/*
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* Copyright 2011 Tom Stellard <tstellar@gmail.com>
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*
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#ifndef RADEON_VARIABLE_H
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#define RADEON_VARIABLE_H
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#include "radeon_compiler.h"
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struct radeon_compiler;
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struct rc_list;
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struct rc_reader_data;
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struct rc_readers;
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struct live_intervals {
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int Start;
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int End;
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int Used;
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};
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struct rc_variable {
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struct radeon_compiler * C;
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struct rc_dst_register Dst;
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struct rc_instruction * Inst;
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unsigned int ReaderCount;
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struct rc_reader * Readers;
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struct live_intervals Live[4];
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/* A friend is a variable that shares a reader with another variable.
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*/
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struct rc_variable * Friend;
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};
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void rc_variable_change_dst(
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struct rc_variable * var,
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unsigned int new_index,
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unsigned int new_writemask);
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void rc_variable_compute_live_intervals(struct rc_variable * var);
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void rc_variable_add_friend(
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struct rc_variable * var,
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struct rc_variable * friend);
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struct rc_variable * rc_variable(
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struct radeon_compiler * c,
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unsigned int DstFile,
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unsigned int DstIndex,
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unsigned int DstWriteMask,
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struct rc_reader_data * reader_data);
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struct rc_list * rc_get_variables(struct radeon_compiler * c);
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unsigned int rc_variable_writemask_sum(struct rc_variable * var);
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struct rc_list * rc_variable_readers_union(struct rc_variable * var);
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struct rc_list * rc_variable_list_get_writers(
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struct rc_list * var_list,
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unsigned int src_type,
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void * src);
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struct rc_list * rc_variable_list_get_writers_one_reader(
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struct rc_list * var_list,
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unsigned int src_type,
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void * src);
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void rc_variable_print(struct rc_variable * var);
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#endif /* RADEON_VARIABLE_H */
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