Due to the way the code is written this optimization causes the compiler to waster a lot of time on useless optimizations.
Yep. Note that the gcc upstream recommendation is to only bother using -fipa-pta (as it is currently implemented, anyway) on packages where it's been benchmarked to be worth it, given the compile time impact is so dreadful. Anyway, I'll add that in as it's cheap, just keep that in mind.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=68ed17b3a3185390ee87d59080ab7988cf038a93 commit 68ed17b3a3185390ee87d59080ab7988cf038a93 Author: Sam James <sam@gentoo.org> AuthorDate: 2023-12-16 03:08:00 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2023-12-16 03:08:10 +0000 app-doc/doxygen: filter -fipa-pta Very slow to compile and not worth it here. Closes: https://bugs.gentoo.org/920092 Signed-off-by: Sam James <sam@gentoo.org> app-doc/doxygen/doxygen-1.9.8.ebuild | 2 ++ 1 file changed, 2 insertions(+) Additionally, it has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=712f6dc0926c54896d6c0717b2c8ccc4d38af2d4 commit 712f6dc0926c54896d6c0717b2c8ccc4d38af2d4 Author: Sam James <sam@gentoo.org> AuthorDate: 2023-12-16 03:07:01 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2023-12-16 03:08:09 +0000 app-doc/doxygen: improve -O2 forcing No idea why this is there but improve the output (less noisy) and add a TODO comment. Bug: https://bugs.gentoo.org/920092 Signed-off-by: Sam James <sam@gentoo.org> app-doc/doxygen/doxygen-1.9.8.ebuild | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)
