[Bug rtl-optimization/69847] Spec 2006 403.gcc slows down with -mlra vs. reload on PowerPC

[ramana at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69847

--- Comment #18 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
(In reply to Bill Schmidt from comment #17)
> Vlad, the patch checks out very well on powerpc64le.  403.gcc no longer
> degrades.  We are seeing some very nice improvements from LRA over reload on
> a few benchmarks (435.gromacs leads the way with +9.5%).  Everything in
> CPU2006 is positive or noise except for 401.bzip2, which shows about a 2%
> degradation.  We'll look into that separately to see if it's real and open
> another bug if there is anything to report.
> 
> Once the patch is in place, I think we will be ready to switch the POWER
> server targets to use LRA by default.
> 
> Thanks!  Excellent results.
> 
> Bill

We'll look at what this does on AArch64 and feedback on this thread.