1 /*
2 * Copyright © 2015 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 #include "brw_fs.h"
25 #include "brw_cfg.h"
26 #include "brw_fs_builder.h"
27
28 using namespace brw;
29
30 bool
lower_pack()31 fs_visitor::lower_pack()
32 {
33 bool progress = false;
34
35 foreach_block_and_inst_safe(block, fs_inst, inst, cfg) {
36 if (inst->opcode != FS_OPCODE_PACK)
37 continue;
38
39 assert(inst->dst.file == VGRF);
40 assert(inst->saturate == false);
41 fs_reg dst = inst->dst;
42
43 const fs_builder ibld(this, block, inst);
44 for (unsigned i = 0; i < inst->sources; i++)
45 ibld.MOV(subscript(dst, inst->src[i].type, i), inst->src[i]);
46
47 inst->remove(block);
48 progress = true;
49 }
50
51 if (progress)
52 invalidate_live_intervals();
53
54 return progress;
55 }
56