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Re: Performance comparison

From: Bryce McKinlay <bryce at waitaki dot otago dot ac dot nz>
To: Norman Hendrich <hendrich at informatik dot uni-hamburg dot de>
Cc: java at gcc dot gnu dot org
Date: Tue, 30 Jul 2002 13:17:30 +1200
Subject: Re: Performance comparison
References: <200207290903.g6T93W4Z009062@rzdspc1.informatik.uni-hamburg.de>

Norman Hendrich wrote:

I suspect that gcj is possibly just missing to inline one or two
critical functions.

Right, in fact currently GCJ does no inlining at all. Inlining will certainly improve performance significantly (depending on the application) if it is done well.

Any other compiler options I should try?

-finline-functions can still be used to turn on the old inliner. That code is not smart and will miss many inline opportunities, but it might still be interesting to see if it makes a difference to your application.

regards

Bryce.

References:
- Performance comparison
  - From: Norman Hendrich

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