[PATCH, rs6000] Fix PR72827 (ada bootstrap failure)

Bill Schmidt wschmidt@linux.vnet.ibm.com
Wed Aug 31 16:13:00 GMT 2016

> On Aug 31, 2016, at 10:31 AM, Eric Botcazou <ebotcazou@adacore.com> wrote:
>> I'm not sure I'm the right person to do that, as I don't really have any
>> familiarity with the DSE code.  I can't even prove to myself that this code
>> is alloca-safe; it doesn't look like it.
> No FUD, please ;-)  The code is alloca-safe, alloca is about moving the stack 
> pointer, not the frame pointer.  The compiler wouldn't be able to compile a 
> simple Ada program with optimization enabled if that wasn't the case.

Heh, not my intent. :)  The alloca code was hiding off in cselib anyway...as
I said, I don't have any familiarity here...  

> -- 
> Eric Botcazou

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