64    this->base_mrf = -1;  in init()
964          if (base_mrf >= 0)  in size_read()
1142    if (base_mrf == -1)  in implied_mrf_writes()
3188          if (scan_inst->mlen > 0 && scan_inst->base_mrf != -1 &&  in compute_to_mrf()
3189              regions_overlap(fs_reg(MRF, scan_inst->base_mrf), scan_inst->mlen * REG_SIZE,  in compute_to_mrf()
3323    int base_mrf = 0;  in emit_repclear_shader()  local
3324    int color_mrf = base_mrf + 2;  in emit_repclear_shader()
3345       write->base_mrf = color_mrf;  in emit_repclear_shader()
3353          retype(brw_message_reg(base_mrf), BRW_REGISTER_TYPE_UD);  in emit_repclear_shader()
3365          write->base_mrf = base_mrf;  in emit_repclear_shader()
3430       if (inst->mlen > 0 && inst->base_mrf != -1) {  in remove_duplicate_mrf_writes()
3435 	    last_mrf_move[inst->base_mrf + i] = NULL;  in remove_duplicate_mrf_writes()
3735          inst->base_mrf = FIRST_PULL_LOAD_MRF(devinfo->gen) + 1;  in lower_uniform_pull_constant_loads()
4612       inst->base_mrf = 1;  in lower_fb_write_logical_send()
4761    inst->base_mrf = msg_begin.nr;  in lower_sampler_logical_send_gen4()
4855    inst->base_mrf = message.nr;  in lower_sampler_logical_send_gen5()
6000       inst->base_mrf = payload.nr;  in lower_varying_pull_constant_logical_send()
6011    inst->base_mrf = 2;  in lower_math_logical_send()
6032       bld.MOV(fs_reg(MRF, inst->base_mrf + 1, src1.type), src1);  in lower_math_logical_send()