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Re: [PATCH] combine: Special handling for conditional refs when creating log links
Hi,
On Fri, 7 May 2010, Andreas Krebbel wrote:
> > No. Not at all. Never were, probably never will be. One major problem
> > is that reload doesn't know how to spill from COND_EXEC insns, but
> > apart from that, there are just no passes that would know what to do
> > with COND_EXEC insns and all of them would have to be modified.
>
> Ok. This then should be part of the documentation:
I'm not sure at all if the assertions in this thread were entirely
correct. flow.c did handle conditional execution, hence also conditional
liveness, also of pseudos. So if anything, the above is a new restriction
since introduction of the DF framework.
Ciao,
Michael.