On Thu, Jan 09, 2014 at 09:02:28AM +0000, Richard Sandiford wrote:
> It looks like a correct fix, but the memcpy is going to be pretty
> expensive, since in most cases there will be no difference.
Perhaps we should add another tree code, which would represent the
combination of TARGET_OPTION_NODE and OPTIMIZATION_NODE, FUNCTION_DECL
would then refer to this combo node only and that new tree would
refer to both TARGET_OPTION_NODE and OPTIMIZATION_NODE.
That way we could stick the saved optabs into the new node rather than
having default opt cached target optabs, non-default opt with default
target optabs cached too, but for non-default target non-default opt we
don't cache anything and always recompute.
Or perhaps just merge both TARGET_OPTION_NODE and OPTIMIZATION_NODE
into one and let both target and optimize attributes adjust it?
Jakub
