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gcc/ChangeLog:
PR c/50584
* attribs.c (decl_attributes): Also pass decl along with type
attributes to handlers.
(init_attr_rdwr_indices): Change second argument to attribute chain.
Handle internal attribute representation in addition to external.
(get_parm_access): New function.
(attr_access::to_internal_string): Define new member function.
(attr_access::to_external_string): Define new member function.
(attr_access::vla_bounds): Define new member function.
* attribs.h (struct attr_access): Declare new members.
(attr_access::from_mode_char): Define new member function.
(get_parm_access): Declare new function.
* calls.c (initialize_argument_information): Pass function type
attributes to init_attr_rdwr_indices.
* doc/invoke.texi (-Warray-parameter, -Wvla-parameter): Document.
* tree-pretty-print.c (dump_generic_node): Correct handling of
qualifiers.
* tree-ssa-uninit.c (maybe_warn_pass_by_reference): Same.
* tree.h (access_mode): Add new enumerator.
gcc/c-family/ChangeLog:
PR c/50584
* c-attribs.c (c_common_attribute_table): Add "arg spec" attribute.
(handle_argspec_attribute): New function.
(get_argument, get_argument_type): New functions.
(append_access_attrs): Add overload. Handle internal attribute
representation in addition to external.
(handle_access_attribute): Handle internal attribute representation
in addition to external.
(build_attr_access_from_parms): New function.
gcc/c-family/ChangeLog:
PR c/50584
* c-common.h (warn_parm_array_mismatch): Declare new function.
(has_attribute): Move declaration of an existing function.
(build_attr_access_from_parms): Declare new function.
* c-warn.c (parm_array_as_string): Define new function.
(plus_one): Define new function.
(warn_parm_ptrarray_mismatch): Define new function.
(warn_parm_array_mismatch): Define new function.
(vla_bound_parm_decl): New function.
* c.opt (-Warray-parameter, -Wvla-parameter): New options.
* c-pretty-print.c (pp_c_type_qualifier_list): Don't print array type
qualifiers here...
(c_pretty_printer::direct_abstract_declarator): ...but instead print
them in brackets here. Also print [static]. Strip extraneous
expressions from VLA bounds.
gcc/c/ChangeLog:
PR c/50584
* c-decl.c (lookup_last_decl): Define new function.
(c_decl_attributes): Call it.
(start_decl): Add argument and use it.
(finish_decl): Call build_attr_access_from_parms and decl_attributes.
(get_parm_array_spec): Define new function.
(push_parm_decl): Call get_parm_array_spec.
(start_function): Call warn_parm_array_mismatch. Build attribute
access and add it to current function.
* c-parser.c (c_parser_declaration_or_fndef): Diagnose mismatches
in forms of array parameters.
* c-tree.h (start_decl): Add argument.
gcc/testsuite/ChangeLog:
PR c/50584
* gcc.dg/attr-access-read-write-2.c: Adjust text of expected message.
* c-c++-common/Warray-bounds-6.c: Correct C++ declaration, adjust
text of expected diagnostics.
* gcc.dg/Wbuiltin-declaration-mismatch-9.c: Prune expected warning.
* gcc.dg/Warray-parameter-2.c: New test.
* gcc.dg/Warray-parameter-3.c: New test.
* gcc.dg/Warray-parameter-4.c: New test.
* gcc.dg/Warray-parameter-5.c: New test.
* gcc.dg/Warray-parameter.c: New test.
* gcc.dg/Wvla-parameter-2.c: New test.
* gcc.dg/Wvla-parameter-3.c: New test.
* gcc.dg/Wvla-parameter.c: New test.
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2020-08-12 Sandra Loosemore <sandra@codesourcery.com>
gcc/c
* c-decl.c (c_break_label, c_cont_label): Delete, and replace
with...
(in_statement): New.
(start_function): Adjust for above change.
(c_push_function_context, c_pop_function_context): Likewise.
* c-lang.h (struct language_function): Likewise.
* c-objc-common.h (LANG_HOOKS_BLOCK_MAY_FALLTHRU): Define.
* c-parser.c (objc_foreach_break_label, objc_foreach_continue_label):
New.
(c_parser_statement_after_labels): Adjust calls to c_finish_bc_stmt.
(c_parser_switch_statement): Adjust break/switch context handling
and calls to renamed functions.
(c_parser_while_statement): Adjust break/switch context handling and
build a WHILE_STMT.
(c_parser_do_statement): Ditto, with DO_STMT respectively.
(c_parser_for_statement): Ditto, with FOR_STMT respectively.
(c_parser_omp_for_loop): Adjust break/switch context handling.
* c-tree.h (c_break_label, c_cont_label): Delete.
(IN_SWITCH_STMT, IN_ITERATION_STMT): Define.
(IN_OMP_BLOCK, IN_OMP_FOR, IN_OBJC_FOREACH): Define.
(in_statement, switch_statement_break_seen_p): Declare.
(c_start_case, c_finish_case): Renamed to...
(c_start_switch, c_finish_switch).
(c_finish_bc_stmt): Adjust arguments.
* c-typeck.c (build_function_call_vec): Don't try to print
statements with %qE format.
(struct c_switch): Rename switch_expr field to switch_stmt.
Add break_stmt_seen_p field.
(c_start_case): Rename to c_start_switch. Build a SWITCH_STMT
instead of a SWITCH_EXPR. Update for changes to struct c_switch.
(do_case): Update for changes to struct c_switch.
(c_finish_case): Rename to c_finish_switch. Update for changes to
struct c_switch and change of representation from SWITCH_EXPR to
SWITCH_STMT.
(c_finish_loop): Delete.
(c_finish_bc_stmt): Update to reflect changes to break/continue
state representation. Build a BREAK_STMT or CONTINUE_STMT instead
of a GOTO_EXPR except for objc foreach loops.
gcc/objc
* objc-act.c (objc_start_method_definition): Update to reflect
changes to break/continue state bookkeeping in C front end.
gcc/testsuite/
* gcc.dg/gomp/block-7.c: Update expected error message wording.
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DECL_ARRAY_PARAMETER_P [PR96867]
The C++ macro performs a PARM_DECL_CHECK, so will ICE if not tested on a PARM_DECL,
C_ARRAY_PARAMETER doesn't, but probably should, otherwise it is testing e.g.
C_DECL_VARIABLE_SIZE on VAR_DECLs.
2020-09-01 Jakub Jelinek <jakub@redhat.com>
PR c++/96867
* c-typeck.c (handle_omp_array_sections_1): Test C_ARRAY_PARAMETER
only on PARM_DECLs.
* semantics.c (handle_omp_array_sections_1): Test
DECL_ARRAY_PARAMETER_P only on PARM_DECLs.
* c-c++-common/gomp/pr96867.c: New test.
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built-in with invalid array argument
gcc/c/ChangeLog:
PR c/96596
* c-decl.c (match_builtin_function_types): Avoid dealing with erroneous
argument type.
gcc/testsuite/ChangeLog:
PR c/96596
* gcc.dg/Wbuiltin-declaration-mismatch-16.c: New test.
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gcc/ada/ChangeLog:
* gcc-interface/trans.c (gigi): Set exact argument of a vector
growth function to true.
(Attribute_to_gnu): Likewise.
gcc/ChangeLog:
* alias.c (init_alias_analysis): Set exact argument of a vector
growth function to true.
* calls.c (internal_arg_pointer_based_exp_scan): Likewise.
* cfgbuild.c (find_many_sub_basic_blocks): Likewise.
* cfgexpand.c (expand_asm_stmt): Likewise.
* cfgrtl.c (rtl_create_basic_block): Likewise.
* combine.c (combine_split_insns): Likewise.
(combine_instructions): Likewise.
* config/aarch64/aarch64-sve-builtins.cc (function_expander::add_output_operand): Likewise.
(function_expander::add_input_operand): Likewise.
(function_expander::add_integer_operand): Likewise.
(function_expander::add_address_operand): Likewise.
(function_expander::add_fixed_operand): Likewise.
* df-core.c (df_worklist_dataflow_doublequeue): Likewise.
* dwarf2cfi.c (update_row_reg_save): Likewise.
* early-remat.c (early_remat::init_block_info): Likewise.
(early_remat::finalize_candidate_indices): Likewise.
* except.c (sjlj_build_landing_pads): Likewise.
* final.c (compute_alignments): Likewise.
(grow_label_align): Likewise.
* function.c (temp_slots_at_level): Likewise.
* fwprop.c (build_single_def_use_links): Likewise.
(update_uses): Likewise.
* gcc.c (insert_wrapper): Likewise.
* genautomata.c (create_state_ainsn_table): Likewise.
(add_vect): Likewise.
(output_dead_lock_vect): Likewise.
* genmatch.c (capture_info::capture_info): Likewise.
(parser::finish_match_operand): Likewise.
* genrecog.c (optimize_subroutine_group): Likewise.
(merge_pattern_info::merge_pattern_info): Likewise.
(merge_into_decision): Likewise.
(print_subroutine_start): Likewise.
(main): Likewise.
* gimple-loop-versioning.cc (loop_versioning::loop_versioning): Likewise.
* gimple.c (gimple_set_bb): Likewise.
* graphite-isl-ast-to-gimple.c (translate_isl_ast_node_user): Likewise.
* haifa-sched.c (sched_extend_luids): Likewise.
(extend_h_i_d): Likewise.
* insn-addr.h (insn_addresses_new): Likewise.
* ipa-cp.c (gather_context_independent_values): Likewise.
(find_more_contexts_for_caller_subset): Likewise.
* ipa-devirt.c (final_warning_record::grow_type_warnings): Likewise.
(ipa_odr_read_section): Likewise.
* ipa-fnsummary.c (evaluate_properties_for_edge): Likewise.
(ipa_fn_summary_t::duplicate): Likewise.
(analyze_function_body): Likewise.
(ipa_merge_fn_summary_after_inlining): Likewise.
(read_ipa_call_summary): Likewise.
* ipa-icf.c (sem_function::bb_dict_test): Likewise.
* ipa-prop.c (ipa_alloc_node_params): Likewise.
(parm_bb_aa_status_for_bb): Likewise.
(ipa_compute_jump_functions_for_edge): Likewise.
(ipa_analyze_node): Likewise.
(update_jump_functions_after_inlining): Likewise.
(ipa_read_edge_info): Likewise.
(read_ipcp_transformation_info): Likewise.
(ipcp_transform_function): Likewise.
* ipa-reference.c (ipa_reference_write_optimization_summary): Likewise.
* ipa-split.c (execute_split_functions): Likewise.
* ira.c (find_moveable_pseudos): Likewise.
* lower-subreg.c (decompose_multiword_subregs): Likewise.
* lto-streamer-in.c (input_eh_regions): Likewise.
(input_cfg): Likewise.
(input_struct_function_base): Likewise.
(input_function): Likewise.
* modulo-sched.c (set_node_sched_params): Likewise.
(extend_node_sched_params): Likewise.
(schedule_reg_moves): Likewise.
* omp-general.c (omp_construct_simd_compare): Likewise.
* passes.c (pass_manager::create_pass_tab): Likewise.
(enable_disable_pass): Likewise.
* predict.c (determine_unlikely_bbs): Likewise.
* profile.c (compute_branch_probabilities): Likewise.
* read-rtl-function.c (function_reader::parse_block): Likewise.
* read-rtl.c (rtx_reader::read_rtx_code): Likewise.
* reg-stack.c (stack_regs_mentioned): Likewise.
* regrename.c (regrename_init): Likewise.
* rtlanal.c (T>::add_single_to_queue): Likewise.
* sched-deps.c (init_deps_data_vector): Likewise.
* sel-sched-ir.c (sel_extend_global_bb_info): Likewise.
(extend_region_bb_info): Likewise.
(extend_insn_data): Likewise.
* symtab.c (symtab_node::create_reference): Likewise.
* tracer.c (tail_duplicate): Likewise.
* trans-mem.c (tm_region_init): Likewise.
(get_bb_regions_instrumented): Likewise.
* tree-cfg.c (init_empty_tree_cfg_for_function): Likewise.
(build_gimple_cfg): Likewise.
(create_bb): Likewise.
(move_block_to_fn): Likewise.
* tree-complex.c (tree_lower_complex): Likewise.
* tree-if-conv.c (predicate_rhs_code): Likewise.
* tree-inline.c (copy_bb): Likewise.
* tree-into-ssa.c (get_ssa_name_ann): Likewise.
(mark_phi_for_rewrite): Likewise.
* tree-object-size.c (compute_builtin_object_size): Likewise.
(init_object_sizes): Likewise.
* tree-predcom.c (initialize_root_vars_store_elim_1): Likewise.
(initialize_root_vars_store_elim_2): Likewise.
(prepare_initializers_chain_store_elim): Likewise.
* tree-ssa-address.c (addr_for_mem_ref): Likewise.
(multiplier_allowed_in_address_p): Likewise.
* tree-ssa-coalesce.c (ssa_conflicts_new): Likewise.
* tree-ssa-forwprop.c (simplify_vector_constructor): Likewise.
* tree-ssa-loop-ivopts.c (addr_offset_valid_p): Likewise.
(get_address_cost_ainc): Likewise.
* tree-ssa-loop-niter.c (discover_iteration_bound_by_body_walk): Likewise.
* tree-ssa-pre.c (add_to_value): Likewise.
(phi_translate_1): Likewise.
(do_pre_regular_insertion): Likewise.
(do_pre_partial_partial_insertion): Likewise.
(init_pre): Likewise.
* tree-ssa-propagate.c (ssa_prop_init): Likewise.
(update_call_from_tree): Likewise.
* tree-ssa-reassoc.c (optimize_range_tests_cmp_bitwise): Likewise.
* tree-ssa-sccvn.c (vn_reference_lookup_3): Likewise.
(vn_reference_lookup_pieces): Likewise.
(eliminate_dom_walker::eliminate_push_avail): Likewise.
* tree-ssa-strlen.c (set_strinfo): Likewise.
(get_stridx_plus_constant): Likewise.
(zero_length_string): Likewise.
(find_equal_ptrs): Likewise.
(printf_strlen_execute): Likewise.
* tree-ssa-threadedge.c (set_ssa_name_value): Likewise.
* tree-ssanames.c (make_ssa_name_fn): Likewise.
* tree-streamer-in.c (streamer_read_tree_bitfields): Likewise.
* tree-vect-loop.c (vect_record_loop_mask): Likewise.
(vect_get_loop_mask): Likewise.
(vect_record_loop_len): Likewise.
(vect_get_loop_len): Likewise.
* tree-vect-patterns.c (vect_recog_mask_conversion_pattern): Likewise.
* tree-vect-slp.c (vect_slp_convert_to_external): Likewise.
(vect_bb_slp_scalar_cost): Likewise.
(vect_bb_vectorization_profitable_p): Likewise.
(vectorizable_slp_permutation): Likewise.
* tree-vect-stmts.c (vectorizable_call): Likewise.
(vectorizable_simd_clone_call): Likewise.
(scan_store_can_perm_p): Likewise.
(vectorizable_store): Likewise.
* expr.c: Likewise.
* vec.c (test_safe_grow_cleared): Likewise.
* vec.h (vec_safe_grow): Likewise.
(vec_safe_grow_cleared): Likewise.
(vl_ptr>::safe_grow): Likewise.
(vl_ptr>::safe_grow_cleared): Likewise.
* config/c6x/c6x.c (insn_set_clock): Likewise.
gcc/c/ChangeLog:
* gimple-parser.c (c_parser_gimple_compound_statement): Set exact argument of a vector
growth function to true.
gcc/cp/ChangeLog:
* class.c (build_vtbl_initializer): Set exact argument of a vector
growth function to true.
* constraint.cc (get_mapped_args): Likewise.
* decl.c (cp_maybe_mangle_decomp): Likewise.
(cp_finish_decomp): Likewise.
* parser.c (cp_parser_omp_for_loop): Likewise.
* pt.c (canonical_type_parameter): Likewise.
* rtti.c (get_pseudo_ti_init): Likewise.
gcc/fortran/ChangeLog:
* trans-openmp.c (gfc_trans_omp_do): Set exact argument of a vector
growth function to true.
gcc/lto/ChangeLog:
* lto-common.c (lto_file_finalize): Set exact argument of a vector
growth function to true.
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gcc/c/ChangeLog:
PR c/96678
* c-typeck.c (handle_omp_array_sections_1): Talk about
array function parameter in the error message.
gcc/cp/ChangeLog:
PR c/96678
* semantics.c (handle_omp_array_sections_1): Talk about
array function parameter in the error message.
gcc/testsuite/ChangeLog:
PR c/96678
* c-c++-common/gomp/map-4.c: New test.
* c-c++-common/gomp/depend-1.c: Update dg-error.
* c-c++-common/gomp/map-1.c: Likewise.
* c-c++-common/gomp/reduction-1.c: Likewise.
* g++.dg/gomp/depend-1.C: Likewise.
* g++.dg/gomp/depend-2.C: Likewise.
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The following testcase shows various problems with -Wunused-but-set*
warnings and _Generic construct. I think it is best to treat the selector
and the ignored expressions as (potentially) read, because when they are
parsed, the vars in there are already marked as TREE_USED.
2020-08-18 Jakub Jelinek <jakub@redhat.com>
PR c/96571
* c-parser.c (c_parser_generic_selection): Change match_found from bool
to int, holding index of the match. Call mark_exp_read on the selector
expression and on expressions other than the selected one.
* gcc.dg/Wunused-var-4.c: New test.
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One of the problems in this PR was that if we had:
vector_type1 array[] = { vector_value1 };
process_init_element would only treat vector_value1 as initialising
a vector_type1 if they had the same TYPE_MAIN_VARIANT. This has
several problems:
(1) It gives confusing error messages if the vector types are
incompatible. (Tested by gcc.dg/pr96377-1.c.)
(2) It means that we reject code that should be valid with
-flax-vector-conversions. (Tested by gcc.dg/pr96377-2.c.)
(3) On arm and aarch64 targets, it means that we reject some
initializers that mix Advanced SIMD and standard GNU vectors.
These vectors have traditionally had different TYPE_MAIN_VARIANTs
because they have different mangling schemes. (Tested by
gcc.dg/pr96377-[3-6].c.)
(4) It means that we reject SVE initializers that should be valid.
(Tested by gcc.target/aarch64/sve/gnu_vectors_[34].c.)
(5) After r11-1741-g:31427b974ed7b7dd54e2 we reject:
arm_neon_type1 array[] = { k ^ arm_neon_value1 };
because applying the binary operator to arm_neon_value1 strips
the "Advanced SIMD type" attributes that were added in that patch.
Stripping the attributes is problematic for other reasons though,
so that still needs to be fixed separately.
g++.target/aarch64/sve/gnu_vectors_[34].C already pass.
gcc/c/
PR c/96377
* c-typeck.c (process_init_element): Split test for whether to
recurse into a record, union or array into...
(initialize_elementwise_p): ...this new function. Don't recurse
into a vector type if the initialization value is also a vector.
gcc/testsuite/
PR c/96377
* gcc.dg/pr96377-1.c: New test.
* gcc.dg/pr96377-2.c: Likewise.
* gcc.dg/pr96377-3.c: Likewise.
* gcc.dg/pr96377-4.c: Likewise.
* gcc.dg/pr96377-5.c: Likewise.
* gcc.dg/pr96377-6.c: Likewise.
* gcc.target/aarch64/pr96377-1.c: Likewise.
* gcc.target/aarch64/sve/acle/general-c/gnu_vectors_3.c: Likewise.
* gcc.target/aarch64/sve/acle/general-c/gnu_vectors_4.c: Likewise.
* g++.target/aarch64/sve/acle/general-c++/gnu_vectors_3.C: Likewise.
* g++.target/aarch64/sve/acle/general-c++/gnu_vectors_4.C: Likewise.
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This makes sure to emit full declaration DIEs including
formal parameters for used external functions. This helps
debugging when debug information of the external entity is
not available and also helps external tools cross-checking
ABI compatibility which was the bug reporters use case.
For cc1 this affects debug information size as follows:
VM SIZE FILE SIZE
++++++++++++++ GROWING ++++++++++++++
[ = ] 0 .debug_info +1.63Mi +1.3%
[ = ] 0 .debug_str +263Ki +3.4%
[ = ] 0 .debug_abbrev +101Ki +4.9%
[ = ] 0 .debug_line +5.71Ki +0.0%
+44% +16 [Unmapped] +48 +1.2%
-------------- SHRINKING --------------
[ = ] 0 .debug_loc -213 -0.0%
-0.0% -48 .text -48 -0.0%
[ = ] 0 .debug_ranges -16 -0.0%
-0.0% -32 TOTAL +1.99Mi +0.6%
and DWARF compression via DWZ can only shave off minor bits
here.
Previously we emitted no DIEs for external functions at all
unless they were referenced via DW_TAG_GNU_call_site which
for some GCC revs caused a regular DIE to appear and since
GCC 4.9 only a stub without formal parameters. This means
at -O0 we did not emit any DIE for external functions
but with optimization we emitted stubs.
2020-07-30 Richard Biener <rguenther@suse.de>
PR debug/96383
* langhooks-def.h (lhd_finalize_early_debug): Declare.
(LANG_HOOKS_FINALIZE_EARLY_DEBUG): Define.
(LANG_HOOKS_INITIALIZER): Amend.
* langhooks.c: Include cgraph.h and debug.h.
(lhd_finalize_early_debug): Default implementation from
former code in finalize_compilation_unit.
* langhooks.h (lang_hooks::finalize_early_debug): Add.
* cgraphunit.c (symbol_table::finalize_compilation_unit):
Call the finalize_early_debug langhook.
gcc/c-family/
* c-common.h (c_common_finalize_early_debug): Declare.
* c-common.c: Include debug.h.
(c_common_finalize_early_debug): finalize_early_debug langhook
implementation generating debug for extern declarations.
gcc/c/
* c-objc-common.h (LANG_HOOKS_FINALIZE_EARLY_DEBUG):
Define to c_common_finalize_early_debug.
gcc/cp/
* cp-objcp-common.h (LANG_HOOKS_FINALIZE_EARLY_DEBUG):
Define to c_common_finalize_early_debug.
gcc/testsuite/
* gcc.dg/debug/dwarf2/pr96383-1.c: New testcase.
* gcc.dg/debug/dwarf2/pr96383-2.c: Likewise.
libstdc++-v3/
* testsuite/20_util/assume_aligned/3.cc: Use -g0.
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gcc/c-family/ChangeLog:
* c-omp.c (c_finish_omp_critical): Check for no name but
nonzero hint provided.
gcc/c/ChangeLog:
* c-parser.c (c_parser_omp_clause_hint): Require nonnegative hint clause.
(c_parser_omp_critical): Permit hint(0) clause without named critical.
(c_parser_omp_construct): Don't assert if error_mark_node is returned.
gcc/cp/ChangeLog:
* parser.c (cp_parser_omp_clause_hint): Require nonnegative hint.
(cp_parser_omp_critical): Permit hint(0) clause without named critical.
* pt.c (tsubst_expr): Re-check the latter for templates.
gcc/fortran/ChangeLog:
* openmp.c (gfc_match_omp_critical): Fix handling hints; permit
hint clause without named critical.
(resolve_omp_clauses): Require nonnegative constant integer
for the hint clause.
(gfc_resolve_omp_directive): Check for no name but
nonzero value for hint clause.
* parse.c (parse_omp_structured_block): Fix same-name check
for critical.
* trans-openmp.c (gfc_trans_omp_critical): Handle hint clause properly.
libgomp/ChangeLog:
* omp_lib.f90.in: Add omp_sync_hint_* and omp_sync_hint_kind.
* omp_lib.h.in: Likewise.
gcc/testsuite/ChangeLog:
* g++.dg/gomp/critical-3.C: Add nameless critical with hint testcase.
* c-c++-common/gomp/critical-hint-1.c: New test.
* c-c++-common/gomp/critical-hint-2.c: New test.
* gfortran.dg/gomp/critical-hint-1.f90: New test.
* gfortran.dg/gomp/critical-hint-2.f90: New test.
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Default for this hook is NOP. For x86, in 32 bit mode, this hook
sets alignment of long long on stack to 32 bits if preferred stack
boundary is 32 bits.
- This patch prevents lowering of alignment from following macros.
LOCAL_ALIGNMENT
STACK_SLOT_ALIGNMENT
LOCAL_DECL_ALIGNMENT
- This patch fixes
gcc.target/i386/pr69454-2.c
gcc.target/i386/stackalign/longlong-1.c
- Regression test on x86-64, no new fail introduced.
Tested on x86-64.
gcc/c/ChangeLog:
PR target/95237
* c-decl.c (finish_decl): Call target hook
lower_local_decl_alignment to lower local decl alignment.
gcc/ChangeLog:
PR target/95237
* config/i386/i386-protos.h (ix86_local_alignment): Add
another function parameter may_lower alignment. Default is
false.
* config/i386/i386.c (ix86_lower_local_decl_alignment): New
function.
(ix86_local_alignment): Amend ix86_local_alignment to accept
another parameter may_lower. If may_lower is true, new align
may be lower than incoming alignment. If may_lower is false,
new align will be greater or equal to incoming alignment.
(TARGET_LOWER_LOCAL_DECL_ALIGNMENT): Define.
* doc/tm.texi: Regenerate.
* doc/tm.texi.in (TARGET_LOWER_LOCAL_DECL_ALIGNMENT): New
hook.
* target.def (lower_local_decl_alignment): New hook.
gcc/cp/ChangeLog:
PR target/95237
* decl.c (cp_finish_decl): Call target hook
lower_local_decl_alignment to lower local decl alignment.
gcc/testsuite/ChangeLog:
PR target/95237
* c-c++-common/pr95237-1.c: New test.
* c-c++-common/pr95237-2.c: New test.
* c-c++-common/pr95237-3.c: New test.
* c-c++-common/pr95237-4.c: New test.
* c-c++-common/pr95237-5.c: New test.
* c-c++-common/pr95237-6.c: New test.
* c-c++-common/pr95237-7.c: New test.
* c-c++-common/pr95237-8.c: New test.
* c-c++-common/pr95237-9.c: New test.
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This is a fix for the pointer (or array) size inadvertently being used
for the bias with attach and detach mapping kinds, for both C and C++.
2020-07-09 Julian Brown <julian@codesourcery.com>
Thomas Schwinge <thomas@codesourcery.com>
gcc/c/
PR middle-end/95270
* c-typeck.c (c_finish_omp_clauses): Set OMP_CLAUSE_SIZE (bias) to zero
for standalone attach/detach clauses.
gcc/cp/
PR middle-end/95270
* semantics.c (finish_omp_clauses): Likewise.
include/
PR middle-end/95270
* gomp-constants.h (gomp_map_kind): Expand comment for attach/detach
mapping kinds.
gcc/testsuite/
PR middle-end/95270
* c-c++-common/goacc/mdc-1.c: Update expected dump output for zero
bias.
libgomp/
PR middle-end/95270
* testsuite/libgomp.oacc-c-c++-common/pr95270-1.c: New test.
* testsuite/libgomp.oacc-c-c++-common/pr95270-2.c: New test.
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This addresses the issue raised about the usage of memory copy functions
to toggle the scalar storage order. Recall that you cannot (the compiler
errors out) take the address of a scalar which is stored in reverse order,
but you can do it for the enclosing aggregate type., which means that you
can also pass it to the memory copy functions. In this case, the optimizer
may rewrite the copy into a scalar copy, which is a no-no.
gcc/c-family/ChangeLog:
* c.opt (Wscalar-storage-order): Add explicit variable.
gcc/c/ChangeLog:
* c-typeck.c (convert_for_assignment): If -Wscalar-storage-order is
set, warn for conversion between pointers that point to incompatible
scalar storage orders.
gcc/ChangeLog:
* gimple-fold.c (gimple_fold_builtin_memory_op): Do not fold if
either type has reverse scalar storage order.
* tree-ssa-sccvn.c (vn_reference_lookup_3): Do not propagate through
a memory copy if either type has reverse scalar storage order.
gcc/testsuite/ChangeLog:
* gcc.dg/sso-11.c: New test.
* gcc.dg/sso/sso.exp: Pass -Wno-scalar-storage-order.
* gcc.dg/sso/memcpy-1.c: New test.
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gcc/c/ChangeLog:
* c-parser.c (c_parser_statement_after_labels): Pass correct
parameters to c_parser_do_statement.
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OpenMP 5.0 adds support for non-rectangular loop collapses, e.g.
triangular and more complex.
This patch deals just with the diagnostics so that they aren't rejected
immediately as before. As the spec generally requires as before that the
iteration variable initializer and bound in the comparison as invariant
vs. the outermost loop, and just add some exceptional forms that can violate
that, we need to avoid folding the expressions until we can detect them and
in order to avoid folding it later on, I chose to use a TREE_VEC in those
expressions to hold the var_outer * expr1 + expr2 triplet, the patch adds
pretty-printing of that, gimplification etc. and just sorry_at during
omp expansion for now.
The next step will be to implement the different cases of that one by one.
2020-06-16 Jakub Jelinek <jakub@redhat.com>
gcc/
* tree.h (OMP_FOR_NON_RECTANGULAR): Define.
* gimplify.c (gimplify_omp_for): Diagnose schedule, ordered
or dist_schedule clause on non-rectangular loops. Handle
gimplification of non-rectangular lb/b expressions. When changing
iteration variable, adjust also non-rectangular lb/b expressions
referencing that.
* omp-general.h (struct omp_for_data_loop): Add m1, m2 and outer
members.
(struct omp_for_data): Add non_rect member.
* omp-general.c (omp_extract_for_data): Handle non-rectangular
loops. Fill in non_rect, m1, m2 and outer.
* omp-low.c (lower_omp_for): Handle non-rectangular lb/b expressions.
* omp-expand.c (expand_omp_for): Emit sorry_at for unsupported
non-rectangular loop cases and assert for cases that can't be
non-rectangular.
* tree-pretty-print.c (dump_mem_ref): Formatting fix.
(dump_omp_loop_non_rect_expr): New function.
(dump_generic_node): Handle non-rectangular OpenMP loops.
* tree-pretty-print.h (dump_omp_loop_non_rect_expr): Declare.
* gimple-pretty-print.c (dump_gimple_omp_for): Handle non-rectangular
OpenMP loops.
gcc/c-family/
* c-common.h (c_omp_check_loop_iv_exprs): Add an int argument.
* c-omp.c (struct c_omp_check_loop_iv_data): Add maybe_nonrect and
idx members.
(c_omp_is_loop_iterator): New function.
(c_omp_check_loop_iv_r): Use it. Add support for silent scanning
if outer loop iterator is present. Perform duplicate checking through
hash_set in the function rather than expecting caller to do that.
Pass NULL instead of d->ppset to walk_tree_1.
(c_omp_check_nonrect_loop_iv): New function.
(c_omp_check_loop_iv): Use it. Fill in new members, allow
non-rectangular loop forms, diagnose multiple associated loops with
the same iterator. Pass NULL instead of &pset to walk_tree_1.
(c_omp_check_loop_iv_exprs): Likewise.
gcc/c/
* c-parser.c (c_parser_expr_no_commas): Save, clear and restore
c_in_omp_for.
(c_parser_omp_for_loop): Set c_in_omp_for around some calls to avoid
premature c_fully_fold. Defer explicit c_fully_fold calls to after
c_finish_omp_for.
* c-tree.h (c_in_omp_for): Declare.
* c-typeck.c (c_in_omp_for): Define.
(build_modify_expr): Avoid c_fully_fold if c_in_omp_for.
(digest_init): Likewise.
(build_binary_op): Likewise.
gcc/cp/
* semantics.c (handle_omp_for_class_iterator): Adjust
c_omp_check_loop_iv_exprs caller.
(finish_omp_for): Likewise. Don't call fold_build_cleanup_point_expr
before calling c_finish_omp_for and c_omp_check_loop_iv, move it
after those calls.
* pt.c (tsubst_omp_for_iterator): Handle non-rectangular loops.
gcc/testsuite/
* c-c++-common/gomp/loop-6.c: New test.
* gcc.dg/gomp/loop-1.c: Don't expect diagnostics on valid
non-rectangular loops.
* gcc.dg/gomp/loop-2.c: New test.
* g++.dg/gomp/loop-1.C: Don't expect diagnostics on valid
non-rectangular loops.
* g++.dg/gomp/loop-2.C: Likewise.
* g++.dg/gomp/loop-5.C: New test.
* g++.dg/gomp/loop-6.C: New test.
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2020-06-16 Jakub Jelinek <jakub@redhat.com>
gcc/c/
* c-parser.c (c_parser_omp_clause_schedule): Reject modifier separated
from kind by comma rather than colon.
gcc/cp/
* parser.c (cp_parser_omp_clause_schedule): Reject modifier separated
from kind by comma rather than colon.
gcc/testsuite/
* c-c++-common/gomp/schedule-modifiers-2.c: New test.
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There are two warnings that might trigger when a builtin function is
used but not declared yet. Both called through implicitly_declare in
c-decl. The first in implicit_decl_warning does warn for builtins,
but does not add a fixit hint for them (only for non-builtins when
a header is suggested through lookup_name_fuzzy). This warning is
guarded by -Wimplicit-function-declaration. The second warning, which
does include a fixit hint if possible, is given when the implicit
builtin declaration has an incompatible signature. This second warning
cannot be disabled.
This setup means that you only get a fixit-hint for usage of builtin
functions where the implicit signature is different than the actual
signature of the builtin. No fixit hints with header suggestions
are ever generated for builtins like abs, isdigit or putchar.
It seems more consistent to always generate a fixit-hint if possible
for the -Wimplicit-function-declaration warning. And for the second
warning to make it depend on -Wbuiltin-declaration-mismatch like
other warnings about builtin declaration mismatches.
Include a new test to show we get fixit-hints for abs, isdigit and
putchar now. Some small tweaks to existing tests to show the
effect of -Wno-builtin-declaration-mismatch with this change. And
a testcase to show that #pragma GCC diagnostic ignored now works.
gcc/c/ChangeLog:
* c-decl.c (implicit_decl_warning): When warned and olddecl is
an undeclared builtin, then add a fixit header hint, if found.
(implicitly_declare): Add OPT_Wbuiltin_declaration_mismatch to
warning_at about implicit builtin declaration type mismatch.
gcc/testsuite/ChangeLog:
* gcc.dg/missing-header-fixit-3.c: Add
-Wno-implicit-function-declaration.
* gcc.dg/missing-header-fixit-4.c: Add new expected output.
* gcc.dg/missing-header-fixit-5.c: New testcase.
* gcc.dg/Wbuiltin-declaration-mismatch-ignore.c: Likewise.
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This adds a flag to c_parser so we know when we were trying to
construct a string literal. If there is a parse error and we were
constructing a string literal, and the next token is an unknown
identifier name, and we know there is a standard header that defines
that name as a string literal, then add a missing header hint to
the error messsage.
The list of macro names are also used when providing a hint for
missing identifiers.
gcc/c-family/ChangeLog:
* known-headers.cc (get_string_macro_hint): New function.
(get_stdlib_header_for_name): Use get_string_macro_hint.
(get_c_stdlib_header_for_string_macro_name): New function.
* known-headers.h (get_c_stdlib_header_for_string_macro_name):
New function declaration.
gcc/c/ChangeLog:
* c-parser.c (struct c_parser): Add seen_string_literal
bitfield.
(c_parser_consume_token): Reset seen_string_literal.
(c_parser_error_richloc): Add name_hint if seen_string_literal
and next token is a CPP_NAME and we have a missing header
suggestion for the name.
(c_parser_string_literal): Set seen_string_literal.
gcc/testsuite/ChangeLog:
* gcc.dg/spellcheck-inttypes.c: New test.
* g++.dg/spellcheck-inttypes.C: Likewise.
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The C++ parser already tracks function call parens matching, but the C
parser doesn't. This adds the same functionality to the C parser and adds
a testcase showing the C++ and C parser matching function call parens
in an error message.
gcc/c/ChangeLog:
* c-parser.c (c_parser_postfix_expression_after_primary): Add
scope with matching_parens after CPP_OPEN_PAREN.
gcc/testsuite/ChangeLog:
* c-c++-common/missing-close-func-paren.c: New test.
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gcc/c-family/ChangeLog:
* c-common.h (c_omp_predetermined_mapping): Declare.
* c-omp.c (c_omp_predetermined_mapping): New.
gcc/c/ChangeLog:
* c-objc-common.h (LANG_HOOKS_OMP_PREDETERMINED_MAPPING): Redefine.
gcc/cp/ChangeLog:
* cp-gimplify.c (cxx_omp_predetermined_mapping): New.
* cp-objcp-common.h (LANG_HOOKS_OMP_PREDETERMINED_MAPPING): Redfine.
* cp-tree.h (cxx_omp_predetermined_mapping): Declare.
gcc/fortran/ChangeLog:
* f95-lang.c (LANG_HOOKS_OMP_PREDETERMINED_MAPPING): Redefine.
* trans-openmp.c (gfc_omp_predetermined_mapping): New.
* trans.h (gfc_omp_predetermined_mapping): Declare.
gcc/ChangeLog:
* gimplify.c (omp_notice_variable): Use new hook.
* langhooks-def.h (lhd_omp_predetermined_mapping): Declare.
(LANG_HOOKS_OMP_PREDETERMINED_MAPPING): Define
(LANG_HOOKS_DECLS): Add it.
* langhooks.c (lhd_omp_predetermined_sharing): Remove bogus unused attr.
(lhd_omp_predetermined_mapping): New.
* langhooks.h (struct lang_hooks_for_decls): Add new hook.
gcc/testsuite/ChangeLog
2020-06-03 Thomas Schwinge <thomas@codesourcery.com>
Tobias Burnus <tobias@codesourcery.com>
PR middle-end/94874
* c-c++-common/gomp/pr94874.c: New.
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2020-05-28 Nicolas Bértolo <nicolasbertolo@gmail.com>
/ChangeLog:
* configure.ac: Don't require --enable-host-shared when building
for Mingw.
* configure: Regenerate.
2020-05-28 Nicolas Bértolo <nicolasbertolo@gmail.com>
gcc/ChangeLog:
* Makefile.in: don't look for libiberty in the "pic" subdirectory
when building for Mingw. Add dependency on xgcc with the proper
extension.
2020-05-28 Nicolas Bértolo <nicolasbertolo@gmail.com>
gcc/c/ChangeLog:
* Make-lang.in: Remove extra slash.
2020-05-28 Nicolas Bértolo <nicolasbertolo@gmail.com>
gcc/jit/ChangeLog:
* Make-lang.in: Remove extra slash. Build libgccjit.dll and its
import library in Windows.
* config-lang.in: Update comment about --enable-host-shared.
* jit-w32.h: New file.
* jit-w32.c: New file.
(print_last_error): New function that prints the error
string corresponding to GetLastError().
(get_TOKEN_USER_current_user): Helper function used for getting
the SID belonging to the current user.
(create_directory_for_current_user): Helper function to create
a directory with permissions such that only the current user can
access it.
(win_mkdtemp): Create a temporary directory using Windows APIs.
* jit-playback.c: Do not chmod files in Windows. Use LoadLibrary,
FreeLibrary and GetProcAddress instead of libdl.
* jit-result.h, jit-result.c: Introduce result::handle_t to
abstract over the types used for dynamic library handles.
* jit-tempdir.c: Do not use mkdtemp() in Windows, use
win_mkdtemp().
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This fixes an integer overflow warning that ultimatively happens because
of TREE_OVERFLOW propagating through transforms and the existing guard
against this,
375 if (TREE_OVERFLOW_P (ret)
376 && !TREE_OVERFLOW_P (op0)
377 && !TREE_OVERFLOW_P (op1))
378 overflow_warning (EXPR_LOC_OR_LOC (expr, input_location,
being insufficient. Rather than trying to use sth like walk_tree to
exhaustively walk operands (with the possibility of introducing
quadraticness when folding larger expressions recursively) the
following amends the above with an ad-hoc test for a binary op0
with a possibly constant op1.
2020-05-30 Richard Biener <rguenther@suse.de>
PR c/95141
gcc/c
* c-fold.c (c_fully_fold_internal): Enhance guard on
overflow_warning.
gcc/testsuite
* gcc.dg/pr95141.c: New testcase.
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gcc/c/ChangeLog:
* c-parser.c: Fix typo.
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target regions
OpenMP 5.0 also specifies that functions referenced from target regions
(except for target regions with device(ancestor:)) are also implicitly declare target to.
This patch implements that.
2020-05-14 Jakub Jelinek <jakub@redhat.com>
* function.h (struct function): Add has_omp_target bit.
* omp-offload.c (omp_discover_declare_target_fn_r): New function,
old renamed to ...
(omp_discover_declare_target_tgt_fn_r): ... this.
(omp_discover_declare_target_var_r): Call
omp_discover_declare_target_tgt_fn_r instead of
omp_discover_declare_target_fn_r.
(omp_discover_implicit_declare_target): Also queue functions with
has_omp_target bit set, for those walk with
omp_discover_declare_target_fn_r, for declare target to functions
walk with omp_discover_declare_target_tgt_fn_r.
gcc/c/
* c-parser.c (c_parser_omp_target): Set cfun->has_omp_target.
gcc/cp/
* cp-gimplify.c (cp_genericize_r): Set cfun->has_omp_target.
gcc/fortran/
* trans-openmp.c: Include function.h.
(gfc_trans_omp_target): Set cfun->has_omp_target.
libgomp/
* testsuite/libgomp.c-c++-common/target-40.c: New test.
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This extends DECL_GIMPLE_REG_P to all types so we can clear
TREE_ADDRESSABLE even for integers with partial defs, not just
complex and vector variables. To make that transition easier
the patch inverts DECL_GIMPLE_REG_P to DECL_NOT_GIMPLE_REG_P
since that makes the default the current state for all other
types besides complex and vectors.
For the testcase in PR94703 we're able to expand the partial
def'ed local integer to a register then, producing a single
movl rather than going through the stack.
On i?86 this execute FAILs gcc.dg/torture/pr71522.c because
we now expand a round-trip through a long double automatic var
to a register fld/fst which normalizes the value. For that
during RTL expansion we're looking for problematic punnings
of decls and avoid pseudos for those - I chose integer or
BLKmode accesses on decls with modes where precision doesn't
match bitsize which covers the XFmode case.
2020-05-07 Richard Biener <rguenther@suse.de>
PR middle-end/94703
* tree-core.h (tree_decl_common::gimple_reg_flag): Rename ...
(tree_decl_common::not_gimple_reg_flag): ... to this.
* tree.h (DECL_GIMPLE_REG_P): Rename ...
(DECL_NOT_GIMPLE_REG_P): ... to this.
* gimple-expr.c (copy_var_decl): Copy DECL_NOT_GIMPLE_REG_P.
(create_tmp_reg): Simplify.
(create_tmp_reg_fn): Likewise.
(is_gimple_reg): Check DECL_NOT_GIMPLE_REG_P for all regs.
* gimplify.c (create_tmp_from_val): Simplify.
(gimplify_bind_expr): Likewise.
(gimplify_compound_literal_expr): Likewise.
(gimplify_function_tree): Likewise.
(prepare_gimple_addressable): Set DECL_NOT_GIMPLE_REG_P.
* asan.c (create_odr_indicator): Do not clear DECL_GIMPLE_REG_P.
(asan_add_global): Copy it.
* cgraphunit.c (cgraph_node::expand_thunk): Force args
to be GIMPLE regs.
* function.c (gimplify_parameters): Copy
DECL_NOT_GIMPLE_REG_P.
* ipa-param-manipulation.c
(ipa_param_body_adjustments::common_initialization): Simplify.
(ipa_param_body_adjustments::reset_debug_stmts): Copy
DECL_NOT_GIMPLE_REG_P.
* omp-low.c (lower_omp_for_scan): Do not set DECL_GIMPLE_REG_P.
* sanopt.c (sanitize_rewrite_addressable_params): Likewise.
* tree-cfg.c (make_blocks_1): Simplify.
(verify_address): Do not verify DECL_GIMPLE_REG_P setting.
* tree-eh.c (lower_eh_constructs_2): Simplify.
* tree-inline.c (declare_return_variable): Adjust and
generalize.
(copy_decl_to_var): Copy DECL_NOT_GIMPLE_REG_P.
(copy_result_decl_to_var): Likewise.
* tree-into-ssa.c (pass_build_ssa::execute): Adjust comment.
* tree-nested.c (create_tmp_var_for): Simplify.
* tree-parloops.c (separate_decls_in_region_name): Copy
DECL_NOT_GIMPLE_REG_P.
* tree-sra.c (create_access_replacement): Adjust and
generalize partial def support.
* tree-ssa-forwprop.c (pass_forwprop::execute): Set
DECL_NOT_GIMPLE_REG_P on decls we introduce partial defs on.
* tree-ssa.c (maybe_optimize_var): Handle clearing of
TREE_ADDRESSABLE and setting/clearing DECL_NOT_GIMPLE_REG_P
independently.
* lto-streamer-out.c (hash_tree): Hash DECL_NOT_GIMPLE_REG_P.
* tree-streamer-out.c (pack_ts_decl_common_value_fields): Stream
DECL_NOT_GIMPLE_REG_P.
* tree-streamer-in.c (unpack_ts_decl_common_value_fields): Likewise.
* cfgexpand.c (avoid_type_punning_on_regs): New.
(discover_nonconstant_array_refs): Call
avoid_type_punning_on_regs to avoid unsupported mode punning.
lto/
* lto-common.c (compare_tree_sccs_1): Compare
DECL_NOT_GIMPLE_REG_P.
c/
* gimple-parser.c (c_parser_parse_ssa_name): Do not set
DECL_GIMPLE_REG_P.
cp/
* optimize.c (update_cloned_parm): Copy DECL_NOT_GIMPLE_REG_P.
* gcc.dg/tree-ssa/pr94703.c: New testcase.
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If there are _Atomic side-effects in the parameter declarations
of non-nested function, when they are parsed, current_function_decl is
NULL, the create_artificial_label created labels during build_atomic* are
then adjusted by store_parm_decls through set_labels_context_r callback.
Unfortunately, if such thing happens in nested function parameter
declarations, while those decls are parsed current_function_decl is the
parent function (and am not sure it is a good idea to temporarily clear it,
some code perhaps should be aware it is in a nested function, or it can
refer to variables from the parent function etc.) and that means
store_param_decls through set_labels_context_r doesn't adjust anything.
As those labels are emitted in the nested function body rather than in the
parent, I think it is ok to override the context in those cases.
2020-04-30 Jakub Jelinek <jakub@redhat.com>
PR c/94842
* c-decl.c (set_labels_context_r): In addition to context-less
LABEL_DECLs adjust also LABEL_DECLs with context equal to
parent function if any.
(store_parm_decls): Adjust comment.
* gcc.dg/pr94842.c: New test.
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Similarly to inline asm, :: (or any other number of consecutive colons) can
appear in ObjC @selector argument and with the introduction of CPP_SCOPE
into the C FE, we need to trat CPP_SCOPE as two CPP_COLON tokens.
The C++ FE does that already that way.
2020-04-19 Jakub Jelinek <jakub@redhat.com>
PR objc/94637
* c-parser.c (c_parser_objc_selector_arg): Handle CPP_SCOPE like
two CPP_COLON tokens.
* objc.dg/pr94637.m: New test.
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This change fixes two obvious redundant assignments reported by cppcheck:
trunk.git/gcc/c/c-parser.c:16969:2: style: Variable 'data.clauses' is reassigned a value before the old one has been used. [redundantAssignment]
trunk.git/gcc/cp/call.c:5116:9: style: Variable 'arg2' is reassigned a value before the old one has been used. [redundantAssignment]
2020-04-17 Jakub Jelinek <jakub@redhat.com>
PR other/94629
* c-parser.c (c_parser_oacc_routine): Remove redundant assignment
to data.clauses.
* call.c (build_conditional_expr_1): Remove redundant assignment to
arg2.
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This change started with a bugreport about a typo in one requires testcase
(diagnosed with -Wunknown-pragmas only), but following discussion lead to
noting that we do not diagnose restriction that requires directives in
C/C++ may only appear at file or namespace scope; and several our tests
violated that.
2020-04-15 Jakub Jelinek <jakub@redhat.com>
PR c/94593
* c-parser.c (c_parser_pragma) <case PRAGMA_OMP_REQUIRES>: Reject
requires directive when not at file scope.
* parser.c (cp_parser_pragma) <case PRAGMA_OMP_REQUIRES>: Reject
requires directive when not at file or namespace scope.
* c-c++-common/gomp/requires-1.c: Fix a typo, requries -> requires.
Move directives to file scope.
(i): Remove.
* c-c++-common/gomp/requires-2.c: Move directives to file scope.
(i, foo): Remove.
* c-c++-common/gomp/requires-4.c: Move directives to file scope.
* c-c++-common/gomp/atomic-19.c: Move requires directive to file scope.
* c-c++-common/gomp/atomic-20.c: Likewise.
* c-c++-common/gomp/atomic-21.c: Likewise.
* c-c++-common/gomp/atomic-22.c: Likewise.
* gcc.dg/gomp/requires-1.c: New test.
* g++.dg/gomp/requires-1.C: New test.
* g++.dg/gomp/requires-2.C: New test.
* g++.dg/gomp/atomic-18.C: Move requires directive to file scope.
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