0,0 → 1,69 |
/* |
* 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. |
*/ |
|
/** |
* \file ir_variable_refcount.h |
* |
* Provides a visitor which produces a list of variables referenced, |
* how many times they were referenced and assigned, and whether they |
* were defined in the scope. |
*/ |
|
#include "ir.h" |
#include "ir_visitor.h" |
#include "glsl_types.h" |
|
class ir_variable_refcount_entry |
{ |
public: |
ir_variable_refcount_entry(ir_variable *var); |
|
ir_variable *var; /* The key: the variable's pointer. */ |
ir_assignment *assign; /* An assignment to the variable, if any */ |
|
/** Number of times the variable is referenced, including assignments. */ |
unsigned referenced_count; |
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/** Number of times the variable is assigned. */ |
unsigned assigned_count; |
|
bool declaration; /* If the variable had a decl in the instruction stream */ |
}; |
|
class ir_variable_refcount_visitor : public ir_hierarchical_visitor { |
public: |
ir_variable_refcount_visitor(void); |
~ir_variable_refcount_visitor(void); |
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virtual ir_visitor_status visit(ir_variable *); |
virtual ir_visitor_status visit(ir_dereference_variable *); |
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virtual ir_visitor_status visit_enter(ir_function_signature *); |
virtual ir_visitor_status visit_leave(ir_assignment *); |
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ir_variable_refcount_entry *get_variable_entry(ir_variable *var); |
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struct hash_table *ht; |
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void *mem_ctx; |
}; |