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Diffstat (limited to 'gcc/fortran/trans-const.c')
-rw-r--r-- | gcc/fortran/trans-const.c | 430 |
1 files changed, 0 insertions, 430 deletions
diff --git a/gcc/fortran/trans-const.c b/gcc/fortran/trans-const.c deleted file mode 100644 index 35167b4..0000000 --- a/gcc/fortran/trans-const.c +++ /dev/null @@ -1,430 +0,0 @@ -/* Translation of constants - Copyright (C) 2002-2022 Free Software Foundation, Inc. - Contributed by Paul Brook - -This file is part of GCC. - -GCC is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 3, or (at your option) any later -version. - -GCC is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License -along with GCC; see the file COPYING3. If not see -<http://www.gnu.org/licenses/>. */ - -/* trans-const.c -- convert constant values */ - -#include "config.h" -#include "system.h" -#include "coretypes.h" -#include "tree.h" -#include "gfortran.h" -#include "options.h" -#include "trans.h" -#include "fold-const.h" -#include "stor-layout.h" -#include "realmpfr.h" -#include "trans-const.h" -#include "trans-types.h" -#include "target-memory.h" - -tree gfc_rank_cst[GFC_MAX_DIMENSIONS + 1]; - -/* Build a constant with given type from an int_cst. */ - -tree -gfc_build_const (tree type, tree intval) -{ - tree val; - tree zero; - - switch (TREE_CODE (type)) - { - case INTEGER_TYPE: - val = convert (type, intval); - break; - - case REAL_TYPE: - val = build_real_from_int_cst (type, intval); - break; - - case COMPLEX_TYPE: - val = build_real_from_int_cst (TREE_TYPE (type), intval); - zero = build_real_from_int_cst (TREE_TYPE (type), integer_zero_node); - val = build_complex (type, val, zero); - break; - - default: - gcc_unreachable (); - } - return val; -} - -/* Build a string constant with C char type. */ - -tree -gfc_build_string_const (size_t length, const char *s) -{ - tree str; - tree len; - - str = build_string (length, s); - len = size_int (length); - TREE_TYPE (str) = - build_array_type (gfc_character1_type_node, - build_range_type (gfc_charlen_type_node, - size_one_node, len)); - TYPE_STRING_FLAG (TREE_TYPE (str)) = 1; - return str; -} - - -/* Build a string constant with a type given by its kind; take care of - non-default character kinds. */ - -tree -gfc_build_wide_string_const (int kind, size_t length, const gfc_char_t *string) -{ - int i; - tree str, len; - size_t size; - char *s; - - i = gfc_validate_kind (BT_CHARACTER, kind, false); - size = length * gfc_character_kinds[i].bit_size / 8; - - s = XCNEWVAR (char, size); - gfc_encode_character (kind, length, string, (unsigned char *) s, size); - - str = build_string (size, s); - free (s); - - len = size_int (length); - TREE_TYPE (str) = - build_array_type (gfc_get_char_type (kind), - build_range_type (gfc_charlen_type_node, - size_one_node, len)); - TYPE_STRING_FLAG (TREE_TYPE (str)) = 1; - return str; -} - - -/* Build a Fortran character constant from a zero-terminated string. - There a two version of this function, one that translates the string - and one that doesn't. */ -tree -gfc_build_cstring_const (const char *string) -{ - return gfc_build_string_const (strlen (string) + 1, string); -} - -tree -gfc_build_localized_cstring_const (const char *msgid) -{ - const char *localized = _(msgid); - return gfc_build_string_const (strlen (localized) + 1, localized); -} - - -/* Return a string constant with the given length. Used for static - initializers. The constant will be padded or truncated to match - length. */ - -tree -gfc_conv_string_init (tree length, gfc_expr * expr) -{ - gfc_char_t *s; - HOST_WIDE_INT len; - gfc_charlen_t slen; - tree str; - bool free_s = false; - - gcc_assert (expr->expr_type == EXPR_CONSTANT); - gcc_assert (expr->ts.type == BT_CHARACTER); - gcc_assert (tree_fits_uhwi_p (length)); - - len = TREE_INT_CST_LOW (length); - slen = expr->value.character.length; - - if (len > slen) - { - s = gfc_get_wide_string (len); - memcpy (s, expr->value.character.string, slen * sizeof (gfc_char_t)); - gfc_wide_memset (&s[slen], ' ', len - slen); - free_s = true; - } - else - s = expr->value.character.string; - - str = gfc_build_wide_string_const (expr->ts.kind, len, s); - - if (free_s) - free (s); - - return str; -} - - -/* Create a tree node for the string length if it is constant. */ - -void -gfc_conv_const_charlen (gfc_charlen * cl) -{ - if (!cl || cl->backend_decl) - return; - - if (cl->length && cl->length->expr_type == EXPR_CONSTANT) - { - cl->backend_decl = gfc_conv_mpz_to_tree (cl->length->value.integer, - cl->length->ts.kind); - cl->backend_decl = fold_convert (gfc_charlen_type_node, - cl->backend_decl); - } -} - -void -gfc_init_constants (void) -{ - int n; - - for (n = 0; n <= GFC_MAX_DIMENSIONS; n++) - gfc_rank_cst[n] = build_int_cst (gfc_array_index_type, n); -} - -/* Converts a GMP integer into a backend tree node. */ - -tree -gfc_conv_mpz_to_tree (mpz_t i, int kind) -{ - wide_int val = wi::from_mpz (gfc_get_int_type (kind), i, true); - return wide_int_to_tree (gfc_get_int_type (kind), val); -} - - -/* Convert a GMP integer into a tree node of type given by the type - argument. */ - -tree -gfc_conv_mpz_to_tree_type (mpz_t i, const tree type) -{ - const wide_int val = wi::from_mpz (type, i, true); - return wide_int_to_tree (type, val); -} - - -/* Converts a backend tree into a GMP integer. */ - -void -gfc_conv_tree_to_mpz (mpz_t i, tree source) -{ - wi::to_mpz (wi::to_wide (source), i, TYPE_SIGN (TREE_TYPE (source))); -} - -/* Converts a real constant into backend form. */ - -tree -gfc_conv_mpfr_to_tree (mpfr_t f, int kind, int is_snan) -{ - tree type; - int n; - REAL_VALUE_TYPE real; - - n = gfc_validate_kind (BT_REAL, kind, false); - gcc_assert (gfc_real_kinds[n].radix == 2); - - type = gfc_get_real_type (kind); - if (mpfr_nan_p (f) && is_snan) - real_from_string (&real, "SNaN"); - else - real_from_mpfr (&real, f, type, GFC_RND_MODE); - - return build_real (type, real); -} - -/* Returns a real constant that is +Infinity if the target - supports infinities for this floating-point mode, and - +HUGE_VAL otherwise (the largest representable number). */ - -tree -gfc_build_inf_or_huge (tree type, int kind) -{ - if (HONOR_INFINITIES (TYPE_MODE (type))) - { - REAL_VALUE_TYPE real; - real_inf (&real); - return build_real (type, real); - } - else - { - int k = gfc_validate_kind (BT_REAL, kind, false); - return gfc_conv_mpfr_to_tree (gfc_real_kinds[k].huge, kind, 0); - } -} - -/* Returns a floating-point NaN of a given type. */ - -tree -gfc_build_nan (tree type, const char *str) -{ - REAL_VALUE_TYPE real; - real_nan (&real, str, 1, TYPE_MODE (type)); - return build_real (type, real); -} - -/* Converts a backend tree into a real constant. */ - -void -gfc_conv_tree_to_mpfr (mpfr_ptr f, tree source) -{ - mpfr_from_real (f, TREE_REAL_CST_PTR (source), GFC_RND_MODE); -} - -/* Translate any literal constant to a tree. Constants never have - pre or post chains. Character literal constants are special - special because they have a value and a length, so they cannot be - returned as a single tree. It is up to the caller to set the - length somewhere if necessary. - - Returns the translated constant, or aborts if it gets a type it - can't handle. */ - -tree -gfc_conv_constant_to_tree (gfc_expr * expr) -{ - tree res; - - gcc_assert (expr->expr_type == EXPR_CONSTANT); - - /* If it is has a prescribed memory representation, we build a string - constant and VIEW_CONVERT to its type. */ - - switch (expr->ts.type) - { - case BT_INTEGER: - if (expr->representation.string) - return fold_build1_loc (input_location, VIEW_CONVERT_EXPR, - gfc_get_int_type (expr->ts.kind), - gfc_build_string_const (expr->representation.length, - expr->representation.string)); - else - return gfc_conv_mpz_to_tree (expr->value.integer, expr->ts.kind); - - case BT_REAL: - if (expr->representation.string) - return fold_build1_loc (input_location, VIEW_CONVERT_EXPR, - gfc_get_real_type (expr->ts.kind), - gfc_build_string_const (expr->representation.length, - expr->representation.string)); - else - return gfc_conv_mpfr_to_tree (expr->value.real, expr->ts.kind, expr->is_snan); - - case BT_LOGICAL: - if (expr->representation.string) - { - tree tmp = fold_build1_loc (input_location, VIEW_CONVERT_EXPR, - gfc_get_int_type (expr->ts.kind), - gfc_build_string_const (expr->representation.length, - expr->representation.string)); - if (!integer_zerop (tmp) && !integer_onep (tmp)) - gfc_warning (flag_dec_char_conversions ? OPT_Wsurprising : 0, - "Assigning value other than 0 or 1 to LOGICAL has " - "undefined result at %L", &expr->where); - return fold_convert (gfc_get_logical_type (expr->ts.kind), tmp); - } - else - return build_int_cst (gfc_get_logical_type (expr->ts.kind), - expr->value.logical); - - case BT_COMPLEX: - if (expr->representation.string) - return fold_build1_loc (input_location, VIEW_CONVERT_EXPR, - gfc_get_complex_type (expr->ts.kind), - gfc_build_string_const (expr->representation.length, - expr->representation.string)); - else - { - tree real = gfc_conv_mpfr_to_tree (mpc_realref (expr->value.complex), - expr->ts.kind, expr->is_snan); - tree imag = gfc_conv_mpfr_to_tree (mpc_imagref (expr->value.complex), - expr->ts.kind, expr->is_snan); - - return build_complex (gfc_typenode_for_spec (&expr->ts), - real, imag); - } - - case BT_CHARACTER: - res = gfc_build_wide_string_const (expr->ts.kind, - expr->value.character.length, - expr->value.character.string); - return res; - - case BT_HOLLERITH: - return gfc_build_string_const (expr->representation.length, - expr->representation.string); - - default: - gcc_unreachable (); - } -} - - -/* Like gfc_conv_constant_to_tree, but for a simplified expression. - We can handle character literal constants here as well. */ - -void -gfc_conv_constant (gfc_se * se, gfc_expr * expr) -{ - gfc_ss *ss; - - /* We may be receiving an expression for C_NULL_PTR or C_NULL_FUNPTR. If - so, the expr_type will not yet be an EXPR_CONSTANT. We need to make - it so here. */ - if (expr->ts.type == BT_DERIVED && expr->ts.u.derived - && expr->ts.u.derived->attr.is_iso_c) - { - if (expr->symtree->n.sym->intmod_sym_id == ISOCBINDING_NULL_PTR - || expr->symtree->n.sym->intmod_sym_id == ISOCBINDING_NULL_FUNPTR) - { - /* Create a new EXPR_CONSTANT expression for our local uses. */ - expr = gfc_get_int_expr (gfc_default_integer_kind, NULL, 0); - } - } - - if (expr->expr_type != EXPR_CONSTANT) - { - gfc_expr *e = gfc_get_int_expr (gfc_default_integer_kind, NULL, 0); - gfc_error ("non-constant initialization expression at %L", &expr->where); - se->expr = gfc_conv_constant_to_tree (e); - return; - } - - ss = se->ss; - if (ss != NULL) - { - gfc_ss_info *ss_info; - - ss_info = ss->info; - gcc_assert (ss != gfc_ss_terminator); - gcc_assert (ss_info->type == GFC_SS_SCALAR); - gcc_assert (ss_info->expr == expr); - - se->expr = ss_info->data.scalar.value; - se->string_length = ss_info->string_length; - gfc_advance_se_ss_chain (se); - return; - } - - /* Translate the constant and put it in the simplifier structure. */ - se->expr = gfc_conv_constant_to_tree (expr); - - /* If this is a CHARACTER string, set its length in the simplifier - structure, too. */ - if (expr->ts.type == BT_CHARACTER) - se->string_length = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (se->expr))); -} |