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/*
* Copyright © 2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
#include "brw_shader.h"
class bblock_t;
class bblock_link : public exec_node {
public:
bblock_link(bblock_t *block)
: block(block)
{
}
bblock_t *block;
};
class bblock_t {
public:
DECLARE_RALLOC_CXX_OPERATORS(bblock_t)
bblock_t();
void add_successor(void *mem_ctx, bblock_t *successor);
void dump(backend_visitor *v);
backend_instruction *start;
backend_instruction *end;
int start_ip;
int end_ip;
exec_list parents;
exec_list children;
int block_num;
/* If the current basic block ends in an IF, ELSE, or ENDIF instruction,
* these pointers will hold the locations of the other associated control
* flow instructions.
*
* Otherwise they are NULL.
*/
backend_instruction *if_inst;
backend_instruction *else_inst;
backend_instruction *endif_inst;
};
class cfg_t {
public:
DECLARE_RALLOC_CXX_OPERATORS(cfg_t)
cfg_t(exec_list *instructions);
~cfg_t();
bblock_t *new_block();
void set_next_block(bblock_t **cur, bblock_t *block, int ip);
void make_block_array();
void dump(backend_visitor *v);
void *mem_ctx;
/** Ordered list (by ip) of basic blocks */
exec_list block_list;
bblock_t **blocks;
int num_blocks;
};
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