On Sun, Feb 26, 2012 at 1:32 PM, Thomas Koenig <tkoe...@netcologne.de> wrote: > Hello world, > > -floop-flatten breaks Lapack, which uses quite a common technique; see > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52307 > > This is not a regression as far as I can determine, but the bug is > severe enough that I would consider removing the option for the 4.7 > release. > > Opinions?
Why remove it? Just document it is experimental. It's not turned on by default at any optimization level - and it even lacks a cost model, so is not really useful. Richard. > Thomas
