src/compiler/nir/nir_opcodes_c.py

   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
  26 from nir_opcodes import opcodes
  27 from mako.template import Template
  28
  29 template = Template("""
  30 #include "nir.h"
  31
  32 nir_op
  33 nir_type_conversion_op(nir_alu_type src, nir_alu_type dst)
  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 [32, 64]:
  66                   case ${dst_bits}:
  67                      return ${'nir_op_{}2{}{}'.format(src_t[0], dst_t[0], dst_bits)};
  68 %                 endfor
  69                   default:
  70                      unreachable("Invalid nir alu bit size");
  71                }
  72 %           endfor
  73             case nir_type_bool:
  74 %              if src_t == 'float':
  75                   return nir_op_f2b;
  76 %              else:
  77                   return nir_op_i2b;
  78 %              endif
  79             default:
  80                unreachable("Invalid nir alu base type");
  81          }
  82 %     endfor
  83       case nir_type_bool:
  84          switch (dst_base) {
  85             case nir_type_int:
  86             case nir_type_uint:
  87                return nir_op_b2i;
  88             case nir_type_float:
  89                return nir_op_b2f;
  90             default:
  91                unreachable("Invalid nir alu base type");
  92          }
  93       default:
  94          unreachable("Invalid nir alu base type");
  95    }
  96 }
  97
  98 const nir_op_info nir_op_infos[nir_num_opcodes] = {
  99 % for name, opcode in sorted(opcodes.iteritems()):
 100 {
 101    .name = "${name}",
 102    .num_inputs = ${opcode.num_inputs},
 103    .output_size = ${opcode.output_size},
 104    .output_type = ${"nir_type_" + opcode.output_type},
 105    .input_sizes = {
 106       ${ ", ".join(str(size) for size in opcode.input_sizes) }
 107    },
 108    .input_types = {
 109       ${ ", ".join("nir_type_" + type for type in opcode.input_types) }
 110    },
 111    .algebraic_properties =
 112       ${ "0" if opcode.algebraic_properties == "" else " | ".join(
 113             "NIR_OP_IS_" + prop.upper() for prop in
 114                opcode.algebraic_properties.strip().split(" ")) }
 115 },
 116 % endfor
 117 };
 118 """)
 119
 120 print template.render(opcodes=opcodes)