X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeschedrand.c;h=394b7713f208edb72f4dd8d15ef8c1106d9208b3;hb=fef8dc3eff6468d7d65485af8e1ac9884c504e1a;hp=bfaf5fb0598583b90806a787530f5811869fc64e;hpb=bb5461e3f6f900c09222814f2eec779684f28f73;p=libfirm

diff --git a/ir/be/beschedrand.c b/ir/be/beschedrand.c
index bfaf5fb05..394b7713f 100644
--- a/ir/be/beschedrand.c
+++ b/ir/be/beschedrand.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1995-2007 University of Karlsruhe.  All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
  *
  * This file is part of libFirm.
  *
@@ -22,86 +22,85 @@
  * @brief       Random node selector.
  * @author      Matthias Braun
  * @date        29.08.2006
- * @version     $Id$
  */
-#ifdef HAVE_CONFIG_H
 #include "config.h"
-#endif
 
 #include <stdlib.h>
 
-#include "besched_t.h"
+#include "besched.h"
 #include "belistsched.h"
+#include "bemodule.h"
 
 /**
  * The random selector:
  * Just assure that branches are executed last, otherwise select a random node
  */
-static ir_node *random_select(void *block_env, ir_nodeset_t *ready_set,
-                              ir_nodeset_t *live_set)
+static ir_node *random_select(void *block_env, ir_nodeset_t *ready_set)
 {
-	ir_nodeset_iterator_t iter;
-	const arch_env_t *arch_env = block_env;
-	ir_node          *irn      = NULL;
 	int only_branches_left = 1;
-	(void) live_set;
+	(void)block_env;
 
 	/* assure that branches and constants are executed last */
-	ir_nodeset_iterator_init(&iter, ready_set);
-	while( (irn = ir_nodeset_iterator_next(&iter)) != NULL) {
-		if (! arch_irn_class_is(arch_env, irn, branch)) {
+	foreach_ir_nodeset(ready_set, irn, iter) {
+		if (!is_cfop(irn)) {
 			only_branches_left = 0;
 			break;
 		}
 	}
 
+	ir_node *rand_node = NULL;
 	if (only_branches_left) {
 		/* at last: schedule branches */
-		ir_nodeset_iterator_init(&iter, ready_set);
-		irn = ir_nodeset_iterator_next(&iter);
+		rand_node = ir_nodeset_first(ready_set);
 	} else {
 		do {
 			/* take 1 random node */
 			int n = rand() % ir_nodeset_size(ready_set);
 			int i = 0;
-			ir_nodeset_iterator_init(&iter, ready_set);
-			while ((irn = ir_nodeset_iterator_next(&iter)) != NULL) {
-				if(i == n) {
+			foreach_ir_nodeset(ready_set, irn, iter) {
+				rand_node = irn;
+				if (i == n) {
 					break;
 				}
 				++i;
 			}
-		} while(arch_irn_class_is(arch_env, irn, branch));
+		} while (is_cfop(rand_node));
 	}
 
-	return irn;
+	return rand_node;
 }
 
-static void *random_init_graph(const list_sched_selector_t *vtab, const arch_env_t *arch_env, ir_graph *irg)
+static void *random_init_graph(ir_graph *irg)
 {
-	/* Using time(NULL) as a seed here gives really random results,
-	   but is NOT deterministic which makes debugging impossible.
-	   Moreover no-one want non-deterministic compilers ... */
+	(void)irg;
+	/* TODO: add commandline option for the seed */
 	srand(0x4711);
-	return (void *)arch_env;
+	return NULL;
 }
 
-static void *random_init_block(void *graph_env, ir_node *bl)
+static void *random_init_block(void *graph_env, ir_node *block)
 {
-	return graph_env;
+	(void)graph_env;
+	(void)block;
+	return NULL;
 }
 
-static const list_sched_selector_t random_selector_struct = {
-	random_init_graph,
-	random_init_block,
-	random_select,
-	NULL,                /* to_appear_in_schedule */
-	NULL,                /* node_ready */
-	NULL,                /* node_selected */
-	NULL,                /* exectime */
-	NULL,                /* latency */
-	NULL,                /* finish_block */
-	NULL                 /* finish_graph */
-};
+static void sched_random(ir_graph *irg)
+{
+	static const list_sched_selector_t random_selector = {
+		random_init_graph,
+		random_init_block,
+		random_select,
+		NULL,                /* node_ready */
+		NULL,                /* node_selected */
+		NULL,                /* finish_block */
+		NULL                 /* finish_graph */
+	};
+	be_list_sched_graph(irg, &random_selector);
+}
 
-const list_sched_selector_t *random_selector = &random_selector_struct;
+BE_REGISTER_MODULE_CONSTRUCTOR(be_init_sched_rand)
+void be_init_sched_rand(void)
+{
+	be_register_scheduler("random", sched_random);
+}