e3b5200496
Exporting a publicly visible class with a generic name like "variable_entry" via ir_variable_refcount.h is kind of mean. Many IR transformers would like to define their own "variable_entry" class. If they accidentally include this header, the compiler/linker may get confused and try to instantiate the wrong variable_entry class, leading to bizarre runtime crashes. The hope is that renaming this one will allow .cpp files to safely declare and use their own file-scope "variable_entry" classes. This avoids crashes caused by converting src/glsl to automake. Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-and-tested-by: Matt Turner <mattst88@gmail.com> Reviewed-by: Eric Anholt <eric@anholt.net>
79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
/*
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* Copyright © 2010 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file ir_variable_refcount.h
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*
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* Provides a visitor which produces a list of variables referenced,
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* how many times they were referenced and assigned, and whether they
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* were defined in the scope.
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*/
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#include "ir.h"
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#include "ir_visitor.h"
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#include "glsl_types.h"
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class ir_variable_refcount_entry : public exec_node
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{
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public:
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ir_variable_refcount_entry(ir_variable *var);
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ir_variable *var; /* The key: the variable's pointer. */
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ir_assignment *assign; /* An assignment to the variable, if any */
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/** Number of times the variable is referenced, including assignments. */
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unsigned referenced_count;
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/** Number of times the variable is assigned. */
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unsigned assigned_count;
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bool declaration; /* If the variable had a decl in the instruction stream */
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};
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class ir_variable_refcount_visitor : public ir_hierarchical_visitor {
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public:
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ir_variable_refcount_visitor(void)
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{
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this->mem_ctx = ralloc_context(NULL);
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this->variable_list.make_empty();
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}
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~ir_variable_refcount_visitor(void)
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{
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ralloc_free(this->mem_ctx);
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}
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virtual ir_visitor_status visit(ir_variable *);
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virtual ir_visitor_status visit(ir_dereference_variable *);
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virtual ir_visitor_status visit_enter(ir_function_signature *);
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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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/* List of ir_variable_refcount_entry */
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exec_list variable_list;
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void *mem_ctx;
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};
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