Unresolved should_be_same constraint => panic

diff --git a/ir/be/ia32/ia32_finish.c b/ir/be/ia32/ia32_finish.c
index 3b2d8f6..66508b1 100644 (file)
--- a/ir/be/ia32/ia32_finish.c
+++ b/ir/be/ia32/ia32_finish.c
@@ -260,10 +260,6 @@ static void assure_should_be_same_requirements(ir_node *node)
        for (i = 0; i < n_res; i++) {
                int                          i2, arity;
                int                          same_pos;
-               ir_node                     *perm;
-               ir_node                     *in[2];
-               ir_node                     *perm_proj0;
-               ir_node                     *perm_proj1;
                ir_node                     *uses_out_reg;
                const arch_register_req_t   *req = arch_get_out_register_req(node, i);
                const arch_register_class_t *cls;
@@ -342,38 +338,7 @@ static void assure_should_be_same_requirements(ir_node *node)
                        continue;
                }
 
-#ifdef DEBUG_libfirm
-               ir_fprintf(stderr, "Note: need perm to resolve should_be_same constraint at %+F (this is unsafe and should not happen in theory...)\n", node);
-#endif
-               /* the out reg is used as node input: we need to permutate our input
-                * and the other (this is allowed, since the other node can't be live
-                * after! the operation as we will override the register. */
-               in[0] = in_node;
-               in[1] = uses_out_reg;
-               perm  = be_new_Perm(cls, block, 2, in);
-
-               perm_proj0 = new_r_Proj(perm, get_irn_mode(in[0]), 0);
-               perm_proj1 = new_r_Proj(perm, get_irn_mode(in[1]), 1);
-
-               arch_set_irn_register(perm_proj0, out_reg);
-               arch_set_irn_register(perm_proj1, in_reg);
-
-               sched_add_before(node, perm);
-
-               DBG((dbg, LEVEL_1,
-                       "created perm %+F for should be same argument at input %d of %+F (need permutate with %+F)\n",
-                       perm, same_pos, node, uses_out_reg));
-
-               /* use the perm results */
-               for (i2 = 0; i2 < arity; ++i2) {
-                       ir_node *in = get_irn_n(node, i2);
-
-                       if (in == in_node) {
-                               set_irn_n(node, i2, perm_proj0);
-                       } else if (in == uses_out_reg) {
-                               set_irn_n(node, i2, perm_proj1);
-                       }
-               }
+               panic("Unresolved should_be_same constraint");
        }
 }