Re: [HACKERS] Sun performance - Major discovery!

On Wed, Oct 08, 2003 at 02:31:29PM -0400, Bruce Momjian wrote:
> Well, this is really embarassing. I can't imagine why we would not set
> at least -O on all platforms. Looking at the template files, I see
> these have no optimization set:

I think gcc _used_ to generate bad code on SPARC if you set any
optimisation. We tested it on Sol7 with gcc 2.95 more than a year
ago, and tried various settings. -O2 worked, but other items were
really bad. Some of them would pass regression but cause strange
behaviour, random coredumps, &c. A little digging demonstrated that
anything beyond -O2 just didn't work for gcc at the time.

A

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