On Sun, Jun 3, 2012 at 6:10 AM, Nathan Sidwell <nat...@acm.org> wrote: > On 06/03/12 05:51, Xinliang David Li wrote: >> >> On Fri, Dec 30, 2011 at 10:25 AM, Nathan Sidwell<nat...@acm.org> wrote: >>> >>> I've committed this patch to fix and improve coverage reporting: >>> >>> 1) the time stamp local_tick will be -1 if the user overrides the random >>> seed. In such cases the gcov data file should be deleted, just as it >>> would >>> if the time cannot be determined. >> >> >> The end result is that after a the profile data is used in the >> compilation (with option -fprofile-use -frandom-seed=), it is then >> deleted. Is this intended? This basically makes FDO very hard to use >> when -frandom-seed is used. > > > IIUC the file is deleted after being used. What is the problem you are > encountering? (if you are having a problem, that suggests others on systems > without local_tick are also having problems)
Basically it makes it very difficult to rebuild the file with the profile data --- which makes problem triaging impossible. What is worse is that when profile data is missing, gcc silently takes it which gives you no clue you chasing in a completely different path .. David > > nathan
