Corrected setting register classes of Return and Barrier nodes

[libfirm] / ir / be / besched.c

diff --git a/ir/be/besched.c b/ir/be/besched.c
index 66472d1..4a14efc 100644 (file)
--- a/ir/be/besched.c
+++ b/ir/be/besched.c
@@ -1,15 +1,22 @@
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
 
-#include <stdlib.h>
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
 
 #include "impl.h"
 #include "irprintf.h"
 #include "irgwalk.h"
 #include "irnode_t.h"
+#include "irgraph_t.h"
 #include "iredges_t.h"
 #include "debug.h"
 
+#include "bearch.h"
 #include "besched_t.h"
-#include "besched.h"
+#include "beutil.h"
 #include "belistsched.h"
 
 FIRM_IMPL1(sched_get_time_step, int, const ir_node *)
@@ -21,6 +28,8 @@ FIRM_IMPL1(sched_first, ir_node *, const ir_node *)
 FIRM_IMPL1(sched_last, ir_node *, const ir_node *)
 FIRM_IMPL2(sched_add_after, ir_node *, ir_node *, ir_node *)
 FIRM_IMPL2(sched_add_before, ir_node *, ir_node *, ir_node *)
+FIRM_IMPL2(sched_comes_after, int, const ir_node *, const ir_node *)
+FIRM_IMPL1_VOID(sched_remove, ir_node *)
 
 size_t sched_irn_data_offset = 0;
 
@@ -36,32 +45,16 @@ static void block_sched_dumper(ir_node *block, void *env)
        }
 }
 
-void be_sched_dump(FILE *f, const ir_graph *irg)
+void be_sched_dump(FILE *f, ir_graph *irg)
 {
-       irg_block_walk_graph((ir_graph *) irg, block_sched_dumper, NULL, f);
+       irg_block_walk_graph(irg, block_sched_dumper, NULL, f);
 }
 
+/* Init the scheduling stuff. */
 void be_sched_init(void)
 {
        sched_irn_data_offset = register_additional_node_data(sizeof(sched_info_t));
-  firm_dbg_register("be.sched");
-}
-
-void be_sched_test(void)
-{
-       int i, n;
-       struct obstack obst;
-
-       obstack_init(&obst);
-
-       for(i = 0, n = get_irp_n_irgs(); i < n; ++i) {
-               ir_graph *irg = get_irp_irg(i);
-
-               list_sched(irg, trivial_selector);
-               be_sched_dump(stdout, irg);
-       }
-
-       obstack_free(&obst, NULL);
+       firm_dbg_register("be.sched");
 }
 
 void sched_renumber(const ir_node *block)
@@ -77,7 +70,7 @@ void sched_renumber(const ir_node *block)
   }
 }
 
-
+/* Verify a schedule. */
 int sched_verify(const ir_node *block)
 {
   firm_dbg_module_t *dbg_sched = firm_dbg_register("be.sched");
@@ -85,6 +78,7 @@ int sched_verify(const ir_node *block)
   const ir_node *irn;
   int i, n;
   int *save_time_step;
+  const ir_node **save_nodes;
   const ir_edge_t *edge;
   pset *scheduled_nodes = pset_new_ptr_default();
 
@@ -95,12 +89,17 @@ int sched_verify(const ir_node *block)
   sched_foreach(block, irn)
     n++;
 
-  save_time_step = malloc(n * sizeof(save_time_step[0]));
+  if(n <= 0)
+    return 1;
+
+  save_time_step = xmalloc(n * sizeof(save_time_step[0]));
+  save_nodes = xmalloc(n * sizeof(save_nodes[0]));
 
   i = 0;
   sched_foreach(block, irn) {
     sched_info_t *info = get_irn_sched_info(irn);
     save_time_step[i] = info->time_step;
+    save_nodes[i] = (ir_node *)irn;
     info->time_step = i;
     pset_insert_ptr(scheduled_nodes, irn);
 
@@ -119,11 +118,12 @@ int sched_verify(const ir_node *block)
       ir_node *op = get_irn_n(irn, i);
 
       if(to_appear_in_schedule(op)
+          && !is_Phi(irn)
           && get_nodes_block(op) == block
           && sched_get_time_step(op) > step) {
 
           DBG((dbg_sched, LEVEL_DEFAULT,
-                "%n is operand of %n but scheduled after", op, irn));
+                "%+F: %+F is operand of %+F but scheduled after\n", block, op, irn));
           res = 0;
       }
     }
@@ -133,8 +133,9 @@ int sched_verify(const ir_node *block)
   for(i = 1; i < n; ++i) {
     if(save_time_step[i] - save_time_step[i - 1] <= 0) {
       DBG((dbg_sched, LEVEL_DEFAULT,
-            "position %d: time step shrinks (from %d to %d)\n",
-            i, save_time_step[i - 1], save_time_step[i]));
+            "%+F from %+F(%d) -> %+F(%d) step shrinks from %d -> %d\n",
+            block, save_nodes[i - 1], i - 1, save_nodes[i], i,
+            save_time_step[i - 1], save_time_step[i]));
       res = 0;
     }
   }
@@ -150,20 +151,26 @@ int sched_verify(const ir_node *block)
   foreach_out_edge(block, edge) {
     ir_node *irn = get_edge_src_irn(edge);
     if(to_appear_in_schedule(irn) && !pset_find_ptr(scheduled_nodes, irn))
-      DBG((dbg_sched, LEVEL_DEFAULT, "%+F is in block but not scheduled\n", irn));
+      DBG((dbg_sched, LEVEL_DEFAULT,
+            "%+F: %+F is in block but not scheduled\n", block, irn));
   }
 
   del_pset(scheduled_nodes);
   free(save_time_step);
+  free((void *) save_nodes);
   return res;
 }
 
-static void sched_verify_walker(ir_node *irn, void *data)
+/**
+ * Block-Walker: verify the current block and update the status
+ */
+static void sched_verify_walker(ir_node *block, void *data)
 {
   int *res = data;
-  *res &= sched_verify(irn);
+  *res &= sched_verify(block);
 }
 
+/* Verify the schedules in all blocks of the irg. */
 int sched_verify_irg(ir_graph *irg)
 {
   int res = 1;
@@ -171,3 +178,25 @@ int sched_verify_irg(ir_graph *irg)
 
   return res;
 }
+
+int sched_skip_cf_predicator(const ir_node *irn, void *data) {
+  arch_env_t *ae = data;
+  return arch_irn_classify(ae, irn) == arch_irn_class_branch;
+}
+
+int sched_skip_phi_predicator(const ir_node *irn, void *data) {
+       return is_Phi(irn);
+}
+
+ir_node *sched_skip(ir_node *from, int forward, sched_predicator_t *predicator, void *data)
+{
+       const ir_node *bl = get_block(from);
+       ir_node *curr;
+
+       if (is_Block(from))
+               from = forward ? sched_next(from) : sched_prev(from);
+
+       for(curr = from; curr != bl && predicator(curr, data); curr = forward ? sched_next(curr) : sched_prev(curr));
+
+       return curr;
+}