1 /*
2 * Copyright 2019 Valve Corporation
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 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24 #include "ac_shader_args.h"
25
26 #include "nir/nir_builder.h"
27
ac_add_arg(struct ac_shader_args * info,enum ac_arg_regfile regfile,unsigned size,enum ac_arg_type type,struct ac_arg * arg)28 void ac_add_arg(struct ac_shader_args *info, enum ac_arg_regfile regfile, unsigned size,
29 enum ac_arg_type type, struct ac_arg *arg)
30 {
31 assert(info->arg_count < AC_MAX_ARGS);
32
33 unsigned offset;
34 if (regfile == AC_ARG_SGPR) {
35 offset = info->num_sgprs_used;
36 info->num_sgprs_used += size;
37 } else {
38 assert(regfile == AC_ARG_VGPR);
39 offset = info->num_vgprs_used;
40 info->num_vgprs_used += size;
41 }
42
43 info->args[info->arg_count].file = regfile;
44 info->args[info->arg_count].offset = offset;
45 info->args[info->arg_count].size = size;
46 info->args[info->arg_count].type = type;
47
48 if (arg) {
49 arg->arg_index = info->arg_count;
50 arg->used = true;
51 }
52
53 info->arg_count++;
54 }
55
ac_add_return(struct ac_shader_args * info,enum ac_arg_regfile regfile)56 void ac_add_return(struct ac_shader_args *info, enum ac_arg_regfile regfile)
57 {
58 assert(info->return_count < AC_MAX_ARGS);
59
60 if (regfile == AC_ARG_SGPR) {
61 /* SGPRs must be inserted before VGPRs. */
62 assert(info->num_vgprs_returned == 0);
63 info->num_sgprs_returned++;;
64 } else {
65 assert(regfile == AC_ARG_VGPR);
66 info->num_vgprs_returned++;
67 }
68
69 info->return_count++;
70 }
71