[RFC PATCH 0/9] CFG aware dwarf2 cfi generation

[Jan Hubicka]

> On 08/03/2011 01:24 PM, Jan Hubicka wrote:
> > Cool, will this also help to handle alternate entry points, so we can move ahead
> > on this area we got stuck years ago?  (i.e. add support for alternate entry points on
> > i386 skipping IP pointer load in PIC mode/using register passing conventions)
> 
> I honestly don't remember what happened with the alternate entry points.
> But if it was unwind info, then yes, this will help.

Well, as I remember, the basic infrastructure that allowed to introduce alternate entry points
late in the compilation (i.e. during prologue/epilogue generation) is in.  We just got stuck precisely
on making it working with the unwind info. (as I recall years back, Ihad patches that allowed us
to skip the IP load in PIC mode and planned to follow with the register calling conventions).

This is the -fPIC patch.
http://web.archiveorange.com/archive/v/iv9U0XRCHosZ5bDh6Z6Q
and this is apparently where we got stuck back then.
http://web.archiveorange.com/archive/v/iv9U0byrEj0gzOKGqTtx

Honza
> 
> 
> r~