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

[Andrew Adams via llvm-commits]

abadams wrote:

Digging deeper, this commit increased the size of the TargetLoweringBase class to 1.5 MB, because the size of that class is quadratic in MVT::VALUETYPE_SIZE, and this commit increased that from 256 to 504.

If this is intentional, perhaps the true issue here is that this shouldn't be stack-allocated in ARMAsmPrinter. Moving the ARMSubtarget from the stack to the heap does fix things. But I'm not sure if it was intentional for this commit to increase the size of that class by so much.

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