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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->get_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_comparitor
) {
182 s
= this->shadow_comparitor
->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
:
199 s
= this->lod_info
.bias
->accept(v
);
200 if (s
!= visit_continue
)
201 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
206 s
= this->lod_info
.lod
->accept(v
);
207 if (s
!= visit_continue
)
208 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
211 s
= this->lod_info
.sample_index
->accept(v
);
212 if (s
!= visit_continue
)
213 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
216 s
= this->lod_info
.grad
.dPdx
->accept(v
);
217 if (s
!= visit_continue
)
218 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
220 s
= this->lod_info
.grad
.dPdy
->accept(v
);
221 if (s
!= visit_continue
)
222 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
225 s
= this->lod_info
.component
->accept(v
);
226 if (s
!= visit_continue
)
227 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
231 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
236 ir_swizzle::accept(ir_hierarchical_visitor
*v
)
238 ir_visitor_status s
= v
->visit_enter(this);
239 if (s
!= visit_continue
)
240 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
242 s
= this->val
->accept(v
);
243 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
248 ir_dereference_variable::accept(ir_hierarchical_visitor
*v
)
250 return v
->visit(this);
255 ir_dereference_array::accept(ir_hierarchical_visitor
*v
)
257 ir_visitor_status s
= v
->visit_enter(this);
258 if (s
!= visit_continue
)
259 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
261 /* The array index is not the target of the assignment, so clear the
262 * 'in_assignee' flag. Restore it after returning from the array index.
264 const bool was_in_assignee
= v
->in_assignee
;
265 v
->in_assignee
= false;
266 s
= this->array_index
->accept(v
);
267 v
->in_assignee
= was_in_assignee
;
269 if (s
!= visit_continue
)
270 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
272 s
= this->array
->accept(v
);
273 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
278 ir_dereference_record::accept(ir_hierarchical_visitor
*v
)
280 ir_visitor_status s
= v
->visit_enter(this);
281 if (s
!= visit_continue
)
282 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
284 s
= this->record
->accept(v
);
285 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
290 ir_assignment::accept(ir_hierarchical_visitor
*v
)
292 ir_visitor_status s
= v
->visit_enter(this);
293 if (s
!= visit_continue
)
294 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
296 v
->in_assignee
= true;
297 s
= this->lhs
->accept(v
);
298 v
->in_assignee
= false;
299 if (s
!= visit_continue
)
300 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
302 s
= this->rhs
->accept(v
);
303 if (s
!= visit_continue
)
304 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
307 s
= this->condition
->accept(v
);
309 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
314 ir_constant::accept(ir_hierarchical_visitor
*v
)
316 return v
->visit(this);
321 ir_call::accept(ir_hierarchical_visitor
*v
)
323 ir_visitor_status s
= v
->visit_enter(this);
324 if (s
!= visit_continue
)
325 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
327 if (this->return_deref
!= NULL
) {
328 v
->in_assignee
= true;
329 s
= this->return_deref
->accept(v
);
330 v
->in_assignee
= false;
331 if (s
!= visit_continue
)
332 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
335 s
= visit_list_elements(v
, &this->actual_parameters
, false);
339 return v
->visit_leave(this);
344 ir_return::accept(ir_hierarchical_visitor
*v
)
346 ir_visitor_status s
= v
->visit_enter(this);
347 if (s
!= visit_continue
)
348 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
350 ir_rvalue
*val
= this->get_value();
353 if (s
!= visit_continue
)
354 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
357 return v
->visit_leave(this);
362 ir_discard::accept(ir_hierarchical_visitor
*v
)
364 ir_visitor_status s
= v
->visit_enter(this);
365 if (s
!= visit_continue
)
366 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
368 if (this->condition
!= NULL
) {
369 s
= this->condition
->accept(v
);
370 if (s
!= visit_continue
)
371 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
374 return v
->visit_leave(this);
379 ir_if::accept(ir_hierarchical_visitor
*v
)
381 ir_visitor_status s
= v
->visit_enter(this);
382 if (s
!= visit_continue
)
383 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
385 s
= this->condition
->accept(v
);
386 if (s
!= visit_continue
)
387 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
389 if (s
!= visit_continue_with_parent
) {
390 s
= visit_list_elements(v
, &this->then_instructions
);
395 if (s
!= visit_continue_with_parent
) {
396 s
= visit_list_elements(v
, &this->else_instructions
);
401 return v
->visit_leave(this);
405 ir_emit_vertex::accept(ir_hierarchical_visitor
*v
)
407 ir_visitor_status s
= v
->visit_enter(this);
408 if (s
!= visit_continue
)
409 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
411 s
= this->stream
->accept(v
);
412 if (s
!= visit_continue
)
413 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
415 return (s
== visit_stop
) ? s
: v
->visit_leave(this);
420 ir_end_primitive::accept(ir_hierarchical_visitor
*v
)
422 ir_visitor_status s
= v
->visit_enter(this);
423 if (s
!= visit_continue
)
424 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
426 s
= this->stream
->accept(v
);
427 if (s
!= visit_continue
)
428 return (s
== visit_continue_with_parent
) ? visit_continue
: s
;
430 return (s
== visit_stop
) ? s
: v
->visit_leave(this);