2 * Copyright © 2015 Intel Corporation
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:
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
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
26 #include "nir_builder.h"
31 * packDouble2x32(foo) -> packDouble2x32Split(foo.x, foo.y)
32 * unpackDouble2x32(foo) -> vec2(unpackDouble2x32_x(foo), unpackDouble2x32_y(foo))
33 * packInt2x32(foo) -> packInt2x32Split(foo.x, foo.y)
34 * unpackInt2x32(foo) -> vec2(unpackInt2x32_x(foo), unpackInt2x32_y(foo))
38 lower_pack_64(nir_builder
*b
, nir_ssa_def
*src
)
40 return nir_pack_64_2x32_split(b
, nir_channel(b
, src
, 0),
41 nir_channel(b
, src
, 1));
45 lower_unpack_64(nir_builder
*b
, nir_ssa_def
*src
)
47 return nir_vec2(b
, nir_unpack_64_2x32_split_x(b
, src
),
48 nir_unpack_64_2x32_split_y(b
, src
));
52 lower_64bit_pack_impl(nir_function_impl
*impl
)
55 nir_builder_init(&b
, impl
);
56 bool progress
= false;
58 nir_foreach_block(block
, impl
) {
59 nir_foreach_instr_safe(instr
, block
) {
60 if (instr
->type
!= nir_instr_type_alu
)
63 nir_alu_instr
*alu_instr
= (nir_alu_instr
*) instr
;
65 if (alu_instr
->op
!= nir_op_pack_64_2x32
&&
66 alu_instr
->op
!= nir_op_unpack_64_2x32
)
69 b
.cursor
= nir_before_instr(&alu_instr
->instr
);
71 nir_ssa_def
*src
= nir_ssa_for_alu_src(&b
, alu_instr
, 0);
74 switch (alu_instr
->op
) {
75 case nir_op_pack_64_2x32
:
76 dest
= lower_pack_64(&b
, src
);
78 case nir_op_unpack_64_2x32
:
79 dest
= lower_unpack_64(&b
, src
);
82 unreachable("Impossible opcode");
85 nir_ssa_def_rewrite_uses(&alu_instr
->dest
.dest
.ssa
, nir_src_for_ssa(dest
));
86 nir_instr_remove(&alu_instr
->instr
);
87 nir_metadata_preserve(impl
, nir_metadata_block_index
|
88 nir_metadata_dominance
);
97 nir_lower_64bit_pack(nir_shader
*shader
)
99 bool progress
= false;
101 nir_foreach_function(function
, shader
) {
103 progress
|= lower_64bit_pack_impl(function
->impl
);