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. IRA already has scalability problems, let's not add more of that with LRA. Ciao! Steven
