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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 /lib/compiler/src/cerl.erl | |
| 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 'lib/compiler/src/cerl.erl')
| -rw-r--r-- | lib/compiler/src/cerl.erl | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/compiler/src/cerl.erl b/lib/compiler/src/cerl.erl index 3d4b9ee0c6..8367a1e19e 100644 --- a/lib/compiler/src/cerl.erl +++ b/lib/compiler/src/cerl.erl @@ -138,7 +138,8 @@ ]). -export_type([c_binary/0, c_bitstr/0, c_call/0, c_clause/0, c_cons/0, c_fun/0, - c_literal/0, c_map/0, c_map_pair/0, c_module/0, c_tuple/0, + c_let/0, c_literal/0, c_map/0, c_map_pair/0, + c_module/0, c_tuple/0, c_values/0, c_var/0, cerl/0, var_name/0]). -include("core_parse.hrl"). |