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Re: question regarding regrename and failure of 950704-1.c on main branch


On Thu, May 09, 2002 at 04:49:55PM -0400, John David Anglin wrote:
> DI 22 overlaps DI 23.  There is no early clobber in the contraints for
> the pattern *pa.md:3828.
> 
> The failure started on or around April 30.  Is it now necessary to mark
> the output of DI mode arithmetic operations on 32-bit machines early
> clobber to prevent overlaps such as this?  Or, is this a regrename bug?

It has _always_ been necessary to mark registers that are
clobbered before all inputs have been consumed as earlyclobber.

How you've gotten away with it until now, I have no idea.


r~


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