diff options
Diffstat (limited to 'mesalib/src/glsl/ir_hv_accept.cpp')
| -rw-r--r-- | mesalib/src/glsl/ir_hv_accept.cpp | 378 |
1 files changed, 378 insertions, 0 deletions
diff --git a/mesalib/src/glsl/ir_hv_accept.cpp b/mesalib/src/glsl/ir_hv_accept.cpp new file mode 100644 index 000000000..be8b36a7c --- /dev/null +++ b/mesalib/src/glsl/ir_hv_accept.cpp @@ -0,0 +1,378 @@ +/* + * Copyright © 2010 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include "ir.h" + +/** + * \file ir_hv_accept.cpp + * Implementations of all hierarchical visitor accept methods for IR + * instructions. + */ + +/** + * Process a list of nodes using a hierarchical vistor + * + * \warning + * This function will operate correctly if a node being processed is removed + * from the list. However, if nodes are added to the list after the node being + * processed, some of the added nodes may not be processed. + */ +ir_visitor_status +visit_list_elements(ir_hierarchical_visitor *v, exec_list *l) +{ + ir_instruction *prev_base_ir = v->base_ir; + + foreach_list_safe(n, l) { + ir_instruction *const ir = (ir_instruction *) n; + v->base_ir = ir; + ir_visitor_status s = ir->accept(v); + + if (s != visit_continue) + return s; + } + v->base_ir = prev_base_ir; + + return visit_continue; +} + + +ir_visitor_status +ir_variable::accept(ir_hierarchical_visitor *v) +{ + return v->visit(this); +} + + +ir_visitor_status +ir_loop::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = visit_list_elements(v, &this->body_instructions); + if (s == visit_stop) + return s; + + if (s != visit_continue_with_parent) { + if (this->from) { + s = this->from->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + } + + if (this->to) { + s = this->to->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + } + + if (this->increment) { + s = this->increment->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + } + } + + return v->visit_leave(this); +} + + +ir_visitor_status +ir_loop_jump::accept(ir_hierarchical_visitor *v) +{ + return v->visit(this); +} + + +ir_visitor_status +ir_function_signature::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = visit_list_elements(v, &this->parameters); + if (s == visit_stop) + return s; + + s = visit_list_elements(v, &this->body); + return (s == visit_stop) ? s : v->visit_leave(this); +} + + +ir_visitor_status +ir_function::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = visit_list_elements(v, &this->signatures); + return (s == visit_stop) ? s : v->visit_leave(this); +} + + +ir_visitor_status +ir_expression::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + for (unsigned i = 0; i < this->get_num_operands(); i++) { + switch (this->operands[i]->accept(v)) { + case visit_continue: + break; + + case visit_continue_with_parent: + // I wish for Java's labeled break-statement here. + goto done; + + case visit_stop: + return s; + } + } + +done: + return v->visit_leave(this); +} + +ir_visitor_status +ir_texture::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = this->sampler->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = this->coordinate->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + if (this->projector) { + s = this->projector->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + } + + if (this->shadow_comparitor) { + s = this->shadow_comparitor->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + } + + switch (this->op) { + case ir_tex: + break; + case ir_txb: + s = this->lod_info.bias->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + break; + case ir_txl: + case ir_txf: + s = this->lod_info.lod->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + break; + case ir_txd: + s = this->lod_info.grad.dPdx->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = this->lod_info.grad.dPdy->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + break; + } + + return (s == visit_stop) ? s : v->visit_leave(this); +} + + +ir_visitor_status +ir_swizzle::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = this->val->accept(v); + return (s == visit_stop) ? s : v->visit_leave(this); +} + + +ir_visitor_status +ir_dereference_variable::accept(ir_hierarchical_visitor *v) +{ + return v->visit(this); +} + + +ir_visitor_status +ir_dereference_array::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + /* The array index is not the target of the assignment, so clear the + * 'in_assignee' flag. Restore it after returning from the array index. + */ + const bool was_in_assignee = v->in_assignee; + v->in_assignee = false; + s = this->array_index->accept(v); + v->in_assignee = was_in_assignee; + + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = this->array->accept(v); + return (s == visit_stop) ? s : v->visit_leave(this); +} + + +ir_visitor_status +ir_dereference_record::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = this->record->accept(v); + return (s == visit_stop) ? s : v->visit_leave(this); +} + + +ir_visitor_status +ir_assignment::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + v->in_assignee = true; + s = this->lhs->accept(v); + v->in_assignee = false; + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = this->rhs->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + if (this->condition) + s = this->condition->accept(v); + + return (s == visit_stop) ? s : v->visit_leave(this); +} + + +ir_visitor_status +ir_constant::accept(ir_hierarchical_visitor *v) +{ + return v->visit(this); +} + + +ir_visitor_status +ir_call::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = visit_list_elements(v, &this->actual_parameters); + if (s == visit_stop) + return s; + + return v->visit_leave(this); +} + + +ir_visitor_status +ir_return::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + ir_rvalue *val = this->get_value(); + if (val) { + s = val->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + } + + return v->visit_leave(this); +} + + +ir_visitor_status +ir_discard::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + if (this->condition != NULL) { + s = this->condition->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + } + + return v->visit_leave(this); +} + + +ir_visitor_status +ir_if::accept(ir_hierarchical_visitor *v) +{ + ir_visitor_status s = v->visit_enter(this); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + s = this->condition->accept(v); + if (s != visit_continue) + return (s == visit_continue_with_parent) ? visit_continue : s; + + if (s != visit_continue_with_parent) { + s = visit_list_elements(v, &this->then_instructions); + if (s == visit_stop) + return s; + } + + if (s != visit_continue_with_parent) { + s = visit_list_elements(v, &this->else_instructions); + if (s == visit_stop) + return s; + } + + return v->visit_leave(this); +} |