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Re: GCC 4.2/4.3 Status Report (2006-10-17)
- From: Geoffrey Keating <geoffk at apple dot com>
- To: Mark Mitchell <mark at codesourcery dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: 18 Oct 2006 11:18:21 -0700
- Subject: Re: GCC 4.2/4.3 Status Report (2006-10-17)
- References: <45359552.6070208@codesourcery.com>
Mark Mitchell <mark@codesourcery.com> writes:
> IMA for C++ is another difficult case. This is unambiguously useful,
> though duplicative of what we're trying to build with LTO.
Although there are some things you can do with LTO that you can also
do with IMA, there are many things that you can do with one but not
with the other.
For example, I don't believe LTO will give any compilation speed benefits
at -O0.
I also think that LTO won't be useful in implementing 'export',
although obviously that depends on what the final design looks like.