/*
* Copyright 2012-2013 Ecole Normale Superieure
*
* Use of this software is governed by the MIT license
*
* Written by Sven Verdoolaege,
* Ecole Normale Superieure, 45 rue d’Ulm, 75230 Paris, France
*/
#include <isl_ast_private.h>
#undef BASE
#define BASE ast_expr
#include <isl_list_templ.c>
#undef BASE
#define BASE ast_node
#include <isl_list_templ.c>
isl_ctx *isl_ast_print_options_get_ctx(
__isl_keep isl_ast_print_options *options)
{
return options ? options->ctx : NULL;
}
__isl_give isl_ast_print_options *isl_ast_print_options_alloc(isl_ctx *ctx)
{
isl_ast_print_options *options;
options = isl_calloc_type(ctx, isl_ast_print_options);
if (!options)
return NULL;
options->ctx = ctx;
isl_ctx_ref(ctx);
options->ref = 1;
return options;
}
__isl_give isl_ast_print_options *isl_ast_print_options_dup(
__isl_keep isl_ast_print_options *options)
{
isl_ctx *ctx;
isl_ast_print_options *dup;
if (!options)
return NULL;
ctx = isl_ast_print_options_get_ctx(options);
dup = isl_ast_print_options_alloc(ctx);
if (!dup)
return NULL;
dup->print_for = options->print_for;
dup->print_for_user = options->print_for_user;
dup->print_user = options->print_user;
dup->print_user_user = options->print_user_user;
return dup;
}
__isl_give isl_ast_print_options *isl_ast_print_options_cow(
__isl_take isl_ast_print_options *options)
{
if (!options)
return NULL;
if (options->ref == 1)
return options;
options->ref--;
return isl_ast_print_options_dup(options);
}
__isl_give isl_ast_print_options *isl_ast_print_options_copy(
__isl_keep isl_ast_print_options *options)
{
if (!options)
return NULL;
options->ref++;
return options;
}
__isl_null isl_ast_print_options *isl_ast_print_options_free(
__isl_take isl_ast_print_options *options)
{
if (!options)
return NULL;
if (--options->ref > 0)
return NULL;
isl_ctx_deref(options->ctx);
free(options);
return NULL;
}
/* Set the print_user callback of "options" to "print_user".
*
* If this callback is set, then it used to print user nodes in the AST.
* Otherwise, the expression associated to the user node is printed.
*/
__isl_give isl_ast_print_options *isl_ast_print_options_set_print_user(
__isl_take isl_ast_print_options *options,
__isl_give isl_printer *(*print_user)(__isl_take isl_printer *p,
__isl_take isl_ast_print_options *options,
__isl_keep isl_ast_node *node, void *user),
void *user)
{
options = isl_ast_print_options_cow(options);
if (!options)
return NULL;
options->print_user = print_user;
options->print_user_user = user;
return options;
}
/* Set the print_for callback of "options" to "print_for".
*
* If this callback is set, then it used to print for nodes in the AST.
*/
__isl_give isl_ast_print_options *isl_ast_print_options_set_print_for(
__isl_take isl_ast_print_options *options,
__isl_give isl_printer *(*print_for)(__isl_take isl_printer *p,
__isl_take isl_ast_print_options *options,
__isl_keep isl_ast_node *node, void *user),
void *user)
{
options = isl_ast_print_options_cow(options);
if (!options)
return NULL;
options->print_for = print_for;
options->print_for_user = user;
return options;
}
__isl_give isl_ast_expr *isl_ast_expr_copy(__isl_keep isl_ast_expr *expr)
{
if (!expr)
return NULL;
expr->ref++;
return expr;
}
__isl_give isl_ast_expr *isl_ast_expr_dup(__isl_keep isl_ast_expr *expr)
{
int i;
isl_ctx *ctx;
isl_ast_expr *dup;
if (!expr)
return NULL;
ctx = isl_ast_expr_get_ctx(expr);
switch (expr->type) {
case isl_ast_expr_int:
dup = isl_ast_expr_from_val(isl_val_copy(expr->u.v));
break;
case isl_ast_expr_id:
dup = isl_ast_expr_from_id(isl_id_copy(expr->u.id));
break;
case isl_ast_expr_op:
dup = isl_ast_expr_alloc_op(ctx,
expr->u.op.op, expr->u.op.n_arg);
if (!dup)
return NULL;
for (i = 0; i < expr->u.op.n_arg; ++i)
dup->u.op.args[i] =
isl_ast_expr_copy(expr->u.op.args[i]);
break;
case isl_ast_expr_error:
dup = NULL;
}
if (!dup)
return NULL;
return dup;
}
__isl_give isl_ast_expr *isl_ast_expr_cow(__isl_take isl_ast_expr *expr)
{
if (!expr)
return NULL;
if (expr->ref == 1)
return expr;
expr->ref--;
return isl_ast_expr_dup(expr);
}
__isl_null isl_ast_expr *isl_ast_expr_free(__isl_take isl_ast_expr *expr)
{
int i;
if (!expr)
return NULL;
if (--expr->ref > 0)
return NULL;
isl_ctx_deref(expr->ctx);
switch (expr->type) {
case isl_ast_expr_int:
isl_val_free(expr->u.v);
break;
case isl_ast_expr_id:
isl_id_free(expr->u.id);
break;
case isl_ast_expr_op:
if (expr->u.op.args)
for (i = 0; i < expr->u.op.n_arg; ++i)
isl_ast_expr_free(expr->u.op.args[i]);
free(expr->u.op.args);
break;
case isl_ast_expr_error:
break;
}
free(expr);
return NULL;
}
isl_ctx *isl_ast_expr_get_ctx(__isl_keep isl_ast_expr *expr)
{
return expr ? expr->ctx : NULL;
}
enum isl_ast_expr_type isl_ast_expr_get_type(__isl_keep isl_ast_expr *expr)
{
return expr ? expr->type : isl_ast_expr_error;
}
/* Return the integer value represented by "expr".
*/
__isl_give isl_val *isl_ast_expr_get_val(__isl_keep isl_ast_expr *expr)
{
if (!expr)
return NULL;
if (expr->type != isl_ast_expr_int)
isl_die(isl_ast_expr_get_ctx(expr), isl_error_invalid,
"expression not an int", return NULL);
return isl_val_copy(expr->u.v);
}
__isl_give isl_id *isl_ast_expr_get_id(__isl_keep isl_ast_expr *expr)
{
if (!expr)
return NULL;
if (expr->type != isl_ast_expr_id)
isl_die(isl_ast_expr_get_ctx(expr), isl_error_invalid,
"expression not an identifier", return NULL);
return isl_id_copy(expr->u.id);
}
enum isl_ast_op_type isl_ast_expr_get_op_type(__isl_keep isl_ast_expr *expr)
{
if (!expr)
return isl_ast_op_error;
if (expr->type != isl_ast_expr_op)
isl_die(isl_ast_expr_get_ctx(expr), isl_error_invalid,
"expression not an operation", return isl_ast_op_error);
return expr->u.op.op;
}
int isl_ast_expr_get_op_n_arg(__isl_keep isl_ast_expr *expr)
{
if (!expr)
return -1;
if (expr->type != isl_ast_expr_op)
isl_die(isl_ast_expr_get_ctx(expr), isl_error_invalid,
"expression not an operation", return -1);
return expr->u.op.n_arg;
}
__isl_give isl_ast_expr *isl_ast_expr_get_op_arg(__isl_keep isl_ast_expr *expr,
int pos)
{
if (!expr)
return NULL;
if (expr->type != isl_ast_expr_op)
isl_die(isl_ast_expr_get_ctx(expr), isl_error_invalid,
"expression not an operation", return NULL);
if (pos < 0 || pos >= expr->u.op.n_arg)
isl_die(isl_ast_expr_get_ctx(expr), isl_error_invalid,
"index out of bounds", return NULL);
return isl_ast_expr_copy(expr->u.op.args[pos]);
}
/* Replace the argument at position "pos" of "expr" by "arg".
*/
__isl_give isl_ast_expr *isl_ast_expr_set_op_arg(__isl_take isl_ast_expr *expr,
int pos, __isl_take isl_ast_expr *arg)
{
expr = isl_ast_expr_cow(expr);
if (!expr || !arg)
goto error;
if (expr->type != isl_ast_expr_op)
isl_die(isl_ast_expr_get_ctx(expr), isl_error_invalid,
"expression not an operation", goto error);
if (pos < 0 || pos >= expr->u.op.n_arg)
isl_die(isl_ast_expr_get_ctx(expr), isl_error_invalid,
"index out of bounds", goto error);
isl_ast_expr_free(expr->u.op.args[pos]);
expr->u.op.args[pos] = arg;
return expr;
error:
isl_ast_expr_free(arg);
return isl_ast_expr_free(expr);
}
/* Is "expr1" equal to "expr2"?
*/
int isl_ast_expr_is_equal(__isl_keep isl_ast_expr *expr1,
__isl_keep isl_ast_expr *expr2)
{
int i;
if (!expr1 || !expr2)
return -1;
if (expr1 == expr2)
return 1;
if (expr1->type != expr2->type)
return 0;
switch (expr1->type) {
case isl_ast_expr_int:
return isl_val_eq(expr1->u.v, expr2->u.v);
case isl_ast_expr_id:
return expr1->u.id == expr2->u.id;
case isl_ast_expr_op:
if (expr1->u.op.op != expr2->u.op.op)
return 0;
if (expr1->u.op.n_arg != expr2->u.op.n_arg)
return 0;
for (i = 0; i < expr1->u.op.n_arg; ++i) {
int equal;
equal = isl_ast_expr_is_equal(expr1->u.op.args[i],
expr2->u.op.args[i]);
return 0;
if (equal < 0 || !equal)
return equal;
}
return 1;
case isl_ast_expr_error:
return -1;
}
}
/* Create a new operation expression of operation type "op",
* with "n_arg" as yet unspecified arguments.
*/
__isl_give isl_ast_expr *isl_ast_expr_alloc_op(isl_ctx *ctx,
enum isl_ast_op_type op, int n_arg)
{
isl_ast_expr *expr;
expr = isl_calloc_type(ctx, isl_ast_expr);
if (!expr)
return NULL;
expr->ctx = ctx;
isl_ctx_ref(ctx);
expr->ref = 1;
expr->type = isl_ast_expr_op;
expr->u.op.op = op;
expr->u.op.n_arg = n_arg;
expr->u.op.args = isl_calloc_array(ctx, isl_ast_expr *, n_arg);
if (n_arg && !expr->u.op.args)
return isl_ast_expr_free(expr);
return expr;
}
/* Create a new id expression representing "id".
*/
__isl_give isl_ast_expr *isl_ast_expr_from_id(__isl_take isl_id *id)
{
isl_ctx *ctx;
isl_ast_expr *expr;
if (!id)
return NULL;
ctx = isl_id_get_ctx(id);
expr = isl_calloc_type(ctx, isl_ast_expr);
if (!expr)
goto error;
expr->ctx = ctx;
isl_ctx_ref(ctx);
expr->ref = 1;
expr->type = isl_ast_expr_id;
expr->u.id = id;
return expr;
error:
isl_id_free(id);
return NULL;
}
/* Create a new integer expression representing "i".
*/
__isl_give isl_ast_expr *isl_ast_expr_alloc_int_si(isl_ctx *ctx, int i)
{
isl_ast_expr *expr;
expr = isl_calloc_type(ctx, isl_ast_expr);
if (!expr)
return NULL;
expr->ctx = ctx;
isl_ctx_ref(ctx);
expr->ref = 1;
expr->type = isl_ast_expr_int;
expr->u.v = isl_val_int_from_si(ctx, i);
if (!expr->u.v)
return isl_ast_expr_free(expr);
return expr;
}
/* Create a new integer expression representing "v".
*/
__isl_give isl_ast_expr *isl_ast_expr_from_val(__isl_take isl_val *v)
{
isl_ctx *ctx;
isl_ast_expr *expr;
if (!v)
return NULL;
if (!isl_val_is_int(v))
isl_die(isl_val_get_ctx(v), isl_error_invalid,
"expecting integer value", goto error);
ctx = isl_val_get_ctx(v);
expr = isl_calloc_type(ctx, isl_ast_expr);
if (!expr)
goto error;
expr->ctx = ctx;
isl_ctx_ref(ctx);
expr->ref = 1;
expr->type = isl_ast_expr_int;
expr->u.v = v;
return expr;
error:
isl_val_free(v);
return NULL;
}
/* Create an expression representing the unary operation "type" applied to
* "arg".
*/
__isl_give isl_ast_expr *isl_ast_expr_alloc_unary(enum isl_ast_op_type type,
__isl_take isl_ast_expr *arg)
{
isl_ctx *ctx;
isl_ast_expr *expr = NULL;
if (!arg)
return NULL;
ctx = isl_ast_expr_get_ctx(arg);
expr = isl_ast_expr_alloc_op(ctx, type, 1);
if (!expr)
goto error;
expr->u.op.args[0] = arg;
return expr;
error:
isl_ast_expr_free(arg);
return NULL;
}
/* Create an expression representing the negation of "arg".
*/
__isl_give isl_ast_expr *isl_ast_expr_neg(__isl_take isl_ast_expr *arg)
{
return isl_ast_expr_alloc_unary(isl_ast_op_minus, arg);
}
/* Create an expression representing the address of "expr".
*/
__isl_give isl_ast_expr *isl_ast_expr_address_of(__isl_take isl_ast_expr *expr)
{
if (!expr)
return NULL;
if (isl_ast_expr_get_type(expr) != isl_ast_expr_op ||
isl_ast_expr_get_op_type(expr) != isl_ast_op_access)
isl_die(isl_ast_expr_get_ctx(expr), isl_error_invalid,
"can only take address of access expressions",
return isl_ast_expr_free(expr));
return isl_ast_expr_alloc_unary(isl_ast_op_address_of, expr);
}
/* Create an expression representing the binary operation "type"
* applied to "expr1" and "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_alloc_binary(enum isl_ast_op_type type,
__isl_take isl_ast_expr *expr1, __isl_take isl_ast_expr *expr2)
{
isl_ctx *ctx;
isl_ast_expr *expr = NULL;
if (!expr1 || !expr2)
goto error;
ctx = isl_ast_expr_get_ctx(expr1);
expr = isl_ast_expr_alloc_op(ctx, type, 2);
if (!expr)
goto error;
expr->u.op.args[0] = expr1;
expr->u.op.args[1] = expr2;
return expr;
error:
isl_ast_expr_free(expr1);
isl_ast_expr_free(expr2);
return NULL;
}
/* Create an expression representing the sum of "expr1" and "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_add(__isl_take isl_ast_expr *expr1,
__isl_take isl_ast_expr *expr2)
{
return isl_ast_expr_alloc_binary(isl_ast_op_add, expr1, expr2);
}
/* Create an expression representing the difference of "expr1" and "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_sub(__isl_take isl_ast_expr *expr1,
__isl_take isl_ast_expr *expr2)
{
return isl_ast_expr_alloc_binary(isl_ast_op_sub, expr1, expr2);
}
/* Create an expression representing the product of "expr1" and "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_mul(__isl_take isl_ast_expr *expr1,
__isl_take isl_ast_expr *expr2)
{
return isl_ast_expr_alloc_binary(isl_ast_op_mul, expr1, expr2);
}
/* Create an expression representing the quotient of "expr1" and "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_div(__isl_take isl_ast_expr *expr1,
__isl_take isl_ast_expr *expr2)
{
return isl_ast_expr_alloc_binary(isl_ast_op_div, expr1, expr2);
}
/* Create an expression representing the conjunction of "expr1" and "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_and(__isl_take isl_ast_expr *expr1,
__isl_take isl_ast_expr *expr2)
{
return isl_ast_expr_alloc_binary(isl_ast_op_and, expr1, expr2);
}
/* Create an expression representing the disjunction of "expr1" and "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_or(__isl_take isl_ast_expr *expr1,
__isl_take isl_ast_expr *expr2)
{
return isl_ast_expr_alloc_binary(isl_ast_op_or, expr1, expr2);
}
/* Create an expression representing "expr1" less than or equal to "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_le(__isl_take isl_ast_expr *expr1,
__isl_take isl_ast_expr *expr2)
{
return isl_ast_expr_alloc_binary(isl_ast_op_le, expr1, expr2);
}
/* Create an expression representing "expr1" less than "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_lt(__isl_take isl_ast_expr *expr1,
__isl_take isl_ast_expr *expr2)
{
return isl_ast_expr_alloc_binary(isl_ast_op_lt, expr1, expr2);
}
/* Create an expression representing "expr1" greater than or equal to "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_ge(__isl_take isl_ast_expr *expr1,
__isl_take isl_ast_expr *expr2)
{
return isl_ast_expr_alloc_binary(isl_ast_op_ge, expr1, expr2);
}
/* Create an expression representing "expr1" greater than "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_gt(__isl_take isl_ast_expr *expr1,
__isl_take isl_ast_expr *expr2)
{
return isl_ast_expr_alloc_binary(isl_ast_op_gt, expr1, expr2);
}
/* Create an expression representing "expr1" equal to "expr2".
*/
__isl_give isl_ast_expr *isl_ast_expr_eq(__isl_take isl_ast_expr *expr1,
__isl_take isl_ast_expr *expr2)
{
return isl_ast_expr_alloc_binary(isl_ast_op_eq, expr1, expr2);
}
/* Create an expression representing an access to "array" with index
* expressions "indices".
*/
__isl_give isl_ast_expr *isl_ast_expr_access(__isl_take isl_ast_expr *array,
__isl_take isl_ast_expr_list *indices)
{
int i, n;
isl_ctx *ctx;
isl_ast_expr *access = NULL;
if (!array || !indices)
goto error;
ctx = isl_ast_expr_get_ctx(array);
n = isl_ast_expr_list_n_ast_expr(indices);
access = isl_ast_expr_alloc_op(ctx, isl_ast_op_access, 1 + n);
if (!access)
goto error;
for (i = 0; i < n; ++i) {
isl_ast_expr *index;
index = isl_ast_expr_list_get_ast_expr(indices, i);
access->u.op.args[1 + i] = index;
if (!index)
goto error;
}
access->u.op.args[0] = array;
isl_ast_expr_list_free(indices);
return access;
error:
isl_ast_expr_free(array);
isl_ast_expr_list_free(indices);
isl_ast_expr_free(access);
return NULL;
}
/* For each subexpression of "expr" of type isl_ast_expr_id,
* if it appears in "id2expr", then replace it by the corresponding
* expression.
*/
__isl_give isl_ast_expr *isl_ast_expr_substitute_ids(
__isl_take isl_ast_expr *expr, __isl_take isl_id_to_ast_expr *id2expr)
{
int i;
isl_id *id;
if (!expr || !id2expr)
goto error;
switch (expr->type) {
case isl_ast_expr_int:
break;
case isl_ast_expr_id:
if (!isl_id_to_ast_expr_has(id2expr, expr->u.id))
break;
id = isl_id_copy(expr->u.id);
isl_ast_expr_free(expr);
expr = isl_id_to_ast_expr_get(id2expr, id);
break;
case isl_ast_expr_op:
for (i = 0; i < expr->u.op.n_arg; ++i) {
isl_ast_expr *arg;
arg = isl_ast_expr_copy(expr->u.op.args[i]);
arg = isl_ast_expr_substitute_ids(arg,
isl_id_to_ast_expr_copy(id2expr));
if (arg == expr->u.op.args[i]) {
isl_ast_expr_free(arg);
continue;
}
if (!arg)
expr = isl_ast_expr_free(expr);
expr = isl_ast_expr_cow(expr);
if (!expr) {
isl_ast_expr_free(arg);
break;
}
isl_ast_expr_free(expr->u.op.args[i]);
expr->u.op.args[i] = arg;
}
break;
case isl_ast_expr_error:
expr = isl_ast_expr_free(expr);
break;
}
isl_id_to_ast_expr_free(id2expr);
return expr;
error:
isl_ast_expr_free(expr);
isl_id_to_ast_expr_free(id2expr);
return NULL;
}
isl_ctx *isl_ast_node_get_ctx(__isl_keep isl_ast_node *node)
{
return node ? node->ctx : NULL;
}
enum isl_ast_node_type isl_ast_node_get_type(__isl_keep isl_ast_node *node)
{
return node ? node->type : isl_ast_node_error;
}
__isl_give isl_ast_node *isl_ast_node_alloc(isl_ctx *ctx,
enum isl_ast_node_type type)
{
isl_ast_node *node;
node = isl_calloc_type(ctx, isl_ast_node);
if (!node)
return NULL;
node->ctx = ctx;
isl_ctx_ref(ctx);
node->ref = 1;
node->type = type;
return node;
}
/* Create an if node with the given guard.
*
* The then body needs to be filled in later.
*/
__isl_give isl_ast_node *isl_ast_node_alloc_if(__isl_take isl_ast_expr *guard)
{
isl_ast_node *node;
if (!guard)
return NULL;
node = isl_ast_node_alloc(isl_ast_expr_get_ctx(guard), isl_ast_node_if);
if (!node)
goto error;
node->u.i.guard = guard;
return node;
error:
isl_ast_expr_free(guard);
return NULL;
}
/* Create a for node with the given iterator.
*
* The remaining fields need to be filled in later.
*/
__isl_give isl_ast_node *isl_ast_node_alloc_for(__isl_take isl_id *id)
{
isl_ast_node *node;
isl_ctx *ctx;
if (!id)
return NULL;
ctx = isl_id_get_ctx(id);
node = isl_ast_node_alloc(ctx, isl_ast_node_for);
if (!node)
goto error;
node->u.f.iterator = isl_ast_expr_from_id(id);
if (!node->u.f.iterator)
return isl_ast_node_free(node);
return node;
error:
isl_id_free(id);
return NULL;
}
/* Create a user node evaluating "expr".
*/
__isl_give isl_ast_node *isl_ast_node_alloc_user(__isl_take isl_ast_expr *expr)
{
isl_ctx *ctx;
isl_ast_node *node;
if (!expr)
return NULL;
ctx = isl_ast_expr_get_ctx(expr);
node = isl_ast_node_alloc(ctx, isl_ast_node_user);
if (!node)
goto error;
node->u.e.expr = expr;
return node;
error:
isl_ast_expr_free(expr);
return NULL;
}
/* Create a block node with the given children.
*/
__isl_give isl_ast_node *isl_ast_node_alloc_block(
__isl_take isl_ast_node_list *list)
{
isl_ast_node *node;
isl_ctx *ctx;
if (!list)
return NULL;
ctx = isl_ast_node_list_get_ctx(list);
node = isl_ast_node_alloc(ctx, isl_ast_node_block);
if (!node)
goto error;
node->u.b.children = list;
return node;
error:
isl_ast_node_list_free(list);
return NULL;
}
/* Represent the given list of nodes as a single node, either by
* extract the node from a single element list or by creating
* a block node with the list of nodes as children.
*/
__isl_give isl_ast_node *isl_ast_node_from_ast_node_list(
__isl_take isl_ast_node_list *list)
{
isl_ast_node *node;
if (isl_ast_node_list_n_ast_node(list) != 1)
return isl_ast_node_alloc_block(list);
node = isl_ast_node_list_get_ast_node(list, 0);
isl_ast_node_list_free(list);
return node;
}
__isl_give isl_ast_node *isl_ast_node_copy(__isl_keep isl_ast_node *node)
{
if (!node)
return NULL;
node->ref++;
return node;
}
__isl_give isl_ast_node *isl_ast_node_dup(__isl_keep isl_ast_node *node)
{
isl_ast_node *dup;
if (!node)
return NULL;
dup = isl_ast_node_alloc(isl_ast_node_get_ctx(node), node->type);
if (!dup)
return NULL;
switch (node->type) {
case isl_ast_node_if:
dup->u.i.guard = isl_ast_expr_copy(node->u.i.guard);
dup->u.i.then = isl_ast_node_copy(node->u.i.then);
dup->u.i.else_node = isl_ast_node_copy(node->u.i.else_node);
if (!dup->u.i.guard || !dup->u.i.then ||
(node->u.i.else_node && !dup->u.i.else_node))
return isl_ast_node_free(dup);
break;
case isl_ast_node_for:
dup->u.f.iterator = isl_ast_expr_copy(node->u.f.iterator);
dup->u.f.init = isl_ast_expr_copy(node->u.f.init);
dup->u.f.cond = isl_ast_expr_copy(node->u.f.cond);
dup->u.f.inc = isl_ast_expr_copy(node->u.f.inc);
dup->u.f.body = isl_ast_node_copy(node->u.f.body);
if (!dup->u.f.iterator || !dup->u.f.init || !dup->u.f.cond ||
!dup->u.f.inc || !dup->u.f.body)
return isl_ast_node_free(dup);
break;
case isl_ast_node_block:
dup->u.b.children = isl_ast_node_list_copy(node->u.b.children);
if (!dup->u.b.children)
return isl_ast_node_free(dup);
break;
case isl_ast_node_user:
dup->u.e.expr = isl_ast_expr_copy(node->u.e.expr);
if (!dup->u.e.expr)
return isl_ast_node_free(dup);
break;
case isl_ast_node_error:
break;
}
return dup;
}
__isl_give isl_ast_node *isl_ast_node_cow(__isl_take isl_ast_node *node)
{
if (!node)
return NULL;
if (node->ref == 1)
return node;
node->ref--;
return isl_ast_node_dup(node);
}
__isl_null isl_ast_node *isl_ast_node_free(__isl_take isl_ast_node *node)
{
if (!node)
return NULL;
if (--node->ref > 0)
return NULL;
switch (node->type) {
case isl_ast_node_if:
isl_ast_expr_free(node->u.i.guard);
isl_ast_node_free(node->u.i.then);
isl_ast_node_free(node->u.i.else_node);
break;
case isl_ast_node_for:
isl_ast_expr_free(node->u.f.iterator);
isl_ast_expr_free(node->u.f.init);
isl_ast_expr_free(node->u.f.cond);
isl_ast_expr_free(node->u.f.inc);
isl_ast_node_free(node->u.f.body);
break;
case isl_ast_node_block:
isl_ast_node_list_free(node->u.b.children);
break;
case isl_ast_node_user:
isl_ast_expr_free(node->u.e.expr);
break;
case isl_ast_node_error:
break;
}
isl_id_free(node->annotation);
isl_ctx_deref(node->ctx);
free(node);
return NULL;
}
/* Replace the body of the for node "node" by "body".
*/
__isl_give isl_ast_node *isl_ast_node_for_set_body(
__isl_take isl_ast_node *node, __isl_take isl_ast_node *body)
{
node = isl_ast_node_cow(node);
if (!node || !body)
goto error;
if (node->type != isl_ast_node_for)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not a for node", goto error);
isl_ast_node_free(node->u.f.body);
node->u.f.body = body;
return node;
error:
isl_ast_node_free(node);
isl_ast_node_free(body);
return NULL;
}
__isl_give isl_ast_node *isl_ast_node_for_get_body(
__isl_keep isl_ast_node *node)
{
if (!node)
return NULL;
if (node->type != isl_ast_node_for)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not a for node", return NULL);
return isl_ast_node_copy(node->u.f.body);
}
/* Mark the given for node as being degenerate.
*/
__isl_give isl_ast_node *isl_ast_node_for_mark_degenerate(
__isl_take isl_ast_node *node)
{
node = isl_ast_node_cow(node);
if (!node)
return NULL;
node->u.f.degenerate = 1;
return node;
}
int isl_ast_node_for_is_degenerate(__isl_keep isl_ast_node *node)
{
if (!node)
return -1;
if (node->type != isl_ast_node_for)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not a for node", return -1);
return node->u.f.degenerate;
}
__isl_give isl_ast_expr *isl_ast_node_for_get_iterator(
__isl_keep isl_ast_node *node)
{
if (!node)
return NULL;
if (node->type != isl_ast_node_for)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not a for node", return NULL);
return isl_ast_expr_copy(node->u.f.iterator);
}
__isl_give isl_ast_expr *isl_ast_node_for_get_init(
__isl_keep isl_ast_node *node)
{
if (!node)
return NULL;
if (node->type != isl_ast_node_for)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not a for node", return NULL);
return isl_ast_expr_copy(node->u.f.init);
}
/* Return the condition expression of the given for node.
*
* If the for node is degenerate, then the condition is not explicitly
* stored in the node. Instead, it is constructed as
*
* iterator <= init
*/
__isl_give isl_ast_expr *isl_ast_node_for_get_cond(
__isl_keep isl_ast_node *node)
{
if (!node)
return NULL;
if (node->type != isl_ast_node_for)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not a for node", return NULL);
if (!node->u.f.degenerate)
return isl_ast_expr_copy(node->u.f.cond);
return isl_ast_expr_alloc_binary(isl_ast_op_le,
isl_ast_expr_copy(node->u.f.iterator),
isl_ast_expr_copy(node->u.f.init));
}
/* Return the increment of the given for node.
*
* If the for node is degenerate, then the increment is not explicitly
* stored in the node. We simply return "1".
*/
__isl_give isl_ast_expr *isl_ast_node_for_get_inc(
__isl_keep isl_ast_node *node)
{
if (!node)
return NULL;
if (node->type != isl_ast_node_for)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not a for node", return NULL);
if (!node->u.f.degenerate)
return isl_ast_expr_copy(node->u.f.inc);
return isl_ast_expr_alloc_int_si(isl_ast_node_get_ctx(node), 1);
}
/* Replace the then branch of the if node "node" by "child".
*/
__isl_give isl_ast_node *isl_ast_node_if_set_then(
__isl_take isl_ast_node *node, __isl_take isl_ast_node *child)
{
node = isl_ast_node_cow(node);
if (!node || !child)
goto error;
if (node->type != isl_ast_node_if)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not an if node", goto error);
isl_ast_node_free(node->u.i.then);
node->u.i.then = child;
return node;
error:
isl_ast_node_free(node);
isl_ast_node_free(child);
return NULL;
}
__isl_give isl_ast_node *isl_ast_node_if_get_then(
__isl_keep isl_ast_node *node)
{
if (!node)
return NULL;
if (node->type != isl_ast_node_if)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not an if node", return NULL);
return isl_ast_node_copy(node->u.i.then);
}
int isl_ast_node_if_has_else(
__isl_keep isl_ast_node *node)
{
if (!node)
return -1;
if (node->type != isl_ast_node_if)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not an if node", return -1);
return node->u.i.else_node != NULL;
}
__isl_give isl_ast_node *isl_ast_node_if_get_else(
__isl_keep isl_ast_node *node)
{
if (!node)
return NULL;
if (node->type != isl_ast_node_if)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not an if node", return NULL);
return isl_ast_node_copy(node->u.i.else_node);
}
__isl_give isl_ast_expr *isl_ast_node_if_get_cond(
__isl_keep isl_ast_node *node)
{
if (!node)
return NULL;
if (node->type != isl_ast_node_if)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not a guard node", return NULL);
return isl_ast_expr_copy(node->u.i.guard);
}
__isl_give isl_ast_node_list *isl_ast_node_block_get_children(
__isl_keep isl_ast_node *node)
{
if (!node)
return NULL;
if (node->type != isl_ast_node_block)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not a block node", return NULL);
return isl_ast_node_list_copy(node->u.b.children);
}
__isl_give isl_ast_expr *isl_ast_node_user_get_expr(
__isl_keep isl_ast_node *node)
{
if (!node)
return NULL;
if (node->type != isl_ast_node_user)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not a user node", return NULL);
return isl_ast_expr_copy(node->u.e.expr);
}
__isl_give isl_id *isl_ast_node_get_annotation(__isl_keep isl_ast_node *node)
{
return node ? isl_id_copy(node->annotation) : NULL;
}
/* Replace node->annotation by "annotation".
*/
__isl_give isl_ast_node *isl_ast_node_set_annotation(
__isl_take isl_ast_node *node, __isl_take isl_id *annotation)
{
node = isl_ast_node_cow(node);
if (!node || !annotation)
goto error;
isl_id_free(node->annotation);
node->annotation = annotation;
return node;
error:
isl_id_free(annotation);
return isl_ast_node_free(node);
}
/* Textual C representation of the various operators.
*/
static char *op_str[] = {
[isl_ast_op_and] = "&&",
[isl_ast_op_and_then] = "&&",
[isl_ast_op_or] = "||",
[isl_ast_op_or_else] = "||",
[isl_ast_op_max] = "max",
[isl_ast_op_min] = "min",
[isl_ast_op_minus] = "-",
[isl_ast_op_add] = "+",
[isl_ast_op_sub] = "-",
[isl_ast_op_mul] = "*",
[isl_ast_op_pdiv_q] = "/",
[isl_ast_op_pdiv_r] = "%",
[isl_ast_op_div] = "/",
[isl_ast_op_eq] = "==",
[isl_ast_op_le] = "<=",
[isl_ast_op_ge] = ">=",
[isl_ast_op_lt] = "<",
[isl_ast_op_gt] = ">",
[isl_ast_op_member] = ".",
[isl_ast_op_address_of] = "&"
};
/* Precedence in C of the various operators.
* Based on http://en.wikipedia.org/wiki/Operators_in_C_and_C++
* Lowest value means highest precedence.
*/
static int op_prec[] = {
[isl_ast_op_and] = 13,
[isl_ast_op_and_then] = 13,
[isl_ast_op_or] = 14,
[isl_ast_op_or_else] = 14,
[isl_ast_op_max] = 2,
[isl_ast_op_min] = 2,
[isl_ast_op_minus] = 3,
[isl_ast_op_add] = 6,
[isl_ast_op_sub] = 6,
[isl_ast_op_mul] = 5,
[isl_ast_op_div] = 5,
[isl_ast_op_fdiv_q] = 2,
[isl_ast_op_pdiv_q] = 5,
[isl_ast_op_pdiv_r] = 5,
[isl_ast_op_cond] = 15,
[isl_ast_op_select] = 15,
[isl_ast_op_eq] = 9,
[isl_ast_op_le] = 8,
[isl_ast_op_ge] = 8,
[isl_ast_op_lt] = 8,
[isl_ast_op_gt] = 8,
[isl_ast_op_call] = 2,
[isl_ast_op_access] = 2,
[isl_ast_op_member] = 2,
[isl_ast_op_address_of] = 3
};
/* Is the operator left-to-right associative?
*/
static int op_left[] = {
[isl_ast_op_and] = 1,
[isl_ast_op_and_then] = 1,
[isl_ast_op_or] = 1,
[isl_ast_op_or_else] = 1,
[isl_ast_op_max] = 1,
[isl_ast_op_min] = 1,
[isl_ast_op_minus] = 0,
[isl_ast_op_add] = 1,
[isl_ast_op_sub] = 1,
[isl_ast_op_mul] = 1,
[isl_ast_op_div] = 1,
[isl_ast_op_fdiv_q] = 1,
[isl_ast_op_pdiv_q] = 1,
[isl_ast_op_pdiv_r] = 1,
[isl_ast_op_cond] = 0,
[isl_ast_op_select] = 0,
[isl_ast_op_eq] = 1,
[isl_ast_op_le] = 1,
[isl_ast_op_ge] = 1,
[isl_ast_op_lt] = 1,
[isl_ast_op_gt] = 1,
[isl_ast_op_call] = 1,
[isl_ast_op_access] = 1,
[isl_ast_op_member] = 1,
[isl_ast_op_address_of] = 0
};
static int is_and(enum isl_ast_op_type op)
{
return op == isl_ast_op_and || op == isl_ast_op_and_then;
}
static int is_or(enum isl_ast_op_type op)
{
return op == isl_ast_op_or || op == isl_ast_op_or_else;
}
static int is_add_sub(enum isl_ast_op_type op)
{
return op == isl_ast_op_add || op == isl_ast_op_sub;
}
static int is_div_mod(enum isl_ast_op_type op)
{
return op == isl_ast_op_div || op == isl_ast_op_pdiv_r;
}
/* Do we need/want parentheses around "expr" as a subexpression of
* an "op" operation? If "left" is set, then "expr" is the left-most
* operand.
*
* We only need parentheses if "expr" represents an operation.
*
* If op has a higher precedence than expr->u.op.op, then we need
* parentheses.
* If op and expr->u.op.op have the same precedence, but the operations
* are performed in an order that is different from the associativity,
* then we need parentheses.
*
* An and inside an or technically does not require parentheses,
* but some compilers complain about that, so we add them anyway.
*
* Computations such as "a / b * c" and "a % b + c" can be somewhat
* difficult to read, so we add parentheses for those as well.
*/
static int sub_expr_need_parens(enum isl_ast_op_type op,
__isl_keep isl_ast_expr *expr, int left)
{
if (expr->type != isl_ast_expr_op)
return 0;
if (op_prec[expr->u.op.op] > op_prec[op])
return 1;
if (op_prec[expr->u.op.op] == op_prec[op] && left != op_left[op])
return 1;
if (is_or(op) && is_and(expr->u.op.op))
return 1;
if (op == isl_ast_op_mul && expr->u.op.op != isl_ast_op_mul &&
op_prec[expr->u.op.op] == op_prec[op])
return 1;
if (is_add_sub(op) && is_div_mod(expr->u.op.op))
return 1;
return 0;
}
/* Print "expr" as a subexpression of an "op" operation.
* If "left" is set, then "expr" is the left-most operand.
*/
static __isl_give isl_printer *print_sub_expr(__isl_take isl_printer *p,
enum isl_ast_op_type op, __isl_keep isl_ast_expr *expr, int left)
{
int need_parens;
need_parens = sub_expr_need_parens(op, expr, left);
if (need_parens)
p = isl_printer_print_str(p, "(");
p = isl_printer_print_ast_expr(p, expr);
if (need_parens)
p = isl_printer_print_str(p, ")");
return p;
}
/* Print a min or max reduction "expr".
*/
static __isl_give isl_printer *print_min_max(__isl_take isl_printer *p,
__isl_keep isl_ast_expr *expr)
{
int i = 0;
for (i = 1; i < expr->u.op.n_arg; ++i) {
p = isl_printer_print_str(p, op_str[expr->u.op.op]);
p = isl_printer_print_str(p, "(");
}
p = isl_printer_print_ast_expr(p, expr->u.op.args[0]);
for (i = 1; i < expr->u.op.n_arg; ++i) {
p = isl_printer_print_str(p, ", ");
p = isl_printer_print_ast_expr(p, expr->u.op.args[i]);
p = isl_printer_print_str(p, ")");
}
return p;
}
/* Print a function call "expr".
*
* The first argument represents the function to be called.
*/
static __isl_give isl_printer *print_call(__isl_take isl_printer *p,
__isl_keep isl_ast_expr *expr)
{
int i = 0;
p = isl_printer_print_ast_expr(p, expr->u.op.args[0]);
p = isl_printer_print_str(p, "(");
for (i = 1; i < expr->u.op.n_arg; ++i) {
if (i != 1)
p = isl_printer_print_str(p, ", ");
p = isl_printer_print_ast_expr(p, expr->u.op.args[i]);
}
p = isl_printer_print_str(p, ")");
return p;
}
/* Print an array access "expr".
*
* The first argument represents the array being accessed.
*/
static __isl_give isl_printer *print_access(__isl_take isl_printer *p,
__isl_keep isl_ast_expr *expr)
{
int i = 0;
p = isl_printer_print_ast_expr(p, expr->u.op.args[0]);
for (i = 1; i < expr->u.op.n_arg; ++i) {
p = isl_printer_print_str(p, "[");
p = isl_printer_print_ast_expr(p, expr->u.op.args[i]);
p = isl_printer_print_str(p, "]");
}
return p;
}
/* Print "expr" to "p".
*
* If we are printing in isl format, then we also print an indication
* of the size of the expression (if it was computed).
*/
__isl_give isl_printer *isl_printer_print_ast_expr(__isl_take isl_printer *p,
__isl_keep isl_ast_expr *expr)
{
if (!p)
return NULL;
if (!expr)
return isl_printer_free(p);
switch (expr->type) {
case isl_ast_expr_op:
if (expr->u.op.op == isl_ast_op_call) {
p = print_call(p, expr);
break;
}
if (expr->u.op.op == isl_ast_op_access) {
p = print_access(p, expr);
break;
}
if (expr->u.op.n_arg == 1) {
p = isl_printer_print_str(p, op_str[expr->u.op.op]);
p = print_sub_expr(p, expr->u.op.op,
expr->u.op.args[0], 0);
break;
}
if (expr->u.op.op == isl_ast_op_fdiv_q) {
p = isl_printer_print_str(p, "floord(");
p = isl_printer_print_ast_expr(p, expr->u.op.args[0]);
p = isl_printer_print_str(p, ", ");
p = isl_printer_print_ast_expr(p, expr->u.op.args[1]);
p = isl_printer_print_str(p, ")");
break;
}
if (expr->u.op.op == isl_ast_op_max ||
expr->u.op.op == isl_ast_op_min) {
p = print_min_max(p, expr);
break;
}
if (expr->u.op.op == isl_ast_op_cond ||
expr->u.op.op == isl_ast_op_select) {
p = isl_printer_print_ast_expr(p, expr->u.op.args[0]);
p = isl_printer_print_str(p, " ? ");
p = isl_printer_print_ast_expr(p, expr->u.op.args[1]);
p = isl_printer_print_str(p, " : ");
p = isl_printer_print_ast_expr(p, expr->u.op.args[2]);
break;
}
if (expr->u.op.n_arg != 2)
isl_die(isl_printer_get_ctx(p), isl_error_internal,
"operation should have two arguments",
goto error);
p = print_sub_expr(p, expr->u.op.op, expr->u.op.args[0], 1);
if (expr->u.op.op != isl_ast_op_member)
p = isl_printer_print_str(p, " ");
p = isl_printer_print_str(p, op_str[expr->u.op.op]);
if (expr->u.op.op != isl_ast_op_member)
p = isl_printer_print_str(p, " ");
p = print_sub_expr(p, expr->u.op.op, expr->u.op.args[1], 0);
break;
case isl_ast_expr_id:
p = isl_printer_print_str(p, isl_id_get_name(expr->u.id));
break;
case isl_ast_expr_int:
p = isl_printer_print_val(p, expr->u.v);
break;
case isl_ast_expr_error:
break;
}
return p;
error:
isl_printer_free(p);
return NULL;
}
/* Print "node" to "p" in "isl format".
*/
static __isl_give isl_printer *print_ast_node_isl(__isl_take isl_printer *p,
__isl_keep isl_ast_node *node)
{
p = isl_printer_print_str(p, "(");
switch (node->type) {
case isl_ast_node_for:
if (node->u.f.degenerate) {
p = isl_printer_print_ast_expr(p, node->u.f.init);
} else {
p = isl_printer_print_str(p, "init: ");
p = isl_printer_print_ast_expr(p, node->u.f.init);
p = isl_printer_print_str(p, ", ");
p = isl_printer_print_str(p, "cond: ");
p = isl_printer_print_ast_expr(p, node->u.f.cond);
p = isl_printer_print_str(p, ", ");
p = isl_printer_print_str(p, "inc: ");
p = isl_printer_print_ast_expr(p, node->u.f.inc);
}
if (node->u.f.body) {
p = isl_printer_print_str(p, ", ");
p = isl_printer_print_str(p, "body: ");
p = isl_printer_print_ast_node(p, node->u.f.body);
}
break;
case isl_ast_node_user:
p = isl_printer_print_ast_expr(p, node->u.e.expr);
break;
case isl_ast_node_if:
p = isl_printer_print_str(p, "guard: ");
p = isl_printer_print_ast_expr(p, node->u.i.guard);
if (node->u.i.then) {
p = isl_printer_print_str(p, ", ");
p = isl_printer_print_str(p, "then: ");
p = isl_printer_print_ast_node(p, node->u.i.then);
}
if (node->u.i.else_node) {
p = isl_printer_print_str(p, ", ");
p = isl_printer_print_str(p, "else: ");
p = isl_printer_print_ast_node(p, node->u.i.else_node);
}
break;
case isl_ast_node_block:
p = isl_printer_print_ast_node_list(p, node->u.b.children);
break;
default:
break;
}
p = isl_printer_print_str(p, ")");
return p;
}
/* Do we need to print a block around the body "node" of a for or if node?
*
* If the node is a block, then we need to print a block.
* Also if the node is a degenerate for then we will print it as
* an assignment followed by the body of the for loop, so we need a block
* as well.
* If the node is an if node with an else, then we print a block
* to avoid spurious dangling else warnings emitted by some compilers.
* If the ast_always_print_block option has been set, then we print a block.
*/
static int need_block(__isl_keep isl_ast_node *node)
{
isl_ctx *ctx;
if (node->type == isl_ast_node_block)
return 1;
if (node->type == isl_ast_node_for && node->u.f.degenerate)
return 1;
if (node->type == isl_ast_node_if && node->u.i.else_node)
return 1;
ctx = isl_ast_node_get_ctx(node);
return isl_options_get_ast_always_print_block(ctx);
}
static __isl_give isl_printer *print_ast_node_c(__isl_take isl_printer *p,
__isl_keep isl_ast_node *node,
__isl_keep isl_ast_print_options *options, int in_block, int in_list);
static __isl_give isl_printer *print_if_c(__isl_take isl_printer *p,
__isl_keep isl_ast_node *node,
__isl_keep isl_ast_print_options *options, int new_line);
/* Print the body "node" of a for or if node.
* If "else_node" is set, then it is printed as well.
*
* We first check if we need to print out a block.
* We always print out a block if there is an else node to make
* sure that the else node is matched to the correct if node.
*
* If the else node is itself an if, then we print it as
*
* } else if (..)
*
* Otherwise the else node is printed as
*
* } else
* node
*/
static __isl_give isl_printer *print_body_c(__isl_take isl_printer *p,
__isl_keep isl_ast_node *node, __isl_keep isl_ast_node *else_node,
__isl_keep isl_ast_print_options *options)
{
if (!node)
return isl_printer_free(p);
if (!else_node && !need_block(node)) {
p = isl_printer_end_line(p);
p = isl_printer_indent(p, 2);
p = isl_ast_node_print(node, p,
isl_ast_print_options_copy(options));
p = isl_printer_indent(p, -2);
return p;
}
p = isl_printer_print_str(p, " {");
p = isl_printer_end_line(p);
p = isl_printer_indent(p, 2);
p = print_ast_node_c(p, node, options, 1, 0);
p = isl_printer_indent(p, -2);
p = isl_printer_start_line(p);
p = isl_printer_print_str(p, "}");
if (else_node) {
if (else_node->type == isl_ast_node_if) {
p = isl_printer_print_str(p, " else ");
p = print_if_c(p, else_node, options, 0);
} else {
p = isl_printer_print_str(p, " else");
p = print_body_c(p, else_node, NULL, options);
}
} else
p = isl_printer_end_line(p);
return p;
}
/* Print the start of a compound statement.
*/
static __isl_give isl_printer *start_block(__isl_take isl_printer *p)
{
p = isl_printer_start_line(p);
p = isl_printer_print_str(p, "{");
p = isl_printer_end_line(p);
p = isl_printer_indent(p, 2);
return p;
}
/* Print the end of a compound statement.
*/
static __isl_give isl_printer *end_block(__isl_take isl_printer *p)
{
p = isl_printer_indent(p, -2);
p = isl_printer_start_line(p);
p = isl_printer_print_str(p, "}");
p = isl_printer_end_line(p);
return p;
}
/* Print the for node "node".
*
* If the for node is degenerate, it is printed as
*
* type iterator = init;
* body
*
* Otherwise, it is printed as
*
* for (type iterator = init; cond; iterator += inc)
* body
*
* "in_block" is set if we are currently inside a block.
* "in_list" is set if the current node is not alone in the block.
* If we are not in a block or if the current not is not alone in the block
* then we print a block around a degenerate for loop such that the variable
* declaration will not conflict with any potential other declaration
* of the same variable.
*/
static __isl_give isl_printer *print_for_c(__isl_take isl_printer *p,
__isl_keep isl_ast_node *node,
__isl_keep isl_ast_print_options *options, int in_block, int in_list)
{
isl_id *id;
const char *name;
const char *type;
type = isl_options_get_ast_iterator_type(isl_printer_get_ctx(p));
if (!node->u.f.degenerate) {
id = isl_ast_expr_get_id(node->u.f.iterator);
name = isl_id_get_name(id);
isl_id_free(id);
p = isl_printer_start_line(p);
p = isl_printer_print_str(p, "for (");
p = isl_printer_print_str(p, type);
p = isl_printer_print_str(p, " ");
p = isl_printer_print_str(p, name);
p = isl_printer_print_str(p, " = ");
p = isl_printer_print_ast_expr(p, node->u.f.init);
p = isl_printer_print_str(p, "; ");
p = isl_printer_print_ast_expr(p, node->u.f.cond);
p = isl_printer_print_str(p, "; ");
p = isl_printer_print_str(p, name);
p = isl_printer_print_str(p, " += ");
p = isl_printer_print_ast_expr(p, node->u.f.inc);
p = isl_printer_print_str(p, ")");
p = print_body_c(p, node->u.f.body, NULL, options);
} else {
id = isl_ast_expr_get_id(node->u.f.iterator);
name = isl_id_get_name(id);
isl_id_free(id);
if (!in_block || in_list)
p = start_block(p);
p = isl_printer_start_line(p);
p = isl_printer_print_str(p, type);
p = isl_printer_print_str(p, " ");
p = isl_printer_print_str(p, name);
p = isl_printer_print_str(p, " = ");
p = isl_printer_print_ast_expr(p, node->u.f.init);
p = isl_printer_print_str(p, ";");
p = isl_printer_end_line(p);
p = print_ast_node_c(p, node->u.f.body, options, 1, 0);
if (!in_block || in_list)
p = end_block(p);
}
return p;
}
/* Print the if node "node".
* If "new_line" is set then the if node should be printed on a new line.
*/
static __isl_give isl_printer *print_if_c(__isl_take isl_printer *p,
__isl_keep isl_ast_node *node,
__isl_keep isl_ast_print_options *options, int new_line)
{
if (new_line)
p = isl_printer_start_line(p);
p = isl_printer_print_str(p, "if (");
p = isl_printer_print_ast_expr(p, node->u.i.guard);
p = isl_printer_print_str(p, ")");
p = print_body_c(p, node->u.i.then, node->u.i.else_node, options);
return p;
}
/* Print the "node" to "p".
*
* "in_block" is set if we are currently inside a block.
* If so, we do not print a block around the children of a block node.
* We do this to avoid an extra block around the body of a degenerate
* for node.
*
* "in_list" is set if the current node is not alone in the block.
*/
static __isl_give isl_printer *print_ast_node_c(__isl_take isl_printer *p,
__isl_keep isl_ast_node *node,
__isl_keep isl_ast_print_options *options, int in_block, int in_list)
{
switch (node->type) {
case isl_ast_node_for:
if (options->print_for)
return options->print_for(p,
isl_ast_print_options_copy(options),
node, options->print_for_user);
p = print_for_c(p, node, options, in_block, in_list);
break;
case isl_ast_node_if:
p = print_if_c(p, node, options, 1);
break;
case isl_ast_node_block:
if (!in_block)
p = start_block(p);
p = isl_ast_node_list_print(node->u.b.children, p, options);
if (!in_block)
p = end_block(p);
break;
case isl_ast_node_user:
if (options->print_user)
return options->print_user(p,
isl_ast_print_options_copy(options),
node, options->print_user_user);
p = isl_printer_start_line(p);
p = isl_printer_print_ast_expr(p, node->u.e.expr);
p = isl_printer_print_str(p, ";");
p = isl_printer_end_line(p);
break;
case isl_ast_node_error:
break;
}
return p;
}
/* Print the for node "node" to "p".
*/
__isl_give isl_printer *isl_ast_node_for_print(__isl_keep isl_ast_node *node,
__isl_take isl_printer *p, __isl_take isl_ast_print_options *options)
{
if (!node || !options)
goto error;
if (node->type != isl_ast_node_for)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not a for node", goto error);
p = print_for_c(p, node, options, 0, 0);
isl_ast_print_options_free(options);
return p;
error:
isl_ast_print_options_free(options);
isl_printer_free(p);
return NULL;
}
/* Print the if node "node" to "p".
*/
__isl_give isl_printer *isl_ast_node_if_print(__isl_keep isl_ast_node *node,
__isl_take isl_printer *p, __isl_take isl_ast_print_options *options)
{
if (!node || !options)
goto error;
if (node->type != isl_ast_node_if)
isl_die(isl_ast_node_get_ctx(node), isl_error_invalid,
"not an if node", goto error);
p = print_if_c(p, node, options, 1);
isl_ast_print_options_free(options);
return p;
error:
isl_ast_print_options_free(options);
isl_printer_free(p);
return NULL;
}
/* Print "node" to "p".
*/
__isl_give isl_printer *isl_ast_node_print(__isl_keep isl_ast_node *node,
__isl_take isl_printer *p, __isl_take isl_ast_print_options *options)
{
if (!options || !node)
goto error;
p = print_ast_node_c(p, node, options, 0, 0);
isl_ast_print_options_free(options);
return p;
error:
isl_ast_print_options_free(options);
isl_printer_free(p);
return NULL;
}
/* Print "node" to "p".
*/
__isl_give isl_printer *isl_printer_print_ast_node(__isl_take isl_printer *p,
__isl_keep isl_ast_node *node)
{
int format;
isl_ast_print_options *options;
if (!p)
return NULL;
format = isl_printer_get_output_format(p);
switch (format) {
case ISL_FORMAT_ISL:
p = print_ast_node_isl(p, node);
break;
case ISL_FORMAT_C:
options = isl_ast_print_options_alloc(isl_printer_get_ctx(p));
p = isl_ast_node_print(node, p, options);
break;
default:
isl_die(isl_printer_get_ctx(p), isl_error_unsupported,
"output format not supported for ast_node",
return isl_printer_free(p));
}
return p;
}
/* Print the list of nodes "list" to "p".
*/
__isl_give isl_printer *isl_ast_node_list_print(
__isl_keep isl_ast_node_list *list, __isl_take isl_printer *p,
__isl_keep isl_ast_print_options *options)
{
int i;
if (!p || !list || !options)
return isl_printer_free(p);
for (i = 0; i < list->n; ++i)
p = print_ast_node_c(p, list->p[i], options, 1, 1);
return p;
}
#define ISL_AST_MACRO_FLOORD (1 << 0)
#define ISL_AST_MACRO_MIN (1 << 1)
#define ISL_AST_MACRO_MAX (1 << 2)
#define ISL_AST_MACRO_ALL (ISL_AST_MACRO_FLOORD | \
ISL_AST_MACRO_MIN | \
ISL_AST_MACRO_MAX)
/* If "expr" contains an isl_ast_op_min, isl_ast_op_max or isl_ast_op_fdiv_q
* then set the corresponding bit in "macros".
*/
static int ast_expr_required_macros(__isl_keep isl_ast_expr *expr, int macros)
{
int i;
if (macros == ISL_AST_MACRO_ALL)
return macros;
if (expr->type != isl_ast_expr_op)
return macros;
if (expr->u.op.op == isl_ast_op_min)
macros |= ISL_AST_MACRO_MIN;
if (expr->u.op.op == isl_ast_op_max)
macros |= ISL_AST_MACRO_MAX;
if (expr->u.op.op == isl_ast_op_fdiv_q)
macros |= ISL_AST_MACRO_FLOORD;
for (i = 0; i < expr->u.op.n_arg; ++i)
macros = ast_expr_required_macros(expr->u.op.args[i], macros);
return macros;
}
static int ast_node_list_required_macros(__isl_keep isl_ast_node_list *list,
int macros);
/* If "node" contains an isl_ast_op_min, isl_ast_op_max or isl_ast_op_fdiv_q
* then set the corresponding bit in "macros".
*/
static int ast_node_required_macros(__isl_keep isl_ast_node *node, int macros)
{
if (macros == ISL_AST_MACRO_ALL)
return macros;
switch (node->type) {
case isl_ast_node_for:
macros = ast_expr_required_macros(node->u.f.init, macros);
if (!node->u.f.degenerate) {
macros = ast_expr_required_macros(node->u.f.cond,
macros);
macros = ast_expr_required_macros(node->u.f.inc,
macros);
}
macros = ast_node_required_macros(node->u.f.body, macros);
break;
case isl_ast_node_if:
macros = ast_expr_required_macros(node->u.i.guard, macros);
macros = ast_node_required_macros(node->u.i.then, macros);
if (node->u.i.else_node)
macros = ast_node_required_macros(node->u.i.else_node,
macros);
break;
case isl_ast_node_block:
macros = ast_node_list_required_macros(node->u.b.children,
macros);
break;
case isl_ast_node_user:
macros = ast_expr_required_macros(node->u.e.expr, macros);
break;
case isl_ast_node_error:
break;
}
return macros;
}
/* If "list" contains an isl_ast_op_min, isl_ast_op_max or isl_ast_op_fdiv_q
* then set the corresponding bit in "macros".
*/
static int ast_node_list_required_macros(__isl_keep isl_ast_node_list *list,
int macros)
{
int i;
for (i = 0; i < list->n; ++i)
macros = ast_node_required_macros(list->p[i], macros);
return macros;
}
/* Print a macro definition for the operator "type".
*/
__isl_give isl_printer *isl_ast_op_type_print_macro(
enum isl_ast_op_type type, __isl_take isl_printer *p)
{
switch (type) {
case isl_ast_op_min:
p = isl_printer_start_line(p);
p = isl_printer_print_str(p,
"#define min(x,y) ((x) < (y) ? (x) : (y))");
p = isl_printer_end_line(p);
break;
case isl_ast_op_max:
p = isl_printer_start_line(p);
p = isl_printer_print_str(p,
"#define max(x,y) ((x) > (y) ? (x) : (y))");
p = isl_printer_end_line(p);
break;
case isl_ast_op_fdiv_q:
p = isl_printer_start_line(p);
p = isl_printer_print_str(p,
"#define floord(n,d) "
"(((n)<0) ? -((-(n)+(d)-1)/(d)) : (n)/(d))");
p = isl_printer_end_line(p);
break;
default:
break;
}
return p;
}
/* Call "fn" for each type of operation that appears in "node"
* and that requires a macro definition.
*/
int isl_ast_node_foreach_ast_op_type(__isl_keep isl_ast_node *node,
int (*fn)(enum isl_ast_op_type type, void *user), void *user)
{
int macros;
if (!node)
return -1;
macros = ast_node_required_macros(node, 0);
if (macros & ISL_AST_MACRO_MIN && fn(isl_ast_op_min, user) < 0)
return -1;
if (macros & ISL_AST_MACRO_MAX && fn(isl_ast_op_max, user) < 0)
return -1;
if (macros & ISL_AST_MACRO_FLOORD && fn(isl_ast_op_fdiv_q, user) < 0)
return -1;
return 0;
}
static int ast_op_type_print_macro(enum isl_ast_op_type type, void *user)
{
isl_printer **p = user;
*p = isl_ast_op_type_print_macro(type, *p);
return 0;
}
/* Print macro definitions for all the macros used in the result
* of printing "node.
*/
__isl_give isl_printer *isl_ast_node_print_macros(
__isl_keep isl_ast_node *node, __isl_take isl_printer *p)
{
if (isl_ast_node_foreach_ast_op_type(node,
&ast_op_type_print_macro, &p) < 0)
return isl_printer_free(p);
return p;
}