1 /* Header for array handling functions
2 Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
3 Free Software Foundation, Inc.
4 Contributed by Paul Brook
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 /* Generate code to free an array. */
23 tree gfc_array_deallocate (tree, tree, gfc_expr*);
25 /* Generate code to initialize an allocate an array. Statements are added to
26 se, which should contain an expression for the array descriptor. */
27 bool gfc_array_allocate (gfc_se *, gfc_expr *, tree, tree, tree);
29 /* Allow the bounds of a loop to be set from a callee's array spec. */
30 void gfc_set_loop_bounds_from_array_spec (gfc_interface_mapping *,
31 gfc_se *, gfc_array_spec *);
33 /* Generate code to create a temporary array. */
34 tree gfc_trans_create_temp_array (stmtblock_t *, stmtblock_t *, gfc_loopinfo *,
35 gfc_ss_info *, tree, tree, bool, bool, bool,
38 /* Generate function entry code for allocation of compiler allocated array
40 void gfc_trans_auto_array_allocation (tree, gfc_symbol *, gfc_wrapped_block *);
41 /* Generate entry and exit code for dummy array parameters. */
42 void gfc_trans_dummy_array_bias (gfc_symbol *, tree, gfc_wrapped_block *);
43 /* Generate entry and exit code for g77 calling convention arrays. */
44 void gfc_trans_g77_array (gfc_symbol *, gfc_wrapped_block *);
45 /* Generate code to deallocate an array, if it is allocated. */
46 tree gfc_trans_dealloc_allocated (tree);
48 tree gfc_duplicate_allocatable (tree dest, tree src, tree type, int rank);
50 tree gfc_copy_allocatable_data (tree dest, tree src, tree type, int rank);
52 tree gfc_nullify_alloc_comp (gfc_symbol *, tree, int);
54 tree gfc_deallocate_alloc_comp (gfc_symbol *, tree, int);
56 tree gfc_copy_alloc_comp (gfc_symbol *, tree, tree, int);
58 tree gfc_copy_only_alloc_comp (gfc_symbol *, tree, tree, int);
60 tree gfc_alloc_allocatable_for_assignment (gfc_loopinfo*, gfc_expr*, gfc_expr*);
62 bool gfc_is_reallocatable_lhs (gfc_expr *);
64 /* Add initialization for deferred arrays. */
65 void gfc_trans_deferred_array (gfc_symbol *, gfc_wrapped_block *);
66 /* Generate an initializer for a static pointer or allocatable array. */
67 void gfc_trans_static_array_pointer (gfc_symbol *);
69 /* Generate scalarization information for an expression. */
70 gfc_ss *gfc_walk_expr (gfc_expr *);
71 /* Workhorse for gfc_walk_expr. */
72 gfc_ss *gfc_walk_subexpr (gfc_ss *, gfc_expr *);
73 /* Walk the arguments of an elemental function. */
74 gfc_ss *gfc_walk_elemental_function_args (gfc_ss *, gfc_actual_arglist *,
76 /* Walk an intrinsic function. */
77 gfc_ss *gfc_walk_intrinsic_function (gfc_ss *, gfc_expr *,
79 /* Reverse the order of an SS chain. */
80 gfc_ss *gfc_reverse_ss (gfc_ss *);
82 /* Free the SS associated with a loop. */
83 void gfc_cleanup_loop (gfc_loopinfo *);
84 /* Associate a SS chain with a loop. */
85 void gfc_add_ss_to_loop (gfc_loopinfo *, gfc_ss *);
86 /* Mark a SS chain as used in this loop. */
87 void gfc_mark_ss_chain_used (gfc_ss *, unsigned);
88 /* Free a gfc_ss chain. */
89 void gfc_free_ss_chain (gfc_ss *);
90 /* Allocate a new array type ss. */
91 gfc_ss *gfc_get_array_ss (gfc_ss *, gfc_expr *, int, gfc_ss_type);
92 /* Allocate a new temporary type ss. */
93 gfc_ss *gfc_get_temp_ss (tree, tree, int);
94 /* Allocate a new scalar type ss. */
95 gfc_ss *gfc_get_scalar_ss (gfc_ss *, gfc_expr *);
97 /* Calculates the lower bound and stride of array sections. */
98 void gfc_conv_ss_startstride (gfc_loopinfo *);
100 void gfc_init_loopinfo (gfc_loopinfo *);
101 void gfc_copy_loopinfo_to_se (gfc_se *, gfc_loopinfo *);
103 /* Marks the start of a scalarized expression, and declares loop variables. */
104 void gfc_start_scalarized_body (gfc_loopinfo *, stmtblock_t *);
105 /* Generates one actual loop for a scalarized expression. */
106 void gfc_trans_scalarized_loop_end (gfc_loopinfo *, int, stmtblock_t *);
107 /* Generates the actual loops for a scalarized expression. */
108 void gfc_trans_scalarizing_loops (gfc_loopinfo *, stmtblock_t *);
109 /* Mark the end of the main loop body and the start of the copying loop. */
110 void gfc_trans_scalarized_loop_boundary (gfc_loopinfo *, stmtblock_t *);
111 /* Initialize the scalarization loop parameters. */
112 void gfc_conv_loop_setup (gfc_loopinfo *, locus *);
113 /* Resolve array assignment dependencies. */
114 void gfc_conv_resolve_dependencies (gfc_loopinfo *, gfc_ss *, gfc_ss *);
115 /* Build a null array descriptor constructor. */
116 tree gfc_build_null_descriptor (tree);
118 /* Get a single array element. */
119 void gfc_conv_array_ref (gfc_se *, gfc_array_ref *, gfc_symbol *, locus *);
120 /* Translate a reference to a temporary array. */
121 void gfc_conv_tmp_array_ref (gfc_se * se);
122 /* Translate a reference to an array temporary. */
123 void gfc_conv_tmp_ref (gfc_se *);
125 /* Evaluate an array expression. */
126 void gfc_conv_expr_descriptor (gfc_se *, gfc_expr *, gfc_ss *);
127 /* Convert an array for passing as an actual function parameter. */
128 void gfc_conv_array_parameter (gfc_se *, gfc_expr *, gfc_ss *, bool,
129 const gfc_symbol *, const char *, tree *);
130 /* Evaluate and transpose a matrix expression. */
131 void gfc_conv_array_transpose (gfc_se *, gfc_expr *);
133 /* These work with both descriptors and descriptorless arrays. */
134 tree gfc_conv_array_data (tree);
135 tree gfc_conv_array_offset (tree);
136 /* Return either an INT_CST or an expression for that part of the descriptor. */
137 tree gfc_conv_array_stride (tree, int);
138 tree gfc_conv_array_lbound (tree, int);
139 tree gfc_conv_array_ubound (tree, int);
141 /* Set cobounds of an array. */
142 void gfc_trans_array_cobounds (tree, stmtblock_t *, const gfc_symbol *);
144 /* Build expressions for accessing components of an array descriptor. */
145 tree gfc_conv_descriptor_data_get (tree);
146 tree gfc_conv_descriptor_data_addr (tree);
147 tree gfc_conv_descriptor_offset_get (tree);
148 tree gfc_conv_descriptor_dtype (tree);
149 tree gfc_conv_descriptor_stride_get (tree, tree);
150 tree gfc_conv_descriptor_lbound_get (tree, tree);
151 tree gfc_conv_descriptor_ubound_get (tree, tree);
152 tree gfc_conv_descriptor_token (tree);
154 void gfc_conv_descriptor_data_set (stmtblock_t *, tree, tree);
155 void gfc_conv_descriptor_offset_set (stmtblock_t *, tree, tree);
156 void gfc_conv_descriptor_stride_set (stmtblock_t *, tree, tree, tree);
157 void gfc_conv_descriptor_lbound_set (stmtblock_t *, tree, tree, tree);
158 void gfc_conv_descriptor_ubound_set (stmtblock_t *, tree, tree, tree);
160 /* Shift lower bound of descriptor, updating ubound and offset. */
161 void gfc_conv_shift_descriptor_lbound (stmtblock_t*, tree, int, tree);
163 /* Add pre-loop scalarization code for intrinsic functions which require
165 void gfc_add_intrinsic_ss_code (gfc_loopinfo *, gfc_ss *);
167 /* Functions for constant array constructor processing. */
168 unsigned HOST_WIDE_INT gfc_constant_array_constructor_p (gfc_constructor_base);
169 tree gfc_build_constant_array_constructor (gfc_expr *, tree);
171 /* Copy a string from src to dest. */
172 void gfc_trans_string_copy (stmtblock_t *, tree, tree, int, tree, tree, int);
174 /* Calculate extent / size of an array. */
175 tree gfc_conv_array_extent_dim (tree, tree, tree*);
176 tree gfc_conv_descriptor_size (tree, int);
177 tree gfc_conv_descriptor_cosize (tree, int, int);