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, 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 ${'nir_op_{0}2{1}{2}'.format(src_t[0], dst_t[0], dst_bits)};
  80 %                    endif
  81 %                 endfor
  82                   default:
  83                      unreachable("Invalid nir alu bit size");
  84                }
  85 %           endfor
  86             case nir_type_bool:
  87 %              if src_t == 'float':
  88                   return nir_op_f2b;
  89 %              else:
  90                   return nir_op_i2b;
  91 %              endif
  92             default:
  93                unreachable("Invalid nir alu base type");
  94          }
  95 %     endfor
  96       case nir_type_bool:
  97          switch (dst_base) {
  98             case nir_type_int:
  99             case nir_type_uint:
 100                return nir_op_b2i;
 101             case nir_type_float:
 102                return nir_op_b2f;
 103             default:
 104                unreachable("Invalid nir alu base type");
 105          }
 106       default:
 107          unreachable("Invalid nir alu base type");
 108    }
 109 }
 110
 111 const nir_op_info nir_op_infos[nir_num_opcodes] = {
 112 % for name, opcode in sorted(opcodes.iteritems()):
 113 {
 114    .name = "${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
 133 print template.render(opcodes=opcodes)