On Mon, Oct 15, 2012 at 7:45 PM, Eric Botcazou wrote: > This extends the lifetime of the hard register up to the beginning of the > function, causing reload to die on the complex division instruction.
Does this still happen after my patch from yesterday to use DF_LIVE in IRA? > The attached patch prevents the invariant from being hoisted in this very > particular case. Any better idea? Maybe add a cost-free dependency on the clobber, so that it's moved with the insn? And/or maybe punt on all likely_spilled hard registers if -fira-loop-pressure is not in effect, it's unlikely to be a win in any case. Ciao! Steven
