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From Stefano Mazzocchi <stef...@apache.org>
Subject Re: [jira] Created: (HARMONY-2778) [drlvm][jitrino] Inlining of API methods as magics. Platform dependent part of the framework.
Date Mon, 18 Dec 2006 16:31:59 GMT
Mikhail Fursov (JIRA) wrote:
> [drlvm][jitrino] Inlining of API methods as magics. Platform dependent part of the framework.
> ---------------------------------------------------------------------------------------------
> 
>                  Key: HARMONY-2778
>                  URL: http://issues.apache.org/jira/browse/HARMONY-2778
>              Project: Harmony
>           Issue Type: Improvement
>           Components: DRLVM
>             Reporter: Mikhail Fursov
> 
> 
> This patch introduces a framework to replace known JAVA API calls with fast native platform
dependent instruction sequences.
> 
> The patch contains:
> 1) Inlining of Long/Integer bits manipulation methods for IA32/EM64T platform (these
methods are hot in SpecJBB2005).
> 2) BSF inst implementation in encoder
> 3) The fix ControlFlowGraph.cpp for the problem revealed by this patch.
> 4) Refactoring of the inliner's method table. The method_table code now uses MemoryManager
and all memory leaks found are fixed.

Nice!

What is the performance improvement that you have noticed?

-- 
Stefano.


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