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Re: Symbol visibility for gcj

From: David Daney <ddaney at avtrex dot com>
To: Andrew Haley <aph at redhat dot com>
Cc: gcc-patches at gcc dot gnu dot org, java-patches at gcc dot gnu dot org
Date: Fri, 23 Mar 2007 11:46:58 -0700
Subject: Re: Symbol visibility for gcj
References: <17924.6636.434128.707456@zebedee.pink>

Andrew Haley wrote:

This changes the symbol export rules for gcj-built DSOs.  We no longer
output symbols for:

private static methods
private static fields
private classes
vtables (except java.lang.Class)
class$$ fields

This reduces the number of symbols in libgcj.so from 87509 to 66209, a
saving of 20%.

Does that really matter? I suppose it might reduce the number of pages that are faulted in when the dynamic linker is working because the interesting symbols would be spread across fewer pages.

How does your change affect the number of relocations in libgcj.so or the values returned by size?

David Daney

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