[Bug tree-optimization/87900] malloc + memset to calloc doesn't work for aggregate initialization

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87900

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 61039
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61039&action=edit
Patch which needs full testing, some more comments and testcases

This works for the 2 testcases listed in this bug report.