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2024-03-09Daily bump.GCC Administrator1-0/+7
2024-03-08c-family, c++: Fix up handling of types which may have padding in ↵Jakub Jelinek1-6/+16
__atomic_{compare_}exchange On Fri, Feb 16, 2024 at 01:51:54PM +0000, Jonathan Wakely wrote: > Ah, although __atomic_compare_exchange only takes pointers, the > compiler replaces that with a call to __atomic_compare_exchange_n > which takes the newval by value, which presumably uses an 80-bit FP > register and so the padding bits become indeterminate again. The problem is that __atomic_{,compare_}exchange lowering if it has a supported atomic 1/2/4/8/16 size emits code like: _3 = *p2; _4 = VIEW_CONVERT_EXPR<I_type> (_3); so if long double or some small struct etc. has some carefully filled padding bits, those bits can be lost on the assignment. The library call for __atomic_{,compare_}exchange would actually work because it woiuld load the value from memory using integral type or memcpy. E.g. on void foo (long double *a, long double *b, long double *c) { __atomic_compare_exchange (a, b, c, false, __ATOMIC_RELAXED, __ATOMIC_RELAXED); } we end up with -O0 with: fldt (%rax) fstpt -48(%rbp) movq -48(%rbp), %rax movq -40(%rbp), %rdx i.e. load *c from memory into 387 register, store it back to uninitialized stack slot (the padding bits are now random in there) and then load a __uint128_t (pair of GPR regs). The problem is that we first load it using whatever type the pointer points to and then VIEW_CONVERT_EXPR that value: p2 = build_indirect_ref (loc, p2, RO_UNARY_STAR); p2 = build1 (VIEW_CONVERT_EXPR, I_type, p2); The following patch fixes that by creating a MEM_REF instead, with the I_type type, but with the original pointer type on the second argument for aliasing purposes, so we actually preserve the padding bits that way. With this patch instead of the above assembly we emit movq 8(%rax), %rdx movq (%rax), %rax I had to add support for MEM_REF in pt.cc, though with the assumption that it has been already originally created with non-dependent types/operands (which is the case here for the __atomic*exchange lowering). 2024-03-08 Jakub Jelinek <jakub@redhat.com> gcc/c-family/ * c-common.cc (resolve_overloaded_atomic_exchange): Instead of setting p1 to VIEW_CONVERT_EXPR<I_type> (*p1), set it to MEM_REF with p1 and (typeof (p1)) 0 operands and I_type type. (resolve_overloaded_atomic_compare_exchange): Similarly for p2. gcc/cp/ * pt.cc (tsubst_expr): Handle MEM_REF. gcc/testsuite/ * g++.dg/ext/atomic-5.C: New test.
2024-03-06Daily bump.GCC Administrator1-0/+8
2024-03-05Regenerate c.opt.urlsMark Wielaard1-0/+3
Fixes: 08edf85f747b ("c++/modules: relax diagnostic about GMF contents") gcc/c-family/ChangeLog: * c.opt.urls: Regenerate.
2024-03-04c++/modules: relax diagnostic about GMF contentsPatrick Palka1-0/+4
Issuing a hard error when the GMF doesn't consist only of preprocessing directives happens to be inconvenient for automated testcase reduction via cvise. This patch relaxes this diagnostic into a pedwarn that can be disabled with -Wno-global-module. gcc/c-family/ChangeLog: * c.opt (Wglobal-module): New warning. gcc/cp/ChangeLog: * parser.cc (cp_parser_translation_unit): Relax GMF contents error into a pedwarn. gcc/ChangeLog: * doc/invoke.texi (-Wno-global-module): Document. gcc/testsuite/ChangeLog: * g++.dg/modules/friend-6_a.C: Pass -Wno-global-module instead of -Wno-pedantic. Remove now unnecessary preprocessing directives from GMF. Reviewed-by: Jason Merrill <jason@redhat.com>
2024-03-05Daily bump.GCC Administrator1-0/+4
2024-03-04Regenerate opt.urlsMark Wielaard1-174/+177
There were several commits that didn't regenerate the opt.urls files. Fixes: 438ef143679e ("rs6000: Neuter option -mpower{8,9}-vector") Fixes: 50c549ef3db6 ("gccrs: enable -Winfinite-recursion warnings by default") Fixes: 25bb8a40abd9 ("Move docs for -Wuse-after-free and -Wuseless-cast") Fixes: 48448055fb70 ("AVR: Support .rodata in Flash for AVR64* and AVR128*") Fixes: 42503cc257fb ("AVR: Document option -mskip-bug") Fixes: 7de5bb642c12 ("i386: [APX] Document inline asm behavior and new switch") Fixes: 49a14ee488b8 ("Add -mevex512 into invoke.texi") Fixes: 4666cbde5e6d ("Sort warning options in c-family/c.opt.") Fixes: cda383616183 ("AVR: target/114100 - Better indirect accesses for reduced Tiny") gcc/c-family/ChangeLog: * c.opt.urls: Regenerate. gcc/ChangeLog: * common.opt.urls: Regenerate. * config/avr/avr.opt.urls: Likewise. * config/i386/i386.opt.urls: Likewise. * config/pru/pru.opt.urls: Likewise. * config/riscv/riscv.opt.urls: Likewise. * config/rs6000/rs6000.opt.urls: Likewise. gcc/rust/ChangeLog: * lang.opt.urls: Regenerate.
2024-02-23Daily bump.GCC Administrator1-0/+6
2024-02-22c: Handle scoped attributes in __has*attribute and scoped attribute parsing ↵Jakub Jelinek1-1/+21
changes in -std=c11 etc. modes [PR114007] We aren't able to parse __has_attribute (vendor::attr) (and __has_c_attribute and __has_cpp_attribute) in strict C < C23 modes. While in -std=gnu* modes or in -std=c23 there is CPP_SCOPE token, in -std=c* (except for -std=c23) there are is just a pair of CPP_COLON tokens. The c-lex.cc hunk adds support for that. That leads to a question if we should return 1 or 0 from __has_attribute (gnu::unused) or not, because while [[gnu::unused]] is parsed fine in -std=gnu*/-std=c23 modes (sure, with pedwarn for < C23), we do not parse it at all in -std=c* (except for -std=c23), we only parse [[__extension__ gnu::unused]] there. While the __extension__ in there helps to avoid the pedwarn, I think it is better to be consistent between GNU and strict C < C23 modes and parse [[gnu::unused]] too; on the other side, I think parsing [[__extension__ gnu : : unused]] is too weird and undesirable. So, the following patch adds a flag during preprocessing at the point where we normally create CPP_SCOPE tokens out of 2 consecutive colons on the first CPP_COLON to mark the consecutive case (as we are tight on the bits, I've reused the PURE_ZERO flag, which is used just by the C++ FE and only ever set (both C and C++) on CPP_NUMBER tokens, this new flag has the same value and is only ever used on CPP_COLON tokens) and instead of checking loose_scope_p argument (i.e. whether it is [[__extension__ ...]] or not), it just parses CPP_SCOPE or CPP_COLON with CLONE_SCOPE flag followed by another CPP_COLON the same. The latter will never appear in >= C23 or -std=gnu* modes, though guarding its use say with flag_iso && !flag_isoc23 && doesn't really work because the __extension__ case temporarily clears flag_iso flag. This makes the -std=c11 etc. behavior more similar to -std=gnu11 or -std=c23, the only difference I'm aware of are the #define JOIN2(A, B) A##B [[vendor JOIN2(:,:) attr]] [[__extension__ vendor JOIN2(:,:) attr]] cases, which are accepted in the latter modes, but results in error in -std=c11; but the error is during preprocessing that :: doesn't form a valid preprocessing token, which is true, so just don't do that if you try to have __STRICT_ANSI__ && __STDC_VERSION__ <= 201710L compatibility. 2024-02-22 Jakub Jelinek <jakub@redhat.com> PR c/114007 gcc/ * doc/extend.texi: (__extension__): Remove comments about scope tokens vs. two colons. gcc/c-family/ * c-lex.cc (c_common_has_attribute): Parse 2 CPP_COLONs with the first one with COLON_SCOPE flag the same as CPP_SCOPE. gcc/c/ * c-parser.cc (c_parser_std_attribute): Remove loose_scope_p argument. Instead of checking it, parse 2 CPP_COLONs with the first one with COLON_SCOPE flag the same as CPP_SCOPE. (c_parser_std_attribute_list): Remove loose_scope_p argument, don't pass it to c_parser_std_attribute. (c_parser_std_attribute_specifier): Adjust c_parser_std_attribute_list caller. gcc/testsuite/ * gcc.dg/c23-attr-syntax-6.c: Adjust testcase for :: being valid even in -std=c11 even without __extension__ and : : etc. not being valid anymore even with __extension__. * gcc.dg/c23-attr-syntax-7.c: Likewise. * gcc.dg/c23-attr-syntax-8.c: New test. libcpp/ * include/cpplib.h (COLON_SCOPE): Define to PURE_ZERO. * lex.cc (_cpp_lex_direct): When lexing CPP_COLON with another colon after it, if !CPP_OPTION (pfile, scope) set COLON_SCOPE flag on the first CPP_COLON token.
2024-02-11Daily bump.GCC Administrator1-0/+20
2024-02-10c++: DR2237, cdtor and template-id tweaks [PR107126]Marek Polacek2-0/+9
Since my r11-532 changes to implement DR2237, for this test: template<typename T> struct S { S<T>(); }; in C++20 we emit the ugly: q.C:3:8: error: expected unqualified-id before ')' token 3 | S<T>(); which doesn't explain what the problem is. This patch improves that diagnostic, reduces the error to a pedwarn, and adds a -Wc++20-compat diagnostic. We now say: q.C:3:7: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor] 3 | S<T>(); q.C:3:7: note: remove the '< >' This patch also fixes <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97202#c8> where the C++20 diagnostic was missing altogether: The problem was that I checked for CPP_TEMPLATE_ID too early, at a point at which cp_parser_template_id may not have been called yet. So let's check for it at the end of the function, after the tentative parse and rollback. -Wc++20-compat triggered in libitm/; I sent a patch for that. DR 2237 PR c++/107126 PR c++/97202 gcc/c-family/ChangeLog: * c-opts.cc (c_common_post_options): In C++20 or with -Wc++20-compat, turn on -Wtemplate-id-cdtor. * c.opt (Wtemplate-id-cdtor): New. gcc/cp/ChangeLog: * parser.cc (cp_parser_unqualified_id): Downgrade the DR2237 error to a pedwarn. (cp_parser_constructor_declarator_p): Likewise. gcc/ChangeLog: * doc/invoke.texi: Document -Wtemplate-id-cdtor. gcc/testsuite/ChangeLog: * g++.dg/DRs/dr2237.C: Adjust dg-error. * g++.dg/parse/constructor2.C: Likewise. * g++.dg/template/error34.C: Likewise. * g++.old-deja/g++.pt/ctor2.C: Likewise. * g++.dg/DRs/dr2237-2.C: New test. * g++.dg/DRs/dr2237-3.C: New test. * g++.dg/DRs/dr2237-4.C: New test. * g++.dg/DRs/dr2237-5.C: New test. * g++.dg/warn/Wtemplate-id-cdtor-1.C: New test. * g++.dg/warn/Wtemplate-id-cdtor-2.C: New test. * g++.dg/warn/Wtemplate-id-cdtor-3.C: New test. * g++.dg/warn/Wtemplate-id-cdtor-4.C: New test.
2024-02-10Add %[zt][diox] support to pretty-printJakub Jelinek1-5/+7
In the previous patch I haven't touched the gcc diagnostic routines, using HOST_SIZE_T_PRINT* for those is obviously undesirable because we want the strings to be translatable. We already have %w[diox] for HOST_WIDE_INT arguments, this patch adds t and z modifiers for those. 2024-02-10 Jakub Jelinek <jakub@redhat.com> gcc/ * pretty-print.cc (pp_integer_with_precision): Handle precision 3 for size_t and precision 4 for ptrdiff_t. Formatting fix. (pp_format): Document %{t,z}{d,i,u,o,x}. Implement t and z modifiers. Formatting fixes. (test_pp_format): Test t and z modifiers. * gcc.cc (read_specs): Use %td instead of %ld and casts to long. gcc/c-family/ * c-format.cc (gcc_diag_length_specs): Add t and z modifiers. (PP_FORMAT_CHAR_TABLE, gcc_gfc_char_table): Add entries for t and z modifiers. gcc/fortran/ * error.cc (error_print): Handle z and t modifiers on d, i and u. * check.cc (gfc_check_transfer): Use %zd instead of %ld and casts to long. * primary.cc (gfc_convert_to_structure_constructor): Use %td instead of %ld and casts to long.
2024-02-10Use HOST_SIZE_T_PRINT_* and HOST_WIDE_INT_T_PRINT_* some moreJakub Jelinek1-1/+2
I went through suspicios %l in format strings of *printf family functions combined with casts to (long) or (unsigned long) and tried to find out the types of the original expressions that were cast. Quite a few had size_t type, so I've used the new HOST_SIZE_T_PRINT_* macros together with cast to fmt_size_t for those, and then there were quite a few HOST_WIDE_INTs cast to long, used HOST_WIDE_INT_PRINT_* for those without casts. There was one case of a weird unsigned int variable used with %lu and (long) cast too. 2024-02-10 Jakub Jelinek <jakub@redhat.com> gcc/ * ipa-icf.cc (sem_item_optimizer::process_cong_reduction, sem_item_optimizer::dump_cong_classes): Use HOST_SIZE_T_PRINT_UNSIGNED and casts to fmt_size_t instead of "%lu" and casts to unsigned long. * tree.cc (print_debug_expr_statistics): Use HOST_SIZE_T_PRINT_DEC and casts to fmt_size_t instead of "%ld" and casts to long. (print_value_expr_statistics, print_type_hash_statistics): Likewise. * dwarf2out.cc (output_macinfo_op): Use HOST_WIDE_INT_PRINT_UNSIGNED instead of "%lu" and casts to unsigned long. * gcov-dump.cc (dump_gcov_file): Use %u instead of %lu and casts to unsigned long. * tree-ssa-dom.cc (htab_statistics): Use HOST_SIZE_T_PRINT_DEC and casts to fmt_size_t instead of "%ld" and casts to long. * cfgexpand.cc (dump_stack_var_partition): Use HOST_SIZE_T_PRINT_UNSIGNED and casts to fmt_size_t instead of "%lu" and casts to unsigned long. * gengtype.cc (adjust_field_rtx_def): Likewise. * tree-into-ssa.cc (htab_statistics): Use HOST_SIZE_T_PRINT_DEC and casts to fmt_size_t instead of "%ld" and casts to long. * postreload-gcse.cc (dump_hash_table): Likewise. * ggc-page.cc (alloc_page): Use HOST_SIZE_T_PRINT_UNSIGNED and casts to fmt_size_t instead of "%lu" and casts to unsigned long. (ggc_internal_alloc, ggc_free): Likewise. * genpreds.cc (write_lookup_constraint_1): Likewise. (write_insn_constraint_len): Likewise. * tree-dfa.cc (dump_dfa_stats): Use HOST_SIZE_T_PRINT_DEC and casts to fmt_size_t instead of "%ld" and casts to long. * varasm.cc (output_constant_pool_contents): Use HOST_WIDE_INT_PRINT_DEC instead of "%ld" and casts to long. * var-tracking.cc (dump_var): Likewise. gcc/c-family/ * c-ada-spec.cc (dump_template_types): Use HOST_SIZE_T_PRINT_UNSIGNED and casts to fmt_size_t instead of "%lu" and casts to unsigned long. gcc/c/ * c-decl.cc (get_parm_array_spec): Use HOST_WIDE_INT_PRINT_UNSIGNED instead of "%lu" and casts to unsigned long or unsigned long long. gcc/cp/ * tree.cc (debug_binfo): Use HOST_WIDE_INT_PRINT_DEC instead of "%ld" and casts to long. * pt.cc (print_template_statistics): Use HOST_SIZE_T_PRINT_DEC and casts to fmt_size_t instead of "%ld" and casts to long. * class.cc (dump_class_hierarchy_1): Use HOST_WIDE_INT_PRINT_UNSIGNED instead of "%lu" and casts to unsigned long. For TYPE_ALIGN, use %u instead of %lu and drop casts to unsigned long. * parser.cc (cp_lexer_peek_nth_token): Use HOST_SIZE_T_PRINT_DEC and casts to fmt_size_t instead of "%ld" and casts to long. gcc/fortran/ * trans-common.cc (build_common_decl): Use %wu instead of %lu and casts to unsigned long. * resolve.cc (resolve_ordinary_assign): Use %wd instead of %ld and casts to long. * array.cc (gfc_resolve_character_array_constructor): Likewise. * data.cc (create_character_initializer): Likewise. gcc/jit/ * jit-playback.cc (new_bitcast): Use HOST_WIDE_INT_PRINT_DEC instead of "%ld" and casts to long. gcc/lto/ * lto-common.cc (print_lto_report_1): Use HOST_SIZE_T_PRINT_DEC and casts to fmt_size_t instead of "%ld" and casts to long. Use %d instead of %ld and casts to long for searches and collisions.
2024-02-02Daily bump.GCC Administrator1-0/+7
2024-02-01libcpp: Stabilize the location for macros restored after PCH load [PR105608]Lewis Hyatt1-8/+15
libcpp currently lacks the infrastructure to assign correct locations to macros that were defined prior to loading a PCH and then restored afterwards. While I plan to address that fully for GCC 15, this patch improves things by using at least a valid location, even if it's not the best one. Without this change, libcpp uses pfile->directive_line as the location for the restored macros, but this location_t applies to the old line map, not the one that was just restored from the PCH, so the resulting location is unpredictable and depends on what was stored in the line maps before. With this change, all restored macros get assigned locations at the line of the #include that triggered the PCH restore. A future patch will store the actual file name and line number of each definition and then synthesize locations in the new line map pointing to the right place. gcc/c-family/ChangeLog: PR preprocessor/105608 * c-pch.cc (c_common_read_pch): Adjust line map so that libcpp assigns a location to restored macros which is the same location that triggered the PCH include. libcpp/ChangeLog: PR preprocessor/105608 * pch.cc (cpp_read_state): Set a valid location for restored macros.
2024-02-01Daily bump.GCC Administrator1-0/+5
2024-01-31c++: add deprecation notice for -fconcepts-tsMarek Polacek1-0/+5
We plan to remove -fconcepts-ts in GCC 15 and thus remove the flag_concepts_ts code. This note is an admonishing reminder to convert the Concepts TS code to C++20 Concepts. gcc/c-family/ChangeLog: * c-opts.cc (c_common_post_options): Add an inform saying that -fconcepts-ts is deprecated and will be removed in GCC 15. gcc/ChangeLog: * doc/invoke.texi: Mention that -fconcepts-ts was deprecated in GCC 14.
2024-01-28Daily bump.GCC Administrator1-0/+7
2024-01-26c-family: Fix ICE with large column number after restoring a PCH [PR105608]Lewis Hyatt1-3/+2
Users are allowed to define macros prior to restoring a precompiled header file, as long as those macros are not defined (or are defined identically) in the PCH. However, the PCH restoration process destroys all the macro definitions, so libcpp has to record them before restoring the PCH and then redefine them afterward. This process does not currently assign great locations to the macros after redefining them. Some work is needed to also remember the original locations and get the line_maps instance in the right state (since, like all other data structures, the line_maps instance is also reset after restoring a PCH). The new testcase line-map-3.C contains XFAILed examples where the locations are wrong. This patch addresses a more pressing issue, which is that we ICE in some cases since GCC 11, hitting an assert in line-maps.cc. It happens if the first line encountered after the PCH restore requires an LC_RENAME map, such as will happen if the line is sufficiently long. This is much easier to fix, since we just need to call linemap_line_start before asking libcpp to redefine the stored macros, instead of afterward, to avoid the unexpected need for an LC_RENAME before an LC_ENTER has been seen. gcc/c-family/ChangeLog: PR preprocessor/105608 * c-pch.cc (c_common_read_pch): Start a new line map before asking libcpp to restore macros defined prior to reading the PCH, instead of afterward. gcc/testsuite/ChangeLog: PR preprocessor/105608 * g++.dg/pch/line-map-1.C: New test. * g++.dg/pch/line-map-1.Hs: New test. * g++.dg/pch/line-map-2.C: New test. * g++.dg/pch/line-map-2.Hs: New test. * g++.dg/pch/line-map-3.C: New test. * g++.dg/pch/line-map-3.Hs: New test.
2024-01-24Daily bump.GCC Administrator1-0/+10
2024-01-23c: Call c_fully_fold on __atomic_* operands in ↵Jakub Jelinek1-0/+6
atomic_bitint_fetch_using_cas_loop [PR113518] As the following testcase shows, I forgot to call c_fully_fold on the __atomic_*/__sync_* operands called on _BitInt address, the expressions are then used inside of TARGET_EXPR initializers etc. and are never fully folded later, which means we can ICE e.g. on C_MAYBE_CONST_EXPR trees inside of those. The following patch fixes it, while the function currently is only called in the C FE because C++ doesn't support BITINT_TYPE, I think guarding the calls on !c_dialect_cxx () is safer. 2024-01-23 Jakub Jelinek <jakub@redhat.com> PR c/113518 * c-common.cc (atomic_bitint_fetch_using_cas_loop): Call c_fully_fold on lhs_addr, val and model for C. * gcc.dg/bitint-77.c: New test.
2024-01-23Sort warning options in c-family/c.opt.Sandra Loosemore1-244/+244
In spite of the plea "Please try to keep this file in ASCII collating order" at the top of the file, the sorting of the entries for the various -Wfoo options had increased in entropy. This made it hard to correlate them against e.g. the list of options enabled by -Wall in the manual (see PR90463). This patch is at least a step in the right direction to restore order to the file. I confirmed that no lines were added or removed by these changes, and that the output of "gcc -Q --help=warnings" is unchanged both with or without -Wall added to the command. gcc/c-family/ChangeLog * c.opt: Improve sorting of warning options.
2024-01-17Daily bump.GCC Administrator1-0/+6
2024-01-16Fix crash of -fdump-ada-spec in a pathological caseEric Botcazou1-0/+2
gcc/c-family/ PR ada/113397 * c-ada-spec.cc (check_type_name_conflict): Add guard for the presence of DECL_NAME on a TYPE_DECL.
2024-01-12Daily bump.GCC Administrator1-0/+5
2024-01-11OpenMP: lvalue parsing for map/to/from clauses (C)Julian Brown1-0/+12
This patch adds support for parsing general lvalues ("locator list item types") for OpenMP "map", "to" and "from" clauses to the C front-end, similar to the previously-posted patch for C++. Such syntax is permitted for OpenMP 5.0 and above. It was previously posted for mainline here: https://gcc.gnu.org/pipermail/gcc-patches/2022-December/609038.html and for the og13 branch here: https://gcc.gnu.org/pipermail/gcc-patches/2023-June/623355.html 2024-01-11 Julian Brown <julian@codesourcery.com> gcc/c-family/ * c-pretty-print.cc (c_pretty_printer::postfix_expression, c_pretty_printer::expression): Add OMP_ARRAY_SECTION support. gcc/c/ * c-parser.cc (c_parser_braced_init, c_parser_conditional_expression): Don't allow OpenMP array section. (c_parser_postfix_expression): Don't allow array section in statement expression. (c_parser_postfix_expression_after_primary): Add support for OpenMP array section parsing. (c_parser_expr_list): Don't allow OpenMP array section here. (c_parser_omp_variable_list): Change ALLOW_DEREF parameter to MAP_LVALUE. Support parsing of general lvalues in "map", "to" and "from" clauses. (c_parser_omp_var_list_parens): Change ALLOW_DEREF parameter to MAP_LVALUE. Update call to c_parser_omp_variable_list. (c_parser_oacc_data_clause): Update calls to c_parser_omp_var_list_parens. (c_parser_omp_clause_reduction): Use OMP_ARRAY_SECTION tree node instead of TREE_LIST for array sections. (c_parser_omp_target): Allow GOMP_MAP_ATTACH. * c-tree.h (c_omp_array_section_p): Add extern declaration. (build_omp_array_section): Add prototype. * c-typeck.cc (c_omp_array_section_p): Add flag. (mark_exp_read): Support OMP_ARRAY_SECTION. (build_omp_array_section): Add function. (build_external_ref): Tweak error path for OpenMP array sections. (handle_omp_array_sections_1): Use OMP_ARRAY_SECTION tree code instead of TREE_LIST. Handle more kinds of expressions. (c_oacc_check_attachments): Use OMP_ARRAY_SECTION instead of TREE_LIST for array sections. (c_finish_omp_clauses): Use OMP_ARRAY_SECTION instead of TREE_LIST. Check for supported expression types. gcc/testsuite/ * gcc.dg/gomp/bad-array-section-c-1.c: New test. * gcc.dg/gomp/bad-array-section-c-2.c: New test. * gcc.dg/gomp/bad-array-section-c-3.c: New test. * gcc.dg/gomp/bad-array-section-c-4.c: New test. * gcc.dg/gomp/bad-array-section-c-5.c: New test. * gcc.dg/gomp/bad-array-section-c-6.c: New test. * gcc.dg/gomp/bad-array-section-c-7.c: New test. * gcc.dg/gomp/bad-array-section-c-8.c: New test. libgomp/ * libgomp.texi: C/C++ lvalues are supported now for map/to/from. * testsuite/libgomp.c-c++-common/ind-base-4.c: New test. * testsuite/libgomp.c-c++-common/unary-ptr-1.c: New test.
2024-01-10Daily bump.GCC Administrator1-0/+25
2024-01-09c++: P0847R7 (deducing this) - diagnostics. [PR102609]waffl3x1-0/+1
Diagnostics for xobj member functions. Also includes some diagnostics for xobj lambdas which are not implemented here. CWG2554 is also implemented here, we explicitly error when an xobj member function overrides a virtual function. PR c++/102609 gcc/c-family/ChangeLog: PR c++/102609 C++23 P0847R7 (deducing this) - diagnostics. * c-cppbuiltin.cc (c_cpp_builtins): Define __cpp_explicit_this_parameter=202110L feature test macro. gcc/cp/ChangeLog: PR c++/102609 C++23 P0847R7 (deducing this) - diagnostics. * class.cc (resolve_address_of_overloaded_function): Diagnostics. * cp-tree.h (TFF_XOBJ_FUNC): Define. * decl.cc (grokfndecl): Diagnostics. (grokdeclarator): Diagnostics. * error.cc (dump_aggr_type): Pass TFF_XOBJ_FUNC. (dump_lambda_function): Formatting for xobj lambda. (dump_function_decl): Pass TFF_XOBJ_FUNC. (dump_parameters): Formatting for xobj member functions. (function_category): Formatting for xobj member functions. * parser.cc (cp_parser_decl_specifier_seq): Diagnostics. (cp_parser_parameter_declaration): Diagnostics. * search.cc (look_for_overrides_here): Make xobj member functions override. (look_for_overrides_r): Reject an overriding xobj member function and diagnose it. * semantics.cc (finish_this_expr): Diagnostics. * typeck.cc (cp_build_addr_expr_1): Diagnostics. gcc/testsuite/ChangeLog: PR c++/102609 C++23 P0847R7 (deducing this) - diagnostics. * g++.dg/cpp23/feat-cxx2b.C: Test existance and value of __cpp_explicit_this_parameter feature test macro. * g++.dg/cpp26/feat-cxx26.C: Likewise. * g++.dg/cpp23/explicit-obj-cxx-dialect-A.C: New test. * g++.dg/cpp23/explicit-obj-cxx-dialect-B.C: New test. * g++.dg/cpp23/explicit-obj-cxx-dialect-C.C: New test. * g++.dg/cpp23/explicit-obj-cxx-dialect-D.C: New test. * g++.dg/cpp23/explicit-obj-cxx-dialect-E.C: New test. * g++.dg/cpp23/explicit-obj-diagnostics1.C: New test. * g++.dg/cpp23/explicit-obj-diagnostics2.C: New test. * g++.dg/cpp23/explicit-obj-diagnostics3.C: New test. * g++.dg/cpp23/explicit-obj-diagnostics4.C: New test. * g++.dg/cpp23/explicit-obj-diagnostics5.C: New test. * g++.dg/cpp23/explicit-obj-diagnostics6.C: New test. * g++.dg/cpp23/explicit-obj-diagnostics7.C: New test. Signed-off-by: Waffl3x <waffl3x@protonmail.com>
2024-01-09c-family: copy attribute diagnostic fixes [PR113262]Jakub Jelinek1-18/+14
The copy attributes is allowed on decls as well as types and even has checks whether decl (set to *node) is DECL_P or TYPE_P, but for diagnostics unconditionally uses DECL_SOURCE_LOCATION (decl), which obviously only works if it applies to a decl. 2024-01-09 Jakub Jelinek <jakub@redhat.com> PR c/113262 * c-attribs.cc (handle_copy_attribute): Don't use DECL_SOURCE_LOCATION (decl) if decl is not DECL_P, use input_location instead. Formatting fixes. * gcc.dg/pr113262.c: New test.
2024-01-09OpenMP: lvalue parsing for map/to/from clauses (C++)Julian Brown2-4/+23
This patch supports "lvalue" parsing (or "locator list item type" parsing) for several OpenMP clause types for C++, as required for OpenMP 5.0 and above. This version has been rebased -- some things have changed around template handling recently, e.g. removal of build_non_dependent_expr and tsubst_copy. A new potential corner-case issue has shown up regarding implicit mapping of references to pointer to pointers -- an interaction with the post-review fixes/rework for the patch here: https://gcc.gnu.org/pipermail/gcc-patches/2023-November/638602.html Which fixed the (new) tests baseptrs-[6789].C. I've noted that for now in the patch, and adjusted the baseptrs-[46].C tests slightly to accommodate. 2024-01-08 Julian Brown <julian@codesourcery.com> gcc/c-family/ * c-common.h (c_omp_address_inspector): Remove static from get_origin and maybe_unconvert_ref methods. * c-omp.cc (c_omp_split_clauses): Support OMP_ARRAY_SECTION. (c_omp_address_inspector::map_supported_p): Handle OMP_ARRAY_SECTION. (c_omp_address_inspector::get_origin): Avoid dereferencing possibly NULL type when processing template decls. (c_omp_address_inspector::maybe_unconvert_ref): Likewise. gcc/cp/ * constexpr.cc (potential_consant_expression_1): Handle OMP_ARRAY_SECTION. * cp-tree.h (grok_omp_array_section, build_omp_array_section): Add prototypes. * decl2.cc (grok_omp_array_section): New function. * error.cc (dump_expr): Handle OMP_ARRAY_SECTION. * parser.cc (cp_parser_new): Initialize parser->omp_array_section_p. (cp_parser_statement_expr): Disallow array sections. (cp_parser_postfix_open_square_expression): Support OMP_ARRAY_SECTION parsing. (cp_parser_parenthesized_expression_list, cp_parser_lambda_expression, cp_parser_braced_list): Disallow array sections. (cp_parser_omp_var_list_no_open): Remove ALLOW_DEREF parameter, add MAP_LVALUE in its place. Support generalised lvalue parsing for OpenMP map, to and from clauses. Use OMP_ARRAY_SECTION code instead of TREE_LIST to represent OpenMP array sections. (cp_parser_omp_var_list): Remove ALLOW_DEREF parameter, add MAP_LVALUE. Pass to cp_parser_omp_var_list_no_open. (cp_parser_oacc_data_clause): Update call to cp_parser_omp_var_list. (cp_parser_omp_clause_map): Add sk_omp scope around cp_parser_omp_var_list_no_open call. * parser.h (cp_parser): Add omp_array_section_p field. * pt.cc (tsubst, tsubst_copy, tsubst_omp_clause_decl, tsubst_copy_and_build): Add OMP_ARRAY_SECTION support. * semantics.cc (handle_omp_array_sections_1, handle_omp_array_sections, cp_oacc_check_attachments, finish_omp_clauses): Use OMP_ARRAY_SECTION instead of TREE_LIST where appropriate. Handle more types of map expression. * typeck.cc (build_omp_array_section): New function. gcc/ * gimplify.cc (gimplify_expr): Ensure OMP_ARRAY_SECTION has been processed out before gimplification. * tree-pretty-print.cc (dump_generic_node): Support OMP_ARRAY_SECTION. * tree.def (OMP_ARRAY_SECTION): New tree code. gcc/testsuite/ * c-c++-common/gomp/map-6.c: Update expected output. * c-c++-common/gomp/target-enter-data-1.c: Update scan test. * g++.dg/gomp/array-section-1.C: New test. * g++.dg/gomp/array-section-2.C: New test. * g++.dg/gomp/bad-array-section-1.C: New test. * g++.dg/gomp/bad-array-section-2.C: New test. * g++.dg/gomp/bad-array-section-3.C: New test. * g++.dg/gomp/bad-array-section-4.C: New test. * g++.dg/gomp/bad-array-section-5.C: New test. * g++.dg/gomp/bad-array-section-6.C: New test. * g++.dg/gomp/bad-array-section-7.C: New test. * g++.dg/gomp/bad-array-section-8.C: New test. * g++.dg/gomp/bad-array-section-9.C: New test. * g++.dg/gomp/bad-array-section-10.C: New test. * g++.dg/gomp/bad-array-section-11.C: New test. * g++.dg/gomp/has_device_addr-non-lvalue-1.C: New test. * g++.dg/gomp/pr67522.C: Update expected output. * g++.dg/gomp/ind-base-3.C: New test. * g++.dg/gomp/map-assignment-1.C: New test. * g++.dg/gomp/map-inc-1.C: New test. * g++.dg/gomp/map-lvalue-ref-1.C: New test. * g++.dg/gomp/map-ptrmem-1.C: New test. * g++.dg/gomp/map-ptrmem-2.C: New test. * g++.dg/gomp/map-static-cast-lvalue-1.C: New test. * g++.dg/gomp/map-ternary-1.C: New test. * g++.dg/gomp/member-array-2.C: New test. libgomp/ * testsuite/libgomp.c++/baseptrs-4.C: Remove commented-out cases that now work. * testsuite/libgomp.c++/baseptrs-6.C: New test. * testsuite/libgomp.c++/ind-base-1.C: New test. * testsuite/libgomp.c++/ind-base-2.C: New test. * testsuite/libgomp.c++/lvalue-tofrom-1.C: New test. * testsuite/libgomp.c++/lvalue-tofrom-2.C: New test. * testsuite/libgomp.c++/map-comma-1.C: New test. * testsuite/libgomp.c++/map-rvalue-ref-1.C: New test. * testsuite/libgomp.c++/struct-ref-1.C: New test. * testsuite/libgomp.c-c++-common/array-field-1.c: New test. * testsuite/libgomp.c-c++-common/array-of-struct-1.c: New test. * testsuite/libgomp.c-c++-common/array-of-struct-2.c: New test.
2024-01-05Daily bump.GCC Administrator1-0/+4
2024-01-04Add generated .opt.urls filesDavid Malcolm1-0/+1433
Changed in v5: regenerated Changed in v4: regenerated Changed in v3: regenerated Changed in v2: the files now contain some lang-specific URLs. gcc/ada/ChangeLog: * gcc-interface/lang.opt.urls: New file, autogenerated by regenerate-opt-urls.py. gcc/analyzer/ChangeLog: * analyzer.opt.urls: New file, autogenerated by regenerate-opt-urls.py. gcc/c-family/ChangeLog: * c.opt.urls: New file, autogenerated by regenerate-opt-urls.py. gcc/ChangeLog: * common.opt.urls: New file, autogenerated by regenerate-opt-urls.py. * config/aarch64/aarch64.opt.urls: Likewise. * config/alpha/alpha.opt.urls: Likewise. * config/alpha/elf.opt.urls: Likewise. * config/arc/arc-tables.opt.urls: Likewise. * config/arc/arc.opt.urls: Likewise. * config/arm/arm-tables.opt.urls: Likewise. * config/arm/arm.opt.urls: Likewise. * config/arm/vxworks.opt.urls: Likewise. * config/avr/avr.opt.urls: Likewise. * config/bpf/bpf.opt.urls: Likewise. * config/c6x/c6x-tables.opt.urls: Likewise. * config/c6x/c6x.opt.urls: Likewise. * config/cris/cris.opt.urls: Likewise. * config/cris/elf.opt.urls: Likewise. * config/csky/csky.opt.urls: Likewise. * config/csky/csky_tables.opt.urls: Likewise. * config/darwin.opt.urls: Likewise. * config/dragonfly.opt.urls: Likewise. * config/epiphany/epiphany.opt.urls: Likewise. * config/fr30/fr30.opt.urls: Likewise. * config/freebsd.opt.urls: Likewise. * config/frv/frv.opt.urls: Likewise. * config/ft32/ft32.opt.urls: Likewise. * config/fused-madd.opt.urls: Likewise. * config/g.opt.urls: Likewise. * config/gcn/gcn.opt.urls: Likewise. * config/gnu-user.opt.urls: Likewise. * config/h8300/h8300.opt.urls: Likewise. * config/hpux11.opt.urls: Likewise. * config/i386/cygming.opt.urls: Likewise. * config/i386/cygwin.opt.urls: Likewise. * config/i386/djgpp.opt.urls: Likewise. * config/i386/i386.opt.urls: Likewise. * config/i386/mingw-w64.opt.urls: Likewise. * config/i386/mingw.opt.urls: Likewise. * config/i386/nto.opt.urls: Likewise. * config/ia64/ia64.opt.urls: Likewise. * config/ia64/ilp32.opt.urls: Likewise. * config/ia64/vms.opt.urls: Likewise. * config/iq2000/iq2000.opt.urls: Likewise. * config/linux-android.opt.urls: Likewise. * config/linux.opt.urls: Likewise. * config/lm32/lm32.opt.urls: Likewise. * config/loongarch/loongarch.opt.urls: Likewise. * config/lynx.opt.urls: Likewise. * config/m32c/m32c.opt.urls: Likewise. * config/m32r/m32r.opt.urls: Likewise. * config/m68k/ieee.opt.urls: Likewise. * config/m68k/m68k-tables.opt.urls: Likewise. * config/m68k/m68k.opt.urls: Likewise. * config/m68k/uclinux.opt.urls: Likewise. * config/mcore/mcore.opt.urls: Likewise. * config/microblaze/microblaze.opt.urls: Likewise. * config/mips/mips-tables.opt.urls: Likewise. * config/mips/mips.opt.urls: Likewise. * config/mips/sde.opt.urls: Likewise. * config/mmix/mmix.opt.urls: Likewise. * config/mn10300/mn10300.opt.urls: Likewise. * config/moxie/moxie.opt.urls: Likewise. * config/msp430/msp430.opt.urls: Likewise. * config/nds32/nds32-elf.opt.urls: Likewise. * config/nds32/nds32-linux.opt.urls: Likewise. * config/nds32/nds32.opt.urls: Likewise. * config/netbsd-elf.opt.urls: Likewise. * config/netbsd.opt.urls: Likewise. * config/nios2/elf.opt.urls: Likewise. * config/nios2/nios2.opt.urls: Likewise. * config/nvptx/nvptx-gen.opt.urls: Likewise. * config/nvptx/nvptx.opt.urls: Likewise. * config/openbsd.opt.urls: Likewise. * config/or1k/elf.opt.urls: Likewise. * config/or1k/or1k.opt.urls: Likewise. * config/pa/pa-hpux.opt.urls: Likewise. * config/pa/pa-hpux1010.opt.urls: Likewise. * config/pa/pa-hpux1111.opt.urls: Likewise. * config/pa/pa-hpux1131.opt.urls: Likewise. * config/pa/pa.opt.urls: Likewise. * config/pa/pa64-hpux.opt.urls: Likewise. * config/pdp11/pdp11.opt.urls: Likewise. * config/pru/pru.opt.urls: Likewise. * config/riscv/riscv.opt.urls: Likewise. * config/rl78/rl78.opt.urls: Likewise. * config/rpath.opt.urls: Likewise. * config/rs6000/476.opt.urls: Likewise. * config/rs6000/aix64.opt.urls: Likewise. * config/rs6000/darwin.opt.urls: Likewise. * config/rs6000/linux64.opt.urls: Likewise. * config/rs6000/rs6000-tables.opt.urls: Likewise. * config/rs6000/rs6000.opt.urls: Likewise. * config/rs6000/sysv4.opt.urls: Likewise. * config/rtems.opt.urls: Likewise. * config/rx/elf.opt.urls: Likewise. * config/rx/rx.opt.urls: Likewise. * config/s390/s390.opt.urls: Likewise. * config/s390/tpf.opt.urls: Likewise. * config/sh/sh.opt.urls: Likewise. * config/sh/superh.opt.urls: Likewise. * config/sol2.opt.urls: Likewise. * config/sparc/long-double-switch.opt.urls: Likewise. * config/sparc/sparc.opt.urls: Likewise. * config/stormy16/stormy16.opt.urls: Likewise. * config/v850/v850.opt.urls: Likewise. * config/vax/elf.opt.urls: Likewise. * config/vax/vax.opt.urls: Likewise. * config/visium/visium.opt.urls: Likewise. * config/vms/vms.opt.urls: Likewise. * config/vxworks-smp.opt.urls: Likewise. * config/vxworks.opt.urls: Likewise. * config/xtensa/elf.opt.urls: Likewise. * config/xtensa/uclinux.opt.urls: Likewise. * config/xtensa/xtensa.opt.urls: Likewise. gcc/d/ChangeLog: * lang.opt.urls: New file, autogenerated by regenerate-opt-urls.py. gcc/fortran/ChangeLog: * lang.opt.urls: New file, autogenerated by regenerate-opt-urls.py. gcc/go/ChangeLog: * lang.opt.urls: New file, autogenerated by regenerate-opt-urls.py. gcc/lto/ChangeLog: * lang.opt.urls: New file, autogenerated by regenerate-opt-urls.py. gcc/m2/ChangeLog: * lang.opt.urls: New file, autogenerated by regenerate-opt-urls.py. gcc/ChangeLog: * params.opt.urls: New file, autogenerated by regenerate-opt-urls.py. gcc/rust/ChangeLog: * lang.opt.urls: New file, autogenerated by regenerate-opt-urls.py. Signed-off-by: David Malcolm <dmalcolm@redhat.com>
2024-01-03Update copyright years.Jakub Jelinek38-38/+38
2024-01-03Update Copyright year in ChangeLog filesJakub Jelinek1-1/+1
2023 -> 2024
2023-12-22Daily bump.GCC Administrator1-0/+10
2023-12-21c++: Enable -Walloc-size and -Wcalloc-transposed-args warnings for C++Jakub Jelinek1-1/+1
The following patch enables the -Walloc-size and -Wcalloc-transposed-args warnings for C++ as well. Tracking just 6 arguments for SIZEOF_EXPR for the calloc purposes is because I see alloc_size 1,2, 2,3 and 3,4 pairs used in the wild, so we need at least 5 to cover that rather than 3, and don't want to waste too much compile time/memory for that. 2023-12-21 Jakub Jelinek <jakub@redhat.com> gcc/c-family/ * c.opt (Walloc-size): Enable also for C++ and ObjC++. gcc/cp/ * cp-gimplify.cc (cp_genericize_r): If warn_alloc_size, call warn_for_alloc_size for -Walloc-size diagnostics. * semantics.cc (finish_call_expr): If warn_calloc_transposed_args, call warn_for_calloc for -Wcalloc-transposed-args diagnostics. gcc/testsuite/ * g++.dg/warn/Walloc-size-1.C: New test. * g++.dg/warn/Wcalloc-transposed-args-1.C: New test.
2023-12-21ubsan: Add workaround for missing bitint libubsan support for shifts [PR113092]Jakub Jelinek1-0/+26
libubsan still doesn't support bitints, so ubsan contains a workaround and emits value 0 and TK_Unknown kind for those. If shift second operand has the large/huge _BitInt type, this results in internal errors in libubsan though, so the following patch provides a temporary workaround for that - in the rare case where the last operand has _BitInt type wider than __int128 (or long long on 32-bit arches), it will pretend the shift count has that type saturated to its range. IMHO better than crashing in the library. If the value fits into the __int128 (or long long) range, it will be printed correctly (just print that it has __int128/long long type rather than say _BitInt(255)), if it doesn't, user will at least know that it is a very large negative or very large positive value. 2023-12-21 Jakub Jelinek <jakub@redhat.com> PR sanitizer/113092 * c-ubsan.cc (ubsan_instrument_shift): Workaround for missing ubsan _BitInt support for the shift count. * gcc.dg/ubsan/bitint-4.c: New test.
2023-12-21Daily bump.GCC Administrator1-0/+13
2023-12-20c-family: Use -Wdiscarded-qualifiers for ignored qualifiers in __atomic_*Florian Weimer1-2/+2
This matches other compiler diagnostics. No test updates are needed because c-c++-common/pr95378.c does not match a specific -W option. Fixes commit d2384b7b24f8557b66f6958a05ea99ff4307e75c ("c-family: check qualifiers of arguments to __atomic built-ins (PR 95378)"). gcc/c-family/ PR c/113050 * c-common.cc (get_atomic_generic_size): Use OPT_Wdiscarded_qualifiers instead of OPT_Wincompatible_pointer_types.
2023-12-20c: Split -Wcalloc-transposed-args warning from -Walloc-size, -Walloc-size fixesJakub Jelinek3-0/+77
The following patch changes -Walloc-size warning to no longer warn about int *p = calloc (1, sizeof (int));, because as discussed earlier, the size is IMNSHO sufficient in that case, for alloc_size with 2 arguments warns if the product of the 2 arguments is insufficiently small. Also, it warns also for explicit casts of malloc/calloc etc. calls rather than just implicit, so not just int *p = malloc (1); but also int *p = (int *) malloc (1); It also fixes some ICEs where the code didn't verify the alloc_size arguments properly (Walloc-size-5.c testcase ICEs with vanilla trunk). And lastly, it introduces a coding style warning, -Wcalloc-transposed-args to warn for calloc (sizeof (struct S), 1) and similar calls (regardless of what they are cast to, warning whenever first argument is sizeof and the second is not). 2023-12-20 Jakub Jelinek <jakub@redhat.com> gcc/ * doc/invoke.texi (-Walloc-size): Add to the list of warning options, remove unnecessary line-break. (-Wcalloc-transposed-args): Document new warning. gcc/c-family/ * c.opt (Wcalloc-transposed-args): New warning. * c-common.h (warn_for_calloc, warn_for_alloc_size): Declare. * c-warn.cc (warn_for_calloc, warn_for_alloc_size): New functions. gcc/c/ * c-parser.cc (c_parser_postfix_expression_after_primary): Grow sizeof_arg and sizeof_arg_loc arrays to 6 elements. Call warn_for_calloc if warn_calloc_transposed_args for functions with alloc_size type attribute with 2 arguments. (c_parser_expr_list): Use 6 instead of 3. * c-typeck.cc (build_c_cast): Call warn_for_alloc_size for casts of calls to functions with alloc_size type attribute. (convert_for_assignment): Likewise. gcc/testsuite/ * gcc.dg/Walloc-size-4.c: New test. * gcc.dg/Walloc-size-5.c: New test. * gcc.dg/Wcalloc-transposed-args-1.c: New test.
2023-12-17Daily bump.GCC Administrator1-0/+22
2023-12-16Add support for target_version attributeAndrew Carlotti1-4/+36
This patch adds support for the "target_version" attribute to the middle end and the C++ frontend, which will be used to implement function multiversioning in the aarch64 backend. On targets that don't use the "target" attribute for multiversioning, there is no conflict between the "target" and "target_clones" attributes. This patch therefore makes the mutual exclusion in C-family, D and Ada conditonal upon the value of the expanded_clones_attribute target hook. The "target_version" attribute is only added to C++ in this patch, because this is currently the only frontend which supports multiversioning using the "target" attribute. Support for the "target_version" attribute will be extended to C at a later date. Targets that currently use the "target" attribute for function multiversioning (i.e. i386 and rs6000) are not affected by this patch. gcc/ChangeLog: * attribs.cc (decl_attributes): Pass attribute name to target. (is_function_default_version): Update comment to specify incompatibility with target_version attributes. * cgraphclones.cc (cgraph_node::create_version_clone_with_body): Call valid_version_attribute_p for target_version attributes. * defaults.h (TARGET_HAS_FMV_TARGET_ATTRIBUTE): New macro. * target.def (valid_version_attribute_p): New hook. * doc/tm.texi.in: Add new hook. * doc/tm.texi: Regenerate. * multiple_target.cc (create_dispatcher_calls): Remove redundant is_function_default_version check. (expand_target_clones): Use target macro to pick attribute name. * targhooks.cc (default_target_option_valid_version_attribute_p): New. * targhooks.h (default_target_option_valid_version_attribute_p): New. * tree.h (DECL_FUNCTION_VERSIONED): Update comment to include target_version attributes. gcc/c-family/ChangeLog: * c-attribs.cc (attr_target_exclusions): Make target/target_clones exclusion target-dependent. (attr_target_clones_exclusions): Ditto, and add target_version. (attr_target_version_exclusions): New. (c_common_attribute_table): Add target_version. (handle_target_version_attribute): New. (handle_target_attribute): Amend comment. (handle_target_clones_attribute): Ditto. gcc/ada/ChangeLog: * gcc-interface/utils.cc (attr_target_exclusions): Make target/target_clones exclusion target-dependent. (attr_target_clones_exclusions): Ditto. gcc/d/ChangeLog: * d-attribs.cc (attr_target_exclusions): Make target/target_clones exclusion target-dependent. (attr_target_clones_exclusions): Ditto. gcc/cp/ChangeLog: * decl2.cc (check_classfn): Update comment to include target_version attributes.
2023-12-16c-family: Simplify attribute exclusion handlingAndrew Carlotti1-48/+30
This patch changes the handling of mutual exclusions involving the target and target_clones attributes to use the generic attribute exclusion lists. Additionally, the duplicate handling for the always_inline and noinline attribute exclusion is removed. The only change in functionality is the choice of warning message displayed - due to either a change in the wording for mutual exclusion warnings, or a change in the order in which different checks occur. gcc/c-family/ChangeLog: * c-attribs.cc (attr_always_inline_exclusions): New. (attr_target_exclusions): Ditto. (attr_target_clones_exclusions): Ditto. (c_common_attribute_table): Add new exclusion lists. (handle_noinline_attribute): Remove custom exclusion handling. (handle_always_inline_attribute): Ditto. (handle_target_attribute): Ditto. (handle_target_clones_attribute): Ditto. gcc/testsuite/ChangeLog: * g++.target/i386/mvc2.C: * g++.target/i386/mvc3.C:
2023-12-14Daily bump.GCC Administrator1-0/+40
2023-12-13c++: note other candidates when diagnosing deletednessPatrick Palka1-0/+4
With the previous two patches in place, we can now extend our deletedness diagnostic to note the other considered candidates, e.g.: deleted.C: In function 'int main()': deleted.C:10:4: error: use of deleted function 'void f(int)' 10 | f(0); | ~^~~ deleted.C:5:6: note: declared here 5 | void f(int) = delete; | ^ deleted.C:5:6: note: candidate: 'void f(int)' (deleted) deleted.C:6:6: note: candidate: 'void f(...)' 6 | void f(...); | ^ deleted.C:7:6: note: candidate: 'void f(int, int)' 7 | void f(int, int); | ^ deleted.C:7:6: note: candidate expects 2 arguments, 1 provided These notes are controlled by a new command line flag -fdiagnostics-all-candidates which also controls whether we note ignored candidates more generally. gcc/ChangeLog: * doc/invoke.texi (C++ Dialect Options): Document -fdiagnostics-all-candidates. gcc/c-family/ChangeLog: * c.opt: Add -fdiagnostics-all-candidates. gcc/cp/ChangeLog: * call.cc (print_z_candidates): Only print ignored candidates when -fdiagnostics-all-candidates is set, otherwise suggest the flag. (build_over_call): When diagnosing deletedness, note other candidates only if -fdiagnostics-all-candidates is set, otherwise suggest the flag. gcc/testsuite/ChangeLog: * g++.dg/overload/error6.C: Pass -fdiagnostics-all-candidates. * g++.dg/cpp0x/deleted16.C: New test. * g++.dg/cpp0x/deleted16a.C: New test. * g++.dg/overload/error6a.C: New test.
2023-12-13c-family: rename warn_for_address_or_pointer_of_packed_memberJason Merrill2-19/+15
Following the last patch, let's rename the functions to reflect the change in behavior. gcc/c-family/ChangeLog: * c-warn.cc (check_address_or_pointer_of_packed_member): Rename to check_address_of_packed_member. (check_and_warn_address_or_pointer_of_packed_member): Rename to check_and_warn_address_of_packed_member. (warn_for_address_or_pointer_of_packed_member): Rename to warn_for_address_of_packed_member. * c-common.h: Adjust. gcc/c/ChangeLog: * c-typeck.cc (convert_for_assignment): Adjust call to warn_for_address_of_packed_member. gcc/cp/ChangeLog: * call.cc (convert_for_arg_passing) * typeck.cc (convert_for_assignment): Adjust call to warn_for_address_of_packed_member.
2023-12-13c-family: -Waddress-of-packed-member and castsJason Merrill1-55/+3
-Waddress-of-packed-member, in addition to the documented warning about actually taking the address of a packed member, also warns about casting from a pointer to a TYPE_PACKED type to a pointer to a type with greater alignment. This wrongly warns if the source is a pointer to enum when -fshort-enums is on, since that is also represented by TYPE_PACKED. And there's already -Wcast-align to catch casting from pointer to less aligned type (packed or otherwise) to pointer to more aligned type; even apart from the enum problem, this seems like a somewhat arbitrary subset of that warning. So, this patch removes the undocumented type-based warning from -Waddress-of-packed-member. Some of the tests where the warning is desirable I changed to use -Wcast-align=strict instead. The ones that require -Wno-incompatible-pointer-types I just removed. gcc/c-family/ChangeLog: * c-warn.cc (check_address_or_pointer_of_packed_member): Remove warning based on TYPE_PACKED. gcc/testsuite/ChangeLog: * c-c++-common/Waddress-of-packed-member-1.c: Don't expect a warning on the cast cases. * c-c++-common/pr51628-35.c: Use -Wcast-align=strict. * g++.dg/warn/Waddress-of-packed-member3.C: Likewise. * gcc.dg/pr88928.c: Likewise. * gcc.dg/pr51628-20.c: Removed. * gcc.dg/pr51628-21.c: Removed. * gcc.dg/pr51628-25.c: Removed.
2023-12-13OpenMP/OpenACC: Rework clause expansion and nested struct handlingJulian Brown2-7/+939
This patch reworks clause expansion in the C, C++ and (to a lesser extent) Fortran front ends for OpenMP and OpenACC mapping nodes used in GPU offloading support. At present a single clause may be turned into several mapping nodes, or have its mapping type changed, in several places scattered through the front- and middle-end. The analysis relating to which particular transformations are needed for some given expression has become quite hard to follow. Briefly, we manipulate clause types in the following places: 1. During parsing, in c_omp_adjust_map_clauses. Depending on a set of rules, we may change a FIRSTPRIVATE_POINTER (etc.) mapping into ATTACH_DETACH, or mark the decl addressable. 2. In semantics.cc or c-typeck.cc, clauses are expanded in handle_omp_array_sections (called via {c_}finish_omp_clauses, or in finish_omp_clauses itself. The two cases are for processing array sections (the former), or non-array sections (the latter). 3. In gimplify.cc, we build sibling lists for struct accesses, which groups and sorts accesses along with their struct base, creating new ALLOC/RELEASE nodes for pointers. 4. In gimplify.cc:gimplify_adjust_omp_clauses, mapping nodes may be adjusted or created. This patch doesn't completely disrupt this scheme, though clause types are no longer adjusted in c_omp_adjust_map_clauses (step 1). Clause expansion in step 2 (for C and C++) now uses a single, unified mechanism, parts of which are also reused for analysis in step 3. Rather than the kind-of "ad-hoc" pattern matching on addresses used to expand clauses used at present, a new method for analysing addresses is introduced. This does a recursive-descent tree walk on expression nodes, and emits a vector of tokens describing each "part" of the address. This tokenized address can then be translated directly into mapping nodes, with the assurance that no part of the expression has been inadvertently skipped or misinterpreted. In this way, all the variations of ways pointers, arrays, references and component accesses might be combined can be teased apart into easily-understood cases - and we know we've "parsed" the whole address before we start analysis, so the right code paths can easily be selected. For example, a simple access "arr[idx]" might parse as: base-decl access-indexed-array or "mystruct->foo[x]" with a pointer "foo" component might parse as: base-decl access-pointer component-selector access-pointer A key observation is that support for "array" bases, e.g. accesses whose root nodes are not structures, but describe scalars or arrays, and also *one-level deep* structure accesses, have first-class support in gimplify and beyond. Expressions that use deeper struct accesses or e.g. multiple indirections were more problematic: some cases worked, but lots of cases didn't. This patch reimplements the support for those in gimplify.cc, again using the new "address tokenization" support. An expression like "mystruct->foo->bar[0:10]" used in a mapping node will translate the right-hand access directly in the front-end. The base for the access will be "mystruct->foo". This is handled recursively in gimplify.cc -- there may be several accesses of "mystruct"'s members on the same directive, so the sibling-list building machinery can be used again. (This was already being done for OpenACC, but the new implementation differs somewhat in details, and is more robust.) For OpenMP, in the case where the base pointer itself, i.e. "mystruct->foo" here, is NOT mapped on the same directive, we create a "fragile" mapping. This turns the "foo" component access into a zero-length allocation (which is a new feature for the runtime, so support has been added there too). A couple of changes have been made to how mapping clauses are turned into mapping nodes: The first change is based on the observation that it is probably never correct to use GOMP_MAP_ALWAYS_POINTER for component accesses (e.g. for references), because if the containing struct is already mapped on the target then the host version of the pointer in question will be corrupted if the struct is copied back from the target. This patch removes all such uses, across each of C, C++ and Fortran. The second change is to the way that GOMP_MAP_ATTACH_DETACH nodes are processed during sibling-list creation. For OpenMP, for pointer components, we must map the base pointer separately from an array section that uses the base pointer, so e.g. we must have both "map(mystruct.base)" and "map(mystruct.base[0:10])" mappings. These create nodes such as: GOMP_MAP_TOFROM mystruct.base G_M_TOFROM *mystruct.base [len: 10*elemsize] G_M_ATTACH_DETACH mystruct.base Instead of using the first of these directly when building the struct sibling list then skipping the group using GOMP_MAP_ATTACH_DETACH, leading to: GOMP_MAP_STRUCT mystruct [len: 1] GOMP_MAP_TOFROM mystruct.base we now introduce a new "mini-pass", omp_resolve_clause_dependencies, that drops the GOMP_MAP_TOFROM for the base pointer, marks the second group as having had a base-pointer mapping, then omp_build_struct_sibling_lists can create: GOMP_MAP_STRUCT mystruct [len: 1] GOMP_MAP_ALLOC mystruct.base [len: ptrsize] This ends up working better in many cases, particularly those involving references. (The "alloc" space is immediately overwritten by a pointer attachment, so this is mildly more efficient than a redundant TO mapping at runtime also.) There is support in the address tokenizer for "arbitrary" base expressions which aren't rooted at a decl, but that is not used as present because such addresses are disallowed at parse time. In the front-ends, the address tokenization machinery is mostly only used for clause expansion and not for diagnostics at present. It could be used for those too, which would allow more of my previous "address inspector" implementation to be removed. The new bits in gimplify.cc work with OpenACC also. This version of the patch addresses several first-pass review comments from Tobias, and fixes a few previously-missed cases for manually-managed ragged array mappings (including cases using references). Some arbitrary differences between handling of clause expansion for C vs. C++ have also been fixed, and some fragments from later in the patch series have been moved forward (where they were useful for fixing bugs). Several new test cases have been added. 2023-11-29 Julian Brown <julian@codesourcery.com> gcc/c-family/ * c-common.h (c_omp_region_type): Add C_ORT_EXIT_DATA, C_ORT_OMP_EXIT_DATA and C_ORT_ACC_TARGET. (omp_addr_token): Add forward declaration. (c_omp_address_inspector): New class. * c-omp.cc (c_omp_adjust_map_clauses): Mark decls addressable here, but do not change any mapping node types. (c_omp_address_inspector::unconverted_ref_origin, c_omp_address_inspector::component_access_p, c_omp_address_inspector::check_clause, c_omp_address_inspector::get_root_term, c_omp_address_inspector::map_supported_p, c_omp_address_inspector::get_origin, c_omp_address_inspector::maybe_unconvert_ref, c_omp_address_inspector::maybe_zero_length_array_section, c_omp_address_inspector::expand_array_base, c_omp_address_inspector::expand_component_selector, c_omp_address_inspector::expand_map_clause): New methods. (omp_expand_access_chain): New function. gcc/c/ * c-parser.cc (c_parser_oacc_all_clauses): Add TARGET_P parameter. Use to select region type for c_finish_omp_clauses call. (c_parser_oacc_loop): Update calls to c_parser_oacc_all_clauses. (c_parser_oacc_compute): Likewise. (c_parser_omp_target_data, c_parser_omp_target_enter_data): Support ATTACH kind. (c_parser_omp_target_exit_data): Support DETACH kind. (check_clauses): Handle GOMP_MAP_POINTER and GOMP_MAP_ATTACH here. * c-typeck.cc (handle_omp_array_sections_1, handle_omp_array_sections, c_finish_omp_clauses): Use c_omp_address_inspector class and OMP address tokenizer to analyze and expand map clause expressions. Fix some diagnostics. Fix "is OpenACC" condition for C_ORT_ACC_TARGET addition. gcc/cp/ * parser.cc (cp_parser_oacc_all_clauses): Add TARGET_P parameter. Use to select region type for finish_omp_clauses call. (cp_parser_omp_target_data, cp_parser_omp_target_enter_data): Support GOMP_MAP_ATTACH kind. (cp_parser_omp_target_exit_data): Support GOMP_MAP_DETACH kind. (cp_parser_oacc_declare): Update call to cp_parser_oacc_all_clauses. (cp_parser_oacc_loop): Update calls to cp_parser_oacc_all_clauses. (cp_parser_oacc_compute): Likewise. * pt.cc (tsubst_expr): Use C_ORT_ACC_TARGET for call to tsubst_omp_clauses for OpenACC compute regions. * semantics.cc (cp_omp_address_inspector): New class, derived from c_omp_address_inspector. (handle_omp_array_sections_1, handle_omp_array_sections, finish_omp_clauses): Use cp_omp_address_inspector class and OMP address tokenizer to analyze and expand OpenMP map clause expressions. Fix some diagnostics. Support C_ORT_ACC_TARGET. (finish_omp_target): Handle GOMP_MAP_POINTER. gcc/fortran/ * trans-openmp.cc (gfc_trans_omp_array_section): Add OPENMP parameter. Use GOMP_MAP_ATTACH_DETACH instead of GOMP_MAP_ALWAYS_POINTER for derived type components. (gfc_trans_omp_clauses): Update calls to gfc_trans_omp_array_section. gcc/ * gimplify.cc (build_struct_comp_nodes): Don't process GOMP_MAP_ATTACH_DETACH "middle" nodes here. (omp_mapping_group): Add REPROCESS_STRUCT and FRAGILE booleans for nested struct handling. (omp_strip_components_and_deref, omp_strip_indirections): Remove functions. (omp_get_attachment): Handle GOMP_MAP_DETACH here. (omp_group_last): Handle GOMP_MAP_*, GOMP_MAP_DETACH, GOMP_MAP_ATTACH_DETACH groups for "exit data" of reference-to-pointer component array sections. (omp_gather_mapping_groups_1): Initialise reprocess_struct and fragile fields. (omp_group_base): Handle GOMP_MAP_ATTACH_DETACH after GOMP_MAP_STRUCT. (omp_index_mapping_groups_1): Skip reprocess_struct groups. (omp_get_nonfirstprivate_group, omp_directive_maps_explicitly, omp_resolve_clause_dependencies, omp_first_chained_access_token): New functions. (omp_check_mapping_compatibility): Adjust accepted node combinations for "from" clauses using release instead of alloc. (omp_accumulate_sibling_list): Add GROUP_MAP, ADDR_TOKENS, FRAGILE_P, REPROCESSING_STRUCT, ADDED_TAIL parameters. Use OMP address tokenizer to analyze addresses. Reimplement nested struct handling, and implement "fragile groups". (omp_build_struct_sibling_lists): Adjust for changes to omp_accumulate_sibling_list. Recalculate bias for ATTACH_DETACH nodes after GOMP_MAP_STRUCT nodes. (gimplify_scan_omp_clauses): Call omp_resolve_clause_dependencies. Use OMP address tokenizer. (gimplify_adjust_omp_clauses_1): Use build_fold_indirect_ref_loc instead of build_simple_mem_ref_loc. * omp-general.cc (omp-general.h, tree-pretty-print.h): Include. (omp_addr_tokenizer): New namespace. (omp_addr_tokenizer::omp_addr_token): New. (omp_addr_tokenizer::omp_parse_component_selector, omp_addr_tokenizer::omp_parse_ref, omp_addr_tokenizer::omp_parse_pointer, omp_addr_tokenizer::omp_parse_access_method, omp_addr_tokenizer::omp_parse_access_methods, omp_addr_tokenizer::omp_parse_structure_base, omp_addr_tokenizer::omp_parse_structured_expr, omp_addr_tokenizer::omp_parse_array_expr, omp_addr_tokenizer::omp_access_chain_p, omp_addr_tokenizer::omp_accessed_addr): New functions. (omp_parse_expr, debug_omp_tokenized_addr): New functions. * omp-general.h (omp_addr_tokenizer::access_method_kinds, omp_addr_tokenizer::structure_base_kinds, omp_addr_tokenizer::token_type, omp_addr_tokenizer::omp_addr_token, omp_addr_tokenizer::omp_access_chain_p, omp_addr_tokenizer::omp_accessed_addr): New. (omp_addr_token, omp_parse_expr): New. * omp-low.cc (scan_sharing_clauses): Skip error check for references to pointers. * tree.h (OMP_CLAUSE_ATTACHMENT_MAPPING_ERASED): New macro. gcc/testsuite/ * c-c++-common/gomp/clauses-2.c: Fix error output. * c-c++-common/gomp/target-implicit-map-2.c: Adjust scan output. * c-c++-common/gomp/target-50.c: Adjust scan output. * c-c++-common/gomp/target-enter-data-1.c: Adjust scan output. * g++.dg/gomp/static-component-1.C: New test. * gcc.dg/gomp/target-3.c: Adjust scan output. * gfortran.dg/gomp/map-9.f90: Adjust scan output. libgomp/ * target.c (gomp_map_pointer): Modify zero-length array section pointer handling. (gomp_attach_pointer): Likewise. (gomp_map_fields_existing): Use gomp_map_0len_lookup. (gomp_attach_pointer): Allow attaching null pointers (or Fortran "unassociated" pointers). (gomp_map_vars_internal): Handle zero-sized struct members. Add diagnostic for unmapped struct pointer members. * testsuite/libgomp.c-c++-common/baseptrs-1.c: New test. * testsuite/libgomp.c-c++-common/baseptrs-2.c: New test. * testsuite/libgomp.c-c++-common/baseptrs-6.c: New test. * testsuite/libgomp.c-c++-common/baseptrs-7.c: New test. * testsuite/libgomp.c-c++-common/ptr-attach-2.c: New test. * testsuite/libgomp.c-c++-common/target-implicit-map-2.c: Fix missing "free". * testsuite/libgomp.c-c++-common/target-implicit-map-5.c: New test. * testsuite/libgomp.c-c++-common/target-map-zlas-1.c: New test. * testsuite/libgomp.c++/class-array-1.C: New test. * testsuite/libgomp.c++/baseptrs-3.C: New test. * testsuite/libgomp.c++/baseptrs-4.C: New test. * testsuite/libgomp.c++/baseptrs-5.C: New test. * testsuite/libgomp.c++/baseptrs-8.C: New test. * testsuite/libgomp.c++/baseptrs-9.C: New test. * testsuite/libgomp.c++/ref-mapping-1.C: New test. * testsuite/libgomp.c++/target-48.C: New test. * testsuite/libgomp.c++/target-49.C: New test. * testsuite/libgomp.c++/target-exit-data-reftoptr-1.C: New test. * testsuite/libgomp.c++/target-lambda-1.C: Update for OpenMP 5.2 semantics. * testsuite/libgomp.c++/target-this-3.C: Likewise. * testsuite/libgomp.c++/target-this-4.C: Likewise. * testsuite/libgomp.fortran/struct-elem-map-1.f90: Add temporary XFAIL. * testsuite/libgomp.fortran/target-enter-data-6.f90: Likewise.
2023-12-13Daily bump.GCC Administrator1-0/+6
2023-12-12ipa/92606 - properly handle no_icf attribute for variablesRichard Biener1-1/+2
The following adds no_icf handling for variables where the attribute was rejected. It also fixes the check for no_icf by checking both the source and the targets decl. PR ipa/92606 gcc/c-family/ * c-attribs.cc (handle_noicf_attribute): Also allow the attribute on global variables. gcc/ * ipa-icf.cc (sem_item_optimizer::merge_classes): Check both source and alias for the no_icf attribute. * doc/extend.texi (no_icf): Document variable attribute.
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