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Re: Scheduler:LLVM vs gcc, which is better

On Mon, Mar 10, 2014 at 07:11:43PM -0700, Chandler Carruth wrote:
> On Mon, Mar 10, 2014 at 6:59 PM, lin zuojian <> wrote:
> >
> > Hi,
> >     I read LLVM code for a while,and a question raise:Whose scheduler is
> >     better?
> >     LLVM brings in the DAG,and make it look important just like IR or
> >     MachineInst.But is that necessary?I don't see what kind of problem
> >     it tries to solve.
> >     From the pipeline of the compiler, LLVM can not do sched2.Is that
> >     suck?
> I clearly can't speak for GCC developers, but as an LLVM developer I
> have to say, this seems like a (somewhat rudely phrased) question for
> the LLVM mailing lists where there are people more familiar with the
> LLVM internals. Happy to reply in more depth there (or here if folks
> are actually interested).
    I just ask for opinions.I think many GCC developers do familiar with
    the opponent.If I ask in the LLVM mailing list, I have to worry
    about If they are familiar with GCC, too(what's sched2 pass?).
lin zuojian 

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