Earlier quoted context omitted.
> We know Google has its own CPU made from scratch, now new OS... CPU from scratch? Are you referring to the LLVM backend for a "new" lanai ISA that they contributed recently? That wasn't designed by Google (but an existing networking equipment manufacturer) and it wasn't a general purpose CPU (integer only, no hardware dividers, made for running a TCP/IP stack and not much else). This new kernel/OS is a bit more int…
Yes, I'm referring to what was described in this thread https://news.ycombinator.com/item?id=11072085
That's not something that's intended for consumer hardware, it's a special purpose CPU used in high-end networking hardware. It's been around for a while, the only real news in that was the upstreaming of the LLVM backend code. It did cause some unwarranted rumors, though.
A quick peek at the actual code reveals that it's not a general purpose CPU. A few web searches will tell that it's a custom CPU used in Myricom's LANAI networking products. There's a much older GCC backend and other compiler tools for it available too.