src/mesa/drivers/dri/r300/compiler/radeon_dataflow.h

   1 /*
   2  * Copyright (C) 2009 Nicolai Haehnle.
   3  * Copyright 2010 Tom Stellard <tstellar@gmail.com>
   4  *
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining
   8  * a copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sublicense, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial
  17  * portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  20  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  22  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  23  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  24  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  25  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  */
  28
  29 #ifndef RADEON_DATAFLOW_H
  30 #define RADEON_DATAFLOW_H
  31
  32 #include "radeon_program_constants.h"
  33
  34 struct radeon_compiler;
  35 struct rc_instruction;
  36 struct rc_swizzle_caps;
  37 struct rc_src_register;
  38 struct rc_pair_instruction_arg;
  39 struct rc_pair_instruction_source;
  40 struct rc_compiler;
  41
  42
  43 /**
  44  * Help analyze and modify the register accesses of instructions.
  45  */
  46 /*@{*/
  47 typedef void (*rc_read_write_chan_fn)(void * userdata, struct rc_instruction * inst,
  48                         rc_register_file file, unsigned int index, unsigned int chan);
  49 void rc_for_all_reads_chan(struct rc_instruction * inst, rc_read_write_chan_fn cb, void * userdata);
  50 void rc_for_all_writes_chan(struct rc_instruction * inst, rc_read_write_chan_fn cb, void * userdata);
  51
  52 typedef void (*rc_read_write_mask_fn)(void * userdata, struct rc_instruction * inst,
  53                         rc_register_file file, unsigned int index, unsigned int mask);
  54 void rc_for_all_reads_mask(struct rc_instruction * inst, rc_read_write_mask_fn cb, void * userdata);
  55 void rc_for_all_writes_mask(struct rc_instruction * inst, rc_read_write_mask_fn cb, void * userdata);
  56
  57 typedef void (*rc_read_src_fn)(void * userdata, struct rc_instruction * inst,
  58                         struct rc_src_register * src);
  59 void rc_for_all_reads_src(struct rc_instruction * inst, rc_read_src_fn cb,
  60                         void * userdata);
  61
  62 typedef void (*rc_pair_read_arg_fn)(void * userdata,
  63         struct rc_instruction * inst, struct rc_pair_instruction_arg * arg,
  64         struct rc_pair_instruction_source * src);
  65 void rc_pair_for_all_reads_arg(struct rc_instruction * inst,
  66                                         rc_pair_read_arg_fn cb, void * userdata);
  67
  68 typedef void (*rc_remap_register_fn)(void * userdata, struct rc_instruction * inst,
  69                         rc_register_file * pfile, unsigned int * pindex);
  70 void rc_remap_registers(struct rc_instruction * inst, rc_remap_register_fn cb, void * userdata);
  71 /*@}*/
  72
  73 struct rc_reader {
  74         struct rc_instruction * Inst;
  75         unsigned int WriteMask;
  76         union {
  77                 struct rc_src_register * Src;
  78                 struct rc_pair_instruction_arg * Arg;
  79         } U;
  80 };
  81
  82 struct rc_reader_data {
  83         unsigned int Abort;
  84         unsigned int AbortOnRead;
  85         unsigned int InElse;
  86         struct rc_instruction * Writer;
  87
  88         unsigned int ReaderCount;
  89         unsigned int ReadersReserved;
  90         struct rc_reader * Readers;
  91
  92         void * CbData;
  93 };
  94
  95 void rc_get_readers(
  96         struct radeon_compiler * c,
  97         struct rc_instruction * writer,
  98         struct rc_reader_data * data,
  99         rc_read_src_fn read_normal_cb,
 100         rc_pair_read_arg_fn read_pair_cb,
 101         rc_read_write_mask_fn write_cb);
 102 /**
 103  * Compiler passes based on dataflow analysis.
 104  */
 105 /*@{*/
 106 typedef void (*rc_dataflow_mark_outputs_fn)(void * userdata, void * data,
 107                         void (*mark_fn)(void * data, unsigned int index, unsigned int mask));
 108 void rc_dataflow_deadcode(struct radeon_compiler * c, void *user);
 109 void rc_dataflow_swizzles(struct radeon_compiler * c, void *user);
 110 /*@}*/
 111
 112 void rc_optimize(struct radeon_compiler * c, void *user);
 113
 114 #endif /* RADEON_DATAFLOW_H */