| njn | e1b349b | 2005-11-28 17:32:49 +0000 | [diff] [blame] | 1 | ----------------------------------------------------------------------------- |
| 2 | Notes on performance |
| 3 | ----------------------------------------------------------------------------- |
| 4 | The intent of this file is to record progress in improving performance. |
| 5 | |
| 6 | ----------------------------------------------------------------------------- |
| 7 | Just before 3.1.0: |
| 8 | - Julian made LibVEX_Alloc() inlinable. Saved a couple of percent. |
| 9 | - Julian started building Vex at -O2. Saved up to 8% or so(?) in some |
| 10 | cases. |
| 11 | |
| 12 | Post 3.1.0: |
| 13 | - Julian made the tree builder linear. Saved 2--13% on a range of programs. |
| 14 | |
| 15 | COMPVBITS branch: |
| 16 | - Nick converted to compress V bits, initial version saved 0--5% on most |
| njn | 47fb650 | 2005-12-02 23:09:49 +0000 | [diff] [blame] | 17 | cases, with a 30% improvement on one case (tsim_arch) which calls |
| njn | e1b349b | 2005-11-28 17:32:49 +0000 | [diff] [blame] | 18 | set_address_range_perms() a lot. |
| njn | 47fb650 | 2005-12-02 23:09:49 +0000 | [diff] [blame] | 19 | - Nick rewrote set_address_range_perms(), which gained 0--3% typically, |
| 20 | and 22% on tsim_arch. |
| njn | e1b349b | 2005-11-28 17:32:49 +0000 | [diff] [blame] | 21 | |