Re: [rs6000] Fix PR 50906, eh_frame and other woes

[Olivier Hainque <hainque at adacore dot com>]

On Nov 17, 2011, at 20:46 , David Edelsohn wrote:

> Coincidentally, IBM's XL compiler is encountering a similar issue and
> proposing a similar solution of having the stack pointer update
> conflict with all memory accesses.

 Interesting timing :-)

> I think all these corner cases
> confirm that it is impractical for the compiler to track all accesses
> against SP and the only expedient solution is a hammer like
> conflicting with all memory.

 OK, I'll come up with a patch. I'll compare the generated assembly for
 the Ada runtime lib with and without the change. That should be easy to
 do and will provide a datapoint.

 Thanks for your feedback.

 Olivier