[Bug middle-end/54146] Very slow compile with attribute((flatten))

[stevenb.gcc at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54146

--- Comment #58 from stevenb.gcc at gmail dot com <stevenb.gcc at gmail dot 
com> 2012-08-21 13:56:27 UTC ---
FWIW, I think all patches addressing parts of this bug are candidates
for back-porting to release branches. They are all almost trivial.