gcc/fortran/trans-array.h

   1 /* Header for array handling functions
   2    Copyright (C) 2002-2021 Free Software Foundation, Inc.
   3    Contributed by Paul Brook
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 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 /* Generate code to initialize and allocate an array.  Statements are added to
  22    se, which should contain an expression for the array descriptor.  */
  23 bool gfc_array_allocate (gfc_se *, gfc_expr *, tree, tree, tree, tree,
  24                          tree, tree *, gfc_expr *, tree, bool);
  25
  26 /* Allow the bounds of a loop to be set from a callee's array spec.  */
  27 void gfc_set_loop_bounds_from_array_spec (gfc_interface_mapping *,
  28                                           gfc_se *, gfc_array_spec *);
  29
  30 /* Generate code to create a temporary array.  */
  31 tree gfc_trans_create_temp_array (stmtblock_t *, stmtblock_t *, gfc_ss *,
  32                                   tree, tree, bool, bool, bool, locus *);
  33
  34 /* Generate function entry code for allocation of compiler allocated array
  35    variables.  */
  36 void gfc_trans_auto_array_allocation (tree, gfc_symbol *, gfc_wrapped_block *);
  37 /* Generate entry and exit code for dummy array parameters.  */
  38 void gfc_trans_dummy_array_bias (gfc_symbol *, tree, gfc_wrapped_block *);
  39 /* Generate entry and exit code for g77 calling convention arrays.  */
  40 void gfc_trans_g77_array (gfc_symbol *, gfc_wrapped_block *);
  41
  42 tree gfc_tree_array_size (stmtblock_t *, tree, gfc_expr *, tree);
  43
  44 tree gfc_full_array_size (stmtblock_t *, tree, int);
  45
  46 tree gfc_duplicate_allocatable (tree, tree, tree, int, tree);
  47
  48 tree gfc_copy_allocatable_data (tree dest, tree src, tree type, int rank);
  49
  50 tree gfc_duplicate_allocatable_nocopy (tree, tree, tree, int);
  51
  52 bool gfc_caf_is_dealloc_only (int);
  53
  54 tree gfc_nullify_alloc_comp (gfc_symbol *, tree, int, int cm = 0);
  55
  56 tree gfc_deallocate_alloc_comp (gfc_symbol *, tree, int, int cm = 0);
  57 tree gfc_bcast_alloc_comp (gfc_symbol *, gfc_expr *, int, tree,
  58                            tree, tree, tree);
  59 tree gfc_deallocate_alloc_comp_no_caf (gfc_symbol *, tree, int);
  60 tree gfc_reassign_alloc_comp_caf (gfc_symbol *, tree, tree);
  61
  62 tree gfc_copy_alloc_comp (gfc_symbol *, tree, tree, int, int);
  63
  64 tree gfc_copy_only_alloc_comp (gfc_symbol *, tree, tree, int);
  65
  66 tree gfc_allocate_pdt_comp (gfc_symbol *, tree, int, gfc_actual_arglist *);
  67 tree gfc_deallocate_pdt_comp (gfc_symbol *, tree, int);
  68 tree gfc_check_pdt_dummy (gfc_symbol *, tree, int, gfc_actual_arglist *);
  69
  70 tree gfc_alloc_allocatable_for_assignment (gfc_loopinfo*, gfc_expr*, gfc_expr*);
  71
  72 /* Add initialization for deferred arrays.  */
  73 void gfc_trans_deferred_array (gfc_symbol *, gfc_wrapped_block *);
  74 /* Generate an initializer for a static pointer or allocatable array.  */
  75 void gfc_trans_static_array_pointer (gfc_symbol *);
  76
  77 /* Get the procedure interface for a function call.  */
  78 gfc_symbol *gfc_get_proc_ifc_for_expr (gfc_expr *);
  79 /* Get the intrinsic symbol for an intrinsic function call.  */
  80 gfc_intrinsic_sym *gfc_get_intrinsic_for_expr (gfc_expr *);
  81 /* Generate scalarization information for an expression.  */
  82 gfc_ss *gfc_walk_expr (gfc_expr *);
  83 /* Workhorse for gfc_walk_expr.  */
  84 gfc_ss *gfc_walk_subexpr (gfc_ss *, gfc_expr *);
  85 /* Workhorse for gfc_walk_variable_expr.  */
  86 gfc_ss *gfc_walk_array_ref (gfc_ss *, gfc_expr *, gfc_ref * ref);
  87 /* Walk the arguments of an elemental function.  */
  88 gfc_ss *gfc_walk_elemental_function_args (gfc_ss *, gfc_actual_arglist *,
  89                                           gfc_intrinsic_sym *,
  90                                           gfc_ss_type);
  91 /* Walk an intrinsic function.  */
  92 gfc_ss *gfc_walk_intrinsic_function (gfc_ss *, gfc_expr *,
  93                                      gfc_intrinsic_sym *);
  94 /* Reverse the order of an SS chain.  */
  95 gfc_ss *gfc_reverse_ss (gfc_ss *);
  96
  97 /* Free the SS associated with a loop.  */
  98 void gfc_cleanup_loop (gfc_loopinfo *);
  99 /* Associate a SS chain with a loop.  */
 100 void gfc_add_ss_to_loop (gfc_loopinfo *, gfc_ss *);
 101 /* Mark a SS chain as used in this loop.  */
 102 void gfc_mark_ss_chain_used (gfc_ss *, unsigned);
 103 /* Free a gfc_ss chain.  */
 104 void gfc_free_ss_chain (gfc_ss *);
 105 /* Free a single gfc_ss element.  */
 106 void gfc_free_ss (gfc_ss *);
 107 /* Allocate a new array type ss.  */
 108 gfc_ss *gfc_get_array_ss (gfc_ss *, gfc_expr *, int, gfc_ss_type);
 109 /* Allocate a new temporary type ss.  */
 110 gfc_ss *gfc_get_temp_ss (tree, tree, int);
 111 /* Allocate a new scalar type ss.  */
 112 gfc_ss *gfc_get_scalar_ss (gfc_ss *, gfc_expr *);
 113
 114 bool gfc_scalar_elemental_arg_saved_as_reference (gfc_ss_info *);
 115
 116 /* Calculates the lower bound and stride of array sections.  */
 117 void gfc_conv_ss_startstride (gfc_loopinfo *);
 118
 119 void gfc_init_loopinfo (gfc_loopinfo *);
 120 void gfc_copy_loopinfo_to_se (gfc_se *, gfc_loopinfo *);
 121
 122 /* Marks the start of a scalarized expression, and declares loop variables.  */
 123 void gfc_start_scalarized_body (gfc_loopinfo *, stmtblock_t *);
 124 /* Generates the actual loops for a scalarized expression.  */
 125 void gfc_trans_scalarizing_loops (gfc_loopinfo *, stmtblock_t *);
 126 /* Mark the end of the main loop body and the start of the copying loop.  */
 127 void gfc_trans_scalarized_loop_boundary (gfc_loopinfo *, stmtblock_t *);
 128 /* Initialize the scalarization loop parameters.  */
 129 void gfc_conv_loop_setup (gfc_loopinfo *, locus *);
 130 /* Set each array's delta.  */
 131 void gfc_set_delta (gfc_loopinfo *);
 132 /* Resolve array assignment dependencies.  */
 133 void gfc_conv_resolve_dependencies (gfc_loopinfo *, gfc_ss *, gfc_ss *);
 134 /* Build a null array descriptor constructor.  */
 135 tree gfc_build_null_descriptor (tree);
 136
 137 /* Get a single array element.  */
 138 void gfc_conv_array_ref (gfc_se *, gfc_array_ref *, gfc_expr *, locus *);
 139 /* Translate a reference to a temporary array.  */
 140 void gfc_conv_tmp_array_ref (gfc_se * se);
 141
 142 /* Calculate the overall offset, including subreferences.  */
 143 void gfc_get_dataptr_offset (stmtblock_t*, tree, tree, tree, bool, gfc_expr*);
 144 /* Obtain the span of an array.  */
 145 tree gfc_get_array_span (tree, gfc_expr *);
 146 /* Evaluate an array expression.  */
 147 void gfc_conv_expr_descriptor (gfc_se *, gfc_expr *);
 148 /* Convert an array for passing as an actual function parameter.  */
 149 void gfc_conv_array_parameter (gfc_se *, gfc_expr *, bool,
 150                                const gfc_symbol *, const char *, tree *);
 151
 152 /* These work with both descriptors and descriptorless arrays.  */
 153 tree gfc_conv_array_data (tree);
 154 tree gfc_conv_array_offset (tree);
 155 /* Return either an INT_CST or an expression for that part of the descriptor.  */
 156 tree gfc_conv_array_stride (tree, int);
 157 tree gfc_conv_array_lbound (tree, int);
 158 tree gfc_conv_array_ubound (tree, int);
 159
 160 /* Set (co)bounds of an array.  */
 161 tree gfc_trans_array_bounds (tree, gfc_symbol *, tree *, stmtblock_t *);
 162 void gfc_trans_array_cobounds (tree, stmtblock_t *, const gfc_symbol *);
 163
 164 /* Build expressions for accessing components of an array descriptor.  */
 165 void gfc_get_descriptor_offsets_for_info (const_tree, tree *, tree *, tree *, tree *,
 166                                           tree *, tree *, tree *, tree *);
 167
 168 tree gfc_conv_descriptor_data_get (tree);
 169 tree gfc_conv_descriptor_data_addr (tree);
 170 tree gfc_conv_descriptor_offset_get (tree);
 171 tree gfc_conv_descriptor_span_get (tree);
 172 tree gfc_conv_descriptor_dtype (tree);
 173 tree gfc_conv_descriptor_rank (tree);
 174 tree gfc_conv_descriptor_elem_len (tree);
 175 tree gfc_conv_descriptor_attribute (tree);
 176 tree gfc_conv_descriptor_type (tree);
 177 tree gfc_get_descriptor_dimension (tree);
 178 tree gfc_conv_descriptor_stride_get (tree, tree);
 179 tree gfc_conv_descriptor_lbound_get (tree, tree);
 180 tree gfc_conv_descriptor_ubound_get (tree, tree);
 181 tree gfc_conv_descriptor_token (tree);
 182
 183 void gfc_conv_descriptor_data_set (stmtblock_t *, tree, tree);
 184 void gfc_conv_descriptor_offset_set (stmtblock_t *, tree, tree);
 185 void gfc_conv_descriptor_span_set (stmtblock_t *, tree, tree);
 186 void gfc_conv_descriptor_stride_set (stmtblock_t *, tree, tree, tree);
 187 void gfc_conv_descriptor_lbound_set (stmtblock_t *, tree, tree, tree);
 188 void gfc_conv_descriptor_ubound_set (stmtblock_t *, tree, tree, tree);
 189
 190 /* CFI descriptor.  */
 191 tree gfc_get_cfi_desc_base_addr (tree);
 192 tree gfc_get_cfi_desc_elem_len (tree);
 193 tree gfc_get_cfi_desc_version (tree);
 194 tree gfc_get_cfi_desc_rank (tree);
 195 tree gfc_get_cfi_desc_type (tree);
 196 tree gfc_get_cfi_desc_attribute (tree);
 197 tree gfc_get_cfi_dim_lbound (tree, tree);
 198 tree gfc_get_cfi_dim_extent (tree, tree);
 199 tree gfc_get_cfi_dim_sm (tree, tree);
 200
 201
 202 /* Shift lower bound of descriptor, updating ubound and offset.  */
 203 void gfc_conv_shift_descriptor_lbound (stmtblock_t*, tree, int, tree);
 204
 205 /* Add pre-loop scalarization code for intrinsic functions which require
 206    special handling.  */
 207 void gfc_add_intrinsic_ss_code (gfc_loopinfo *, gfc_ss *);
 208
 209 /* Functions for constant array constructor processing.  */
 210 unsigned HOST_WIDE_INT gfc_constant_array_constructor_p (gfc_constructor_base);
 211 tree gfc_build_constant_array_constructor (gfc_expr *, tree);
 212
 213 /* Copy a string from src to dest.  */
 214 void gfc_trans_string_copy (stmtblock_t *, tree, tree, int, tree, tree, int);
 215
 216 /* Calculate extent / size of an array.  */
 217 tree gfc_conv_array_extent_dim (tree, tree, tree*);
 218 tree gfc_conv_descriptor_size (tree, int);
 219 tree gfc_conv_descriptor_cosize (tree, int, int);