[Bug rtl-optimization/59999] [4.9 Regression] Sign extension in loop regression blocks generation of zero overhead loop

[paulo@matos-sorge.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59999

--- Comment #6 from Paulo J. Matos <paulo@matos-sorge.com> ---
humm, ree is no good because by then we missed already the generation of zero
overhead loops. Do you think this is something that could be added to expand?