This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: [PowerPC] PR23774 stack backchain broken saga
On Fri, Sep 09, 2005 at 05:03:48PM -0700, Richard Henderson wrote:
> On Sat, Sep 10, 2005 at 01:00:04AM +0930, Alan Modra wrote:
> > 2) Next, I defined parallels to keep things together. Like the
> > following, with another for DImode.
>
> This seems most reasonable to me.
>
> > This works, but doesn't give ideal power4/5 insn grouping, with (I
> > think) one too many nops being emitted.
>
> Who cares? This is after a longjmp isn't it?
Also stack deallocation when finished with alloca memory. For some
reason 4.0/4.1 doesn't combine this deallocation with stack adjustment
in the epilogue, a regression from 3.4.
--
Alan Modra
IBM OzLabs - Linux Technology Centre