[Bug middle-end/59990] [4.8 regression] incorrect memcpy optimization

[anders.blomdell at control dot lth.se]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59990

--- Comment #20 from anders.blomdell at control dot lth.se ---
Created attachment 34776
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34776&action=edit
Shell-script for testing flag variations