On 3/8/19 1:44 PM, Jan Hubicka wrote: >> Hi. >> >> Thanks to Intel guys, we've done some re-measurement in PR86952 >> about usage of jump tables when retpolines are used. >> Numbers prove that disabling of JT should be the best for now. >> >> Patch can bootstrap on x86_64-linux-gnu and survives regression tests. >> >> Ready to be installed? > > OK, thanks! > I wonder if there is some threshold for extremely large jumptables where > branchy sequence will loose, but I think it is better to disable them > than what we have right now.
I tested switch statements up to 4096 and it was still slower ;) Martin > > Honza >
