https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83738
Georg-Johann Lay <gjl at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-01-08
Ever confirmed|0 |1
--- Comment #1 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Currently we are saving all used callee-saved registers in main which is
overhead. It can be mitigated by attribute OS_main, but we could skip saving
them per default. Not even the test suite (where flow drops out of main) needs
saving these regs.
