1 /*
2 * Copyright © 2017 Intel 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 * 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
24 #include "anv_nir.h"
25 #include "nir/nir_builder.h"
26 #include "compiler/brw_compiler.h"
27
28 static bool
anv_nir_add_base_work_group_id_instr(nir_builder * b,nir_instr * instr,UNUSED void * cb_data)29 anv_nir_add_base_work_group_id_instr(nir_builder *b,
30 nir_instr *instr,
31 UNUSED void *cb_data)
32 {
33 if (instr->type != nir_instr_type_intrinsic)
34 return false;
35
36 nir_intrinsic_instr *load_id = nir_instr_as_intrinsic(instr);
37 if (load_id->intrinsic != nir_intrinsic_load_workgroup_id)
38 return false;
39
40 b->cursor = nir_after_instr(&load_id->instr);
41
42 nir_ssa_def *load_base =
43 nir_load_push_constant(b, 3, 32, nir_imm_int(b, 0),
44 .base = offsetof(struct anv_push_constants, cs.base_work_group_id),
45 .range = 3 * sizeof(uint32_t));
46
47 nir_ssa_def *id = nir_iadd(b, &load_id->dest.ssa, load_base);
48
49 nir_ssa_def_rewrite_uses_after(&load_id->dest.ssa, id, id->parent_instr);
50 return true;
51 }
52
53 bool
anv_nir_add_base_work_group_id(nir_shader * shader)54 anv_nir_add_base_work_group_id(nir_shader *shader)
55 {
56 assert(shader->info.stage == MESA_SHADER_COMPUTE);
57
58 return nir_shader_instructions_pass(shader,
59 anv_nir_add_base_work_group_id_instr,
60 nir_metadata_block_index |
61 nir_metadata_dominance,
62 NULL);
63 }
64