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

[i at maskray dot me via Gcc-bugs]

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

--- Comment #17 from Fangrui Song <i at maskray dot me> ---
I hope that we just remove this malloc+memset => calloc transformation. Even in
the malloc-dom-memset and memset-postdom-malloc case, calloc might not be an
optimization. It is not worth the extra code complexity.


https://reviews.llvm.org/D103009#2957843