nir_opcodes_c.py revision 01e04c3f 
1#
2# Copyright (C) 2014 Connor Abbott
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#    Connor Abbott (cwabbott0@gmail.com)
25
26from __future__ import print_function
27
28from nir_opcodes import opcodes
29from mako.template import Template
30
31template = Template("""
32#include "nir.h"
33
34nir_op
35nir_type_conversion_op(nir_alu_type src, nir_alu_type dst, nir_rounding_mode rnd)
36{
37   nir_alu_type src_base = (nir_alu_type) nir_alu_type_get_base_type(src);
38   nir_alu_type dst_base = (nir_alu_type) nir_alu_type_get_base_type(dst);
39   unsigned src_bit_size = nir_alu_type_get_type_size(src);
40   unsigned dst_bit_size = nir_alu_type_get_type_size(dst);
41
42   if (src == dst && src_base == nir_type_float) {
43      return nir_op_fmov;
44   } else if ((src_base == nir_type_int || src_base == nir_type_uint) &&
45              (dst_base == nir_type_int || dst_base == nir_type_uint) &&
46              src_bit_size == dst_bit_size) {
47      /* Integer <-> integer conversions with the same bit-size on both
48       * ends are just no-op moves.
49       */
50      return nir_op_imov;
51   }
52
53   switch (src_base) {
54%     for src_t in ['int', 'uint', 'float']:
55      case nir_type_${src_t}:
56         switch (dst_base) {
57%           for dst_t in ['int', 'uint', 'float']:
58            case nir_type_${dst_t}:
59%              if src_t in ['int', 'uint'] and dst_t in ['int', 'uint']:
60%                 if dst_t == 'int':
61<%                   continue %>
62%                 else:
63<%                   dst_t = src_t %>
64%                 endif
65%              endif
66               switch (dst_bit_size) {
67%                 if dst_t == 'float':
68<%                    bit_sizes = [16, 32, 64] %>
69%                 else:
70<%                    bit_sizes = [8, 16, 32, 64] %>
71%                 endif
72%                 for dst_bits in bit_sizes:
73                  case ${dst_bits}:
74%                    if src_t == 'float' and dst_t == 'float' and dst_bits == 16:
75                     switch(rnd) {
76%                       for rnd_t in [('rtne', '_rtne'), ('rtz', '_rtz'), ('undef', '')]:
77                        case nir_rounding_mode_${rnd_t[0]}:
78                           return ${'nir_op_{0}2{1}{2}{3}'.format(src_t[0], dst_t[0],
79                                                                   dst_bits, rnd_t[1])};
80%                       endfor
81                        default:
82                           unreachable("Invalid 16-bit nir rounding mode");
83                     }
84%                    else:
85                     assert(rnd == nir_rounding_mode_undef);
86                     return ${'nir_op_{0}2{1}{2}'.format(src_t[0], dst_t[0], dst_bits)};
87%                    endif
88%                 endfor
89                  default:
90                     unreachable("Invalid nir alu bit size");
91               }
92%           endfor
93            case nir_type_bool:
94%              if src_t == 'float':
95                  return nir_op_f2b;
96%              else:
97                  return nir_op_i2b;
98%              endif
99            default:
100               unreachable("Invalid nir alu base type");
101         }
102%     endfor
103      case nir_type_bool:
104         switch (dst_base) {
105            case nir_type_int:
106            case nir_type_uint:
107               return nir_op_b2i;
108            case nir_type_float:
109               return nir_op_b2f;
110            default:
111               unreachable("Invalid nir alu base type");
112         }
113      default:
114         unreachable("Invalid nir alu base type");
115   }
116}
117
118const nir_op_info nir_op_infos[nir_num_opcodes] = {
119% for name, opcode in sorted(opcodes.items()):
120{
121   .name = "${name}",
122   .num_inputs = ${opcode.num_inputs},
123   .output_size = ${opcode.output_size},
124   .output_type = ${"nir_type_" + opcode.output_type},
125   .input_sizes = {
126      ${ ", ".join(str(size) for size in opcode.input_sizes) }
127   },
128   .input_types = {
129      ${ ", ".join("nir_type_" + type for type in opcode.input_types) }
130   },
131   .algebraic_properties =
132      ${ "0" if opcode.algebraic_properties == "" else " | ".join(
133            "NIR_OP_IS_" + prop.upper() for prop in
134               opcode.algebraic_properties.strip().split(" ")) }
135},
136% endfor
137};
138""")
139
140print(template.render(opcodes=opcodes))
141