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)
32 * This file checks for invalid IR indicating a bug somewhere in the compiler.
35 /* Since this file is just a pile of asserts, don't bother compiling it if
36 * we're not building a debug build.
41 * Per-register validation state.
46 * equivalent to the uses and defs in nir_register, but built up by the
47 * validator. At the end, we verify that the sets have the same entries.
49 struct set
*uses
, *if_uses
, *defs
;
50 nir_function_impl
*where_defined
; /* NULL for global registers */
55 * equivalent to the uses in nir_ssa_def, but built up by the validator.
56 * At the end, we verify that the sets have the same entries.
58 struct set
*uses
, *if_uses
;
59 nir_function_impl
*where_defined
;
60 } ssa_def_validate_state
;
63 /* map of register -> validation state (struct above) */
64 struct hash_table
*regs
;
66 /* the current shader being validated */
69 /* the current instruction being validated */
72 /* the current basic block being validated */
75 /* the current if statement being validated */
78 /* the current loop being visited */
81 /* the parent of the current cf node being visited */
82 nir_cf_node
*parent_node
;
84 /* the current function implementation being validated */
85 nir_function_impl
*impl
;
87 /* map of SSA value -> function implementation where it is defined */
88 struct hash_table
*ssa_defs
;
90 /* bitset of ssa definitions we have found; used to check uniqueness */
91 BITSET_WORD
*ssa_defs_found
;
93 /* bitset of registers we have currently found; used to check uniqueness */
94 BITSET_WORD
*regs_found
;
96 /* map of local variable -> function implementation where it is defined */
97 struct hash_table
*var_defs
;
100 #define validate_assert(state, cond) assert(cond)
102 static void validate_src(nir_src
*src
, validate_state
*state
);
105 validate_reg_src(nir_src
*src
, validate_state
*state
)
107 validate_assert(state
, src
->reg
.reg
!= NULL
);
109 struct hash_entry
*entry
;
110 entry
= _mesa_hash_table_search(state
->regs
, src
->reg
.reg
);
111 validate_assert(state
, entry
);
113 reg_validate_state
*reg_state
= (reg_validate_state
*) entry
->data
;
116 _mesa_set_add(reg_state
->uses
, src
);
118 validate_assert(state
, state
->if_stmt
);
119 _mesa_set_add(reg_state
->if_uses
, src
);
122 if (!src
->reg
.reg
->is_global
) {
123 validate_assert(state
, reg_state
->where_defined
== state
->impl
&&
124 "using a register declared in a different function");
127 validate_assert(state
, (src
->reg
.reg
->num_array_elems
== 0 ||
128 src
->reg
.base_offset
< src
->reg
.reg
->num_array_elems
) &&
129 "definitely out-of-bounds array access");
131 if (src
->reg
.indirect
) {
132 validate_assert(state
, src
->reg
.reg
->num_array_elems
!= 0);
133 validate_assert(state
, (src
->reg
.indirect
->is_ssa
||
134 src
->reg
.indirect
->reg
.indirect
== NULL
) &&
135 "only one level of indirection allowed");
136 validate_src(src
->reg
.indirect
, state
);
141 validate_ssa_src(nir_src
*src
, validate_state
*state
)
143 validate_assert(state
, src
->ssa
!= NULL
);
145 struct hash_entry
*entry
= _mesa_hash_table_search(state
->ssa_defs
, src
->ssa
);
147 validate_assert(state
, entry
);
149 ssa_def_validate_state
*def_state
= (ssa_def_validate_state
*)entry
->data
;
151 validate_assert(state
, def_state
->where_defined
== state
->impl
&&
152 "using an SSA value defined in a different function");
155 _mesa_set_add(def_state
->uses
, src
);
157 validate_assert(state
, state
->if_stmt
);
158 _mesa_set_add(def_state
->if_uses
, src
);
161 /* TODO validate that the use is dominated by the definition */
165 validate_src(nir_src
*src
, validate_state
*state
)
168 validate_assert(state
, src
->parent_instr
== state
->instr
);
170 validate_assert(state
, src
->parent_if
== state
->if_stmt
);
173 validate_ssa_src(src
, state
);
175 validate_reg_src(src
, state
);
179 validate_alu_src(nir_alu_instr
*instr
, unsigned index
, validate_state
*state
)
181 nir_alu_src
*src
= &instr
->src
[index
];
183 unsigned num_components
;
184 unsigned src_bit_size
;
185 if (src
->src
.is_ssa
) {
186 src_bit_size
= src
->src
.ssa
->bit_size
;
187 num_components
= src
->src
.ssa
->num_components
;
189 src_bit_size
= src
->src
.reg
.reg
->bit_size
;
190 if (src
->src
.reg
.reg
->is_packed
)
191 num_components
= 4; /* can't check anything */
193 num_components
= src
->src
.reg
.reg
->num_components
;
195 for (unsigned i
= 0; i
< 4; i
++) {
196 validate_assert(state
, src
->swizzle
[i
] < 4);
198 if (nir_alu_instr_channel_used(instr
, index
, i
))
199 validate_assert(state
, src
->swizzle
[i
] < num_components
);
202 nir_alu_type src_type
= nir_op_infos
[instr
->op
].input_types
[index
];
204 /* 8-bit float isn't a thing */
205 if (nir_alu_type_get_base_type(src_type
) == nir_type_float
)
206 validate_assert(state
, src_bit_size
== 16 || src_bit_size
== 32 || src_bit_size
== 64);
208 if (nir_alu_type_get_type_size(src_type
)) {
209 /* This source has an explicit bit size */
210 validate_assert(state
, nir_alu_type_get_type_size(src_type
) == src_bit_size
);
212 if (!nir_alu_type_get_type_size(nir_op_infos
[instr
->op
].output_type
)) {
213 unsigned dest_bit_size
=
214 instr
->dest
.dest
.is_ssa
? instr
->dest
.dest
.ssa
.bit_size
215 : instr
->dest
.dest
.reg
.reg
->bit_size
;
216 validate_assert(state
, dest_bit_size
== src_bit_size
);
220 validate_src(&src
->src
, state
);
224 validate_reg_dest(nir_reg_dest
*dest
, validate_state
*state
)
226 validate_assert(state
, dest
->reg
!= NULL
);
228 validate_assert(state
, dest
->parent_instr
== state
->instr
);
230 struct hash_entry
*entry2
;
231 entry2
= _mesa_hash_table_search(state
->regs
, dest
->reg
);
233 validate_assert(state
, entry2
);
235 reg_validate_state
*reg_state
= (reg_validate_state
*) entry2
->data
;
236 _mesa_set_add(reg_state
->defs
, dest
);
238 if (!dest
->reg
->is_global
) {
239 validate_assert(state
, reg_state
->where_defined
== state
->impl
&&
240 "writing to a register declared in a different function");
243 validate_assert(state
, (dest
->reg
->num_array_elems
== 0 ||
244 dest
->base_offset
< dest
->reg
->num_array_elems
) &&
245 "definitely out-of-bounds array access");
247 if (dest
->indirect
) {
248 validate_assert(state
, dest
->reg
->num_array_elems
!= 0);
249 validate_assert(state
, (dest
->indirect
->is_ssa
|| dest
->indirect
->reg
.indirect
== NULL
) &&
250 "only one level of indirection allowed");
251 validate_src(dest
->indirect
, state
);
256 validate_ssa_def(nir_ssa_def
*def
, validate_state
*state
)
258 validate_assert(state
, def
->index
< state
->impl
->ssa_alloc
);
259 validate_assert(state
, !BITSET_TEST(state
->ssa_defs_found
, def
->index
));
260 BITSET_SET(state
->ssa_defs_found
, def
->index
);
262 validate_assert(state
, def
->parent_instr
== state
->instr
);
264 validate_assert(state
, def
->num_components
<= 4);
266 list_validate(&def
->uses
);
267 list_validate(&def
->if_uses
);
269 ssa_def_validate_state
*def_state
= ralloc(state
->ssa_defs
,
270 ssa_def_validate_state
);
271 def_state
->where_defined
= state
->impl
;
272 def_state
->uses
= _mesa_set_create(def_state
, _mesa_hash_pointer
,
273 _mesa_key_pointer_equal
);
274 def_state
->if_uses
= _mesa_set_create(def_state
, _mesa_hash_pointer
,
275 _mesa_key_pointer_equal
);
276 _mesa_hash_table_insert(state
->ssa_defs
, def
, def_state
);
280 validate_dest(nir_dest
*dest
, validate_state
*state
)
283 validate_ssa_def(&dest
->ssa
, state
);
285 validate_reg_dest(&dest
->reg
, state
);
289 validate_alu_dest(nir_alu_instr
*instr
, validate_state
*state
)
291 nir_alu_dest
*dest
= &instr
->dest
;
294 dest
->dest
.is_ssa
? dest
->dest
.ssa
.num_components
295 : dest
->dest
.reg
.reg
->num_components
;
296 bool is_packed
= !dest
->dest
.is_ssa
&& dest
->dest
.reg
.reg
->is_packed
;
298 * validate that the instruction doesn't write to components not in the
301 validate_assert(state
, is_packed
|| !(dest
->write_mask
& ~((1 << dest_size
) - 1)));
303 /* validate that saturate is only ever used on instructions with
304 * destinations of type float
306 nir_alu_instr
*alu
= nir_instr_as_alu(state
->instr
);
307 validate_assert(state
, nir_op_infos
[alu
->op
].output_type
== nir_type_float
||
310 unsigned bit_size
= dest
->dest
.is_ssa
? dest
->dest
.ssa
.bit_size
311 : dest
->dest
.reg
.reg
->bit_size
;
312 nir_alu_type type
= nir_op_infos
[instr
->op
].output_type
;
314 /* 8-bit float isn't a thing */
315 if (nir_alu_type_get_base_type(type
) == nir_type_float
)
316 validate_assert(state
, bit_size
== 16 || bit_size
== 32 || bit_size
== 64);
318 validate_assert(state
, nir_alu_type_get_type_size(type
) == 0 ||
319 nir_alu_type_get_type_size(type
) == bit_size
);
321 validate_dest(&dest
->dest
, state
);
325 validate_alu_instr(nir_alu_instr
*instr
, validate_state
*state
)
327 validate_assert(state
, instr
->op
< nir_num_opcodes
);
329 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++) {
330 validate_alu_src(instr
, i
, state
);
333 validate_alu_dest(instr
, state
);
337 validate_deref_chain(nir_deref
*deref
, validate_state
*state
)
339 validate_assert(state
, deref
->child
== NULL
|| ralloc_parent(deref
->child
) == deref
);
341 nir_deref
*parent
= NULL
;
342 while (deref
!= NULL
) {
343 switch (deref
->deref_type
) {
344 case nir_deref_type_array
:
345 validate_assert(state
, deref
->type
== glsl_get_array_element(parent
->type
));
346 if (nir_deref_as_array(deref
)->deref_array_type
==
347 nir_deref_array_type_indirect
)
348 validate_src(&nir_deref_as_array(deref
)->indirect
, state
);
351 case nir_deref_type_struct
:
352 validate_assert(state
, deref
->type
==
353 glsl_get_struct_field(parent
->type
,
354 nir_deref_as_struct(deref
)->index
));
357 case nir_deref_type_var
:
361 validate_assert(state
, !"Invalid deref type");
366 deref
= deref
->child
;
371 validate_var_use(nir_variable
*var
, validate_state
*state
)
373 if (var
->data
.mode
== nir_var_local
) {
374 struct hash_entry
*entry
= _mesa_hash_table_search(state
->var_defs
, var
);
376 validate_assert(state
, entry
);
377 validate_assert(state
, (nir_function_impl
*) entry
->data
== state
->impl
);
382 validate_deref_var(void *parent_mem_ctx
, nir_deref_var
*deref
, validate_state
*state
)
384 validate_assert(state
, deref
!= NULL
);
385 validate_assert(state
, ralloc_parent(deref
) == parent_mem_ctx
);
386 validate_assert(state
, deref
->deref
.type
== deref
->var
->type
);
388 validate_var_use(deref
->var
, state
);
390 validate_deref_chain(&deref
->deref
, state
);
394 validate_intrinsic_instr(nir_intrinsic_instr
*instr
, validate_state
*state
)
396 unsigned num_srcs
= nir_intrinsic_infos
[instr
->intrinsic
].num_srcs
;
397 for (unsigned i
= 0; i
< num_srcs
; i
++) {
398 unsigned components_read
=
399 nir_intrinsic_infos
[instr
->intrinsic
].src_components
[i
];
400 if (components_read
== 0)
401 components_read
= instr
->num_components
;
403 validate_assert(state
, components_read
> 0);
405 if (instr
->src
[i
].is_ssa
) {
406 validate_assert(state
, components_read
<= instr
->src
[i
].ssa
->num_components
);
407 } else if (!instr
->src
[i
].reg
.reg
->is_packed
) {
408 validate_assert(state
, components_read
<= instr
->src
[i
].reg
.reg
->num_components
);
411 validate_src(&instr
->src
[i
], state
);
414 unsigned num_vars
= nir_intrinsic_infos
[instr
->intrinsic
].num_variables
;
415 for (unsigned i
= 0; i
< num_vars
; i
++) {
416 validate_deref_var(instr
, instr
->variables
[i
], state
);
419 if (nir_intrinsic_infos
[instr
->intrinsic
].has_dest
) {
420 unsigned components_written
=
421 nir_intrinsic_infos
[instr
->intrinsic
].dest_components
;
422 if (components_written
== 0)
423 components_written
= instr
->num_components
;
425 validate_assert(state
, components_written
> 0);
427 if (instr
->dest
.is_ssa
) {
428 validate_assert(state
, components_written
<= instr
->dest
.ssa
.num_components
);
429 } else if (!instr
->dest
.reg
.reg
->is_packed
) {
430 validate_assert(state
, components_written
<= instr
->dest
.reg
.reg
->num_components
);
433 validate_dest(&instr
->dest
, state
);
436 switch (instr
->intrinsic
) {
437 case nir_intrinsic_load_var
: {
438 const struct glsl_type
*type
=
439 nir_deref_tail(&instr
->variables
[0]->deref
)->type
;
440 validate_assert(state
, glsl_type_is_vector_or_scalar(type
) ||
441 (instr
->variables
[0]->var
->data
.mode
== nir_var_uniform
&&
442 glsl_get_base_type(type
) == GLSL_TYPE_SUBROUTINE
));
443 validate_assert(state
, instr
->num_components
== glsl_get_vector_elements(type
));
446 case nir_intrinsic_store_var
: {
447 const struct glsl_type
*type
=
448 nir_deref_tail(&instr
->variables
[0]->deref
)->type
;
449 validate_assert(state
, glsl_type_is_vector_or_scalar(type
) ||
450 (instr
->variables
[0]->var
->data
.mode
== nir_var_uniform
&&
451 glsl_get_base_type(type
) == GLSL_TYPE_SUBROUTINE
));
452 validate_assert(state
, instr
->num_components
== glsl_get_vector_elements(type
));
453 validate_assert(state
, instr
->variables
[0]->var
->data
.mode
!= nir_var_shader_in
&&
454 instr
->variables
[0]->var
->data
.mode
!= nir_var_uniform
&&
455 instr
->variables
[0]->var
->data
.mode
!= nir_var_shader_storage
);
456 validate_assert(state
, (nir_intrinsic_write_mask(instr
) & ~((1 << instr
->num_components
) - 1)) == 0);
459 case nir_intrinsic_copy_var
:
460 validate_assert(state
, nir_deref_tail(&instr
->variables
[0]->deref
)->type
==
461 nir_deref_tail(&instr
->variables
[1]->deref
)->type
);
462 validate_assert(state
, instr
->variables
[0]->var
->data
.mode
!= nir_var_shader_in
&&
463 instr
->variables
[0]->var
->data
.mode
!= nir_var_uniform
&&
464 instr
->variables
[0]->var
->data
.mode
!= nir_var_shader_storage
);
472 validate_tex_instr(nir_tex_instr
*instr
, validate_state
*state
)
474 bool src_type_seen
[nir_num_tex_src_types
];
475 for (unsigned i
= 0; i
< nir_num_tex_src_types
; i
++)
476 src_type_seen
[i
] = false;
478 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
479 validate_assert(state
, !src_type_seen
[instr
->src
[i
].src_type
]);
480 src_type_seen
[instr
->src
[i
].src_type
] = true;
481 validate_src(&instr
->src
[i
].src
, state
);
484 if (instr
->texture
!= NULL
)
485 validate_deref_var(instr
, instr
->texture
, state
);
487 if (instr
->sampler
!= NULL
)
488 validate_deref_var(instr
, instr
->sampler
, state
);
490 validate_dest(&instr
->dest
, state
);
494 validate_call_instr(nir_call_instr
*instr
, validate_state
*state
)
496 if (instr
->return_deref
== NULL
) {
497 validate_assert(state
, glsl_type_is_void(instr
->callee
->return_type
));
499 validate_assert(state
, instr
->return_deref
->deref
.type
== instr
->callee
->return_type
);
500 validate_deref_var(instr
, instr
->return_deref
, state
);
503 validate_assert(state
, instr
->num_params
== instr
->callee
->num_params
);
505 for (unsigned i
= 0; i
< instr
->num_params
; i
++) {
506 validate_assert(state
, instr
->callee
->params
[i
].type
== instr
->params
[i
]->deref
.type
);
507 validate_deref_var(instr
, instr
->params
[i
], state
);
512 validate_load_const_instr(nir_load_const_instr
*instr
, validate_state
*state
)
514 validate_ssa_def(&instr
->def
, state
);
518 validate_ssa_undef_instr(nir_ssa_undef_instr
*instr
, validate_state
*state
)
520 validate_ssa_def(&instr
->def
, state
);
524 validate_phi_instr(nir_phi_instr
*instr
, validate_state
*state
)
527 * don't validate the sources until we get to them from their predecessor
528 * basic blocks, to avoid validating an SSA use before its definition.
531 validate_dest(&instr
->dest
, state
);
533 exec_list_validate(&instr
->srcs
);
534 validate_assert(state
, exec_list_length(&instr
->srcs
) ==
535 state
->block
->predecessors
->entries
);
539 validate_instr(nir_instr
*instr
, validate_state
*state
)
541 validate_assert(state
, instr
->block
== state
->block
);
543 state
->instr
= instr
;
545 switch (instr
->type
) {
546 case nir_instr_type_alu
:
547 validate_alu_instr(nir_instr_as_alu(instr
), state
);
550 case nir_instr_type_call
:
551 validate_call_instr(nir_instr_as_call(instr
), state
);
554 case nir_instr_type_intrinsic
:
555 validate_intrinsic_instr(nir_instr_as_intrinsic(instr
), state
);
558 case nir_instr_type_tex
:
559 validate_tex_instr(nir_instr_as_tex(instr
), state
);
562 case nir_instr_type_load_const
:
563 validate_load_const_instr(nir_instr_as_load_const(instr
), state
);
566 case nir_instr_type_phi
:
567 validate_phi_instr(nir_instr_as_phi(instr
), state
);
570 case nir_instr_type_ssa_undef
:
571 validate_ssa_undef_instr(nir_instr_as_ssa_undef(instr
), state
);
574 case nir_instr_type_jump
:
578 validate_assert(state
, !"Invalid ALU instruction type");
586 validate_phi_src(nir_phi_instr
*instr
, nir_block
*pred
, validate_state
*state
)
588 state
->instr
= &instr
->instr
;
590 validate_assert(state
, instr
->dest
.is_ssa
);
592 exec_list_validate(&instr
->srcs
);
593 nir_foreach_phi_src(src
, instr
) {
594 if (src
->pred
== pred
) {
595 validate_assert(state
, src
->src
.is_ssa
);
596 validate_assert(state
, src
->src
.ssa
->num_components
==
597 instr
->dest
.ssa
.num_components
);
599 validate_src(&src
->src
, state
);
609 validate_phi_srcs(nir_block
*block
, nir_block
*succ
, validate_state
*state
)
611 nir_foreach_instr(instr
, succ
) {
612 if (instr
->type
!= nir_instr_type_phi
)
615 validate_phi_src(nir_instr_as_phi(instr
), block
, state
);
619 static void validate_cf_node(nir_cf_node
*node
, validate_state
*state
);
622 validate_block(nir_block
*block
, validate_state
*state
)
624 validate_assert(state
, block
->cf_node
.parent
== state
->parent_node
);
626 state
->block
= block
;
628 exec_list_validate(&block
->instr_list
);
629 nir_foreach_instr(instr
, block
) {
630 if (instr
->type
== nir_instr_type_phi
) {
631 validate_assert(state
, instr
== nir_block_first_instr(block
) ||
632 nir_instr_prev(instr
)->type
== nir_instr_type_phi
);
635 if (instr
->type
== nir_instr_type_jump
) {
636 validate_assert(state
, instr
== nir_block_last_instr(block
));
639 validate_instr(instr
, state
);
642 validate_assert(state
, block
->successors
[0] != NULL
);
643 validate_assert(state
, block
->successors
[0] != block
->successors
[1]);
645 for (unsigned i
= 0; i
< 2; i
++) {
646 if (block
->successors
[i
] != NULL
) {
647 struct set_entry
*entry
=
648 _mesa_set_search(block
->successors
[i
]->predecessors
, block
);
649 validate_assert(state
, entry
);
651 validate_phi_srcs(block
, block
->successors
[i
], state
);
655 struct set_entry
*entry
;
656 set_foreach(block
->predecessors
, entry
) {
657 const nir_block
*pred
= entry
->key
;
658 validate_assert(state
, pred
->successors
[0] == block
||
659 pred
->successors
[1] == block
);
662 if (!exec_list_is_empty(&block
->instr_list
) &&
663 nir_block_last_instr(block
)->type
== nir_instr_type_jump
) {
664 validate_assert(state
, block
->successors
[1] == NULL
);
665 nir_jump_instr
*jump
= nir_instr_as_jump(nir_block_last_instr(block
));
666 switch (jump
->type
) {
667 case nir_jump_break
: {
669 nir_cf_node_as_block(nir_cf_node_next(&state
->loop
->cf_node
));
670 validate_assert(state
, block
->successors
[0] == after
);
674 case nir_jump_continue
: {
676 nir_cf_node_as_block(nir_loop_first_cf_node(state
->loop
));
677 validate_assert(state
, block
->successors
[0] == first
);
681 case nir_jump_return
:
682 validate_assert(state
, block
->successors
[0] == state
->impl
->end_block
);
686 unreachable("bad jump type");
689 nir_cf_node
*next
= nir_cf_node_next(&block
->cf_node
);
691 switch (state
->parent_node
->type
) {
692 case nir_cf_node_loop
: {
694 nir_cf_node_as_block(nir_loop_first_cf_node(state
->loop
));
695 validate_assert(state
, block
->successors
[0] == first
);
696 /* due to the hack for infinite loops, block->successors[1] may
697 * point to the block after the loop.
702 case nir_cf_node_if
: {
704 nir_cf_node_as_block(nir_cf_node_next(state
->parent_node
));
705 validate_assert(state
, block
->successors
[0] == after
);
706 validate_assert(state
, block
->successors
[1] == NULL
);
710 case nir_cf_node_function
:
711 validate_assert(state
, block
->successors
[0] == state
->impl
->end_block
);
712 validate_assert(state
, block
->successors
[1] == NULL
);
716 unreachable("unknown control flow node type");
719 if (next
->type
== nir_cf_node_if
) {
720 nir_if
*if_stmt
= nir_cf_node_as_if(next
);
721 validate_assert(state
, &block
->successors
[0]->cf_node
==
722 nir_if_first_then_node(if_stmt
));
723 validate_assert(state
, &block
->successors
[1]->cf_node
==
724 nir_if_first_else_node(if_stmt
));
726 validate_assert(state
, next
->type
== nir_cf_node_loop
);
727 nir_loop
*loop
= nir_cf_node_as_loop(next
);
728 validate_assert(state
, &block
->successors
[0]->cf_node
==
729 nir_loop_first_cf_node(loop
));
730 validate_assert(state
, block
->successors
[1] == NULL
);
737 validate_if(nir_if
*if_stmt
, validate_state
*state
)
739 state
->if_stmt
= if_stmt
;
741 validate_assert(state
, !exec_node_is_head_sentinel(if_stmt
->cf_node
.node
.prev
));
742 nir_cf_node
*prev_node
= nir_cf_node_prev(&if_stmt
->cf_node
);
743 validate_assert(state
, prev_node
->type
== nir_cf_node_block
);
745 validate_assert(state
, !exec_node_is_tail_sentinel(if_stmt
->cf_node
.node
.next
));
746 nir_cf_node
*next_node
= nir_cf_node_next(&if_stmt
->cf_node
);
747 validate_assert(state
, next_node
->type
== nir_cf_node_block
);
749 validate_src(&if_stmt
->condition
, state
);
751 validate_assert(state
, !exec_list_is_empty(&if_stmt
->then_list
));
752 validate_assert(state
, !exec_list_is_empty(&if_stmt
->else_list
));
754 nir_cf_node
*old_parent
= state
->parent_node
;
755 state
->parent_node
= &if_stmt
->cf_node
;
757 exec_list_validate(&if_stmt
->then_list
);
758 foreach_list_typed(nir_cf_node
, cf_node
, node
, &if_stmt
->then_list
) {
759 validate_cf_node(cf_node
, state
);
762 exec_list_validate(&if_stmt
->else_list
);
763 foreach_list_typed(nir_cf_node
, cf_node
, node
, &if_stmt
->else_list
) {
764 validate_cf_node(cf_node
, state
);
767 state
->parent_node
= old_parent
;
768 state
->if_stmt
= NULL
;
772 validate_loop(nir_loop
*loop
, validate_state
*state
)
774 validate_assert(state
, !exec_node_is_head_sentinel(loop
->cf_node
.node
.prev
));
775 nir_cf_node
*prev_node
= nir_cf_node_prev(&loop
->cf_node
);
776 validate_assert(state
, prev_node
->type
== nir_cf_node_block
);
778 validate_assert(state
, !exec_node_is_tail_sentinel(loop
->cf_node
.node
.next
));
779 nir_cf_node
*next_node
= nir_cf_node_next(&loop
->cf_node
);
780 validate_assert(state
, next_node
->type
== nir_cf_node_block
);
782 validate_assert(state
, !exec_list_is_empty(&loop
->body
));
784 nir_cf_node
*old_parent
= state
->parent_node
;
785 state
->parent_node
= &loop
->cf_node
;
786 nir_loop
*old_loop
= state
->loop
;
789 exec_list_validate(&loop
->body
);
790 foreach_list_typed(nir_cf_node
, cf_node
, node
, &loop
->body
) {
791 validate_cf_node(cf_node
, state
);
794 state
->parent_node
= old_parent
;
795 state
->loop
= old_loop
;
799 validate_cf_node(nir_cf_node
*node
, validate_state
*state
)
801 validate_assert(state
, node
->parent
== state
->parent_node
);
803 switch (node
->type
) {
804 case nir_cf_node_block
:
805 validate_block(nir_cf_node_as_block(node
), state
);
809 validate_if(nir_cf_node_as_if(node
), state
);
812 case nir_cf_node_loop
:
813 validate_loop(nir_cf_node_as_loop(node
), state
);
817 unreachable("Invalid CF node type");
822 prevalidate_reg_decl(nir_register
*reg
, bool is_global
, validate_state
*state
)
824 validate_assert(state
, reg
->is_global
== is_global
);
827 validate_assert(state
, reg
->index
< state
->shader
->reg_alloc
);
829 validate_assert(state
, reg
->index
< state
->impl
->reg_alloc
);
830 validate_assert(state
, !BITSET_TEST(state
->regs_found
, reg
->index
));
831 BITSET_SET(state
->regs_found
, reg
->index
);
833 list_validate(®
->uses
);
834 list_validate(®
->defs
);
835 list_validate(®
->if_uses
);
837 reg_validate_state
*reg_state
= ralloc(state
->regs
, reg_validate_state
);
838 reg_state
->uses
= _mesa_set_create(reg_state
, _mesa_hash_pointer
,
839 _mesa_key_pointer_equal
);
840 reg_state
->if_uses
= _mesa_set_create(reg_state
, _mesa_hash_pointer
,
841 _mesa_key_pointer_equal
);
842 reg_state
->defs
= _mesa_set_create(reg_state
, _mesa_hash_pointer
,
843 _mesa_key_pointer_equal
);
845 reg_state
->where_defined
= is_global
? NULL
: state
->impl
;
847 _mesa_hash_table_insert(state
->regs
, reg
, reg_state
);
851 postvalidate_reg_decl(nir_register
*reg
, validate_state
*state
)
853 struct hash_entry
*entry
= _mesa_hash_table_search(state
->regs
, reg
);
855 reg_validate_state
*reg_state
= (reg_validate_state
*) entry
->data
;
857 nir_foreach_use(src
, reg
) {
858 struct set_entry
*entry
= _mesa_set_search(reg_state
->uses
, src
);
859 validate_assert(state
, entry
);
860 _mesa_set_remove(reg_state
->uses
, entry
);
863 if (reg_state
->uses
->entries
!= 0) {
864 printf("extra entries in register uses:\n");
865 struct set_entry
*entry
;
866 set_foreach(reg_state
->uses
, entry
)
867 printf("%p\n", entry
->key
);
872 nir_foreach_if_use(src
, reg
) {
873 struct set_entry
*entry
= _mesa_set_search(reg_state
->if_uses
, src
);
874 validate_assert(state
, entry
);
875 _mesa_set_remove(reg_state
->if_uses
, entry
);
878 if (reg_state
->if_uses
->entries
!= 0) {
879 printf("extra entries in register if_uses:\n");
880 struct set_entry
*entry
;
881 set_foreach(reg_state
->if_uses
, entry
)
882 printf("%p\n", entry
->key
);
887 nir_foreach_def(src
, reg
) {
888 struct set_entry
*entry
= _mesa_set_search(reg_state
->defs
, src
);
889 validate_assert(state
, entry
);
890 _mesa_set_remove(reg_state
->defs
, entry
);
893 if (reg_state
->defs
->entries
!= 0) {
894 printf("extra entries in register defs:\n");
895 struct set_entry
*entry
;
896 set_foreach(reg_state
->defs
, entry
)
897 printf("%p\n", entry
->key
);
904 validate_var_decl(nir_variable
*var
, bool is_global
, validate_state
*state
)
906 validate_assert(state
, is_global
== nir_variable_is_global(var
));
908 /* Must have exactly one mode set */
909 validate_assert(state
, util_bitcount(var
->data
.mode
) == 1);
912 * TODO validate some things ir_validate.cpp does (requires more GLSL type
917 _mesa_hash_table_insert(state
->var_defs
, var
, state
->impl
);
922 postvalidate_ssa_def(nir_ssa_def
*def
, void *void_state
)
924 validate_state
*state
= void_state
;
926 struct hash_entry
*entry
= _mesa_hash_table_search(state
->ssa_defs
, def
);
927 ssa_def_validate_state
*def_state
= (ssa_def_validate_state
*)entry
->data
;
929 nir_foreach_use(src
, def
) {
930 struct set_entry
*entry
= _mesa_set_search(def_state
->uses
, src
);
931 validate_assert(state
, entry
);
932 _mesa_set_remove(def_state
->uses
, entry
);
935 if (def_state
->uses
->entries
!= 0) {
936 printf("extra entries in register uses:\n");
937 struct set_entry
*entry
;
938 set_foreach(def_state
->uses
, entry
)
939 printf("%p\n", entry
->key
);
944 nir_foreach_if_use(src
, def
) {
945 struct set_entry
*entry
= _mesa_set_search(def_state
->if_uses
, src
);
946 validate_assert(state
, entry
);
947 _mesa_set_remove(def_state
->if_uses
, entry
);
950 if (def_state
->if_uses
->entries
!= 0) {
951 printf("extra entries in register uses:\n");
952 struct set_entry
*entry
;
953 set_foreach(def_state
->if_uses
, entry
)
954 printf("%p\n", entry
->key
);
963 validate_function_impl(nir_function_impl
*impl
, validate_state
*state
)
965 validate_assert(state
, impl
->function
->impl
== impl
);
966 validate_assert(state
, impl
->cf_node
.parent
== NULL
);
968 validate_assert(state
, impl
->num_params
== impl
->function
->num_params
);
969 for (unsigned i
= 0; i
< impl
->num_params
; i
++) {
970 validate_assert(state
, impl
->params
[i
]->type
== impl
->function
->params
[i
].type
);
971 validate_assert(state
, impl
->params
[i
]->data
.mode
== nir_var_param
);
972 validate_assert(state
, impl
->params
[i
]->data
.location
== i
);
973 validate_var_decl(impl
->params
[i
], false, state
);
976 if (glsl_type_is_void(impl
->function
->return_type
)) {
977 validate_assert(state
, impl
->return_var
== NULL
);
979 validate_assert(state
, impl
->return_var
->type
== impl
->function
->return_type
);
980 validate_assert(state
, impl
->return_var
->data
.mode
== nir_var_param
);
981 validate_assert(state
, impl
->return_var
->data
.location
== -1);
982 validate_var_decl(impl
->return_var
, false, state
);
985 validate_assert(state
, exec_list_is_empty(&impl
->end_block
->instr_list
));
986 validate_assert(state
, impl
->end_block
->successors
[0] == NULL
);
987 validate_assert(state
, impl
->end_block
->successors
[1] == NULL
);
990 state
->parent_node
= &impl
->cf_node
;
992 exec_list_validate(&impl
->locals
);
993 nir_foreach_variable(var
, &impl
->locals
) {
994 validate_var_decl(var
, false, state
);
997 state
->regs_found
= realloc(state
->regs_found
,
998 BITSET_WORDS(impl
->reg_alloc
) *
999 sizeof(BITSET_WORD
));
1000 memset(state
->regs_found
, 0, BITSET_WORDS(impl
->reg_alloc
) *
1001 sizeof(BITSET_WORD
));
1002 exec_list_validate(&impl
->registers
);
1003 foreach_list_typed(nir_register
, reg
, node
, &impl
->registers
) {
1004 prevalidate_reg_decl(reg
, false, state
);
1007 state
->ssa_defs_found
= realloc(state
->ssa_defs_found
,
1008 BITSET_WORDS(impl
->ssa_alloc
) *
1009 sizeof(BITSET_WORD
));
1010 memset(state
->ssa_defs_found
, 0, BITSET_WORDS(impl
->ssa_alloc
) *
1011 sizeof(BITSET_WORD
));
1012 exec_list_validate(&impl
->body
);
1013 foreach_list_typed(nir_cf_node
, node
, node
, &impl
->body
) {
1014 validate_cf_node(node
, state
);
1017 foreach_list_typed(nir_register
, reg
, node
, &impl
->registers
) {
1018 postvalidate_reg_decl(reg
, state
);
1021 nir_foreach_block(block
, impl
) {
1022 nir_foreach_instr(instr
, block
)
1023 nir_foreach_ssa_def(instr
, postvalidate_ssa_def
, state
);
1028 validate_function(nir_function
*func
, validate_state
*state
)
1030 if (func
->impl
!= NULL
) {
1031 validate_assert(state
, func
->impl
->function
== func
);
1032 validate_function_impl(func
->impl
, state
);
1037 init_validate_state(validate_state
*state
)
1039 state
->regs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
1040 _mesa_key_pointer_equal
);
1041 state
->ssa_defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
1042 _mesa_key_pointer_equal
);
1043 state
->ssa_defs_found
= NULL
;
1044 state
->regs_found
= NULL
;
1045 state
->var_defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
1046 _mesa_key_pointer_equal
);
1051 destroy_validate_state(validate_state
*state
)
1053 _mesa_hash_table_destroy(state
->regs
, NULL
);
1054 _mesa_hash_table_destroy(state
->ssa_defs
, NULL
);
1055 free(state
->ssa_defs_found
);
1056 free(state
->regs_found
);
1057 _mesa_hash_table_destroy(state
->var_defs
, NULL
);
1061 nir_validate_shader(nir_shader
*shader
)
1063 validate_state state
;
1064 init_validate_state(&state
);
1066 state
.shader
= shader
;
1068 exec_list_validate(&shader
->uniforms
);
1069 nir_foreach_variable(var
, &shader
->uniforms
) {
1070 validate_var_decl(var
, true, &state
);
1073 exec_list_validate(&shader
->inputs
);
1074 nir_foreach_variable(var
, &shader
->inputs
) {
1075 validate_var_decl(var
, true, &state
);
1078 exec_list_validate(&shader
->outputs
);
1079 nir_foreach_variable(var
, &shader
->outputs
) {
1080 validate_var_decl(var
, true, &state
);
1083 exec_list_validate(&shader
->shared
);
1084 nir_foreach_variable(var
, &shader
->shared
) {
1085 validate_var_decl(var
, true, &state
);
1088 exec_list_validate(&shader
->globals
);
1089 nir_foreach_variable(var
, &shader
->globals
) {
1090 validate_var_decl(var
, true, &state
);
1093 exec_list_validate(&shader
->system_values
);
1094 nir_foreach_variable(var
, &shader
->system_values
) {
1095 validate_var_decl(var
, true, &state
);
1098 state
.regs_found
= realloc(state
.regs_found
,
1099 BITSET_WORDS(shader
->reg_alloc
) *
1100 sizeof(BITSET_WORD
));
1101 memset(state
.regs_found
, 0, BITSET_WORDS(shader
->reg_alloc
) *
1102 sizeof(BITSET_WORD
));
1103 exec_list_validate(&shader
->registers
);
1104 foreach_list_typed(nir_register
, reg
, node
, &shader
->registers
) {
1105 prevalidate_reg_decl(reg
, true, &state
);
1108 exec_list_validate(&shader
->functions
);
1109 foreach_list_typed(nir_function
, func
, node
, &shader
->functions
) {
1110 validate_function(func
, &state
);
1113 foreach_list_typed(nir_register
, reg
, node
, &shader
->registers
) {
1114 postvalidate_reg_decl(reg
, &state
);
1117 destroy_validate_state(&state
);