On Fri, Jun 21, 2013 at 11:21 PM, Steve Ellcey <sell...@mips.com> wrote: > On Fri, 2013-06-21 at 17:43 +0100, James Greenhalgh wrote: > >> So to my mind, this is all far too tied up in pass ordering details to >> resolve. Given that all the threading opportunities for my patch are found >> in dom1 and how fragile the positioning of dom1 is, there is not a great >> deal I can do to modify the ordering. >> >> The biggest improvement I could find comes from rerunning pass_ch >> immediately after dom1, though I'm not sure what the cost of that >> would be. >> >> I wonder if you or others have any thoughts on what the right thing to >> do would be? >> >> > I am not sure if path threading in general is turned off for -Os but it >> > probably should be. >> >> I agree, jump threading is on at -Os, path threading should not be. >> >> Thanks, >> James > > I think that since it seems to be more a space issue then a time issue, > the way you currently have it is reasonable. As long as the > optimization does not happen at -Os then I think we can probably live > with the space increase.
I suppose with Jeffs recent work on jump-threading through paths this case in handled and the patch in this thread is obsolete or can be reworked? Thanks, Richard. > Steve Ellcey > sell...@mips.com > >
