2 * Copyright © 2014-2015 Broadcom
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
27 #include "nir_control_flow.h"
28 #include "util/bitscan.h"
29 #include "util/half_float.h"
33 typedef struct nir_builder
{
36 /* Whether new ALU instructions will be marked "exact" */
40 nir_function_impl
*impl
;
44 nir_builder_init(nir_builder
*build
, nir_function_impl
*impl
)
46 memset(build
, 0, sizeof(*build
));
49 build
->shader
= impl
->function
->shader
;
53 nir_builder_init_simple_shader(nir_builder
*build
, void *mem_ctx
,
54 gl_shader_stage stage
,
55 const nir_shader_compiler_options
*options
)
57 build
->shader
= nir_shader_create(mem_ctx
, stage
, options
, NULL
);
58 nir_function
*func
= nir_function_create(build
->shader
, "main");
59 func
->is_entrypoint
= true;
61 build
->impl
= nir_function_impl_create(func
);
62 build
->cursor
= nir_after_cf_list(&build
->impl
->body
);
66 nir_builder_instr_insert(nir_builder
*build
, nir_instr
*instr
)
68 nir_instr_insert(build
->cursor
, instr
);
70 /* Move the cursor forward. */
71 build
->cursor
= nir_after_instr(instr
);
74 static inline nir_instr
*
75 nir_builder_last_instr(nir_builder
*build
)
77 assert(build
->cursor
.option
== nir_cursor_after_instr
);
78 return build
->cursor
.instr
;
82 nir_builder_cf_insert(nir_builder
*build
, nir_cf_node
*cf
)
84 nir_cf_node_insert(build
->cursor
, cf
);
88 nir_builder_is_inside_cf(nir_builder
*build
, nir_cf_node
*cf_node
)
90 nir_block
*block
= nir_cursor_current_block(build
->cursor
);
91 for (nir_cf_node
*n
= &block
->cf_node
; n
; n
= n
->parent
) {
98 static inline nir_if
*
99 nir_push_if_src(nir_builder
*build
, nir_src condition
)
101 nir_if
*nif
= nir_if_create(build
->shader
);
102 nif
->condition
= condition
;
103 nir_builder_cf_insert(build
, &nif
->cf_node
);
104 build
->cursor
= nir_before_cf_list(&nif
->then_list
);
108 static inline nir_if
*
109 nir_push_if(nir_builder
*build
, nir_ssa_def
*condition
)
111 return nir_push_if_src(build
, nir_src_for_ssa(condition
));
114 static inline nir_if
*
115 nir_push_else(nir_builder
*build
, nir_if
*nif
)
118 assert(nir_builder_is_inside_cf(build
, &nif
->cf_node
));
120 nir_block
*block
= nir_cursor_current_block(build
->cursor
);
121 nif
= nir_cf_node_as_if(block
->cf_node
.parent
);
123 build
->cursor
= nir_before_cf_list(&nif
->else_list
);
128 nir_pop_if(nir_builder
*build
, nir_if
*nif
)
131 assert(nir_builder_is_inside_cf(build
, &nif
->cf_node
));
133 nir_block
*block
= nir_cursor_current_block(build
->cursor
);
134 nif
= nir_cf_node_as_if(block
->cf_node
.parent
);
136 build
->cursor
= nir_after_cf_node(&nif
->cf_node
);
139 static inline nir_ssa_def
*
140 nir_if_phi(nir_builder
*build
, nir_ssa_def
*then_def
, nir_ssa_def
*else_def
)
142 nir_block
*block
= nir_cursor_current_block(build
->cursor
);
143 nir_if
*nif
= nir_cf_node_as_if(nir_cf_node_prev(&block
->cf_node
));
145 nir_phi_instr
*phi
= nir_phi_instr_create(build
->shader
);
147 nir_phi_src
*src
= ralloc(phi
, nir_phi_src
);
148 src
->pred
= nir_if_last_then_block(nif
);
149 src
->src
= nir_src_for_ssa(then_def
);
150 exec_list_push_tail(&phi
->srcs
, &src
->node
);
152 src
= ralloc(phi
, nir_phi_src
);
153 src
->pred
= nir_if_last_else_block(nif
);
154 src
->src
= nir_src_for_ssa(else_def
);
155 exec_list_push_tail(&phi
->srcs
, &src
->node
);
157 assert(then_def
->num_components
== else_def
->num_components
);
158 assert(then_def
->bit_size
== else_def
->bit_size
);
159 nir_ssa_dest_init(&phi
->instr
, &phi
->dest
,
160 then_def
->num_components
, then_def
->bit_size
, NULL
);
162 nir_builder_instr_insert(build
, &phi
->instr
);
164 return &phi
->dest
.ssa
;
167 static inline nir_loop
*
168 nir_push_loop(nir_builder
*build
)
170 nir_loop
*loop
= nir_loop_create(build
->shader
);
171 nir_builder_cf_insert(build
, &loop
->cf_node
);
172 build
->cursor
= nir_before_cf_list(&loop
->body
);
177 nir_pop_loop(nir_builder
*build
, nir_loop
*loop
)
180 assert(nir_builder_is_inside_cf(build
, &loop
->cf_node
));
182 nir_block
*block
= nir_cursor_current_block(build
->cursor
);
183 loop
= nir_cf_node_as_loop(block
->cf_node
.parent
);
185 build
->cursor
= nir_after_cf_node(&loop
->cf_node
);
188 static inline nir_ssa_def
*
189 nir_ssa_undef(nir_builder
*build
, unsigned num_components
, unsigned bit_size
)
191 nir_ssa_undef_instr
*undef
=
192 nir_ssa_undef_instr_create(build
->shader
, num_components
, bit_size
);
196 nir_instr_insert(nir_before_cf_list(&build
->impl
->body
), &undef
->instr
);
201 static inline nir_ssa_def
*
202 nir_build_imm(nir_builder
*build
, unsigned num_components
,
203 unsigned bit_size
, const nir_const_value
*value
)
205 nir_load_const_instr
*load_const
=
206 nir_load_const_instr_create(build
->shader
, num_components
, bit_size
);
210 memcpy(load_const
->value
, value
, sizeof(nir_const_value
) * num_components
);
212 nir_builder_instr_insert(build
, &load_const
->instr
);
214 return &load_const
->def
;
217 static inline nir_ssa_def
*
218 nir_imm_zero(nir_builder
*build
, unsigned num_components
, unsigned bit_size
)
220 nir_load_const_instr
*load_const
=
221 nir_load_const_instr_create(build
->shader
, num_components
, bit_size
);
223 /* nir_load_const_instr_create uses rzalloc so it's already zero */
225 nir_builder_instr_insert(build
, &load_const
->instr
);
227 return &load_const
->def
;
230 static inline nir_ssa_def
*
231 nir_imm_boolN_t(nir_builder
*build
, bool x
, unsigned bit_size
)
233 nir_const_value v
= nir_const_value_for_bool(x
, bit_size
);
234 return nir_build_imm(build
, 1, bit_size
, &v
);
237 static inline nir_ssa_def
*
238 nir_imm_bool(nir_builder
*build
, bool x
)
240 return nir_imm_boolN_t(build
, x
, 1);
243 static inline nir_ssa_def
*
244 nir_imm_true(nir_builder
*build
)
246 return nir_imm_bool(build
, true);
249 static inline nir_ssa_def
*
250 nir_imm_false(nir_builder
*build
)
252 return nir_imm_bool(build
, false);
255 static inline nir_ssa_def
*
256 nir_imm_floatN_t(nir_builder
*build
, double x
, unsigned bit_size
)
258 nir_const_value v
= nir_const_value_for_float(x
, bit_size
);
259 return nir_build_imm(build
, 1, bit_size
, &v
);
262 static inline nir_ssa_def
*
263 nir_imm_float16(nir_builder
*build
, float x
)
265 return nir_imm_floatN_t(build
, x
, 16);
268 static inline nir_ssa_def
*
269 nir_imm_float(nir_builder
*build
, float x
)
271 return nir_imm_floatN_t(build
, x
, 32);
274 static inline nir_ssa_def
*
275 nir_imm_double(nir_builder
*build
, double x
)
277 return nir_imm_floatN_t(build
, x
, 64);
280 static inline nir_ssa_def
*
281 nir_imm_vec2(nir_builder
*build
, float x
, float y
)
283 nir_const_value v
[2] = {
284 nir_const_value_for_float(x
, 32),
285 nir_const_value_for_float(y
, 32),
287 return nir_build_imm(build
, 2, 32, v
);
290 static inline nir_ssa_def
*
291 nir_imm_vec4(nir_builder
*build
, float x
, float y
, float z
, float w
)
293 nir_const_value v
[4] = {
294 nir_const_value_for_float(x
, 32),
295 nir_const_value_for_float(y
, 32),
296 nir_const_value_for_float(z
, 32),
297 nir_const_value_for_float(w
, 32),
300 return nir_build_imm(build
, 4, 32, v
);
303 static inline nir_ssa_def
*
304 nir_imm_vec4_16(nir_builder
*build
, float x
, float y
, float z
, float w
)
306 nir_const_value v
[4] = {
307 nir_const_value_for_float(x
, 16),
308 nir_const_value_for_float(y
, 16),
309 nir_const_value_for_float(z
, 16),
310 nir_const_value_for_float(w
, 16),
313 return nir_build_imm(build
, 4, 16, v
);
316 static inline nir_ssa_def
*
317 nir_imm_intN_t(nir_builder
*build
, uint64_t x
, unsigned bit_size
)
319 nir_const_value v
= nir_const_value_for_raw_uint(x
, bit_size
);
320 return nir_build_imm(build
, 1, bit_size
, &v
);
323 static inline nir_ssa_def
*
324 nir_imm_int(nir_builder
*build
, int x
)
326 return nir_imm_intN_t(build
, x
, 32);
329 static inline nir_ssa_def
*
330 nir_imm_int64(nir_builder
*build
, int64_t x
)
332 return nir_imm_intN_t(build
, x
, 64);
335 static inline nir_ssa_def
*
336 nir_imm_ivec2(nir_builder
*build
, int x
, int y
)
338 nir_const_value v
[2] = {
339 nir_const_value_for_int(x
, 32),
340 nir_const_value_for_int(y
, 32),
343 return nir_build_imm(build
, 2, 32, v
);
346 static inline nir_ssa_def
*
347 nir_imm_ivec4(nir_builder
*build
, int x
, int y
, int z
, int w
)
349 nir_const_value v
[4] = {
350 nir_const_value_for_int(x
, 32),
351 nir_const_value_for_int(y
, 32),
352 nir_const_value_for_int(z
, 32),
353 nir_const_value_for_int(w
, 32),
356 return nir_build_imm(build
, 4, 32, v
);
359 static inline nir_ssa_def
*
360 nir_builder_alu_instr_finish_and_insert(nir_builder
*build
, nir_alu_instr
*instr
)
362 const nir_op_info
*op_info
= &nir_op_infos
[instr
->op
];
364 instr
->exact
= build
->exact
;
366 /* Guess the number of components the destination temporary should have
367 * based on our input sizes, if it's not fixed for the op.
369 unsigned num_components
= op_info
->output_size
;
370 if (num_components
== 0) {
371 for (unsigned i
= 0; i
< op_info
->num_inputs
; i
++) {
372 if (op_info
->input_sizes
[i
] == 0)
373 num_components
= MAX2(num_components
,
374 instr
->src
[i
].src
.ssa
->num_components
);
377 assert(num_components
!= 0);
379 /* Figure out the bitwidth based on the source bitwidth if the instruction
382 unsigned bit_size
= nir_alu_type_get_type_size(op_info
->output_type
);
384 for (unsigned i
= 0; i
< op_info
->num_inputs
; i
++) {
385 unsigned src_bit_size
= instr
->src
[i
].src
.ssa
->bit_size
;
386 if (nir_alu_type_get_type_size(op_info
->input_types
[i
]) == 0) {
388 assert(src_bit_size
== bit_size
);
390 bit_size
= src_bit_size
;
392 assert(src_bit_size
==
393 nir_alu_type_get_type_size(op_info
->input_types
[i
]));
398 /* When in doubt, assume 32. */
402 /* Make sure we don't swizzle from outside of our source vector (like if a
403 * scalar value was passed into a multiply with a vector).
405 for (unsigned i
= 0; i
< op_info
->num_inputs
; i
++) {
406 for (unsigned j
= instr
->src
[i
].src
.ssa
->num_components
;
407 j
< NIR_MAX_VEC_COMPONENTS
; j
++) {
408 instr
->src
[i
].swizzle
[j
] = instr
->src
[i
].src
.ssa
->num_components
- 1;
412 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
.dest
, num_components
,
414 instr
->dest
.write_mask
= (1 << num_components
) - 1;
416 nir_builder_instr_insert(build
, &instr
->instr
);
418 return &instr
->dest
.dest
.ssa
;
421 static inline nir_ssa_def
*
422 nir_build_alu(nir_builder
*build
, nir_op op
, nir_ssa_def
*src0
,
423 nir_ssa_def
*src1
, nir_ssa_def
*src2
, nir_ssa_def
*src3
)
425 nir_alu_instr
*instr
= nir_alu_instr_create(build
->shader
, op
);
429 instr
->src
[0].src
= nir_src_for_ssa(src0
);
431 instr
->src
[1].src
= nir_src_for_ssa(src1
);
433 instr
->src
[2].src
= nir_src_for_ssa(src2
);
435 instr
->src
[3].src
= nir_src_for_ssa(src3
);
437 return nir_builder_alu_instr_finish_and_insert(build
, instr
);
440 /* for the couple special cases with more than 4 src args: */
441 static inline nir_ssa_def
*
442 nir_build_alu_src_arr(nir_builder
*build
, nir_op op
, nir_ssa_def
**srcs
)
444 const nir_op_info
*op_info
= &nir_op_infos
[op
];
445 nir_alu_instr
*instr
= nir_alu_instr_create(build
->shader
, op
);
449 for (unsigned i
= 0; i
< op_info
->num_inputs
; i
++)
450 instr
->src
[i
].src
= nir_src_for_ssa(srcs
[i
]);
452 return nir_builder_alu_instr_finish_and_insert(build
, instr
);
455 #include "nir_builder_opcodes.h"
457 static inline nir_ssa_def
*
458 nir_vec(nir_builder
*build
, nir_ssa_def
**comp
, unsigned num_components
)
460 return nir_build_alu_src_arr(build
, nir_op_vec(num_components
), comp
);
463 static inline nir_ssa_def
*
464 nir_mov_alu(nir_builder
*build
, nir_alu_src src
, unsigned num_components
)
466 assert(!src
.abs
&& !src
.negate
);
467 if (src
.src
.is_ssa
&& src
.src
.ssa
->num_components
== num_components
) {
468 bool any_swizzles
= false;
469 for (unsigned i
= 0; i
< num_components
; i
++) {
470 if (src
.swizzle
[i
] != i
)
477 nir_alu_instr
*mov
= nir_alu_instr_create(build
->shader
, nir_op_mov
);
478 nir_ssa_dest_init(&mov
->instr
, &mov
->dest
.dest
, num_components
,
479 nir_src_bit_size(src
.src
), NULL
);
480 mov
->exact
= build
->exact
;
481 mov
->dest
.write_mask
= (1 << num_components
) - 1;
483 nir_builder_instr_insert(build
, &mov
->instr
);
485 return &mov
->dest
.dest
.ssa
;
489 * Construct an fmov or imov that reswizzles the source's components.
491 static inline nir_ssa_def
*
492 nir_swizzle(nir_builder
*build
, nir_ssa_def
*src
, const unsigned *swiz
,
493 unsigned num_components
)
495 assert(num_components
<= NIR_MAX_VEC_COMPONENTS
);
496 nir_alu_src alu_src
= { NIR_SRC_INIT
};
497 alu_src
.src
= nir_src_for_ssa(src
);
499 bool is_identity_swizzle
= true;
500 for (unsigned i
= 0; i
< num_components
&& i
< NIR_MAX_VEC_COMPONENTS
; i
++) {
502 is_identity_swizzle
= false;
503 alu_src
.swizzle
[i
] = swiz
[i
];
506 if (num_components
== src
->num_components
&& is_identity_swizzle
)
509 return nir_mov_alu(build
, alu_src
, num_components
);
512 /* Selects the right fdot given the number of components in each source. */
513 static inline nir_ssa_def
*
514 nir_fdot(nir_builder
*build
, nir_ssa_def
*src0
, nir_ssa_def
*src1
)
516 assert(src0
->num_components
== src1
->num_components
);
517 switch (src0
->num_components
) {
518 case 1: return nir_fmul(build
, src0
, src1
);
519 case 2: return nir_fdot2(build
, src0
, src1
);
520 case 3: return nir_fdot3(build
, src0
, src1
);
521 case 4: return nir_fdot4(build
, src0
, src1
);
522 case 8: return nir_fdot8(build
, src0
, src1
);
523 case 16: return nir_fdot16(build
, src0
, src1
);
525 unreachable("bad component size");
531 static inline nir_ssa_def
*
532 nir_ball_iequal(nir_builder
*b
, nir_ssa_def
*src0
, nir_ssa_def
*src1
)
534 switch (src0
->num_components
) {
535 case 1: return nir_ieq(b
, src0
, src1
);
536 case 2: return nir_ball_iequal2(b
, src0
, src1
);
537 case 3: return nir_ball_iequal3(b
, src0
, src1
);
538 case 4: return nir_ball_iequal4(b
, src0
, src1
);
539 case 8: return nir_ball_iequal8(b
, src0
, src1
);
540 case 16: return nir_ball_iequal16(b
, src0
, src1
);
542 unreachable("bad component size");
546 static inline nir_ssa_def
*
547 nir_ball(nir_builder
*b
, nir_ssa_def
*src
)
549 return nir_ball_iequal(b
, src
, nir_imm_true(b
));
552 static inline nir_ssa_def
*
553 nir_bany_inequal(nir_builder
*b
, nir_ssa_def
*src0
, nir_ssa_def
*src1
)
555 switch (src0
->num_components
) {
556 case 1: return nir_ine(b
, src0
, src1
);
557 case 2: return nir_bany_inequal2(b
, src0
, src1
);
558 case 3: return nir_bany_inequal3(b
, src0
, src1
);
559 case 4: return nir_bany_inequal4(b
, src0
, src1
);
560 case 8: return nir_bany_inequal8(b
, src0
, src1
);
561 case 16: return nir_bany_inequal16(b
, src0
, src1
);
563 unreachable("bad component size");
567 static inline nir_ssa_def
*
568 nir_bany(nir_builder
*b
, nir_ssa_def
*src
)
570 return nir_bany_inequal(b
, src
, nir_imm_false(b
));
573 static inline nir_ssa_def
*
574 nir_channel(nir_builder
*b
, nir_ssa_def
*def
, unsigned c
)
576 return nir_swizzle(b
, def
, &c
, 1);
579 static inline nir_ssa_def
*
580 nir_channels(nir_builder
*b
, nir_ssa_def
*def
, nir_component_mask_t mask
)
582 unsigned num_channels
= 0, swizzle
[NIR_MAX_VEC_COMPONENTS
] = { 0 };
584 for (unsigned i
= 0; i
< NIR_MAX_VEC_COMPONENTS
; i
++) {
585 if ((mask
& (1 << i
)) == 0)
587 swizzle
[num_channels
++] = i
;
590 return nir_swizzle(b
, def
, swizzle
, num_channels
);
593 static inline nir_ssa_def
*
594 _nir_vector_extract_helper(nir_builder
*b
, nir_ssa_def
*vec
, nir_ssa_def
*c
,
595 unsigned start
, unsigned end
)
597 if (start
== end
- 1) {
598 return nir_channel(b
, vec
, start
);
600 unsigned mid
= start
+ (end
- start
) / 2;
601 return nir_bcsel(b
, nir_ilt(b
, c
, nir_imm_intN_t(b
, mid
, c
->bit_size
)),
602 _nir_vector_extract_helper(b
, vec
, c
, start
, mid
),
603 _nir_vector_extract_helper(b
, vec
, c
, mid
, end
));
607 static inline nir_ssa_def
*
608 nir_vector_extract(nir_builder
*b
, nir_ssa_def
*vec
, nir_ssa_def
*c
)
610 nir_src c_src
= nir_src_for_ssa(c
);
611 if (nir_src_is_const(c_src
)) {
612 uint64_t c_const
= nir_src_as_uint(c_src
);
613 if (c_const
< vec
->num_components
)
614 return nir_channel(b
, vec
, c_const
);
616 return nir_ssa_undef(b
, 1, vec
->bit_size
);
618 return _nir_vector_extract_helper(b
, vec
, c
, 0, vec
->num_components
);
622 /** Replaces the component of `vec` specified by `c` with `scalar` */
623 static inline nir_ssa_def
*
624 nir_vector_insert_imm(nir_builder
*b
, nir_ssa_def
*vec
,
625 nir_ssa_def
*scalar
, unsigned c
)
627 assert(scalar
->num_components
== 1);
628 assert(c
< vec
->num_components
);
630 nir_op vec_op
= nir_op_vec(vec
->num_components
);
631 nir_alu_instr
*vec_instr
= nir_alu_instr_create(b
->shader
, vec_op
);
633 for (unsigned i
= 0; i
< vec
->num_components
; i
++) {
635 vec_instr
->src
[i
].src
= nir_src_for_ssa(scalar
);
636 vec_instr
->src
[i
].swizzle
[0] = 0;
638 vec_instr
->src
[i
].src
= nir_src_for_ssa(vec
);
639 vec_instr
->src
[i
].swizzle
[0] = i
;
643 return nir_builder_alu_instr_finish_and_insert(b
, vec_instr
);
646 /** Replaces the component of `vec` specified by `c` with `scalar` */
647 static inline nir_ssa_def
*
648 nir_vector_insert(nir_builder
*b
, nir_ssa_def
*vec
, nir_ssa_def
*scalar
,
651 assert(scalar
->num_components
== 1);
652 assert(c
->num_components
== 1);
654 nir_src c_src
= nir_src_for_ssa(c
);
655 if (nir_src_is_const(c_src
)) {
656 uint64_t c_const
= nir_src_as_uint(c_src
);
657 if (c_const
< vec
->num_components
)
658 return nir_vector_insert_imm(b
, vec
, scalar
, c_const
);
662 nir_const_value per_comp_idx_const
[NIR_MAX_VEC_COMPONENTS
];
663 for (unsigned i
= 0; i
< NIR_MAX_VEC_COMPONENTS
; i
++)
664 per_comp_idx_const
[i
] = nir_const_value_for_int(i
, c
->bit_size
);
665 nir_ssa_def
*per_comp_idx
=
666 nir_build_imm(b
, vec
->num_components
,
667 c
->bit_size
, per_comp_idx_const
);
669 /* nir_builder will automatically splat out scalars to vectors so an
670 * insert is as simple as "if I'm the channel, replace me with the
673 return nir_bcsel(b
, nir_ieq(b
, c
, per_comp_idx
), scalar
, vec
);
677 static inline nir_ssa_def
*
678 nir_i2i(nir_builder
*build
, nir_ssa_def
*x
, unsigned dest_bit_size
)
680 if (x
->bit_size
== dest_bit_size
)
683 switch (dest_bit_size
) {
684 case 64: return nir_i2i64(build
, x
);
685 case 32: return nir_i2i32(build
, x
);
686 case 16: return nir_i2i16(build
, x
);
687 case 8: return nir_i2i8(build
, x
);
688 default: unreachable("Invalid bit size");
692 static inline nir_ssa_def
*
693 nir_u2u(nir_builder
*build
, nir_ssa_def
*x
, unsigned dest_bit_size
)
695 if (x
->bit_size
== dest_bit_size
)
698 switch (dest_bit_size
) {
699 case 64: return nir_u2u64(build
, x
);
700 case 32: return nir_u2u32(build
, x
);
701 case 16: return nir_u2u16(build
, x
);
702 case 8: return nir_u2u8(build
, x
);
703 default: unreachable("Invalid bit size");
707 static inline nir_ssa_def
*
708 nir_iadd_imm(nir_builder
*build
, nir_ssa_def
*x
, uint64_t y
)
710 assert(x
->bit_size
<= 64);
711 if (x
->bit_size
< 64)
712 y
&= (1ull << x
->bit_size
) - 1;
717 return nir_iadd(build
, x
, nir_imm_intN_t(build
, y
, x
->bit_size
));
721 static inline nir_ssa_def
*
722 _nir_mul_imm(nir_builder
*build
, nir_ssa_def
*x
, uint64_t y
, bool amul
)
724 assert(x
->bit_size
<= 64);
725 if (x
->bit_size
< 64)
726 y
&= (1ull << x
->bit_size
) - 1;
729 return nir_imm_intN_t(build
, 0, x
->bit_size
);
732 } else if (!build
->shader
->options
->lower_bitops
&&
733 util_is_power_of_two_or_zero64(y
)) {
734 return nir_ishl(build
, x
, nir_imm_int(build
, ffsll(y
) - 1));
736 return nir_amul(build
, x
, nir_imm_intN_t(build
, y
, x
->bit_size
));
738 return nir_imul(build
, x
, nir_imm_intN_t(build
, y
, x
->bit_size
));
742 static inline nir_ssa_def
*
743 nir_imul_imm(nir_builder
*build
, nir_ssa_def
*x
, uint64_t y
)
745 return _nir_mul_imm(build
, x
, y
, false);
748 static inline nir_ssa_def
*
749 nir_amul_imm(nir_builder
*build
, nir_ssa_def
*x
, uint64_t y
)
751 return _nir_mul_imm(build
, x
, y
, true);
754 static inline nir_ssa_def
*
755 nir_fadd_imm(nir_builder
*build
, nir_ssa_def
*x
, double y
)
757 return nir_fadd(build
, x
, nir_imm_floatN_t(build
, y
, x
->bit_size
));
760 static inline nir_ssa_def
*
761 nir_fmul_imm(nir_builder
*build
, nir_ssa_def
*x
, double y
)
763 return nir_fmul(build
, x
, nir_imm_floatN_t(build
, y
, x
->bit_size
));
766 static inline nir_ssa_def
*
767 nir_pack_bits(nir_builder
*b
, nir_ssa_def
*src
, unsigned dest_bit_size
)
769 assert(src
->num_components
* src
->bit_size
== dest_bit_size
);
771 switch (dest_bit_size
) {
773 switch (src
->bit_size
) {
774 case 32: return nir_pack_64_2x32(b
, src
);
775 case 16: return nir_pack_64_4x16(b
, src
);
781 if (src
->bit_size
== 16)
782 return nir_pack_32_2x16(b
, src
);
789 /* If we got here, we have no dedicated unpack opcode. */
790 nir_ssa_def
*dest
= nir_imm_intN_t(b
, 0, dest_bit_size
);
791 for (unsigned i
= 0; i
< src
->num_components
; i
++) {
792 nir_ssa_def
*val
= nir_u2u(b
, nir_channel(b
, src
, i
), dest_bit_size
);
793 val
= nir_ishl(b
, val
, nir_imm_int(b
, i
* src
->bit_size
));
794 dest
= nir_ior(b
, dest
, val
);
799 static inline nir_ssa_def
*
800 nir_unpack_bits(nir_builder
*b
, nir_ssa_def
*src
, unsigned dest_bit_size
)
802 assert(src
->num_components
== 1);
803 assert(src
->bit_size
> dest_bit_size
);
804 const unsigned dest_num_components
= src
->bit_size
/ dest_bit_size
;
805 assert(dest_num_components
<= NIR_MAX_VEC_COMPONENTS
);
807 switch (src
->bit_size
) {
809 switch (dest_bit_size
) {
810 case 32: return nir_unpack_64_2x32(b
, src
);
811 case 16: return nir_unpack_64_4x16(b
, src
);
817 if (dest_bit_size
== 16)
818 return nir_unpack_32_2x16(b
, src
);
825 /* If we got here, we have no dedicated unpack opcode. */
826 nir_ssa_def
*dest_comps
[NIR_MAX_VEC_COMPONENTS
];
827 for (unsigned i
= 0; i
< dest_num_components
; i
++) {
828 nir_ssa_def
*val
= nir_ushr(b
, src
, nir_imm_int(b
, i
* dest_bit_size
));
829 dest_comps
[i
] = nir_u2u(b
, val
, dest_bit_size
);
831 return nir_vec(b
, dest_comps
, dest_num_components
);
835 * Treats srcs as if it's one big blob of bits and extracts the range of bits
838 * [first_bit, first_bit + dest_num_components * dest_bit_size)
840 * The range can have any alignment or size as long as it's an integer number
841 * of destination components and fits inside the concatenated sources.
843 * TODO: The one caveat here is that we can't handle byte alignment if 64-bit
844 * values are involved because that would require pack/unpack to/from a vec8
845 * which NIR currently does not support.
847 static inline nir_ssa_def
*
848 nir_extract_bits(nir_builder
*b
, nir_ssa_def
**srcs
, unsigned num_srcs
,
850 unsigned dest_num_components
, unsigned dest_bit_size
)
852 const unsigned num_bits
= dest_num_components
* dest_bit_size
;
854 /* Figure out the common bit size */
855 unsigned common_bit_size
= dest_bit_size
;
856 for (unsigned i
= 0; i
< num_srcs
; i
++)
857 common_bit_size
= MIN2(common_bit_size
, srcs
[i
]->bit_size
);
859 common_bit_size
= MIN2(common_bit_size
, (1u << (ffs(first_bit
) - 1)));
861 /* We don't want to have to deal with 1-bit values */
862 assert(common_bit_size
>= 8);
864 nir_ssa_def
*common_comps
[NIR_MAX_VEC_COMPONENTS
* sizeof(uint64_t)];
865 assert(num_bits
/ common_bit_size
<= ARRAY_SIZE(common_comps
));
867 /* First, unpack to the common bit size and select the components from the
871 unsigned src_start_bit
= 0;
872 unsigned src_end_bit
= 0;
873 for (unsigned i
= 0; i
< num_bits
/ common_bit_size
; i
++) {
874 const unsigned bit
= first_bit
+ (i
* common_bit_size
);
875 while (bit
>= src_end_bit
) {
877 assert(src_idx
< (int) num_srcs
);
878 src_start_bit
= src_end_bit
;
879 src_end_bit
+= srcs
[src_idx
]->bit_size
*
880 srcs
[src_idx
]->num_components
;
882 assert(bit
>= src_start_bit
);
883 assert(bit
+ common_bit_size
<= src_end_bit
);
884 const unsigned rel_bit
= bit
- src_start_bit
;
885 const unsigned src_bit_size
= srcs
[src_idx
]->bit_size
;
887 nir_ssa_def
*comp
= nir_channel(b
, srcs
[src_idx
],
888 rel_bit
/ src_bit_size
);
889 if (srcs
[src_idx
]->bit_size
> common_bit_size
) {
890 nir_ssa_def
*unpacked
= nir_unpack_bits(b
, comp
, common_bit_size
);
891 comp
= nir_channel(b
, unpacked
, (rel_bit
% src_bit_size
) /
894 common_comps
[i
] = comp
;
897 /* Now, re-pack the destination if we have to */
898 if (dest_bit_size
> common_bit_size
) {
899 unsigned common_per_dest
= dest_bit_size
/ common_bit_size
;
900 nir_ssa_def
*dest_comps
[NIR_MAX_VEC_COMPONENTS
];
901 for (unsigned i
= 0; i
< dest_num_components
; i
++) {
902 nir_ssa_def
*unpacked
= nir_vec(b
, common_comps
+ i
* common_per_dest
,
904 dest_comps
[i
] = nir_pack_bits(b
, unpacked
, dest_bit_size
);
906 return nir_vec(b
, dest_comps
, dest_num_components
);
908 assert(dest_bit_size
== common_bit_size
);
909 return nir_vec(b
, common_comps
, dest_num_components
);
913 static inline nir_ssa_def
*
914 nir_bitcast_vector(nir_builder
*b
, nir_ssa_def
*src
, unsigned dest_bit_size
)
916 assert((src
->bit_size
* src
->num_components
) % dest_bit_size
== 0);
917 const unsigned dest_num_components
=
918 (src
->bit_size
* src
->num_components
) / dest_bit_size
;
919 assert(dest_num_components
<= NIR_MAX_VEC_COMPONENTS
);
921 return nir_extract_bits(b
, &src
, 1, 0, dest_num_components
, dest_bit_size
);
925 * Turns a nir_src into a nir_ssa_def * so it can be passed to
926 * nir_build_alu()-based builder calls.
928 * See nir_ssa_for_alu_src() for alu instructions.
930 static inline nir_ssa_def
*
931 nir_ssa_for_src(nir_builder
*build
, nir_src src
, int num_components
)
933 if (src
.is_ssa
&& src
.ssa
->num_components
== num_components
)
936 nir_alu_src alu
= { NIR_SRC_INIT
};
938 for (int j
= 0; j
< 4; j
++)
941 return nir_mov_alu(build
, alu
, num_components
);
945 * Similar to nir_ssa_for_src(), but for alu srcs, respecting the
946 * nir_alu_src's swizzle.
948 static inline nir_ssa_def
*
949 nir_ssa_for_alu_src(nir_builder
*build
, nir_alu_instr
*instr
, unsigned srcn
)
951 static uint8_t trivial_swizzle
[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
952 STATIC_ASSERT(ARRAY_SIZE(trivial_swizzle
) == NIR_MAX_VEC_COMPONENTS
);
954 nir_alu_src
*src
= &instr
->src
[srcn
];
955 unsigned num_components
= nir_ssa_alu_instr_src_components(instr
, srcn
);
957 if (src
->src
.is_ssa
&& (src
->src
.ssa
->num_components
== num_components
) &&
958 !src
->abs
&& !src
->negate
&&
959 (memcmp(src
->swizzle
, trivial_swizzle
, num_components
) == 0))
962 return nir_mov_alu(build
, *src
, num_components
);
965 static inline unsigned
966 nir_get_ptr_bitsize(nir_shader
*shader
)
968 if (shader
->info
.stage
== MESA_SHADER_KERNEL
)
969 return shader
->info
.cs
.ptr_size
;
973 static inline nir_deref_instr
*
974 nir_build_deref_var(nir_builder
*build
, nir_variable
*var
)
976 nir_deref_instr
*deref
=
977 nir_deref_instr_create(build
->shader
, nir_deref_type_var
);
979 deref
->mode
= var
->data
.mode
;
980 deref
->type
= var
->type
;
983 nir_ssa_dest_init(&deref
->instr
, &deref
->dest
, 1,
984 nir_get_ptr_bitsize(build
->shader
), NULL
);
986 nir_builder_instr_insert(build
, &deref
->instr
);
991 static inline nir_deref_instr
*
992 nir_build_deref_array(nir_builder
*build
, nir_deref_instr
*parent
,
995 assert(glsl_type_is_array(parent
->type
) ||
996 glsl_type_is_matrix(parent
->type
) ||
997 glsl_type_is_vector(parent
->type
));
999 assert(index
->bit_size
== parent
->dest
.ssa
.bit_size
);
1001 nir_deref_instr
*deref
=
1002 nir_deref_instr_create(build
->shader
, nir_deref_type_array
);
1004 deref
->mode
= parent
->mode
;
1005 deref
->type
= glsl_get_array_element(parent
->type
);
1006 deref
->parent
= nir_src_for_ssa(&parent
->dest
.ssa
);
1007 deref
->arr
.index
= nir_src_for_ssa(index
);
1009 nir_ssa_dest_init(&deref
->instr
, &deref
->dest
,
1010 parent
->dest
.ssa
.num_components
,
1011 parent
->dest
.ssa
.bit_size
, NULL
);
1013 nir_builder_instr_insert(build
, &deref
->instr
);
1018 static inline nir_deref_instr
*
1019 nir_build_deref_array_imm(nir_builder
*build
, nir_deref_instr
*parent
,
1022 assert(parent
->dest
.is_ssa
);
1023 nir_ssa_def
*idx_ssa
= nir_imm_intN_t(build
, index
,
1024 parent
->dest
.ssa
.bit_size
);
1026 return nir_build_deref_array(build
, parent
, idx_ssa
);
1029 static inline nir_deref_instr
*
1030 nir_build_deref_ptr_as_array(nir_builder
*build
, nir_deref_instr
*parent
,
1033 assert(parent
->deref_type
== nir_deref_type_array
||
1034 parent
->deref_type
== nir_deref_type_ptr_as_array
||
1035 parent
->deref_type
== nir_deref_type_cast
);
1037 assert(index
->bit_size
== parent
->dest
.ssa
.bit_size
);
1039 nir_deref_instr
*deref
=
1040 nir_deref_instr_create(build
->shader
, nir_deref_type_ptr_as_array
);
1042 deref
->mode
= parent
->mode
;
1043 deref
->type
= parent
->type
;
1044 deref
->parent
= nir_src_for_ssa(&parent
->dest
.ssa
);
1045 deref
->arr
.index
= nir_src_for_ssa(index
);
1047 nir_ssa_dest_init(&deref
->instr
, &deref
->dest
,
1048 parent
->dest
.ssa
.num_components
,
1049 parent
->dest
.ssa
.bit_size
, NULL
);
1051 nir_builder_instr_insert(build
, &deref
->instr
);
1056 static inline nir_deref_instr
*
1057 nir_build_deref_array_wildcard(nir_builder
*build
, nir_deref_instr
*parent
)
1059 assert(glsl_type_is_array(parent
->type
) ||
1060 glsl_type_is_matrix(parent
->type
));
1062 nir_deref_instr
*deref
=
1063 nir_deref_instr_create(build
->shader
, nir_deref_type_array_wildcard
);
1065 deref
->mode
= parent
->mode
;
1066 deref
->type
= glsl_get_array_element(parent
->type
);
1067 deref
->parent
= nir_src_for_ssa(&parent
->dest
.ssa
);
1069 nir_ssa_dest_init(&deref
->instr
, &deref
->dest
,
1070 parent
->dest
.ssa
.num_components
,
1071 parent
->dest
.ssa
.bit_size
, NULL
);
1073 nir_builder_instr_insert(build
, &deref
->instr
);
1078 static inline nir_deref_instr
*
1079 nir_build_deref_struct(nir_builder
*build
, nir_deref_instr
*parent
,
1082 assert(glsl_type_is_struct_or_ifc(parent
->type
));
1084 nir_deref_instr
*deref
=
1085 nir_deref_instr_create(build
->shader
, nir_deref_type_struct
);
1087 deref
->mode
= parent
->mode
;
1088 deref
->type
= glsl_get_struct_field(parent
->type
, index
);
1089 deref
->parent
= nir_src_for_ssa(&parent
->dest
.ssa
);
1090 deref
->strct
.index
= index
;
1092 nir_ssa_dest_init(&deref
->instr
, &deref
->dest
,
1093 parent
->dest
.ssa
.num_components
,
1094 parent
->dest
.ssa
.bit_size
, NULL
);
1096 nir_builder_instr_insert(build
, &deref
->instr
);
1101 static inline nir_deref_instr
*
1102 nir_build_deref_cast(nir_builder
*build
, nir_ssa_def
*parent
,
1103 nir_variable_mode mode
, const struct glsl_type
*type
,
1104 unsigned ptr_stride
)
1106 nir_deref_instr
*deref
=
1107 nir_deref_instr_create(build
->shader
, nir_deref_type_cast
);
1111 deref
->parent
= nir_src_for_ssa(parent
);
1112 deref
->cast
.ptr_stride
= ptr_stride
;
1114 nir_ssa_dest_init(&deref
->instr
, &deref
->dest
,
1115 parent
->num_components
, parent
->bit_size
, NULL
);
1117 nir_builder_instr_insert(build
, &deref
->instr
);
1122 /** Returns a deref that follows another but starting from the given parent
1124 * The new deref will be the same type and take the same array or struct index
1125 * as the leader deref but it may have a different parent. This is very
1126 * useful for walking deref paths.
1128 static inline nir_deref_instr
*
1129 nir_build_deref_follower(nir_builder
*b
, nir_deref_instr
*parent
,
1130 nir_deref_instr
*leader
)
1132 /* If the derefs would have the same parent, don't make a new one */
1133 assert(leader
->parent
.is_ssa
);
1134 if (leader
->parent
.ssa
== &parent
->dest
.ssa
)
1137 UNUSED nir_deref_instr
*leader_parent
= nir_src_as_deref(leader
->parent
);
1139 switch (leader
->deref_type
) {
1140 case nir_deref_type_var
:
1141 unreachable("A var dereference cannot have a parent");
1144 case nir_deref_type_array
:
1145 case nir_deref_type_array_wildcard
:
1146 assert(glsl_type_is_matrix(parent
->type
) ||
1147 glsl_type_is_array(parent
->type
) ||
1148 (leader
->deref_type
== nir_deref_type_array
&&
1149 glsl_type_is_vector(parent
->type
)));
1150 assert(glsl_get_length(parent
->type
) ==
1151 glsl_get_length(leader_parent
->type
));
1153 if (leader
->deref_type
== nir_deref_type_array
) {
1154 assert(leader
->arr
.index
.is_ssa
);
1155 nir_ssa_def
*index
= nir_i2i(b
, leader
->arr
.index
.ssa
,
1156 parent
->dest
.ssa
.bit_size
);
1157 return nir_build_deref_array(b
, parent
, index
);
1159 return nir_build_deref_array_wildcard(b
, parent
);
1162 case nir_deref_type_struct
:
1163 assert(glsl_type_is_struct_or_ifc(parent
->type
));
1164 assert(glsl_get_length(parent
->type
) ==
1165 glsl_get_length(leader_parent
->type
));
1167 return nir_build_deref_struct(b
, parent
, leader
->strct
.index
);
1170 unreachable("Invalid deref instruction type");
1174 static inline nir_ssa_def
*
1175 nir_load_reg(nir_builder
*build
, nir_register
*reg
)
1177 return nir_ssa_for_src(build
, nir_src_for_reg(reg
), reg
->num_components
);
1181 nir_store_reg(nir_builder
*build
, nir_register
*reg
,
1182 nir_ssa_def
*def
, nir_component_mask_t write_mask
)
1184 assert(reg
->num_components
== def
->num_components
);
1185 assert(reg
->bit_size
== def
->bit_size
);
1187 nir_alu_instr
*mov
= nir_alu_instr_create(build
->shader
, nir_op_mov
);
1188 mov
->src
[0].src
= nir_src_for_ssa(def
);
1189 mov
->dest
.dest
= nir_dest_for_reg(reg
);
1190 mov
->dest
.write_mask
= write_mask
& BITFIELD_MASK(reg
->num_components
);
1191 nir_builder_instr_insert(build
, &mov
->instr
);
1194 static inline nir_ssa_def
*
1195 nir_load_deref_with_access(nir_builder
*build
, nir_deref_instr
*deref
,
1196 enum gl_access_qualifier access
)
1198 nir_intrinsic_instr
*load
=
1199 nir_intrinsic_instr_create(build
->shader
, nir_intrinsic_load_deref
);
1200 load
->num_components
= glsl_get_vector_elements(deref
->type
);
1201 load
->src
[0] = nir_src_for_ssa(&deref
->dest
.ssa
);
1202 nir_ssa_dest_init(&load
->instr
, &load
->dest
, load
->num_components
,
1203 glsl_get_bit_size(deref
->type
), NULL
);
1204 nir_intrinsic_set_access(load
, access
);
1205 nir_builder_instr_insert(build
, &load
->instr
);
1206 return &load
->dest
.ssa
;
1209 static inline nir_ssa_def
*
1210 nir_load_deref(nir_builder
*build
, nir_deref_instr
*deref
)
1212 return nir_load_deref_with_access(build
, deref
, (enum gl_access_qualifier
)0);
1216 nir_store_deref_with_access(nir_builder
*build
, nir_deref_instr
*deref
,
1217 nir_ssa_def
*value
, unsigned writemask
,
1218 enum gl_access_qualifier access
)
1220 nir_intrinsic_instr
*store
=
1221 nir_intrinsic_instr_create(build
->shader
, nir_intrinsic_store_deref
);
1222 store
->num_components
= glsl_get_vector_elements(deref
->type
);
1223 store
->src
[0] = nir_src_for_ssa(&deref
->dest
.ssa
);
1224 store
->src
[1] = nir_src_for_ssa(value
);
1225 nir_intrinsic_set_write_mask(store
,
1226 writemask
& ((1 << store
->num_components
) - 1));
1227 nir_intrinsic_set_access(store
, access
);
1228 nir_builder_instr_insert(build
, &store
->instr
);
1232 nir_store_deref(nir_builder
*build
, nir_deref_instr
*deref
,
1233 nir_ssa_def
*value
, unsigned writemask
)
1235 nir_store_deref_with_access(build
, deref
, value
, writemask
,
1236 (enum gl_access_qualifier
)0);
1240 nir_copy_deref_with_access(nir_builder
*build
, nir_deref_instr
*dest
,
1241 nir_deref_instr
*src
,
1242 enum gl_access_qualifier dest_access
,
1243 enum gl_access_qualifier src_access
)
1245 nir_intrinsic_instr
*copy
=
1246 nir_intrinsic_instr_create(build
->shader
, nir_intrinsic_copy_deref
);
1247 copy
->src
[0] = nir_src_for_ssa(&dest
->dest
.ssa
);
1248 copy
->src
[1] = nir_src_for_ssa(&src
->dest
.ssa
);
1249 nir_intrinsic_set_dst_access(copy
, dest_access
);
1250 nir_intrinsic_set_src_access(copy
, src_access
);
1251 nir_builder_instr_insert(build
, ©
->instr
);
1255 nir_copy_deref(nir_builder
*build
, nir_deref_instr
*dest
, nir_deref_instr
*src
)
1257 nir_copy_deref_with_access(build
, dest
, src
,
1258 (enum gl_access_qualifier
) 0,
1259 (enum gl_access_qualifier
) 0);
1262 static inline nir_ssa_def
*
1263 nir_load_var(nir_builder
*build
, nir_variable
*var
)
1265 return nir_load_deref(build
, nir_build_deref_var(build
, var
));
1269 nir_store_var(nir_builder
*build
, nir_variable
*var
, nir_ssa_def
*value
,
1272 nir_store_deref(build
, nir_build_deref_var(build
, var
), value
, writemask
);
1276 nir_copy_var(nir_builder
*build
, nir_variable
*dest
, nir_variable
*src
)
1278 nir_copy_deref(build
, nir_build_deref_var(build
, dest
),
1279 nir_build_deref_var(build
, src
));
1282 static inline nir_ssa_def
*
1283 nir_load_param(nir_builder
*build
, uint32_t param_idx
)
1285 assert(param_idx
< build
->impl
->function
->num_params
);
1286 nir_parameter
*param
= &build
->impl
->function
->params
[param_idx
];
1288 nir_intrinsic_instr
*load
=
1289 nir_intrinsic_instr_create(build
->shader
, nir_intrinsic_load_param
);
1290 nir_intrinsic_set_param_idx(load
, param_idx
);
1291 load
->num_components
= param
->num_components
;
1292 nir_ssa_dest_init(&load
->instr
, &load
->dest
,
1293 param
->num_components
, param
->bit_size
, NULL
);
1294 nir_builder_instr_insert(build
, &load
->instr
);
1295 return &load
->dest
.ssa
;
1298 #include "nir_builder_opcodes.h"
1300 static inline nir_ssa_def
*
1301 nir_f2b(nir_builder
*build
, nir_ssa_def
*f
)
1303 return nir_f2b1(build
, f
);
1306 static inline nir_ssa_def
*
1307 nir_i2b(nir_builder
*build
, nir_ssa_def
*i
)
1309 return nir_i2b1(build
, i
);
1312 static inline nir_ssa_def
*
1313 nir_b2f(nir_builder
*build
, nir_ssa_def
*b
, uint32_t bit_size
)
1316 case 64: return nir_b2f64(build
, b
);
1317 case 32: return nir_b2f32(build
, b
);
1318 case 16: return nir_b2f16(build
, b
);
1320 unreachable("Invalid bit-size");
1324 static inline nir_ssa_def
*
1325 nir_b2i(nir_builder
*build
, nir_ssa_def
*b
, uint32_t bit_size
)
1328 case 64: return nir_b2i64(build
, b
);
1329 case 32: return nir_b2i32(build
, b
);
1330 case 16: return nir_b2i16(build
, b
);
1331 case 8: return nir_b2i8(build
, b
);
1333 unreachable("Invalid bit-size");
1336 static inline nir_ssa_def
*
1337 nir_load_barycentric(nir_builder
*build
, nir_intrinsic_op op
,
1338 unsigned interp_mode
)
1340 unsigned num_components
= op
== nir_intrinsic_load_barycentric_model
? 3 : 2;
1341 nir_intrinsic_instr
*bary
= nir_intrinsic_instr_create(build
->shader
, op
);
1342 nir_ssa_dest_init(&bary
->instr
, &bary
->dest
, num_components
, 32, NULL
);
1343 nir_intrinsic_set_interp_mode(bary
, interp_mode
);
1344 nir_builder_instr_insert(build
, &bary
->instr
);
1345 return &bary
->dest
.ssa
;
1349 nir_jump(nir_builder
*build
, nir_jump_type jump_type
)
1351 assert(jump_type
!= nir_jump_goto
&& jump_type
!= nir_jump_goto_if
);
1352 nir_jump_instr
*jump
= nir_jump_instr_create(build
->shader
, jump_type
);
1353 nir_builder_instr_insert(build
, &jump
->instr
);
1357 nir_goto(nir_builder
*build
, struct nir_block
*target
)
1359 assert(!build
->impl
->structured
);
1360 nir_jump_instr
*jump
= nir_jump_instr_create(build
->shader
, nir_jump_goto
);
1361 jump
->target
= target
;
1362 nir_builder_instr_insert(build
, &jump
->instr
);
1366 nir_goto_if(nir_builder
*build
, struct nir_block
*target
, nir_src cond
,
1367 struct nir_block
*else_target
)
1369 assert(!build
->impl
->structured
);
1370 nir_jump_instr
*jump
= nir_jump_instr_create(build
->shader
, nir_jump_goto_if
);
1371 jump
->condition
= cond
;
1372 jump
->target
= target
;
1373 jump
->else_target
= else_target
;
1374 nir_builder_instr_insert(build
, &jump
->instr
);
1377 static inline nir_ssa_def
*
1378 nir_compare_func(nir_builder
*b
, enum compare_func func
,
1379 nir_ssa_def
*src0
, nir_ssa_def
*src1
)
1382 case COMPARE_FUNC_NEVER
:
1383 return nir_imm_int(b
, 0);
1384 case COMPARE_FUNC_ALWAYS
:
1385 return nir_imm_int(b
, ~0);
1386 case COMPARE_FUNC_EQUAL
:
1387 return nir_feq(b
, src0
, src1
);
1388 case COMPARE_FUNC_NOTEQUAL
:
1389 return nir_fne(b
, src0
, src1
);
1390 case COMPARE_FUNC_GREATER
:
1391 return nir_flt(b
, src1
, src0
);
1392 case COMPARE_FUNC_GEQUAL
:
1393 return nir_fge(b
, src0
, src1
);
1394 case COMPARE_FUNC_LESS
:
1395 return nir_flt(b
, src0
, src1
);
1396 case COMPARE_FUNC_LEQUAL
:
1397 return nir_fge(b
, src1
, src0
);
1399 unreachable("bad compare func");
1403 nir_scoped_barrier(nir_builder
*b
,
1404 nir_scope exec_scope
,
1405 nir_scope mem_scope
,
1406 nir_memory_semantics mem_semantics
,
1407 nir_variable_mode mem_modes
)
1409 nir_intrinsic_instr
*intrin
=
1410 nir_intrinsic_instr_create(b
->shader
, nir_intrinsic_scoped_barrier
);
1411 nir_intrinsic_set_execution_scope(intrin
, exec_scope
);
1412 nir_intrinsic_set_memory_scope(intrin
, mem_scope
);
1413 nir_intrinsic_set_memory_semantics(intrin
, mem_semantics
);
1414 nir_intrinsic_set_memory_modes(intrin
, mem_modes
);
1415 nir_builder_instr_insert(b
, &intrin
->instr
);
1419 nir_scoped_memory_barrier(nir_builder
*b
,
1421 nir_memory_semantics semantics
,
1422 nir_variable_mode modes
)
1424 nir_scoped_barrier(b
, NIR_SCOPE_NONE
, scope
, semantics
, modes
);
1427 static inline nir_ssa_def
*
1428 nir_convert_to_bit_size(nir_builder
*b
,
1433 nir_alu_type base_type
= nir_alu_type_get_base_type(type
);
1434 nir_alu_type dst_type
= (nir_alu_type
)(bit_size
| base_type
);
1437 nir_type_conversion_op(type
, dst_type
, nir_rounding_mode_undef
);
1439 return nir_build_alu(b
, opcode
, src
, NULL
, NULL
, NULL
);
1442 static inline nir_ssa_def
*
1443 nir_i2iN(nir_builder
*b
, nir_ssa_def
*src
, unsigned bit_size
)
1445 return nir_convert_to_bit_size(b
, src
, nir_type_int
, bit_size
);
1448 static inline nir_ssa_def
*
1449 nir_u2uN(nir_builder
*b
, nir_ssa_def
*src
, unsigned bit_size
)
1451 return nir_convert_to_bit_size(b
, src
, nir_type_uint
, bit_size
);
1454 static inline nir_ssa_def
*
1455 nir_b2bN(nir_builder
*b
, nir_ssa_def
*src
, unsigned bit_size
)
1457 return nir_convert_to_bit_size(b
, src
, nir_type_bool
, bit_size
);
1460 static inline nir_ssa_def
*
1461 nir_f2fN(nir_builder
*b
, nir_ssa_def
*src
, unsigned bit_size
)
1463 return nir_convert_to_bit_size(b
, src
, nir_type_float
, bit_size
);
1466 #endif /* NIR_BUILDER_H */