[Bug rtl-optimization/46235] inefficient bittest code generation

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46235

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-10-30 
18:21:48 UTC ---
We canonicalize a & (1 << x) to (a >> x) & 1 very early.