X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fopt%2Ftailrec.c;h=57a28f40a5be85e43d79347bc35922d6677de32c;hb=9146b50286358b71f99756e570baf3884709e7ef;hp=bf9e48f1913b247536c31f27defcbe395601e3ae;hpb=dddcc630819f338c3b45e2bc646233e6872d5bb6;p=libfirm

diff --git a/ir/opt/tailrec.c b/ir/opt/tailrec.c
index bf9e48f19..57a28f40a 100644
--- a/ir/opt/tailrec.c
+++ b/ir/opt/tailrec.c
@@ -24,9 +24,10 @@
 #include "irgraph_t.h"
 #include "ircons.h"
 #include "irflag.h"
-#include "tv.h"
 #include "firmstat.h"
 
+static int n_opt_applications = 0;
+
 /**
  * the environment for colelcting data
  */
@@ -190,6 +191,8 @@ static void do_opt_tail_rec(ir_graph *irg, ir_node *rets, int n_tail_calls)
     in[i] = get_Call_mem(calls);
     ++i;
   }
+  assert(i == n_tail_calls + 1);
+
   phis[0] = new_rd_Phi(NULL, irg, block, n_tail_calls + 1, in, mode_M);
 
   /* build the data phi's */
@@ -252,8 +255,7 @@ void opt_tail_rec_irg(ir_graph *irg)
   n_preds = get_Block_n_cfgpreds(end_block);
   for (i = 0; i < n_preds; ++i) {
     ir_node *ret = get_Block_cfgpred(end_block, i);
-    ir_node *proj_m, *call, *call_ptr;
-    tarval *tv;
+    ir_node *call, *call_ptr;
     entity *ent;
     int j, n_ress;
     ir_node **ress;
@@ -263,12 +265,7 @@ void opt_tail_rec_irg(ir_graph *irg)
       continue;
 
     /* check, if it's a Return self() */
-    proj_m = get_Return_mem(ret);
-
-    if (get_irn_op(proj_m) != op_Proj)
-      continue;
-
-    call = get_Proj_pred(proj_m);
+    call = skip_Proj(get_Return_mem(ret));
     if (get_irn_op(call) != op_Call)
       continue;
 
@@ -278,6 +275,9 @@ void opt_tail_rec_irg(ir_graph *irg)
     if (get_irn_op(call_ptr) != op_SymConst)
       continue;
 
+    if (get_SymConst_kind(call_ptr) != symconst_addr_ent)
+      continue;
+
     ent = get_SymConst_entity(call_ptr);
     if (!ent || get_entity_irg(ent) != irg)
       continue;
@@ -287,23 +287,7 @@ void opt_tail_rec_irg(ir_graph *irg)
     ress = get_Return_res_arr(ret);
 
     for (j = 0; j < n_ress; ++j) {
-      ir_node *proj = ress[j];
-      ir_node *proj_proj;
-      ir_node *irn;
-
-      if (get_irn_op(proj) != op_Proj) {
-	/* not routed to a call */
-	break;
-      }
-
-      proj_proj = get_Proj_pred(proj);
-
-      if (get_irn_op(proj) != op_Proj) {
-	/* not routed to a call */
-	break;
-      }
-
-      irn = get_Proj_pred(proj_proj);
+      ir_node *irn = skip_Proj(skip_Proj(ress[j]));
 
       if (irn != call) {
 	/* not routed to a call */
@@ -327,6 +311,11 @@ void opt_tail_rec_irg(ir_graph *irg)
   if (! n_tail_calls)
     return;
 
+  if (get_opt_tail_recursion_verbose() && get_firm_verbosity() > 1)
+    printf("  Performing tail recursion for graph %s and %d Calls\n",
+	   get_entity_ld_name(get_irg_entity(irg)), n_tail_calls);
+  n_opt_applications++;
+
   do_opt_tail_rec(irg, rets, n_tail_calls);
 }
 
@@ -340,9 +329,14 @@ void opt_tail_recursion(void)
   if (! get_opt_tail_recursion() || ! get_opt_optimize())
     return;
 
+  n_opt_applications = 0;
+
   for (i = 0; i < get_irp_n_irgs(); i++) {
     current_ir_graph = get_irp_irg(i);
 
     opt_tail_rec_irg(current_ir_graph);
   }
+
+  if (get_opt_tail_recursion_verbose())
+    printf("Performed tail recursion for %d of %d graphs\n", n_opt_applications, get_irp_n_irgs());
 }