[Bug middle-end/54146] Very slow compile at -O1 (expand vars)

[steven at gcc dot gnu.org]

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

--- Comment #7 from Steven Bosscher <steven at gcc dot gnu.org> 2012-08-01 14:08:01 UTC ---
(In reply to comment #6)
> The inline heuristics stuff is probably also due to stack-vars handling,
> I will look into that.

Turns out this is due to the use of attribute((flatten)) on gebp_kernel.