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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>
*
*/
#pragma once
#ifndef BRW_CFG_H
#define BRW_CFG_H
#include "brw_shader.h"
struct bblock_t;
struct bblock_link {
#ifdef __cplusplus
DECLARE_RALLOC_CXX_OPERATORS(bblock_link)
bblock_link(bblock_t *block)
: block(block)
{
}
#endif
struct exec_node link;
struct bblock_t *block;
};
#ifndef __cplusplus
struct backend_instruction;
#endif
struct bblock_t {
#ifdef __cplusplus
DECLARE_RALLOC_CXX_OPERATORS(bblock_t)
explicit bblock_t(cfg_t *cfg);
void add_successor(void *mem_ctx, bblock_t *successor);
bool is_predecessor_of(const bblock_t *block) const;
bool is_successor_of(const bblock_t *block) const;
bool can_combine_with(const bblock_t *that) const;
void combine_with(bblock_t *that);
void dump(backend_visitor *v);
#endif
struct exec_node link;
struct cfg_t *cfg;
struct backend_instruction *start;
struct backend_instruction *end;
int start_ip;
int end_ip;
struct exec_list parents;
struct exec_list children;
int num;
/* If the current basic block ends in an IF or ELSE instruction, these will
* point to the basic blocks containing the other associated instruction.
*
* Otherwise they are NULL.
*/
struct bblock_t *if_block;
struct bblock_t *else_block;
};
struct cfg_t {
#ifdef __cplusplus
DECLARE_RALLOC_CXX_OPERATORS(cfg_t)
cfg_t(exec_list *instructions);
~cfg_t();
void remove_block(bblock_t *block);
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);
#endif
void *mem_ctx;
/** Ordered list (by ip) of basic blocks */
struct exec_list block_list;
struct bblock_t **blocks;
int num_blocks;
};
#define foreach_block_and_inst(__block, __type, __inst, __cfg) \
foreach_block (__block, __cfg) \
foreach_inst_in_block (__type, __inst, __block)
#define foreach_block_and_inst_safe(__block, __type, __inst, __cfg) \
foreach_block_safe (__block, __cfg) \
foreach_inst_in_block_safe (__type, __inst, __block)
#define foreach_block(__block, __cfg) \
foreach_list_typed (bblock_t, __block, link, &(__cfg)->block_list)
#define foreach_block_safe(__block, __cfg) \
foreach_list_typed_safe (bblock_t, __block, link, &(__cfg)->block_list)
#define foreach_inst_in_block(__type, __inst, __block) \
for (__type *__inst = (__type *)__block->start; \
__inst != __block->end->next; \
__inst = (__type *)__inst->next)
#define foreach_inst_in_block_safe(__type, __inst, __block) \
for (__type *__inst = (__type *)__block->start, \
*__next = (__type *)__inst->next, \
*__end = (__type *)__block->end->next->next; \
__next != __end; \
__inst = __next, \
__next = (__type *)__next->next)
#define foreach_inst_in_block_reverse(__type, __inst, __block) \
for (__type *__inst = (__type *)__block->end; \
__inst != __block->start->prev; \
__inst = (__type *)__inst->prev)
#endif /* BRW_CFG_H */
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