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. Steve Ellcey sell...@mips.com
