https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85829
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-05-18
CC| |hubicka at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
It would be nice to have an examples where they are needed. The motivation to
disable them was optimization manuals claiming that Haswell+ handles partial
reg stalls better than old cores.
Also PARTIAL_REG_DEPENDENCY does not really fit the hardware design of cores
which are partial reg stall architecture. So in theory if we enable something
it should be the PARTIAL_REG_STALL flag.
