src/mesa/drivers/dri/i965/brw_cfg.h

   1 /*
   2  * Copyright © 2012 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *
  26  */
  27
  28 #include "brw_fs.h"
  29
  30 class bblock_link : public exec_node {
  31 public:
  32    bblock_link(bblock_t *block)
  33       : block(block)
  34    {
  35    }
  36
  37    bblock_t *block;
  38 };
  39
  40 class bblock_t {
  41 public:
  42    static void* operator new(size_t size, void *ctx)
  43    {
  44       void *node;
  45
  46       node = rzalloc_size(ctx, size);
  47       assert(node != NULL);
  48
  49       return node;
  50    }
  51
  52    bblock_link *make_list(void *mem_ctx);
  53
  54    bblock_t();
  55
  56    void add_successor(void *mem_ctx, bblock_t *successor);
  57
  58    backend_instruction *start;
  59    backend_instruction *end;
  60
  61    int start_ip;
  62    int end_ip;
  63
  64    exec_list parents;
  65    exec_list children;
  66    int block_num;
  67 };
  68
  69 class cfg_t {
  70 public:
  71    static void* operator new(size_t size, void *ctx)
  72    {
  73       void *node;
  74
  75       node = rzalloc_size(ctx, size);
  76       assert(node != NULL);
  77
  78       return node;
  79    }
  80
  81    cfg_t(backend_visitor *v);
  82    cfg_t(void *mem_ctx, exec_list *instructions);
  83    ~cfg_t();
  84
  85    void create(void *mem_ctx, exec_list *instructions);
  86
  87    bblock_t *new_block();
  88    void set_next_block(bblock_t *block);
  89    void make_block_array();
  90
  91    /** @{
  92     *
  93     * Used while generating the block list.
  94     */
  95    bblock_t *cur;
  96    int ip;
  97    /** @} */
  98
  99    void *mem_ctx;
 100
 101    /** Ordered list (by ip) of basic blocks */
 102    exec_list block_list;
 103    bblock_t **blocks;
 104    int num_blocks;
 105 };