On 7/23/19 3:20 AM, Jan Hubicka wrote: >> Hi. >> >> As we as openSUSE started using -flto, I see it very handy to have >> an option value that will automatically detect number of cores >> that can be used for parallel LTRANS phase. >> >> Thoughts? > Hi, > great you found time to make this. It should become the default for > -flto IMO. I was going to hack it into the rpm configury bits since we have access to the # cores there. But an auto-selector within GCC is even better.
BTW, isn't this all going to wreck havoc with reproducible builds since partitioning can affect code generation? That's one of our open questions... Jeff
