src/compiler/spirv/vtn_gather_types_c.py

   1 COPYRIGHT = """\
   2 /*
   3  * Copyright (C) 2017 Intel Corporation
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  */
  24 """
  25
  26 import argparse
  27 import json
  28 from sys import stdout
  29 from mako.template import Template
  30
  31 def find_result_types(spirv):
  32     for inst in spirv['instructions']:
  33         name = inst['opname']
  34
  35         if 'operands' not in inst:
  36             continue
  37
  38         res_arg_idx = -1
  39         res_type_arg_idx = -1
  40         for idx, arg in enumerate(inst['operands']):
  41             if arg['kind'] == 'IdResult':
  42                 res_arg_idx = idx
  43             elif arg['kind'] == 'IdResultType':
  44                 res_type_arg_idx = idx
  45
  46         if res_type_arg_idx >= 0:
  47             assert res_arg_idx >= 0
  48         elif res_arg_idx >= 0:
  49             untyped_insts = [
  50                 'OpString',
  51                 'OpExtInstImport',
  52                 'OpDecorationGroup',
  53                 'OpLabel',
  54             ]
  55             assert name.startswith('OpType') or name in untyped_insts
  56
  57         if res_arg_idx >= 0 or res_type_arg_idx >= 0:
  58             yield (name, res_arg_idx, res_type_arg_idx)
  59
  60 TEMPLATE  = Template(COPYRIGHT + """\
  61
  62 /* DO NOT EDIT - This file is generated automatically by the
  63  * vtn_gather_types_c.py script
  64  */
  65
  66 #include "vtn_private.h"
  67
  68 struct type_args {
  69     int res_idx;
  70     int res_type_idx;
  71 };
  72
  73 static struct type_args
  74 result_type_args_for_opcode(SpvOp opcode)
  75 {
  76    switch (opcode) {
  77 % for opcode in opcodes:
  78    case Spv${opcode[0]}: return (struct type_args){ ${opcode[1]}, ${opcode[2]} };
  79 % endfor
  80    default: return (struct type_args){ -1, -1 };
  81    }
  82 }
  83
  84 bool
  85 vtn_set_instruction_result_type(struct vtn_builder *b, SpvOp opcode,
  86                                 const uint32_t *w, unsigned count)
  87 {
  88    struct type_args args = result_type_args_for_opcode(opcode);
  89
  90    if (args.res_idx >= 0 && args.res_type_idx >= 0) {
  91       struct vtn_value *val = vtn_untyped_value(b, w[1 + args.res_idx]);
  92       val->type = vtn_value(b, w[1 + args.res_type_idx],
  93                             vtn_value_type_type)->type;
  94    }
  95
  96    return true;
  97 }
  98
  99 """)
 100
 101 if __name__ == "__main__":
 102     p = argparse.ArgumentParser()
 103     p.add_argument("json")
 104     p.add_argument("out")
 105     args = p.parse_args()
 106
 107     spirv_info = json.JSONDecoder().decode(open(args.json, "r").read())
 108
 109     opcodes = list(find_result_types(spirv_info))
 110
 111     try:
 112         with open(args.out, 'w') as f:
 113             f.write(TEMPLATE.render(opcodes=opcodes))
 114     except Exception:
 115         # In the even there's an error this imports some helpers from mako
 116         # to print a useful stack trace and prints it, then exits with
 117         # status 1, if python is run with debug; otherwise it just raises
 118         # the exception
 119         if __debug__:
 120             import sys
 121             from mako import exceptions
 122             sys.stderr.write(exceptions.text_error_template().render() + '\n')
 123             sys.exit(1)
 124         raise