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-rw-r--r--gcc/fortran/trans-const.c430
1 files changed, 0 insertions, 430 deletions
diff --git a/gcc/fortran/trans-const.c b/gcc/fortran/trans-const.c
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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)));
-}