remove class cast optimization

diff --git a/include/libfirm/iroptimize.h b/include/libfirm/iroptimize.h
index edb52dc..a6511e4 100644 (file)
--- a/include/libfirm/iroptimize.h
+++ b/include/libfirm/iroptimize.h
@@ -626,69 +626,6 @@ FIRM_API void opt_tail_recursion(void);
  */
 FIRM_API ir_prog_pass_t *opt_tail_recursion_pass(const char *name);
 
-/** This is the type for a method, that returns a pointer type to
- *  tp.  This is needed in the normalization. */
-typedef ir_type *(*gen_pointer_type_to_func)(ir_type *tp);
-
-/**  Insert Casts so that class type casts conform exactly with the type hierarchy.
- *
- *  Formulated in Java, this achieves the following:
- *
- *  For a class hierarchy
- *    class A {}
- *    class B extends A {}
- *    class C extends B {}
- *  we transforms a cast
- *    (A)new C()
- *  to
- *    (A)((B)new C()).
- *
- *  The algorithm works for Casts with class types, but also for Casts
- *  with all pointer types that point (over several indirections,
- *  i.e. ***A) to a class type.  Normalizes all graphs.  Computes type
- *  information (@see irtypeinfo.h) if not available.
- *  Invalidates trout information as new casts are generated.
- *
- *  @param gppt_fct A function that returns a pointer type that points
- *    to the type given as argument.  If this parameter is NULL, a default
- *    function is used that either uses trout information or performs a O(n)
- *    search to find an existing pointer type.  If it can not find a type,
- *    generates a pointer type with mode_P_mach and suffix "cc_ptr_tp".
- */
-FIRM_API void normalize_irp_class_casts(gen_pointer_type_to_func gppt_fct);
-
-/**  Insert Casts so that class type casts conform exactly with the type hierarchy
- *   in given graph.
- *
- *   For more details see normalize_irp_class_casts().
- *
- *  This transformation requires that type information is computed. @see irtypeinfo.h.
- */
-FIRM_API void normalize_irg_class_casts(ir_graph *irg,
-                                        gen_pointer_type_to_func gppt_fct);
-
-/** Optimize casting between class types.
- *
- *    class A { m(); }
- *    class B extends A { }
- *    class C extends B {}
- *  Performs the following transformations:
- *    C c = (C)(B)(A)(B)new C()  --> C c = (C)(B)newC() --> C c = new C()
- *    (Optimizing downcasts as A a = (A)(B)(new A()) --> A a = new A() can
- *     be suppressed by setting the flag opt_suppress_downcast_optimization.
- *     Downcasting A to B might cause an exception.  It is not clear
- *     whether this is modeled by the Firm Cast node, as it has no exception
- *     outputs.);
- *  If there is inh_m() that overwrites m() in B:
- *    ((A) new B()).m()  --> (new B()).inh_m()
- *  Phi((A)x, (A)y)  --> (A) Phi (x, y)  if (A) is an upcast.
- *
- *  Computes type information if not available. @see irtypeinfo.h.
- *  Typeinformation is valid after optimization.
- *  Invalidates trout information.
- */
-FIRM_API void optimize_class_casts(void);
-
 /**
  * CLiff Click's combo algorithm from
  *   "Combining Analyses, combining Optimizations".

diff --git a/ir/common/firm.c b/ir/common/firm.c
index df3ef9c..661d216 100644 (file)
--- a/ir/common/firm.c
+++ b/ir/common/firm.c
@@ -104,8 +104,6 @@ void ir_init(void)
        /* Builds a construct allowing to access all information to be constructed
           later. */
        init_irprog_2();
-       /* class cast optimization */
-       firm_init_class_casts_opt();
        /* memory disambiguation */
        firm_init_memory_disambiguator();
        firm_init_loop_opt();

diff --git a/ir/ir/irgraph.c b/ir/ir/irgraph.c
index 27f0bb6..f0ef088 100644 (file)
--- a/ir/ir/irgraph.c
+++ b/ir/ir/irgraph.c
@@ -140,7 +140,6 @@ ir_graph *new_r_ir_graph(ir_entity *ent, int n_loc)
        res->typeinfo_state      = ir_typeinfo_none;
        set_irp_typeinfo_inconsistent();           /* there is a new graph with typeinfo_none. */
        res->callee_info_state   = irg_callee_info_none;
-       res->class_cast_state    = ir_class_casts_transitive;
        res->fp_model            = fp_model_precise;
        res->mem_disambig_opt    = aa_opt_inherited;
 

diff --git a/ir/ir/irprog.c b/ir/ir/irprog.c
index 1fbcf35..321e752 100644 (file)
--- a/ir/ir/irprog.c
+++ b/ir/ir/irprog.c
@@ -99,7 +99,6 @@ static void complete_ir_prog(ir_prog *irp, const char *module_name)
        set_class_final(irp->segment_types[IR_SEGMENT_GLOBAL], 1);
 
        irp->const_code_irg             = new_const_code_irg();
-       irp->class_cast_state           = ir_class_casts_transitive;
        irp->globals_entity_usage_state = ir_entity_usage_not_computed;
 #undef IDENT
 }

diff --git a/ir/ir/irtypes.h b/ir/ir/irtypes.h
index 3f74ef8..734aaab 100644 (file)
--- a/ir/ir/irtypes.h
+++ b/ir/ir/irtypes.h
@@ -514,7 +514,6 @@ struct ir_graph {
        op_pin_state           irg_pinned_state;  /**< Flag for status of nodes. */
        ir_typeinfo_state      typeinfo_state;    /**< Validity of type information. */
        irg_callee_info_state  callee_info_state; /**< Validity of callee information. */
-       ir_class_cast_state    class_cast_state;  /**< Kind of cast operations in code. */
        unsigned mem_disambig_opt;               /**< Options for the memory disambiguator. */
        unsigned fp_model;                       /**< floating point model of the graph. */
 
@@ -623,7 +622,6 @@ struct ir_prog {
        size_t max_callgraph_recursion_depth;   /**< needed in callgraph. */
        double max_method_execution_frequency;  /**< needed in callgraph. */
        loop_nesting_depth_state lnd_state;  /**< The state of loop nesting depth information. */
-       ir_class_cast_state class_cast_state;    /**< The state of cast operations in code. */
        ir_entity_usage_computed_state globals_entity_usage_state;
 
        ir_label_t last_label_nr;            /**< The highest label number for generating unique labels. */

diff --git a/ir/opt/opt_init.h b/ir/opt/opt_init.h
index 009bdc7..075b73a 100644 (file)
--- a/ir/opt/opt_init.h
+++ b/ir/opt/opt_init.h
@@ -33,8 +33,6 @@ void firm_init_reassociation(void);
 
 void firm_init_scalar_replace(void);
 
-void firm_init_class_casts_opt(void);
-
 void firm_init_loop_opt(void);
 
 #endif

diff --git a/ir/opt/tropt.c b/ir/opt/tropt.c
deleted file mode 100644 (file)
index 1a7d1c4..0000000
--- a/ir/opt/tropt.c
+++ /dev/null
@@ -1,469 +0,0 @@
-/*
- * Copyright (C) 1995-2011 University of Karlsruhe.  All right reserved.
- *
- * This file is part of libFirm.
- *
- * This file may be distributed and/or modified under the terms of the
- * GNU General Public License version 2 as published by the Free Software
- * Foundation and appearing in the file LICENSE.GPL included in the
- * packaging of this file.
- *
- * Licensees holding valid libFirm Professional Edition licenses may use
- * this file in accordance with the libFirm Commercial License.
- * Agreement provided with the Software.
- *
- * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
- * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE.
- */
-
-/**
- * @file
- * @brief   Perform optimizations of the type representation.
- * @date    20.4.2005
- * @author  Goetz Lindenmaier
- */
-#include "config.h"
-
-#include <assert.h>
-
-#include "iroptimize.h"
-#include "irprog.h"
-#include "irtypeinfo.h"
-#include "irgwalk.h"
-#include "trouts.h"
-#include "ircons.h"
-#include "irgmod.h"
-#include "irflag_t.h"
-#include "xmalloc.h"
-#include "debug.h"
-#include "opt_init.h"
-
-DEBUG_ONLY(static firm_dbg_module_t *dbg;)
-
-/* - statistics ---------------------------------------------- */
-
-static size_t n_casts_normalized = 0;
-static size_t n_casts_removed    = 0;
-static size_t n_sels_concretized = 0;
-
-/* - Cast normalization. ------------------------------------- */
-
-static ir_type *default_gen_pointer_type_to(ir_type *tp);
-
-#define PTR_TYPE_SUFFIX "cc_ptr_tp"  /* class cast pointer type. */
-static ident *ptr_type_suffix = NULL;
-static gen_pointer_type_to_func gen_pointer_type_to = default_gen_pointer_type_to;
-
-/**
- * Find a pointer type to a given type.
- * Uses and updates trouts if available.
- */
-static ir_type *default_gen_pointer_type_to(ir_type *tp)
-{
-       ir_type *res = find_pointer_type_to_type(tp);
-       if (is_unknown_type(res))
-               res = new_type_pointer(tp);
-
-       return res;
-}
-
-/** Return a type that is a depth times pointer to type. */
-static ir_type *pointerize_type(ir_type *tp, size_t depth)
-{
-       for (; depth > 0; --depth) {
-               tp = gen_pointer_type_to(tp);
-       }
-       return tp;
-}
-
-
-static ir_node *normalize_values_type(ir_type *totype, ir_node *pred)
-{
-       ir_type *fromtype = get_irn_typeinfo_type(pred);
-       ir_node *new_cast = pred;
-       ir_node *block;
-       size_t  ref_depth = 0;
-
-       if (totype == fromtype) return pred;   /* Case for optimization! */
-
-       while (is_Pointer_type(totype) && is_Pointer_type(fromtype)) {
-               totype   = get_pointer_points_to_type(totype);
-               fromtype = get_pointer_points_to_type(fromtype);
-               ++ref_depth;
-       }
-
-       if (!is_Class_type(totype))   return pred;
-       if (!is_Class_type(fromtype)) return pred;
-
-       if ((get_class_supertype_index(totype, fromtype) != (size_t)-1) ||
-               (get_class_supertype_index(fromtype, totype) != (size_t)-1) ) {
-                       /* It's just what we want ... */
-                       return pred;
-       }
-
-       block = get_nodes_block(pred);
-
-       if (is_SubClass_of(totype, fromtype)) {
-               /* downcast */
-               while (get_class_subtype_index(fromtype, totype) == (size_t)-1) {
-                       /* Insert a cast to a subtype of fromtype. */
-                       ir_type *new_type = NULL;
-                       ir_node *new_cast;
-                       size_t   i;
-                       size_t   n_subtypes = get_class_n_subtypes(fromtype);
-                       for (i = 0; i < n_subtypes && !new_type; ++i) {
-                               ir_type *new_sub = get_class_subtype(fromtype, i);
-                               if (is_SuperClass_of(new_sub, totype))
-                                       new_type = new_sub;
-                       }
-                       assert(new_type);
-                       fromtype = new_type;
-                       new_type = pointerize_type(new_type, ref_depth);
-                       new_cast = new_r_Cast(block, pred, new_type);
-                       pred = new_cast;
-                       ++n_casts_normalized;
-                       set_irn_typeinfo_type(new_cast, new_type);  /* keep type information up to date. */
-               }
-       } else {
-               assert(is_SuperClass_of(totype, fromtype));
-               /* upcast */
-               while (get_class_supertype_index(fromtype, totype) == (size_t)-1) {
-                       /* Insert a cast to a supertype of fromtype. */
-                       ir_type *new_type = NULL;
-                       size_t i, n_supertypes = get_class_n_supertypes(fromtype);
-                       for (i = 0; i < n_supertypes && !new_type; ++i) {
-                               ir_type *new_super = get_class_supertype(fromtype, i);
-                               if (is_SubClass_of(new_super, totype))
-                                       new_type = new_super;
-                       }
-                       assert(new_type);
-                       fromtype = new_type;
-                       new_type = pointerize_type(new_type, ref_depth);
-                       new_cast = new_r_Cast(block, pred, new_type);
-                       pred = new_cast;
-                       ++n_casts_normalized;
-                       set_irn_typeinfo_type(new_cast, new_type);  /* keep type information up to date. */
-               }
-       }
-       return new_cast;
-}
-
-/**
- * Post-Walker.
- */
-static void normalize_irn_class_cast(ir_node *n, void *env)
-{
-       ir_node *res;
-       (void) env;
-       if (is_Cast(n)) {
-               ir_node *pred   = get_Cast_op(n);
-               ir_type *totype = get_Cast_type(n);
-               res = normalize_values_type(totype, pred);
-               set_Cast_op(n, res);
-       } else if (is_Call(n)) {
-               size_t n_params = get_Call_n_params(n);
-               size_t i;
-               ir_type *tp = get_Call_type(n);
-               for (i = 0; i < n_params; ++i) {
-                       res = normalize_values_type(get_method_param_type(tp, i), get_Call_param(n, i));
-                       set_Call_param(n, i, res);
-               }
-       }
-}
-
-
-static void pure_normalize_irg_class_casts(ir_graph *irg)
-{
-       assert(get_irg_class_cast_state(irg) != ir_class_casts_any &&
-              "Cannot normalize irregular casts.");
-       if (get_irg_class_cast_state(irg) == ir_class_casts_normalized) {
-               return;
-       }
-
-       irg_walk_graph(irg, NULL, normalize_irn_class_cast, NULL);
-       set_irg_class_cast_state(irg, ir_class_casts_normalized);
-}
-
-
-void normalize_irg_class_casts(ir_graph *irg, gen_pointer_type_to_func gppt_fct)
-{
-       assert(get_irp_typeinfo_state() == ir_typeinfo_consistent);
-
-       if (gppt_fct) gen_pointer_type_to = gppt_fct;
-
-       if (!ptr_type_suffix)
-               ptr_type_suffix = new_id_from_str(PTR_TYPE_SUFFIX);
-
-       pure_normalize_irg_class_casts(irg);
-
-       gen_pointer_type_to = default_gen_pointer_type_to;
-}
-
-void normalize_irp_class_casts(gen_pointer_type_to_func gppt_fct)
-{
-       size_t i, n;
-       if (gppt_fct) gen_pointer_type_to = gppt_fct;
-
-       for (i = 0, n = get_irp_n_irgs(); i < n; ++i) {
-               ir_graph *irg = get_irp_irg(i);
-               pure_normalize_irg_class_casts(irg);
-       }
-
-       set_irp_class_cast_state(ir_class_casts_normalized);
-       gen_pointer_type_to = default_gen_pointer_type_to;
-
-       DB((dbg, SET_LEVEL_1, " Cast normalization: %zu Casts inserted.\n", n_casts_normalized));
-}
-
-
-
-/* - Cast optimization. ------------------------------------------- */
-
-/**
- * Optimizes Casts:
- *
- *  (T1)(T2)x<T1> -> x<T1>
- *
- *  (T3)(T2)x<T1> -> (T3)x<T1>
- *
- * if possible.
- *
- * @param cast  the Cast node
- *
- * @return 1 if the cast was changed
- */
-static int cancel_out_casts(ir_node *cast)
-{
-       ir_node *orig, *pred = get_Cast_op(cast);
-       ir_type *tp_cast, *tp_pred, *tp_orig;
-
-       if (!is_Cast(pred)) return 0;
-       orig = get_Cast_op(pred);
-
-       tp_cast = get_Cast_type(cast);
-       tp_pred = get_Cast_type(pred);
-       tp_orig = get_irn_typeinfo_type(orig);
-
-       while (is_Pointer_type(tp_cast) &&
-             is_Pointer_type(tp_pred) &&
-             is_Pointer_type(tp_orig)   ) {
-               tp_cast = get_pointer_points_to_type(tp_cast);
-               tp_pred = get_pointer_points_to_type(tp_pred);
-               tp_orig = get_pointer_points_to_type(tp_orig);
-       }
-
-       if (!is_Class_type(tp_cast) || !is_Class_type(tp_pred) || !is_Class_type(tp_orig))
-               return 0;
-
-       if (is_SubClass_of(tp_pred, tp_cast) && get_opt_suppress_downcast_optimization())
-               return 0;
-
-       if (tp_cast == tp_orig) {
-               exchange(cast, orig);
-               n_casts_removed += 2;
-               return 1;
-       }
-
-       if (!(is_SubClass_of  (tp_cast, tp_orig) || is_SubClass_of  (tp_orig, tp_cast))) {
-               /* Avoid (B2)(A)(new B1()) --> (B2)(new B1())
-               * if B1 =!> B2  and  B2 =!> B1
-               */
-               return 0;
-       }
-
-       if ((is_SubClass_of  (tp_cast, tp_pred) && is_SuperClass_of(tp_pred, tp_orig)) ||
-           (is_SuperClass_of(tp_cast, tp_pred) && is_SubClass_of  (tp_pred, tp_orig))) {
-               /* Cast --> Pred --> Orig */
-               set_Cast_op(cast, orig);
-               ++n_casts_removed;
-               return 1;
-       }
-       return 0;
-}
-
-/**
- * Optimize Sel(Cast(type, ptr), ent) into Sel(ptr_type, ent_type)
- *
- * @param sel  the Sel node
- *
- * @return 1 if Cast's where removed
- */
-static int concretize_selected_entity(ir_node *sel)
-{
-       int res = 0;
-
-       ir_entity *sel_ent = get_Sel_entity(sel);
-       ir_node   *cast    = get_Sel_ptr(sel);
-       while (is_Cast(cast)) {
-               ir_type *cast_tp = get_Cast_type(cast);
-               ir_node *ptr     = get_Cast_op(cast);
-               ir_type *orig_tp = get_irn_typeinfo_type(ptr);
-
-               /* we handle only classes */
-               if (!is_Pointer_type(orig_tp)|| !is_Pointer_type(cast_tp))
-                       return res;
-               orig_tp = get_pointer_points_to_type(orig_tp);
-               cast_tp = get_pointer_points_to_type(cast_tp);
-               if (!is_Class_type(orig_tp) || !is_Class_type(cast_tp))
-                       return res;
-
-               /* We only want to concretize, but not generalize. */
-               if (!is_SuperClass_of(cast_tp, orig_tp))
-                       return res;
-
-               /* The sel entity should be a member of the cast_tp, else
-                  the graph was not properly typed. */
-               if (get_class_member_index(cast_tp, sel_ent) == (size_t)-1)
-                       return res;
-
-               ir_entity *new_ent = resolve_ent_polymorphy(orig_tp, sel_ent);
-
-               /* New ent must be member of orig_tp. */
-               if (get_class_member_index(orig_tp, new_ent) == (size_t)-1)
-                       return res;
-
-               /* all checks done, we can remove the Cast and update the Sel */
-               set_Sel_entity(sel, new_ent);
-               set_Sel_ptr(sel, ptr);
-               ++n_sels_concretized;
-
-               sel_ent = new_ent;
-               cast    = ptr;
-               res     = 1;
-       }
-       return res;
-}
-
-/**
- * Move Casts of the same type through a Phi node, i.e.
- * Phi(Cast(type, x_0), ..., Cast(type, x_n)) -> Cast(type, Phi(x_0, ..., x_n))
- *
- * @param phi  the Phi node
- *
- * @return 1 if Cast's where moved
- */
-static int concretize_Phi_type(ir_node *phi)
-{
-       int       n_preds = get_Phi_n_preds(phi);
-       ir_node **pred    = ALLOCAN(ir_node*, n_preds);
-       ir_node  *nn, *blk;
-       ir_type  *totype;
-       ir_type  *fromtype;
-       int       i;
-
-       if (n_preds == 0)
-               return 0;
-       pred[0] = get_Phi_pred(phi, 0);
-
-       if (!is_Cast(pred[0]))
-               return 0;
-
-       if (!is_Cast_upcast(pred[0]))
-               return 0;
-
-       fromtype = get_irn_typeinfo_type(get_Cast_op(pred[0]));
-       totype   = get_Cast_type(pred[0]);
-
-       pred[0] = get_Cast_op(pred[0]);
-       for (i = 1; i < n_preds; ++i) {
-               pred[i] = get_Phi_pred(phi, i);
-               if (!is_Cast(pred[i]))
-                       return 0;
-               if (get_irn_typeinfo_type(get_Cast_op(pred[i])) != fromtype)
-                       return 0;
-               pred[i] = get_Cast_op(pred[i]);
-       }
-
-       /* Transform Phi */
-       blk = get_nodes_block(phi);
-       nn  = new_r_Phi(blk, n_preds, pred, get_irn_mode(phi));
-       set_irn_typeinfo_type(nn, fromtype);
-       nn  = new_r_Cast(blk, nn, totype);
-       set_irn_typeinfo_type(nn, totype);
-       exchange(phi, nn);
-       return 1;
-}
-
-/**
- * Remove Casted null checks, i.e.
- *
- * Cmp(Cast(type, x_orig), NULL_type) -> Cmp(x_orig, NULL_orig)
- *
- * @param cmp  the Cmp node
- *
- * @return 1 if Cast's where removed
- */
-static int remove_Cmp_Null_cast(ir_node *cmp)
-{
-       ir_graph *irg;
-       ir_node *cast, *null, *new_null;
-       int     cast_pos, null_pos;
-       ir_type *fromtype;
-       ir_mode *mode;
-
-       cast = get_Cmp_left(cmp);
-       if (!is_Cast(cast)) {
-               null     = cast;
-               null_pos = 0;
-               cast     = get_Cmp_right(cmp);
-               cast_pos = 1;
-               if (!is_Cast(cast))
-                       return 0;
-       } else {
-               null = get_Cmp_right(cmp);
-               cast_pos = 0;
-               null_pos = 1;
-       }
-
-       if (! is_Const(null))
-               return 0;
-       mode = get_irn_mode(null);
-       if (!mode_is_reference(mode))
-               return 0;
-       if (get_Const_tarval(null) != get_mode_null(mode))
-               return 0;
-
-       /* Transform Cmp */
-       irg = get_irn_irg(cmp);
-       set_irn_n(cmp, cast_pos, get_Cast_op(cast));
-       fromtype = get_irn_typeinfo_type(get_Cast_op(cast));
-       new_null = new_r_Const(irg, get_Const_tarval(null));
-       set_irn_typeinfo_type(new_null, fromtype);
-       set_irn_n(cmp, null_pos, new_null);
-       ++n_casts_removed;
-       return 1;
-}
-
-/**
- * Post-Walker: Optimize class casts (mostly by trying to remove them)
- */
-static void irn_optimize_class_cast(ir_node *n, void *env)
-{
-       int *changed = (int*)env;
-
-       if (is_Cast(n))
-               *changed |= cancel_out_casts(n);
-       else if (is_Sel(n))
-               *changed |= concretize_selected_entity(n);
-       else if (is_Phi(n))
-               *changed |= concretize_Phi_type(n);
-       else if (is_Cmp(n))
-               *changed |= remove_Cmp_Null_cast(n);
-}
-
-void optimize_class_casts(void)
-{
-       int changed;
-
-       changed = 0;
-       all_irg_walk(NULL, irn_optimize_class_cast, &changed);
-
-       DB((dbg, SET_LEVEL_1, " Cast optimization: %zu Casts removed, %zu Sels concretized.\n",
-               n_casts_removed, n_sels_concretized));
-}
-
-void firm_init_class_casts_opt(void)
-{
-       FIRM_DBG_REGISTER(dbg, "firm.opt.tropt");
-}

diff --git a/ir/tr/tr_inheritance.c b/ir/tr/tr_inheritance.c
index 4b44c43..254f4d2 100644 (file)
--- a/ir/tr/tr_inheritance.c
+++ b/ir/tr/tr_inheritance.c
@@ -571,38 +571,3 @@ ir_entity *resolve_ent_polymorphy(ir_type *dynamic_class, ir_entity *static_ent)
 
        return res;
 }
-
-
-
-/* ----------------------------------------------------------------------- */
-/* Class cast state handling.                                              */
-/* ----------------------------------------------------------------------- */
-
-/* - State handling. ----------------------------------------- */
-
-void set_irg_class_cast_state(ir_graph *irg, ir_class_cast_state s)
-{
-       if (get_irp_class_cast_state() > s)
-               set_irp_class_cast_state(s);
-       irg->class_cast_state = s;
-}
-
-ir_class_cast_state get_irg_class_cast_state(const ir_graph *irg)
-{
-       return irg->class_cast_state;
-}
-
-void set_irp_class_cast_state(ir_class_cast_state s)
-{
-#ifndef NDEBUG
-       size_t i, n;
-       for (i = 0, n = get_irp_n_irgs(); i < n; ++i)
-               assert(get_irg_class_cast_state(get_irp_irg(i)) >= s);
-#endif
-       irp->class_cast_state = s;
-}
-
-ir_class_cast_state get_irp_class_cast_state(void)
-{
-       return irp->class_cast_state;
-}