On Sat, 5 Feb 2022, Eric Botcazou wrote: > > In the past stack sharing has been quite important for the linux > > kernel. So perhaps one of the tests we should do if we wanted to go > > forward in this cycle would be to test kernel builds to see if any start > > tripping over the stack space diagnostics they've put in place over the > > years. > > Stack slot sharing is important generally speaking, not just for the kernel. > As demonstrated by the recent controversy about the 1/X optimization, last- > minute broad changes made during stage #4 are generally not a good idea, and > I'm not sure what the incentive for fixing PR middle-end/90348 now is (it's > labeled a 9/10/11/12 regression). At a minimum, I think that a switch to > revert to the pre-12 behavior would be in order if the patch goes in now.
I don't think an option to go to pre-12 behavior is useful. I'll postpone the series to stage1. Richard.
