[Bug tree-optimization/83022] [12/13/14/15 Regression] malloc & memset -> calloc is not always an optimization

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83022

--- Comment #12 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 61041
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61041&action=edit
Testcases for probability

In the case of dontcombine and maybecombine we should not do the combine of
memset/malloc to calloc. docombine we should.