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IR visitor: Add initial version of ir_visitor classes 

The ir_visitor class is the abstract base class for all visitors.
ir_print_visitor contains the beginnings of a concrete visitor class
that will print out an IR sequence in a Lisp / Scheme-like syntax.
This commit is contained in:
Ian Romanick 2010-03-09 16:23:37 -08:00
parent fce1150156
commit 78b51b0fdd
5 changed files with 256 additions and 1 deletions
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3
Makefile.am
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@ -25,7 +25,8 @@ AUTOMAKE_OPTIONS = foreign
bin_PROGRAMS = glsl
glsl_SOURCES = symbol_table.c hash_table.c glsl_types.cpp \
glsl_parser.ypp glsl_lexer.lpp glsl_parser_extras.cpp \
ast_expr.cpp ast_to_hir.cpp ir.cpp hir_field_selection.cpp
ast_expr.cpp ast_to_hir.cpp ir.cpp hir_field_selection.cpp \
ir_print_visitor.cpp
BUILT_SOURCES = glsl_parser.h builtin_types.h

43
ir.h
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@ -22,6 +22,7 @@
*/
#include "list.h"
#include "ir_visitor.h"
struct ir_program {
void *bong_hits;
@ -48,6 +49,8 @@ public:
unsigned mode;
const struct glsl_type *type;
virtual void accept(ir_visitor *) = 0;
protected:
ir_instruction(int mode);
@ -81,6 +84,11 @@ class ir_variable : public ir_instruction {
public:
ir_variable(const struct glsl_type *, const char *);
virtual void accept(ir_visitor *v)
{
v->visit(this);
}
const char *name;
unsigned read_only:1;
@ -96,6 +104,11 @@ class ir_label : public ir_instruction {
public:
ir_label(const char *label);
virtual void accept(ir_visitor *v)
{
v->visit(this);
}
const char *label;
};
@ -105,6 +118,11 @@ class ir_function_signature : public ir_instruction {
public:
ir_function_signature(void);
virtual void accept(ir_visitor *v)
{
v->visit(this);
}
/**
* Function return type.
*
@ -131,6 +149,11 @@ class ir_function : public ir_instruction {
public:
ir_function(void);
virtual void accept(ir_visitor *v)
{
v->visit(this);
}
/**
* Name of the function.
*/
@ -148,6 +171,11 @@ public:
ir_assignment(ir_instruction *lhs, ir_instruction *rhs,
ir_expression *condition);
virtual void accept(ir_visitor *v)
{
v->visit(this);
}
/**
* Left-hand side of the assignment.
*/
@ -234,6 +262,11 @@ public:
ir_expression(int op, const struct glsl_type *type,
ir_instruction *, ir_instruction *);
virtual void accept(ir_visitor *v)
{
v->visit(this);
}
ir_expression_operation operation;
ir_instruction *operands[2];
};
@ -262,6 +295,11 @@ class ir_dereference : public ir_instruction {
public:
ir_dereference(struct ir_instruction *);
virtual void accept(ir_visitor *v)
{
v->visit(this);
}
enum {
ir_reference_variable,
ir_reference_array,
@ -287,6 +325,11 @@ class ir_constant : public ir_instruction {
public:
ir_constant(const struct glsl_type *type, const void *data);
virtual void accept(ir_visitor *v)
{
v->visit(this);
}
/**
* Value of the constant.
*

89
ir_print_visitor.cpp Normal file
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@ -0,0 +1,89 @@
/*
* 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 <cstdio>
#include "ir_print_visitor.h"
void ir_print_visitor::visit(ir_variable *ir)
{
printf("(declare \n");
const char *const cent = (ir->centroid) ? "centroid " : "";
const char *const inv = (ir->invariant) ? "invariant " : "";
const char *const mode[] = { "", "uniform ", "in ", "out ", "inout " };
const char *const interp[] = { "", "flat", "noperspective" };
printf(" (%s%s%s%s)\n",
cent, inv, mode[ir->mode], interp[ir->interpolation]);
printf(" (FINISHME: type goes here)\n");
printf(" (%s)\n", ir->name);
printf(")\n");
}
void ir_print_visitor::visit(ir_label *ir)
{
printf("(label %s)\n", ir->label);
}
void ir_print_visitor::visit(ir_function_signature *ir)
{
printf("%s:%d:\n", __func__, __LINE__);
(void) ir;
}
void ir_print_visitor::visit(ir_function *ir)
{
printf("(function %s\n", ir->name);
printf(")\n");
}
void ir_print_visitor::visit(ir_expression *ir)
{
printf("%s:%d:\n", __func__, __LINE__);
(void) ir;
}
void ir_print_visitor::visit(ir_dereference *ir)
{
printf("%s:%d:\n", __func__, __LINE__);
(void) ir;
}
void ir_print_visitor::visit(ir_assignment *ir)
{
printf("%s:%d:\n", __func__, __LINE__);
(void) ir;
}
void ir_print_visitor::visit(ir_constant *ir)
{
printf("%s:%d:\n", __func__, __LINE__);
(void) ir;
}

65
ir_print_visitor.h Normal file
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@ -0,0 +1,65 @@
/*
* 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.
*/
#pragma once
#ifndef IR_PRINT_VISITOR_H
#define IR_PRINT_VISITOR_H
#include "ir.h"
#include "ir_visitor.h"
/**
* Abstract base class of visitors of IR instruction trees
*/
class ir_print_visitor : public ir_visitor {
public:
ir_print_visitor()
{
/* empty */
}
virtual ~ir_print_visitor()
{
/* empty */
}
/**
* \name Visit methods
*
* As typical for the visitor pattern, there must be one \c visit method for
* each concrete subclass of \c ir_instruction. Virtual base classes within
* the hierarchy should not have \c visit methods.
*/
/*@{*/
virtual void visit(ir_variable *);
virtual void visit(ir_label *);
virtual void visit(ir_function_signature *);
virtual void visit(ir_function *);
virtual void visit(ir_expression *);
virtual void visit(ir_dereference *);
virtual void visit(ir_assignment *);
virtual void visit(ir_constant *);
/*@}*/
};
#endif /* IR_PRINT_VISITOR_H */

57
ir_visitor.h Normal file
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@ -0,0 +1,57 @@
/*
* 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.
*/
#pragma once
#ifndef IR_VISITOR_H
#define IR_VISITOR_H
/**
* Abstract base class of visitors of IR instruction trees
*/
class ir_visitor {
public:
virtual ~ir_visitor()
{
/* empty */
}
/**
* \name Visit methods
*
* As typical for the visitor pattern, there must be one \c visit method for
* each concrete subclass of \c ir_instruction. Virtual base classes within
* the hierarchy should not have \c visit methods.
*/
/*@{*/
virtual void visit(class ir_variable *) = 0;
virtual void visit(class ir_label *) = 0;
virtual void visit(class ir_function_signature *) = 0;
virtual void visit(class ir_function *) = 0;
virtual void visit(class ir_expression *) = 0;
virtual void visit(class ir_dereference *) = 0;
virtual void visit(class ir_assignment *) = 0;
virtual void visit(class ir_constant *) = 0;
/*@}*/
};
#endif /* IR_VISITOR_H */