4743 lines
138 KiB
C
4743 lines
138 KiB
C
/* Backend function setup
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Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
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Free Software Foundation, Inc.
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Contributed by Paul Brook
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* trans-decl.c -- Handling of backend function and variable decls, etc */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tree.h"
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#include "tree-dump.h"
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#include "gimple.h"
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#include "ggc.h"
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#include "toplev.h"
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#include "tm.h"
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#include "rtl.h"
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#include "target.h"
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#include "function.h"
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#include "flags.h"
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#include "cgraph.h"
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#include "debug.h"
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#include "gfortran.h"
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#include "pointer-set.h"
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#include "constructor.h"
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#include "trans.h"
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#include "trans-types.h"
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#include "trans-array.h"
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#include "trans-const.h"
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/* Only for gfc_trans_code. Shouldn't need to include this. */
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#include "trans-stmt.h"
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#define MAX_LABEL_VALUE 99999
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/* Holds the result of the function if no result variable specified. */
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static GTY(()) tree current_fake_result_decl;
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static GTY(()) tree parent_fake_result_decl;
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static GTY(()) tree current_function_return_label;
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/* Holds the variable DECLs for the current function. */
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static GTY(()) tree saved_function_decls;
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static GTY(()) tree saved_parent_function_decls;
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static struct pointer_set_t *nonlocal_dummy_decl_pset;
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static GTY(()) tree nonlocal_dummy_decls;
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/* Holds the variable DECLs that are locals. */
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static GTY(()) tree saved_local_decls;
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/* The namespace of the module we're currently generating. Only used while
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outputting decls for module variables. Do not rely on this being set. */
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static gfc_namespace *module_namespace;
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/* List of static constructor functions. */
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tree gfc_static_ctors;
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/* Function declarations for builtin library functions. */
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tree gfor_fndecl_pause_numeric;
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tree gfor_fndecl_pause_string;
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tree gfor_fndecl_stop_numeric;
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tree gfor_fndecl_stop_string;
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tree gfor_fndecl_error_stop_string;
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tree gfor_fndecl_runtime_error;
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tree gfor_fndecl_runtime_error_at;
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tree gfor_fndecl_runtime_warning_at;
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tree gfor_fndecl_os_error;
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tree gfor_fndecl_generate_error;
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tree gfor_fndecl_set_args;
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tree gfor_fndecl_set_fpe;
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tree gfor_fndecl_set_options;
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tree gfor_fndecl_set_convert;
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tree gfor_fndecl_set_record_marker;
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tree gfor_fndecl_set_max_subrecord_length;
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tree gfor_fndecl_ctime;
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tree gfor_fndecl_fdate;
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tree gfor_fndecl_ttynam;
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tree gfor_fndecl_in_pack;
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tree gfor_fndecl_in_unpack;
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tree gfor_fndecl_associated;
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/* Math functions. Many other math functions are handled in
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trans-intrinsic.c. */
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gfc_powdecl_list gfor_fndecl_math_powi[4][3];
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tree gfor_fndecl_math_ishftc4;
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tree gfor_fndecl_math_ishftc8;
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tree gfor_fndecl_math_ishftc16;
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/* String functions. */
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tree gfor_fndecl_compare_string;
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tree gfor_fndecl_concat_string;
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tree gfor_fndecl_string_len_trim;
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tree gfor_fndecl_string_index;
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tree gfor_fndecl_string_scan;
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tree gfor_fndecl_string_verify;
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tree gfor_fndecl_string_trim;
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tree gfor_fndecl_string_minmax;
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tree gfor_fndecl_adjustl;
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tree gfor_fndecl_adjustr;
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tree gfor_fndecl_select_string;
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tree gfor_fndecl_compare_string_char4;
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tree gfor_fndecl_concat_string_char4;
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tree gfor_fndecl_string_len_trim_char4;
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tree gfor_fndecl_string_index_char4;
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tree gfor_fndecl_string_scan_char4;
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tree gfor_fndecl_string_verify_char4;
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tree gfor_fndecl_string_trim_char4;
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tree gfor_fndecl_string_minmax_char4;
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tree gfor_fndecl_adjustl_char4;
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tree gfor_fndecl_adjustr_char4;
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tree gfor_fndecl_select_string_char4;
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/* Conversion between character kinds. */
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tree gfor_fndecl_convert_char1_to_char4;
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tree gfor_fndecl_convert_char4_to_char1;
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/* Other misc. runtime library functions. */
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tree gfor_fndecl_size0;
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tree gfor_fndecl_size1;
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tree gfor_fndecl_iargc;
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tree gfor_fndecl_clz128;
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tree gfor_fndecl_ctz128;
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/* Intrinsic functions implemented in Fortran. */
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tree gfor_fndecl_sc_kind;
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tree gfor_fndecl_si_kind;
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tree gfor_fndecl_sr_kind;
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/* BLAS gemm functions. */
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tree gfor_fndecl_sgemm;
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tree gfor_fndecl_dgemm;
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tree gfor_fndecl_cgemm;
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tree gfor_fndecl_zgemm;
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static void
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gfc_add_decl_to_parent_function (tree decl)
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{
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gcc_assert (decl);
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DECL_CONTEXT (decl) = DECL_CONTEXT (current_function_decl);
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DECL_NONLOCAL (decl) = 1;
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TREE_CHAIN (decl) = saved_parent_function_decls;
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saved_parent_function_decls = decl;
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}
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void
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gfc_add_decl_to_function (tree decl)
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{
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gcc_assert (decl);
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TREE_USED (decl) = 1;
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DECL_CONTEXT (decl) = current_function_decl;
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TREE_CHAIN (decl) = saved_function_decls;
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saved_function_decls = decl;
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}
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static void
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add_decl_as_local (tree decl)
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{
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gcc_assert (decl);
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TREE_USED (decl) = 1;
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DECL_CONTEXT (decl) = current_function_decl;
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TREE_CHAIN (decl) = saved_local_decls;
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saved_local_decls = decl;
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}
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/* Build a backend label declaration. Set TREE_USED for named labels.
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The context of the label is always the current_function_decl. All
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labels are marked artificial. */
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tree
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gfc_build_label_decl (tree label_id)
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{
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/* 2^32 temporaries should be enough. */
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static unsigned int tmp_num = 1;
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tree label_decl;
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char *label_name;
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if (label_id == NULL_TREE)
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{
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/* Build an internal label name. */
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ASM_FORMAT_PRIVATE_NAME (label_name, "L", tmp_num++);
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label_id = get_identifier (label_name);
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}
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else
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label_name = NULL;
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/* Build the LABEL_DECL node. Labels have no type. */
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label_decl = build_decl (input_location,
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LABEL_DECL, label_id, void_type_node);
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DECL_CONTEXT (label_decl) = current_function_decl;
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DECL_MODE (label_decl) = VOIDmode;
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/* We always define the label as used, even if the original source
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file never references the label. We don't want all kinds of
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spurious warnings for old-style Fortran code with too many
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labels. */
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TREE_USED (label_decl) = 1;
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DECL_ARTIFICIAL (label_decl) = 1;
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return label_decl;
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}
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/* Returns the return label for the current function. */
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tree
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gfc_get_return_label (void)
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{
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char name[GFC_MAX_SYMBOL_LEN + 10];
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if (current_function_return_label)
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return current_function_return_label;
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sprintf (name, "__return_%s",
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IDENTIFIER_POINTER (DECL_NAME (current_function_decl)));
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current_function_return_label =
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gfc_build_label_decl (get_identifier (name));
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DECL_ARTIFICIAL (current_function_return_label) = 1;
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return current_function_return_label;
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}
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/* Set the backend source location of a decl. */
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void
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gfc_set_decl_location (tree decl, locus * loc)
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{
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DECL_SOURCE_LOCATION (decl) = loc->lb->location;
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}
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/* Return the backend label declaration for a given label structure,
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or create it if it doesn't exist yet. */
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tree
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gfc_get_label_decl (gfc_st_label * lp)
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{
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if (lp->backend_decl)
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return lp->backend_decl;
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else
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{
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char label_name[GFC_MAX_SYMBOL_LEN + 1];
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tree label_decl;
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/* Validate the label declaration from the front end. */
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gcc_assert (lp != NULL && lp->value <= MAX_LABEL_VALUE);
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/* Build a mangled name for the label. */
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sprintf (label_name, "__label_%.6d", lp->value);
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/* Build the LABEL_DECL node. */
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label_decl = gfc_build_label_decl (get_identifier (label_name));
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/* Tell the debugger where the label came from. */
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if (lp->value <= MAX_LABEL_VALUE) /* An internal label. */
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gfc_set_decl_location (label_decl, &lp->where);
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else
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DECL_ARTIFICIAL (label_decl) = 1;
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/* Store the label in the label list and return the LABEL_DECL. */
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lp->backend_decl = label_decl;
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return label_decl;
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}
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}
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/* Convert a gfc_symbol to an identifier of the same name. */
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static tree
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gfc_sym_identifier (gfc_symbol * sym)
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{
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if (sym->attr.is_main_program && strcmp (sym->name, "main") == 0)
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return (get_identifier ("MAIN__"));
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else
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return (get_identifier (sym->name));
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}
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/* Construct mangled name from symbol name. */
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static tree
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gfc_sym_mangled_identifier (gfc_symbol * sym)
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{
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char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1];
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/* Prevent the mangling of identifiers that have an assigned
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binding label (mainly those that are bind(c)). */
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if (sym->attr.is_bind_c == 1
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&& sym->binding_label[0] != '\0')
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return get_identifier(sym->binding_label);
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if (sym->module == NULL)
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return gfc_sym_identifier (sym);
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else
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{
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snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name);
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return get_identifier (name);
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}
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}
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/* Construct mangled function name from symbol name. */
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static tree
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gfc_sym_mangled_function_id (gfc_symbol * sym)
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{
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int has_underscore;
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char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1];
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/* It may be possible to simply use the binding label if it's
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provided, and remove the other checks. Then we could use it
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for other things if we wished. */
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if ((sym->attr.is_bind_c == 1 || sym->attr.is_iso_c == 1) &&
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sym->binding_label[0] != '\0')
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/* use the binding label rather than the mangled name */
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return get_identifier (sym->binding_label);
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if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL
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|| (sym->module != NULL && (sym->attr.external
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|| sym->attr.if_source == IFSRC_IFBODY)))
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{
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/* Main program is mangled into MAIN__. */
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if (sym->attr.is_main_program)
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return get_identifier ("MAIN__");
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/* Intrinsic procedures are never mangled. */
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if (sym->attr.proc == PROC_INTRINSIC)
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return get_identifier (sym->name);
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if (gfc_option.flag_underscoring)
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{
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has_underscore = strchr (sym->name, '_') != 0;
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if (gfc_option.flag_second_underscore && has_underscore)
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snprintf (name, sizeof name, "%s__", sym->name);
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else
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snprintf (name, sizeof name, "%s_", sym->name);
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return get_identifier (name);
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}
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else
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return get_identifier (sym->name);
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}
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else
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{
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snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name);
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return get_identifier (name);
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}
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}
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void
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gfc_set_decl_assembler_name (tree decl, tree name)
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{
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tree target_mangled = targetm.mangle_decl_assembler_name (decl, name);
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SET_DECL_ASSEMBLER_NAME (decl, target_mangled);
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}
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/* Returns true if a variable of specified size should go on the stack. */
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int
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gfc_can_put_var_on_stack (tree size)
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{
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unsigned HOST_WIDE_INT low;
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if (!INTEGER_CST_P (size))
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return 0;
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if (gfc_option.flag_max_stack_var_size < 0)
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return 1;
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if (TREE_INT_CST_HIGH (size) != 0)
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return 0;
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low = TREE_INT_CST_LOW (size);
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if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size)
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return 0;
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/* TODO: Set a per-function stack size limit. */
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return 1;
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}
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/* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to
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an expression involving its corresponding pointer. There are
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2 cases; one for variable size arrays, and one for everything else,
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because variable-sized arrays require one fewer level of
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indirection. */
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static void
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gfc_finish_cray_pointee (tree decl, gfc_symbol *sym)
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{
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tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer);
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tree value;
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/* Parameters need to be dereferenced. */
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if (sym->cp_pointer->attr.dummy)
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ptr_decl = build_fold_indirect_ref_loc (input_location,
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ptr_decl);
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/* Check to see if we're dealing with a variable-sized array. */
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if (sym->attr.dimension
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&& TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE)
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{
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/* These decls will be dereferenced later, so we don't dereference
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them here. */
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value = convert (TREE_TYPE (decl), ptr_decl);
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}
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else
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{
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ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)),
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ptr_decl);
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value = build_fold_indirect_ref_loc (input_location,
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ptr_decl);
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}
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SET_DECL_VALUE_EXPR (decl, value);
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DECL_HAS_VALUE_EXPR_P (decl) = 1;
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GFC_DECL_CRAY_POINTEE (decl) = 1;
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/* This is a fake variable just for debugging purposes. */
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TREE_ASM_WRITTEN (decl) = 1;
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}
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/* Finish processing of a declaration without an initial value. */
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static void
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gfc_finish_decl (tree decl)
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{
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gcc_assert (TREE_CODE (decl) == PARM_DECL
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|| DECL_INITIAL (decl) == NULL_TREE);
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if (TREE_CODE (decl) != VAR_DECL)
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return;
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if (DECL_SIZE (decl) == NULL_TREE
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&& TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE)
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layout_decl (decl, 0);
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/* A few consistency checks. */
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/* A static variable with an incomplete type is an error if it is
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initialized. Also if it is not file scope. Otherwise, let it
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through, but if it is not `extern' then it may cause an error
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message later. */
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/* An automatic variable with an incomplete type is an error. */
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/* We should know the storage size. */
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gcc_assert (DECL_SIZE (decl) != NULL_TREE
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|| (TREE_STATIC (decl)
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? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl))
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: DECL_EXTERNAL (decl)));
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/* The storage size should be constant. */
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gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl))
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|| !DECL_SIZE (decl)
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|| TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST);
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}
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/* Apply symbol attributes to a variable, and add it to the function scope. */
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static void
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gfc_finish_var_decl (tree decl, gfc_symbol * sym)
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{
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tree new_type;
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/* TREE_ADDRESSABLE means the address of this variable is actually needed.
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This is the equivalent of the TARGET variables.
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We also need to set this if the variable is passed by reference in a
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CALL statement. */
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/* Set DECL_VALUE_EXPR for Cray Pointees. */
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if (sym->attr.cray_pointee)
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gfc_finish_cray_pointee (decl, sym);
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if (sym->attr.target)
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TREE_ADDRESSABLE (decl) = 1;
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/* If it wasn't used we wouldn't be getting it. */
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TREE_USED (decl) = 1;
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/* Chain this decl to the pending declarations. Don't do pushdecl()
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because this would add them to the current scope rather than the
|
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function scope. */
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if (current_function_decl != NULL_TREE)
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{
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if (sym->ns->proc_name->backend_decl == current_function_decl
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|| sym->result == sym)
|
|
gfc_add_decl_to_function (decl);
|
|
else if (sym->ns->proc_name->attr.flavor == FL_LABEL)
|
|
/* This is a BLOCK construct. */
|
|
add_decl_as_local (decl);
|
|
else
|
|
gfc_add_decl_to_parent_function (decl);
|
|
}
|
|
|
|
if (sym->attr.cray_pointee)
|
|
return;
|
|
|
|
if(sym->attr.is_bind_c == 1)
|
|
{
|
|
/* We need to put variables that are bind(c) into the common
|
|
segment of the object file, because this is what C would do.
|
|
gfortran would typically put them in either the BSS or
|
|
initialized data segments, and only mark them as common if
|
|
they were part of common blocks. However, if they are not put
|
|
into common space, then C cannot initialize global Fortran
|
|
variables that it interoperates with and the draft says that
|
|
either Fortran or C should be able to initialize it (but not
|
|
both, of course.) (J3/04-007, section 15.3). */
|
|
TREE_PUBLIC(decl) = 1;
|
|
DECL_COMMON(decl) = 1;
|
|
}
|
|
|
|
/* If a variable is USE associated, it's always external. */
|
|
if (sym->attr.use_assoc)
|
|
{
|
|
DECL_EXTERNAL (decl) = 1;
|
|
TREE_PUBLIC (decl) = 1;
|
|
}
|
|
else if (sym->module && !sym->attr.result && !sym->attr.dummy)
|
|
{
|
|
/* TODO: Don't set sym->module for result or dummy variables. */
|
|
gcc_assert (current_function_decl == NULL_TREE || sym->result == sym);
|
|
/* This is the declaration of a module variable. */
|
|
TREE_PUBLIC (decl) = 1;
|
|
TREE_STATIC (decl) = 1;
|
|
}
|
|
|
|
/* Derived types are a bit peculiar because of the possibility of
|
|
a default initializer; this must be applied each time the variable
|
|
comes into scope it therefore need not be static. These variables
|
|
are SAVE_NONE but have an initializer. Otherwise explicitly
|
|
initialized variables are SAVE_IMPLICIT and explicitly saved are
|
|
SAVE_EXPLICIT. */
|
|
if (!sym->attr.use_assoc
|
|
&& (sym->attr.save != SAVE_NONE || sym->attr.data
|
|
|| (sym->value && sym->ns->proc_name->attr.is_main_program)))
|
|
TREE_STATIC (decl) = 1;
|
|
|
|
if (sym->attr.volatile_)
|
|
{
|
|
TREE_THIS_VOLATILE (decl) = 1;
|
|
new_type = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE);
|
|
TREE_TYPE (decl) = new_type;
|
|
}
|
|
|
|
/* Keep variables larger than max-stack-var-size off stack. */
|
|
if (!sym->ns->proc_name->attr.recursive
|
|
&& INTEGER_CST_P (DECL_SIZE_UNIT (decl))
|
|
&& !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl))
|
|
/* Put variable length auto array pointers always into stack. */
|
|
&& (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE
|
|
|| sym->attr.dimension == 0
|
|
|| sym->as->type != AS_EXPLICIT
|
|
|| sym->attr.pointer
|
|
|| sym->attr.allocatable)
|
|
&& !DECL_ARTIFICIAL (decl))
|
|
TREE_STATIC (decl) = 1;
|
|
|
|
/* Handle threadprivate variables. */
|
|
if (sym->attr.threadprivate
|
|
&& (TREE_STATIC (decl) || DECL_EXTERNAL (decl)))
|
|
DECL_TLS_MODEL (decl) = decl_default_tls_model (decl);
|
|
|
|
if (!sym->attr.target
|
|
&& !sym->attr.pointer
|
|
&& !sym->attr.cray_pointee
|
|
&& !sym->attr.proc_pointer)
|
|
DECL_RESTRICTED_P (decl) = 1;
|
|
}
|
|
|
|
|
|
/* Allocate the lang-specific part of a decl. */
|
|
|
|
void
|
|
gfc_allocate_lang_decl (tree decl)
|
|
{
|
|
DECL_LANG_SPECIFIC (decl) = (struct lang_decl *)
|
|
ggc_alloc_cleared (sizeof (struct lang_decl));
|
|
}
|
|
|
|
/* Remember a symbol to generate initialization/cleanup code at function
|
|
entry/exit. */
|
|
|
|
static void
|
|
gfc_defer_symbol_init (gfc_symbol * sym)
|
|
{
|
|
gfc_symbol *p;
|
|
gfc_symbol *last;
|
|
gfc_symbol *head;
|
|
|
|
/* Don't add a symbol twice. */
|
|
if (sym->tlink)
|
|
return;
|
|
|
|
last = head = sym->ns->proc_name;
|
|
p = last->tlink;
|
|
|
|
/* Make sure that setup code for dummy variables which are used in the
|
|
setup of other variables is generated first. */
|
|
if (sym->attr.dummy)
|
|
{
|
|
/* Find the first dummy arg seen after us, or the first non-dummy arg.
|
|
This is a circular list, so don't go past the head. */
|
|
while (p != head
|
|
&& (!p->attr.dummy || p->dummy_order > sym->dummy_order))
|
|
{
|
|
last = p;
|
|
p = p->tlink;
|
|
}
|
|
}
|
|
/* Insert in between last and p. */
|
|
last->tlink = sym;
|
|
sym->tlink = p;
|
|
}
|
|
|
|
|
|
/* Create an array index type variable with function scope. */
|
|
|
|
static tree
|
|
create_index_var (const char * pfx, int nest)
|
|
{
|
|
tree decl;
|
|
|
|
decl = gfc_create_var_np (gfc_array_index_type, pfx);
|
|
if (nest)
|
|
gfc_add_decl_to_parent_function (decl);
|
|
else
|
|
gfc_add_decl_to_function (decl);
|
|
return decl;
|
|
}
|
|
|
|
|
|
/* Create variables to hold all the non-constant bits of info for a
|
|
descriptorless array. Remember these in the lang-specific part of the
|
|
type. */
|
|
|
|
static void
|
|
gfc_build_qualified_array (tree decl, gfc_symbol * sym)
|
|
{
|
|
tree type;
|
|
int dim;
|
|
int nest;
|
|
|
|
type = TREE_TYPE (decl);
|
|
|
|
/* We just use the descriptor, if there is one. */
|
|
if (GFC_DESCRIPTOR_TYPE_P (type))
|
|
return;
|
|
|
|
gcc_assert (GFC_ARRAY_TYPE_P (type));
|
|
nest = (sym->ns->proc_name->backend_decl != current_function_decl)
|
|
&& !sym->attr.contained;
|
|
|
|
for (dim = 0; dim < GFC_TYPE_ARRAY_RANK (type); dim++)
|
|
{
|
|
if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE)
|
|
{
|
|
GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest);
|
|
TREE_NO_WARNING (GFC_TYPE_ARRAY_LBOUND (type, dim)) = 1;
|
|
}
|
|
/* Don't try to use the unknown bound for assumed shape arrays. */
|
|
if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE
|
|
&& (sym->as->type != AS_ASSUMED_SIZE
|
|
|| dim < GFC_TYPE_ARRAY_RANK (type) - 1))
|
|
{
|
|
GFC_TYPE_ARRAY_UBOUND (type, dim) = create_index_var ("ubound", nest);
|
|
TREE_NO_WARNING (GFC_TYPE_ARRAY_UBOUND (type, dim)) = 1;
|
|
}
|
|
|
|
if (GFC_TYPE_ARRAY_STRIDE (type, dim) == NULL_TREE)
|
|
{
|
|
GFC_TYPE_ARRAY_STRIDE (type, dim) = create_index_var ("stride", nest);
|
|
TREE_NO_WARNING (GFC_TYPE_ARRAY_STRIDE (type, dim)) = 1;
|
|
}
|
|
}
|
|
if (GFC_TYPE_ARRAY_OFFSET (type) == NULL_TREE)
|
|
{
|
|
GFC_TYPE_ARRAY_OFFSET (type) = gfc_create_var_np (gfc_array_index_type,
|
|
"offset");
|
|
TREE_NO_WARNING (GFC_TYPE_ARRAY_OFFSET (type)) = 1;
|
|
|
|
if (nest)
|
|
gfc_add_decl_to_parent_function (GFC_TYPE_ARRAY_OFFSET (type));
|
|
else
|
|
gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type));
|
|
}
|
|
|
|
if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE
|
|
&& sym->as->type != AS_ASSUMED_SIZE)
|
|
{
|
|
GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest);
|
|
TREE_NO_WARNING (GFC_TYPE_ARRAY_SIZE (type)) = 1;
|
|
}
|
|
|
|
if (POINTER_TYPE_P (type))
|
|
{
|
|
gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type)));
|
|
gcc_assert (TYPE_LANG_SPECIFIC (type)
|
|
== TYPE_LANG_SPECIFIC (TREE_TYPE (type)));
|
|
type = TREE_TYPE (type);
|
|
}
|
|
|
|
if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type))
|
|
{
|
|
tree size, range;
|
|
|
|
size = fold_build2 (MINUS_EXPR, gfc_array_index_type,
|
|
GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node);
|
|
range = build_range_type (gfc_array_index_type, gfc_index_zero_node,
|
|
size);
|
|
TYPE_DOMAIN (type) = range;
|
|
layout_type (type);
|
|
}
|
|
|
|
if (TYPE_NAME (type) != NULL_TREE
|
|
&& GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1) != NULL_TREE
|
|
&& TREE_CODE (GFC_TYPE_ARRAY_UBOUND (type, sym->as->rank - 1)) == VAR_DECL)
|
|
{
|
|
tree gtype = DECL_ORIGINAL_TYPE (TYPE_NAME (type));
|
|
|
|
for (dim = 0; dim < sym->as->rank - 1; dim++)
|
|
{
|
|
gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE);
|
|
gtype = TREE_TYPE (gtype);
|
|
}
|
|
gcc_assert (TREE_CODE (gtype) == ARRAY_TYPE);
|
|
if (TYPE_MAX_VALUE (TYPE_DOMAIN (gtype)) == NULL)
|
|
TYPE_NAME (type) = NULL_TREE;
|
|
}
|
|
|
|
if (TYPE_NAME (type) == NULL_TREE)
|
|
{
|
|
tree gtype = TREE_TYPE (type), rtype, type_decl;
|
|
|
|
for (dim = sym->as->rank - 1; dim >= 0; dim--)
|
|
{
|
|
tree lbound, ubound;
|
|
lbound = GFC_TYPE_ARRAY_LBOUND (type, dim);
|
|
ubound = GFC_TYPE_ARRAY_UBOUND (type, dim);
|
|
rtype = build_range_type (gfc_array_index_type, lbound, ubound);
|
|
gtype = build_array_type (gtype, rtype);
|
|
/* Ensure the bound variables aren't optimized out at -O0.
|
|
For -O1 and above they often will be optimized out, but
|
|
can be tracked by VTA. Also clear the artificial
|
|
lbound.N or ubound.N DECL_NAME, so that it doesn't end up
|
|
in debug info. */
|
|
if (lbound && TREE_CODE (lbound) == VAR_DECL
|
|
&& DECL_ARTIFICIAL (lbound) && DECL_IGNORED_P (lbound))
|
|
{
|
|
if (DECL_NAME (lbound)
|
|
&& strstr (IDENTIFIER_POINTER (DECL_NAME (lbound)),
|
|
"lbound") != 0)
|
|
DECL_NAME (lbound) = NULL_TREE;
|
|
DECL_IGNORED_P (lbound) = 0;
|
|
}
|
|
if (ubound && TREE_CODE (ubound) == VAR_DECL
|
|
&& DECL_ARTIFICIAL (ubound) && DECL_IGNORED_P (ubound))
|
|
{
|
|
if (DECL_NAME (ubound)
|
|
&& strstr (IDENTIFIER_POINTER (DECL_NAME (ubound)),
|
|
"ubound") != 0)
|
|
DECL_NAME (ubound) = NULL_TREE;
|
|
DECL_IGNORED_P (ubound) = 0;
|
|
}
|
|
}
|
|
TYPE_NAME (type) = type_decl = build_decl (input_location,
|
|
TYPE_DECL, NULL, gtype);
|
|
DECL_ORIGINAL_TYPE (type_decl) = gtype;
|
|
}
|
|
}
|
|
|
|
|
|
/* For some dummy arguments we don't use the actual argument directly.
|
|
Instead we create a local decl and use that. This allows us to perform
|
|
initialization, and construct full type information. */
|
|
|
|
static tree
|
|
gfc_build_dummy_array_decl (gfc_symbol * sym, tree dummy)
|
|
{
|
|
tree decl;
|
|
tree type;
|
|
gfc_array_spec *as;
|
|
char *name;
|
|
gfc_packed packed;
|
|
int n;
|
|
bool known_size;
|
|
|
|
if (sym->attr.pointer || sym->attr.allocatable)
|
|
return dummy;
|
|
|
|
/* Add to list of variables if not a fake result variable. */
|
|
if (sym->attr.result || sym->attr.dummy)
|
|
gfc_defer_symbol_init (sym);
|
|
|
|
type = TREE_TYPE (dummy);
|
|
gcc_assert (TREE_CODE (dummy) == PARM_DECL
|
|
&& POINTER_TYPE_P (type));
|
|
|
|
/* Do we know the element size? */
|
|
known_size = sym->ts.type != BT_CHARACTER
|
|
|| INTEGER_CST_P (sym->ts.u.cl->backend_decl);
|
|
|
|
if (known_size && !GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (type)))
|
|
{
|
|
/* For descriptorless arrays with known element size the actual
|
|
argument is sufficient. */
|
|
gcc_assert (GFC_ARRAY_TYPE_P (type));
|
|
gfc_build_qualified_array (dummy, sym);
|
|
return dummy;
|
|
}
|
|
|
|
type = TREE_TYPE (type);
|
|
if (GFC_DESCRIPTOR_TYPE_P (type))
|
|
{
|
|
/* Create a descriptorless array pointer. */
|
|
as = sym->as;
|
|
packed = PACKED_NO;
|
|
|
|
/* Even when -frepack-arrays is used, symbols with TARGET attribute
|
|
are not repacked. */
|
|
if (!gfc_option.flag_repack_arrays || sym->attr.target)
|
|
{
|
|
if (as->type == AS_ASSUMED_SIZE)
|
|
packed = PACKED_FULL;
|
|
}
|
|
else
|
|
{
|
|
if (as->type == AS_EXPLICIT)
|
|
{
|
|
packed = PACKED_FULL;
|
|
for (n = 0; n < as->rank; n++)
|
|
{
|
|
if (!(as->upper[n]
|
|
&& as->lower[n]
|
|
&& as->upper[n]->expr_type == EXPR_CONSTANT
|
|
&& as->lower[n]->expr_type == EXPR_CONSTANT))
|
|
packed = PACKED_PARTIAL;
|
|
}
|
|
}
|
|
else
|
|
packed = PACKED_PARTIAL;
|
|
}
|
|
|
|
type = gfc_typenode_for_spec (&sym->ts);
|
|
type = gfc_get_nodesc_array_type (type, sym->as, packed,
|
|
!sym->attr.target);
|
|
}
|
|
else
|
|
{
|
|
/* We now have an expression for the element size, so create a fully
|
|
qualified type. Reset sym->backend decl or this will just return the
|
|
old type. */
|
|
DECL_ARTIFICIAL (sym->backend_decl) = 1;
|
|
sym->backend_decl = NULL_TREE;
|
|
type = gfc_sym_type (sym);
|
|
packed = PACKED_FULL;
|
|
}
|
|
|
|
ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0);
|
|
decl = build_decl (input_location,
|
|
VAR_DECL, get_identifier (name), type);
|
|
|
|
DECL_ARTIFICIAL (decl) = 1;
|
|
TREE_PUBLIC (decl) = 0;
|
|
TREE_STATIC (decl) = 0;
|
|
DECL_EXTERNAL (decl) = 0;
|
|
|
|
/* We should never get deferred shape arrays here. We used to because of
|
|
frontend bugs. */
|
|
gcc_assert (sym->as->type != AS_DEFERRED);
|
|
|
|
if (packed == PACKED_PARTIAL)
|
|
GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1;
|
|
else if (packed == PACKED_FULL)
|
|
GFC_DECL_PACKED_ARRAY (decl) = 1;
|
|
|
|
gfc_build_qualified_array (decl, sym);
|
|
|
|
if (DECL_LANG_SPECIFIC (dummy))
|
|
DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (dummy);
|
|
else
|
|
gfc_allocate_lang_decl (decl);
|
|
|
|
GFC_DECL_SAVED_DESCRIPTOR (decl) = dummy;
|
|
|
|
if (sym->ns->proc_name->backend_decl == current_function_decl
|
|
|| sym->attr.contained)
|
|
gfc_add_decl_to_function (decl);
|
|
else
|
|
gfc_add_decl_to_parent_function (decl);
|
|
|
|
return decl;
|
|
}
|
|
|
|
/* For symbol SYM with GFC_DECL_SAVED_DESCRIPTOR used in contained
|
|
function add a VAR_DECL to the current function with DECL_VALUE_EXPR
|
|
pointing to the artificial variable for debug info purposes. */
|
|
|
|
static void
|
|
gfc_nonlocal_dummy_array_decl (gfc_symbol *sym)
|
|
{
|
|
tree decl, dummy;
|
|
|
|
if (! nonlocal_dummy_decl_pset)
|
|
nonlocal_dummy_decl_pset = pointer_set_create ();
|
|
|
|
if (pointer_set_insert (nonlocal_dummy_decl_pset, sym->backend_decl))
|
|
return;
|
|
|
|
dummy = GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl);
|
|
decl = build_decl (input_location, VAR_DECL, DECL_NAME (dummy),
|
|
TREE_TYPE (sym->backend_decl));
|
|
DECL_ARTIFICIAL (decl) = 0;
|
|
TREE_USED (decl) = 1;
|
|
TREE_PUBLIC (decl) = 0;
|
|
TREE_STATIC (decl) = 0;
|
|
DECL_EXTERNAL (decl) = 0;
|
|
if (DECL_BY_REFERENCE (dummy))
|
|
DECL_BY_REFERENCE (decl) = 1;
|
|
DECL_LANG_SPECIFIC (decl) = DECL_LANG_SPECIFIC (sym->backend_decl);
|
|
SET_DECL_VALUE_EXPR (decl, sym->backend_decl);
|
|
DECL_HAS_VALUE_EXPR_P (decl) = 1;
|
|
DECL_CONTEXT (decl) = DECL_CONTEXT (sym->backend_decl);
|
|
TREE_CHAIN (decl) = nonlocal_dummy_decls;
|
|
nonlocal_dummy_decls = decl;
|
|
}
|
|
|
|
/* Return a constant or a variable to use as a string length. Does not
|
|
add the decl to the current scope. */
|
|
|
|
static tree
|
|
gfc_create_string_length (gfc_symbol * sym)
|
|
{
|
|
gcc_assert (sym->ts.u.cl);
|
|
gfc_conv_const_charlen (sym->ts.u.cl);
|
|
|
|
if (sym->ts.u.cl->backend_decl == NULL_TREE)
|
|
{
|
|
tree length;
|
|
char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2];
|
|
|
|
/* Also prefix the mangled name. */
|
|
strcpy (&name[1], sym->name);
|
|
name[0] = '.';
|
|
length = build_decl (input_location,
|
|
VAR_DECL, get_identifier (name),
|
|
gfc_charlen_type_node);
|
|
DECL_ARTIFICIAL (length) = 1;
|
|
TREE_USED (length) = 1;
|
|
if (sym->ns->proc_name->tlink != NULL)
|
|
gfc_defer_symbol_init (sym);
|
|
|
|
sym->ts.u.cl->backend_decl = length;
|
|
}
|
|
|
|
gcc_assert (sym->ts.u.cl->backend_decl != NULL_TREE);
|
|
return sym->ts.u.cl->backend_decl;
|
|
}
|
|
|
|
/* If a variable is assigned a label, we add another two auxiliary
|
|
variables. */
|
|
|
|
static void
|
|
gfc_add_assign_aux_vars (gfc_symbol * sym)
|
|
{
|
|
tree addr;
|
|
tree length;
|
|
tree decl;
|
|
|
|
gcc_assert (sym->backend_decl);
|
|
|
|
decl = sym->backend_decl;
|
|
gfc_allocate_lang_decl (decl);
|
|
GFC_DECL_ASSIGN (decl) = 1;
|
|
length = build_decl (input_location,
|
|
VAR_DECL, create_tmp_var_name (sym->name),
|
|
gfc_charlen_type_node);
|
|
addr = build_decl (input_location,
|
|
VAR_DECL, create_tmp_var_name (sym->name),
|
|
pvoid_type_node);
|
|
gfc_finish_var_decl (length, sym);
|
|
gfc_finish_var_decl (addr, sym);
|
|
/* STRING_LENGTH is also used as flag. Less than -1 means that
|
|
ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the
|
|
target label's address. Otherwise, value is the length of a format string
|
|
and ASSIGN_ADDR is its address. */
|
|
if (TREE_STATIC (length))
|
|
DECL_INITIAL (length) = build_int_cst (NULL_TREE, -2);
|
|
else
|
|
gfc_defer_symbol_init (sym);
|
|
|
|
GFC_DECL_STRING_LEN (decl) = length;
|
|
GFC_DECL_ASSIGN_ADDR (decl) = addr;
|
|
}
|
|
|
|
|
|
static tree
|
|
add_attributes_to_decl (symbol_attribute sym_attr, tree list)
|
|
{
|
|
unsigned id;
|
|
tree attr;
|
|
|
|
for (id = 0; id < EXT_ATTR_NUM; id++)
|
|
if (sym_attr.ext_attr & (1 << id))
|
|
{
|
|
attr = build_tree_list (
|
|
get_identifier (ext_attr_list[id].middle_end_name),
|
|
NULL_TREE);
|
|
list = chainon (list, attr);
|
|
}
|
|
|
|
return list;
|
|
}
|
|
|
|
|
|
/* Return the decl for a gfc_symbol, create it if it doesn't already
|
|
exist. */
|
|
|
|
tree
|
|
gfc_get_symbol_decl (gfc_symbol * sym)
|
|
{
|
|
tree decl;
|
|
tree length = NULL_TREE;
|
|
tree attributes;
|
|
int byref;
|
|
|
|
gcc_assert (sym->attr.referenced
|
|
|| sym->attr.use_assoc
|
|
|| sym->ns->proc_name->attr.if_source == IFSRC_IFBODY);
|
|
|
|
if (sym->ns && sym->ns->proc_name && sym->ns->proc_name->attr.function)
|
|
byref = gfc_return_by_reference (sym->ns->proc_name);
|
|
else
|
|
byref = 0;
|
|
|
|
/* Make sure that the vtab for the declared type is completed. */
|
|
if (sym->ts.type == BT_CLASS)
|
|
{
|
|
gfc_component *c = gfc_find_component (sym->ts.u.derived,
|
|
"$data", true, true);
|
|
if (!c->ts.u.derived->backend_decl)
|
|
gfc_find_derived_vtab (c->ts.u.derived, true);
|
|
}
|
|
|
|
if ((sym->attr.dummy && ! sym->attr.function) || (sym->attr.result && byref))
|
|
{
|
|
/* Return via extra parameter. */
|
|
if (sym->attr.result && byref
|
|
&& !sym->backend_decl)
|
|
{
|
|
sym->backend_decl =
|
|
DECL_ARGUMENTS (sym->ns->proc_name->backend_decl);
|
|
/* For entry master function skip over the __entry
|
|
argument. */
|
|
if (sym->ns->proc_name->attr.entry_master)
|
|
sym->backend_decl = TREE_CHAIN (sym->backend_decl);
|
|
}
|
|
|
|
/* Dummy variables should already have been created. */
|
|
gcc_assert (sym->backend_decl);
|
|
|
|
/* Create a character length variable. */
|
|
if (sym->ts.type == BT_CHARACTER)
|
|
{
|
|
if (sym->ts.u.cl->backend_decl == NULL_TREE)
|
|
length = gfc_create_string_length (sym);
|
|
else
|
|
length = sym->ts.u.cl->backend_decl;
|
|
if (TREE_CODE (length) == VAR_DECL
|
|
&& DECL_CONTEXT (length) == NULL_TREE)
|
|
{
|
|
/* Add the string length to the same context as the symbol. */
|
|
if (DECL_CONTEXT (sym->backend_decl) == current_function_decl)
|
|
gfc_add_decl_to_function (length);
|
|
else
|
|
gfc_add_decl_to_parent_function (length);
|
|
|
|
gcc_assert (DECL_CONTEXT (sym->backend_decl) ==
|
|
DECL_CONTEXT (length));
|
|
|
|
gfc_defer_symbol_init (sym);
|
|
}
|
|
}
|
|
|
|
/* Use a copy of the descriptor for dummy arrays. */
|
|
if (sym->attr.dimension && !TREE_USED (sym->backend_decl))
|
|
{
|
|
decl = gfc_build_dummy_array_decl (sym, sym->backend_decl);
|
|
/* Prevent the dummy from being detected as unused if it is copied. */
|
|
if (sym->backend_decl != NULL && decl != sym->backend_decl)
|
|
DECL_ARTIFICIAL (sym->backend_decl) = 1;
|
|
sym->backend_decl = decl;
|
|
}
|
|
|
|
TREE_USED (sym->backend_decl) = 1;
|
|
if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0)
|
|
{
|
|
gfc_add_assign_aux_vars (sym);
|
|
}
|
|
|
|
if (sym->attr.dimension
|
|
&& DECL_LANG_SPECIFIC (sym->backend_decl)
|
|
&& GFC_DECL_SAVED_DESCRIPTOR (sym->backend_decl)
|
|
&& DECL_CONTEXT (sym->backend_decl) != current_function_decl)
|
|
gfc_nonlocal_dummy_array_decl (sym);
|
|
|
|
return sym->backend_decl;
|
|
}
|
|
|
|
if (sym->backend_decl)
|
|
return sym->backend_decl;
|
|
|
|
/* If use associated and whole file compilation, use the module
|
|
declaration. This is only needed for intrinsic types because
|
|
they are substituted for one another during optimization. */
|
|
if (gfc_option.flag_whole_file
|
|
&& sym->attr.flavor == FL_VARIABLE
|
|
&& sym->ts.type != BT_DERIVED
|
|
&& sym->attr.use_assoc
|
|
&& sym->module)
|
|
{
|
|
gfc_gsymbol *gsym;
|
|
|
|
gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module);
|
|
if (gsym && gsym->ns && gsym->type == GSYM_MODULE)
|
|
{
|
|
gfc_symbol *s;
|
|
s = NULL;
|
|
gfc_find_symbol (sym->name, gsym->ns, 0, &s);
|
|
if (s && s->backend_decl)
|
|
{
|
|
if (sym->ts.type == BT_CHARACTER)
|
|
sym->ts.u.cl->backend_decl = s->ts.u.cl->backend_decl;
|
|
return s->backend_decl;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Catch function declarations. Only used for actual parameters and
|
|
procedure pointers. */
|
|
if (sym->attr.flavor == FL_PROCEDURE)
|
|
{
|
|
decl = gfc_get_extern_function_decl (sym);
|
|
gfc_set_decl_location (decl, &sym->declared_at);
|
|
return decl;
|
|
}
|
|
|
|
if (sym->attr.intrinsic)
|
|
internal_error ("intrinsic variable which isn't a procedure");
|
|
|
|
/* Create string length decl first so that they can be used in the
|
|
type declaration. */
|
|
if (sym->ts.type == BT_CHARACTER)
|
|
length = gfc_create_string_length (sym);
|
|
|
|
/* Create the decl for the variable. */
|
|
decl = build_decl (sym->declared_at.lb->location,
|
|
VAR_DECL, gfc_sym_identifier (sym), gfc_sym_type (sym));
|
|
|
|
/* Add attributes to variables. Functions are handled elsewhere. */
|
|
attributes = add_attributes_to_decl (sym->attr, NULL_TREE);
|
|
decl_attributes (&decl, attributes, 0);
|
|
|
|
/* Symbols from modules should have their assembler names mangled.
|
|
This is done here rather than in gfc_finish_var_decl because it
|
|
is different for string length variables. */
|
|
if (sym->module)
|
|
{
|
|
gfc_set_decl_assembler_name (decl, gfc_sym_mangled_identifier (sym));
|
|
if (sym->attr.use_assoc)
|
|
DECL_IGNORED_P (decl) = 1;
|
|
}
|
|
|
|
if (sym->attr.dimension)
|
|
{
|
|
/* Create variables to hold the non-constant bits of array info. */
|
|
gfc_build_qualified_array (decl, sym);
|
|
|
|
if ((sym->attr.allocatable || !sym->attr.dummy) && !sym->attr.pointer)
|
|
GFC_DECL_PACKED_ARRAY (decl) = 1;
|
|
}
|
|
|
|
/* Remember this variable for allocation/cleanup. */
|
|
if (sym->attr.dimension || sym->attr.allocatable
|
|
|| (sym->ts.type == BT_CLASS &&
|
|
(sym->ts.u.derived->components->attr.dimension
|
|
|| sym->ts.u.derived->components->attr.allocatable))
|
|
|| (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp)
|
|
/* This applies a derived type default initializer. */
|
|
|| (sym->ts.type == BT_DERIVED
|
|
&& sym->attr.save == SAVE_NONE
|
|
&& !sym->attr.data
|
|
&& !sym->attr.allocatable
|
|
&& (sym->value && !sym->ns->proc_name->attr.is_main_program)
|
|
&& !sym->attr.use_assoc))
|
|
gfc_defer_symbol_init (sym);
|
|
|
|
gfc_finish_var_decl (decl, sym);
|
|
|
|
if (sym->ts.type == BT_CHARACTER)
|
|
{
|
|
/* Character variables need special handling. */
|
|
gfc_allocate_lang_decl (decl);
|
|
|
|
if (TREE_CODE (length) != INTEGER_CST)
|
|
{
|
|
char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2];
|
|
|
|
if (sym->module)
|
|
{
|
|
/* Also prefix the mangled name for symbols from modules. */
|
|
strcpy (&name[1], sym->name);
|
|
name[0] = '.';
|
|
strcpy (&name[1],
|
|
IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (length)));
|
|
gfc_set_decl_assembler_name (decl, get_identifier (name));
|
|
}
|
|
gfc_finish_var_decl (length, sym);
|
|
gcc_assert (!sym->value);
|
|
}
|
|
}
|
|
else if (sym->attr.subref_array_pointer)
|
|
{
|
|
/* We need the span for these beasts. */
|
|
gfc_allocate_lang_decl (decl);
|
|
}
|
|
|
|
if (sym->attr.subref_array_pointer)
|
|
{
|
|
tree span;
|
|
GFC_DECL_SUBREF_ARRAY_P (decl) = 1;
|
|
span = build_decl (input_location,
|
|
VAR_DECL, create_tmp_var_name ("span"),
|
|
gfc_array_index_type);
|
|
gfc_finish_var_decl (span, sym);
|
|
TREE_STATIC (span) = TREE_STATIC (decl);
|
|
DECL_ARTIFICIAL (span) = 1;
|
|
DECL_INITIAL (span) = build_int_cst (gfc_array_index_type, 0);
|
|
|
|
GFC_DECL_SPAN (decl) = span;
|
|
GFC_TYPE_ARRAY_SPAN (TREE_TYPE (decl)) = span;
|
|
}
|
|
|
|
sym->backend_decl = decl;
|
|
|
|
if (sym->attr.assign)
|
|
gfc_add_assign_aux_vars (sym);
|
|
|
|
if (TREE_STATIC (decl) && !sym->attr.use_assoc
|
|
&& (sym->attr.save || sym->ns->proc_name->attr.is_main_program
|
|
|| gfc_option.flag_max_stack_var_size == 0
|
|
|| sym->attr.data || sym->ns->proc_name->attr.flavor == FL_MODULE))
|
|
{
|
|
/* Add static initializer. For procedures, it is only needed if
|
|
SAVE is specified otherwise they need to be reinitialized
|
|
every time the procedure is entered. The TREE_STATIC is
|
|
in this case due to -fmax-stack-var-size=. */
|
|
DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts,
|
|
TREE_TYPE (decl), sym->attr.dimension,
|
|
sym->attr.pointer || sym->attr.allocatable);
|
|
}
|
|
|
|
if (!TREE_STATIC (decl)
|
|
&& POINTER_TYPE_P (TREE_TYPE (decl))
|
|
&& !sym->attr.pointer
|
|
&& !sym->attr.allocatable
|
|
&& !sym->attr.proc_pointer)
|
|
DECL_BY_REFERENCE (decl) = 1;
|
|
|
|
return decl;
|
|
}
|
|
|
|
|
|
/* Substitute a temporary variable in place of the real one. */
|
|
|
|
void
|
|
gfc_shadow_sym (gfc_symbol * sym, tree decl, gfc_saved_var * save)
|
|
{
|
|
save->attr = sym->attr;
|
|
save->decl = sym->backend_decl;
|
|
|
|
gfc_clear_attr (&sym->attr);
|
|
sym->attr.referenced = 1;
|
|
sym->attr.flavor = FL_VARIABLE;
|
|
|
|
sym->backend_decl = decl;
|
|
}
|
|
|
|
|
|
/* Restore the original variable. */
|
|
|
|
void
|
|
gfc_restore_sym (gfc_symbol * sym, gfc_saved_var * save)
|
|
{
|
|
sym->attr = save->attr;
|
|
sym->backend_decl = save->decl;
|
|
}
|
|
|
|
|
|
/* Declare a procedure pointer. */
|
|
|
|
static tree
|
|
get_proc_pointer_decl (gfc_symbol *sym)
|
|
{
|
|
tree decl;
|
|
tree attributes;
|
|
|
|
decl = sym->backend_decl;
|
|
if (decl)
|
|
return decl;
|
|
|
|
decl = build_decl (input_location,
|
|
VAR_DECL, get_identifier (sym->name),
|
|
build_pointer_type (gfc_get_function_type (sym)));
|
|
|
|
if ((sym->ns->proc_name
|
|
&& sym->ns->proc_name->backend_decl == current_function_decl)
|
|
|| sym->attr.contained)
|
|
gfc_add_decl_to_function (decl);
|
|
else if (sym->ns->proc_name->attr.flavor != FL_MODULE)
|
|
gfc_add_decl_to_parent_function (decl);
|
|
|
|
sym->backend_decl = decl;
|
|
|
|
/* If a variable is USE associated, it's always external. */
|
|
if (sym->attr.use_assoc)
|
|
{
|
|
DECL_EXTERNAL (decl) = 1;
|
|
TREE_PUBLIC (decl) = 1;
|
|
}
|
|
else if (sym->module && sym->ns->proc_name->attr.flavor == FL_MODULE)
|
|
{
|
|
/* This is the declaration of a module variable. */
|
|
TREE_PUBLIC (decl) = 1;
|
|
TREE_STATIC (decl) = 1;
|
|
}
|
|
|
|
if (!sym->attr.use_assoc
|
|
&& (sym->attr.save != SAVE_NONE || sym->attr.data
|
|
|| (sym->value && sym->ns->proc_name->attr.is_main_program)))
|
|
TREE_STATIC (decl) = 1;
|
|
|
|
if (TREE_STATIC (decl) && sym->value)
|
|
{
|
|
/* Add static initializer. */
|
|
DECL_INITIAL (decl) = gfc_conv_initializer (sym->value, &sym->ts,
|
|
TREE_TYPE (decl),
|
|
sym->attr.proc_pointer ? false : sym->attr.dimension,
|
|
sym->attr.proc_pointer);
|
|
}
|
|
|
|
attributes = add_attributes_to_decl (sym->attr, NULL_TREE);
|
|
decl_attributes (&decl, attributes, 0);
|
|
|
|
return decl;
|
|
}
|
|
|
|
|
|
/* Get a basic decl for an external function. */
|
|
|
|
tree
|
|
gfc_get_extern_function_decl (gfc_symbol * sym)
|
|
{
|
|
tree type;
|
|
tree fndecl;
|
|
tree attributes;
|
|
gfc_expr e;
|
|
gfc_intrinsic_sym *isym;
|
|
gfc_expr argexpr;
|
|
char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */
|
|
tree name;
|
|
tree mangled_name;
|
|
gfc_gsymbol *gsym;
|
|
|
|
if (sym->backend_decl)
|
|
return sym->backend_decl;
|
|
|
|
/* We should never be creating external decls for alternate entry points.
|
|
The procedure may be an alternate entry point, but we don't want/need
|
|
to know that. */
|
|
gcc_assert (!(sym->attr.entry || sym->attr.entry_master));
|
|
|
|
if (sym->attr.proc_pointer)
|
|
return get_proc_pointer_decl (sym);
|
|
|
|
/* See if this is an external procedure from the same file. If so,
|
|
return the backend_decl. */
|
|
gsym = gfc_find_gsymbol (gfc_gsym_root, sym->name);
|
|
|
|
if (gfc_option.flag_whole_file
|
|
&& !sym->attr.use_assoc
|
|
&& !sym->backend_decl
|
|
&& gsym && gsym->ns
|
|
&& ((gsym->type == GSYM_SUBROUTINE) || (gsym->type == GSYM_FUNCTION))
|
|
&& gsym->ns->proc_name->backend_decl)
|
|
{
|
|
/* If the namespace has entries, the proc_name is the
|
|
entry master. Find the entry and use its backend_decl.
|
|
otherwise, use the proc_name backend_decl. */
|
|
if (gsym->ns->entries)
|
|
{
|
|
gfc_entry_list *entry = gsym->ns->entries;
|
|
|
|
for (; entry; entry = entry->next)
|
|
{
|
|
if (strcmp (gsym->name, entry->sym->name) == 0)
|
|
{
|
|
sym->backend_decl = entry->sym->backend_decl;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sym->backend_decl = gsym->ns->proc_name->backend_decl;
|
|
}
|
|
|
|
if (sym->backend_decl)
|
|
return sym->backend_decl;
|
|
}
|
|
|
|
/* See if this is a module procedure from the same file. If so,
|
|
return the backend_decl. */
|
|
if (sym->module)
|
|
gsym = gfc_find_gsymbol (gfc_gsym_root, sym->module);
|
|
|
|
if (gfc_option.flag_whole_file
|
|
&& gsym && gsym->ns
|
|
&& gsym->type == GSYM_MODULE)
|
|
{
|
|
gfc_symbol *s;
|
|
|
|
s = NULL;
|
|
gfc_find_symbol (sym->name, gsym->ns, 0, &s);
|
|
if (s && s->backend_decl)
|
|
{
|
|
sym->backend_decl = s->backend_decl;
|
|
return sym->backend_decl;
|
|
}
|
|
}
|
|
|
|
if (sym->attr.intrinsic)
|
|
{
|
|
/* Call the resolution function to get the actual name. This is
|
|
a nasty hack which relies on the resolution functions only looking
|
|
at the first argument. We pass NULL for the second argument
|
|
otherwise things like AINT get confused. */
|
|
isym = gfc_find_function (sym->name);
|
|
gcc_assert (isym->resolve.f0 != NULL);
|
|
|
|
memset (&e, 0, sizeof (e));
|
|
e.expr_type = EXPR_FUNCTION;
|
|
|
|
memset (&argexpr, 0, sizeof (argexpr));
|
|
gcc_assert (isym->formal);
|
|
argexpr.ts = isym->formal->ts;
|
|
|
|
if (isym->formal->next == NULL)
|
|
isym->resolve.f1 (&e, &argexpr);
|
|
else
|
|
{
|
|
if (isym->formal->next->next == NULL)
|
|
isym->resolve.f2 (&e, &argexpr, NULL);
|
|
else
|
|
{
|
|
if (isym->formal->next->next->next == NULL)
|
|
isym->resolve.f3 (&e, &argexpr, NULL, NULL);
|
|
else
|
|
{
|
|
/* All specific intrinsics take less than 5 arguments. */
|
|
gcc_assert (isym->formal->next->next->next->next == NULL);
|
|
isym->resolve.f4 (&e, &argexpr, NULL, NULL, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (gfc_option.flag_f2c
|
|
&& ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind)
|
|
|| e.ts.type == BT_COMPLEX))
|
|
{
|
|
/* Specific which needs a different implementation if f2c
|
|
calling conventions are used. */
|
|
sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name);
|
|
}
|
|
else
|
|
sprintf (s, "_gfortran_specific%s", e.value.function.name);
|
|
|
|
name = get_identifier (s);
|
|
mangled_name = name;
|
|
}
|
|
else
|
|
{
|
|
name = gfc_sym_identifier (sym);
|
|
mangled_name = gfc_sym_mangled_function_id (sym);
|
|
}
|
|
|
|
type = gfc_get_function_type (sym);
|
|
fndecl = build_decl (input_location,
|
|
FUNCTION_DECL, name, type);
|
|
|
|
attributes = add_attributes_to_decl (sym->attr, NULL_TREE);
|
|
decl_attributes (&fndecl, attributes, 0);
|
|
|
|
gfc_set_decl_assembler_name (fndecl, mangled_name);
|
|
|
|
/* Set the context of this decl. */
|
|
if (0 && sym->ns && sym->ns->proc_name)
|
|
{
|
|
/* TODO: Add external decls to the appropriate scope. */
|
|
DECL_CONTEXT (fndecl) = sym->ns->proc_name->backend_decl;
|
|
}
|
|
else
|
|
{
|
|
/* Global declaration, e.g. intrinsic subroutine. */
|
|
DECL_CONTEXT (fndecl) = NULL_TREE;
|
|
}
|
|
|
|
DECL_EXTERNAL (fndecl) = 1;
|
|
|
|
/* This specifies if a function is globally addressable, i.e. it is
|
|
the opposite of declaring static in C. */
|
|
TREE_PUBLIC (fndecl) = 1;
|
|
|
|
/* Set attributes for PURE functions. A call to PURE function in the
|
|
Fortran 95 sense is both pure and without side effects in the C
|
|
sense. */
|
|
if (sym->attr.pure || sym->attr.elemental)
|
|
{
|
|
if (sym->attr.function && !gfc_return_by_reference (sym))
|
|
DECL_PURE_P (fndecl) = 1;
|
|
/* TODO: check if pure SUBROUTINEs don't have INTENT(OUT)
|
|
parameters and don't use alternate returns (is this
|
|
allowed?). In that case, calls to them are meaningless, and
|
|
can be optimized away. See also in build_function_decl(). */
|
|
TREE_SIDE_EFFECTS (fndecl) = 0;
|
|
}
|
|
|
|
/* Mark non-returning functions. */
|
|
if (sym->attr.noreturn)
|
|
TREE_THIS_VOLATILE(fndecl) = 1;
|
|
|
|
sym->backend_decl = fndecl;
|
|
|
|
if (DECL_CONTEXT (fndecl) == NULL_TREE)
|
|
pushdecl_top_level (fndecl);
|
|
|
|
return fndecl;
|
|
}
|
|
|
|
|
|
/* Create a declaration for a procedure. For external functions (in the C
|
|
sense) use gfc_get_extern_function_decl. HAS_ENTRIES is true if this is
|
|
a master function with alternate entry points. */
|
|
|
|
static void
|
|
build_function_decl (gfc_symbol * sym)
|
|
{
|
|
tree fndecl, type, attributes;
|
|
symbol_attribute attr;
|
|
tree result_decl;
|
|
gfc_formal_arglist *f;
|
|
|
|
gcc_assert (!sym->backend_decl);
|
|
gcc_assert (!sym->attr.external);
|
|
|
|
/* Set the line and filename. sym->declared_at seems to point to the
|
|
last statement for subroutines, but it'll do for now. */
|
|
gfc_set_backend_locus (&sym->declared_at);
|
|
|
|
/* Allow only one nesting level. Allow public declarations. */
|
|
gcc_assert (current_function_decl == NULL_TREE
|
|
|| DECL_CONTEXT (current_function_decl) == NULL_TREE
|
|
|| TREE_CODE (DECL_CONTEXT (current_function_decl))
|
|
== NAMESPACE_DECL);
|
|
|
|
type = gfc_get_function_type (sym);
|
|
fndecl = build_decl (input_location,
|
|
FUNCTION_DECL, gfc_sym_identifier (sym), type);
|
|
|
|
attr = sym->attr;
|
|
|
|
attributes = add_attributes_to_decl (attr, NULL_TREE);
|
|
decl_attributes (&fndecl, attributes, 0);
|
|
|
|
/* Perform name mangling if this is a top level or module procedure. */
|
|
if (current_function_decl == NULL_TREE)
|
|
gfc_set_decl_assembler_name (fndecl, gfc_sym_mangled_function_id (sym));
|
|
|
|
/* Figure out the return type of the declared function, and build a
|
|
RESULT_DECL for it. If this is a subroutine with alternate
|
|
returns, build a RESULT_DECL for it. */
|
|
result_decl = NULL_TREE;
|
|
/* TODO: Shouldn't this just be TREE_TYPE (TREE_TYPE (fndecl)). */
|
|
if (attr.function)
|
|
{
|
|
if (gfc_return_by_reference (sym))
|
|
type = void_type_node;
|
|
else
|
|
{
|
|
if (sym->result != sym)
|
|
result_decl = gfc_sym_identifier (sym->result);
|
|
|
|
type = TREE_TYPE (TREE_TYPE (fndecl));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Look for alternate return placeholders. */
|
|
int has_alternate_returns = 0;
|
|
for (f = sym->formal; f; f = f->next)
|
|
{
|
|
if (f->sym == NULL)
|
|
{
|
|
has_alternate_returns = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (has_alternate_returns)
|
|
type = integer_type_node;
|
|
else
|
|
type = void_type_node;
|
|
}
|
|
|
|
result_decl = build_decl (input_location,
|
|
RESULT_DECL, result_decl, type);
|
|
DECL_ARTIFICIAL (result_decl) = 1;
|
|
DECL_IGNORED_P (result_decl) = 1;
|
|
DECL_CONTEXT (result_decl) = fndecl;
|
|
DECL_RESULT (fndecl) = result_decl;
|
|
|
|
/* Don't call layout_decl for a RESULT_DECL.
|
|
layout_decl (result_decl, 0); */
|
|
|
|
/* Set up all attributes for the function. */
|
|
DECL_CONTEXT (fndecl) = current_function_decl;
|
|
DECL_EXTERNAL (fndecl) = 0;
|
|
|
|
/* This specifies if a function is globally visible, i.e. it is
|
|
the opposite of declaring static in C. */
|
|
if (DECL_CONTEXT (fndecl) == NULL_TREE
|
|
&& !sym->attr.entry_master && !sym->attr.is_main_program)
|
|
TREE_PUBLIC (fndecl) = 1;
|
|
|
|
/* TREE_STATIC means the function body is defined here. */
|
|
TREE_STATIC (fndecl) = 1;
|
|
|
|
/* Set attributes for PURE functions. A call to a PURE function in the
|
|
Fortran 95 sense is both pure and without side effects in the C
|
|
sense. */
|
|
if (attr.pure || attr.elemental)
|
|
{
|
|
/* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments
|
|
including an alternate return. In that case it can also be
|
|
marked as PURE. See also in gfc_get_extern_function_decl(). */
|
|
if (attr.function && !gfc_return_by_reference (sym))
|
|
DECL_PURE_P (fndecl) = 1;
|
|
TREE_SIDE_EFFECTS (fndecl) = 0;
|
|
}
|
|
|
|
|
|
/* Layout the function declaration and put it in the binding level
|
|
of the current function. */
|
|
pushdecl (fndecl);
|
|
|
|
sym->backend_decl = fndecl;
|
|
}
|
|
|
|
|
|
/* Create the DECL_ARGUMENTS for a procedure. */
|
|
|
|
static void
|
|
create_function_arglist (gfc_symbol * sym)
|
|
{
|
|
tree fndecl;
|
|
gfc_formal_arglist *f;
|
|
tree typelist, hidden_typelist;
|
|
tree arglist, hidden_arglist;
|
|
tree type;
|
|
tree parm;
|
|
|
|
fndecl = sym->backend_decl;
|
|
|
|
/* Build formal argument list. Make sure that their TREE_CONTEXT is
|
|
the new FUNCTION_DECL node. */
|
|
arglist = NULL_TREE;
|
|
hidden_arglist = NULL_TREE;
|
|
typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl));
|
|
|
|
if (sym->attr.entry_master)
|
|
{
|
|
type = TREE_VALUE (typelist);
|
|
parm = build_decl (input_location,
|
|
PARM_DECL, get_identifier ("__entry"), type);
|
|
|
|
DECL_CONTEXT (parm) = fndecl;
|
|
DECL_ARG_TYPE (parm) = type;
|
|
TREE_READONLY (parm) = 1;
|
|
gfc_finish_decl (parm);
|
|
DECL_ARTIFICIAL (parm) = 1;
|
|
|
|
arglist = chainon (arglist, parm);
|
|
typelist = TREE_CHAIN (typelist);
|
|
}
|
|
|
|
if (gfc_return_by_reference (sym))
|
|
{
|
|
tree type = TREE_VALUE (typelist), length = NULL;
|
|
|
|
if (sym->ts.type == BT_CHARACTER)
|
|
{
|
|
/* Length of character result. */
|
|
tree len_type = TREE_VALUE (TREE_CHAIN (typelist));
|
|
gcc_assert (len_type == gfc_charlen_type_node);
|
|
|
|
length = build_decl (input_location,
|
|
PARM_DECL,
|
|
get_identifier (".__result"),
|
|
len_type);
|
|
if (!sym->ts.u.cl->length)
|
|
{
|
|
sym->ts.u.cl->backend_decl = length;
|
|
TREE_USED (length) = 1;
|
|
}
|
|
gcc_assert (TREE_CODE (length) == PARM_DECL);
|
|
DECL_CONTEXT (length) = fndecl;
|
|
DECL_ARG_TYPE (length) = len_type;
|
|
TREE_READONLY (length) = 1;
|
|
DECL_ARTIFICIAL (length) = 1;
|
|
gfc_finish_decl (length);
|
|
if (sym->ts.u.cl->backend_decl == NULL
|
|
|| sym->ts.u.cl->backend_decl == length)
|
|
{
|
|
gfc_symbol *arg;
|
|
tree backend_decl;
|
|
|
|
if (sym->ts.u.cl->backend_decl == NULL)
|
|
{
|
|
tree len = build_decl (input_location,
|
|
VAR_DECL,
|
|
get_identifier ("..__result"),
|
|
gfc_charlen_type_node);
|
|
DECL_ARTIFICIAL (len) = 1;
|
|
TREE_USED (len) = 1;
|
|
sym->ts.u.cl->backend_decl = len;
|
|
}
|
|
|
|
/* Make sure PARM_DECL type doesn't point to incomplete type. */
|
|
arg = sym->result ? sym->result : sym;
|
|
backend_decl = arg->backend_decl;
|
|
/* Temporary clear it, so that gfc_sym_type creates complete
|
|
type. */
|
|
arg->backend_decl = NULL;
|
|
type = gfc_sym_type (arg);
|
|
arg->backend_decl = backend_decl;
|
|
type = build_reference_type (type);
|
|
}
|
|
}
|
|
|
|
parm = build_decl (input_location,
|
|
PARM_DECL, get_identifier ("__result"), type);
|
|
|
|
DECL_CONTEXT (parm) = fndecl;
|
|
DECL_ARG_TYPE (parm) = TREE_VALUE (typelist);
|
|
TREE_READONLY (parm) = 1;
|
|
DECL_ARTIFICIAL (parm) = 1;
|
|
gfc_finish_decl (parm);
|
|
|
|
arglist = chainon (arglist, parm);
|
|
typelist = TREE_CHAIN (typelist);
|
|
|
|
if (sym->ts.type == BT_CHARACTER)
|
|
{
|
|
gfc_allocate_lang_decl (parm);
|
|
arglist = chainon (arglist, length);
|
|
typelist = TREE_CHAIN (typelist);
|
|
}
|
|
}
|
|
|
|
hidden_typelist = typelist;
|
|
for (f = sym->formal; f; f = f->next)
|
|
if (f->sym != NULL) /* Ignore alternate returns. */
|
|
hidden_typelist = TREE_CHAIN (hidden_typelist);
|
|
|
|
for (f = sym->formal; f; f = f->next)
|
|
{
|
|
char name[GFC_MAX_SYMBOL_LEN + 2];
|
|
|
|
/* Ignore alternate returns. */
|
|
if (f->sym == NULL)
|
|
continue;
|
|
|
|
type = TREE_VALUE (typelist);
|
|
|
|
if (f->sym->ts.type == BT_CHARACTER
|
|
&& (!sym->attr.is_bind_c || sym->attr.entry_master))
|
|
{
|
|
tree len_type = TREE_VALUE (hidden_typelist);
|
|
tree length = NULL_TREE;
|
|
gcc_assert (len_type == gfc_charlen_type_node);
|
|
|
|
strcpy (&name[1], f->sym->name);
|
|
name[0] = '_';
|
|
length = build_decl (input_location,
|
|
PARM_DECL, get_identifier (name), len_type);
|
|
|
|
hidden_arglist = chainon (hidden_arglist, length);
|
|
DECL_CONTEXT (length) = fndecl;
|
|
DECL_ARTIFICIAL (length) = 1;
|
|
DECL_ARG_TYPE (length) = len_type;
|
|
TREE_READONLY (length) = 1;
|
|
gfc_finish_decl (length);
|
|
|
|
/* Remember the passed value. */
|
|
if (f->sym->ts.u.cl->passed_length != NULL)
|
|
{
|
|
/* This can happen if the same type is used for multiple
|
|
arguments. We need to copy cl as otherwise
|
|
cl->passed_length gets overwritten. */
|
|
f->sym->ts.u.cl = gfc_new_charlen (f->sym->ns, f->sym->ts.u.cl);
|
|
}
|
|
f->sym->ts.u.cl->passed_length = length;
|
|
|
|
/* Use the passed value for assumed length variables. */
|
|
if (!f->sym->ts.u.cl->length)
|
|
{
|
|
TREE_USED (length) = 1;
|
|
gcc_assert (!f->sym->ts.u.cl->backend_decl);
|
|
f->sym->ts.u.cl->backend_decl = length;
|
|
}
|
|
|
|
hidden_typelist = TREE_CHAIN (hidden_typelist);
|
|
|
|
if (f->sym->ts.u.cl->backend_decl == NULL
|
|
|| f->sym->ts.u.cl->backend_decl == length)
|
|
{
|
|
if (f->sym->ts.u.cl->backend_decl == NULL)
|
|
gfc_create_string_length (f->sym);
|
|
|
|
/* Make sure PARM_DECL type doesn't point to incomplete type. */
|
|
if (f->sym->attr.flavor == FL_PROCEDURE)
|
|
type = build_pointer_type (gfc_get_function_type (f->sym));
|
|
else
|
|
type = gfc_sym_type (f->sym);
|
|
}
|
|
}
|
|
|
|
/* For non-constant length array arguments, make sure they use
|
|
a different type node from TYPE_ARG_TYPES type. */
|
|
if (f->sym->attr.dimension
|
|
&& type == TREE_VALUE (typelist)
|
|
&& TREE_CODE (type) == POINTER_TYPE
|
|
&& GFC_ARRAY_TYPE_P (type)
|
|
&& f->sym->as->type != AS_ASSUMED_SIZE
|
|
&& ! COMPLETE_TYPE_P (TREE_TYPE (type)))
|
|
{
|
|
if (f->sym->attr.flavor == FL_PROCEDURE)
|
|
type = build_pointer_type (gfc_get_function_type (f->sym));
|
|
else
|
|
type = gfc_sym_type (f->sym);
|
|
}
|
|
|
|
if (f->sym->attr.proc_pointer)
|
|
type = build_pointer_type (type);
|
|
|
|
/* Build the argument declaration. */
|
|
parm = build_decl (input_location,
|
|
PARM_DECL, gfc_sym_identifier (f->sym), type);
|
|
|
|
/* Fill in arg stuff. */
|
|
DECL_CONTEXT (parm) = fndecl;
|
|
DECL_ARG_TYPE (parm) = TREE_VALUE (typelist);
|
|
/* All implementation args are read-only. */
|
|
TREE_READONLY (parm) = 1;
|
|
if (POINTER_TYPE_P (type)
|
|
&& (!f->sym->attr.proc_pointer
|
|
&& f->sym->attr.flavor != FL_PROCEDURE))
|
|
DECL_BY_REFERENCE (parm) = 1;
|
|
|
|
gfc_finish_decl (parm);
|
|
|
|
f->sym->backend_decl = parm;
|
|
|
|
arglist = chainon (arglist, parm);
|
|
typelist = TREE_CHAIN (typelist);
|
|
}
|
|
|
|
/* Add the hidden string length parameters, unless the procedure
|
|
is bind(C). */
|
|
if (!sym->attr.is_bind_c)
|
|
arglist = chainon (arglist, hidden_arglist);
|
|
|
|
gcc_assert (hidden_typelist == NULL_TREE
|
|
|| TREE_VALUE (hidden_typelist) == void_type_node);
|
|
DECL_ARGUMENTS (fndecl) = arglist;
|
|
}
|
|
|
|
/* Do the setup necessary before generating the body of a function. */
|
|
|
|
static void
|
|
trans_function_start (gfc_symbol * sym)
|
|
{
|
|
tree fndecl;
|
|
|
|
fndecl = sym->backend_decl;
|
|
|
|
/* Let GCC know the current scope is this function. */
|
|
current_function_decl = fndecl;
|
|
|
|
/* Let the world know what we're about to do. */
|
|
announce_function (fndecl);
|
|
|
|
if (DECL_CONTEXT (fndecl) == NULL_TREE)
|
|
{
|
|
/* Create RTL for function declaration. */
|
|
rest_of_decl_compilation (fndecl, 1, 0);
|
|
}
|
|
|
|
/* Create RTL for function definition. */
|
|
make_decl_rtl (fndecl);
|
|
|
|
init_function_start (fndecl);
|
|
|
|
/* Even though we're inside a function body, we still don't want to
|
|
call expand_expr to calculate the size of a variable-sized array.
|
|
We haven't necessarily assigned RTL to all variables yet, so it's
|
|
not safe to try to expand expressions involving them. */
|
|
cfun->dont_save_pending_sizes_p = 1;
|
|
|
|
/* function.c requires a push at the start of the function. */
|
|
pushlevel (0);
|
|
}
|
|
|
|
/* Create thunks for alternate entry points. */
|
|
|
|
static void
|
|
build_entry_thunks (gfc_namespace * ns)
|
|
{
|
|
gfc_formal_arglist *formal;
|
|
gfc_formal_arglist *thunk_formal;
|
|
gfc_entry_list *el;
|
|
gfc_symbol *thunk_sym;
|
|
stmtblock_t body;
|
|
tree thunk_fndecl;
|
|
tree args;
|
|
tree string_args;
|
|
tree tmp;
|
|
locus old_loc;
|
|
|
|
/* This should always be a toplevel function. */
|
|
gcc_assert (current_function_decl == NULL_TREE);
|
|
|
|
gfc_get_backend_locus (&old_loc);
|
|
for (el = ns->entries; el; el = el->next)
|
|
{
|
|
thunk_sym = el->sym;
|
|
|
|
build_function_decl (thunk_sym);
|
|
create_function_arglist (thunk_sym);
|
|
|
|
trans_function_start (thunk_sym);
|
|
|
|
thunk_fndecl = thunk_sym->backend_decl;
|
|
|
|
gfc_init_block (&body);
|
|
|
|
/* Pass extra parameter identifying this entry point. */
|
|
tmp = build_int_cst (gfc_array_index_type, el->id);
|
|
args = tree_cons (NULL_TREE, tmp, NULL_TREE);
|
|
string_args = NULL_TREE;
|
|
|
|
if (thunk_sym->attr.function)
|
|
{
|
|
if (gfc_return_by_reference (ns->proc_name))
|
|
{
|
|
tree ref = DECL_ARGUMENTS (current_function_decl);
|
|
args = tree_cons (NULL_TREE, ref, args);
|
|
if (ns->proc_name->ts.type == BT_CHARACTER)
|
|
args = tree_cons (NULL_TREE, TREE_CHAIN (ref),
|
|
args);
|
|
}
|
|
}
|
|
|
|
for (formal = ns->proc_name->formal; formal; formal = formal->next)
|
|
{
|
|
/* Ignore alternate returns. */
|
|
if (formal->sym == NULL)
|
|
continue;
|
|
|
|
/* We don't have a clever way of identifying arguments, so resort to
|
|
a brute-force search. */
|
|
for (thunk_formal = thunk_sym->formal;
|
|
thunk_formal;
|
|
thunk_formal = thunk_formal->next)
|
|
{
|
|
if (thunk_formal->sym == formal->sym)
|
|
break;
|
|
}
|
|
|
|
if (thunk_formal)
|
|
{
|
|
/* Pass the argument. */
|
|
DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1;
|
|
args = tree_cons (NULL_TREE, thunk_formal->sym->backend_decl,
|
|
args);
|
|
if (formal->sym->ts.type == BT_CHARACTER)
|
|
{
|
|
tmp = thunk_formal->sym->ts.u.cl->backend_decl;
|
|
string_args = tree_cons (NULL_TREE, tmp, string_args);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Pass NULL for a missing argument. */
|
|
args = tree_cons (NULL_TREE, null_pointer_node, args);
|
|
if (formal->sym->ts.type == BT_CHARACTER)
|
|
{
|
|
tmp = build_int_cst (gfc_charlen_type_node, 0);
|
|
string_args = tree_cons (NULL_TREE, tmp, string_args);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Call the master function. */
|
|
args = nreverse (args);
|
|
args = chainon (args, nreverse (string_args));
|
|
tmp = ns->proc_name->backend_decl;
|
|
tmp = build_function_call_expr (input_location, tmp, args);
|
|
if (ns->proc_name->attr.mixed_entry_master)
|
|
{
|
|
tree union_decl, field;
|
|
tree master_type = TREE_TYPE (ns->proc_name->backend_decl);
|
|
|
|
union_decl = build_decl (input_location,
|
|
VAR_DECL, get_identifier ("__result"),
|
|
TREE_TYPE (master_type));
|
|
DECL_ARTIFICIAL (union_decl) = 1;
|
|
DECL_EXTERNAL (union_decl) = 0;
|
|
TREE_PUBLIC (union_decl) = 0;
|
|
TREE_USED (union_decl) = 1;
|
|
layout_decl (union_decl, 0);
|
|
pushdecl (union_decl);
|
|
|
|
DECL_CONTEXT (union_decl) = current_function_decl;
|
|
tmp = fold_build2 (MODIFY_EXPR, TREE_TYPE (union_decl),
|
|
union_decl, tmp);
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
|
|
for (field = TYPE_FIELDS (TREE_TYPE (union_decl));
|
|
field; field = TREE_CHAIN (field))
|
|
if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)),
|
|
thunk_sym->result->name) == 0)
|
|
break;
|
|
gcc_assert (field != NULL_TREE);
|
|
tmp = fold_build3 (COMPONENT_REF, TREE_TYPE (field),
|
|
union_decl, field, NULL_TREE);
|
|
tmp = fold_build2 (MODIFY_EXPR,
|
|
TREE_TYPE (DECL_RESULT (current_function_decl)),
|
|
DECL_RESULT (current_function_decl), tmp);
|
|
tmp = build1_v (RETURN_EXPR, tmp);
|
|
}
|
|
else if (TREE_TYPE (DECL_RESULT (current_function_decl))
|
|
!= void_type_node)
|
|
{
|
|
tmp = fold_build2 (MODIFY_EXPR,
|
|
TREE_TYPE (DECL_RESULT (current_function_decl)),
|
|
DECL_RESULT (current_function_decl), tmp);
|
|
tmp = build1_v (RETURN_EXPR, tmp);
|
|
}
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
|
|
/* Finish off this function and send it for code generation. */
|
|
DECL_SAVED_TREE (thunk_fndecl) = gfc_finish_block (&body);
|
|
tmp = getdecls ();
|
|
poplevel (1, 0, 1);
|
|
BLOCK_SUPERCONTEXT (DECL_INITIAL (thunk_fndecl)) = thunk_fndecl;
|
|
DECL_SAVED_TREE (thunk_fndecl)
|
|
= build3_v (BIND_EXPR, tmp, DECL_SAVED_TREE (thunk_fndecl),
|
|
DECL_INITIAL (thunk_fndecl));
|
|
|
|
/* Output the GENERIC tree. */
|
|
dump_function (TDI_original, thunk_fndecl);
|
|
|
|
/* Store the end of the function, so that we get good line number
|
|
info for the epilogue. */
|
|
cfun->function_end_locus = input_location;
|
|
|
|
/* We're leaving the context of this function, so zap cfun.
|
|
It's still in DECL_STRUCT_FUNCTION, and we'll restore it in
|
|
tree_rest_of_compilation. */
|
|
set_cfun (NULL);
|
|
|
|
current_function_decl = NULL_TREE;
|
|
|
|
cgraph_finalize_function (thunk_fndecl, true);
|
|
|
|
/* We share the symbols in the formal argument list with other entry
|
|
points and the master function. Clear them so that they are
|
|
recreated for each function. */
|
|
for (formal = thunk_sym->formal; formal; formal = formal->next)
|
|
if (formal->sym != NULL) /* Ignore alternate returns. */
|
|
{
|
|
formal->sym->backend_decl = NULL_TREE;
|
|
if (formal->sym->ts.type == BT_CHARACTER)
|
|
formal->sym->ts.u.cl->backend_decl = NULL_TREE;
|
|
}
|
|
|
|
if (thunk_sym->attr.function)
|
|
{
|
|
if (thunk_sym->ts.type == BT_CHARACTER)
|
|
thunk_sym->ts.u.cl->backend_decl = NULL_TREE;
|
|
if (thunk_sym->result->ts.type == BT_CHARACTER)
|
|
thunk_sym->result->ts.u.cl->backend_decl = NULL_TREE;
|
|
}
|
|
}
|
|
|
|
gfc_set_backend_locus (&old_loc);
|
|
}
|
|
|
|
|
|
/* Create a decl for a function, and create any thunks for alternate entry
|
|
points. */
|
|
|
|
void
|
|
gfc_create_function_decl (gfc_namespace * ns)
|
|
{
|
|
/* Create a declaration for the master function. */
|
|
build_function_decl (ns->proc_name);
|
|
|
|
/* Compile the entry thunks. */
|
|
if (ns->entries)
|
|
build_entry_thunks (ns);
|
|
|
|
/* Now create the read argument list. */
|
|
create_function_arglist (ns->proc_name);
|
|
}
|
|
|
|
/* Return the decl used to hold the function return value. If
|
|
parent_flag is set, the context is the parent_scope. */
|
|
|
|
tree
|
|
gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag)
|
|
{
|
|
tree decl;
|
|
tree length;
|
|
tree this_fake_result_decl;
|
|
tree this_function_decl;
|
|
|
|
char name[GFC_MAX_SYMBOL_LEN + 10];
|
|
|
|
if (parent_flag)
|
|
{
|
|
this_fake_result_decl = parent_fake_result_decl;
|
|
this_function_decl = DECL_CONTEXT (current_function_decl);
|
|
}
|
|
else
|
|
{
|
|
this_fake_result_decl = current_fake_result_decl;
|
|
this_function_decl = current_function_decl;
|
|
}
|
|
|
|
if (sym
|
|
&& sym->ns->proc_name->backend_decl == this_function_decl
|
|
&& sym->ns->proc_name->attr.entry_master
|
|
&& sym != sym->ns->proc_name)
|
|
{
|
|
tree t = NULL, var;
|
|
if (this_fake_result_decl != NULL)
|
|
for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t))
|
|
if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0)
|
|
break;
|
|
if (t)
|
|
return TREE_VALUE (t);
|
|
decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag);
|
|
|
|
if (parent_flag)
|
|
this_fake_result_decl = parent_fake_result_decl;
|
|
else
|
|
this_fake_result_decl = current_fake_result_decl;
|
|
|
|
if (decl && sym->ns->proc_name->attr.mixed_entry_master)
|
|
{
|
|
tree field;
|
|
|
|
for (field = TYPE_FIELDS (TREE_TYPE (decl));
|
|
field; field = TREE_CHAIN (field))
|
|
if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)),
|
|
sym->name) == 0)
|
|
break;
|
|
|
|
gcc_assert (field != NULL_TREE);
|
|
decl = fold_build3 (COMPONENT_REF, TREE_TYPE (field),
|
|
decl, field, NULL_TREE);
|
|
}
|
|
|
|
var = create_tmp_var_raw (TREE_TYPE (decl), sym->name);
|
|
if (parent_flag)
|
|
gfc_add_decl_to_parent_function (var);
|
|
else
|
|
gfc_add_decl_to_function (var);
|
|
|
|
SET_DECL_VALUE_EXPR (var, decl);
|
|
DECL_HAS_VALUE_EXPR_P (var) = 1;
|
|
GFC_DECL_RESULT (var) = 1;
|
|
|
|
TREE_CHAIN (this_fake_result_decl)
|
|
= tree_cons (get_identifier (sym->name), var,
|
|
TREE_CHAIN (this_fake_result_decl));
|
|
return var;
|
|
}
|
|
|
|
if (this_fake_result_decl != NULL_TREE)
|
|
return TREE_VALUE (this_fake_result_decl);
|
|
|
|
/* Only when gfc_get_fake_result_decl is called by gfc_trans_return,
|
|
sym is NULL. */
|
|
if (!sym)
|
|
return NULL_TREE;
|
|
|
|
if (sym->ts.type == BT_CHARACTER)
|
|
{
|
|
if (sym->ts.u.cl->backend_decl == NULL_TREE)
|
|
length = gfc_create_string_length (sym);
|
|
else
|
|
length = sym->ts.u.cl->backend_decl;
|
|
if (TREE_CODE (length) == VAR_DECL
|
|
&& DECL_CONTEXT (length) == NULL_TREE)
|
|
gfc_add_decl_to_function (length);
|
|
}
|
|
|
|
if (gfc_return_by_reference (sym))
|
|
{
|
|
decl = DECL_ARGUMENTS (this_function_decl);
|
|
|
|
if (sym->ns->proc_name->backend_decl == this_function_decl
|
|
&& sym->ns->proc_name->attr.entry_master)
|
|
decl = TREE_CHAIN (decl);
|
|
|
|
TREE_USED (decl) = 1;
|
|
if (sym->as)
|
|
decl = gfc_build_dummy_array_decl (sym, decl);
|
|
}
|
|
else
|
|
{
|
|
sprintf (name, "__result_%.20s",
|
|
IDENTIFIER_POINTER (DECL_NAME (this_function_decl)));
|
|
|
|
if (!sym->attr.mixed_entry_master && sym->attr.function)
|
|
decl = build_decl (input_location,
|
|
VAR_DECL, get_identifier (name),
|
|
gfc_sym_type (sym));
|
|
else
|
|
decl = build_decl (input_location,
|
|
VAR_DECL, get_identifier (name),
|
|
TREE_TYPE (TREE_TYPE (this_function_decl)));
|
|
DECL_ARTIFICIAL (decl) = 1;
|
|
DECL_EXTERNAL (decl) = 0;
|
|
TREE_PUBLIC (decl) = 0;
|
|
TREE_USED (decl) = 1;
|
|
GFC_DECL_RESULT (decl) = 1;
|
|
TREE_ADDRESSABLE (decl) = 1;
|
|
|
|
layout_decl (decl, 0);
|
|
|
|
if (parent_flag)
|
|
gfc_add_decl_to_parent_function (decl);
|
|
else
|
|
gfc_add_decl_to_function (decl);
|
|
}
|
|
|
|
if (parent_flag)
|
|
parent_fake_result_decl = build_tree_list (NULL, decl);
|
|
else
|
|
current_fake_result_decl = build_tree_list (NULL, decl);
|
|
|
|
return decl;
|
|
}
|
|
|
|
|
|
/* Builds a function decl. The remaining parameters are the types of the
|
|
function arguments. Negative nargs indicates a varargs function. */
|
|
|
|
static tree
|
|
build_library_function_decl_1 (tree name, const char *spec,
|
|
tree rettype, int nargs, va_list p)
|
|
{
|
|
tree arglist;
|
|
tree argtype;
|
|
tree fntype;
|
|
tree fndecl;
|
|
int n;
|
|
|
|
/* Library functions must be declared with global scope. */
|
|
gcc_assert (current_function_decl == NULL_TREE);
|
|
|
|
/* Create a list of the argument types. */
|
|
for (arglist = NULL_TREE, n = abs (nargs); n > 0; n--)
|
|
{
|
|
argtype = va_arg (p, tree);
|
|
arglist = gfc_chainon_list (arglist, argtype);
|
|
}
|
|
|
|
if (nargs >= 0)
|
|
{
|
|
/* Terminate the list. */
|
|
arglist = gfc_chainon_list (arglist, void_type_node);
|
|
}
|
|
|
|
/* Build the function type and decl. */
|
|
fntype = build_function_type (rettype, arglist);
|
|
if (spec)
|
|
{
|
|
tree attr_args = build_tree_list (NULL_TREE,
|
|
build_string (strlen (spec), spec));
|
|
tree attrs = tree_cons (get_identifier ("fn spec"),
|
|
attr_args, TYPE_ATTRIBUTES (fntype));
|
|
fntype = build_type_attribute_variant (fntype, attrs);
|
|
}
|
|
fndecl = build_decl (input_location,
|
|
FUNCTION_DECL, name, fntype);
|
|
|
|
/* Mark this decl as external. */
|
|
DECL_EXTERNAL (fndecl) = 1;
|
|
TREE_PUBLIC (fndecl) = 1;
|
|
|
|
pushdecl (fndecl);
|
|
|
|
rest_of_decl_compilation (fndecl, 1, 0);
|
|
|
|
return fndecl;
|
|
}
|
|
|
|
/* Builds a function decl. The remaining parameters are the types of the
|
|
function arguments. Negative nargs indicates a varargs function. */
|
|
|
|
tree
|
|
gfc_build_library_function_decl (tree name, tree rettype, int nargs, ...)
|
|
{
|
|
tree ret;
|
|
va_list args;
|
|
va_start (args, nargs);
|
|
ret = build_library_function_decl_1 (name, NULL, rettype, nargs, args);
|
|
va_end (args);
|
|
return ret;
|
|
}
|
|
|
|
/* Builds a function decl. The remaining parameters are the types of the
|
|
function arguments. Negative nargs indicates a varargs function.
|
|
The SPEC parameter specifies the function argument and return type
|
|
specification according to the fnspec function type attribute. */
|
|
|
|
static tree
|
|
gfc_build_library_function_decl_with_spec (tree name, const char *spec,
|
|
tree rettype, int nargs, ...)
|
|
{
|
|
tree ret;
|
|
va_list args;
|
|
va_start (args, nargs);
|
|
ret = build_library_function_decl_1 (name, spec, rettype, nargs, args);
|
|
va_end (args);
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gfc_build_intrinsic_function_decls (void)
|
|
{
|
|
tree gfc_int4_type_node = gfc_get_int_type (4);
|
|
tree gfc_int8_type_node = gfc_get_int_type (8);
|
|
tree gfc_int16_type_node = gfc_get_int_type (16);
|
|
tree gfc_logical4_type_node = gfc_get_logical_type (4);
|
|
tree pchar1_type_node = gfc_get_pchar_type (1);
|
|
tree pchar4_type_node = gfc_get_pchar_type (4);
|
|
|
|
/* String functions. */
|
|
gfor_fndecl_compare_string =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("compare_string")),
|
|
integer_type_node, 4,
|
|
gfc_charlen_type_node, pchar1_type_node,
|
|
gfc_charlen_type_node, pchar1_type_node);
|
|
|
|
gfor_fndecl_concat_string =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("concat_string")),
|
|
void_type_node, 6,
|
|
gfc_charlen_type_node, pchar1_type_node,
|
|
gfc_charlen_type_node, pchar1_type_node,
|
|
gfc_charlen_type_node, pchar1_type_node);
|
|
|
|
gfor_fndecl_string_len_trim =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("string_len_trim")),
|
|
gfc_int4_type_node, 2,
|
|
gfc_charlen_type_node, pchar1_type_node);
|
|
|
|
gfor_fndecl_string_index =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("string_index")),
|
|
gfc_int4_type_node, 5,
|
|
gfc_charlen_type_node, pchar1_type_node,
|
|
gfc_charlen_type_node, pchar1_type_node,
|
|
gfc_logical4_type_node);
|
|
|
|
gfor_fndecl_string_scan =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("string_scan")),
|
|
gfc_int4_type_node, 5,
|
|
gfc_charlen_type_node, pchar1_type_node,
|
|
gfc_charlen_type_node, pchar1_type_node,
|
|
gfc_logical4_type_node);
|
|
|
|
gfor_fndecl_string_verify =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("string_verify")),
|
|
gfc_int4_type_node, 5,
|
|
gfc_charlen_type_node, pchar1_type_node,
|
|
gfc_charlen_type_node, pchar1_type_node,
|
|
gfc_logical4_type_node);
|
|
|
|
gfor_fndecl_string_trim =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("string_trim")),
|
|
void_type_node, 4,
|
|
build_pointer_type (gfc_charlen_type_node),
|
|
build_pointer_type (pchar1_type_node),
|
|
gfc_charlen_type_node, pchar1_type_node);
|
|
|
|
gfor_fndecl_string_minmax =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("string_minmax")),
|
|
void_type_node, -4,
|
|
build_pointer_type (gfc_charlen_type_node),
|
|
build_pointer_type (pchar1_type_node),
|
|
integer_type_node, integer_type_node);
|
|
|
|
gfor_fndecl_adjustl =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("adjustl")),
|
|
void_type_node, 3, pchar1_type_node,
|
|
gfc_charlen_type_node, pchar1_type_node);
|
|
|
|
gfor_fndecl_adjustr =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("adjustr")),
|
|
void_type_node, 3, pchar1_type_node,
|
|
gfc_charlen_type_node, pchar1_type_node);
|
|
|
|
gfor_fndecl_select_string =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("select_string")),
|
|
integer_type_node, 4, pvoid_type_node,
|
|
integer_type_node, pchar1_type_node,
|
|
gfc_charlen_type_node);
|
|
|
|
gfor_fndecl_compare_string_char4 =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("compare_string_char4")),
|
|
integer_type_node, 4,
|
|
gfc_charlen_type_node, pchar4_type_node,
|
|
gfc_charlen_type_node, pchar4_type_node);
|
|
|
|
gfor_fndecl_concat_string_char4 =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("concat_string_char4")),
|
|
void_type_node, 6,
|
|
gfc_charlen_type_node, pchar4_type_node,
|
|
gfc_charlen_type_node, pchar4_type_node,
|
|
gfc_charlen_type_node, pchar4_type_node);
|
|
|
|
gfor_fndecl_string_len_trim_char4 =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("string_len_trim_char4")),
|
|
gfc_charlen_type_node, 2,
|
|
gfc_charlen_type_node, pchar4_type_node);
|
|
|
|
gfor_fndecl_string_index_char4 =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("string_index_char4")),
|
|
gfc_charlen_type_node, 5,
|
|
gfc_charlen_type_node, pchar4_type_node,
|
|
gfc_charlen_type_node, pchar4_type_node,
|
|
gfc_logical4_type_node);
|
|
|
|
gfor_fndecl_string_scan_char4 =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("string_scan_char4")),
|
|
gfc_charlen_type_node, 5,
|
|
gfc_charlen_type_node, pchar4_type_node,
|
|
gfc_charlen_type_node, pchar4_type_node,
|
|
gfc_logical4_type_node);
|
|
|
|
gfor_fndecl_string_verify_char4 =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("string_verify_char4")),
|
|
gfc_charlen_type_node, 5,
|
|
gfc_charlen_type_node, pchar4_type_node,
|
|
gfc_charlen_type_node, pchar4_type_node,
|
|
gfc_logical4_type_node);
|
|
|
|
gfor_fndecl_string_trim_char4 =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("string_trim_char4")),
|
|
void_type_node, 4,
|
|
build_pointer_type (gfc_charlen_type_node),
|
|
build_pointer_type (pchar4_type_node),
|
|
gfc_charlen_type_node, pchar4_type_node);
|
|
|
|
gfor_fndecl_string_minmax_char4 =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("string_minmax_char4")),
|
|
void_type_node, -4,
|
|
build_pointer_type (gfc_charlen_type_node),
|
|
build_pointer_type (pchar4_type_node),
|
|
integer_type_node, integer_type_node);
|
|
|
|
gfor_fndecl_adjustl_char4 =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("adjustl_char4")),
|
|
void_type_node, 3, pchar4_type_node,
|
|
gfc_charlen_type_node, pchar4_type_node);
|
|
|
|
gfor_fndecl_adjustr_char4 =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("adjustr_char4")),
|
|
void_type_node, 3, pchar4_type_node,
|
|
gfc_charlen_type_node, pchar4_type_node);
|
|
|
|
gfor_fndecl_select_string_char4 =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("select_string_char4")),
|
|
integer_type_node, 4, pvoid_type_node,
|
|
integer_type_node, pvoid_type_node,
|
|
gfc_charlen_type_node);
|
|
|
|
|
|
/* Conversion between character kinds. */
|
|
|
|
gfor_fndecl_convert_char1_to_char4 =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("convert_char1_to_char4")),
|
|
void_type_node, 3,
|
|
build_pointer_type (pchar4_type_node),
|
|
gfc_charlen_type_node, pchar1_type_node);
|
|
|
|
gfor_fndecl_convert_char4_to_char1 =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("convert_char4_to_char1")),
|
|
void_type_node, 3,
|
|
build_pointer_type (pchar1_type_node),
|
|
gfc_charlen_type_node, pchar4_type_node);
|
|
|
|
/* Misc. functions. */
|
|
|
|
gfor_fndecl_ttynam =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("ttynam")),
|
|
void_type_node,
|
|
3,
|
|
pchar_type_node,
|
|
gfc_charlen_type_node,
|
|
integer_type_node);
|
|
|
|
gfor_fndecl_fdate =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("fdate")),
|
|
void_type_node,
|
|
2,
|
|
pchar_type_node,
|
|
gfc_charlen_type_node);
|
|
|
|
gfor_fndecl_ctime =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("ctime")),
|
|
void_type_node,
|
|
3,
|
|
pchar_type_node,
|
|
gfc_charlen_type_node,
|
|
gfc_int8_type_node);
|
|
|
|
gfor_fndecl_sc_kind =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("selected_char_kind")),
|
|
gfc_int4_type_node, 2,
|
|
gfc_charlen_type_node, pchar_type_node);
|
|
|
|
gfor_fndecl_si_kind =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("selected_int_kind")),
|
|
gfc_int4_type_node, 1, pvoid_type_node);
|
|
|
|
gfor_fndecl_sr_kind =
|
|
gfc_build_library_function_decl (get_identifier
|
|
(PREFIX("selected_real_kind")),
|
|
gfc_int4_type_node, 2,
|
|
pvoid_type_node, pvoid_type_node);
|
|
|
|
/* Power functions. */
|
|
{
|
|
tree ctype, rtype, itype, jtype;
|
|
int rkind, ikind, jkind;
|
|
#define NIKINDS 3
|
|
#define NRKINDS 4
|
|
static int ikinds[NIKINDS] = {4, 8, 16};
|
|
static int rkinds[NRKINDS] = {4, 8, 10, 16};
|
|
char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */
|
|
|
|
for (ikind=0; ikind < NIKINDS; ikind++)
|
|
{
|
|
itype = gfc_get_int_type (ikinds[ikind]);
|
|
|
|
for (jkind=0; jkind < NIKINDS; jkind++)
|
|
{
|
|
jtype = gfc_get_int_type (ikinds[jkind]);
|
|
if (itype && jtype)
|
|
{
|
|
sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind],
|
|
ikinds[jkind]);
|
|
gfor_fndecl_math_powi[jkind][ikind].integer =
|
|
gfc_build_library_function_decl (get_identifier (name),
|
|
jtype, 2, jtype, itype);
|
|
TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1;
|
|
}
|
|
}
|
|
|
|
for (rkind = 0; rkind < NRKINDS; rkind ++)
|
|
{
|
|
rtype = gfc_get_real_type (rkinds[rkind]);
|
|
if (rtype && itype)
|
|
{
|
|
sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind],
|
|
ikinds[ikind]);
|
|
gfor_fndecl_math_powi[rkind][ikind].real =
|
|
gfc_build_library_function_decl (get_identifier (name),
|
|
rtype, 2, rtype, itype);
|
|
TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1;
|
|
}
|
|
|
|
ctype = gfc_get_complex_type (rkinds[rkind]);
|
|
if (ctype && itype)
|
|
{
|
|
sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind],
|
|
ikinds[ikind]);
|
|
gfor_fndecl_math_powi[rkind][ikind].cmplx =
|
|
gfc_build_library_function_decl (get_identifier (name),
|
|
ctype, 2,ctype, itype);
|
|
TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1;
|
|
}
|
|
}
|
|
}
|
|
#undef NIKINDS
|
|
#undef NRKINDS
|
|
}
|
|
|
|
gfor_fndecl_math_ishftc4 =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("ishftc4")),
|
|
gfc_int4_type_node,
|
|
3, gfc_int4_type_node,
|
|
gfc_int4_type_node, gfc_int4_type_node);
|
|
gfor_fndecl_math_ishftc8 =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("ishftc8")),
|
|
gfc_int8_type_node,
|
|
3, gfc_int8_type_node,
|
|
gfc_int4_type_node, gfc_int4_type_node);
|
|
if (gfc_int16_type_node)
|
|
gfor_fndecl_math_ishftc16 =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("ishftc16")),
|
|
gfc_int16_type_node, 3,
|
|
gfc_int16_type_node,
|
|
gfc_int4_type_node,
|
|
gfc_int4_type_node);
|
|
|
|
/* BLAS functions. */
|
|
{
|
|
tree pint = build_pointer_type (integer_type_node);
|
|
tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind));
|
|
tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind));
|
|
tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind));
|
|
tree pz = build_pointer_type
|
|
(gfc_get_complex_type (gfc_default_double_kind));
|
|
|
|
gfor_fndecl_sgemm = gfc_build_library_function_decl
|
|
(get_identifier
|
|
(gfc_option.flag_underscoring ? "sgemm_"
|
|
: "sgemm"),
|
|
void_type_node, 15, pchar_type_node,
|
|
pchar_type_node, pint, pint, pint, ps, ps, pint,
|
|
ps, pint, ps, ps, pint, integer_type_node,
|
|
integer_type_node);
|
|
gfor_fndecl_dgemm = gfc_build_library_function_decl
|
|
(get_identifier
|
|
(gfc_option.flag_underscoring ? "dgemm_"
|
|
: "dgemm"),
|
|
void_type_node, 15, pchar_type_node,
|
|
pchar_type_node, pint, pint, pint, pd, pd, pint,
|
|
pd, pint, pd, pd, pint, integer_type_node,
|
|
integer_type_node);
|
|
gfor_fndecl_cgemm = gfc_build_library_function_decl
|
|
(get_identifier
|
|
(gfc_option.flag_underscoring ? "cgemm_"
|
|
: "cgemm"),
|
|
void_type_node, 15, pchar_type_node,
|
|
pchar_type_node, pint, pint, pint, pc, pc, pint,
|
|
pc, pint, pc, pc, pint, integer_type_node,
|
|
integer_type_node);
|
|
gfor_fndecl_zgemm = gfc_build_library_function_decl
|
|
(get_identifier
|
|
(gfc_option.flag_underscoring ? "zgemm_"
|
|
: "zgemm"),
|
|
void_type_node, 15, pchar_type_node,
|
|
pchar_type_node, pint, pint, pint, pz, pz, pint,
|
|
pz, pint, pz, pz, pint, integer_type_node,
|
|
integer_type_node);
|
|
}
|
|
|
|
/* Other functions. */
|
|
gfor_fndecl_size0 =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("size0")),
|
|
gfc_array_index_type,
|
|
1, pvoid_type_node);
|
|
gfor_fndecl_size1 =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("size1")),
|
|
gfc_array_index_type,
|
|
2, pvoid_type_node,
|
|
gfc_array_index_type);
|
|
|
|
gfor_fndecl_iargc =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX ("iargc")),
|
|
gfc_int4_type_node,
|
|
0);
|
|
|
|
if (gfc_type_for_size (128, true))
|
|
{
|
|
tree uint128 = gfc_type_for_size (128, true);
|
|
|
|
gfor_fndecl_clz128 =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX ("clz128")),
|
|
integer_type_node, 1, uint128);
|
|
|
|
gfor_fndecl_ctz128 =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX ("ctz128")),
|
|
integer_type_node, 1, uint128);
|
|
}
|
|
}
|
|
|
|
|
|
/* Make prototypes for runtime library functions. */
|
|
|
|
void
|
|
gfc_build_builtin_function_decls (void)
|
|
{
|
|
tree gfc_int4_type_node = gfc_get_int_type (4);
|
|
|
|
gfor_fndecl_stop_numeric =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("stop_numeric")),
|
|
void_type_node, 1, gfc_int4_type_node);
|
|
/* Stop doesn't return. */
|
|
TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1;
|
|
|
|
gfor_fndecl_stop_string =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("stop_string")),
|
|
void_type_node, 2, pchar_type_node,
|
|
gfc_int4_type_node);
|
|
/* Stop doesn't return. */
|
|
TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1;
|
|
|
|
gfor_fndecl_error_stop_string =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("error_stop_string")),
|
|
void_type_node, 2, pchar_type_node,
|
|
gfc_int4_type_node);
|
|
/* ERROR STOP doesn't return. */
|
|
TREE_THIS_VOLATILE (gfor_fndecl_error_stop_string) = 1;
|
|
|
|
gfor_fndecl_pause_numeric =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("pause_numeric")),
|
|
void_type_node, 1, gfc_int4_type_node);
|
|
|
|
gfor_fndecl_pause_string =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("pause_string")),
|
|
void_type_node, 2, pchar_type_node,
|
|
gfc_int4_type_node);
|
|
|
|
gfor_fndecl_runtime_error =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("runtime_error")),
|
|
void_type_node, -1, pchar_type_node);
|
|
/* The runtime_error function does not return. */
|
|
TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1;
|
|
|
|
gfor_fndecl_runtime_error_at =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("runtime_error_at")),
|
|
void_type_node, -2, pchar_type_node,
|
|
pchar_type_node);
|
|
/* The runtime_error_at function does not return. */
|
|
TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1;
|
|
|
|
gfor_fndecl_runtime_warning_at =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("runtime_warning_at")),
|
|
void_type_node, -2, pchar_type_node,
|
|
pchar_type_node);
|
|
gfor_fndecl_generate_error =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("generate_error")),
|
|
void_type_node, 3, pvoid_type_node,
|
|
integer_type_node, pchar_type_node);
|
|
|
|
gfor_fndecl_os_error =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("os_error")),
|
|
void_type_node, 1, pchar_type_node);
|
|
/* The runtime_error function does not return. */
|
|
TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1;
|
|
|
|
gfor_fndecl_set_args =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("set_args")),
|
|
void_type_node, 2, integer_type_node,
|
|
build_pointer_type (pchar_type_node));
|
|
|
|
gfor_fndecl_set_fpe =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("set_fpe")),
|
|
void_type_node, 1, integer_type_node);
|
|
|
|
/* Keep the array dimension in sync with the call, later in this file. */
|
|
gfor_fndecl_set_options =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("set_options")),
|
|
void_type_node, 2, integer_type_node,
|
|
build_pointer_type (integer_type_node));
|
|
|
|
gfor_fndecl_set_convert =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("set_convert")),
|
|
void_type_node, 1, integer_type_node);
|
|
|
|
gfor_fndecl_set_record_marker =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("set_record_marker")),
|
|
void_type_node, 1, integer_type_node);
|
|
|
|
gfor_fndecl_set_max_subrecord_length =
|
|
gfc_build_library_function_decl (get_identifier (PREFIX("set_max_subrecord_length")),
|
|
void_type_node, 1, integer_type_node);
|
|
|
|
gfor_fndecl_in_pack = gfc_build_library_function_decl_with_spec (
|
|
get_identifier (PREFIX("internal_pack")), ".r",
|
|
pvoid_type_node, 1, pvoid_type_node);
|
|
|
|
gfor_fndecl_in_unpack = gfc_build_library_function_decl_with_spec (
|
|
get_identifier (PREFIX("internal_unpack")), ".wR",
|
|
void_type_node, 2, pvoid_type_node, pvoid_type_node);
|
|
|
|
gfor_fndecl_associated =
|
|
gfc_build_library_function_decl (
|
|
get_identifier (PREFIX("associated")),
|
|
integer_type_node, 2, ppvoid_type_node,
|
|
ppvoid_type_node);
|
|
|
|
gfc_build_intrinsic_function_decls ();
|
|
gfc_build_intrinsic_lib_fndecls ();
|
|
gfc_build_io_library_fndecls ();
|
|
}
|
|
|
|
|
|
/* Evaluate the length of dummy character variables. */
|
|
|
|
static tree
|
|
gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, tree fnbody)
|
|
{
|
|
stmtblock_t body;
|
|
|
|
gfc_finish_decl (cl->backend_decl);
|
|
|
|
gfc_start_block (&body);
|
|
|
|
/* Evaluate the string length expression. */
|
|
gfc_conv_string_length (cl, NULL, &body);
|
|
|
|
gfc_trans_vla_type_sizes (sym, &body);
|
|
|
|
gfc_add_expr_to_block (&body, fnbody);
|
|
return gfc_finish_block (&body);
|
|
}
|
|
|
|
|
|
/* Allocate and cleanup an automatic character variable. */
|
|
|
|
static tree
|
|
gfc_trans_auto_character_variable (gfc_symbol * sym, tree fnbody)
|
|
{
|
|
stmtblock_t body;
|
|
tree decl;
|
|
tree tmp;
|
|
|
|
gcc_assert (sym->backend_decl);
|
|
gcc_assert (sym->ts.u.cl && sym->ts.u.cl->length);
|
|
|
|
gfc_start_block (&body);
|
|
|
|
/* Evaluate the string length expression. */
|
|
gfc_conv_string_length (sym->ts.u.cl, NULL, &body);
|
|
|
|
gfc_trans_vla_type_sizes (sym, &body);
|
|
|
|
decl = sym->backend_decl;
|
|
|
|
/* Emit a DECL_EXPR for this variable, which will cause the
|
|
gimplifier to allocate storage, and all that good stuff. */
|
|
tmp = fold_build1 (DECL_EXPR, TREE_TYPE (decl), decl);
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
|
|
gfc_add_expr_to_block (&body, fnbody);
|
|
return gfc_finish_block (&body);
|
|
}
|
|
|
|
/* Set the initial value of ASSIGN statement auxiliary variable explicitly. */
|
|
|
|
static tree
|
|
gfc_trans_assign_aux_var (gfc_symbol * sym, tree fnbody)
|
|
{
|
|
stmtblock_t body;
|
|
|
|
gcc_assert (sym->backend_decl);
|
|
gfc_start_block (&body);
|
|
|
|
/* Set the initial value to length. See the comments in
|
|
function gfc_add_assign_aux_vars in this file. */
|
|
gfc_add_modify (&body, GFC_DECL_STRING_LEN (sym->backend_decl),
|
|
build_int_cst (NULL_TREE, -2));
|
|
|
|
gfc_add_expr_to_block (&body, fnbody);
|
|
return gfc_finish_block (&body);
|
|
}
|
|
|
|
static void
|
|
gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body)
|
|
{
|
|
tree t = *tp, var, val;
|
|
|
|
if (t == NULL || t == error_mark_node)
|
|
return;
|
|
if (TREE_CONSTANT (t) || DECL_P (t))
|
|
return;
|
|
|
|
if (TREE_CODE (t) == SAVE_EXPR)
|
|
{
|
|
if (SAVE_EXPR_RESOLVED_P (t))
|
|
{
|
|
*tp = TREE_OPERAND (t, 0);
|
|
return;
|
|
}
|
|
val = TREE_OPERAND (t, 0);
|
|
}
|
|
else
|
|
val = t;
|
|
|
|
var = gfc_create_var_np (TREE_TYPE (t), NULL);
|
|
gfc_add_decl_to_function (var);
|
|
gfc_add_modify (body, var, val);
|
|
if (TREE_CODE (t) == SAVE_EXPR)
|
|
TREE_OPERAND (t, 0) = var;
|
|
*tp = var;
|
|
}
|
|
|
|
static void
|
|
gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body)
|
|
{
|
|
tree t;
|
|
|
|
if (type == NULL || type == error_mark_node)
|
|
return;
|
|
|
|
type = TYPE_MAIN_VARIANT (type);
|
|
|
|
if (TREE_CODE (type) == INTEGER_TYPE)
|
|
{
|
|
gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body);
|
|
gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body);
|
|
|
|
for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t))
|
|
{
|
|
TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type);
|
|
TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type);
|
|
}
|
|
}
|
|
else if (TREE_CODE (type) == ARRAY_TYPE)
|
|
{
|
|
gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body);
|
|
gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body);
|
|
gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body);
|
|
gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body);
|
|
|
|
for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t))
|
|
{
|
|
TYPE_SIZE (t) = TYPE_SIZE (type);
|
|
TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Make sure all type sizes and array domains are either constant,
|
|
or variable or parameter decls. This is a simplified variant
|
|
of gimplify_type_sizes, but we can't use it here, as none of the
|
|
variables in the expressions have been gimplified yet.
|
|
As type sizes and domains for various variable length arrays
|
|
contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars
|
|
time, without this routine gimplify_type_sizes in the middle-end
|
|
could result in the type sizes being gimplified earlier than where
|
|
those variables are initialized. */
|
|
|
|
void
|
|
gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body)
|
|
{
|
|
tree type = TREE_TYPE (sym->backend_decl);
|
|
|
|
if (TREE_CODE (type) == FUNCTION_TYPE
|
|
&& (sym->attr.function || sym->attr.result || sym->attr.entry))
|
|
{
|
|
if (! current_fake_result_decl)
|
|
return;
|
|
|
|
type = TREE_TYPE (TREE_VALUE (current_fake_result_decl));
|
|
}
|
|
|
|
while (POINTER_TYPE_P (type))
|
|
type = TREE_TYPE (type);
|
|
|
|
if (GFC_DESCRIPTOR_TYPE_P (type))
|
|
{
|
|
tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type);
|
|
|
|
while (POINTER_TYPE_P (etype))
|
|
etype = TREE_TYPE (etype);
|
|
|
|
gfc_trans_vla_type_sizes_1 (etype, body);
|
|
}
|
|
|
|
gfc_trans_vla_type_sizes_1 (type, body);
|
|
}
|
|
|
|
|
|
/* Initialize a derived type by building an lvalue from the symbol
|
|
and using trans_assignment to do the work. Set dealloc to false
|
|
if no deallocation prior the assignment is needed. */
|
|
tree
|
|
gfc_init_default_dt (gfc_symbol * sym, tree body, bool dealloc)
|
|
{
|
|
stmtblock_t fnblock;
|
|
gfc_expr *e;
|
|
tree tmp;
|
|
tree present;
|
|
|
|
gfc_init_block (&fnblock);
|
|
gcc_assert (!sym->attr.allocatable);
|
|
gfc_set_sym_referenced (sym);
|
|
e = gfc_lval_expr_from_sym (sym);
|
|
tmp = gfc_trans_assignment (e, sym->value, false, dealloc);
|
|
if (sym->attr.dummy && (sym->attr.optional
|
|
|| sym->ns->proc_name->attr.entry_master))
|
|
{
|
|
present = gfc_conv_expr_present (sym);
|
|
tmp = build3 (COND_EXPR, TREE_TYPE (tmp), present,
|
|
tmp, build_empty_stmt (input_location));
|
|
}
|
|
gfc_add_expr_to_block (&fnblock, tmp);
|
|
gfc_free_expr (e);
|
|
if (body)
|
|
gfc_add_expr_to_block (&fnblock, body);
|
|
return gfc_finish_block (&fnblock);
|
|
}
|
|
|
|
|
|
/* Initialize INTENT(OUT) derived type dummies. As well as giving
|
|
them their default initializer, if they do not have allocatable
|
|
components, they have their allocatable components deallocated. */
|
|
|
|
static tree
|
|
init_intent_out_dt (gfc_symbol * proc_sym, tree body)
|
|
{
|
|
stmtblock_t fnblock;
|
|
gfc_formal_arglist *f;
|
|
tree tmp;
|
|
tree present;
|
|
|
|
gfc_init_block (&fnblock);
|
|
for (f = proc_sym->formal; f; f = f->next)
|
|
if (f->sym && f->sym->attr.intent == INTENT_OUT
|
|
&& !f->sym->attr.pointer
|
|
&& f->sym->ts.type == BT_DERIVED)
|
|
{
|
|
if (f->sym->ts.u.derived->attr.alloc_comp && !f->sym->value)
|
|
{
|
|
tmp = gfc_deallocate_alloc_comp (f->sym->ts.u.derived,
|
|
f->sym->backend_decl,
|
|
f->sym->as ? f->sym->as->rank : 0);
|
|
|
|
if (f->sym->attr.optional
|
|
|| f->sym->ns->proc_name->attr.entry_master)
|
|
{
|
|
present = gfc_conv_expr_present (f->sym);
|
|
tmp = build3 (COND_EXPR, TREE_TYPE (tmp), present,
|
|
tmp, build_empty_stmt (input_location));
|
|
}
|
|
|
|
gfc_add_expr_to_block (&fnblock, tmp);
|
|
}
|
|
else if (f->sym->value)
|
|
body = gfc_init_default_dt (f->sym, body, true);
|
|
}
|
|
|
|
gfc_add_expr_to_block (&fnblock, body);
|
|
return gfc_finish_block (&fnblock);
|
|
}
|
|
|
|
|
|
/* Generate function entry and exit code, and add it to the function body.
|
|
This includes:
|
|
Allocation and initialization of array variables.
|
|
Allocation of character string variables.
|
|
Initialization and possibly repacking of dummy arrays.
|
|
Initialization of ASSIGN statement auxiliary variable.
|
|
Automatic deallocation. */
|
|
|
|
tree
|
|
gfc_trans_deferred_vars (gfc_symbol * proc_sym, tree fnbody)
|
|
{
|
|
locus loc;
|
|
gfc_symbol *sym;
|
|
gfc_formal_arglist *f;
|
|
stmtblock_t body;
|
|
bool seen_trans_deferred_array = false;
|
|
|
|
/* Deal with implicit return variables. Explicit return variables will
|
|
already have been added. */
|
|
if (gfc_return_by_reference (proc_sym) && proc_sym->result == proc_sym)
|
|
{
|
|
if (!current_fake_result_decl)
|
|
{
|
|
gfc_entry_list *el = NULL;
|
|
if (proc_sym->attr.entry_master)
|
|
{
|
|
for (el = proc_sym->ns->entries; el; el = el->next)
|
|
if (el->sym != el->sym->result)
|
|
break;
|
|
}
|
|
/* TODO: move to the appropriate place in resolve.c. */
|
|
if (warn_return_type && el == NULL)
|
|
gfc_warning ("Return value of function '%s' at %L not set",
|
|
proc_sym->name, &proc_sym->declared_at);
|
|
}
|
|
else if (proc_sym->as)
|
|
{
|
|
tree result = TREE_VALUE (current_fake_result_decl);
|
|
fnbody = gfc_trans_dummy_array_bias (proc_sym, result, fnbody);
|
|
|
|
/* An automatic character length, pointer array result. */
|
|
if (proc_sym->ts.type == BT_CHARACTER
|
|
&& TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL)
|
|
fnbody = gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl,
|
|
fnbody);
|
|
}
|
|
else if (proc_sym->ts.type == BT_CHARACTER)
|
|
{
|
|
if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == VAR_DECL)
|
|
fnbody = gfc_trans_dummy_character (proc_sym, proc_sym->ts.u.cl,
|
|
fnbody);
|
|
}
|
|
else
|
|
gcc_assert (gfc_option.flag_f2c
|
|
&& proc_sym->ts.type == BT_COMPLEX);
|
|
}
|
|
|
|
/* Initialize the INTENT(OUT) derived type dummy arguments. This
|
|
should be done here so that the offsets and lbounds of arrays
|
|
are available. */
|
|
fnbody = init_intent_out_dt (proc_sym, fnbody);
|
|
|
|
for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink)
|
|
{
|
|
bool sym_has_alloc_comp = (sym->ts.type == BT_DERIVED)
|
|
&& sym->ts.u.derived->attr.alloc_comp;
|
|
if (sym->attr.dimension)
|
|
{
|
|
switch (sym->as->type)
|
|
{
|
|
case AS_EXPLICIT:
|
|
if (sym->attr.dummy || sym->attr.result)
|
|
fnbody =
|
|
gfc_trans_dummy_array_bias (sym, sym->backend_decl, fnbody);
|
|
else if (sym->attr.pointer || sym->attr.allocatable)
|
|
{
|
|
if (TREE_STATIC (sym->backend_decl))
|
|
gfc_trans_static_array_pointer (sym);
|
|
else
|
|
{
|
|
seen_trans_deferred_array = true;
|
|
fnbody = gfc_trans_deferred_array (sym, fnbody);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (sym_has_alloc_comp)
|
|
{
|
|
seen_trans_deferred_array = true;
|
|
fnbody = gfc_trans_deferred_array (sym, fnbody);
|
|
}
|
|
else if (sym->ts.type == BT_DERIVED
|
|
&& sym->value
|
|
&& !sym->attr.data
|
|
&& sym->attr.save == SAVE_NONE)
|
|
fnbody = gfc_init_default_dt (sym, fnbody, false);
|
|
|
|
gfc_get_backend_locus (&loc);
|
|
gfc_set_backend_locus (&sym->declared_at);
|
|
fnbody = gfc_trans_auto_array_allocation (sym->backend_decl,
|
|
sym, fnbody);
|
|
gfc_set_backend_locus (&loc);
|
|
}
|
|
break;
|
|
|
|
case AS_ASSUMED_SIZE:
|
|
/* Must be a dummy parameter. */
|
|
gcc_assert (sym->attr.dummy || sym->as->cp_was_assumed);
|
|
|
|
/* We should always pass assumed size arrays the g77 way. */
|
|
if (sym->attr.dummy)
|
|
fnbody = gfc_trans_g77_array (sym, fnbody);
|
|
break;
|
|
|
|
case AS_ASSUMED_SHAPE:
|
|
/* Must be a dummy parameter. */
|
|
gcc_assert (sym->attr.dummy);
|
|
|
|
fnbody = gfc_trans_dummy_array_bias (sym, sym->backend_decl,
|
|
fnbody);
|
|
break;
|
|
|
|
case AS_DEFERRED:
|
|
seen_trans_deferred_array = true;
|
|
fnbody = gfc_trans_deferred_array (sym, fnbody);
|
|
break;
|
|
|
|
default:
|
|
gcc_unreachable ();
|
|
}
|
|
if (sym_has_alloc_comp && !seen_trans_deferred_array)
|
|
fnbody = gfc_trans_deferred_array (sym, fnbody);
|
|
}
|
|
else if (sym_has_alloc_comp)
|
|
fnbody = gfc_trans_deferred_array (sym, fnbody);
|
|
else if (sym->attr.allocatable
|
|
|| (sym->ts.type == BT_CLASS
|
|
&& sym->ts.u.derived->components->attr.allocatable))
|
|
{
|
|
if (!sym->attr.save)
|
|
{
|
|
/* Nullify and automatic deallocation of allocatable
|
|
scalars. */
|
|
tree tmp;
|
|
gfc_expr *e;
|
|
gfc_se se;
|
|
stmtblock_t block;
|
|
|
|
e = gfc_lval_expr_from_sym (sym);
|
|
if (sym->ts.type == BT_CLASS)
|
|
gfc_add_component_ref (e, "$data");
|
|
|
|
gfc_init_se (&se, NULL);
|
|
se.want_pointer = 1;
|
|
gfc_conv_expr (&se, e);
|
|
gfc_free_expr (e);
|
|
|
|
/* Nullify when entering the scope. */
|
|
gfc_start_block (&block);
|
|
gfc_add_modify (&block, se.expr,
|
|
fold_convert (TREE_TYPE (se.expr),
|
|
null_pointer_node));
|
|
gfc_add_expr_to_block (&block, fnbody);
|
|
|
|
/* Deallocate when leaving the scope. Nullifying is not
|
|
needed. */
|
|
tmp = gfc_deallocate_with_status (se.expr, NULL_TREE, true,
|
|
NULL);
|
|
gfc_add_expr_to_block (&block, tmp);
|
|
fnbody = gfc_finish_block (&block);
|
|
}
|
|
}
|
|
else if (sym->ts.type == BT_CHARACTER)
|
|
{
|
|
gfc_get_backend_locus (&loc);
|
|
gfc_set_backend_locus (&sym->declared_at);
|
|
if (sym->attr.dummy || sym->attr.result)
|
|
fnbody = gfc_trans_dummy_character (sym, sym->ts.u.cl, fnbody);
|
|
else
|
|
fnbody = gfc_trans_auto_character_variable (sym, fnbody);
|
|
gfc_set_backend_locus (&loc);
|
|
}
|
|
else if (sym->attr.assign)
|
|
{
|
|
gfc_get_backend_locus (&loc);
|
|
gfc_set_backend_locus (&sym->declared_at);
|
|
fnbody = gfc_trans_assign_aux_var (sym, fnbody);
|
|
gfc_set_backend_locus (&loc);
|
|
}
|
|
else if (sym->ts.type == BT_DERIVED
|
|
&& sym->value
|
|
&& !sym->attr.data
|
|
&& sym->attr.save == SAVE_NONE)
|
|
fnbody = gfc_init_default_dt (sym, fnbody, false);
|
|
else
|
|
gcc_unreachable ();
|
|
}
|
|
|
|
gfc_init_block (&body);
|
|
|
|
for (f = proc_sym->formal; f; f = f->next)
|
|
{
|
|
if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER)
|
|
{
|
|
gcc_assert (f->sym->ts.u.cl->backend_decl != NULL);
|
|
if (TREE_CODE (f->sym->ts.u.cl->backend_decl) == PARM_DECL)
|
|
gfc_trans_vla_type_sizes (f->sym, &body);
|
|
}
|
|
}
|
|
|
|
if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER
|
|
&& current_fake_result_decl != NULL)
|
|
{
|
|
gcc_assert (proc_sym->ts.u.cl->backend_decl != NULL);
|
|
if (TREE_CODE (proc_sym->ts.u.cl->backend_decl) == PARM_DECL)
|
|
gfc_trans_vla_type_sizes (proc_sym, &body);
|
|
}
|
|
|
|
gfc_add_expr_to_block (&body, fnbody);
|
|
return gfc_finish_block (&body);
|
|
}
|
|
|
|
static GTY ((param_is (struct module_htab_entry))) htab_t module_htab;
|
|
|
|
/* Hash and equality functions for module_htab. */
|
|
|
|
static hashval_t
|
|
module_htab_do_hash (const void *x)
|
|
{
|
|
return htab_hash_string (((const struct module_htab_entry *)x)->name);
|
|
}
|
|
|
|
static int
|
|
module_htab_eq (const void *x1, const void *x2)
|
|
{
|
|
return strcmp ((((const struct module_htab_entry *)x1)->name),
|
|
(const char *)x2) == 0;
|
|
}
|
|
|
|
/* Hash and equality functions for module_htab's decls. */
|
|
|
|
static hashval_t
|
|
module_htab_decls_hash (const void *x)
|
|
{
|
|
const_tree t = (const_tree) x;
|
|
const_tree n = DECL_NAME (t);
|
|
if (n == NULL_TREE)
|
|
n = TYPE_NAME (TREE_TYPE (t));
|
|
return htab_hash_string (IDENTIFIER_POINTER (n));
|
|
}
|
|
|
|
static int
|
|
module_htab_decls_eq (const void *x1, const void *x2)
|
|
{
|
|
const_tree t1 = (const_tree) x1;
|
|
const_tree n1 = DECL_NAME (t1);
|
|
if (n1 == NULL_TREE)
|
|
n1 = TYPE_NAME (TREE_TYPE (t1));
|
|
return strcmp (IDENTIFIER_POINTER (n1), (const char *) x2) == 0;
|
|
}
|
|
|
|
struct module_htab_entry *
|
|
gfc_find_module (const char *name)
|
|
{
|
|
void **slot;
|
|
|
|
if (! module_htab)
|
|
module_htab = htab_create_ggc (10, module_htab_do_hash,
|
|
module_htab_eq, NULL);
|
|
|
|
slot = htab_find_slot_with_hash (module_htab, name,
|
|
htab_hash_string (name), INSERT);
|
|
if (*slot == NULL)
|
|
{
|
|
struct module_htab_entry *entry = GGC_CNEW (struct module_htab_entry);
|
|
|
|
entry->name = gfc_get_string (name);
|
|
entry->decls = htab_create_ggc (10, module_htab_decls_hash,
|
|
module_htab_decls_eq, NULL);
|
|
*slot = (void *) entry;
|
|
}
|
|
return (struct module_htab_entry *) *slot;
|
|
}
|
|
|
|
void
|
|
gfc_module_add_decl (struct module_htab_entry *entry, tree decl)
|
|
{
|
|
void **slot;
|
|
const char *name;
|
|
|
|
if (DECL_NAME (decl))
|
|
name = IDENTIFIER_POINTER (DECL_NAME (decl));
|
|
else
|
|
{
|
|
gcc_assert (TREE_CODE (decl) == TYPE_DECL);
|
|
name = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl)));
|
|
}
|
|
slot = htab_find_slot_with_hash (entry->decls, name,
|
|
htab_hash_string (name), INSERT);
|
|
if (*slot == NULL)
|
|
*slot = (void *) decl;
|
|
}
|
|
|
|
static struct module_htab_entry *cur_module;
|
|
|
|
/* Output an initialized decl for a module variable. */
|
|
|
|
static void
|
|
gfc_create_module_variable (gfc_symbol * sym)
|
|
{
|
|
tree decl;
|
|
|
|
/* Module functions with alternate entries are dealt with later and
|
|
would get caught by the next condition. */
|
|
if (sym->attr.entry)
|
|
return;
|
|
|
|
/* Make sure we convert the types of the derived types from iso_c_binding
|
|
into (void *). */
|
|
if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c
|
|
&& sym->ts.type == BT_DERIVED)
|
|
sym->backend_decl = gfc_typenode_for_spec (&(sym->ts));
|
|
|
|
if (sym->attr.flavor == FL_DERIVED
|
|
&& sym->backend_decl
|
|
&& TREE_CODE (sym->backend_decl) == RECORD_TYPE)
|
|
{
|
|
decl = sym->backend_decl;
|
|
gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE);
|
|
|
|
/* -fwhole-file mixes up the contexts so these asserts are unnecessary. */
|
|
if (!(gfc_option.flag_whole_file && sym->attr.use_assoc))
|
|
{
|
|
gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE
|
|
|| TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl);
|
|
gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE
|
|
|| DECL_CONTEXT (TYPE_STUB_DECL (decl))
|
|
== sym->ns->proc_name->backend_decl);
|
|
}
|
|
TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl;
|
|
DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl;
|
|
gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl));
|
|
}
|
|
|
|
/* Only output variables, procedure pointers and array valued,
|
|
or derived type, parameters. */
|
|
if (sym->attr.flavor != FL_VARIABLE
|
|
&& !(sym->attr.flavor == FL_PARAMETER
|
|
&& (sym->attr.dimension || sym->ts.type == BT_DERIVED))
|
|
&& !(sym->attr.flavor == FL_PROCEDURE && sym->attr.proc_pointer))
|
|
return;
|
|
|
|
if ((sym->attr.in_common || sym->attr.in_equivalence) && sym->backend_decl)
|
|
{
|
|
decl = sym->backend_decl;
|
|
gcc_assert (DECL_CONTEXT (decl) == NULL_TREE);
|
|
gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE);
|
|
DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl;
|
|
gfc_module_add_decl (cur_module, decl);
|
|
}
|
|
|
|
/* Don't generate variables from other modules. Variables from
|
|
COMMONs will already have been generated. */
|
|
if (sym->attr.use_assoc || sym->attr.in_common)
|
|
return;
|
|
|
|
/* Equivalenced variables arrive here after creation. */
|
|
if (sym->backend_decl
|
|
&& (sym->equiv_built || sym->attr.in_equivalence))
|
|
return;
|
|
|
|
if (sym->backend_decl && !sym->attr.vtab)
|
|
internal_error ("backend decl for module variable %s already exists",
|
|
sym->name);
|
|
|
|
/* We always want module variables to be created. */
|
|
sym->attr.referenced = 1;
|
|
/* Create the decl. */
|
|
decl = gfc_get_symbol_decl (sym);
|
|
|
|
/* Create the variable. */
|
|
pushdecl (decl);
|
|
gcc_assert (DECL_CONTEXT (decl) == NULL_TREE);
|
|
gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE);
|
|
DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl;
|
|
rest_of_decl_compilation (decl, 1, 0);
|
|
gfc_module_add_decl (cur_module, decl);
|
|
|
|
/* Also add length of strings. */
|
|
if (sym->ts.type == BT_CHARACTER)
|
|
{
|
|
tree length;
|
|
|
|
length = sym->ts.u.cl->backend_decl;
|
|
gcc_assert (length || sym->attr.proc_pointer);
|
|
if (length && !INTEGER_CST_P (length))
|
|
{
|
|
pushdecl (length);
|
|
rest_of_decl_compilation (length, 1, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Emit debug information for USE statements. */
|
|
|
|
static void
|
|
gfc_trans_use_stmts (gfc_namespace * ns)
|
|
{
|
|
gfc_use_list *use_stmt;
|
|
for (use_stmt = ns->use_stmts; use_stmt; use_stmt = use_stmt->next)
|
|
{
|
|
struct module_htab_entry *entry
|
|
= gfc_find_module (use_stmt->module_name);
|
|
gfc_use_rename *rent;
|
|
|
|
if (entry->namespace_decl == NULL)
|
|
{
|
|
entry->namespace_decl
|
|
= build_decl (input_location,
|
|
NAMESPACE_DECL,
|
|
get_identifier (use_stmt->module_name),
|
|
void_type_node);
|
|
DECL_EXTERNAL (entry->namespace_decl) = 1;
|
|
}
|
|
gfc_set_backend_locus (&use_stmt->where);
|
|
if (!use_stmt->only_flag)
|
|
(*debug_hooks->imported_module_or_decl) (entry->namespace_decl,
|
|
NULL_TREE,
|
|
ns->proc_name->backend_decl,
|
|
false);
|
|
for (rent = use_stmt->rename; rent; rent = rent->next)
|
|
{
|
|
tree decl, local_name;
|
|
void **slot;
|
|
|
|
if (rent->op != INTRINSIC_NONE)
|
|
continue;
|
|
|
|
slot = htab_find_slot_with_hash (entry->decls, rent->use_name,
|
|
htab_hash_string (rent->use_name),
|
|
INSERT);
|
|
if (*slot == NULL)
|
|
{
|
|
gfc_symtree *st;
|
|
|
|
st = gfc_find_symtree (ns->sym_root,
|
|
rent->local_name[0]
|
|
? rent->local_name : rent->use_name);
|
|
gcc_assert (st);
|
|
|
|
/* Sometimes, generic interfaces wind up being over-ruled by a
|
|
local symbol (see PR41062). */
|
|
if (!st->n.sym->attr.use_assoc)
|
|
continue;
|
|
|
|
if (st->n.sym->backend_decl
|
|
&& DECL_P (st->n.sym->backend_decl)
|
|
&& st->n.sym->module
|
|
&& strcmp (st->n.sym->module, use_stmt->module_name) == 0)
|
|
{
|
|
gcc_assert (DECL_EXTERNAL (entry->namespace_decl)
|
|
|| (TREE_CODE (st->n.sym->backend_decl)
|
|
!= VAR_DECL));
|
|
decl = copy_node (st->n.sym->backend_decl);
|
|
DECL_CONTEXT (decl) = entry->namespace_decl;
|
|
DECL_EXTERNAL (decl) = 1;
|
|
DECL_IGNORED_P (decl) = 0;
|
|
DECL_INITIAL (decl) = NULL_TREE;
|
|
}
|
|
else
|
|
{
|
|
*slot = error_mark_node;
|
|
htab_clear_slot (entry->decls, slot);
|
|
continue;
|
|
}
|
|
*slot = decl;
|
|
}
|
|
decl = (tree) *slot;
|
|
if (rent->local_name[0])
|
|
local_name = get_identifier (rent->local_name);
|
|
else
|
|
local_name = NULL_TREE;
|
|
gfc_set_backend_locus (&rent->where);
|
|
(*debug_hooks->imported_module_or_decl) (decl, local_name,
|
|
ns->proc_name->backend_decl,
|
|
!use_stmt->only_flag);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* Return true if expr is a constant initializer that gfc_conv_initializer
|
|
will handle. */
|
|
|
|
static bool
|
|
check_constant_initializer (gfc_expr *expr, gfc_typespec *ts, bool array,
|
|
bool pointer)
|
|
{
|
|
gfc_constructor *c;
|
|
gfc_component *cm;
|
|
|
|
if (pointer)
|
|
return true;
|
|
else if (array)
|
|
{
|
|
if (expr->expr_type == EXPR_CONSTANT || expr->expr_type == EXPR_NULL)
|
|
return true;
|
|
else if (expr->expr_type == EXPR_STRUCTURE)
|
|
return check_constant_initializer (expr, ts, false, false);
|
|
else if (expr->expr_type != EXPR_ARRAY)
|
|
return false;
|
|
for (c = gfc_constructor_first (expr->value.constructor);
|
|
c; c = gfc_constructor_next (c))
|
|
{
|
|
if (c->iterator)
|
|
return false;
|
|
if (c->expr->expr_type == EXPR_STRUCTURE)
|
|
{
|
|
if (!check_constant_initializer (c->expr, ts, false, false))
|
|
return false;
|
|
}
|
|
else if (c->expr->expr_type != EXPR_CONSTANT)
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
else switch (ts->type)
|
|
{
|
|
case BT_DERIVED:
|
|
if (expr->expr_type != EXPR_STRUCTURE)
|
|
return false;
|
|
cm = expr->ts.u.derived->components;
|
|
for (c = gfc_constructor_first (expr->value.constructor);
|
|
c; c = gfc_constructor_next (c), cm = cm->next)
|
|
{
|
|
if (!c->expr || cm->attr.allocatable)
|
|
continue;
|
|
if (!check_constant_initializer (c->expr, &cm->ts,
|
|
cm->attr.dimension,
|
|
cm->attr.pointer))
|
|
return false;
|
|
}
|
|
return true;
|
|
default:
|
|
return expr->expr_type == EXPR_CONSTANT;
|
|
}
|
|
}
|
|
|
|
/* Emit debug info for parameters and unreferenced variables with
|
|
initializers. */
|
|
|
|
static void
|
|
gfc_emit_parameter_debug_info (gfc_symbol *sym)
|
|
{
|
|
tree decl;
|
|
|
|
if (sym->attr.flavor != FL_PARAMETER
|
|
&& (sym->attr.flavor != FL_VARIABLE || sym->attr.referenced))
|
|
return;
|
|
|
|
if (sym->backend_decl != NULL
|
|
|| sym->value == NULL
|
|
|| sym->attr.use_assoc
|
|
|| sym->attr.dummy
|
|
|| sym->attr.result
|
|
|| sym->attr.function
|
|
|| sym->attr.intrinsic
|
|
|| sym->attr.pointer
|
|
|| sym->attr.allocatable
|
|
|| sym->attr.cray_pointee
|
|
|| sym->attr.threadprivate
|
|
|| sym->attr.is_bind_c
|
|
|| sym->attr.subref_array_pointer
|
|
|| sym->attr.assign)
|
|
return;
|
|
|
|
if (sym->ts.type == BT_CHARACTER)
|
|
{
|
|
gfc_conv_const_charlen (sym->ts.u.cl);
|
|
if (sym->ts.u.cl->backend_decl == NULL
|
|
|| TREE_CODE (sym->ts.u.cl->backend_decl) != INTEGER_CST)
|
|
return;
|
|
}
|
|
else if (sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.alloc_comp)
|
|
return;
|
|
|
|
if (sym->as)
|
|
{
|
|
int n;
|
|
|
|
if (sym->as->type != AS_EXPLICIT)
|
|
return;
|
|
for (n = 0; n < sym->as->rank; n++)
|
|
if (sym->as->lower[n]->expr_type != EXPR_CONSTANT
|
|
|| sym->as->upper[n] == NULL
|
|
|| sym->as->upper[n]->expr_type != EXPR_CONSTANT)
|
|
return;
|
|
}
|
|
|
|
if (!check_constant_initializer (sym->value, &sym->ts,
|
|
sym->attr.dimension, false))
|
|
return;
|
|
|
|
/* Create the decl for the variable or constant. */
|
|
decl = build_decl (input_location,
|
|
sym->attr.flavor == FL_PARAMETER ? CONST_DECL : VAR_DECL,
|
|
gfc_sym_identifier (sym), gfc_sym_type (sym));
|
|
if (sym->attr.flavor == FL_PARAMETER)
|
|
TREE_READONLY (decl) = 1;
|
|
gfc_set_decl_location (decl, &sym->declared_at);
|
|
if (sym->attr.dimension)
|
|
GFC_DECL_PACKED_ARRAY (decl) = 1;
|
|
DECL_CONTEXT (decl) = sym->ns->proc_name->backend_decl;
|
|
TREE_STATIC (decl) = 1;
|
|
TREE_USED (decl) = 1;
|
|
if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL)
|
|
TREE_PUBLIC (decl) = 1;
|
|
DECL_INITIAL (decl)
|
|
= gfc_conv_initializer (sym->value, &sym->ts, TREE_TYPE (decl),
|
|
sym->attr.dimension, 0);
|
|
debug_hooks->global_decl (decl);
|
|
}
|
|
|
|
/* Generate all the required code for module variables. */
|
|
|
|
void
|
|
gfc_generate_module_vars (gfc_namespace * ns)
|
|
{
|
|
module_namespace = ns;
|
|
cur_module = gfc_find_module (ns->proc_name->name);
|
|
|
|
/* Check if the frontend left the namespace in a reasonable state. */
|
|
gcc_assert (ns->proc_name && !ns->proc_name->tlink);
|
|
|
|
/* Generate COMMON blocks. */
|
|
gfc_trans_common (ns);
|
|
|
|
/* Create decls for all the module variables. */
|
|
gfc_traverse_ns (ns, gfc_create_module_variable);
|
|
|
|
cur_module = NULL;
|
|
|
|
gfc_trans_use_stmts (ns);
|
|
gfc_traverse_ns (ns, gfc_emit_parameter_debug_info);
|
|
}
|
|
|
|
|
|
static void
|
|
gfc_generate_contained_functions (gfc_namespace * parent)
|
|
{
|
|
gfc_namespace *ns;
|
|
|
|
/* We create all the prototypes before generating any code. */
|
|
for (ns = parent->contained; ns; ns = ns->sibling)
|
|
{
|
|
/* Skip namespaces from used modules. */
|
|
if (ns->parent != parent)
|
|
continue;
|
|
|
|
gfc_create_function_decl (ns);
|
|
}
|
|
|
|
for (ns = parent->contained; ns; ns = ns->sibling)
|
|
{
|
|
/* Skip namespaces from used modules. */
|
|
if (ns->parent != parent)
|
|
continue;
|
|
|
|
gfc_generate_function_code (ns);
|
|
}
|
|
}
|
|
|
|
|
|
/* Drill down through expressions for the array specification bounds and
|
|
character length calling generate_local_decl for all those variables
|
|
that have not already been declared. */
|
|
|
|
static void
|
|
generate_local_decl (gfc_symbol *);
|
|
|
|
/* Traverse expr, marking all EXPR_VARIABLE symbols referenced. */
|
|
|
|
static bool
|
|
expr_decls (gfc_expr *e, gfc_symbol *sym,
|
|
int *f ATTRIBUTE_UNUSED)
|
|
{
|
|
if (e->expr_type != EXPR_VARIABLE
|
|
|| sym == e->symtree->n.sym
|
|
|| e->symtree->n.sym->mark
|
|
|| e->symtree->n.sym->ns != sym->ns)
|
|
return false;
|
|
|
|
generate_local_decl (e->symtree->n.sym);
|
|
return false;
|
|
}
|
|
|
|
static void
|
|
generate_expr_decls (gfc_symbol *sym, gfc_expr *e)
|
|
{
|
|
gfc_traverse_expr (e, sym, expr_decls, 0);
|
|
}
|
|
|
|
|
|
/* Check for dependencies in the character length and array spec. */
|
|
|
|
static void
|
|
generate_dependency_declarations (gfc_symbol *sym)
|
|
{
|
|
int i;
|
|
|
|
if (sym->ts.type == BT_CHARACTER
|
|
&& sym->ts.u.cl
|
|
&& sym->ts.u.cl->length
|
|
&& sym->ts.u.cl->length->expr_type != EXPR_CONSTANT)
|
|
generate_expr_decls (sym, sym->ts.u.cl->length);
|
|
|
|
if (sym->as && sym->as->rank)
|
|
{
|
|
for (i = 0; i < sym->as->rank; i++)
|
|
{
|
|
generate_expr_decls (sym, sym->as->lower[i]);
|
|
generate_expr_decls (sym, sym->as->upper[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* Generate decls for all local variables. We do this to ensure correct
|
|
handling of expressions which only appear in the specification of
|
|
other functions. */
|
|
|
|
static void
|
|
generate_local_decl (gfc_symbol * sym)
|
|
{
|
|
if (sym->attr.flavor == FL_VARIABLE)
|
|
{
|
|
if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master)
|
|
generate_dependency_declarations (sym);
|
|
|
|
if (sym->attr.referenced)
|
|
gfc_get_symbol_decl (sym);
|
|
/* INTENT(out) dummy arguments are likely meant to be set. */
|
|
else if (warn_unused_variable
|
|
&& sym->attr.dummy
|
|
&& sym->attr.intent == INTENT_OUT)
|
|
{
|
|
if (!(sym->ts.type == BT_DERIVED
|
|
&& sym->ts.u.derived->components->initializer))
|
|
gfc_warning ("Dummy argument '%s' at %L was declared INTENT(OUT) "
|
|
"but was not set", sym->name, &sym->declared_at);
|
|
}
|
|
/* Specific warning for unused dummy arguments. */
|
|
else if (warn_unused_variable && sym->attr.dummy)
|
|
gfc_warning ("Unused dummy argument '%s' at %L", sym->name,
|
|
&sym->declared_at);
|
|
/* Warn for unused variables, but not if they're inside a common
|
|
block or are use-associated. */
|
|
else if (warn_unused_variable
|
|
&& !(sym->attr.in_common || sym->attr.use_assoc || sym->mark))
|
|
gfc_warning ("Unused variable '%s' declared at %L", sym->name,
|
|
&sym->declared_at);
|
|
|
|
/* For variable length CHARACTER parameters, the PARM_DECL already
|
|
references the length variable, so force gfc_get_symbol_decl
|
|
even when not referenced. If optimize > 0, it will be optimized
|
|
away anyway. But do this only after emitting -Wunused-parameter
|
|
warning if requested. */
|
|
if (sym->attr.dummy && !sym->attr.referenced
|
|
&& sym->ts.type == BT_CHARACTER
|
|
&& sym->ts.u.cl->backend_decl != NULL
|
|
&& TREE_CODE (sym->ts.u.cl->backend_decl) == VAR_DECL)
|
|
{
|
|
sym->attr.referenced = 1;
|
|
gfc_get_symbol_decl (sym);
|
|
}
|
|
|
|
/* INTENT(out) dummy arguments and result variables with allocatable
|
|
components are reset by default and need to be set referenced to
|
|
generate the code for nullification and automatic lengths. */
|
|
if (!sym->attr.referenced
|
|
&& sym->ts.type == BT_DERIVED
|
|
&& sym->ts.u.derived->attr.alloc_comp
|
|
&& !sym->attr.pointer
|
|
&& ((sym->attr.dummy && sym->attr.intent == INTENT_OUT)
|
|
||
|
|
(sym->attr.result && sym != sym->result)))
|
|
{
|
|
sym->attr.referenced = 1;
|
|
gfc_get_symbol_decl (sym);
|
|
}
|
|
|
|
/* Check for dependencies in the array specification and string
|
|
length, adding the necessary declarations to the function. We
|
|
mark the symbol now, as well as in traverse_ns, to prevent
|
|
getting stuck in a circular dependency. */
|
|
sym->mark = 1;
|
|
|
|
/* We do not want the middle-end to warn about unused parameters
|
|
as this was already done above. */
|
|
if (sym->attr.dummy && sym->backend_decl != NULL_TREE)
|
|
TREE_NO_WARNING(sym->backend_decl) = 1;
|
|
}
|
|
else if (sym->attr.flavor == FL_PARAMETER)
|
|
{
|
|
if (warn_unused_parameter
|
|
&& !sym->attr.referenced
|
|
&& !sym->attr.use_assoc)
|
|
gfc_warning ("Unused parameter '%s' declared at %L", sym->name,
|
|
&sym->declared_at);
|
|
}
|
|
else if (sym->attr.flavor == FL_PROCEDURE)
|
|
{
|
|
/* TODO: move to the appropriate place in resolve.c. */
|
|
if (warn_return_type
|
|
&& sym->attr.function
|
|
&& sym->result
|
|
&& sym != sym->result
|
|
&& !sym->result->attr.referenced
|
|
&& !sym->attr.use_assoc
|
|
&& sym->attr.if_source != IFSRC_IFBODY)
|
|
{
|
|
gfc_warning ("Return value '%s' of function '%s' declared at "
|
|
"%L not set", sym->result->name, sym->name,
|
|
&sym->result->declared_at);
|
|
|
|
/* Prevents "Unused variable" warning for RESULT variables. */
|
|
sym->result->mark = 1;
|
|
}
|
|
}
|
|
|
|
if (sym->attr.dummy == 1)
|
|
{
|
|
/* Modify the tree type for scalar character dummy arguments of bind(c)
|
|
procedures if they are passed by value. The tree type for them will
|
|
be promoted to INTEGER_TYPE for the middle end, which appears to be
|
|
what C would do with characters passed by-value. The value attribute
|
|
implies the dummy is a scalar. */
|
|
if (sym->attr.value == 1 && sym->backend_decl != NULL
|
|
&& sym->ts.type == BT_CHARACTER && sym->ts.is_c_interop
|
|
&& sym->ns->proc_name != NULL && sym->ns->proc_name->attr.is_bind_c)
|
|
gfc_conv_scalar_char_value (sym, NULL, NULL);
|
|
}
|
|
|
|
/* Make sure we convert the types of the derived types from iso_c_binding
|
|
into (void *). */
|
|
if (sym->attr.flavor != FL_PROCEDURE && sym->attr.is_iso_c
|
|
&& sym->ts.type == BT_DERIVED)
|
|
sym->backend_decl = gfc_typenode_for_spec (&(sym->ts));
|
|
}
|
|
|
|
static void
|
|
generate_local_vars (gfc_namespace * ns)
|
|
{
|
|
gfc_traverse_ns (ns, generate_local_decl);
|
|
}
|
|
|
|
|
|
/* Generate a switch statement to jump to the correct entry point. Also
|
|
creates the label decls for the entry points. */
|
|
|
|
static tree
|
|
gfc_trans_entry_master_switch (gfc_entry_list * el)
|
|
{
|
|
stmtblock_t block;
|
|
tree label;
|
|
tree tmp;
|
|
tree val;
|
|
|
|
gfc_init_block (&block);
|
|
for (; el; el = el->next)
|
|
{
|
|
/* Add the case label. */
|
|
label = gfc_build_label_decl (NULL_TREE);
|
|
val = build_int_cst (gfc_array_index_type, el->id);
|
|
tmp = build3_v (CASE_LABEL_EXPR, val, NULL_TREE, label);
|
|
gfc_add_expr_to_block (&block, tmp);
|
|
|
|
/* And jump to the actual entry point. */
|
|
label = gfc_build_label_decl (NULL_TREE);
|
|
tmp = build1_v (GOTO_EXPR, label);
|
|
gfc_add_expr_to_block (&block, tmp);
|
|
|
|
/* Save the label decl. */
|
|
el->label = label;
|
|
}
|
|
tmp = gfc_finish_block (&block);
|
|
/* The first argument selects the entry point. */
|
|
val = DECL_ARGUMENTS (current_function_decl);
|
|
tmp = build3_v (SWITCH_EXPR, val, tmp, NULL_TREE);
|
|
return tmp;
|
|
}
|
|
|
|
|
|
/* Add code to string lengths of actual arguments passed to a function against
|
|
the expected lengths of the dummy arguments. */
|
|
|
|
static void
|
|
add_argument_checking (stmtblock_t *block, gfc_symbol *sym)
|
|
{
|
|
gfc_formal_arglist *formal;
|
|
|
|
for (formal = sym->formal; formal; formal = formal->next)
|
|
if (formal->sym && formal->sym->ts.type == BT_CHARACTER)
|
|
{
|
|
enum tree_code comparison;
|
|
tree cond;
|
|
tree argname;
|
|
gfc_symbol *fsym;
|
|
gfc_charlen *cl;
|
|
const char *message;
|
|
|
|
fsym = formal->sym;
|
|
cl = fsym->ts.u.cl;
|
|
|
|
gcc_assert (cl);
|
|
gcc_assert (cl->passed_length != NULL_TREE);
|
|
gcc_assert (cl->backend_decl != NULL_TREE);
|
|
|
|
/* For POINTER, ALLOCATABLE and assumed-shape dummy arguments, the
|
|
string lengths must match exactly. Otherwise, it is only required
|
|
that the actual string length is *at least* the expected one.
|
|
Sequence association allows for a mismatch of the string length
|
|
if the actual argument is (part of) an array, but only if the
|
|
dummy argument is an array. (See "Sequence association" in
|
|
Section 12.4.1.4 for F95 and 12.4.1.5 for F2003.) */
|
|
if (fsym->attr.pointer || fsym->attr.allocatable
|
|
|| (fsym->as && fsym->as->type == AS_ASSUMED_SHAPE))
|
|
{
|
|
comparison = NE_EXPR;
|
|
message = _("Actual string length does not match the declared one"
|
|
" for dummy argument '%s' (%ld/%ld)");
|
|
}
|
|
else if (fsym->as && fsym->as->rank != 0)
|
|
continue;
|
|
else
|
|
{
|
|
comparison = LT_EXPR;
|
|
message = _("Actual string length is shorter than the declared one"
|
|
" for dummy argument '%s' (%ld/%ld)");
|
|
}
|
|
|
|
/* Build the condition. For optional arguments, an actual length
|
|
of 0 is also acceptable if the associated string is NULL, which
|
|
means the argument was not passed. */
|
|
cond = fold_build2 (comparison, boolean_type_node,
|
|
cl->passed_length, cl->backend_decl);
|
|
if (fsym->attr.optional)
|
|
{
|
|
tree not_absent;
|
|
tree not_0length;
|
|
tree absent_failed;
|
|
|
|
not_0length = fold_build2 (NE_EXPR, boolean_type_node,
|
|
cl->passed_length,
|
|
fold_convert (gfc_charlen_type_node,
|
|
integer_zero_node));
|
|
/* The symbol needs to be referenced for gfc_get_symbol_decl. */
|
|
fsym->attr.referenced = 1;
|
|
not_absent = gfc_conv_expr_present (fsym);
|
|
|
|
absent_failed = fold_build2 (TRUTH_OR_EXPR, boolean_type_node,
|
|
not_0length, not_absent);
|
|
|
|
cond = fold_build2 (TRUTH_AND_EXPR, boolean_type_node,
|
|
cond, absent_failed);
|
|
}
|
|
|
|
/* Build the runtime check. */
|
|
argname = gfc_build_cstring_const (fsym->name);
|
|
argname = gfc_build_addr_expr (pchar_type_node, argname);
|
|
gfc_trans_runtime_check (true, false, cond, block, &fsym->declared_at,
|
|
message, argname,
|
|
fold_convert (long_integer_type_node,
|
|
cl->passed_length),
|
|
fold_convert (long_integer_type_node,
|
|
cl->backend_decl));
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
create_main_function (tree fndecl)
|
|
{
|
|
tree old_context;
|
|
tree ftn_main;
|
|
tree tmp, decl, result_decl, argc, argv, typelist, arglist;
|
|
stmtblock_t body;
|
|
|
|
old_context = current_function_decl;
|
|
|
|
if (old_context)
|
|
{
|
|
push_function_context ();
|
|
saved_parent_function_decls = saved_function_decls;
|
|
saved_function_decls = NULL_TREE;
|
|
}
|
|
|
|
/* main() function must be declared with global scope. */
|
|
gcc_assert (current_function_decl == NULL_TREE);
|
|
|
|
/* Declare the function. */
|
|
tmp = build_function_type_list (integer_type_node, integer_type_node,
|
|
build_pointer_type (pchar_type_node),
|
|
NULL_TREE);
|
|
main_identifier_node = get_identifier ("main");
|
|
ftn_main = build_decl (input_location, FUNCTION_DECL,
|
|
main_identifier_node, tmp);
|
|
DECL_EXTERNAL (ftn_main) = 0;
|
|
TREE_PUBLIC (ftn_main) = 1;
|
|
TREE_STATIC (ftn_main) = 1;
|
|
DECL_ATTRIBUTES (ftn_main)
|
|
= tree_cons (get_identifier("externally_visible"), NULL_TREE, NULL_TREE);
|
|
|
|
/* Setup the result declaration (for "return 0"). */
|
|
result_decl = build_decl (input_location,
|
|
RESULT_DECL, NULL_TREE, integer_type_node);
|
|
DECL_ARTIFICIAL (result_decl) = 1;
|
|
DECL_IGNORED_P (result_decl) = 1;
|
|
DECL_CONTEXT (result_decl) = ftn_main;
|
|
DECL_RESULT (ftn_main) = result_decl;
|
|
|
|
pushdecl (ftn_main);
|
|
|
|
/* Get the arguments. */
|
|
|
|
arglist = NULL_TREE;
|
|
typelist = TYPE_ARG_TYPES (TREE_TYPE (ftn_main));
|
|
|
|
tmp = TREE_VALUE (typelist);
|
|
argc = build_decl (input_location, PARM_DECL, get_identifier ("argc"), tmp);
|
|
DECL_CONTEXT (argc) = ftn_main;
|
|
DECL_ARG_TYPE (argc) = TREE_VALUE (typelist);
|
|
TREE_READONLY (argc) = 1;
|
|
gfc_finish_decl (argc);
|
|
arglist = chainon (arglist, argc);
|
|
|
|
typelist = TREE_CHAIN (typelist);
|
|
tmp = TREE_VALUE (typelist);
|
|
argv = build_decl (input_location, PARM_DECL, get_identifier ("argv"), tmp);
|
|
DECL_CONTEXT (argv) = ftn_main;
|
|
DECL_ARG_TYPE (argv) = TREE_VALUE (typelist);
|
|
TREE_READONLY (argv) = 1;
|
|
DECL_BY_REFERENCE (argv) = 1;
|
|
gfc_finish_decl (argv);
|
|
arglist = chainon (arglist, argv);
|
|
|
|
DECL_ARGUMENTS (ftn_main) = arglist;
|
|
current_function_decl = ftn_main;
|
|
announce_function (ftn_main);
|
|
|
|
rest_of_decl_compilation (ftn_main, 1, 0);
|
|
make_decl_rtl (ftn_main);
|
|
init_function_start (ftn_main);
|
|
pushlevel (0);
|
|
|
|
gfc_init_block (&body);
|
|
|
|
/* Call some libgfortran initialization routines, call then MAIN__(). */
|
|
|
|
/* Call _gfortran_set_args (argc, argv). */
|
|
TREE_USED (argc) = 1;
|
|
TREE_USED (argv) = 1;
|
|
tmp = build_call_expr_loc (input_location,
|
|
gfor_fndecl_set_args, 2, argc, argv);
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
|
|
/* Add a call to set_options to set up the runtime library Fortran
|
|
language standard parameters. */
|
|
{
|
|
tree array_type, array, var;
|
|
|
|
/* Passing a new option to the library requires four modifications:
|
|
+ add it to the tree_cons list below
|
|
+ change the array size in the call to build_array_type
|
|
+ change the first argument to the library call
|
|
gfor_fndecl_set_options
|
|
+ modify the library (runtime/compile_options.c)! */
|
|
|
|
array = tree_cons (NULL_TREE, build_int_cst (integer_type_node,
|
|
gfc_option.warn_std), NULL_TREE);
|
|
array = tree_cons (NULL_TREE, build_int_cst (integer_type_node,
|
|
gfc_option.allow_std), array);
|
|
array = tree_cons (NULL_TREE, build_int_cst (integer_type_node, pedantic),
|
|
array);
|
|
array = tree_cons (NULL_TREE, build_int_cst (integer_type_node,
|
|
gfc_option.flag_dump_core), array);
|
|
array = tree_cons (NULL_TREE, build_int_cst (integer_type_node,
|
|
gfc_option.flag_backtrace), array);
|
|
array = tree_cons (NULL_TREE, build_int_cst (integer_type_node,
|
|
gfc_option.flag_sign_zero), array);
|
|
|
|
array = tree_cons (NULL_TREE, build_int_cst (integer_type_node,
|
|
(gfc_option.rtcheck & GFC_RTCHECK_BOUNDS)), array);
|
|
|
|
array = tree_cons (NULL_TREE, build_int_cst (integer_type_node,
|
|
gfc_option.flag_range_check), array);
|
|
|
|
array_type = build_array_type (integer_type_node,
|
|
build_index_type (build_int_cst (NULL_TREE, 7)));
|
|
array = build_constructor_from_list (array_type, nreverse (array));
|
|
TREE_CONSTANT (array) = 1;
|
|
TREE_STATIC (array) = 1;
|
|
|
|
/* Create a static variable to hold the jump table. */
|
|
var = gfc_create_var (array_type, "options");
|
|
TREE_CONSTANT (var) = 1;
|
|
TREE_STATIC (var) = 1;
|
|
TREE_READONLY (var) = 1;
|
|
DECL_INITIAL (var) = array;
|
|
var = gfc_build_addr_expr (build_pointer_type (integer_type_node), var);
|
|
|
|
tmp = build_call_expr_loc (input_location,
|
|
gfor_fndecl_set_options, 2,
|
|
build_int_cst (integer_type_node, 8), var);
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
}
|
|
|
|
/* If -ffpe-trap option was provided, add a call to set_fpe so that
|
|
the library will raise a FPE when needed. */
|
|
if (gfc_option.fpe != 0)
|
|
{
|
|
tmp = build_call_expr_loc (input_location,
|
|
gfor_fndecl_set_fpe, 1,
|
|
build_int_cst (integer_type_node,
|
|
gfc_option.fpe));
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
}
|
|
|
|
/* If this is the main program and an -fconvert option was provided,
|
|
add a call to set_convert. */
|
|
|
|
if (gfc_option.convert != GFC_CONVERT_NATIVE)
|
|
{
|
|
tmp = build_call_expr_loc (input_location,
|
|
gfor_fndecl_set_convert, 1,
|
|
build_int_cst (integer_type_node,
|
|
gfc_option.convert));
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
}
|
|
|
|
/* If this is the main program and an -frecord-marker option was provided,
|
|
add a call to set_record_marker. */
|
|
|
|
if (gfc_option.record_marker != 0)
|
|
{
|
|
tmp = build_call_expr_loc (input_location,
|
|
gfor_fndecl_set_record_marker, 1,
|
|
build_int_cst (integer_type_node,
|
|
gfc_option.record_marker));
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
}
|
|
|
|
if (gfc_option.max_subrecord_length != 0)
|
|
{
|
|
tmp = build_call_expr_loc (input_location,
|
|
gfor_fndecl_set_max_subrecord_length, 1,
|
|
build_int_cst (integer_type_node,
|
|
gfc_option.max_subrecord_length));
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
}
|
|
|
|
/* Call MAIN__(). */
|
|
tmp = build_call_expr_loc (input_location,
|
|
fndecl, 0);
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
|
|
/* Mark MAIN__ as used. */
|
|
TREE_USED (fndecl) = 1;
|
|
|
|
/* "return 0". */
|
|
tmp = fold_build2 (MODIFY_EXPR, integer_type_node, DECL_RESULT (ftn_main),
|
|
build_int_cst (integer_type_node, 0));
|
|
tmp = build1_v (RETURN_EXPR, tmp);
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
|
|
|
|
DECL_SAVED_TREE (ftn_main) = gfc_finish_block (&body);
|
|
decl = getdecls ();
|
|
|
|
/* Finish off this function and send it for code generation. */
|
|
poplevel (1, 0, 1);
|
|
BLOCK_SUPERCONTEXT (DECL_INITIAL (ftn_main)) = ftn_main;
|
|
|
|
DECL_SAVED_TREE (ftn_main)
|
|
= build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (ftn_main),
|
|
DECL_INITIAL (ftn_main));
|
|
|
|
/* Output the GENERIC tree. */
|
|
dump_function (TDI_original, ftn_main);
|
|
|
|
cgraph_finalize_function (ftn_main, true);
|
|
|
|
if (old_context)
|
|
{
|
|
pop_function_context ();
|
|
saved_function_decls = saved_parent_function_decls;
|
|
}
|
|
current_function_decl = old_context;
|
|
}
|
|
|
|
|
|
/* Generate code for a function. */
|
|
|
|
void
|
|
gfc_generate_function_code (gfc_namespace * ns)
|
|
{
|
|
tree fndecl;
|
|
tree old_context;
|
|
tree decl;
|
|
tree tmp;
|
|
tree tmp2;
|
|
stmtblock_t block;
|
|
stmtblock_t body;
|
|
tree result;
|
|
tree recurcheckvar = NULL_TREE;
|
|
gfc_symbol *sym;
|
|
int rank;
|
|
bool is_recursive;
|
|
|
|
sym = ns->proc_name;
|
|
|
|
/* Check that the frontend isn't still using this. */
|
|
gcc_assert (sym->tlink == NULL);
|
|
sym->tlink = sym;
|
|
|
|
/* Create the declaration for functions with global scope. */
|
|
if (!sym->backend_decl)
|
|
gfc_create_function_decl (ns);
|
|
|
|
fndecl = sym->backend_decl;
|
|
old_context = current_function_decl;
|
|
|
|
if (old_context)
|
|
{
|
|
push_function_context ();
|
|
saved_parent_function_decls = saved_function_decls;
|
|
saved_function_decls = NULL_TREE;
|
|
}
|
|
|
|
trans_function_start (sym);
|
|
|
|
gfc_init_block (&block);
|
|
|
|
if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER)
|
|
{
|
|
/* Copy length backend_decls to all entry point result
|
|
symbols. */
|
|
gfc_entry_list *el;
|
|
tree backend_decl;
|
|
|
|
gfc_conv_const_charlen (ns->proc_name->ts.u.cl);
|
|
backend_decl = ns->proc_name->result->ts.u.cl->backend_decl;
|
|
for (el = ns->entries; el; el = el->next)
|
|
el->sym->result->ts.u.cl->backend_decl = backend_decl;
|
|
}
|
|
|
|
/* Translate COMMON blocks. */
|
|
gfc_trans_common (ns);
|
|
|
|
/* Null the parent fake result declaration if this namespace is
|
|
a module function or an external procedures. */
|
|
if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE)
|
|
|| ns->parent == NULL)
|
|
parent_fake_result_decl = NULL_TREE;
|
|
|
|
gfc_generate_contained_functions (ns);
|
|
|
|
nonlocal_dummy_decls = NULL;
|
|
nonlocal_dummy_decl_pset = NULL;
|
|
|
|
generate_local_vars (ns);
|
|
|
|
/* Keep the parent fake result declaration in module functions
|
|
or external procedures. */
|
|
if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE)
|
|
|| ns->parent == NULL)
|
|
current_fake_result_decl = parent_fake_result_decl;
|
|
else
|
|
current_fake_result_decl = NULL_TREE;
|
|
|
|
current_function_return_label = NULL;
|
|
|
|
/* Now generate the code for the body of this function. */
|
|
gfc_init_block (&body);
|
|
|
|
is_recursive = sym->attr.recursive
|
|
|| (sym->attr.entry_master
|
|
&& sym->ns->entries->sym->attr.recursive);
|
|
if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION)
|
|
&& !is_recursive
|
|
&& !gfc_option.flag_recursive)
|
|
{
|
|
char * msg;
|
|
|
|
asprintf (&msg, "Recursive call to nonrecursive procedure '%s'",
|
|
sym->name);
|
|
recurcheckvar = gfc_create_var (boolean_type_node, "is_recursive");
|
|
TREE_STATIC (recurcheckvar) = 1;
|
|
DECL_INITIAL (recurcheckvar) = boolean_false_node;
|
|
gfc_add_expr_to_block (&block, recurcheckvar);
|
|
gfc_trans_runtime_check (true, false, recurcheckvar, &block,
|
|
&sym->declared_at, msg);
|
|
gfc_add_modify (&block, recurcheckvar, boolean_true_node);
|
|
gfc_free (msg);
|
|
}
|
|
|
|
if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node
|
|
&& sym->attr.subroutine)
|
|
{
|
|
tree alternate_return;
|
|
alternate_return = gfc_get_fake_result_decl (sym, 0);
|
|
gfc_add_modify (&body, alternate_return, integer_zero_node);
|
|
}
|
|
|
|
if (ns->entries)
|
|
{
|
|
/* Jump to the correct entry point. */
|
|
tmp = gfc_trans_entry_master_switch (ns->entries);
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
}
|
|
|
|
/* If bounds-checking is enabled, generate code to check passed in actual
|
|
arguments against the expected dummy argument attributes (e.g. string
|
|
lengths). */
|
|
if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS) && !sym->attr.is_bind_c)
|
|
add_argument_checking (&body, sym);
|
|
|
|
tmp = gfc_trans_code (ns->code);
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
|
|
/* Add a return label if needed. */
|
|
if (current_function_return_label)
|
|
{
|
|
tmp = build1_v (LABEL_EXPR, current_function_return_label);
|
|
gfc_add_expr_to_block (&body, tmp);
|
|
}
|
|
|
|
tmp = gfc_finish_block (&body);
|
|
/* Add code to create and cleanup arrays. */
|
|
tmp = gfc_trans_deferred_vars (sym, tmp);
|
|
|
|
if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node)
|
|
{
|
|
if (sym->attr.subroutine || sym == sym->result)
|
|
{
|
|
if (current_fake_result_decl != NULL)
|
|
result = TREE_VALUE (current_fake_result_decl);
|
|
else
|
|
result = NULL_TREE;
|
|
current_fake_result_decl = NULL_TREE;
|
|
}
|
|
else
|
|
result = sym->result->backend_decl;
|
|
|
|
if (result != NULL_TREE
|
|
&& sym->attr.function
|
|
&& !sym->attr.pointer)
|
|
{
|
|
if (sym->ts.type == BT_DERIVED
|
|
&& sym->ts.u.derived->attr.alloc_comp)
|
|
{
|
|
rank = sym->as ? sym->as->rank : 0;
|
|
tmp2 = gfc_nullify_alloc_comp (sym->ts.u.derived, result, rank);
|
|
gfc_add_expr_to_block (&block, tmp2);
|
|
}
|
|
else if (sym->attr.allocatable && sym->attr.dimension == 0)
|
|
gfc_add_modify (&block, result, fold_convert (TREE_TYPE (result),
|
|
null_pointer_node));
|
|
}
|
|
|
|
gfc_add_expr_to_block (&block, tmp);
|
|
|
|
/* Reset recursion-check variable. */
|
|
if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION)
|
|
&& !is_recursive
|
|
&& !gfc_option.flag_openmp
|
|
&& recurcheckvar != NULL_TREE)
|
|
{
|
|
gfc_add_modify (&block, recurcheckvar, boolean_false_node);
|
|
recurcheckvar = NULL;
|
|
}
|
|
|
|
if (result == NULL_TREE)
|
|
{
|
|
/* TODO: move to the appropriate place in resolve.c. */
|
|
if (warn_return_type && !sym->attr.referenced && sym == sym->result)
|
|
gfc_warning ("Return value of function '%s' at %L not set",
|
|
sym->name, &sym->declared_at);
|
|
|
|
TREE_NO_WARNING(sym->backend_decl) = 1;
|
|
}
|
|
else
|
|
{
|
|
/* Set the return value to the dummy result variable. The
|
|
types may be different for scalar default REAL functions
|
|
with -ff2c, therefore we have to convert. */
|
|
tmp = convert (TREE_TYPE (DECL_RESULT (fndecl)), result);
|
|
tmp = fold_build2 (MODIFY_EXPR, TREE_TYPE (tmp),
|
|
DECL_RESULT (fndecl), tmp);
|
|
tmp = build1_v (RETURN_EXPR, tmp);
|
|
gfc_add_expr_to_block (&block, tmp);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
gfc_add_expr_to_block (&block, tmp);
|
|
/* Reset recursion-check variable. */
|
|
if ((gfc_option.rtcheck & GFC_RTCHECK_RECURSION)
|
|
&& !is_recursive
|
|
&& !gfc_option.flag_openmp
|
|
&& recurcheckvar != NULL_TREE)
|
|
{
|
|
gfc_add_modify (&block, recurcheckvar, boolean_false_node);
|
|
recurcheckvar = NULL_TREE;
|
|
}
|
|
}
|
|
|
|
|
|
/* Add all the decls we created during processing. */
|
|
decl = saved_function_decls;
|
|
while (decl)
|
|
{
|
|
tree next;
|
|
|
|
next = TREE_CHAIN (decl);
|
|
TREE_CHAIN (decl) = NULL_TREE;
|
|
pushdecl (decl);
|
|
decl = next;
|
|
}
|
|
saved_function_decls = NULL_TREE;
|
|
|
|
DECL_SAVED_TREE (fndecl) = gfc_finish_block (&block);
|
|
decl = getdecls ();
|
|
|
|
/* Finish off this function and send it for code generation. */
|
|
poplevel (1, 0, 1);
|
|
BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
|
|
|
|
DECL_SAVED_TREE (fndecl)
|
|
= build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl),
|
|
DECL_INITIAL (fndecl));
|
|
|
|
if (nonlocal_dummy_decls)
|
|
{
|
|
BLOCK_VARS (DECL_INITIAL (fndecl))
|
|
= chainon (BLOCK_VARS (DECL_INITIAL (fndecl)), nonlocal_dummy_decls);
|
|
pointer_set_destroy (nonlocal_dummy_decl_pset);
|
|
nonlocal_dummy_decls = NULL;
|
|
nonlocal_dummy_decl_pset = NULL;
|
|
}
|
|
|
|
/* Output the GENERIC tree. */
|
|
dump_function (TDI_original, fndecl);
|
|
|
|
/* Store the end of the function, so that we get good line number
|
|
info for the epilogue. */
|
|
cfun->function_end_locus = input_location;
|
|
|
|
/* We're leaving the context of this function, so zap cfun.
|
|
It's still in DECL_STRUCT_FUNCTION, and we'll restore it in
|
|
tree_rest_of_compilation. */
|
|
set_cfun (NULL);
|
|
|
|
if (old_context)
|
|
{
|
|
pop_function_context ();
|
|
saved_function_decls = saved_parent_function_decls;
|
|
}
|
|
current_function_decl = old_context;
|
|
|
|
if (decl_function_context (fndecl))
|
|
/* Register this function with cgraph just far enough to get it
|
|
added to our parent's nested function list. */
|
|
(void) cgraph_node (fndecl);
|
|
else
|
|
cgraph_finalize_function (fndecl, true);
|
|
|
|
gfc_trans_use_stmts (ns);
|
|
gfc_traverse_ns (ns, gfc_emit_parameter_debug_info);
|
|
|
|
if (sym->attr.is_main_program)
|
|
create_main_function (fndecl);
|
|
}
|
|
|
|
|
|
void
|
|
gfc_generate_constructors (void)
|
|
{
|
|
gcc_assert (gfc_static_ctors == NULL_TREE);
|
|
#if 0
|
|
tree fnname;
|
|
tree type;
|
|
tree fndecl;
|
|
tree decl;
|
|
tree tmp;
|
|
|
|
if (gfc_static_ctors == NULL_TREE)
|
|
return;
|
|
|
|
fnname = get_file_function_name ("I");
|
|
type = build_function_type (void_type_node,
|
|
gfc_chainon_list (NULL_TREE, void_type_node));
|
|
|
|
fndecl = build_decl (input_location,
|
|
FUNCTION_DECL, fnname, type);
|
|
TREE_PUBLIC (fndecl) = 1;
|
|
|
|
decl = build_decl (input_location,
|
|
RESULT_DECL, NULL_TREE, void_type_node);
|
|
DECL_ARTIFICIAL (decl) = 1;
|
|
DECL_IGNORED_P (decl) = 1;
|
|
DECL_CONTEXT (decl) = fndecl;
|
|
DECL_RESULT (fndecl) = decl;
|
|
|
|
pushdecl (fndecl);
|
|
|
|
current_function_decl = fndecl;
|
|
|
|
rest_of_decl_compilation (fndecl, 1, 0);
|
|
|
|
make_decl_rtl (fndecl);
|
|
|
|
init_function_start (fndecl);
|
|
|
|
pushlevel (0);
|
|
|
|
for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors))
|
|
{
|
|
tmp = build_call_expr_loc (input_location,
|
|
TREE_VALUE (gfc_static_ctors), 0);
|
|
DECL_SAVED_TREE (fndecl) = build_stmt (input_location, EXPR_STMT, tmp);
|
|
}
|
|
|
|
decl = getdecls ();
|
|
poplevel (1, 0, 1);
|
|
|
|
BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
|
|
DECL_SAVED_TREE (fndecl)
|
|
= build3_v (BIND_EXPR, decl, DECL_SAVED_TREE (fndecl),
|
|
DECL_INITIAL (fndecl));
|
|
|
|
free_after_parsing (cfun);
|
|
free_after_compilation (cfun);
|
|
|
|
tree_rest_of_compilation (fndecl);
|
|
|
|
current_function_decl = NULL_TREE;
|
|
#endif
|
|
}
|
|
|
|
/* Translates a BLOCK DATA program unit. This means emitting the
|
|
commons contained therein plus their initializations. We also emit
|
|
a globally visible symbol to make sure that each BLOCK DATA program
|
|
unit remains unique. */
|
|
|
|
void
|
|
gfc_generate_block_data (gfc_namespace * ns)
|
|
{
|
|
tree decl;
|
|
tree id;
|
|
|
|
/* Tell the backend the source location of the block data. */
|
|
if (ns->proc_name)
|
|
gfc_set_backend_locus (&ns->proc_name->declared_at);
|
|
else
|
|
gfc_set_backend_locus (&gfc_current_locus);
|
|
|
|
/* Process the DATA statements. */
|
|
gfc_trans_common (ns);
|
|
|
|
/* Create a global symbol with the mane of the block data. This is to
|
|
generate linker errors if the same name is used twice. It is never
|
|
really used. */
|
|
if (ns->proc_name)
|
|
id = gfc_sym_mangled_function_id (ns->proc_name);
|
|
else
|
|
id = get_identifier ("__BLOCK_DATA__");
|
|
|
|
decl = build_decl (input_location,
|
|
VAR_DECL, id, gfc_array_index_type);
|
|
TREE_PUBLIC (decl) = 1;
|
|
TREE_STATIC (decl) = 1;
|
|
DECL_IGNORED_P (decl) = 1;
|
|
|
|
pushdecl (decl);
|
|
rest_of_decl_compilation (decl, 1, 0);
|
|
}
|
|
|
|
|
|
/* Process the local variables of a BLOCK construct. */
|
|
|
|
void
|
|
gfc_process_block_locals (gfc_namespace* ns)
|
|
{
|
|
tree decl;
|
|
|
|
gcc_assert (saved_local_decls == NULL_TREE);
|
|
generate_local_vars (ns);
|
|
|
|
decl = saved_local_decls;
|
|
while (decl)
|
|
{
|
|
tree next;
|
|
|
|
next = TREE_CHAIN (decl);
|
|
TREE_CHAIN (decl) = NULL_TREE;
|
|
pushdecl (decl);
|
|
decl = next;
|
|
}
|
|
saved_local_decls = NULL_TREE;
|
|
}
|
|
|
|
|
|
#include "gt-fortran-trans-decl.h"
|