[Bug rtl-optimization/65247] [missed optimisation] Reading a callee-saved register writes to the stack

[adam at consulting dot net.nz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65247

--- Comment #1 from Adam Warner <adam at consulting dot net.nz> ---
CLANG bug report:
<http://llvm.org/bugs/show_bug.cgi?id=22735>