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/half_float.h"
32 typedef struct nir_builder
{
35 /* Whether new ALU instructions will be marked "exact" */
39 nir_function_impl
*impl
;
43 nir_builder_init(nir_builder
*build
, nir_function_impl
*impl
)
45 memset(build
, 0, sizeof(*build
));
48 build
->shader
= impl
->function
->shader
;
52 nir_builder_init_simple_shader(nir_builder
*build
, void *mem_ctx
,
53 gl_shader_stage stage
,
54 const nir_shader_compiler_options
*options
)
56 build
->shader
= nir_shader_create(mem_ctx
, stage
, options
, NULL
);
57 nir_function
*func
= nir_function_create(build
->shader
, "main");
59 build
->impl
= nir_function_impl_create(func
);
60 build
->cursor
= nir_after_cf_list(&build
->impl
->body
);
64 nir_builder_instr_insert(nir_builder
*build
, nir_instr
*instr
)
66 nir_instr_insert(build
->cursor
, instr
);
68 /* Move the cursor forward. */
69 build
->cursor
= nir_after_instr(instr
);
72 static inline nir_instr
*
73 nir_builder_last_instr(nir_builder
*build
)
75 assert(build
->cursor
.option
== nir_cursor_after_instr
);
76 return build
->cursor
.instr
;
80 nir_builder_cf_insert(nir_builder
*build
, nir_cf_node
*cf
)
82 nir_cf_node_insert(build
->cursor
, cf
);
86 nir_builder_is_inside_cf(nir_builder
*build
, nir_cf_node
*cf_node
)
88 nir_block
*block
= nir_cursor_current_block(build
->cursor
);
89 for (nir_cf_node
*n
= &block
->cf_node
; n
; n
= n
->parent
) {
96 static inline nir_if
*
97 nir_push_if(nir_builder
*build
, nir_ssa_def
*condition
)
99 nir_if
*nif
= nir_if_create(build
->shader
);
100 nif
->condition
= nir_src_for_ssa(condition
);
101 nir_builder_cf_insert(build
, &nif
->cf_node
);
102 build
->cursor
= nir_before_cf_list(&nif
->then_list
);
106 static inline nir_if
*
107 nir_push_else(nir_builder
*build
, nir_if
*nif
)
110 assert(nir_builder_is_inside_cf(build
, &nif
->cf_node
));
112 nir_block
*block
= nir_cursor_current_block(build
->cursor
);
113 nif
= nir_cf_node_as_if(block
->cf_node
.parent
);
115 build
->cursor
= nir_before_cf_list(&nif
->else_list
);
120 nir_pop_if(nir_builder
*build
, nir_if
*nif
)
123 assert(nir_builder_is_inside_cf(build
, &nif
->cf_node
));
125 nir_block
*block
= nir_cursor_current_block(build
->cursor
);
126 nif
= nir_cf_node_as_if(block
->cf_node
.parent
);
128 build
->cursor
= nir_after_cf_node(&nif
->cf_node
);
131 static inline nir_ssa_def
*
132 nir_if_phi(nir_builder
*build
, nir_ssa_def
*then_def
, nir_ssa_def
*else_def
)
134 nir_block
*block
= nir_cursor_current_block(build
->cursor
);
135 nir_if
*nif
= nir_cf_node_as_if(nir_cf_node_prev(&block
->cf_node
));
137 nir_phi_instr
*phi
= nir_phi_instr_create(build
->shader
);
139 nir_phi_src
*src
= ralloc(phi
, nir_phi_src
);
140 src
->pred
= nir_if_last_then_block(nif
);
141 src
->src
= nir_src_for_ssa(then_def
);
142 exec_list_push_tail(&phi
->srcs
, &src
->node
);
144 src
= ralloc(phi
, nir_phi_src
);
145 src
->pred
= nir_if_last_else_block(nif
);
146 src
->src
= nir_src_for_ssa(else_def
);
147 exec_list_push_tail(&phi
->srcs
, &src
->node
);
149 assert(then_def
->num_components
== else_def
->num_components
);
150 assert(then_def
->bit_size
== else_def
->bit_size
);
151 nir_ssa_dest_init(&phi
->instr
, &phi
->dest
,
152 then_def
->num_components
, then_def
->bit_size
, NULL
);
154 nir_builder_instr_insert(build
, &phi
->instr
);
156 return &phi
->dest
.ssa
;
159 static inline nir_loop
*
160 nir_push_loop(nir_builder
*build
)
162 nir_loop
*loop
= nir_loop_create(build
->shader
);
163 nir_builder_cf_insert(build
, &loop
->cf_node
);
164 build
->cursor
= nir_before_cf_list(&loop
->body
);
169 nir_pop_loop(nir_builder
*build
, nir_loop
*loop
)
172 assert(nir_builder_is_inside_cf(build
, &loop
->cf_node
));
174 nir_block
*block
= nir_cursor_current_block(build
->cursor
);
175 loop
= nir_cf_node_as_loop(block
->cf_node
.parent
);
177 build
->cursor
= nir_after_cf_node(&loop
->cf_node
);
180 static inline nir_ssa_def
*
181 nir_ssa_undef(nir_builder
*build
, unsigned num_components
, unsigned bit_size
)
183 nir_ssa_undef_instr
*undef
=
184 nir_ssa_undef_instr_create(build
->shader
, num_components
, bit_size
);
188 nir_instr_insert(nir_before_cf_list(&build
->impl
->body
), &undef
->instr
);
193 static inline nir_ssa_def
*
194 nir_build_imm(nir_builder
*build
, unsigned num_components
,
195 unsigned bit_size
, nir_const_value value
)
197 nir_load_const_instr
*load_const
=
198 nir_load_const_instr_create(build
->shader
, num_components
, bit_size
);
202 load_const
->value
= value
;
204 nir_builder_instr_insert(build
, &load_const
->instr
);
206 return &load_const
->def
;
209 static inline nir_ssa_def
*
210 nir_imm_bool(nir_builder
*build
, bool x
)
214 memset(&v
, 0, sizeof(v
));
215 v
.u32
[0] = x
? NIR_TRUE
: NIR_FALSE
;
217 return nir_build_imm(build
, 1, 32, v
);
220 static inline nir_ssa_def
*
221 nir_imm_true(nir_builder
*build
)
223 return nir_imm_bool(build
, true);
226 static inline nir_ssa_def
*
227 nir_imm_false(nir_builder
*build
)
229 return nir_imm_bool(build
, false);
232 static inline nir_ssa_def
*
233 nir_imm_float16(nir_builder
*build
, float x
)
237 memset(&v
, 0, sizeof(v
));
238 v
.u16
[0] = _mesa_float_to_half(x
);
240 return nir_build_imm(build
, 1, 16, v
);
243 static inline nir_ssa_def
*
244 nir_imm_float(nir_builder
*build
, float x
)
248 memset(&v
, 0, sizeof(v
));
251 return nir_build_imm(build
, 1, 32, v
);
254 static inline nir_ssa_def
*
255 nir_imm_double(nir_builder
*build
, double x
)
259 memset(&v
, 0, sizeof(v
));
262 return nir_build_imm(build
, 1, 64, v
);
265 static inline nir_ssa_def
*
266 nir_imm_floatN_t(nir_builder
*build
, double x
, unsigned bit_size
)
270 return nir_imm_float16(build
, x
);
272 return nir_imm_float(build
, x
);
274 return nir_imm_double(build
, x
);
277 unreachable("unknown float immediate bit size");
280 static inline nir_ssa_def
*
281 nir_imm_vec4(nir_builder
*build
, float x
, float y
, float z
, float w
)
285 memset(&v
, 0, sizeof(v
));
291 return nir_build_imm(build
, 4, 32, v
);
294 static inline nir_ssa_def
*
295 nir_imm_ivec2(nir_builder
*build
, int x
, int y
)
299 memset(&v
, 0, sizeof(v
));
303 return nir_build_imm(build
, 2, 32, v
);
306 static inline nir_ssa_def
*
307 nir_imm_int(nir_builder
*build
, int x
)
311 memset(&v
, 0, sizeof(v
));
314 return nir_build_imm(build
, 1, 32, v
);
317 static inline nir_ssa_def
*
318 nir_imm_int64(nir_builder
*build
, int64_t x
)
322 memset(&v
, 0, sizeof(v
));
325 return nir_build_imm(build
, 1, 64, v
);
328 static inline nir_ssa_def
*
329 nir_imm_intN_t(nir_builder
*build
, uint64_t x
, unsigned bit_size
)
333 memset(&v
, 0, sizeof(v
));
334 assert(bit_size
<= 64);
335 v
.i64
[0] = x
& (~0ull >> (64 - bit_size
));
337 return nir_build_imm(build
, 1, bit_size
, v
);
340 static inline nir_ssa_def
*
341 nir_imm_ivec4(nir_builder
*build
, int x
, int y
, int z
, int w
)
345 memset(&v
, 0, sizeof(v
));
351 return nir_build_imm(build
, 4, 32, v
);
354 static inline nir_ssa_def
*
355 nir_build_alu(nir_builder
*build
, nir_op op
, nir_ssa_def
*src0
,
356 nir_ssa_def
*src1
, nir_ssa_def
*src2
, nir_ssa_def
*src3
)
358 const nir_op_info
*op_info
= &nir_op_infos
[op
];
359 nir_alu_instr
*instr
= nir_alu_instr_create(build
->shader
, op
);
363 instr
->exact
= build
->exact
;
365 instr
->src
[0].src
= nir_src_for_ssa(src0
);
367 instr
->src
[1].src
= nir_src_for_ssa(src1
);
369 instr
->src
[2].src
= nir_src_for_ssa(src2
);
371 instr
->src
[3].src
= nir_src_for_ssa(src3
);
373 /* Guess the number of components the destination temporary should have
374 * based on our input sizes, if it's not fixed for the op.
376 unsigned num_components
= op_info
->output_size
;
377 if (num_components
== 0) {
378 for (unsigned i
= 0; i
< op_info
->num_inputs
; i
++) {
379 if (op_info
->input_sizes
[i
] == 0)
380 num_components
= MAX2(num_components
,
381 instr
->src
[i
].src
.ssa
->num_components
);
384 assert(num_components
!= 0);
386 /* Figure out the bitwidth based on the source bitwidth if the instruction
389 unsigned bit_size
= nir_alu_type_get_type_size(op_info
->output_type
);
391 for (unsigned i
= 0; i
< op_info
->num_inputs
; i
++) {
392 unsigned src_bit_size
= instr
->src
[i
].src
.ssa
->bit_size
;
393 if (nir_alu_type_get_type_size(op_info
->input_types
[i
]) == 0) {
395 assert(src_bit_size
== bit_size
);
397 bit_size
= src_bit_size
;
399 assert(src_bit_size
==
400 nir_alu_type_get_type_size(op_info
->input_types
[i
]));
405 /* When in doubt, assume 32. */
409 /* Make sure we don't swizzle from outside of our source vector (like if a
410 * scalar value was passed into a multiply with a vector).
412 for (unsigned i
= 0; i
< op_info
->num_inputs
; i
++) {
413 for (unsigned j
= instr
->src
[i
].src
.ssa
->num_components
;
414 j
< NIR_MAX_VEC_COMPONENTS
; j
++) {
415 instr
->src
[i
].swizzle
[j
] = instr
->src
[i
].src
.ssa
->num_components
- 1;
419 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
.dest
, num_components
,
421 instr
->dest
.write_mask
= (1 << num_components
) - 1;
423 nir_builder_instr_insert(build
, &instr
->instr
);
425 return &instr
->dest
.dest
.ssa
;
428 #include "nir_builder_opcodes.h"
430 static inline nir_ssa_def
*
431 nir_vec(nir_builder
*build
, nir_ssa_def
**comp
, unsigned num_components
)
433 switch (num_components
) {
435 return nir_vec4(build
, comp
[0], comp
[1], comp
[2], comp
[3]);
437 return nir_vec3(build
, comp
[0], comp
[1], comp
[2]);
439 return nir_vec2(build
, comp
[0], comp
[1]);
443 unreachable("bad component count");
449 * Similar to nir_fmov, but takes a nir_alu_src instead of a nir_ssa_def.
451 static inline nir_ssa_def
*
452 nir_fmov_alu(nir_builder
*build
, nir_alu_src src
, unsigned num_components
)
454 nir_alu_instr
*mov
= nir_alu_instr_create(build
->shader
, nir_op_fmov
);
455 nir_ssa_dest_init(&mov
->instr
, &mov
->dest
.dest
, num_components
,
456 nir_src_bit_size(src
.src
), NULL
);
457 mov
->exact
= build
->exact
;
458 mov
->dest
.write_mask
= (1 << num_components
) - 1;
460 nir_builder_instr_insert(build
, &mov
->instr
);
462 return &mov
->dest
.dest
.ssa
;
465 static inline nir_ssa_def
*
466 nir_imov_alu(nir_builder
*build
, nir_alu_src src
, unsigned num_components
)
468 nir_alu_instr
*mov
= nir_alu_instr_create(build
->shader
, nir_op_imov
);
469 nir_ssa_dest_init(&mov
->instr
, &mov
->dest
.dest
, num_components
,
470 nir_src_bit_size(src
.src
), NULL
);
471 mov
->exact
= build
->exact
;
472 mov
->dest
.write_mask
= (1 << num_components
) - 1;
474 nir_builder_instr_insert(build
, &mov
->instr
);
476 return &mov
->dest
.dest
.ssa
;
480 * Construct an fmov or imov that reswizzles the source's components.
482 static inline nir_ssa_def
*
483 nir_swizzle(nir_builder
*build
, nir_ssa_def
*src
, const unsigned *swiz
,
484 unsigned num_components
, bool use_fmov
)
486 assert(num_components
<= NIR_MAX_VEC_COMPONENTS
);
487 nir_alu_src alu_src
= { NIR_SRC_INIT
};
488 alu_src
.src
= nir_src_for_ssa(src
);
489 for (unsigned i
= 0; i
< num_components
&& i
< NIR_MAX_VEC_COMPONENTS
; i
++)
490 alu_src
.swizzle
[i
] = swiz
[i
];
492 return use_fmov
? nir_fmov_alu(build
, alu_src
, num_components
) :
493 nir_imov_alu(build
, alu_src
, num_components
);
496 /* Selects the right fdot given the number of components in each source. */
497 static inline nir_ssa_def
*
498 nir_fdot(nir_builder
*build
, nir_ssa_def
*src0
, nir_ssa_def
*src1
)
500 assert(src0
->num_components
== src1
->num_components
);
501 switch (src0
->num_components
) {
502 case 1: return nir_fmul(build
, src0
, src1
);
503 case 2: return nir_fdot2(build
, src0
, src1
);
504 case 3: return nir_fdot3(build
, src0
, src1
);
505 case 4: return nir_fdot4(build
, src0
, src1
);
507 unreachable("bad component size");
513 static inline nir_ssa_def
*
514 nir_bany_inequal(nir_builder
*b
, nir_ssa_def
*src0
, nir_ssa_def
*src1
)
516 switch (src0
->num_components
) {
517 case 1: return nir_ine(b
, src0
, src1
);
518 case 2: return nir_bany_inequal2(b
, src0
, src1
);
519 case 3: return nir_bany_inequal3(b
, src0
, src1
);
520 case 4: return nir_bany_inequal4(b
, src0
, src1
);
522 unreachable("bad component size");
526 static inline nir_ssa_def
*
527 nir_bany(nir_builder
*b
, nir_ssa_def
*src
)
529 return nir_bany_inequal(b
, src
, nir_imm_false(b
));
532 static inline nir_ssa_def
*
533 nir_channel(nir_builder
*b
, nir_ssa_def
*def
, unsigned c
)
535 return nir_swizzle(b
, def
, &c
, 1, false);
538 static inline nir_ssa_def
*
539 nir_channels(nir_builder
*b
, nir_ssa_def
*def
, nir_component_mask_t mask
)
541 unsigned num_channels
= 0, swizzle
[NIR_MAX_VEC_COMPONENTS
] = { 0 };
543 for (unsigned i
= 0; i
< NIR_MAX_VEC_COMPONENTS
; i
++) {
544 if ((mask
& (1 << i
)) == 0)
546 swizzle
[num_channels
++] = i
;
549 return nir_swizzle(b
, def
, swizzle
, num_channels
, false);
553 * Turns a nir_src into a nir_ssa_def * so it can be passed to
554 * nir_build_alu()-based builder calls.
556 * See nir_ssa_for_alu_src() for alu instructions.
558 static inline nir_ssa_def
*
559 nir_ssa_for_src(nir_builder
*build
, nir_src src
, int num_components
)
561 if (src
.is_ssa
&& src
.ssa
->num_components
== num_components
)
564 nir_alu_src alu
= { NIR_SRC_INIT
};
566 for (int j
= 0; j
< 4; j
++)
569 return nir_imov_alu(build
, alu
, num_components
);
573 * Similar to nir_ssa_for_src(), but for alu srcs, respecting the
574 * nir_alu_src's swizzle.
576 static inline nir_ssa_def
*
577 nir_ssa_for_alu_src(nir_builder
*build
, nir_alu_instr
*instr
, unsigned srcn
)
579 static uint8_t trivial_swizzle
[NIR_MAX_VEC_COMPONENTS
];
580 for (int i
= 0; i
< NIR_MAX_VEC_COMPONENTS
; ++i
)
581 trivial_swizzle
[i
] = i
;
582 nir_alu_src
*src
= &instr
->src
[srcn
];
583 unsigned num_components
= nir_ssa_alu_instr_src_components(instr
, srcn
);
585 if (src
->src
.is_ssa
&& (src
->src
.ssa
->num_components
== num_components
) &&
586 !src
->abs
&& !src
->negate
&&
587 (memcmp(src
->swizzle
, trivial_swizzle
, num_components
) == 0))
590 return nir_imov_alu(build
, *src
, num_components
);
593 static inline nir_deref_instr
*
594 nir_build_deref_var(nir_builder
*build
, nir_variable
*var
)
596 nir_deref_instr
*deref
=
597 nir_deref_instr_create(build
->shader
, nir_deref_type_var
);
599 deref
->mode
= var
->data
.mode
;
600 deref
->type
= var
->type
;
603 nir_ssa_dest_init(&deref
->instr
, &deref
->dest
, 1, 32, NULL
);
605 nir_builder_instr_insert(build
, &deref
->instr
);
610 static inline nir_deref_instr
*
611 nir_build_deref_array(nir_builder
*build
, nir_deref_instr
*parent
,
614 assert(glsl_type_is_array(parent
->type
) ||
615 glsl_type_is_matrix(parent
->type
) ||
616 glsl_type_is_vector(parent
->type
));
618 nir_deref_instr
*deref
=
619 nir_deref_instr_create(build
->shader
, nir_deref_type_array
);
621 deref
->mode
= parent
->mode
;
622 deref
->type
= glsl_get_array_element(parent
->type
);
623 deref
->parent
= nir_src_for_ssa(&parent
->dest
.ssa
);
624 deref
->arr
.index
= nir_src_for_ssa(index
);
626 nir_ssa_dest_init(&deref
->instr
, &deref
->dest
,
627 parent
->dest
.ssa
.num_components
,
628 parent
->dest
.ssa
.bit_size
, NULL
);
630 nir_builder_instr_insert(build
, &deref
->instr
);
635 static inline nir_deref_instr
*
636 nir_build_deref_array_wildcard(nir_builder
*build
, nir_deref_instr
*parent
)
638 assert(glsl_type_is_array(parent
->type
) ||
639 glsl_type_is_matrix(parent
->type
));
641 nir_deref_instr
*deref
=
642 nir_deref_instr_create(build
->shader
, nir_deref_type_array_wildcard
);
644 deref
->mode
= parent
->mode
;
645 deref
->type
= glsl_get_array_element(parent
->type
);
646 deref
->parent
= nir_src_for_ssa(&parent
->dest
.ssa
);
648 nir_ssa_dest_init(&deref
->instr
, &deref
->dest
,
649 parent
->dest
.ssa
.num_components
,
650 parent
->dest
.ssa
.bit_size
, NULL
);
652 nir_builder_instr_insert(build
, &deref
->instr
);
657 static inline nir_deref_instr
*
658 nir_build_deref_struct(nir_builder
*build
, nir_deref_instr
*parent
,
661 assert(glsl_type_is_struct(parent
->type
));
663 nir_deref_instr
*deref
=
664 nir_deref_instr_create(build
->shader
, nir_deref_type_struct
);
666 deref
->mode
= parent
->mode
;
667 deref
->type
= glsl_get_struct_field(parent
->type
, index
);
668 deref
->parent
= nir_src_for_ssa(&parent
->dest
.ssa
);
669 deref
->strct
.index
= index
;
671 nir_ssa_dest_init(&deref
->instr
, &deref
->dest
,
672 parent
->dest
.ssa
.num_components
,
673 parent
->dest
.ssa
.bit_size
, NULL
);
675 nir_builder_instr_insert(build
, &deref
->instr
);
680 static inline nir_deref_instr
*
681 nir_build_deref_cast(nir_builder
*build
, nir_ssa_def
*parent
,
682 nir_variable_mode mode
, const struct glsl_type
*type
)
684 nir_deref_instr
*deref
=
685 nir_deref_instr_create(build
->shader
, nir_deref_type_cast
);
689 deref
->parent
= nir_src_for_ssa(parent
);
691 nir_ssa_dest_init(&deref
->instr
, &deref
->dest
,
692 parent
->num_components
, parent
->bit_size
, NULL
);
694 nir_builder_instr_insert(build
, &deref
->instr
);
699 /** Returns a deref that follows another but starting from the given parent
701 * The new deref will be the same type and take the same array or struct index
702 * as the leader deref but it may have a different parent. This is very
703 * useful for walking deref paths.
705 static inline nir_deref_instr
*
706 nir_build_deref_follower(nir_builder
*b
, nir_deref_instr
*parent
,
707 nir_deref_instr
*leader
)
709 /* If the derefs would have the same parent, don't make a new one */
710 assert(leader
->parent
.is_ssa
);
711 if (leader
->parent
.ssa
== &parent
->dest
.ssa
)
714 UNUSED nir_deref_instr
*leader_parent
= nir_src_as_deref(leader
->parent
);
716 switch (leader
->deref_type
) {
717 case nir_deref_type_var
:
718 unreachable("A var dereference cannot have a parent");
721 case nir_deref_type_array
:
722 case nir_deref_type_array_wildcard
:
723 assert(glsl_type_is_matrix(parent
->type
) ||
724 glsl_type_is_array(parent
->type
));
725 assert(glsl_get_length(parent
->type
) ==
726 glsl_get_length(leader_parent
->type
));
728 if (leader
->deref_type
== nir_deref_type_array
) {
729 assert(leader
->arr
.index
.is_ssa
);
730 return nir_build_deref_array(b
, parent
, leader
->arr
.index
.ssa
);
732 return nir_build_deref_array_wildcard(b
, parent
);
735 case nir_deref_type_struct
:
736 assert(glsl_type_is_struct(parent
->type
));
737 assert(glsl_get_length(parent
->type
) ==
738 glsl_get_length(leader_parent
->type
));
740 return nir_build_deref_struct(b
, parent
, leader
->strct
.index
);
743 unreachable("Invalid deref instruction type");
747 static inline nir_ssa_def
*
748 nir_load_reg(nir_builder
*build
, nir_register
*reg
)
750 return nir_ssa_for_src(build
, nir_src_for_reg(reg
), reg
->num_components
);
753 static inline nir_ssa_def
*
754 nir_load_deref(nir_builder
*build
, nir_deref_instr
*deref
)
756 nir_intrinsic_instr
*load
=
757 nir_intrinsic_instr_create(build
->shader
, nir_intrinsic_load_deref
);
758 load
->num_components
= glsl_get_vector_elements(deref
->type
);
759 load
->src
[0] = nir_src_for_ssa(&deref
->dest
.ssa
);
760 nir_ssa_dest_init(&load
->instr
, &load
->dest
, load
->num_components
,
761 glsl_get_bit_size(deref
->type
), NULL
);
762 nir_builder_instr_insert(build
, &load
->instr
);
763 return &load
->dest
.ssa
;
767 nir_store_deref(nir_builder
*build
, nir_deref_instr
*deref
,
768 nir_ssa_def
*value
, unsigned writemask
)
770 nir_intrinsic_instr
*store
=
771 nir_intrinsic_instr_create(build
->shader
, nir_intrinsic_store_deref
);
772 store
->num_components
= glsl_get_vector_elements(deref
->type
);
773 store
->src
[0] = nir_src_for_ssa(&deref
->dest
.ssa
);
774 store
->src
[1] = nir_src_for_ssa(value
);
775 nir_intrinsic_set_write_mask(store
,
776 writemask
& ((1 << store
->num_components
) - 1));
777 nir_builder_instr_insert(build
, &store
->instr
);
781 nir_copy_deref(nir_builder
*build
, nir_deref_instr
*dest
, nir_deref_instr
*src
)
783 nir_intrinsic_instr
*copy
=
784 nir_intrinsic_instr_create(build
->shader
, nir_intrinsic_copy_deref
);
785 copy
->src
[0] = nir_src_for_ssa(&dest
->dest
.ssa
);
786 copy
->src
[1] = nir_src_for_ssa(&src
->dest
.ssa
);
787 nir_builder_instr_insert(build
, ©
->instr
);
790 static inline nir_ssa_def
*
791 nir_load_var(nir_builder
*build
, nir_variable
*var
)
793 return nir_load_deref(build
, nir_build_deref_var(build
, var
));
797 nir_store_var(nir_builder
*build
, nir_variable
*var
, nir_ssa_def
*value
,
800 nir_store_deref(build
, nir_build_deref_var(build
, var
), value
, writemask
);
804 nir_copy_var(nir_builder
*build
, nir_variable
*dest
, nir_variable
*src
)
806 nir_copy_deref(build
, nir_build_deref_var(build
, dest
),
807 nir_build_deref_var(build
, src
));
810 static inline nir_ssa_def
*
811 nir_load_param(nir_builder
*build
, uint32_t param_idx
)
813 assert(param_idx
< build
->impl
->function
->num_params
);
814 nir_parameter
*param
= &build
->impl
->function
->params
[param_idx
];
816 nir_intrinsic_instr
*load
=
817 nir_intrinsic_instr_create(build
->shader
, nir_intrinsic_load_param
);
818 nir_intrinsic_set_param_idx(load
, param_idx
);
819 load
->num_components
= param
->num_components
;
820 nir_ssa_dest_init(&load
->instr
, &load
->dest
,
821 param
->num_components
, param
->bit_size
, NULL
);
822 nir_builder_instr_insert(build
, &load
->instr
);
823 return &load
->dest
.ssa
;
826 #include "nir_builder_opcodes.h"
828 static inline nir_ssa_def
*
829 nir_load_barycentric(nir_builder
*build
, nir_intrinsic_op op
,
830 unsigned interp_mode
)
832 nir_intrinsic_instr
*bary
= nir_intrinsic_instr_create(build
->shader
, op
);
833 nir_ssa_dest_init(&bary
->instr
, &bary
->dest
, 2, 32, NULL
);
834 nir_intrinsic_set_interp_mode(bary
, interp_mode
);
835 nir_builder_instr_insert(build
, &bary
->instr
);
836 return &bary
->dest
.ssa
;
840 nir_jump(nir_builder
*build
, nir_jump_type jump_type
)
842 nir_jump_instr
*jump
= nir_jump_instr_create(build
->shader
, jump_type
);
843 nir_builder_instr_insert(build
, &jump
->instr
);
846 static inline nir_ssa_def
*
847 nir_compare_func(nir_builder
*b
, enum compare_func func
,
848 nir_ssa_def
*src0
, nir_ssa_def
*src1
)
851 case COMPARE_FUNC_NEVER
:
852 return nir_imm_int(b
, 0);
853 case COMPARE_FUNC_ALWAYS
:
854 return nir_imm_int(b
, ~0);
855 case COMPARE_FUNC_EQUAL
:
856 return nir_feq(b
, src0
, src1
);
857 case COMPARE_FUNC_NOTEQUAL
:
858 return nir_fne(b
, src0
, src1
);
859 case COMPARE_FUNC_GREATER
:
860 return nir_flt(b
, src1
, src0
);
861 case COMPARE_FUNC_GEQUAL
:
862 return nir_fge(b
, src0
, src1
);
863 case COMPARE_FUNC_LESS
:
864 return nir_flt(b
, src0
, src1
);
865 case COMPARE_FUNC_LEQUAL
:
866 return nir_fge(b
, src1
, src0
);
868 unreachable("bad compare func");
871 #endif /* NIR_BUILDER_H */