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Reimplement ir_expression_flattening_visitor using ir_hierarchical_vistor

This commit is contained in:
Ian Romanick 2010-05-26 16:07:49 -07:00
parent 13e1b6b725
commit 4b389492b9
1 changed files with 20 additions and 116 deletions
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136
ir_expression_flattening.cpp
View File

@ -39,15 +39,13 @@
#include "ir_expression_flattening.h"
#include "glsl_types.h"
class ir_expression_flattening_visitor : public ir_visitor {
class ir_expression_flattening_visitor : public ir_hierarchical_visitor {
public:
ir_expression_flattening_visitor(ir_instruction *base_ir,
bool (*predicate)(ir_instruction *ir))
{
this->base_ir = base_ir;
this->predicate = predicate;
/* empty */
}
virtual ~ir_expression_flattening_visitor()
@ -55,30 +53,9 @@ public:
/* 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_loop *);
virtual void visit(ir_loop_jump *);
virtual void visit(ir_function_signature *);
virtual void visit(ir_function *);
virtual void visit(ir_expression *);
virtual void visit(ir_swizzle *);
virtual void visit(ir_dereference_variable *);
virtual void visit(ir_dereference_array *);
virtual void visit(ir_dereference_record *);
virtual void visit(ir_assignment *);
virtual void visit(ir_constant *);
virtual void visit(ir_call *);
virtual void visit(ir_return *);
virtual void visit(ir_if *);
/*@}*/
virtual ir_visitor_status visit_enter(ir_call *);
virtual ir_visitor_status visit_enter(ir_return *);
virtual ir_visitor_status visit_leave(ir_expression *);
bool (*predicate)(ir_instruction *ir);
ir_instruction *base_ir;
@ -96,45 +73,12 @@ do_expression_flattening(exec_list *instructions,
}
}
void
ir_expression_flattening_visitor::visit(ir_variable *ir)
{
(void) ir;
}
void
ir_expression_flattening_visitor::visit(ir_loop *ir)
{
do_expression_flattening(&ir->body_instructions, this->predicate);
}
void
ir_expression_flattening_visitor::visit(ir_loop_jump *ir)
{
(void) ir;
}
void
ir_expression_flattening_visitor::visit(ir_function_signature *ir)
{
do_expression_flattening(&ir->body, this->predicate);
}
void
ir_expression_flattening_visitor::visit(ir_function *ir)
{
(void) ir;
}
void
ir_expression_flattening_visitor::visit(ir_expression *ir)
ir_visitor_status
ir_expression_flattening_visitor::visit_leave(ir_expression *ir)
{
unsigned int operand;
for (operand = 0; operand < ir->get_num_operands(); operand++) {
ir->operands[operand]->accept(this);
/* If the operand matches the predicate, then we'll assign its
* value to a temporary and deref the temporary as the operand.
*/
@ -153,68 +97,28 @@ ir_expression_flattening_visitor::visit(ir_expression *ir)
ir->operands[operand] = new ir_dereference_variable(var);
}
}
return visit_continue;
}
void
ir_expression_flattening_visitor::visit(ir_swizzle *ir)
{
ir->val->accept(this);
}
void
ir_expression_flattening_visitor::visit(ir_dereference_variable *ir)
{
ir->var->accept(this);
}
void
ir_expression_flattening_visitor::visit(ir_dereference_array *ir)
{
ir->array_index->accept(this);
ir->array->accept(this);
}
void
ir_expression_flattening_visitor::visit(ir_dereference_record *ir)
{
ir->record->accept(this);
}
void
ir_expression_flattening_visitor::visit(ir_assignment *ir)
{
ir->rhs->accept(this);
}
void
ir_expression_flattening_visitor::visit(ir_constant *ir)
ir_visitor_status
ir_expression_flattening_visitor::visit_enter(ir_call *ir)
{
/* FINISHME: Why not process the call parameters? (Same behavior as original
* FINISHME: code.)
*/
(void) ir;
return visit_continue_with_parent;
}
void
ir_expression_flattening_visitor::visit(ir_call *ir)
ir_visitor_status
ir_expression_flattening_visitor::visit_enter(ir_return *ir)
{
/* FINISHME: Why not process the return value? (Same behavior as original
* FINISHME: code.)
*/
(void) ir;
}
void
ir_expression_flattening_visitor::visit(ir_return *ir)
{
(void) ir;
}
void
ir_expression_flattening_visitor::visit(ir_if *ir)
{
ir->condition->accept(this);
do_expression_flattening(&ir->then_instructions, this->predicate);
do_expression_flattening(&ir->else_instructions, this->predicate);
return visit_continue_with_parent;
}