mem = new_r_Proj(irn, mode_M, pn_Load_M);
exc = new_r_Proj(irn, mode_X, pn_Load_X_except);
reg = new_r_Proj(irn, mode_X, pn_Load_X_regular);
mem = new_r_Proj(irn, mode_M, pn_Load_M);
exc = new_r_Proj(irn, mode_X, pn_Load_X_except);
reg = new_r_Proj(irn, mode_X, pn_Load_X_regular);