-01-04  Richard Sandiford  <richard.sandiford@arm.com>

        PR tree-optimization/95401
        * config/aarch64/aarch64-sve-builtins.cc
        (gimple_folder::load_store_cookie): Use bits rather than bytes
        for the alignment argument to IFN_MASK_LOAD and IFN_MASK_STORE.
        * gimple-fold.c (gimple_fold_mask_load_store_mem_ref): Likewise.
        * tree-vect-stmts.c (vectorizable_store): Likewise.
        (vectorizable_load): Likewise.

2021-01-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98308
        * tree-vect-stmts.c (vectorizable_load): Set invariant mask
        SLP vectype.

2021-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/95771
        * tree-ssa-loop-niter.c (number_of_iterations_popcount): Handle types
        with precision smaller than int's precision and types with precision
        twice as large as long long.  Formatting fixes.

2021-01-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98464
        * tree-ssa-sccvn.c (vn_valueize_for_srt): Rename from ...
        (vn_valueize_wrapper): ... this.  Temporarily adjust vn_context_bb.
        (process_bb): Adjust.

2021-01-04  Matthew Malcomson  <matthew.malcomson@arm.com>

        PR other/98437
        * doc/invoke.texi (-fsanitize=address): Fix wording describing
        clash with -fsanitize=hwaddress.

2021-01-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98282
        * tree-ssa-sccvn.c (vn_get_stmt_kind): Classify tcc_reference on
        invariants as VN_NARY.

2021-01-04  Richard Sandiford  <richard.sandiford@arm.com>

        PR target/89057
        * config/aarch64/aarch64-simd.md (aarch64_combine<mode>): Accept
        aarch64_simd_reg_or_zero for operand 2.  Use the combinez patterns
        to handle zero operands.

2021-01-04  Richard Sandiford  <richard.sandiford@arm.com>

        * config/aarch64/aarch64.c (offset_6bit_signed_scaled_p): New function.
        (offset_6bit_unsigned_scaled_p): Fix typo in comment.
        (aarch64_sve_prefetch_operand_p): Accept MUL VLs in the range
        [-32, 31].

2021-01-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98393
        * tree-vect-slp.c (vect_build_slp_tree): Properly zero matches
        when hitting the limit.

2021-01-04  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/98291
        * tree-vect-loop.c (vectorizable_reduction): Bypass
        associativity check for SLP reductions with VF 1.

2021-01-04  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/96782
        * match.pd (x == ~x -> false, x != ~x -> true): New simplifications.

2021-01-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * collect-utils.c (collect_execute): Check dumppfx.
        * collect2.c (maybe_run_lto_and_relink, do_link): Pass atsuffix
        to collect_execute.
        (do_link): Add new parameter atsuffix.
        (main): Handle -dumpdir option.  Skip one argument for
        -o, -isystem and -B options.
        * gcc.c (make_at_file): New helper function.
        (close_at_file): Use it.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.h (MIN_LD64_NO_COAL_SECTS): Adjust.
        Amend handling for LD64_VERSION fallback defaults.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config.gcc: Compute default version information
        from the configured target.  Likewise defaults for
        ld64.
        * config/darwin10.h: Removed.
        * config/darwin12.h: Removed.
        * config/darwin9.h: Removed.
        * config/rs6000/darwin8.h: Removed.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin9.h (ASM_OUTPUT_ALIGNED_COMMON): Delete.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin9.h (STACK_CHECK_STATIC_BUILTIN): Move from here..
        * config/darwin.h (STACK_CHECK_STATIC_BUILTIN): .. to here.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin10.h (LINK_GCC_C_SEQUENCE_SPEC): Move from
        here...
        * config/darwin.h (LINK_GCC_C_SEQUENCE_SPEC): ... to here.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin10.h (LINK_GCC_C_SEQUENCE_SPEC): Move the spec
        for the Darwin10 unwinder stub from here ...
        * config/darwin.h (LINK_COMMAND_SPEC_A): ... to here.

2021-01-02  Iain Sandoe  <iain@sandoe.co.uk>

        * config/darwin.h (DSYMUTIL_SPEC): Default to DWARF
        (ASM_DEBUG_SPEC):Only define if the assembler supports
        stabs.
        (PREFERRED_DEBUGGING_TYPE): Default to DWARF.
        (DARWIN_PREFER_DWARF): Define.
        * config/darwin9.h (PREFERRED_DEBUGGING_TYPE): Remove.
        (DARWIN_PREFER_DWARF): Likewise
        (DSYMUTIL_SPEC): Likewise.
        (COLLECT_RUN_DSYMUTIL): Likewise.
        (ASM_DEBUG_SPEC): Likewise.
        (ASM_DEBUG_OPTION_SPEC): Likewise.

2021-01-02  Jan Hubicka  <jh@suse.cz>

        * cfg.c (free_block): ggc_free bb.

2021-01-01  Jakub Jelinek  <jakub@redhat.com>

        * gcc.c (process_command): Update copyright notice dates.
        * gcov-dump.c (print_version): Ditto.
        * gcov.c (print_version): Ditto.
        * gcov-tool.c (print_version): Ditto.
        * gengtype.c (create_file): Ditto.
        * doc/cpp.texi: Bump @copying's copyright year.
        * doc/cppinternals.texi: Ditto.
        * doc/gcc.texi: Ditto.
        * doc/gccint.texi: Ditto.
        * doc/gcov.texi: Ditto.
        * doc/install.texi: Ditto.
        * doc/invoke.texi: Ditto.

2021-01-01  Jakub Jelinek  <jakub@redhat.com>

        * ChangeLog-2020: Rotate ChangeLog.  New file.

\f
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