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/*
* Copyright 2010-2011 INRIA Saclay
*
* Use of this software is governed by the MIT license
*
* Written by Sven Verdoolaege, INRIA Saclay - Ile-de-France,
* Parc Club Orsay Universite, ZAC des vignes, 4 rue Jacques Monod,
* 91893 Orsay, France
*/
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <isl/set.h>
#include <isl/map.h>
#include <isl/constraint.h>
#include "schedule.h"
/* Add parameters with identifiers "ids" to "set".
*/
static __isl_give isl_set *add_params(__isl_take isl_set *set,
__isl_keep isl_id_list *ids)
{
int i, n;
unsigned nparam;
n = isl_id_list_n_id(ids);
nparam = isl_set_dim(set, isl_dim_param);
set = isl_set_add_dims(set, isl_dim_param, n);
for (i = 0; i < n; ++i) {
isl_id *id;
id = isl_id_list_get_id(ids, i);
set = isl_set_set_dim_id(set, isl_dim_param, nparam + i, id);
}
return set;
}
/* Equate the dimensions of "set" starting at "first" to
* freshly created parameters with identifiers "ids".
* The number of equated dimensions is equal to the number of elements in "ids".
*/
static __isl_give isl_set *parametrize(__isl_take isl_set *set,
int first, __isl_keep isl_id_list *ids)
{
int i, n;
unsigned nparam;
nparam = isl_set_dim(set, isl_dim_param);
set = add_params(set, ids);
n = isl_id_list_n_id(ids);
for (i = 0; i < n; ++i)
set = isl_set_equate(set, isl_dim_param, nparam + i,
isl_dim_set, first + i);
return set;
}
/* Given a parameter space "space", create a set of dimension "len"
* of which the dimensions starting at "first" are equated to
* freshly created parameters with identifiers "ids".
*/
__isl_give isl_set *parametrization(__isl_take isl_space *space,
int len, int first, __isl_keep isl_id_list *ids)
{
isl_set *set;
space = isl_space_set_from_params(space);
space = isl_space_add_dims(space, isl_dim_set, len);
set = isl_set_universe(space);
return parametrize(set, first, ids);
}
/* Load and return a schedule from a file called "filename".
*/
static __isl_give isl_schedule *load_schedule(isl_ctx *ctx,
const char *filename)
{
FILE *file;
isl_schedule *schedule;
file = fopen(filename, "r");
if (!file) {
fprintf(stderr, "Unable to open '%s' for reading\n", filename);
return NULL;
}
schedule = isl_schedule_read_from_file(ctx, file);
fclose(file);
return schedule;
}
/* Save the schedule "schedule" to a file called "filename".
* The schedule is printed in block style.
*/
static void save_schedule(__isl_keep isl_schedule *schedule,
const char *filename)
{
FILE *file;
isl_ctx *ctx;
isl_printer *p;
if (!schedule)
return;
file = fopen(filename, "w");
if (!file) {
fprintf(stderr, "Unable to open '%s' for writing\n", filename);
return;
}
ctx = isl_schedule_get_ctx(schedule);
p = isl_printer_to_file(ctx, file);
p = isl_printer_set_yaml_style(p, ISL_YAML_STYLE_BLOCK);
p = isl_printer_print_schedule(p, schedule);
isl_printer_free(p);
fclose(file);
}
/* Obtain a schedule, either by reading it form a file
* or by computing it using "compute".
* Also take care of saving the computed schedule and/or
* dumping the obtained schedule if requested by the user.
*/
__isl_give isl_schedule *ppcg_get_schedule(isl_ctx *ctx,
struct ppcg_options *options,
__isl_give isl_schedule *(*compute)(void *user), void *user)
{
isl_schedule *schedule;
if (options->load_schedule_file) {
schedule = load_schedule(ctx, options->load_schedule_file);
} else {
schedule = compute(user);
if (options->save_schedule_file)
save_schedule(schedule, options->save_schedule_file);
}
if (options->debug->dump_schedule)
isl_schedule_dump(schedule);
return schedule;
}
/* Mark all dimensions in the band node "node" to be of "type".
*/
__isl_give isl_schedule_node *ppcg_set_schedule_node_type(
__isl_take isl_schedule_node *node, enum isl_ast_loop_type type)
{
int i, n;
n = isl_schedule_node_band_n_member(node);
for (i = 0; i < n; ++i)
node = isl_schedule_node_band_member_set_ast_loop_type(node, i,
type);
return node;
}
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