/* Statement translation -- generate GCC trees from gfc_code.
- Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation,
- Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
Contributed by Paul Brook <paul@nowt.org>
and Steven Bosscher <s.bosscher@student.tudelft.nl>
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 2, or (at your option) any later
+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
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "toplev.h"
#include "real.h"
#include "gfortran.h"
+#include "flags.h"
#include "trans.h"
#include "trans-stmt.h"
#include "trans-types.h"
{
iter_info *this_loop;
tree mask;
- tree pmask;
tree maskindex;
int nvar;
tree size;
- struct forall_info *outer;
- struct forall_info *next_nest;
+ struct forall_info *prev_nest;
}
forall_info;
-static void gfc_trans_where_2 (gfc_code *, tree, forall_info *, stmtblock_t *);
+static void gfc_trans_where_2 (gfc_code *, tree, bool,
+ forall_info *, stmtblock_t *);
/* Translate a F95 label number to a LABEL_EXPR. */
tree
gfc_trans_goto (gfc_code * code)
{
+ locus loc = code->loc;
tree assigned_goto;
tree target;
tree tmp;
- tree assign_error;
- tree range_error;
gfc_se se;
-
if (code->label != NULL)
return build1_v (GOTO_EXPR, gfc_get_label_decl (code->label));
gfc_init_se (&se, NULL);
gfc_start_block (&se.pre);
gfc_conv_label_variable (&se, code->expr);
- assign_error =
- gfc_build_cstring_const ("Assigned label is not a target label");
tmp = GFC_DECL_STRING_LEN (se.expr);
tmp = fold_build2 (NE_EXPR, boolean_type_node, tmp,
build_int_cst (TREE_TYPE (tmp), -1));
- gfc_trans_runtime_check (tmp, assign_error, &se.pre);
+ gfc_trans_runtime_check (tmp, &se.pre, &loc,
+ "Assigned label is not a target label");
assigned_goto = GFC_DECL_ASSIGN_ADDR (se.expr);
}
/* Check the label list. */
- range_error = gfc_build_cstring_const ("Assigned label is not in the list");
-
do
{
target = gfc_get_label_decl (code->label);
code = code->block;
}
while (code != NULL);
- gfc_trans_runtime_check (boolean_true_node, range_error, &se.pre);
+ gfc_trans_runtime_check (boolean_true_node, &se.pre, &loc,
+ "Assigned label is not in the list");
+
return gfc_finish_block (&se.pre);
}
}
+/* Check for dependencies between INTENT(IN) and INTENT(OUT) arguments of
+ elemental subroutines. Make temporaries for output arguments if any such
+ dependencies are found. Output arguments are chosen because internal_unpack
+ can be used, as is, to copy the result back to the variable. */
+static void
+gfc_conv_elemental_dependencies (gfc_se * se, gfc_se * loopse,
+ gfc_symbol * sym, gfc_actual_arglist * arg)
+{
+ gfc_actual_arglist *arg0;
+ gfc_expr *e;
+ gfc_formal_arglist *formal;
+ gfc_loopinfo tmp_loop;
+ gfc_se parmse;
+ gfc_ss *ss;
+ gfc_ss_info *info;
+ gfc_symbol *fsym;
+ int n;
+ stmtblock_t block;
+ tree data;
+ tree offset;
+ tree size;
+ tree tmp;
+
+ if (loopse->ss == NULL)
+ return;
+
+ ss = loopse->ss;
+ arg0 = arg;
+ formal = sym->formal;
+
+ /* Loop over all the arguments testing for dependencies. */
+ for (; arg != NULL; arg = arg->next, formal = formal ? formal->next : NULL)
+ {
+ e = arg->expr;
+ if (e == NULL)
+ continue;
+
+ /* Obtain the info structure for the current argument. */
+ info = NULL;
+ for (ss = loopse->ss; ss && ss != gfc_ss_terminator; ss = ss->next)
+ {
+ if (ss->expr != e)
+ continue;
+ info = &ss->data.info;
+ break;
+ }
+
+ /* If there is a dependency, create a temporary and use it
+ instead of the variable. */
+ fsym = formal ? formal->sym : NULL;
+ if (e->expr_type == EXPR_VARIABLE
+ && e->rank && fsym
+ && fsym->attr.intent == INTENT_OUT
+ && gfc_check_fncall_dependency (e, INTENT_OUT, sym, arg0))
+ {
+ /* Make a local loopinfo for the temporary creation, so that
+ none of the other ss->info's have to be renormalized. */
+ gfc_init_loopinfo (&tmp_loop);
+ for (n = 0; n < info->dimen; n++)
+ {
+ tmp_loop.to[n] = loopse->loop->to[n];
+ tmp_loop.from[n] = loopse->loop->from[n];
+ tmp_loop.order[n] = loopse->loop->order[n];
+ }
+
+ /* Generate the temporary. Merge the block so that the
+ declarations are put at the right binding level. */
+ size = gfc_create_var (gfc_array_index_type, NULL);
+ data = gfc_create_var (pvoid_type_node, NULL);
+ gfc_start_block (&block);
+ tmp = gfc_typenode_for_spec (&e->ts);
+ tmp = gfc_trans_create_temp_array (&se->pre, &se->post,
+ &tmp_loop, info, tmp,
+ false, true, false);
+ gfc_add_modify_expr (&se->pre, size, tmp);
+ tmp = fold_convert (pvoid_type_node, info->data);
+ gfc_add_modify_expr (&se->pre, data, tmp);
+ gfc_merge_block_scope (&block);
+
+ /* Obtain the argument descriptor for unpacking. */
+ gfc_init_se (&parmse, NULL);
+ parmse.want_pointer = 1;
+ gfc_conv_expr_descriptor (&parmse, e, gfc_walk_expr (e));
+ gfc_add_block_to_block (&se->pre, &parmse.pre);
+
+ /* Calculate the offset for the temporary. */
+ offset = gfc_index_zero_node;
+ for (n = 0; n < info->dimen; n++)
+ {
+ tmp = gfc_conv_descriptor_stride (info->descriptor,
+ gfc_rank_cst[n]);
+ tmp = fold_build2 (MULT_EXPR, gfc_array_index_type,
+ loopse->loop->from[n], tmp);
+ offset = fold_build2 (MINUS_EXPR, gfc_array_index_type,
+ offset, tmp);
+ }
+ info->offset = gfc_create_var (gfc_array_index_type, NULL);
+ gfc_add_modify_expr (&se->pre, info->offset, offset);
+
+ /* Copy the result back using unpack. */
+ tmp = build_call_expr (gfor_fndecl_in_unpack, 2, parmse.expr, data);
+ gfc_add_expr_to_block (&se->post, tmp);
+
+ gfc_add_block_to_block (&se->post, &parmse.post);
+ }
+ }
+}
+
+
/* Translate the CALL statement. Builds a call to an F95 subroutine. */
tree
-gfc_trans_call (gfc_code * code)
+gfc_trans_call (gfc_code * code, bool dependency_check)
{
gfc_se se;
gfc_ss * ss;
/* Translate the call. */
has_alternate_specifier
- = gfc_conv_function_call (&se, code->resolved_sym, code->ext.actual);
+ = gfc_conv_function_call (&se, code->resolved_sym, code->ext.actual,
+ NULL_TREE);
/* A subroutine without side-effect, by definition, does nothing! */
TREE_SIDE_EFFECTS (se.expr) = 1;
gcc_assert(select_code->op == EXEC_SELECT);
sym = select_code->expr->symtree->n.sym;
se.expr = convert (gfc_typenode_for_spec (&sym->ts), se.expr);
+ if (sym->backend_decl == NULL)
+ sym->backend_decl = gfc_get_symbol_decl (sym);
gfc_add_modify_expr (&se.pre, sym->backend_decl, se.expr);
}
else
gfc_conv_loop_setup (&loop);
gfc_mark_ss_chain_used (ss, 1);
+ /* Convert the arguments, checking for dependencies. */
+ gfc_copy_loopinfo_to_se (&loopse, &loop);
+ loopse.ss = ss;
+
+ /* For operator assignment, we need to do dependency checking.
+ We also check the intent of the parameters. */
+ if (dependency_check)
+ {
+ gfc_symbol *sym;
+ sym = code->resolved_sym;
+ gcc_assert (sym->formal->sym->attr.intent == INTENT_OUT);
+ gcc_assert (sym->formal->next->sym->attr.intent == INTENT_IN);
+ gfc_conv_elemental_dependencies (&se, &loopse, sym,
+ code->ext.actual);
+ }
+
/* Generate the loop body. */
gfc_start_scalarized_body (&loop, &body);
gfc_init_block (&block);
- gfc_copy_loopinfo_to_se (&loopse, &loop);
- loopse.ss = ss;
/* Add the subroutine call to the block. */
- gfc_conv_function_call (&loopse, code->resolved_sym, code->ext.actual);
+ gfc_conv_function_call (&loopse, code->resolved_sym, code->ext.actual,
+ NULL_TREE);
gfc_add_expr_to_block (&loopse.pre, loopse.expr);
gfc_add_block_to_block (&block, &loopse.pre);
gfc_trans_scalarizing_loops (&loop, &body);
gfc_add_block_to_block (&se.pre, &loop.pre);
gfc_add_block_to_block (&se.pre, &loop.post);
+ gfc_add_block_to_block (&se.pre, &se.post);
gfc_cleanup_loop (&loop);
}
tree tmp;
tree result;
- /* if code->expr is not NULL, this return statement must appear
+ /* If code->expr is not NULL, this return statement must appear
in a subroutine and current_fake_result_decl has already
been generated. */
- result = gfc_get_fake_result_decl (NULL);
+ result = gfc_get_fake_result_decl (NULL, 0);
if (!result)
{
gfc_warning ("An alternate return at %L without a * dummy argument",
gfc_conv_expr (&se, code->expr);
- tmp = build2 (MODIFY_EXPR, TREE_TYPE (result), result, se.expr);
+ tmp = build2 (MODIFY_EXPR, TREE_TYPE (result), result,
+ fold_convert (TREE_TYPE (result), se.expr));
gfc_add_expr_to_block (&se.pre, tmp);
tmp = build1_v (GOTO_EXPR, gfc_get_return_label ());
{
tree gfc_int4_type_node = gfc_get_int_type (4);
gfc_se se;
- tree args;
tree tmp;
- tree fndecl;
/* Start a new block for this statement. */
gfc_init_se (&se, NULL);
if (code->expr == NULL)
{
tmp = build_int_cst (gfc_int4_type_node, code->ext.stop_code);
- args = gfc_chainon_list (NULL_TREE, tmp);
- fndecl = gfor_fndecl_pause_numeric;
+ tmp = build_call_expr (gfor_fndecl_pause_numeric, 1, tmp);
}
else
{
gfc_conv_expr_reference (&se, code->expr);
- args = gfc_chainon_list (NULL_TREE, se.expr);
- args = gfc_chainon_list (args, se.string_length);
- fndecl = gfor_fndecl_pause_string;
+ tmp = build_call_expr (gfor_fndecl_pause_string, 2,
+ se.expr, se.string_length);
}
- tmp = build_function_call_expr (fndecl, args);
gfc_add_expr_to_block (&se.pre, tmp);
gfc_add_block_to_block (&se.pre, &se.post);
{
tree gfc_int4_type_node = gfc_get_int_type (4);
gfc_se se;
- tree args;
tree tmp;
- tree fndecl;
/* Start a new block for this statement. */
gfc_init_se (&se, NULL);
if (code->expr == NULL)
{
tmp = build_int_cst (gfc_int4_type_node, code->ext.stop_code);
- args = gfc_chainon_list (NULL_TREE, tmp);
- fndecl = gfor_fndecl_stop_numeric;
+ tmp = build_call_expr (gfor_fndecl_stop_numeric, 1, tmp);
}
else
{
gfc_conv_expr_reference (&se, code->expr);
- args = gfc_chainon_list (NULL_TREE, se.expr);
- args = gfc_chainon_list (args, se.string_length);
- fndecl = gfor_fndecl_stop_string;
+ tmp = build_call_expr (gfor_fndecl_stop_string, 2,
+ se.expr, se.string_length);
}
- tmp = build_function_call_expr (fndecl, args);
gfc_add_expr_to_block (&se.pre, tmp);
gfc_add_block_to_block (&se.pre, &se.post);
}
-/* Translage an arithmetic IF expression.
+/* Translate an arithmetic IF expression.
IF (cond) label1, label2, label3 translates to
/* Pre-evaluate COND. */
gfc_conv_expr_val (&se, code->expr);
+ se.expr = gfc_evaluate_now (se.expr, &se.pre);
/* Build something to compare with. */
zero = gfc_build_const (TREE_TYPE (se.expr), integer_zero_node);
to:
[evaluate loop bounds and step]
- count = (to + step - from) / step;
+ empty = (step > 0 ? to < from : to > from);
+ countm1 = (to - from) / step;
dovar = from;
+ if (empty) goto exit_label;
for (;;)
{
body;
cycle_label:
dovar += step
- count--;
- if (count <=0) goto exit_label;
+ if (countm1 ==0) goto exit_label;
+ countm1--;
}
exit_label:
- TODO: Large loop counts
- The code above assumes the loop count fits into a signed integer kind,
- i.e. Does not work for loop counts > 2^31 for integer(kind=4) variables
- We must support the full range. */
+ countm1 is an unsigned integer. It is equal to the loop count minus one,
+ because the loop count itself can overflow. */
tree
gfc_trans_do (gfc_code * code)
tree from;
tree to;
tree step;
- tree count;
- tree count_one;
+ tree empty;
+ tree countm1;
tree type;
+ tree utype;
tree cond;
tree cycle_label;
tree exit_label;
tree tmp;
+ tree pos_step;
stmtblock_t block;
stmtblock_t body;
|| tree_int_cst_equal (step, integer_minus_one_node)))
return gfc_trans_simple_do (code, &block, dovar, from, to, step);
- /* Initialize loop count. This code is executed before we enter the
- loop body. We generate: count = (to + step - from) / step. */
+ /* We need a special check for empty loops:
+ empty = (step > 0 ? to < from : to > from); */
+ pos_step = fold_build2 (GT_EXPR, boolean_type_node, step,
+ fold_convert (type, integer_zero_node));
+ empty = fold_build3 (COND_EXPR, boolean_type_node, pos_step,
+ fold_build2 (LT_EXPR, boolean_type_node, to, from),
+ fold_build2 (GT_EXPR, boolean_type_node, to, from));
- tmp = fold_build2 (MINUS_EXPR, type, step, from);
- tmp = fold_build2 (PLUS_EXPR, type, to, tmp);
+ /* Initialize loop count. This code is executed before we enter the
+ loop body. We generate: countm1 = abs(to - from) / abs(step). */
if (TREE_CODE (type) == INTEGER_TYPE)
{
- tmp = fold_build2 (TRUNC_DIV_EXPR, type, tmp, step);
- count = gfc_create_var (type, "count");
+ tree ustep;
+
+ utype = unsigned_type_for (type);
+
+ /* tmp = abs(to - from) / abs(step) */
+ ustep = fold_convert (utype, fold_build1 (ABS_EXPR, type, step));
+ tmp = fold_build3 (COND_EXPR, type, pos_step,
+ fold_build2 (MINUS_EXPR, type, to, from),
+ fold_build2 (MINUS_EXPR, type, from, to));
+ tmp = fold_build2 (TRUNC_DIV_EXPR, utype, fold_convert (utype, tmp),
+ ustep);
}
else
{
/* TODO: We could use the same width as the real type.
This would probably cause more problems that it solves
when we implement "long double" types. */
+ utype = unsigned_type_for (gfc_array_index_type);
+ tmp = fold_build2 (MINUS_EXPR, type, to, from);
tmp = fold_build2 (RDIV_EXPR, type, tmp, step);
- tmp = fold_build1 (FIX_TRUNC_EXPR, gfc_array_index_type, tmp);
- count = gfc_create_var (gfc_array_index_type, "count");
+ tmp = fold_build1 (FIX_TRUNC_EXPR, utype, tmp);
}
- gfc_add_modify_expr (&block, count, tmp);
+ countm1 = gfc_create_var (utype, "countm1");
+ gfc_add_modify_expr (&block, countm1, tmp);
- count_one = convert (TREE_TYPE (count), integer_one_node);
+ /* Cycle and exit statements are implemented with gotos. */
+ cycle_label = gfc_build_label_decl (NULL_TREE);
+ exit_label = gfc_build_label_decl (NULL_TREE);
+ TREE_USED (exit_label) = 1;
/* Initialize the DO variable: dovar = from. */
gfc_add_modify_expr (&block, dovar, from);
+ /* If the loop is empty, go directly to the exit label. */
+ tmp = fold_build3 (COND_EXPR, void_type_node, empty,
+ build1_v (GOTO_EXPR, exit_label), build_empty_stmt ());
+ gfc_add_expr_to_block (&block, tmp);
+
/* Loop body. */
gfc_start_block (&body);
- /* Cycle and exit statements are implemented with gotos. */
- cycle_label = gfc_build_label_decl (NULL_TREE);
- exit_label = gfc_build_label_decl (NULL_TREE);
-
- /* Start with the loop condition. Loop until count <= 0. */
- cond = fold_build2 (LE_EXPR, boolean_type_node, count,
- build_int_cst (TREE_TYPE (count), 0));
- tmp = build1_v (GOTO_EXPR, exit_label);
- TREE_USED (exit_label) = 1;
- tmp = fold_build3 (COND_EXPR, void_type_node,
- cond, tmp, build_empty_stmt ());
- gfc_add_expr_to_block (&body, tmp);
-
/* Put these labels where they can be found later. We put the
labels in a TREE_LIST node (because TREE_CHAIN is already
used). cycle_label goes in TREE_PURPOSE (backend_decl), exit
tmp = build2 (PLUS_EXPR, type, dovar, step);
gfc_add_modify_expr (&body, dovar, tmp);
+ /* End with the loop condition. Loop until countm1 == 0. */
+ cond = fold_build2 (EQ_EXPR, boolean_type_node, countm1,
+ build_int_cst (utype, 0));
+ tmp = build1_v (GOTO_EXPR, exit_label);
+ tmp = fold_build3 (COND_EXPR, void_type_node,
+ cond, tmp, build_empty_stmt ());
+ gfc_add_expr_to_block (&body, tmp);
+
/* Decrement the loop count. */
- tmp = build2 (MINUS_EXPR, TREE_TYPE (count), count, count_one);
- gfc_add_modify_expr (&body, count, tmp);
+ tmp = build2 (MINUS_EXPR, utype, countm1, build_int_cst (utype, 1));
+ gfc_add_modify_expr (&body, countm1, tmp);
/* End of loop body. */
tmp = gfc_finish_block (&body);
if (cp->low)
{
- low = gfc_conv_constant_to_tree (cp->low);
+ low = gfc_conv_mpz_to_tree (cp->low->value.integer,
+ cp->low->ts.kind);
/* If there's only a lower bound, set the high bound to the
maximum value of the case expression. */
internal representation of CASE(N).
In the first and second case, we need to set a value for
- high. In the thirth case, we don't because the GCC middle
+ high. In the third case, we don't because the GCC middle
end represents a single case value by just letting high be
a NULL_TREE. We can't do that because we need to be able
to represent unbounded cases. */
|| (cp->low
&& mpz_cmp (cp->low->value.integer,
cp->high->value.integer) != 0))
- high = gfc_conv_constant_to_tree (cp->high);
+ high = gfc_conv_mpz_to_tree (cp->high->value.integer,
+ cp->high->ts.kind);
/* Unbounded case. */
if (!cp->low)
static tree
gfc_trans_character_select (gfc_code *code)
{
- tree init, node, end_label, tmp, type, args, *labels;
+ tree init, node, end_label, tmp, type, case_num, label;
stmtblock_t block, body;
gfc_case *cp, *d;
gfc_code *c;
gfc_se se;
- int i, n;
+ int n;
static tree select_struct;
static tree ss_string1, ss_string1_len;
ADD_FIELD (string2, pchar_type_node);
ADD_FIELD (string2_len, gfc_int4_type_node);
- ADD_FIELD (target, pvoid_type_node);
+ ADD_FIELD (target, integer_type_node);
#undef ADD_FIELD
gfc_finish_type (select_struct);
for (d = cp; d; d = d->right)
d->n = n++;
- if (n != 0)
- labels = gfc_getmem (n * sizeof (tree));
- else
- labels = NULL;
-
- for(i = 0; i < n; i++)
- {
- labels[i] = gfc_build_label_decl (NULL_TREE);
- TREE_USED (labels[i]) = 1;
- /* TODO: The gimplifier should do this for us, but it has
- inadequacies when dealing with static initializers. */
- FORCED_LABEL (labels[i]) = 1;
- }
-
end_label = gfc_build_label_decl (NULL_TREE);
/* Generate the body */
{
for (d = c->ext.case_list; d; d = d->next)
{
- tmp = build1_v (LABEL_EXPR, labels[d->n]);
+ label = gfc_build_label_decl (NULL_TREE);
+ tmp = build3 (CASE_LABEL_EXPR, void_type_node,
+ build_int_cst (NULL_TREE, d->n),
+ build_int_cst (NULL_TREE, d->n), label);
gfc_add_expr_to_block (&body, tmp);
}
/* Generate the structure describing the branches */
init = NULL_TREE;
- i = 0;
- for(d = cp; d; d = d->right, i++)
+ for(d = cp; d; d = d->right)
{
node = NULL_TREE;
node = tree_cons (ss_string2_len, se.string_length, node);
}
- tmp = gfc_build_addr_expr (pvoid_type_node, labels[i]);
- node = tree_cons (ss_target, tmp, node);
+ node = tree_cons (ss_target, build_int_cst (integer_type_node, d->n),
+ node);
tmp = build_constructor_from_list (select_struct, nreverse (node));
init = tree_cons (NULL_TREE, tmp, init);
TREE_CONSTANT (tmp) = 1;
TREE_INVARIANT (tmp) = 1;
TREE_STATIC (tmp) = 1;
+ TREE_READONLY (tmp) = 1;
DECL_INITIAL (tmp) = init;
init = tmp;
- /* Build an argument list for the library call */
+ /* Build the library call */
init = gfc_build_addr_expr (pvoid_type_node, init);
- args = gfc_chainon_list (NULL_TREE, init);
-
- tmp = build_int_cst (NULL_TREE, n);
- args = gfc_chainon_list (args, tmp);
-
- tmp = gfc_build_addr_expr (pvoid_type_node, end_label);
- args = gfc_chainon_list (args, tmp);
gfc_init_se (&se, NULL);
gfc_conv_expr_reference (&se, code->expr);
- args = gfc_chainon_list (args, se.expr);
- args = gfc_chainon_list (args, se.string_length);
-
gfc_add_block_to_block (&block, &se.pre);
- tmp = build_function_call_expr (gfor_fndecl_select_string, args);
- tmp = build1 (GOTO_EXPR, void_type_node, tmp);
- gfc_add_expr_to_block (&block, tmp);
+ tmp = build_call_expr (gfor_fndecl_select_string, 4, init,
+ build_int_cst (NULL_TREE, n), se.expr,
+ se.string_length);
+ case_num = gfc_create_var (integer_type_node, "case_num");
+ gfc_add_modify_expr (&block, case_num, tmp);
+
+ gfc_add_block_to_block (&block, &se.post);
tmp = gfc_finish_block (&body);
+ tmp = build3_v (SWITCH_EXPR, case_num, tmp, NULL_TREE);
gfc_add_expr_to_block (&block, tmp);
+
tmp = build1_v (LABEL_EXPR, end_label);
gfc_add_expr_to_block (&block, tmp);
- if (n != 0)
- gfc_free (labels);
-
return gfc_finish_block (&block);
}
}
-/* Generate the loops for a FORALL block. The normal loop format:
+/* Generate the loops for a FORALL block, specified by FORALL_TMP. BODY
+ is the contents of the FORALL block/stmt to be iterated. MASK_FLAG
+ indicates whether we should generate code to test the FORALLs mask
+ array. OUTER is the loop header to be used for initializing mask
+ indices.
+
+ The generated loop format is:
count = (end - start + step) / step
loopvar = start
while (1)
end_of_loop: */
static tree
-gfc_trans_forall_loop (forall_info *forall_tmp, int nvar, tree body, int mask_flag)
+gfc_trans_forall_loop (forall_info *forall_tmp, tree body,
+ int mask_flag, stmtblock_t *outer)
{
- int n;
+ int n, nvar;
tree tmp;
tree cond;
stmtblock_t block;
tree var, start, end, step;
iter_info *iter;
+ /* Initialize the mask index outside the FORALL nest. */
+ if (mask_flag && forall_tmp->mask)
+ gfc_add_modify_expr (outer, forall_tmp->maskindex, gfc_index_zero_node);
+
iter = forall_tmp->this_loop;
+ nvar = forall_tmp->nvar;
for (n = 0; n < nvar; n++)
{
var = iter->var;
}
/* Decrement the loop counter. */
- tmp = build2 (MINUS_EXPR, TREE_TYPE (var), count, gfc_index_one_node);
+ tmp = build2 (MINUS_EXPR, TREE_TYPE (var), count,
+ build_int_cst (TREE_TYPE (var), 1));
gfc_add_modify_expr (&block, count, tmp);
body = gfc_finish_block (&block);
gfc_init_block (&block);
gfc_add_modify_expr (&block, var, start);
- /* Initialize maskindex counter. Only do this before the
- outermost loop. */
- if (n == nvar - 1 && mask_flag && forall_tmp->mask)
- gfc_add_modify_expr (&block, forall_tmp->maskindex,
- gfc_index_zero_node);
/* Initialize the loop counter. */
tmp = fold_build2 (MINUS_EXPR, TREE_TYPE (var), step, start);
}
-/* Generate the body and loops according to MASK_FLAG and NEST_FLAG.
- if MASK_FLAG is nonzero, the body is controlled by maskes in forall
- nest, otherwise, the body is not controlled by maskes.
- if NEST_FLAG is nonzero, generate loops for nested forall, otherwise,
- only generate loops for the current forall level. */
+/* Generate the body and loops according to MASK_FLAG. If MASK_FLAG
+ is nonzero, the body is controlled by all masks in the forall nest.
+ Otherwise, the innermost loop is not controlled by it's mask. This
+ is used for initializing that mask. */
static tree
gfc_trans_nested_forall_loop (forall_info * nested_forall_info, tree body,
- int mask_flag, int nest_flag)
+ int mask_flag)
{
tree tmp;
- int nvar;
+ stmtblock_t header;
forall_info *forall_tmp;
- tree pmask, mask, maskindex;
+ tree mask, maskindex;
+
+ gfc_start_block (&header);
forall_tmp = nested_forall_info;
- /* Generate loops for nested forall. */
- if (nest_flag)
+ while (forall_tmp != NULL)
{
- while (forall_tmp->next_nest != NULL)
- forall_tmp = forall_tmp->next_nest;
- while (forall_tmp != NULL)
+ /* Generate body with masks' control. */
+ if (mask_flag)
{
- /* Generate body with masks' control. */
- if (mask_flag)
- {
- pmask = forall_tmp->pmask;
- mask = forall_tmp->mask;
- maskindex = forall_tmp->maskindex;
-
- if (mask)
- {
- /* If a mask was specified make the assignment conditional. */
- if (pmask)
- tmp = build_fold_indirect_ref (mask);
- else
- tmp = mask;
- tmp = gfc_build_array_ref (tmp, maskindex);
+ mask = forall_tmp->mask;
+ maskindex = forall_tmp->maskindex;
- body = build3_v (COND_EXPR, tmp, body, build_empty_stmt ());
- }
+ /* If a mask was specified make the assignment conditional. */
+ if (mask)
+ {
+ tmp = gfc_build_array_ref (mask, maskindex);
+ body = build3_v (COND_EXPR, tmp, body, build_empty_stmt ());
}
- nvar = forall_tmp->nvar;
- body = gfc_trans_forall_loop (forall_tmp, nvar, body, mask_flag);
- forall_tmp = forall_tmp->outer;
}
- }
- else
- {
- nvar = forall_tmp->nvar;
- body = gfc_trans_forall_loop (forall_tmp, nvar, body, mask_flag);
+ body = gfc_trans_forall_loop (forall_tmp, body, mask_flag, &header);
+ forall_tmp = forall_tmp->prev_nest;
+ mask_flag = 1;
}
- return body;
+ gfc_add_expr_to_block (&header, body);
+ return gfc_finish_block (&header);
}
tree tmpvar;
tree type;
tree tmp;
- tree args;
if (INTEGER_CST_P (size))
{
tmpvar = gfc_create_var (build_pointer_type (type), "temp");
*pdata = convert (pvoid_type_node, tmpvar);
- args = gfc_chainon_list (NULL_TREE, bytesize);
- if (gfc_index_integer_kind == 4)
- tmp = gfor_fndecl_internal_malloc;
- else if (gfc_index_integer_kind == 8)
- tmp = gfor_fndecl_internal_malloc64;
- else
- gcc_unreachable ();
- tmp = build_function_call_expr (tmp, args);
- tmp = convert (TREE_TYPE (tmpvar), tmp);
+ tmp = gfc_call_malloc (pblock, TREE_TYPE (tmpvar), bytesize);
gfc_add_modify_expr (pblock, tmpvar, tmp);
}
return tmpvar;
static tree
generate_loop_for_temp_to_lhs (gfc_expr *expr, tree tmp1, tree count3,
- tree count1, tree wheremask)
+ tree count1, tree wheremask, bool invert)
{
gfc_ss *lss;
gfc_se lse, rse;
stmtblock_t block, body;
gfc_loopinfo loop1;
- tree tmp, tmp2;
+ tree tmp;
tree wheremaskexpr;
/* Walk the lhs. */
gfc_conv_expr (&lse, expr);
/* Use the scalar assignment. */
- tmp = gfc_trans_scalar_assign (&lse, &rse, expr->ts.type);
+ rse.string_length = lse.string_length;
+ tmp = gfc_trans_scalar_assign (&lse, &rse, expr->ts, false, false);
- /* Form the mask expression according to the mask tree list. */
- if (wheremask)
- {
- wheremaskexpr = gfc_build_array_ref (wheremask, count3);
- tmp2 = TREE_CHAIN (wheremask);
- while (tmp2)
- {
- tmp1 = gfc_build_array_ref (tmp2, count3);
- wheremaskexpr = fold_build2 (TRUTH_AND_EXPR, TREE_TYPE (tmp1),
- wheremaskexpr, tmp1);
- tmp2 = TREE_CHAIN (tmp2);
- }
- tmp = fold_build3 (COND_EXPR, void_type_node,
- wheremaskexpr, tmp, build_empty_stmt ());
+ /* Form the mask expression according to the mask tree list. */
+ if (wheremask)
+ {
+ wheremaskexpr = gfc_build_array_ref (wheremask, count3);
+ if (invert)
+ wheremaskexpr = fold_build1 (TRUTH_NOT_EXPR,
+ TREE_TYPE (wheremaskexpr),
+ wheremaskexpr);
+ tmp = fold_build3 (COND_EXPR, void_type_node,
+ wheremaskexpr, tmp, build_empty_stmt ());
}
gfc_add_expr_to_block (&body, tmp);
}
-/* Generate codes to copy rhs to the temporary. TMP1 is the address of temporary
- LSS and RSS are formed in function compute_inner_temp_size(), and should
- not be freed. */
+/* Generate codes to copy rhs to the temporary. TMP1 is the address of
+ temporary, LSS and RSS are formed in function compute_inner_temp_size(),
+ and should not be freed. WHEREMASK is the conditional execution mask
+ whose sense may be inverted by INVERT. */
static tree
generate_loop_for_rhs_to_temp (gfc_expr *expr2, tree tmp1, tree count3,
tree count1, gfc_ss *lss, gfc_ss *rss,
- tree wheremask)
+ tree wheremask, bool invert)
{
stmtblock_t block, body1;
gfc_loopinfo loop;
gfc_se lse;
gfc_se rse;
- tree tmp, tmp2;
+ tree tmp;
tree wheremaskexpr;
gfc_start_block (&block);
}
/* Use the scalar assignment. */
- tmp = gfc_trans_scalar_assign (&lse, &rse, expr2->ts.type);
+ lse.string_length = rse.string_length;
+ tmp = gfc_trans_scalar_assign (&lse, &rse, expr2->ts, true,
+ expr2->expr_type == EXPR_VARIABLE);
/* Form the mask expression according to the mask tree list. */
if (wheremask)
{
wheremaskexpr = gfc_build_array_ref (wheremask, count3);
- tmp2 = TREE_CHAIN (wheremask);
- while (tmp2)
- {
- tmp1 = gfc_build_array_ref (tmp2, count3);
- wheremaskexpr = fold_build2 (TRUTH_AND_EXPR, TREE_TYPE (tmp1),
- wheremaskexpr, tmp1);
- tmp2 = TREE_CHAIN (tmp2);
- }
+ if (invert)
+ wheremaskexpr = fold_build1 (TRUTH_NOT_EXPR,
+ TREE_TYPE (wheremaskexpr),
+ wheremaskexpr);
tmp = fold_build3 (COND_EXPR, void_type_node,
wheremaskexpr, tmp, build_empty_stmt ());
}
gfc_loopinfo loop;
tree size;
int i;
+ int save_flag;
tree tmp;
*lss = gfc_walk_expr (expr1);
loop.array_parameter = 1;
/* Calculate the bounds of the scalarization. */
+ save_flag = flag_bounds_check;
+ flag_bounds_check = 0;
gfc_conv_ss_startstride (&loop);
+ flag_bounds_check = save_flag;
gfc_conv_loop_setup (&loop);
/* Figure out how many elements we need. */
}
-/* Calculate the overall iterator number of the nested forall construct. */
+/* Calculate the overall iterator number of the nested forall construct.
+ This routine actually calculates the number of times the body of the
+ nested forall specified by NESTED_FORALL_INFO is executed and multiplies
+ that by the expression INNER_SIZE. The BLOCK argument specifies the
+ block in which to calculate the result, and the optional INNER_SIZE_BODY
+ argument contains any statements that need to executed (inside the loop)
+ to initialize or calculate INNER_SIZE. */
static tree
compute_overall_iter_number (forall_info *nested_forall_info, tree inner_size,
stmtblock_t *inner_size_body, stmtblock_t *block)
{
+ forall_info *forall_tmp = nested_forall_info;
tree tmp, number;
stmtblock_t body;
- /* TODO: optimizing the computing process. */
+ /* We can eliminate the innermost unconditional loops with constant
+ array bounds. */
+ if (INTEGER_CST_P (inner_size))
+ {
+ while (forall_tmp
+ && !forall_tmp->mask
+ && INTEGER_CST_P (forall_tmp->size))
+ {
+ inner_size = fold_build2 (MULT_EXPR, gfc_array_index_type,
+ inner_size, forall_tmp->size);
+ forall_tmp = forall_tmp->prev_nest;
+ }
+
+ /* If there are no loops left, we have our constant result. */
+ if (!forall_tmp)
+ return inner_size;
+ }
+
+ /* Otherwise, create a temporary variable to compute the result. */
number = gfc_create_var (gfc_array_index_type, "num");
gfc_add_modify_expr (block, number, gfc_index_zero_node);
gfc_start_block (&body);
if (inner_size_body)
gfc_add_block_to_block (&body, inner_size_body);
- if (nested_forall_info)
+ if (forall_tmp)
tmp = build2 (PLUS_EXPR, gfc_array_index_type, number,
inner_size);
else
tmp = gfc_finish_block (&body);
/* Generate loops. */
- if (nested_forall_info != NULL)
- tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 0, 1);
+ if (forall_tmp != NULL)
+ tmp = gfc_trans_nested_forall_loop (forall_tmp, tmp, 1);
gfc_add_expr_to_block (block, tmp);
allocate_temp_for_forall_nest_1 (tree type, tree size, stmtblock_t * block,
tree * ptemp1)
{
+ tree bytesize;
tree unit;
- tree temp1;
tree tmp;
- tree bytesize;
- unit = TYPE_SIZE_UNIT (type);
- bytesize = fold_build2 (MULT_EXPR, gfc_array_index_type, size, unit);
+ unit = fold_convert (gfc_array_index_type, TYPE_SIZE_UNIT (type));
+ if (!integer_onep (unit))
+ bytesize = fold_build2 (MULT_EXPR, gfc_array_index_type, size, unit);
+ else
+ bytesize = size;
*ptemp1 = NULL;
- temp1 = gfc_do_allocate (bytesize, size, ptemp1, block, type);
+ tmp = gfc_do_allocate (bytesize, size, ptemp1, block, type);
if (*ptemp1)
- tmp = build_fold_indirect_ref (temp1);
- else
- tmp = temp1;
-
+ tmp = build_fold_indirect_ref (tmp);
return tmp;
}
DEALLOCATE (tmp)
*/
static void
-gfc_trans_assign_need_temp (gfc_expr * expr1, gfc_expr * expr2, tree wheremask,
+gfc_trans_assign_need_temp (gfc_expr * expr1, gfc_expr * expr2,
+ tree wheremask, bool invert,
forall_info * nested_forall_info,
stmtblock_t * block)
{
/* Generate codes to copy rhs to the temporary . */
tmp = generate_loop_for_rhs_to_temp (expr2, tmp1, count, count1, lss, rss,
- wheremask);
+ wheremask, invert);
/* Generate body and loops according to the information in
nested_forall_info. */
- tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1, 1);
+ tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1);
gfc_add_expr_to_block (block, tmp);
/* Reset count1. */
gfc_add_modify_expr (block, count, gfc_index_zero_node);
/* Generate codes to copy the temporary to lhs. */
- tmp = generate_loop_for_temp_to_lhs (expr1, tmp1, count, count1, wheremask);
+ tmp = generate_loop_for_temp_to_lhs (expr1, tmp1, count, count1,
+ wheremask, invert);
/* Generate body and loops according to the information in
nested_forall_info. */
- tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1, 1);
+ tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1);
gfc_add_expr_to_block (block, tmp);
if (ptemp1)
{
/* Free the temporary. */
- tmp = gfc_chainon_list (NULL_TREE, ptemp1);
- tmp = build_function_call_expr (gfor_fndecl_internal_free, tmp);
+ tmp = gfc_call_free (ptemp1);
gfc_add_expr_to_block (block, tmp);
}
}
/* Generate body and loops according to the information in
nested_forall_info. */
- tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1, 1);
+ tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1);
gfc_add_expr_to_block (block, tmp);
/* Reset count. */
/* Generate body and loops according to the information in
nested_forall_info. */
- tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1, 1);
+ tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1);
gfc_add_expr_to_block (block, tmp);
}
else
/* Generate body and loops according to the information in
nested_forall_info. */
- tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1, 1);
+ tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1);
gfc_add_expr_to_block (block, tmp);
/* Reset count. */
tmp = gfc_finish_block (&body);
- tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1, 1);
+ tmp = gfc_trans_nested_forall_loop (nested_forall_info, tmp, 1);
gfc_add_expr_to_block (block, tmp);
}
/* Free the temporary. */
if (ptemp1)
{
- tmp = gfc_chainon_list (NULL_TREE, ptemp1);
- tmp = build_function_call_expr (gfor_fndecl_internal_free, tmp);
+ tmp = gfc_call_free (ptemp1);
gfc_add_expr_to_block (block, tmp);
}
}
tree tmp;
tree assign;
tree size;
- tree bytesize;
- tree tmpvar;
- tree sizevar;
- tree lenvar;
tree maskindex;
tree mask;
tree pmask;
gfc_se se;
gfc_code *c;
gfc_saved_var *saved_vars;
- iter_info *this_forall, *iter_tmp;
- forall_info *info, *forall_tmp;
-
- gfc_start_block (&block);
+ iter_info *this_forall;
+ forall_info *info;
+ bool need_mask;
+
+ /* Do nothing if the mask is false. */
+ if (code->expr
+ && code->expr->expr_type == EXPR_CONSTANT
+ && !code->expr->value.logical)
+ return build_empty_stmt ();
n = 0;
/* Count the FORALL index number. */
/* Allocate the space for info. */
info = (forall_info *) gfc_getmem (sizeof (forall_info));
+
+ gfc_start_block (&block);
+
n = 0;
for (fa = code->ext.forall_iterator; fa; fa = fa->next)
{
gfc_symbol *sym = fa->var->symtree->n.sym;
- /* allocate space for this_forall. */
+ /* Allocate space for this_forall. */
this_forall = (iter_info *) gfc_getmem (sizeof (iter_info));
/* Create a temporary variable for the FORALL index. */
/* Set the NEXT field of this_forall to NULL. */
this_forall->next = NULL;
/* Link this_forall to the info construct. */
- if (info->this_loop == NULL)
- info->this_loop = this_forall;
- else
+ if (info->this_loop)
{
- iter_tmp = info->this_loop;
+ iter_info *iter_tmp = info->this_loop;
while (iter_tmp->next != NULL)
iter_tmp = iter_tmp->next;
iter_tmp->next = this_forall;
}
+ else
+ info->this_loop = this_forall;
n++;
}
nvar = n;
- /* Work out the number of elements in the mask array. */
- tmpvar = NULL_TREE;
- lenvar = NULL_TREE;
+ /* Calculate the size needed for the current forall level. */
size = gfc_index_one_node;
- sizevar = NULL_TREE;
-
for (n = 0; n < nvar; n++)
{
- if (lenvar && TREE_TYPE (lenvar) != TREE_TYPE (start[n]))
- lenvar = NULL_TREE;
-
/* size = (end + step - start) / step. */
tmp = fold_build2 (MINUS_EXPR, TREE_TYPE (start[n]),
step[n], start[n]);
info->nvar = nvar;
info->size = size;
- /* Link the current forall level to nested_forall_info. */
- forall_tmp = nested_forall_info;
- if (forall_tmp == NULL)
- nested_forall_info = info;
- else
+ if (code->expr)
{
- while (forall_tmp->next_nest != NULL)
- forall_tmp = forall_tmp->next_nest;
- info->outer = forall_tmp;
- forall_tmp->next_nest = info;
+ /* If the mask is .true., consider the FORALL unconditional. */
+ if (code->expr->expr_type == EXPR_CONSTANT
+ && code->expr->value.logical)
+ need_mask = false;
+ else
+ need_mask = true;
}
+ else
+ need_mask = false;
- /* Copy the mask into a temporary variable if required.
- For now we assume a mask temporary is needed. */
- if (code->expr)
+ /* First we need to allocate the mask. */
+ if (need_mask)
{
- /* As the mask array can be very big, prefer compact
- boolean types. */
- tree smallest_boolean_type_node
- = gfc_get_logical_type (gfc_logical_kinds[0].kind);
-
- /* Allocate the mask temporary. */
- bytesize = fold_build2 (MULT_EXPR, gfc_array_index_type, size,
- TYPE_SIZE_UNIT (smallest_boolean_type_node));
-
- mask = gfc_do_allocate (bytesize, size, &pmask, &block,
- smallest_boolean_type_node);
-
+ /* As the mask array can be very big, prefer compact boolean types. */
+ tree mask_type = gfc_get_logical_type (gfc_logical_kinds[0].kind);
+ mask = allocate_temp_for_forall_nest (nested_forall_info, mask_type,
+ size, NULL, &block, &pmask);
maskindex = gfc_create_var_np (gfc_array_index_type, "mi");
+
/* Record them in the info structure. */
- info->pmask = pmask;
- info->mask = mask;
info->maskindex = maskindex;
+ info->mask = mask;
+ }
+ else
+ {
+ /* No mask was specified. */
+ maskindex = NULL_TREE;
+ mask = pmask = NULL_TREE;
+ }
+
+ /* Link the current forall level to nested_forall_info. */
+ info->prev_nest = nested_forall_info;
+ nested_forall_info = info;
+
+ /* Copy the mask into a temporary variable if required.
+ For now we assume a mask temporary is needed. */
+ if (need_mask)
+ {
+ /* As the mask array can be very big, prefer compact boolean types. */
+ tree mask_type = gfc_get_logical_type (gfc_logical_kinds[0].kind);
gfc_add_modify_expr (&block, maskindex, gfc_index_zero_node);
gfc_add_block_to_block (&body, &se.pre);
/* Store the mask. */
- se.expr = convert (smallest_boolean_type_node, se.expr);
+ se.expr = convert (mask_type, se.expr);
- if (pmask)
- tmp = build_fold_indirect_ref (mask);
- else
- tmp = mask;
- tmp = gfc_build_array_ref (tmp, maskindex);
+ tmp = gfc_build_array_ref (mask, maskindex);
gfc_add_modify_expr (&body, tmp, se.expr);
/* Advance to the next mask element. */
tmp = build2 (PLUS_EXPR, gfc_array_index_type,
- maskindex, gfc_index_one_node);
+ maskindex, gfc_index_one_node);
gfc_add_modify_expr (&body, maskindex, tmp);
/* Generate the loops. */
tmp = gfc_finish_block (&body);
- tmp = gfc_trans_nested_forall_loop (info, tmp, 0, 0);
+ tmp = gfc_trans_nested_forall_loop (info, tmp, 0);
gfc_add_expr_to_block (&block, tmp);
}
- else
- {
- /* No mask was specified. */
- maskindex = NULL_TREE;
- mask = pmask = NULL_TREE;
- }
c = code->block->next;
/* Temporaries due to array assignment data dependencies introduce
no end of problems. */
if (need_temp)
- gfc_trans_assign_need_temp (c->expr, c->expr2, NULL,
+ gfc_trans_assign_need_temp (c->expr, c->expr2, NULL, false,
nested_forall_info, &block);
else
{
/* Use the normal assignment copying routines. */
- assign = gfc_trans_assignment (c->expr, c->expr2);
+ assign = gfc_trans_assignment (c->expr, c->expr2, false);
/* Generate body and loops. */
- tmp = gfc_trans_nested_forall_loop (nested_forall_info, assign, 1, 1);
+ tmp = gfc_trans_nested_forall_loop (nested_forall_info,
+ assign, 1);
gfc_add_expr_to_block (&block, tmp);
}
case EXEC_WHERE:
/* Translate WHERE or WHERE construct nested in FORALL. */
- gfc_trans_where_2 (c, NULL, nested_forall_info, &block);
+ gfc_trans_where_2 (c, NULL, false, nested_forall_info, &block);
break;
/* Pointer assignment inside FORALL. */
assign = gfc_trans_pointer_assignment (c->expr, c->expr2);
/* Generate body and loops. */
- tmp = gfc_trans_nested_forall_loop (nested_forall_info, assign,
- 1, 1);
+ tmp = gfc_trans_nested_forall_loop (nested_forall_info,
+ assign, 1);
gfc_add_expr_to_block (&block, tmp);
}
break;
/* Explicit subroutine calls are prevented by the frontend but interface
assignments can legitimately produce them. */
- case EXEC_CALL:
- assign = gfc_trans_call (c);
- tmp = gfc_trans_nested_forall_loop (nested_forall_info, assign, 1, 1);
+ case EXEC_ASSIGN_CALL:
+ assign = gfc_trans_call (c, true);
+ tmp = gfc_trans_nested_forall_loop (nested_forall_info, assign, 1);
gfc_add_expr_to_block (&block, tmp);
break;
gfc_free (varexpr);
gfc_free (saved_vars);
+ /* Free the space for this forall_info. */
+ gfc_free (info);
+
if (pmask)
{
/* Free the temporary for the mask. */
- tmp = gfc_chainon_list (NULL_TREE, pmask);
- tmp = build_function_call_expr (gfor_fndecl_internal_free, tmp);
+ tmp = gfc_call_free (pmask);
gfc_add_expr_to_block (&block, tmp);
}
if (maskindex)
needed by the WHERE mask expression multiplied by the iterator number of
the nested forall.
ME is the WHERE mask expression.
- MASK is the current execution mask upon input.
+ MASK is the current execution mask upon input, whose sense may or may
+ not be inverted as specified by the INVERT argument.
CMASK is the updated execution mask on output, or NULL if not required.
PMASK is the pending execution mask on output, or NULL if not required.
BLOCK is the block in which to place the condition evaluation loops. */
static void
gfc_evaluate_where_mask (gfc_expr * me, forall_info * nested_forall_info,
- tree mask, tree cmask, tree pmask,
+ tree mask, bool invert, tree cmask, tree pmask,
tree mask_type, stmtblock_t * block)
{
tree tmp, tmp1;
gfc_conv_expr (&rse, me);
}
- /* Variable to evalate mask condition. */
+ /* Variable to evaluate mask condition. */
cond = gfc_create_var (mask_type, "cond");
if (mask && (cmask || pmask))
mtmp = gfc_create_var (mask_type, "mask");
if (mask && (cmask || pmask))
{
tmp = gfc_build_array_ref (mask, count);
+ if (invert)
+ tmp = fold_build1 (TRUTH_NOT_EXPR, mask_type, tmp);
gfc_add_modify_expr (&body1, mtmp, tmp);
}
tmp1 = gfc_finish_block (&body);
/* If the WHERE construct is inside FORALL, fill the full temporary. */
if (nested_forall_info != NULL)
- tmp1 = gfc_trans_nested_forall_loop (nested_forall_info, tmp1, 1, 1);
+ tmp1 = gfc_trans_nested_forall_loop (nested_forall_info, tmp1, 1);
gfc_add_expr_to_block (block, tmp1);
}
/* Translate an assignment statement in a WHERE statement or construct
statement. The MASK expression is used to control which elements
- of EXPR1 shall be assigned. */
+ of EXPR1 shall be assigned. The sense of MASK is specified by
+ INVERT. */
static tree
-gfc_trans_where_assign (gfc_expr *expr1, gfc_expr *expr2, tree mask,
- tree count1, tree count2)
+gfc_trans_where_assign (gfc_expr *expr1, gfc_expr *expr2,
+ tree mask, bool invert,
+ tree count1, tree count2,
+ gfc_symbol *sym)
{
gfc_se lse;
gfc_se rse;
tree tmp;
stmtblock_t block;
stmtblock_t body;
- tree index, maskexpr, tmp1;
+ tree index, maskexpr;
#if 0
/* TODO: handle this special case.
else
gfc_conv_expr (&lse, expr1);
- /* Form the mask expression according to the mask tree list. */
+ /* Form the mask expression according to the mask. */
index = count1;
- tmp = mask;
- if (tmp != NULL)
- maskexpr = gfc_build_array_ref (tmp, index);
- else
- maskexpr = NULL;
+ maskexpr = gfc_build_array_ref (mask, index);
+ if (invert)
+ maskexpr = fold_build1 (TRUTH_NOT_EXPR, TREE_TYPE (maskexpr), maskexpr);
- tmp = TREE_CHAIN (tmp);
- while (tmp)
- {
- tmp1 = gfc_build_array_ref (tmp, index);
- maskexpr = build2 (TRUTH_AND_EXPR, TREE_TYPE (tmp1), maskexpr, tmp1);
- tmp = TREE_CHAIN (tmp);
- }
/* Use the scalar assignment as is. */
- tmp = gfc_trans_scalar_assign (&lse, &rse, expr1->ts.type);
+ if (sym == NULL)
+ tmp = gfc_trans_scalar_assign (&lse, &rse, expr1->ts,
+ loop.temp_ss != NULL, false);
+ else
+ tmp = gfc_conv_operator_assign (&lse, &rse, sym);
+
tmp = build3_v (COND_EXPR, maskexpr, tmp, build_empty_stmt ());
gfc_add_expr_to_block (&body, tmp);
/* Form the mask expression according to the mask tree list. */
index = count2;
- tmp = mask;
- if (tmp != NULL)
- maskexpr = gfc_build_array_ref (tmp, index);
- else
- maskexpr = NULL;
+ maskexpr = gfc_build_array_ref (mask, index);
+ if (invert)
+ maskexpr = fold_build1 (TRUTH_NOT_EXPR, TREE_TYPE (maskexpr),
+ maskexpr);
- tmp = TREE_CHAIN (tmp);
- while (tmp)
- {
- tmp1 = gfc_build_array_ref (tmp, index);
- maskexpr = build2 (TRUTH_AND_EXPR, TREE_TYPE (tmp1),
- maskexpr, tmp1);
- tmp = TREE_CHAIN (tmp);
- }
/* Use the scalar assignment as is. */
- tmp = gfc_trans_scalar_assign (&lse, &rse, expr1->ts.type);
+ tmp = gfc_trans_scalar_assign (&lse, &rse, expr1->ts, false, false);
tmp = build3_v (COND_EXPR, maskexpr, tmp, build_empty_stmt ());
gfc_add_expr_to_block (&body, tmp);
MASK is the control mask. */
static void
-gfc_trans_where_2 (gfc_code * code, tree mask,
+gfc_trans_where_2 (gfc_code * code, tree mask, bool invert,
forall_info * nested_forall_info, stmtblock_t * block)
{
stmtblock_t inner_size_body;
gfc_code *cnext;
tree tmp;
tree count1, count2;
+ bool need_cmask;
+ bool need_pmask;
int need_temp;
tree pcmask = NULL_TREE;
tree ppmask = NULL_TREE;
tree cmask = NULL_TREE;
tree pmask = NULL_TREE;
+ gfc_actual_arglist *arg;
/* the WHERE statement or the WHERE construct statement. */
cblock = code->block;
- /* Calculate the size of temporary needed by the mask-expr. */
- gfc_init_block (&inner_size_body);
- inner_size = compute_inner_temp_size (cblock->expr, cblock->expr,
- &inner_size_body, &lss, &rss);
-
- /* Calculate the total size of temporary needed. */
- size = compute_overall_iter_number (nested_forall_info, inner_size,
- &inner_size_body, block);
-
/* As the mask array can be very big, prefer compact boolean types. */
mask_type = gfc_get_logical_type (gfc_logical_kinds[0].kind);
- /* Allocate temporary for where mask. */
- cmask = allocate_temp_for_forall_nest_1 (mask_type, size, block, &pcmask);
-
- if (cblock->block)
+ /* Determine which temporary masks are needed. */
+ if (!cblock->block)
+ {
+ /* One clause: No ELSEWHEREs. */
+ need_cmask = (cblock->next != 0);
+ need_pmask = false;
+ }
+ else if (cblock->block->block)
+ {
+ /* Three or more clauses: Conditional ELSEWHEREs. */
+ need_cmask = true;
+ need_pmask = true;
+ }
+ else if (cblock->next)
+ {
+ /* Two clauses, the first non-empty. */
+ need_cmask = true;
+ need_pmask = (mask != NULL_TREE
+ && cblock->block->next != 0);
+ }
+ else if (!cblock->block->next)
+ {
+ /* Two clauses, both empty. */
+ need_cmask = false;
+ need_pmask = false;
+ }
+ /* Two clauses, the first empty, the second non-empty. */
+ else if (mask)
{
- /* Allocate temporary for !mask. */
- pmask = allocate_temp_for_forall_nest_1 (mask_type, size, block,
- &ppmask);
+ need_cmask = (cblock->block->expr != 0);
+ need_pmask = true;
}
else
{
- ppmask = NULL_TREE;
- pmask = NULL_TREE;
+ need_cmask = true;
+ need_pmask = false;
+ }
+
+ if (need_cmask || need_pmask)
+ {
+ /* Calculate the size of temporary needed by the mask-expr. */
+ gfc_init_block (&inner_size_body);
+ inner_size = compute_inner_temp_size (cblock->expr, cblock->expr,
+ &inner_size_body, &lss, &rss);
+
+ /* Calculate the total size of temporary needed. */
+ size = compute_overall_iter_number (nested_forall_info, inner_size,
+ &inner_size_body, block);
+
+ /* Allocate temporary for WHERE mask if needed. */
+ if (need_cmask)
+ cmask = allocate_temp_for_forall_nest_1 (mask_type, size, block,
+ &pcmask);
+
+ /* Allocate temporary for !mask if needed. */
+ if (need_pmask)
+ pmask = allocate_temp_for_forall_nest_1 (mask_type, size, block,
+ &ppmask);
}
while (cblock)
{
+ /* Each time around this loop, the where clause is conditional
+ on the value of mask and invert, which are updated at the
+ bottom of the loop. */
+
/* Has mask-expr. */
if (cblock->expr)
{
- /* If this is the last clause of the WHERE construct, then
+ /* Ensure that the WHERE mask will be evaluated exactly once.
+ If there are no statements in this WHERE/ELSEWHERE clause,
+ then we don't need to update the control mask (cmask).
+ If this is the last clause of the WHERE construct, then
we don't need to update the pending control mask (pmask). */
- if (! cblock->block)
- pmask = NULL_TREE;
-
- /* Ensure that the WHERE mask be evaluated only once. */
- gfc_evaluate_where_mask (cblock->expr, nested_forall_info,
- mask, cmask, pmask, mask_type, block);
+ if (mask)
+ gfc_evaluate_where_mask (cblock->expr, nested_forall_info,
+ mask, invert,
+ cblock->next ? cmask : NULL_TREE,
+ cblock->block ? pmask : NULL_TREE,
+ mask_type, block);
+ else
+ gfc_evaluate_where_mask (cblock->expr, nested_forall_info,
+ NULL_TREE, false,
+ (cblock->next || cblock->block)
+ ? cmask : NULL_TREE,
+ NULL_TREE, mask_type, block);
+ invert = false;
}
- /* It's a elsewhere-stmt. No mask-expr is present. */
+ /* It's a final elsewhere-stmt. No mask-expr is present. */
else
cmask = mask;
+ /* The body of this where clause are controlled by cmask with
+ sense specified by invert. */
+
/* Get the assignment statement of a WHERE statement, or the first
statement in where-body-construct of a WHERE construct. */
cnext = cblock->next;
switch (cnext->op)
{
/* WHERE assignment statement. */
+ case EXEC_ASSIGN_CALL:
+
+ arg = cnext->ext.actual;
+ expr1 = expr2 = NULL;
+ for (; arg; arg = arg->next)
+ {
+ if (!arg->expr)
+ continue;
+ if (expr1 == NULL)
+ expr1 = arg->expr;
+ else
+ expr2 = arg->expr;
+ }
+ goto evaluate;
+
case EXEC_ASSIGN:
expr1 = cnext->expr;
expr2 = cnext->expr2;
+ evaluate:
if (nested_forall_info != NULL)
{
need_temp = gfc_check_dependency (expr1, expr2, 0);
- if (need_temp)
- gfc_trans_assign_need_temp (expr1, expr2, cmask,
+ if (need_temp && cnext->op != EXEC_ASSIGN_CALL)
+ gfc_trans_assign_need_temp (expr1, expr2,
+ cmask, invert,
nested_forall_info, block);
else
{
gfc_add_modify_expr (block, count1, gfc_index_zero_node);
gfc_add_modify_expr (block, count2, gfc_index_zero_node);
- tmp = gfc_trans_where_assign (expr1, expr2, cmask,
- count1, count2);
+ tmp = gfc_trans_where_assign (expr1, expr2,
+ cmask, invert,
+ count1, count2,
+ cnext->resolved_sym);
tmp = gfc_trans_nested_forall_loop (nested_forall_info,
- tmp, 1, 1);
+ tmp, 1);
gfc_add_expr_to_block (block, tmp);
}
}
gfc_add_modify_expr (block, count1, gfc_index_zero_node);
gfc_add_modify_expr (block, count2, gfc_index_zero_node);
- tmp = gfc_trans_where_assign (expr1, expr2, cmask,
- count1, count2);
+ tmp = gfc_trans_where_assign (expr1, expr2,
+ cmask, invert,
+ count1, count2,
+ cnext->resolved_sym);
gfc_add_expr_to_block (block, tmp);
}
/* WHERE or WHERE construct is part of a where-body-construct. */
case EXEC_WHERE:
- /* Ensure that MASK is not modified by next gfc_trans_where_2. */
- gfc_trans_where_2 (cnext, cmask, nested_forall_info, block);
+ gfc_trans_where_2 (cnext, cmask, invert,
+ nested_forall_info, block);
break;
default:
}
/* The next masked-elsewhere-stmt, elsewhere-stmt, or end-where-stmt. */
cblock = cblock->block;
- mask = pmask;
+ if (mask == NULL_TREE)
+ {
+ /* If we're the initial WHERE, we can simply invert the sense
+ of the current mask to obtain the "mask" for the remaining
+ ELSEWHEREs. */
+ invert = true;
+ mask = cmask;
+ }
+ else
+ {
+ /* Otherwise, for nested WHERE's we need to use the pending mask. */
+ invert = false;
+ mask = pmask;
+ }
}
/* If we allocated a pending mask array, deallocate it now. */
if (ppmask)
{
- tree args = gfc_chainon_list (NULL_TREE, ppmask);
- tmp = build_function_call_expr (gfor_fndecl_internal_free, args);
+ tmp = gfc_call_free (ppmask);
gfc_add_expr_to_block (block, tmp);
}
/* If we allocated a current mask array, deallocate it now. */
if (pcmask)
{
- tree args = gfc_chainon_list (NULL_TREE, pcmask);
- tmp = build_function_call_expr (gfor_fndecl_internal_free, args);
+ tmp = gfc_call_free (pcmask);
gfc_add_expr_to_block (block, tmp);
}
}
gfc_conv_expr (&edse, edst);
}
- tstmt = gfc_trans_scalar_assign (&tdse, &tsse, tdst->ts.type);
- estmt = eblock ? gfc_trans_scalar_assign (&edse, &esse, edst->ts.type)
+ tstmt = gfc_trans_scalar_assign (&tdse, &tsse, tdst->ts, false, false);
+ estmt = eblock ? gfc_trans_scalar_assign (&edse, &esse, edst->ts, false, false)
: build_empty_stmt ();
tmp = build3_v (COND_EXPR, cexpr, tstmt, estmt);
gfc_add_expr_to_block (&body, tmp);
gfc_start_block (&block);
- gfc_trans_where_2 (code, NULL, NULL, &block);
+ gfc_trans_where_2 (code, NULL, false, NULL, &block);
return gfc_finish_block (&block);
}
gfc_se se;
tree tmp;
tree parm;
- gfc_ref *ref;
tree stat;
tree pstat;
tree error_label;
TREE_USED (error_label) = 1;
}
else
- {
- pstat = integer_zero_node;
- stat = error_label = NULL_TREE;
- }
-
+ pstat = stat = error_label = NULL_TREE;
for (al = code->ext.alloc_list; al != NULL; al = al->next)
{
se.descriptor_only = 1;
gfc_conv_expr (&se, expr);
- ref = expr->ref;
-
- /* Find the last reference in the chain. */
- while (ref && ref->next != NULL)
- {
- gcc_assert (ref->type != REF_ARRAY || ref->u.ar.type == AR_ELEMENT);
- ref = ref->next;
- }
-
- if (ref != NULL && ref->type == REF_ARRAY)
- {
- /* An array. */
- gfc_array_allocate (&se, ref, pstat);
- }
- else
+ if (!gfc_array_allocate (&se, expr, pstat))
{
/* A scalar or derived type. */
- tree val;
-
- val = gfc_create_var (ppvoid_type_node, "ptr");
- tmp = gfc_build_addr_expr (ppvoid_type_node, se.expr);
- gfc_add_modify_expr (&se.pre, val, tmp);
-
tmp = TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (se.expr)));
if (expr->ts.type == BT_CHARACTER && tmp == NULL_TREE)
tmp = se.string_length;
- parm = gfc_chainon_list (NULL_TREE, val);
- parm = gfc_chainon_list (parm, tmp);
- parm = gfc_chainon_list (parm, pstat);
- tmp = build_function_call_expr (gfor_fndecl_allocate, parm);
+ tmp = gfc_allocate_with_status (&se.pre, tmp, pstat);
+ tmp = build2 (MODIFY_EXPR, void_type_node, se.expr,
+ fold_convert (TREE_TYPE (se.expr), tmp));
gfc_add_expr_to_block (&se.pre, tmp);
if (code->expr)
parm, tmp, build_empty_stmt ());
gfc_add_expr_to_block (&se.pre, tmp);
}
+
+ if (expr->ts.type == BT_DERIVED && expr->ts.derived->attr.alloc_comp)
+ {
+ tmp = build_fold_indirect_ref (se.expr);
+ tmp = gfc_nullify_alloc_comp (expr->ts.derived, tmp, 0);
+ gfc_add_expr_to_block (&se.pre, tmp);
+ }
+
}
tmp = gfc_finish_block (&se.pre);
gfc_se se;
gfc_alloc *al;
gfc_expr *expr;
- tree apstat, astat, parm, pstat, stat, tmp, type, var;
+ tree apstat, astat, pstat, stat, tmp;
stmtblock_t block;
gfc_start_block (&block);
gfc_add_modify_expr (&block, astat, build_int_cst (TREE_TYPE (astat), 0));
}
else
- {
- pstat = apstat = null_pointer_node;
- stat = astat = NULL_TREE;
- }
+ pstat = apstat = stat = astat = NULL_TREE;
for (al = code->ext.alloc_list; al != NULL; al = al->next)
{
se.descriptor_only = 1;
gfc_conv_expr (&se, expr);
+ if (expr->ts.type == BT_DERIVED
+ && expr->ts.derived->attr.alloc_comp)
+ {
+ gfc_ref *ref;
+ gfc_ref *last = NULL;
+ for (ref = expr->ref; ref; ref = ref->next)
+ if (ref->type == REF_COMPONENT)
+ last = ref;
+
+ /* Do not deallocate the components of a derived type
+ ultimate pointer component. */
+ if (!(last && last->u.c.component->pointer)
+ && !(!last && expr->symtree->n.sym->attr.pointer))
+ {
+ tmp = gfc_deallocate_alloc_comp (expr->ts.derived, se.expr,
+ expr->rank);
+ gfc_add_expr_to_block (&se.pre, tmp);
+ }
+ }
+
if (expr->rank)
tmp = gfc_array_deallocate (se.expr, pstat);
else
{
- type = build_pointer_type (TREE_TYPE (se.expr));
- var = gfc_create_var (type, "ptr");
- tmp = gfc_build_addr_expr (type, se.expr);
- gfc_add_modify_expr (&se.pre, var, tmp);
-
- parm = gfc_chainon_list (NULL_TREE, var);
- parm = gfc_chainon_list (parm, pstat);
- tmp = build_function_call_expr (gfor_fndecl_deallocate, parm);
+ tmp = gfc_deallocate_with_status (se.expr, pstat, false);
+ gfc_add_expr_to_block (&se.pre, tmp);
+
+ tmp = build2 (MODIFY_EXPR, void_type_node,
+ se.expr, build_int_cst (TREE_TYPE (se.expr), 0));
}
gfc_add_expr_to_block (&se.pre, tmp);
OSDN Git Service
