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27 * \file ir_hv_accept.cpp
28 * Implementations of all hierarchical visitor accept methods for IR
33 * Process a list of nodes using a hierarchical vistor.
35 * If statement_list is true (the default), this is a list of statements, so
36 * v->base_ir will be set to point to each statement just before iterating
37 * over it, and restored after iteration is complete. If statement_list is
38 * false, this is a list that appears inside a statement (e.g. a parameter
39 * list), so v->base_ir will be left alone.
42 * This function will operate correctly if a node being processed is removed
43 * from the list. However, if nodes are added to the list after the node being
44 * processed, some of the added nodes may not be processed.
47 visit_list_elements(ir_hierarchical_visitor
*v
, exec_list
*l
,
50 ir_instruction
*prev_base_ir
= v
->base_ir
;
52 foreach_in_list_safe(ir_instruction
, ir
, l
) {
55 ir_visitor_status s
= ir
->accept(v
);
57 if (s
!= visit_continue
)
61 v
->base_ir
= prev_base_ir
;
63 return visit_continue
;
68 ir_rvalue::accept(ir_hierarchical_visitor
*v
)
70 return v
->visit(this);
75 ir_variable::accept(ir_hierarchical_visitor
*v
)
77 return v
->visit(this);
82 ir_loop::accept(ir_hierarchical_visitor
*v
)
84 ir_visitor_status s
= v
->visit_enter(this);
86 if (s
!= visit_continue
)
87 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
89 s
= visit_list_elements(v
, &this->body_instructions
);
93 return v
->visit_leave(this);
98 ir_loop_jump::accept(ir_hierarchical_visitor
*v
)
100 return v
->visit(this);
105 ir_function_signature::accept(ir_hierarchical_visitor
*v
)
107 ir_visitor_status s
= v
->visit_enter(this);
108 if (s
!= visit_continue
)
109 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
111 s
= visit_list_elements(v
, &this->parameters
);
115 s
= visit_list_elements(v
, &this->body
);
116 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
121 ir_function::accept(ir_hierarchical_visitor
*v
)
123 ir_visitor_status s
= v
->visit_enter(this);
124 if (s
!= visit_continue
)
125 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
127 s
= visit_list_elements(v
, &this->signatures
, false);
128 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
133 ir_expression::accept(ir_hierarchical_visitor
*v
)
135 ir_visitor_status s
= v
->visit_enter(this);
137 if (s
!= visit_continue
)
138 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
140 for (unsigned i
= 0; i
< this->num_operands
; i
++) {
141 switch (this->operands
[i
]->accept(v
)) {
145 case visit_continue_with_parent
:
146 // I wish for Java's labeled break-statement here.
155 return v
->visit_leave(this);
159 ir_texture::accept(ir_hierarchical_visitor
*v
)
161 ir_visitor_status s
= v
->visit_enter(this);
162 if (s
!= visit_continue
)
163 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
165 s
= this->sampler
->accept(v
);
166 if (s
!= visit_continue
)
167 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
169 if (this->coordinate
) {
170 s
= this->coordinate
->accept(v
);
171 if (s
!= visit_continue
)
172 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
175 if (this->projector
) {
176 s
= this->projector
->accept(v
);
177 if (s
!= visit_continue
)
178 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
181 if (this->shadow_comparator
) {
182 s
= this->shadow_comparator
->accept(v
);
183 if (s
!= visit_continue
)
184 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
188 s
= this->offset
->accept(v
);
189 if (s
!= visit_continue
)
190 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
196 case ir_query_levels
:
197 case ir_texture_samples
:
198 case ir_samples_identical
:
201 s
= this->lod_info
.bias
->accept(v
);
202 if (s
!= visit_continue
)
203 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
208 s
= this->lod_info
.lod
->accept(v
);
209 if (s
!= visit_continue
)
210 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
213 s
= this->lod_info
.sample_index
->accept(v
);
214 if (s
!= visit_continue
)
215 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
218 s
= this->lod_info
.grad
.dPdx
->accept(v
);
219 if (s
!= visit_continue
)
220 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
222 s
= this->lod_info
.grad
.dPdy
->accept(v
);
223 if (s
!= visit_continue
)
224 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
227 s
= this->lod_info
.component
->accept(v
);
228 if (s
!= visit_continue
)
229 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
233 assert(s
== visit_continue
);
234 return v
->visit_leave(this);
239 ir_swizzle::accept(ir_hierarchical_visitor
*v
)
241 ir_visitor_status s
= v
->visit_enter(this);
242 if (s
!= visit_continue
)
243 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
245 s
= this->val
->accept(v
);
246 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
251 ir_dereference_variable::accept(ir_hierarchical_visitor
*v
)
253 return v
->visit(this);
258 ir_dereference_array::accept(ir_hierarchical_visitor
*v
)
260 ir_visitor_status s
= v
->visit_enter(this);
261 if (s
!= visit_continue
)
262 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
264 /* The array index is not the target of the assignment, so clear the
265 * 'in_assignee' flag. Restore it after returning from the array index.
267 const bool was_in_assignee
= v
->in_assignee
;
268 v
->in_assignee
= false;
269 s
= this->array_index
->accept(v
);
270 v
->in_assignee
= was_in_assignee
;
272 if (s
!= visit_continue
)
273 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
275 s
= this->array
->accept(v
);
276 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
281 ir_dereference_record::accept(ir_hierarchical_visitor
*v
)
283 ir_visitor_status s
= v
->visit_enter(this);
284 if (s
!= visit_continue
)
285 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
287 s
= this->record
->accept(v
);
288 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
293 ir_assignment::accept(ir_hierarchical_visitor
*v
)
295 ir_visitor_status s
= v
->visit_enter(this);
296 if (s
!= visit_continue
)
297 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
299 v
->in_assignee
= true;
300 s
= this->lhs
->accept(v
);
301 v
->in_assignee
= false;
302 if (s
!= visit_continue
)
303 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
305 s
= this->rhs
->accept(v
);
306 if (s
!= visit_continue
)
307 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
310 s
= this->condition
->accept(v
);
312 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
317 ir_constant::accept(ir_hierarchical_visitor
*v
)
319 return v
->visit(this);
324 ir_call::accept(ir_hierarchical_visitor
*v
)
326 ir_visitor_status s
= v
->visit_enter(this);
327 if (s
!= visit_continue
)
328 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
330 if (this->return_deref
!= NULL
) {
331 v
->in_assignee
= true;
332 s
= this->return_deref
->accept(v
);
333 v
->in_assignee
= false;
334 if (s
!= visit_continue
)
335 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
338 s
= visit_list_elements(v
, &this->actual_parameters
, false);
342 return v
->visit_leave(this);
347 ir_return::accept(ir_hierarchical_visitor
*v
)
349 ir_visitor_status s
= v
->visit_enter(this);
350 if (s
!= visit_continue
)
351 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
353 ir_rvalue
*val
= this->get_value();
356 if (s
!= visit_continue
)
357 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
360 return v
->visit_leave(this);
365 ir_discard::accept(ir_hierarchical_visitor
*v
)
367 ir_visitor_status s
= v
->visit_enter(this);
368 if (s
!= visit_continue
)
369 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
371 if (this->condition
!= NULL
) {
372 s
= this->condition
->accept(v
);
373 if (s
!= visit_continue
)
374 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
377 return v
->visit_leave(this);
382 ir_if::accept(ir_hierarchical_visitor
*v
)
384 ir_visitor_status s
= v
->visit_enter(this);
385 if (s
!= visit_continue
)
386 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
388 s
= this->condition
->accept(v
);
389 if (s
!= visit_continue
)
390 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
392 if (s
!= visit_continue_with_parent
) {
393 s
= visit_list_elements(v
, &this->then_instructions
);
398 if (s
!= visit_continue_with_parent
) {
399 s
= visit_list_elements(v
, &this->else_instructions
);
404 return v
->visit_leave(this);
408 ir_emit_vertex::accept(ir_hierarchical_visitor
*v
)
410 ir_visitor_status s
= v
->visit_enter(this);
411 if (s
!= visit_continue
)
412 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
414 s
= this->stream
->accept(v
);
415 if (s
!= visit_continue
)
416 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
418 assert(s
== visit_continue
);
419 return v
->visit_leave(this);
424 ir_end_primitive::accept(ir_hierarchical_visitor
*v
)
426 ir_visitor_status s
= v
->visit_enter(this);
427 if (s
!= visit_continue
)
428 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
430 s
= this->stream
->accept(v
);
431 if (s
!= visit_continue
)
432 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
434 assert(s
== visit_continue
);
435 return v
->visit_leave(this);
439 ir_barrier::accept(ir_hierarchical_visitor
*v
)
441 return v
->visit(this);