2 * Copyright © 2014 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
24 * Connor Abbott (cwabbott0@gmail.com)
29 #include "nir_control_flow_private.h"
33 nir_shader_create(void *mem_ctx
,
34 gl_shader_stage stage
,
35 const nir_shader_compiler_options
*options
)
37 nir_shader
*shader
= ralloc(mem_ctx
, nir_shader
);
39 exec_list_make_empty(&shader
->uniforms
);
40 exec_list_make_empty(&shader
->inputs
);
41 exec_list_make_empty(&shader
->outputs
);
43 shader
->options
= options
;
45 exec_list_make_empty(&shader
->functions
);
46 exec_list_make_empty(&shader
->registers
);
47 exec_list_make_empty(&shader
->globals
);
48 exec_list_make_empty(&shader
->system_values
);
49 shader
->reg_alloc
= 0;
51 shader
->num_inputs
= 0;
52 shader
->num_outputs
= 0;
53 shader
->num_uniforms
= 0;
55 shader
->stage
= stage
;
61 reg_create(void *mem_ctx
, struct exec_list
*list
)
63 nir_register
*reg
= ralloc(mem_ctx
, nir_register
);
65 list_inithead(®
->uses
);
66 list_inithead(®
->defs
);
67 list_inithead(®
->if_uses
);
69 reg
->num_components
= 0;
70 reg
->num_array_elems
= 0;
71 reg
->is_packed
= false;
74 exec_list_push_tail(list
, ®
->node
);
80 nir_global_reg_create(nir_shader
*shader
)
82 nir_register
*reg
= reg_create(shader
, &shader
->registers
);
83 reg
->index
= shader
->reg_alloc
++;
84 reg
->is_global
= true;
90 nir_local_reg_create(nir_function_impl
*impl
)
92 nir_register
*reg
= reg_create(ralloc_parent(impl
), &impl
->registers
);
93 reg
->index
= impl
->reg_alloc
++;
94 reg
->is_global
= false;
100 nir_reg_remove(nir_register
*reg
)
102 exec_node_remove(®
->node
);
106 nir_function_create(nir_shader
*shader
, const char *name
)
108 nir_function
*func
= ralloc(shader
, nir_function
);
110 exec_list_push_tail(&shader
->functions
, &func
->node
);
111 exec_list_make_empty(&func
->overload_list
);
112 func
->name
= ralloc_strdup(func
, name
);
113 func
->shader
= shader
;
118 nir_function_overload
*
119 nir_function_overload_create(nir_function
*func
)
121 void *mem_ctx
= ralloc_parent(func
);
123 nir_function_overload
*overload
= ralloc(mem_ctx
, nir_function_overload
);
125 overload
->num_params
= 0;
126 overload
->params
= NULL
;
127 overload
->return_type
= glsl_void_type();
128 overload
->impl
= NULL
;
130 exec_list_push_tail(&func
->overload_list
, &overload
->node
);
131 overload
->function
= func
;
136 void nir_src_copy(nir_src
*dest
, const nir_src
*src
, void *mem_ctx
)
138 dest
->is_ssa
= src
->is_ssa
;
140 dest
->ssa
= src
->ssa
;
142 dest
->reg
.base_offset
= src
->reg
.base_offset
;
143 dest
->reg
.reg
= src
->reg
.reg
;
144 if (src
->reg
.indirect
) {
145 dest
->reg
.indirect
= ralloc(mem_ctx
, nir_src
);
146 nir_src_copy(dest
->reg
.indirect
, src
->reg
.indirect
, mem_ctx
);
148 dest
->reg
.indirect
= NULL
;
153 void nir_dest_copy(nir_dest
*dest
, const nir_dest
*src
, void *mem_ctx
)
155 /* Copying an SSA definition makes no sense whatsoever. */
156 assert(!src
->is_ssa
);
158 dest
->is_ssa
= false;
160 dest
->reg
.base_offset
= src
->reg
.base_offset
;
161 dest
->reg
.reg
= src
->reg
.reg
;
162 if (src
->reg
.indirect
) {
163 dest
->reg
.indirect
= ralloc(mem_ctx
, nir_src
);
164 nir_src_copy(dest
->reg
.indirect
, src
->reg
.indirect
, mem_ctx
);
166 dest
->reg
.indirect
= NULL
;
171 nir_alu_src_copy(nir_alu_src
*dest
, const nir_alu_src
*src
, void *mem_ctx
)
173 nir_src_copy(&dest
->src
, &src
->src
, mem_ctx
);
174 dest
->abs
= src
->abs
;
175 dest
->negate
= src
->negate
;
176 for (unsigned i
= 0; i
< 4; i
++)
177 dest
->swizzle
[i
] = src
->swizzle
[i
];
181 nir_alu_dest_copy(nir_alu_dest
*dest
, const nir_alu_dest
*src
, void *mem_ctx
)
183 nir_dest_copy(&dest
->dest
, &src
->dest
, mem_ctx
);
184 dest
->write_mask
= src
->write_mask
;
185 dest
->saturate
= src
->saturate
;
190 cf_init(nir_cf_node
*node
, nir_cf_node_type type
)
192 exec_node_init(&node
->node
);
198 nir_function_impl_create(nir_function_overload
*overload
)
200 assert(overload
->impl
== NULL
);
202 void *mem_ctx
= ralloc_parent(overload
);
204 nir_function_impl
*impl
= ralloc(mem_ctx
, nir_function_impl
);
206 overload
->impl
= impl
;
207 impl
->overload
= overload
;
209 cf_init(&impl
->cf_node
, nir_cf_node_function
);
211 exec_list_make_empty(&impl
->body
);
212 exec_list_make_empty(&impl
->registers
);
213 exec_list_make_empty(&impl
->locals
);
214 impl
->num_params
= 0;
216 impl
->return_var
= NULL
;
219 impl
->valid_metadata
= nir_metadata_none
;
221 /* create start & end blocks */
222 nir_block
*start_block
= nir_block_create(mem_ctx
);
223 nir_block
*end_block
= nir_block_create(mem_ctx
);
224 start_block
->cf_node
.parent
= &impl
->cf_node
;
225 end_block
->cf_node
.parent
= &impl
->cf_node
;
226 impl
->end_block
= end_block
;
228 exec_list_push_tail(&impl
->body
, &start_block
->cf_node
.node
);
230 start_block
->successors
[0] = end_block
;
231 _mesa_set_add(end_block
->predecessors
, start_block
);
236 nir_block_create(void *mem_ctx
)
238 nir_block
*block
= ralloc(mem_ctx
, nir_block
);
240 cf_init(&block
->cf_node
, nir_cf_node_block
);
242 block
->successors
[0] = block
->successors
[1] = NULL
;
243 block
->predecessors
= _mesa_set_create(block
, _mesa_hash_pointer
,
244 _mesa_key_pointer_equal
);
245 block
->imm_dom
= NULL
;
246 block
->dom_frontier
= _mesa_set_create(block
, _mesa_hash_pointer
,
247 _mesa_key_pointer_equal
);
249 exec_list_make_empty(&block
->instr_list
);
255 src_init(nir_src
*src
)
259 src
->reg
.indirect
= NULL
;
260 src
->reg
.base_offset
= 0;
264 nir_if_create(void *mem_ctx
)
266 nir_if
*if_stmt
= ralloc(mem_ctx
, nir_if
);
268 cf_init(&if_stmt
->cf_node
, nir_cf_node_if
);
269 src_init(&if_stmt
->condition
);
271 nir_block
*then
= nir_block_create(mem_ctx
);
272 exec_list_make_empty(&if_stmt
->then_list
);
273 exec_list_push_tail(&if_stmt
->then_list
, &then
->cf_node
.node
);
274 then
->cf_node
.parent
= &if_stmt
->cf_node
;
276 nir_block
*else_stmt
= nir_block_create(mem_ctx
);
277 exec_list_make_empty(&if_stmt
->else_list
);
278 exec_list_push_tail(&if_stmt
->else_list
, &else_stmt
->cf_node
.node
);
279 else_stmt
->cf_node
.parent
= &if_stmt
->cf_node
;
285 nir_loop_create(void *mem_ctx
)
287 nir_loop
*loop
= ralloc(mem_ctx
, nir_loop
);
289 cf_init(&loop
->cf_node
, nir_cf_node_loop
);
291 nir_block
*body
= nir_block_create(mem_ctx
);
292 exec_list_make_empty(&loop
->body
);
293 exec_list_push_tail(&loop
->body
, &body
->cf_node
.node
);
294 body
->cf_node
.parent
= &loop
->cf_node
;
296 body
->successors
[0] = body
;
297 _mesa_set_add(body
->predecessors
, body
);
303 instr_init(nir_instr
*instr
, nir_instr_type type
)
307 exec_node_init(&instr
->node
);
311 dest_init(nir_dest
*dest
)
313 dest
->is_ssa
= false;
314 dest
->reg
.reg
= NULL
;
315 dest
->reg
.indirect
= NULL
;
316 dest
->reg
.base_offset
= 0;
320 alu_dest_init(nir_alu_dest
*dest
)
322 dest_init(&dest
->dest
);
323 dest
->saturate
= false;
324 dest
->write_mask
= 0xf;
328 alu_src_init(nir_alu_src
*src
)
331 src
->abs
= src
->negate
= false;
339 nir_alu_instr_create(nir_shader
*shader
, nir_op op
)
341 unsigned num_srcs
= nir_op_infos
[op
].num_inputs
;
342 nir_alu_instr
*instr
=
344 sizeof(nir_alu_instr
) + num_srcs
* sizeof(nir_alu_src
));
346 instr_init(&instr
->instr
, nir_instr_type_alu
);
348 alu_dest_init(&instr
->dest
);
349 for (unsigned i
= 0; i
< num_srcs
; i
++)
350 alu_src_init(&instr
->src
[i
]);
356 nir_jump_instr_create(nir_shader
*shader
, nir_jump_type type
)
358 nir_jump_instr
*instr
= ralloc(shader
, nir_jump_instr
);
359 instr_init(&instr
->instr
, nir_instr_type_jump
);
364 nir_load_const_instr
*
365 nir_load_const_instr_create(nir_shader
*shader
, unsigned num_components
)
367 nir_load_const_instr
*instr
= ralloc(shader
, nir_load_const_instr
);
368 instr_init(&instr
->instr
, nir_instr_type_load_const
);
370 nir_ssa_def_init(&instr
->instr
, &instr
->def
, num_components
, NULL
);
375 nir_intrinsic_instr
*
376 nir_intrinsic_instr_create(nir_shader
*shader
, nir_intrinsic_op op
)
378 unsigned num_srcs
= nir_intrinsic_infos
[op
].num_srcs
;
379 nir_intrinsic_instr
*instr
=
381 sizeof(nir_intrinsic_instr
) + num_srcs
* sizeof(nir_src
));
383 instr_init(&instr
->instr
, nir_instr_type_intrinsic
);
384 instr
->intrinsic
= op
;
386 if (nir_intrinsic_infos
[op
].has_dest
)
387 dest_init(&instr
->dest
);
389 for (unsigned i
= 0; i
< num_srcs
; i
++)
390 src_init(&instr
->src
[i
]);
396 nir_call_instr_create(nir_shader
*shader
, nir_function_overload
*callee
)
398 nir_call_instr
*instr
= ralloc(shader
, nir_call_instr
);
399 instr_init(&instr
->instr
, nir_instr_type_call
);
401 instr
->callee
= callee
;
402 instr
->num_params
= callee
->num_params
;
403 instr
->params
= ralloc_array(instr
, nir_deref_var
*, instr
->num_params
);
404 instr
->return_deref
= NULL
;
410 nir_tex_instr_create(nir_shader
*shader
, unsigned num_srcs
)
412 nir_tex_instr
*instr
= rzalloc(shader
, nir_tex_instr
);
413 instr_init(&instr
->instr
, nir_instr_type_tex
);
415 dest_init(&instr
->dest
);
417 instr
->num_srcs
= num_srcs
;
418 instr
->src
= ralloc_array(instr
, nir_tex_src
, num_srcs
);
419 for (unsigned i
= 0; i
< num_srcs
; i
++)
420 src_init(&instr
->src
[i
].src
);
422 instr
->sampler_index
= 0;
423 instr
->sampler_array_size
= 0;
424 instr
->sampler
= NULL
;
430 nir_phi_instr_create(nir_shader
*shader
)
432 nir_phi_instr
*instr
= ralloc(shader
, nir_phi_instr
);
433 instr_init(&instr
->instr
, nir_instr_type_phi
);
435 dest_init(&instr
->dest
);
436 exec_list_make_empty(&instr
->srcs
);
440 nir_parallel_copy_instr
*
441 nir_parallel_copy_instr_create(nir_shader
*shader
)
443 nir_parallel_copy_instr
*instr
= ralloc(shader
, nir_parallel_copy_instr
);
444 instr_init(&instr
->instr
, nir_instr_type_parallel_copy
);
446 exec_list_make_empty(&instr
->entries
);
451 nir_ssa_undef_instr
*
452 nir_ssa_undef_instr_create(nir_shader
*shader
, unsigned num_components
)
454 nir_ssa_undef_instr
*instr
= ralloc(shader
, nir_ssa_undef_instr
);
455 instr_init(&instr
->instr
, nir_instr_type_ssa_undef
);
457 nir_ssa_def_init(&instr
->instr
, &instr
->def
, num_components
, NULL
);
463 nir_deref_var_create(void *mem_ctx
, nir_variable
*var
)
465 nir_deref_var
*deref
= ralloc(mem_ctx
, nir_deref_var
);
466 deref
->deref
.deref_type
= nir_deref_type_var
;
467 deref
->deref
.child
= NULL
;
468 deref
->deref
.type
= var
->type
;
474 nir_deref_array_create(void *mem_ctx
)
476 nir_deref_array
*deref
= ralloc(mem_ctx
, nir_deref_array
);
477 deref
->deref
.deref_type
= nir_deref_type_array
;
478 deref
->deref
.child
= NULL
;
479 deref
->deref_array_type
= nir_deref_array_type_direct
;
480 src_init(&deref
->indirect
);
481 deref
->base_offset
= 0;
486 nir_deref_struct_create(void *mem_ctx
, unsigned field_index
)
488 nir_deref_struct
*deref
= ralloc(mem_ctx
, nir_deref_struct
);
489 deref
->deref
.deref_type
= nir_deref_type_struct
;
490 deref
->deref
.child
= NULL
;
491 deref
->index
= field_index
;
495 static nir_deref_var
*
496 copy_deref_var(void *mem_ctx
, nir_deref_var
*deref
)
498 nir_deref_var
*ret
= nir_deref_var_create(mem_ctx
, deref
->var
);
499 ret
->deref
.type
= deref
->deref
.type
;
500 if (deref
->deref
.child
)
501 ret
->deref
.child
= nir_copy_deref(ret
, deref
->deref
.child
);
505 static nir_deref_array
*
506 copy_deref_array(void *mem_ctx
, nir_deref_array
*deref
)
508 nir_deref_array
*ret
= nir_deref_array_create(mem_ctx
);
509 ret
->base_offset
= deref
->base_offset
;
510 ret
->deref_array_type
= deref
->deref_array_type
;
511 if (deref
->deref_array_type
== nir_deref_array_type_indirect
) {
512 nir_src_copy(&ret
->indirect
, &deref
->indirect
, mem_ctx
);
514 ret
->deref
.type
= deref
->deref
.type
;
515 if (deref
->deref
.child
)
516 ret
->deref
.child
= nir_copy_deref(ret
, deref
->deref
.child
);
520 static nir_deref_struct
*
521 copy_deref_struct(void *mem_ctx
, nir_deref_struct
*deref
)
523 nir_deref_struct
*ret
= nir_deref_struct_create(mem_ctx
, deref
->index
);
524 ret
->deref
.type
= deref
->deref
.type
;
525 if (deref
->deref
.child
)
526 ret
->deref
.child
= nir_copy_deref(ret
, deref
->deref
.child
);
531 nir_copy_deref(void *mem_ctx
, nir_deref
*deref
)
533 switch (deref
->deref_type
) {
534 case nir_deref_type_var
:
535 return ©_deref_var(mem_ctx
, nir_deref_as_var(deref
))->deref
;
536 case nir_deref_type_array
:
537 return ©_deref_array(mem_ctx
, nir_deref_as_array(deref
))->deref
;
538 case nir_deref_type_struct
:
539 return ©_deref_struct(mem_ctx
, nir_deref_as_struct(deref
))->deref
;
541 unreachable("Invalid dereference type");
547 /* Returns a load_const instruction that represents the constant
548 * initializer for the given deref chain. The caller is responsible for
549 * ensuring that there actually is a constant initializer.
551 nir_load_const_instr
*
552 nir_deref_get_const_initializer_load(nir_shader
*shader
, nir_deref_var
*deref
)
554 nir_constant
*constant
= deref
->var
->constant_initializer
;
557 const nir_deref
*tail
= &deref
->deref
;
558 unsigned matrix_offset
= 0;
559 while (tail
->child
) {
560 switch (tail
->child
->deref_type
) {
561 case nir_deref_type_array
: {
562 nir_deref_array
*arr
= nir_deref_as_array(tail
->child
);
563 assert(arr
->deref_array_type
== nir_deref_array_type_direct
);
564 if (glsl_type_is_matrix(tail
->type
)) {
565 assert(arr
->deref
.child
== NULL
);
566 matrix_offset
= arr
->base_offset
;
568 constant
= constant
->elements
[arr
->base_offset
];
573 case nir_deref_type_struct
: {
574 constant
= constant
->elements
[nir_deref_as_struct(tail
->child
)->index
];
579 unreachable("Invalid deref child type");
585 nir_load_const_instr
*load
=
586 nir_load_const_instr_create(shader
, glsl_get_vector_elements(tail
->type
));
588 matrix_offset
*= load
->def
.num_components
;
589 for (unsigned i
= 0; i
< load
->def
.num_components
; i
++) {
590 switch (glsl_get_base_type(tail
->type
)) {
591 case GLSL_TYPE_FLOAT
:
594 load
->value
.u
[i
] = constant
->value
.u
[matrix_offset
+ i
];
597 load
->value
.u
[i
] = constant
->value
.b
[matrix_offset
+ i
] ?
598 NIR_TRUE
: NIR_FALSE
;
601 unreachable("Invalid immediate type");
609 nir_cf_node_get_function(nir_cf_node
*node
)
611 while (node
->type
!= nir_cf_node_function
) {
615 return nir_cf_node_as_function(node
);
619 add_use_cb(nir_src
*src
, void *state
)
621 nir_instr
*instr
= state
;
623 src
->parent_instr
= instr
;
624 list_addtail(&src
->use_link
,
625 src
->is_ssa
? &src
->ssa
->uses
: &src
->reg
.reg
->uses
);
631 add_ssa_def_cb(nir_ssa_def
*def
, void *state
)
633 nir_instr
*instr
= state
;
635 if (instr
->block
&& def
->index
== UINT_MAX
) {
636 nir_function_impl
*impl
=
637 nir_cf_node_get_function(&instr
->block
->cf_node
);
639 def
->index
= impl
->ssa_alloc
++;
646 add_reg_def_cb(nir_dest
*dest
, void *state
)
648 nir_instr
*instr
= state
;
651 dest
->reg
.parent_instr
= instr
;
652 list_addtail(&dest
->reg
.def_link
, &dest
->reg
.reg
->defs
);
659 add_defs_uses(nir_instr
*instr
)
661 nir_foreach_src(instr
, add_use_cb
, instr
);
662 nir_foreach_dest(instr
, add_reg_def_cb
, instr
);
663 nir_foreach_ssa_def(instr
, add_ssa_def_cb
, instr
);
667 nir_instr_insert_before(nir_instr
*instr
, nir_instr
*before
)
669 assert(before
->type
!= nir_instr_type_jump
);
670 before
->block
= instr
->block
;
671 add_defs_uses(before
);
672 exec_node_insert_node_before(&instr
->node
, &before
->node
);
676 nir_instr_insert_after(nir_instr
*instr
, nir_instr
*after
)
678 if (after
->type
== nir_instr_type_jump
) {
679 assert(instr
== nir_block_last_instr(instr
->block
));
680 assert(instr
->type
!= nir_instr_type_jump
);
683 after
->block
= instr
->block
;
684 add_defs_uses(after
);
685 exec_node_insert_after(&instr
->node
, &after
->node
);
687 if (after
->type
== nir_instr_type_jump
)
688 nir_handle_add_jump(after
->block
);
692 nir_instr_insert_before_block(nir_block
*block
, nir_instr
*before
)
694 if (before
->type
== nir_instr_type_jump
)
695 assert(exec_list_is_empty(&block
->instr_list
));
697 before
->block
= block
;
698 add_defs_uses(before
);
699 exec_list_push_head(&block
->instr_list
, &before
->node
);
701 if (before
->type
== nir_instr_type_jump
)
702 nir_handle_add_jump(block
);
706 nir_instr_insert_after_block(nir_block
*block
, nir_instr
*after
)
708 if (after
->type
== nir_instr_type_jump
) {
709 assert(exec_list_is_empty(&block
->instr_list
) ||
710 nir_block_last_instr(block
)->type
!= nir_instr_type_jump
);
713 after
->block
= block
;
714 add_defs_uses(after
);
715 exec_list_push_tail(&block
->instr_list
, &after
->node
);
717 if (after
->type
== nir_instr_type_jump
)
718 nir_handle_add_jump(block
);
722 nir_instr_insert_before_cf(nir_cf_node
*node
, nir_instr
*before
)
724 if (node
->type
== nir_cf_node_block
) {
725 nir_instr_insert_before_block(nir_cf_node_as_block(node
), before
);
727 nir_cf_node
*prev
= nir_cf_node_prev(node
);
728 assert(prev
->type
== nir_cf_node_block
);
729 nir_block
*prev_block
= nir_cf_node_as_block(prev
);
731 nir_instr_insert_before_block(prev_block
, before
);
736 nir_instr_insert_after_cf(nir_cf_node
*node
, nir_instr
*after
)
738 if (node
->type
== nir_cf_node_block
) {
739 nir_instr_insert_after_block(nir_cf_node_as_block(node
), after
);
741 nir_cf_node
*next
= nir_cf_node_next(node
);
742 assert(next
->type
== nir_cf_node_block
);
743 nir_block
*next_block
= nir_cf_node_as_block(next
);
745 nir_instr_insert_before_block(next_block
, after
);
750 nir_instr_insert_before_cf_list(struct exec_list
*list
, nir_instr
*before
)
752 nir_cf_node
*first_node
= exec_node_data(nir_cf_node
,
753 exec_list_get_head(list
), node
);
754 nir_instr_insert_before_cf(first_node
, before
);
758 nir_instr_insert_after_cf_list(struct exec_list
*list
, nir_instr
*after
)
760 nir_cf_node
*last_node
= exec_node_data(nir_cf_node
,
761 exec_list_get_tail(list
), node
);
762 nir_instr_insert_after_cf(last_node
, after
);
766 remove_use_cb(nir_src
*src
, void *state
)
768 list_del(&src
->use_link
);
774 remove_def_cb(nir_dest
*dest
, void *state
)
777 list_del(&dest
->reg
.def_link
);
783 remove_defs_uses(nir_instr
*instr
)
785 nir_foreach_dest(instr
, remove_def_cb
, instr
);
786 nir_foreach_src(instr
, remove_use_cb
, instr
);
789 void nir_instr_remove(nir_instr
*instr
)
791 remove_defs_uses(instr
);
792 exec_node_remove(&instr
->node
);
794 if (instr
->type
== nir_instr_type_jump
) {
795 nir_jump_instr
*jump_instr
= nir_instr_as_jump(instr
);
796 nir_handle_remove_jump(instr
->block
, jump_instr
->type
);
803 nir_index_local_regs(nir_function_impl
*impl
)
806 foreach_list_typed(nir_register
, reg
, node
, &impl
->registers
) {
807 reg
->index
= index
++;
809 impl
->reg_alloc
= index
;
813 nir_index_global_regs(nir_shader
*shader
)
816 foreach_list_typed(nir_register
, reg
, node
, &shader
->registers
) {
817 reg
->index
= index
++;
819 shader
->reg_alloc
= index
;
823 visit_alu_dest(nir_alu_instr
*instr
, nir_foreach_dest_cb cb
, void *state
)
825 return cb(&instr
->dest
.dest
, state
);
829 visit_intrinsic_dest(nir_intrinsic_instr
*instr
, nir_foreach_dest_cb cb
,
832 if (nir_intrinsic_infos
[instr
->intrinsic
].has_dest
)
833 return cb(&instr
->dest
, state
);
839 visit_texture_dest(nir_tex_instr
*instr
, nir_foreach_dest_cb cb
,
842 return cb(&instr
->dest
, state
);
846 visit_phi_dest(nir_phi_instr
*instr
, nir_foreach_dest_cb cb
, void *state
)
848 return cb(&instr
->dest
, state
);
852 visit_parallel_copy_dest(nir_parallel_copy_instr
*instr
,
853 nir_foreach_dest_cb cb
, void *state
)
855 nir_foreach_parallel_copy_entry(instr
, entry
) {
856 if (!cb(&entry
->dest
, state
))
864 nir_foreach_dest(nir_instr
*instr
, nir_foreach_dest_cb cb
, void *state
)
866 switch (instr
->type
) {
867 case nir_instr_type_alu
:
868 return visit_alu_dest(nir_instr_as_alu(instr
), cb
, state
);
869 case nir_instr_type_intrinsic
:
870 return visit_intrinsic_dest(nir_instr_as_intrinsic(instr
), cb
, state
);
871 case nir_instr_type_tex
:
872 return visit_texture_dest(nir_instr_as_tex(instr
), cb
, state
);
873 case nir_instr_type_phi
:
874 return visit_phi_dest(nir_instr_as_phi(instr
), cb
, state
);
875 case nir_instr_type_parallel_copy
:
876 return visit_parallel_copy_dest(nir_instr_as_parallel_copy(instr
),
879 case nir_instr_type_load_const
:
880 case nir_instr_type_ssa_undef
:
881 case nir_instr_type_call
:
882 case nir_instr_type_jump
:
886 unreachable("Invalid instruction type");
893 struct foreach_ssa_def_state
{
894 nir_foreach_ssa_def_cb cb
;
899 nir_ssa_def_visitor(nir_dest
*dest
, void *void_state
)
901 struct foreach_ssa_def_state
*state
= void_state
;
904 return state
->cb(&dest
->ssa
, state
->client_state
);
910 nir_foreach_ssa_def(nir_instr
*instr
, nir_foreach_ssa_def_cb cb
, void *state
)
912 switch (instr
->type
) {
913 case nir_instr_type_alu
:
914 case nir_instr_type_tex
:
915 case nir_instr_type_intrinsic
:
916 case nir_instr_type_phi
:
917 case nir_instr_type_parallel_copy
: {
918 struct foreach_ssa_def_state foreach_state
= {cb
, state
};
919 return nir_foreach_dest(instr
, nir_ssa_def_visitor
, &foreach_state
);
922 case nir_instr_type_load_const
:
923 return cb(&nir_instr_as_load_const(instr
)->def
, state
);
924 case nir_instr_type_ssa_undef
:
925 return cb(&nir_instr_as_ssa_undef(instr
)->def
, state
);
926 case nir_instr_type_call
:
927 case nir_instr_type_jump
:
930 unreachable("Invalid instruction type");
935 visit_src(nir_src
*src
, nir_foreach_src_cb cb
, void *state
)
939 if (!src
->is_ssa
&& src
->reg
.indirect
)
940 return cb(src
->reg
.indirect
, state
);
945 visit_deref_array_src(nir_deref_array
*deref
, nir_foreach_src_cb cb
,
948 if (deref
->deref_array_type
== nir_deref_array_type_indirect
)
949 return visit_src(&deref
->indirect
, cb
, state
);
954 visit_deref_src(nir_deref_var
*deref
, nir_foreach_src_cb cb
, void *state
)
956 nir_deref
*cur
= &deref
->deref
;
957 while (cur
!= NULL
) {
958 if (cur
->deref_type
== nir_deref_type_array
)
959 if (!visit_deref_array_src(nir_deref_as_array(cur
), cb
, state
))
969 visit_alu_src(nir_alu_instr
*instr
, nir_foreach_src_cb cb
, void *state
)
971 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
972 if (!visit_src(&instr
->src
[i
].src
, cb
, state
))
979 visit_tex_src(nir_tex_instr
*instr
, nir_foreach_src_cb cb
, void *state
)
981 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++)
982 if (!visit_src(&instr
->src
[i
].src
, cb
, state
))
985 if (instr
->sampler
!= NULL
)
986 if (!visit_deref_src(instr
->sampler
, cb
, state
))
993 visit_intrinsic_src(nir_intrinsic_instr
*instr
, nir_foreach_src_cb cb
,
996 unsigned num_srcs
= nir_intrinsic_infos
[instr
->intrinsic
].num_srcs
;
997 for (unsigned i
= 0; i
< num_srcs
; i
++)
998 if (!visit_src(&instr
->src
[i
], cb
, state
))
1002 nir_intrinsic_infos
[instr
->intrinsic
].num_variables
;
1003 for (unsigned i
= 0; i
< num_vars
; i
++)
1004 if (!visit_deref_src(instr
->variables
[i
], cb
, state
))
1011 visit_call_src(nir_call_instr
*instr
, nir_foreach_src_cb cb
, void *state
)
1017 visit_load_const_src(nir_load_const_instr
*instr
, nir_foreach_src_cb cb
,
1024 visit_phi_src(nir_phi_instr
*instr
, nir_foreach_src_cb cb
, void *state
)
1026 nir_foreach_phi_src(instr
, src
) {
1027 if (!visit_src(&src
->src
, cb
, state
))
1035 visit_parallel_copy_src(nir_parallel_copy_instr
*instr
,
1036 nir_foreach_src_cb cb
, void *state
)
1038 nir_foreach_parallel_copy_entry(instr
, entry
) {
1039 if (!visit_src(&entry
->src
, cb
, state
))
1048 nir_foreach_src_cb cb
;
1049 } visit_dest_indirect_state
;
1052 visit_dest_indirect(nir_dest
*dest
, void *_state
)
1054 visit_dest_indirect_state
*state
= (visit_dest_indirect_state
*) _state
;
1056 if (!dest
->is_ssa
&& dest
->reg
.indirect
)
1057 return state
->cb(dest
->reg
.indirect
, state
->state
);
1063 nir_foreach_src(nir_instr
*instr
, nir_foreach_src_cb cb
, void *state
)
1065 switch (instr
->type
) {
1066 case nir_instr_type_alu
:
1067 if (!visit_alu_src(nir_instr_as_alu(instr
), cb
, state
))
1070 case nir_instr_type_intrinsic
:
1071 if (!visit_intrinsic_src(nir_instr_as_intrinsic(instr
), cb
, state
))
1074 case nir_instr_type_tex
:
1075 if (!visit_tex_src(nir_instr_as_tex(instr
), cb
, state
))
1078 case nir_instr_type_call
:
1079 if (!visit_call_src(nir_instr_as_call(instr
), cb
, state
))
1082 case nir_instr_type_load_const
:
1083 if (!visit_load_const_src(nir_instr_as_load_const(instr
), cb
, state
))
1086 case nir_instr_type_phi
:
1087 if (!visit_phi_src(nir_instr_as_phi(instr
), cb
, state
))
1090 case nir_instr_type_parallel_copy
:
1091 if (!visit_parallel_copy_src(nir_instr_as_parallel_copy(instr
),
1095 case nir_instr_type_jump
:
1096 case nir_instr_type_ssa_undef
:
1100 unreachable("Invalid instruction type");
1104 visit_dest_indirect_state dest_state
;
1105 dest_state
.state
= state
;
1107 return nir_foreach_dest(instr
, visit_dest_indirect
, &dest_state
);
1111 nir_src_as_const_value(nir_src src
)
1116 if (src
.ssa
->parent_instr
->type
!= nir_instr_type_load_const
)
1119 nir_load_const_instr
*load
= nir_instr_as_load_const(src
.ssa
->parent_instr
);
1121 return &load
->value
;
1125 nir_srcs_equal(nir_src src1
, nir_src src2
)
1129 return src1
.ssa
== src2
.ssa
;
1137 if ((src1
.reg
.indirect
== NULL
) != (src2
.reg
.indirect
== NULL
))
1140 if (src1
.reg
.indirect
) {
1141 if (!nir_srcs_equal(*src1
.reg
.indirect
, *src2
.reg
.indirect
))
1145 return src1
.reg
.reg
== src2
.reg
.reg
&&
1146 src1
.reg
.base_offset
== src2
.reg
.base_offset
;
1152 src_is_valid(const nir_src
*src
)
1154 return src
->is_ssa
? (src
->ssa
!= NULL
) : (src
->reg
.reg
!= NULL
);
1158 src_remove_all_uses(nir_src
*src
)
1160 for (; src
; src
= src
->is_ssa
? NULL
: src
->reg
.indirect
) {
1161 if (!src_is_valid(src
))
1164 list_del(&src
->use_link
);
1169 src_add_all_uses(nir_src
*src
, nir_instr
*parent_instr
, nir_if
*parent_if
)
1171 for (; src
; src
= src
->is_ssa
? NULL
: src
->reg
.indirect
) {
1172 if (!src_is_valid(src
))
1176 src
->parent_instr
= parent_instr
;
1178 list_addtail(&src
->use_link
, &src
->ssa
->uses
);
1180 list_addtail(&src
->use_link
, &src
->reg
.reg
->uses
);
1183 src
->parent_if
= parent_if
;
1185 list_addtail(&src
->use_link
, &src
->ssa
->if_uses
);
1187 list_addtail(&src
->use_link
, &src
->reg
.reg
->if_uses
);
1193 nir_instr_rewrite_src(nir_instr
*instr
, nir_src
*src
, nir_src new_src
)
1195 assert(!src_is_valid(src
) || src
->parent_instr
== instr
);
1197 src_remove_all_uses(src
);
1199 src_add_all_uses(src
, instr
, NULL
);
1203 nir_instr_move_src(nir_instr
*dest_instr
, nir_src
*dest
, nir_src
*src
)
1205 assert(!src_is_valid(dest
) || dest
->parent_instr
== dest_instr
);
1207 src_remove_all_uses(dest
);
1208 src_remove_all_uses(src
);
1210 *src
= NIR_SRC_INIT
;
1211 src_add_all_uses(dest
, dest_instr
, NULL
);
1215 nir_if_rewrite_condition(nir_if
*if_stmt
, nir_src new_src
)
1217 nir_src
*src
= &if_stmt
->condition
;
1218 assert(!src_is_valid(src
) || src
->parent_if
== if_stmt
);
1220 src_remove_all_uses(src
);
1222 src_add_all_uses(src
, NULL
, if_stmt
);
1226 nir_ssa_def_init(nir_instr
*instr
, nir_ssa_def
*def
,
1227 unsigned num_components
, const char *name
)
1230 def
->parent_instr
= instr
;
1231 list_inithead(&def
->uses
);
1232 list_inithead(&def
->if_uses
);
1233 def
->num_components
= num_components
;
1236 nir_function_impl
*impl
=
1237 nir_cf_node_get_function(&instr
->block
->cf_node
);
1239 def
->index
= impl
->ssa_alloc
++;
1241 def
->index
= UINT_MAX
;
1246 nir_ssa_dest_init(nir_instr
*instr
, nir_dest
*dest
,
1247 unsigned num_components
, const char *name
)
1249 dest
->is_ssa
= true;
1250 nir_ssa_def_init(instr
, &dest
->ssa
, num_components
, name
);
1254 nir_ssa_def_rewrite_uses(nir_ssa_def
*def
, nir_src new_src
, void *mem_ctx
)
1256 assert(!new_src
.is_ssa
|| def
!= new_src
.ssa
);
1258 nir_foreach_use_safe(def
, use_src
) {
1259 nir_instr
*src_parent_instr
= use_src
->parent_instr
;
1260 list_del(&use_src
->use_link
);
1261 nir_src_copy(use_src
, &new_src
, mem_ctx
);
1262 src_add_all_uses(use_src
, src_parent_instr
, NULL
);
1265 nir_foreach_if_use_safe(def
, use_src
) {
1266 nir_if
*src_parent_if
= use_src
->parent_if
;
1267 list_del(&use_src
->use_link
);
1268 nir_src_copy(use_src
, &new_src
, mem_ctx
);
1269 src_add_all_uses(use_src
, NULL
, src_parent_if
);
1274 static bool foreach_cf_node(nir_cf_node
*node
, nir_foreach_block_cb cb
,
1275 bool reverse
, void *state
);
1278 foreach_if(nir_if
*if_stmt
, nir_foreach_block_cb cb
, bool reverse
, void *state
)
1281 foreach_list_typed_safe_reverse(nir_cf_node
, node
, node
,
1282 &if_stmt
->else_list
) {
1283 if (!foreach_cf_node(node
, cb
, reverse
, state
))
1287 foreach_list_typed_safe_reverse(nir_cf_node
, node
, node
,
1288 &if_stmt
->then_list
) {
1289 if (!foreach_cf_node(node
, cb
, reverse
, state
))
1293 foreach_list_typed_safe(nir_cf_node
, node
, node
, &if_stmt
->then_list
) {
1294 if (!foreach_cf_node(node
, cb
, reverse
, state
))
1298 foreach_list_typed_safe(nir_cf_node
, node
, node
, &if_stmt
->else_list
) {
1299 if (!foreach_cf_node(node
, cb
, reverse
, state
))
1308 foreach_loop(nir_loop
*loop
, nir_foreach_block_cb cb
, bool reverse
, void *state
)
1311 foreach_list_typed_safe_reverse(nir_cf_node
, node
, node
, &loop
->body
) {
1312 if (!foreach_cf_node(node
, cb
, reverse
, state
))
1316 foreach_list_typed_safe(nir_cf_node
, node
, node
, &loop
->body
) {
1317 if (!foreach_cf_node(node
, cb
, reverse
, state
))
1326 foreach_cf_node(nir_cf_node
*node
, nir_foreach_block_cb cb
,
1327 bool reverse
, void *state
)
1329 switch (node
->type
) {
1330 case nir_cf_node_block
:
1331 return cb(nir_cf_node_as_block(node
), state
);
1332 case nir_cf_node_if
:
1333 return foreach_if(nir_cf_node_as_if(node
), cb
, reverse
, state
);
1334 case nir_cf_node_loop
:
1335 return foreach_loop(nir_cf_node_as_loop(node
), cb
, reverse
, state
);
1339 unreachable("Invalid CFG node type");
1347 nir_foreach_block(nir_function_impl
*impl
, nir_foreach_block_cb cb
, void *state
)
1349 foreach_list_typed_safe(nir_cf_node
, node
, node
, &impl
->body
) {
1350 if (!foreach_cf_node(node
, cb
, false, state
))
1354 return cb(impl
->end_block
, state
);
1358 nir_foreach_block_reverse(nir_function_impl
*impl
, nir_foreach_block_cb cb
,
1361 if (!cb(impl
->end_block
, state
))
1364 foreach_list_typed_safe_reverse(nir_cf_node
, node
, node
, &impl
->body
) {
1365 if (!foreach_cf_node(node
, cb
, true, state
))
1373 nir_block_get_following_if(nir_block
*block
)
1375 if (exec_node_is_tail_sentinel(&block
->cf_node
.node
))
1378 if (nir_cf_node_is_last(&block
->cf_node
))
1381 nir_cf_node
*next_node
= nir_cf_node_next(&block
->cf_node
);
1383 if (next_node
->type
!= nir_cf_node_if
)
1386 return nir_cf_node_as_if(next_node
);
1390 index_block(nir_block
*block
, void *state
)
1392 unsigned *index
= state
;
1393 block
->index
= (*index
)++;
1398 nir_index_blocks(nir_function_impl
*impl
)
1402 if (impl
->valid_metadata
& nir_metadata_block_index
)
1405 nir_foreach_block(impl
, index_block
, &index
);
1407 impl
->num_blocks
= index
;
1411 index_ssa_def_cb(nir_ssa_def
*def
, void *state
)
1413 unsigned *index
= (unsigned *) state
;
1414 def
->index
= (*index
)++;
1420 index_ssa_block(nir_block
*block
, void *state
)
1422 nir_foreach_instr(block
, instr
)
1423 nir_foreach_ssa_def(instr
, index_ssa_def_cb
, state
);
1429 nir_index_ssa_defs(nir_function_impl
*impl
)
1432 nir_foreach_block(impl
, index_ssa_block
, &index
);
1433 impl
->ssa_alloc
= index
;