030077a87c8cf60869bfe644ff347894257bea99
[mesa.git] / src / compiler / nir / nir_schedule.h
1 /*
2 * Copyright © 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
24 #ifndef NIR_SCHEDULE_H
25 #define NIR_SCHEDULE_H
26
27 #include "nir.h"
28
29 #ifdef __cplusplus
30 extern "C" {
31 #endif
32
33 typedef struct nir_schedule_options {
34 /* On some hardware with some stages the inputs and outputs to the shader
35 * share the same memory. In that case the scheduler needs to ensure that
36 * all output writes are scheduled after all of the input writes to avoid
37 * overwriting them. This is a bitmask of stages that need that.
38 */
39 unsigned stages_with_shared_io_memory;
40 /* The approximate amount of register pressure at which point the scheduler
41 * will try to reduce register usage.
42 */
43 int threshold;
44 } nir_schedule_options;
45
46 void nir_schedule(nir_shader *shader, const nir_schedule_options *options);
47
48 #ifdef __cplusplus
49 } /* extern "C" */
50 #endif
51
52 #endif /* NIR_SCHEDULE_H */