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