- if(op->has_constraints && values_interfere(env->lv, insn->irn, op->carrier) && bitset_popcnt(tmp) > 0) {
- /*
- only create the copy if the operand is no copy.
- this is necessary since the assure constraints phase inserts
- Copies and Keeps for operands which must be different from the results.
- Additional copies here would destroy this.
- */
- if(!be_is_Copy(op->carrier)) {
- ir_node *copy = be_new_Copy(env->cls, env->irg, bl, op->carrier);
-
- sched_add_before(insn->irn, copy);
- set_irn_n(insn->irn, op->pos, copy);
- DBG((env->dbg, LEVEL_3, "inserting constr copy %+F for %+F pos %d\n", copy, insn->irn, op->pos));
- be_liveness_update(env->lv, op->carrier);
- }
- }
+ if(!op->has_constraints ||
+ !values_interfere(birg, insn->irn, op->carrier) ||
+ bitset_popcnt(tmp) == 0)
+ continue;
+
+ /*
+ only create the copy if the operand is no copy.
+ this is necessary since the assure constraints phase inserts
+ Copies and Keeps for operands which must be different from the
+ results. Additional copies here would destroy this.
+ */
+ if (be_is_Copy(get_irn_n(insn->irn, op->pos)))
+ continue;
+
+ copy = be_new_Copy(env->cls, env->irg, bl, op->carrier);
+
+ sched_add_before(insn->irn, copy);
+ set_irn_n(insn->irn, op->pos, copy);
+ DBG((dbg, LEVEL_3, "inserting constr copy %+F for %+F pos %d\n", copy, insn->irn, op->pos));
+ be_liveness_update(lv, op->carrier);