[llvm] [TableGen, CodeGen, CHERI] Add support for the cPTR wildcard value type. (PR #158426)

[Andrew Adams via llvm-commits]

abadams wrote:

There was no one time. The stack usage of this function has just steadily crept upwards over time. It was already using 180k back in 2021 and that's as far back as I can easily build.

https://github.com/llvm/llvm-project/pull/158426