[libc-commits] [libc] [libc] abs is a const function (PR #79650)

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AtariDreams wrote:

> @michaelrj-google Do we have a formalized way to specify attributes? My gut says it should go in `libc/spec/stdc.td` but I remember hearing there was some desire to move away from tablegen?

I have no idea how to do it in tablegen

https://github.com/llvm/llvm-project/pull/79650