On Sun, Sep 30, 2012 at 6:52 PM, Steven Bosscher <stevenb....@gmail.com> wrote: > Hi, > > > To look at it in yet another way: > >> integrated RA : 189.34 (16%) usr >> LRA non-specific : 59.82 ( 5%) usr >> LRA virtuals eliminatenon: 56.79 ( 5%) usr >> LRA create live ranges : 175.30 (15%) usr >> LRA hard reg assignment : 130.85 (11%) usr > > The IRA pass is slower than the next-slowest pass (tree PRA) by almost > a factor 2.5. Each of the individually-measured *phases* of LRA is > slower than the complete IRA *pass*. These 5 timevars together make up > for 52% of all compile time.
That figure indeed makes IRA + LRA look bad. Did you by chance identify anything obvious that can be done to improve the situation? Thanks, Richard. > IRA already has scalability problems, let's not add more of that with LRA. > > Ciao! > Steven
