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/*
* phc -- the open source PHP compiler
* See doc/license/README.license for licensing information
*
* Use the results of the analyses to transform the MIR. Do not handle dead
* code.
* */
#ifndef PHC_OPTIMIZATION_TRANSFORMER
#define PHC_OPTIMIZATION_TRANSFORMER
class Whole_program;
class Index_node;
class Optimization_transformer : public CFG_visitor
{
public:
Whole_program* wp;
Optimization_transformer (Whole_program*);
void run (CFG* cfg);
// for passing between visit_assign_var and visit_expr
Index_node* lhs;
bool assign_var_is_ref;
MIR::Rvalue* get_literal (Basic_block* bb, MIR::Rvalue* in);
virtual void visit_block (Basic_block* bb);
const Abstract_value* get_in_abstract_value (Basic_block* bb, MIR::Rvalue* in);
const Abstract_value* get_out_abstract_value (Basic_block* bb, MIR::Rvalue* in);
bool rhs_is_pure (Statement_block* bb, MIR::Expr* in);
void visit_branch_block (Branch_block* bb);
DECLARE_STATEMENT_CFG_VISITORS
DECLARE_EXPR_CFG_VISITORS
MIR::Expr* transform_cast (Statement_block*, MIR::Cast*);
void transform_eval_expr (Statement_block*, MIR::Eval_expr*, BB_list*);
private:
void copy_in_literals (Basic_block* bb, Method_info_list* receivers, MIR::Actual_parameter_list* params);
};
#endif // PHC_OPTIMIZATION_TRANSFORMER
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