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Message-ID: <3db9f87f0712170206l1f84382bqe0b3b72cb837450e@mail.gmail.com>
Date: Mon, 17 Dec 2007 18:06:30 +0800
From: "Simon Chow" <simon.harmony@gmail.com>
To: dev@harmony.apache.org
Subject: Re: [drlvm][jitrino]A question of pipeline and method filter
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Thank you very much!

So users should choose pipeline for methods before execution, isn't it?
Then I wants to know how to build a pipeline with the most efficient
compilation result of a specified method. Does it rely on the developer's
experience?


On 17/12/2007, Mikhail Fursov <mike.fursov@gmail.com> wrote:
>
> Hi Simon,
> On Dec 17, 2007 2:35 PM, Simon Chow <simon.harmony@gmail.com> wrote:
>
> > First, I am just a beginner for OPT.
> > I find a file named opt.emconf in default vm. Is it the default
> > configuration of compilation pipeline in OPT?
> >
>
> Yes, this configuration file is used when you pass -Xem:opt option to VM.
> 'opt' here is the name of the file. You can specify the full path to your
> custom configuration file with -Xem option or put it into 'bin/default'
> directory and use the filename only (file extension is optional).
>
>
> >
> > My question is that, Is Harmony VM able to change the pipeline or method
> > filters at runtime?
> > i.e. Could I specify a pipeline(named P) to a method (named M)
> > dynamically?
> >
>
> You can't change JIT configuration in runtime but you can use command line
> to override any of existing "-XX" option stored in emconf file at startup.
> The format is the same as in emconf - you can just copy it and use in
> command line.
>
>
> --
> Mikhail Fursov
>


-- 
>From : Simon.Chow@Software School of Fudan University

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