[LLVMdev] Complicated Remat Question

[David Greene]

On Friday 09 May 2008 14:49, Evan Cheng wrote:

> > So the real problem is that one of the operands of the remat def was
> > spilled.
> > Perhaps if that happens we mark registers using that remat def as not
> > rematable?
>
>   We only allow instructions without any register operand and / or a
> single pic base operand to be spilled. The later is a hack. :-) It's

Do you mean "remat" instead of "spill" here?  If so, I think I know what
the problem is.

> I am not sure how you run into this problem. Can you give an example
> using pseudo code so I can understand?

The problem is on our end.  We added FsMOVLDP and mistakenly marked 
it as rematable.

                                                     -Dave