LCOV - code coverage report
Current view: top level - gcc/cp - cp-lang.c (source / functions) Hit Total Coverage
Test: gcc.info Lines: 47 49 95.9 %
Date: 2020-03-28 11:57:23 Functions: 9 10 90.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /* Language-dependent hooks for C++.
       2                 :            :    Copyright (C) 2001-2020 Free Software Foundation, Inc.
       3                 :            :    Contributed by Alexandre Oliva  <aoliva@redhat.com>
       4                 :            : 
       5                 :            : This file is part of GCC.
       6                 :            : 
       7                 :            : GCC is free software; you can redistribute it and/or modify
       8                 :            : it under the terms of the GNU General Public License as published by
       9                 :            : the Free Software Foundation; either version 3, or (at your option)
      10                 :            : any later version.
      11                 :            : 
      12                 :            : GCC is distributed in the hope that it will be useful,
      13                 :            : but WITHOUT ANY WARRANTY; without even the implied warranty of
      14                 :            : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15                 :            : GNU General Public License for more details.
      16                 :            : 
      17                 :            : You should have received a copy of the GNU General Public License
      18                 :            : along with GCC; see the file COPYING3.  If not see
      19                 :            : <http://www.gnu.org/licenses/>.  */
      20                 :            : 
      21                 :            : #include "config.h"
      22                 :            : #include "system.h"
      23                 :            : #include "coretypes.h"
      24                 :            : #include "cp-tree.h"
      25                 :            : #include "stor-layout.h"
      26                 :            : #include "langhooks.h"
      27                 :            : #include "langhooks-def.h"
      28                 :            : #include "cp-objcp-common.h"
      29                 :            : 
      30                 :            : enum c_language_kind c_language = clk_cxx;
      31                 :            : static const char * cxx_dwarf_name (tree t, int verbosity);
      32                 :            : static enum classify_record cp_classify_record (tree type);
      33                 :            : static tree cp_eh_personality (void);
      34                 :            : static tree get_template_innermost_arguments_folded (const_tree);
      35                 :            : static tree get_template_argument_pack_elems_folded (const_tree);
      36                 :            : static tree cxx_enum_underlying_base_type (const_tree);
      37                 :            : 
      38                 :            : /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
      39                 :            :    consequently, there should be very few hooks below.  */
      40                 :            : 
      41                 :            : #undef LANG_HOOKS_NAME
      42                 :            : #define LANG_HOOKS_NAME "GNU C++"
      43                 :            : #undef LANG_HOOKS_INIT
      44                 :            : #define LANG_HOOKS_INIT cxx_init
      45                 :            : #undef LANG_HOOKS_CLASSIFY_RECORD
      46                 :            : #define LANG_HOOKS_CLASSIFY_RECORD cp_classify_record
      47                 :            : #undef LANG_HOOKS_GENERIC_TYPE_P
      48                 :            : #define LANG_HOOKS_GENERIC_TYPE_P class_tmpl_impl_spec_p
      49                 :            : 
      50                 :            : #undef LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS
      51                 :            : #define LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS \
      52                 :            :         get_primary_template_innermost_parameters
      53                 :            : #undef LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS
      54                 :            : #define LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS \
      55                 :            :         get_template_innermost_arguments_folded
      56                 :            : #undef LANG_HOOKS_FUNCTION_PARAMETER_PACK_P
      57                 :            : #define LANG_HOOKS_FUNCTION_PARAMETER_PACK_P \
      58                 :            :         function_parameter_pack_p
      59                 :            : #undef LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS
      60                 :            : #define LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS \
      61                 :            :         get_template_argument_pack_elems_folded
      62                 :            : #undef LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P
      63                 :            : #define LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P \
      64                 :            :         template_template_parameter_p
      65                 :            : #undef LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P
      66                 :            : #define LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P \
      67                 :            :         function_parameter_expanded_from_pack_p
      68                 :            : #undef LANG_HOOKS_GET_GENERIC_FUNCTION_DECL
      69                 :            : #define LANG_HOOKS_GET_GENERIC_FUNCTION_DECL get_function_template_decl
      70                 :            : #undef LANG_HOOKS_DWARF_NAME
      71                 :            : #define LANG_HOOKS_DWARF_NAME cxx_dwarf_name
      72                 :            : #undef LANG_HOOKS_INIT_TS
      73                 :            : #define LANG_HOOKS_INIT_TS cp_common_init_ts
      74                 :            : #undef LANG_HOOKS_EH_PERSONALITY
      75                 :            : #define LANG_HOOKS_EH_PERSONALITY cp_eh_personality
      76                 :            : #undef LANG_HOOKS_EH_RUNTIME_TYPE
      77                 :            : #define LANG_HOOKS_EH_RUNTIME_TYPE build_eh_type_type
      78                 :            : #undef LANG_HOOKS_ENUM_UNDERLYING_BASE_TYPE
      79                 :            : #define LANG_HOOKS_ENUM_UNDERLYING_BASE_TYPE cxx_enum_underlying_base_type
      80                 :            : 
      81                 :            : #if CHECKING_P
      82                 :            : #undef LANG_HOOKS_RUN_LANG_SELFTESTS
      83                 :            : #define LANG_HOOKS_RUN_LANG_SELFTESTS selftest::run_cp_tests
      84                 :            : #endif /* #if CHECKING_P */
      85                 :            : 
      86                 :            : #undef LANG_HOOKS_GET_SUBSTRING_LOCATION
      87                 :            : #define LANG_HOOKS_GET_SUBSTRING_LOCATION c_get_substring_location
      88                 :            : 
      89                 :            : /* Each front end provides its own lang hook initializer.  */
      90                 :            : struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
      91                 :            : 
      92                 :            : /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
      93                 :            :    there should be very few routines below.  */
      94                 :            : 
      95                 :            : /* The following function does something real, but only in Objective-C++.  */
      96                 :            : 
      97                 :            : tree
      98                 :   75929800 : objcp_tsubst_copy_and_build (tree /*t*/,
      99                 :            :                              tree /*args*/,
     100                 :            :                              tsubst_flags_t /*complain*/,
     101                 :            :                              tree /*in_decl*/,
     102                 :            :                              bool /*function_p*/)
     103                 :            : {
     104                 :   75929800 :   return NULL_TREE;
     105                 :            : }
     106                 :            : 
     107                 :            : static const char *
     108                 :   31780700 : cxx_dwarf_name (tree t, int verbosity)
     109                 :            : {
     110                 :   31780700 :   gcc_assert (DECL_P (t));
     111                 :            : 
     112                 :   31780700 :   if (DECL_NAME (t) && IDENTIFIER_ANON_P (DECL_NAME (t)))
     113                 :            :     return NULL;
     114                 :   31499400 :   if (verbosity >= 2)
     115                 :    9981100 :     return decl_as_dwarf_string (t,
     116                 :            :                                  TFF_DECL_SPECIFIERS | TFF_UNQUALIFIED_NAME
     117                 :    9981100 :                                  | TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS);
     118                 :            : 
     119                 :   21518300 :   return lang_decl_dwarf_name (t, verbosity, false);
     120                 :            : }
     121                 :            : 
     122                 :            : static enum classify_record
     123                 :    9981140 : cp_classify_record (tree type)
     124                 :            : {
     125                 :    9981140 :   if (TYPE_LANG_SPECIFIC (type)
     126                 :    9981140 :       && CLASSTYPE_DECLARED_CLASS (type))
     127                 :     545407 :     return RECORD_IS_CLASS;
     128                 :            : 
     129                 :            :   return RECORD_IS_STRUCT;
     130                 :            : }
     131                 :            : 
     132                 :            : static GTY(()) tree cp_eh_personality_decl;
     133                 :            : 
     134                 :            : static tree
     135                 :     531310 : cp_eh_personality (void)
     136                 :            : {
     137                 :     531310 :   if (!cp_eh_personality_decl)
     138                 :      22846 :     cp_eh_personality_decl = build_personality_function ("gxx");
     139                 :            : 
     140                 :     531310 :   return cp_eh_personality_decl;
     141                 :            : }
     142                 :            : 
     143                 :            : /* This is a subroutine of fold_cplus_constants.  It returns TRUE if T
     144                 :            :    is a C++ specific constant that needs to be folded further before
     145                 :            :    being passed to the debug info emitter.  */
     146                 :            : 
     147                 :            : static bool
     148                 :   54953600 : template_arg_needs_folding (const_tree t)
     149                 :            : {
     150                 :            :   /* For now only PTRMEM_CST nodes are to be folded further.  */
     151                 :          0 :   if (TREE_CODE (t) == PTRMEM_CST)
     152                 :          0 :     return true;
     153                 :            :   return false;
     154                 :            : }
     155                 :            : 
     156                 :            : /* Fold the elements of the TREE_VEC C which are C++ specific nodes
     157                 :            :    that would need folding so that they can be processed by the debug
     158                 :            :    info emitter. This is a subroutine of
     159                 :            :    get_template_innermost_arguments_folded and
     160                 :            :    get_template_argument_pack_elems_folded.  */
     161                 :            : 
     162                 :            : static tree
     163                 :   69437900 : fold_cplus_constants (const_tree c)
     164                 :            : {
     165                 :   69437900 :   tree folded_elems, elems = CONST_CAST_TREE (c);
     166                 :   69437900 :   int vec_len, i;
     167                 :            : 
     168                 :   69437900 :   if (elems == NULL_TREE || elems == error_mark_node)
     169                 :            :     return elems;
     170                 :            : 
     171                 :   31641800 :   vec_len = TREE_VEC_LENGTH (elems);
     172                 :            : 
     173                 :            :   /* First check if there is at least one element that needs
     174                 :            :      folding. If there is none, we just return ELEMS. Otherwise create
     175                 :            :      and return a new tree vector that contains the folded versions of
     176                 :            :      ELEMS. This is to avoid allocating memory if we don't need
     177                 :            :      to.  */
     178                 :   86595300 :   for (i = 0; i < vec_len; ++i)
     179                 :            :     {
     180                 :   54953600 :       if (template_arg_needs_folding (TREE_VEC_ELT (elems, i)))
     181                 :            :         break;
     182                 :            :     }
     183                 :   31641800 :   if (i == vec_len)
     184                 :            :     return elems;
     185                 :            : 
     186                 :         45 :   folded_elems = make_tree_vec (vec_len);
     187                 :        105 :   for (i = 0; i < vec_len; ++i)
     188                 :            :     {
     189                 :         60 :       tree elem = TREE_VEC_ELT (elems, i);
     190                 :         60 :       TREE_VEC_ELT (folded_elems, i) =  
     191                 :         60 :         (elem && !TYPE_P (elem)) ? cplus_expand_constant (elem) : elem;
     192                 :            : 
     193                 :            :     }
     194                 :            :   return folded_elems;
     195                 :            : }
     196                 :            : 
     197                 :            : /* The C++ implementation of the LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS
     198                 :            :    hook. It returns the innermost template arguments of type T, and
     199                 :            :    makes sure those arguments are folded enough for the debug info
     200                 :            :    emitter.  */
     201                 :            : 
     202                 :            : static tree
     203                 :   26193900 : get_template_innermost_arguments_folded (const_tree t)
     204                 :            : {
     205                 :   26193900 :   return fold_cplus_constants (get_template_innermost_arguments (t));
     206                 :            : }
     207                 :            : 
     208                 :            : static tree
     209                 :   43243900 : get_template_argument_pack_elems_folded (const_tree t)
     210                 :            : {
     211                 :   43243900 :   return fold_cplus_constants (get_template_argument_pack_elems (t));
     212                 :            : }
     213                 :            : 
     214                 :            : /* The C++ version of the enum_underlying_base_type langhook.
     215                 :            :    See also cp/semantics.c (finish_underlying_type).  */
     216                 :            : 
     217                 :            : static
     218                 :     221277 : tree cxx_enum_underlying_base_type (const_tree type)
     219                 :            : {
     220                 :     221277 :   tree underlying_type = ENUM_UNDERLYING_TYPE (type);
     221                 :            : 
     222                 :     221277 :   if (! ENUM_FIXED_UNDERLYING_TYPE_P (type))
     223                 :     210721 :     underlying_type
     224                 :     210721 :       = c_common_type_for_mode (TYPE_MODE (underlying_type),
     225                 :     210721 :                                 TYPE_UNSIGNED (underlying_type));
     226                 :            : 
     227                 :     221277 :   return underlying_type;
     228                 :            : }
     229                 :            : 
     230                 :            : #if CHECKING_P
     231                 :            : 
     232                 :            : namespace selftest {
     233                 :            : 
     234                 :            : /* Implementation of LANG_HOOKS_RUN_LANG_SELFTESTS for the C++ frontend.  */
     235                 :            : 
     236                 :            : void
     237                 :          1 : run_cp_tests (void)
     238                 :            : {
     239                 :            :   /* Run selftests shared within the C family.  */
     240                 :          1 :   c_family_tests ();
     241                 :            : 
     242                 :            :   /* Additional C++-specific tests.  */
     243                 :          1 :   cp_pt_c_tests ();
     244                 :          1 :   cp_tree_c_tests ();
     245                 :          1 : }
     246                 :            : 
     247                 :            : } // namespace selftest
     248                 :            : 
     249                 :            : #endif /* #if CHECKING_P */
     250                 :            : 
     251                 :            : 
     252                 :            : #include "gt-cp-cp-lang.h"
     253                 :            : #include "gtype-cp.h"

Generated by: LCOV version 1.0

LCOV profile is generated on x86_64 machine using following configure options: configure --disable-bootstrap --enable-coverage=opt --enable-languages=c,c++,fortran,go,jit,lto --enable-host-shared. GCC test suite is run with the built compiler.