GCC Status Report (2004年09月13日) [--enable-mapped-location]

Thu Sep 16 18:07:00 GMT 2004

Per Bothner wrote:
> That brings us to the Big Question: with C, C++, Fortran, Java, and
> Objc (I think - needs testing) all handling --enable-mapped-location,
> we may consider making it the default for 4.0.

If it works, and is efficient, I think that would make sense. That was 
certainly my goal in including your project in the timeline.
> (Converting Ada is
> not done, but it doesn't look like a major job.) That assumes I get
> help fixing a few minor regressions. The advantage of doing that is
> of course is that we don't have to fight against with rot with
> --enable-mapped-location. Since I have limited volunteer time to
> spend on Gcc, I really don't want to be responsible for making
> sure other people's check-ins don't break --enable-mapped-location
> for as long as stage3 lasts.

I think there's an even bigger question: if --enable-mapped-location 
works, why have it be an option? Why not just have it on all the time?
Do you have any performance measurements with the option enabled at this 
point?
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Mark Mitchell
CodeSourcery, LLC
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mark@codesourcery.com