src/gallium/drivers/r300/compiler/radeon_variable.h

   1 /*
   2  * Copyright 2011 Tom Stellard <tstellar@gmail.com>
   3  *
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sublicense, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial
  16  * portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  */
  27
  28 #ifndef RADEON_VARIABLE_H
  29 #define RADEON_VARIABLE_H
  30
  31 #include "radeon_compiler.h"
  32
  33 struct radeon_compiler;
  34 struct rc_list;
  35 struct rc_reader_data;
  36 struct rc_readers;
  37
  38 struct live_intervals {
  39         int Start;
  40         int End;
  41         int Used;
  42 };
  43
  44 struct rc_variable {
  45         struct radeon_compiler * C;
  46         struct rc_dst_register Dst;
  47
  48         struct rc_instruction * Inst;
  49         unsigned int ReaderCount;
  50         struct rc_reader * Readers;
  51         struct live_intervals Live[4];
  52
  53         /* A friend is a variable that shares a reader with another variable.
  54          */
  55         struct rc_variable * Friend;
  56 };
  57
  58 void rc_variable_change_dst(
  59         struct rc_variable * var,
  60         unsigned int new_index,
  61         unsigned int new_writemask);
  62
  63 void rc_variable_compute_live_intervals(struct rc_variable * var);
  64
  65 void rc_variable_add_friend(
  66         struct rc_variable * var,
  67         struct rc_variable * friend);
  68
  69 struct rc_variable * rc_variable(
  70         struct radeon_compiler * c,
  71         unsigned int DstFile,
  72         unsigned int DstIndex,
  73         unsigned int DstWriteMask,
  74         struct rc_reader_data * reader_data);
  75
  76 struct rc_list * rc_get_variables(struct radeon_compiler * c);
  77
  78 unsigned int rc_variable_writemask_sum(struct rc_variable * var);
  79
  80 struct rc_list * rc_variable_readers_union(struct rc_variable * var);
  81
  82 struct rc_list * rc_variable_list_get_writers(
  83         struct rc_list * var_list,
  84         unsigned int src_type,
  85         void * src);
  86
  87 struct rc_list * rc_variable_list_get_writers_one_reader(
  88         struct rc_list * var_list,
  89         unsigned int src_type,
  90         void * src);
  91
  92 void rc_variable_print(struct rc_variable * var);
  93
  94 #endif /* RADEON_VARIABLE_H */