src/panfrost/util/pan_ir.c

   1 /*
   2  * Copyright (C) 2020 Collabora Ltd.
   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 FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors (Collabora):
  24  *      Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
  25  */
  26
  27 #include "pan_ir.h"
  28 #include "util/macros.h"
  29
  30 /* Converts a per-component mask to a byte mask */
  31
  32 uint16_t
  33 pan_to_bytemask(unsigned bytes, unsigned mask)
  34 {
  35         switch (bytes) {
  36         case 0:
  37                 assert(mask == 0);
  38                 return 0;
  39
  40         case 8:
  41                 return mask;
  42
  43         case 16: {
  44                 unsigned space =
  45                         (mask & 0x1) |
  46                         ((mask & 0x2) << (2 - 1)) |
  47                         ((mask & 0x4) << (4 - 2)) |
  48                         ((mask & 0x8) << (6 - 3)) |
  49                         ((mask & 0x10) << (8 - 4)) |
  50                         ((mask & 0x20) << (10 - 5)) |
  51                         ((mask & 0x40) << (12 - 6)) |
  52                         ((mask & 0x80) << (14 - 7));
  53
  54                 return space | (space << 1);
  55         }
  56
  57         case 32: {
  58                 unsigned space =
  59                         (mask & 0x1) |
  60                         ((mask & 0x2) << (4 - 1)) |
  61                         ((mask & 0x4) << (8 - 2)) |
  62                         ((mask & 0x8) << (12 - 3));
  63
  64                 return space | (space << 1) | (space << 2) | (space << 3);
  65         }
  66
  67         case 64: {
  68                 unsigned A = (mask & 0x1) ? 0xFF : 0x00;
  69                 unsigned B = (mask & 0x2) ? 0xFF : 0x00;
  70                 return A | (B << 8);
  71         }
  72
  73         default:
  74                 unreachable("Invalid register mode");
  75         }
  76 }
  77
  78 void
  79 pan_block_add_successor(pan_block *block, pan_block *successor)
  80 {
  81         assert(block);
  82         assert(successor);
  83
  84         for (unsigned i = 0; i < ARRAY_SIZE(block->successors); ++i) {
  85                 if (block->successors[i]) {
  86                        if (block->successors[i] == successor)
  87                                return;
  88                        else
  89                                continue;
  90                 }
  91
  92                 block->successors[i] = successor;
  93                 _mesa_set_add(successor->predecessors, block);
  94                 return;
  95         }
  96
  97         unreachable("Too many successors");
  98 }
  99
 100 /* Prints a NIR ALU type in Bifrost-style ".f32" ".i8" etc */
 101
 102 void
 103 pan_print_alu_type(nir_alu_type t, FILE *fp)
 104 {
 105         unsigned size = nir_alu_type_get_type_size(t);
 106         nir_alu_type base = nir_alu_type_get_base_type(t);
 107
 108         switch (base) {
 109         case nir_type_int:
 110                 fprintf(fp, ".i");
 111                 break;
 112         case nir_type_uint:
 113                 fprintf(fp, ".u");
 114                 break;
 115         case nir_type_bool:
 116                 fprintf(fp, ".b");
 117                 break;
 118         case nir_type_float:
 119                 fprintf(fp, ".f");
 120                 break;
 121         default:
 122                 fprintf(fp, ".unknown");
 123                 break;
 124         }
 125
 126         fprintf(fp, "%u", size);
 127 }