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Re: Combine four insns
Steven Bosscher <firstname.lastname@example.org> writes:
> On Tue, Aug 10, 2010 at 4:39 PM, Richard Guenther
> <email@example.com> wrote:
>> You could enable the heuristic with optimize < 3 && !optimize_size
>> (thus keep combining everything at -O3 and -Os).
> Better s/optimize_size/optimize_bb_for_size(BLOCK_FOR_INSN (i0))/
That would mean that a -O2 build where all BBs are cold for some
reason would be 1% slower, right?
To be honest I didn't fully understand why it's ok for -Os
to be 1% slower. A lot of people use -Os.
It seems more like a -O3 only thing for me.
firstname.lastname@example.org -- Speaking for myself only.