972    int dummy_value_a;    // fix 'forbidden register spilled' error  in png_combine_row()  local
1104                   : "=a" (dummy_value_a),           // output regs (dummy)  in png_combine_row()
1277                   : "=a" (dummy_value_a),           // output regs (dummy)  in png_combine_row()
1412                   : "=a" (dummy_value_a),           // output regs (dummy)  in png_combine_row()
1728                   : "=a" (dummy_value_a),           // output regs (dummy)  in png_combine_row()
1918                   : "=a" (dummy_value_a),           // output regs (dummy)  in png_combine_row()
2275                png_bytep dummy_value_a;  in png_do_read_interlace()  local
2321                              "=a" (dummy_value_a),  in png_do_read_interlace()
2386                           "=a" (dummy_value_a)  in png_do_read_interlace()
2436                           "=a" (dummy_value_a)  in png_do_read_interlace()
3248    int dummy_value_a;  in png_read_filter_row_mmx_avg()  local
3462               "=a" (dummy_value_a)  in png_read_filter_row_mmx_avg()
3559               "=a" (dummy_value_a)  in png_read_filter_row_mmx_avg()
3617               "=a" (dummy_value_a)  in png_read_filter_row_mmx_avg()
3755               "=a" (dummy_value_a)  in png_read_filter_row_mmx_avg()
3851               "=a" (dummy_value_a)  in png_read_filter_row_mmx_avg()
3906               "=a" (dummy_value_a)  in png_read_filter_row_mmx_avg()
3975         "=a" (dummy_value_a),  in png_read_filter_row_mmx_avg()
4013    int dummy_value_a;  in png_read_filter_row_mmx_paeth()  local
4375               "=a" (dummy_value_a)  in png_read_filter_row_mmx_paeth()
4524               "=a" (dummy_value_a)  in png_read_filter_row_mmx_paeth()
4641               "=a" (dummy_value_a),  in png_read_filter_row_mmx_paeth()
4809               "=a" (dummy_value_a)  in png_read_filter_row_mmx_paeth()
4958               "=a" (dummy_value_a)  in png_read_filter_row_mmx_paeth()
5087         "=a" (dummy_value_a),  in png_read_filter_row_mmx_paeth()
5127    int dummy_value_a;  in png_read_filter_row_mmx_sub()  local
5242               "=a" (dummy_value_a)    // 3  in png_read_filter_row_mmx_sub()
5292               "=a" (dummy_value_a)    // 3  in png_read_filter_row_mmx_sub()
5331               "=a" (dummy_value_a)    // 3  in png_read_filter_row_mmx_sub()
5400               "=a" (dummy_value_a)    // 3  in png_read_filter_row_mmx_sub()
5450               "=a" (dummy_value_a)    // 3  in png_read_filter_row_mmx_sub()
5531               "=a" (dummy_value_a)    // 3  in png_read_filter_row_mmx_sub()
5583         "=a" (dummy_value_a),   // 2  in png_read_filter_row_mmx_sub()