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

[pa...@matos-sorge.com]

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

--- Comment #9 from Paulo J. Matos <pa...@matos-sorge.com> ---
Created attachment 32044
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32044&action=edit
Testcase