Ok. For future cleanup, It will be better to define a new helper function is_profile_missing_p (cfun) -- which checks entry count for instrumentation based FDO, and something else for autofdo.
David On Fri, Jan 24, 2014 at 9:28 PM, Dehao Chen <de...@google.com> wrote: > This patch fixes performance regression for AutoFDO. When the entry > block count is 0, which is quite possible in AutoFDO, it can still > make right optimization decision. > > Bootstrapped passed regression test and performance test (improve 0.5% > on average). > > OK for google-4_8? > > Thanks, > Dehao
