Is anyone else seeing a long compile time on gcc-c-torture/compile/limits-fnargs.c with -O2 optimization? limits-fnargs.c contains a single call to a function with 10,000 arguments.
There is PR 31850 which talks about compile time on limits-fnargs.c, but this was fixed (at least on IA64, if not for spu-elf) a while back and this new time out problem only affects IA64 when -O2 or higher optimization is used. I tracked the time down to the main loop in coalesce_spill_loops in ira-colors.c. The main IRA pass calls reload which calls ira_sort_regnos_for_alter_reg with n = 28977. This in turn calls coalesce_spill_slots with num = 10061. It is in the main loop of coalesce_spill_slots where I seem to spend a lot of time compiling limits-fnargs.c. Vladimir, is this something you are aware of? Would you like me to submit a Bugzilla report? Steve Ellcey [EMAIL PROTECTED]
