* Copyright: (c) Universitaet Karlsruhe
* Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
*
- * Header for copy optimization problem. Analysis and set up of the problem.
+ * Internal header for copy optimization problem.
*/
#ifndef _BECOPYOPT_T_H
#define _BECOPYOPT_T_H
+#include <obstack.h>
#include "list.h"
-#include "bearch.h"
+#include "bearch_t.h"
#include "bechordal_t.h"
#include "becopyopt.h"
-
-#define MIS_HEUR_TRIGGER 8
+#include "benodesets.h"
/**
* Data representing the problem of copy minimization.
const arch_register_class_t *cls;
const arch_env_t *aenv;
ir_graph *irg;
- char *name; /**< ProgName__IrgName__RegClass */
+ char *name; /**< ProgName__IrgName__RegClassName */
+ cost_fct_t get_costs; /**< function ptr used to get costs for copies */
+ /** Representation as optimization units */
struct list_head units; /**< all units to optimize in specific order */
- cost_fct_t get_costs; /**< function ptr used to get costs for copies */
- struct obstack ob;
+
+ /** Representation in graph structure. Only build on demand */
+ struct obstack obst;
+ set *nodes;
};
-/**
- * A single unit of optimization. Lots of these form a copy-opt problem
- */
+/* Helpers */
+#define ASSERT_OU_AVAIL(co) assert((co)->units.next && "Representation as optimization-units not build")
+#define ASSERT_GS_AVAIL(co) assert((co)->nodes && "Representation as graph not build")
+
+#define get_irn_col(co, irn) arch_register_get_index(arch_get_irn_register((co)->aenv, irn))
+#define set_irn_col(co, irn, col) arch_set_irn_register((co)->aenv, irn, arch_register_for_index((co)->cls, col))
+#define is_curr_reg_class(co, irn) (arch_get_irn_reg_class((co)->aenv, irn, -1) == (co)->cls)
+
+#define list_entry_units(lh) list_entry(lh, unit_t, units)
+
+#define is_Reg_Phi(irn) (is_Phi(irn) && mode_is_data(get_irn_mode(irn)))
+
+#define get_Perm_src(irn) (get_irn_n(get_Proj_pred(irn), get_Proj_proj(irn)))
+#define is_Perm(arch_env, irn) (arch_irn_classify(arch_env, irn) == arch_irn_class_perm)
+#define is_Perm_Proj(arch_env, irn) (is_Proj(irn) && is_Perm(arch_env, get_Proj_pred(irn)))
+
+static INLINE int is_2addr_code(const arch_register_req_t *req)
+{
+ return req->type == arch_register_req_type_should_be_same;
+}
+
+/******************************************************************************
+ ____ _ _ _ _ _ _____ _
+ / __ \ | | | | | | (_) | / ____| |
+ | | | |_ __ | |_| | | |_ __ _| |_ ___ | (___ | |_ ___ _ __ __ _ __ _ ___
+ | | | | '_ \| __| | | | '_ \| | __/ __| \___ \| __/ _ \| '__/ _` |/ _` |/ _ \
+ | |__| | |_) | |_| |__| | | | | | |_\__ \ ____) | || (_) | | | (_| | (_| | __/
+ \____/| .__/ \__|\____/|_| |_|_|\__|___/ |_____/ \__\___/|_| \__,_|\__, |\___|
+ | | __/ |
+ |_| |___/
+ ******************************************************************************/
+
+#define MIS_HEUR_TRIGGER 8
+
typedef struct _unit_t {
struct list_head units; /**< chain for all units */
- copy_opt_t *co; /**< the copy_opt this unit belongs to */
+ copy_opt_t *co; /**< the copy opt this unit belongs to */
int node_count; /**< size of the nodes array */
ir_node **nodes; /**< [0] is the root-node, others are non interfering args of it. */
- int *costs; /**< costs[i] are arising, if nodes[i] has a different color */
+ int *costs; /**< costs[i] are incurred, if nodes[i] has a different color */
int inevitable_costs; /**< sum of costs of all args interfering with root */
int all_nodes_costs; /**< sum of all costs[i] */
- int min_nodes_costs; /**< a lower bound for the costs in costs[], determined by a max indep. set */
+ int min_nodes_costs; /**< a lower bound for the costs in costs[], determined by a max independent set */
int sort_key; /**< maximum costs. controls the order of ou's in the struct list_head units. */
/* for heuristic */
struct list_head queue; /**< list of qn's sorted by weight of qn-mis */
} unit_t;
-/* Helpers */
-#define get_irn_col(co, irn) arch_register_get_index(arch_get_irn_register((co)->aenv, irn))
-#define set_irn_col(co, irn, col) arch_set_irn_register((co)->aenv, irn, arch_register_for_index((co)->cls, col))
-#define is_curr_reg_class(co, irn) (arch_get_irn_reg_class((co)->aenv, irn, -1) == (co)->cls)
-#define MIN(a,b) ((a<b)?(a):(b))
-#define MAX(a,b) ((a<b)?(b):(a))
-#define list_entry_units(lh) list_entry(lh, unit_t, units)
+/******************************************************************************
+ _____ _ _____ _
+ / ____| | | / ____| |
+ | | __ _ __ __ _ _ __ | |__ | (___ | |_ ___ _ __ __ _ __ _ ___
+ | | |_ | '__/ _` | '_ \| '_ \ \___ \| __/ _ \| '__/ _` |/ _` |/ _ \
+ | |__| | | | (_| | |_) | | | | ____) | || (_) | | | (_| | (_| | __/
+ \_____|_| \__,_| .__/|_| |_| |_____/ \__\___/|_| \__,_|\__, |\___|
+ | | __/ |
+ |_| |___/
+ ******************************************************************************/
+typedef struct _neighb_t neighb_t;
+typedef struct _affinity_node_t affinity_node_t;
-#define get_Copy_src(irn) (get_irn_n(get_Proj_pred(irn), get_Proj_proj(irn)))
-#define is_Perm(arch_env, irn) (arch_irn_classify(arch_env, irn) == arch_irn_class_perm)
-#define is_Reg_Phi(irn) (is_Phi(irn) && mode_is_data(get_irn_mode(irn)))
-#define is_Perm_Proj(arch_env, irn) (is_Proj(irn) && is_Perm(arch_env, get_Proj_pred(irn)))
-#define is_2addr_code(arch_env, irn, req) (arch_get_register_req(arch_env, req, irn, -1)->type == arch_register_req_type_should_be_same)
+struct _neighb_t {
+ neighb_t *next; /** the next neighbour entry*/
+ ir_node *irn; /** the neighbour itself */
+ int costs; /** the costs of the edge (affinity_node_t->irn, neighb_t->irn) */
+};
-/**
- * Checks if a node is optimizable, viz. has somthing to do with coalescing
- * @param arch The architecture environment
- * @param irn The irn to check
- * @param req A register_requirement structure (used to check for 2-addr-code)
- */
-#define co_is_optimizable(arch, irn, req) (!arch_irn_is_ignore(arch, irn) && (is_Reg_Phi(irn) || is_Perm_Proj(arch, irn) || is_2addr_code(arch, irn, req)))
+struct _affinity_node_t {
+ ir_node *irn; /** a node with affinity edges */
+ int degree; /** number of affinity edges in the linked list below */
+ neighb_t *neighbours; /** a linked list of all affinity neighbours */
+ void *data; /** stuff that is attachable. */
+};
-/**
- * Checks if the irn is a non-interfering argument of a node which 'is_optimizable'
- */
-int co_is_optimizable_arg(const copy_opt_t *co, ir_node *irn);
-/**
- * Returns the maximal costs possible, i.e. the costs if all
- * pairs would be assigned different registers.
- */
-int co_get_max_copy_costs(const copy_opt_t *co);
+static INLINE affinity_node_t *get_affinity_info(const copy_opt_t *co, ir_node *irn) {
+ affinity_node_t find;
-/**
- * Returns the inevitable costs, i.e. the costs of
- * all copy pairs which interfere.
- */
-int co_get_inevit_copy_costs(const copy_opt_t *co);
+ ASSERT_GS_AVAIL(co);
-/**
- * Returns the current costs the copies are causing.
- * The result includes inevitable costs and the costs
- * of the copies regarding the current register allocation
- */
-int co_get_copy_costs(const copy_opt_t *co);
+ find.irn = irn;
+ return set_find(co->nodes, &find, sizeof(find), nodeset_hash(irn));
+}
-/**
- * Returns a lower bound for the costs of copies in this ou.
- * The result includes inevitable costs and the costs of a
- * minimal costs caused by the nodes of the ou.
- */
-int co_get_lower_bound(const copy_opt_t *co);
+#define co_gs_nodes_begin(co) set_first((co)->nodes)
+#define co_gs_nodes_next(co) set_next((co)->nodes)
+#define co_gs_nodes_break(co) set_break((co)->nodes)
+
+#define co_gs_foreach_aff_node(co, aff_node) for (aff_node = co_gs_nodes_begin(co); aff_node; aff_node = co_gs_nodes_next(co))
+#define co_gs_foreach_neighb(aff_node, neighb) for (neighb = aff_node->neighbours; neighb; neighb = neighb->next)
#endif
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