fixed calculation of inverse operations

diff --git a/ir/be/ia32/bearch_ia32.c b/ir/be/ia32/bearch_ia32.c
index 2367605..eb24623 100644 (file)
--- a/ir/be/ia32/bearch_ia32.c
+++ b/ir/be/ia32/bearch_ia32.c
@@ -50,6 +50,7 @@
 #include "ia32_x87.h"
 #include "ia32_dbg_stat.h"
 #include "ia32_finish.h"
+#include "ia32_util.h"
 
 #define DEBUG_MODULE "firm.be.ia32.isa"
 
@@ -587,8 +588,8 @@ static arch_inverse_t *ia32_get_inverse(const void *self, const ir_node *irn, in
                        }
                        else {
                                /* normal add: inverse == sub */
-                               ir_node  *proj = get_irn_out_edge_first(irn)->src;
-                               assert(proj && is_Proj(proj));
+                               ir_node *proj = ia32_get_res_proj(irn);
+                               assert(proj);
 
                                inverse->nodes[0] = new_rd_ia32_Sub(NULL, irg, block, noreg, noreg, proj, get_irn_n(irn, i ^ 1), nomem);
                                pnc               = pn_ia32_Sub_res;
@@ -606,8 +607,8 @@ static arch_inverse_t *ia32_get_inverse(const void *self, const ir_node *irn, in
                        }
                        else {
                                /* normal sub */
-                               ir_node  *proj = get_irn_out_edge_first(irn)->src;
-                               assert(proj && is_Proj(proj));
+                               ir_node *proj = ia32_get_res_proj(irn);
+                               assert(proj);
 
                                if (i == 2) {
                                        inverse->nodes[0] = new_rd_ia32_Add(NULL, irg, block, noreg, noreg, proj, get_irn_n(irn, 3), nomem);
@@ -635,22 +636,23 @@ static arch_inverse_t *ia32_get_inverse(const void *self, const ir_node *irn, in
                        }
                        break;
                case iro_ia32_Not: {
-                       ir_node  *proj = get_irn_out_edge_first(irn)->src;
-                       assert(proj && is_Proj(proj));
+                       ir_node *proj = ia32_get_res_proj(irn);
+                       assert(proj);
 
                        inverse->nodes[0] = new_rd_ia32_Not(NULL, irg, block, noreg, noreg, proj, nomem);
                        pnc = pn_ia32_Not_res;
                        inverse->costs   += 1;
                        break;
                }
-               case iro_ia32_Minus:
-                       ir_node  *proj = get_irn_out_edge_first(irn)->src;
-                       assert(proj && is_Proj(proj));
+               case iro_ia32_Minus: {
+                       ir_node *proj = ia32_get_res_proj(irn);
+                       assert(proj);
 
                        inverse->nodes[0] = new_rd_ia32_Minus(NULL, irg, block, noreg, noreg, proj, nomem);
-                       pnc = pn_ia32_Minus_res;
+                       pnc               = pn_ia32_Minus_res;
                        inverse->costs   += 1;
                        break;
+               }
                default:
                        /* inverse operation not supported */
                        return NULL;