[Bug tree-optimization/57512] Vectorizer: cannot handle accumulation loop of signed char type

[bmei at broadcom dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57512

--- Comment #1 from Bingfeng Mei <bmei at broadcom dot com> ---
Created attachment 30250
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30250&action=edit
Vectorized assembly code with unsigned char type