PERF: regression from 0.10.1
f6ac8c091dfb2bbbbb02a34c13022c5427b290eb to 05a737dbb9f857e25a211739d90c42f3d9428b8e

Bad news:

```
Results:
                                            t_head  t_baseline      ratio
name                                                                     
reindex_frame_level_reindex                 1.1343      0.7571     1.4982
reindex_frame_level_align                   1.1690      0.7548     1.5488
```

Good news:

```
Results:
                                            t_head  t_baseline      ratio
name                                                                     
frame_get_dtype_counts                      0.0968    208.6380     0.0005
frame_wide_repr                             0.5321    207.0730     0.0026
groupby_first_float32                       3.0386    336.2439     0.0090
groupby_last_float32                        3.2206    335.2571     0.0096
frame_to_csv2                             181.1550   2188.9260     0.0828
indexing_dataframe_boolean                 12.9179    125.7350     0.1027
write_csv_standard                         36.3702    230.9210     0.1575
frame_reindex_axis0                         0.3122      1.0984     0.2842
frame_to_csv_mixed                        340.1070   1091.9340     0.3115
frame_to_csv                              106.5671    219.1830     0.4862
frame_add                                  22.0693     34.1867     0.6456
frame_mult                                 22.0064     33.9859     0.6475
frame_reindex_upcast                       11.4179     17.3291     0.6589
frame_fancy_lookup_all                     14.3931     20.5621     0.7000
series_string_vector_slice                148.3371    195.5922     0.7584
```

???

```
frame_reindex_axis1                         2.3612      2.3386     1.0097
```

Fixed:

```
indexing_dataframe_boolean_rows             0.2180      0.1953     1.1164
```
