[Bug c++/15815] Update #pragma interface and #pragma implementation documentation.

["jason at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From jason at redhat dot com  2004-06-10 17:35 -------
Subject: Re:  Update #pragma interface and #pragma
 implementation documentation.

On 10 Jun 2004 15:59:03 -0000, "larsbj at gullik dot net" <gcc-bugzilla@gcc.gnu.org> wrote:

> All pragmas removed:
>    text    data     bss     dec     hex filename
> 2792162   80600   48796 2921558  2c9456 src/lyx
> -rwxrwxr-x    1 larsbj   larsbj   74322762 Jan  4 00:14 src/lyx
>
> Pragmas in place:
>    text    data     bss     dec     hex filename
> 2812994   80600   48800 2942394  2ce5ba src/lyx
> -rwxrwxr-x    1 larsbj   larsbj   70111256 Jan  4 01:01 src/lyx

Interesting that text size is smaller without the #pragmas, but file size
is larger.  My guess is that the difference in text size is due to always
emitting an out-of-line version of functions which would otherwise always
be inlined, and that the difference in file size is due to debug info
following the #pragmas.  I'm not sure why there would be so much difference
in debug info; perhaps there are a bunch of types which have no key method?

Or perhaps this is a case of duplicate debug info not being discarded.  We
should really move debug info into a comdat group with the function it
corresponds to.

Jason


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15815