https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110007
Richard Biener changed:
What|Removed |Added
Version|unknown |14.0
Severity|normal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110007
--- Comment #8 from Richard Yao ---
(In reply to Alexander Monakov from comment #6)
> Are you sure the branch is unpredictable in your micro-benchmark? If you
> have repeated runs you'll train the predictors.
(In reply to Jan Hubicka from comme
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110007
Jan Hubicka changed:
What|Removed |Added
CC||hubicka at gcc dot gnu.org
--- Comment #7
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110007
Alexander Monakov changed:
What|Removed |Added
CC||amonakov at gcc dot gnu.org
--- Com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110007
--- Comment #5 from Richard Yao ---
(In reply to Andrew Pinski from comment #4)
> (In reply to Richard Yao from comment #3)
> > (In reply to Andrew Pinski from comment #2)
> > > (In reply to Richard Yao from comment #0)
> > > > Having the abilit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110007
--- Comment #4 from Andrew Pinski ---
(In reply to Richard Yao from comment #3)
> (In reply to Andrew Pinski from comment #2)
> > (In reply to Richard Yao from comment #0)
> > > Having the ability to specify __builtin_unpredictable() as a hint t
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110007
--- Comment #3 from Richard Yao ---
(In reply to Andrew Pinski from comment #2)
> (In reply to Richard Yao from comment #0)
> > Having the ability to specify __builtin_unpredictable() as a hint to
> > encourage the compiler to use cmov would be
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110007
--- Comment #2 from Andrew Pinski ---
(In reply to Richard Yao from comment #0)
> Having the ability to specify __builtin_unpredictable() as a hint to
> encourage the compiler to use cmov would be useful for implementing
> algorithms like binary
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110007
--- Comment #1 from Andrew Pinski ---
Note x86 backend still will reject if there are two cmovs close to another
because of some cores are much worse with 2 close to another another.
