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| author | Martin Jambor <mjambor@suse.cz> | 2021-11-19 18:46:00 +0100 |
|---|---|---|
| committer | Martin Jambor <mjambor@suse.cz> | 2021-11-19 18:46:08 +0100 |
| commit | 458d2c689963d8461d84670a3d8988cd6ecbfd81 (patch) | |
| tree | b8ec5d2ae9baec63f98dd08e1075b35e6cfaca9d /libgcc | |
| parent | ada63d56beb0e535d35b165b55f85e29a0b36929 (diff) | |
| download | gcc-458d2c689963d8461d84670a3d8988cd6ecbfd81.zip gcc-458d2c689963d8461d84670a3d8988cd6ecbfd81.tar.gz gcc-458d2c689963d8461d84670a3d8988cd6ecbfd81.tar.bz2 | |
options: Make -Ofast switch off -fsemantic-interposition
Using -fno-semantic-interposition has been reported by various people
to bring about considerable speed up at the cost of strict compliance
to the ELF symbol interposition rules See for example
https://fedoraproject.org/wiki/Changes/PythonNoSemanticInterpositionSpeedup
As such I believe it should be implied by our -Ofast optimization
level, not only so that benchmarks that can benefit run faster, but
also so that people looking at -Ofast documentation for options that
could speed their programs find it.
gcc/ChangeLog:
2021-11-12 Martin Jambor <mjambor@suse.cz>
* opts.c (default_options_table): Switch off
flag_semantic_interposition at Ofast.
* doc/invoke.texi (Optimize Options): Document that Ofast switches off
-fsemantic-interposition.
Diffstat (limited to 'libgcc')
0 files changed, 0 insertions, 0 deletions