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/*
* Copyright 2011 Tom Stellard <tstellar@gmail.com>
*
* All Rights Reserved.
*
* 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 COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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.
*
*/
#ifndef RADEON_VARIABLE_H
#define RADEON_VARIABLE_H
#include "radeon_compiler.h"
struct radeon_compiler;
struct rc_list;
struct rc_reader_data;
struct rc_readers;
struct live_intervals {
int Start;
int End;
int Used;
};
struct rc_variable {
struct radeon_compiler * C;
struct rc_dst_register Dst;
struct rc_instruction * Inst;
unsigned int ReaderCount;
struct rc_reader * Readers;
struct live_intervals Live[4];
/* A friend is a variable that shares a reader with another variable.
*/
struct rc_variable * Friend;
};
void rc_variable_change_dst(
struct rc_variable * var,
unsigned int new_index,
unsigned int new_writemask);
void rc_variable_compute_live_intervals(struct rc_variable * var);
void rc_variable_add_friend(
struct rc_variable * var,
struct rc_variable * friend);
struct rc_variable * rc_variable(
struct radeon_compiler * c,
unsigned int DstFile,
unsigned int DstIndex,
unsigned int DstWriteMask,
struct rc_reader_data * reader_data);
struct rc_list * rc_get_variables(struct radeon_compiler * c);
unsigned int rc_variable_writemask_sum(struct rc_variable * var);
struct rc_list * rc_variable_readers_union(struct rc_variable * var);
void rc_variable_print(struct rc_variable * var);
#endif /* RADEON_VARIABLE_H */
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