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| author | Björn Gustavsson <[email protected]> | 2014-12-31 11:11:57 +0100 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2015-03-09 09:59:37 +0100 |
| commit | e914206e11b439a5794b7a8c3c527af395609ddd (patch) | |
| tree | 7d790e2af9194479b42a753e453a00b92086ef93 /erts | |
| parent | 4f365a9b80bab48c4478a6910624244f88637bcb (diff) | |
| download | otp-e914206e11b439a5794b7a8c3c527af395609ddd.tar.gz otp-e914206e11b439a5794b7a8c3c527af395609ddd.tar.bz2 otp-e914206e11b439a5794b7a8c3c527af395609ddd.zip | |
sys_core_fold: Improve optimization of 'not'
Optimize away 'not' in sys_core_fold instead of in beam_block
and beam_dead, as we can do a better job in sys_core_fold.
I modified the test suite temporarily to never turn off Core Erlang
modifications and looked at the coverage. With the new optimizations
active in sys_core_fold, the code in beam_block and beam_dead did not
find a single 'not' that it could optimize. That proves that the new
optimization is at least as good as the old one. Manually, I could
also verify that the new optimization would optimize some variations
of 'not' that the old one would not handle.
Diffstat (limited to 'erts')
0 files changed, 0 insertions, 0 deletions