[clang] [llvm] [RISCV] Add Svrsw60t59b extension (PR #132321)

[Jessica Clarke via llvm-commits]

jrtc27 wrote:

> @topperc sorry for the late reply. I've just fixed all the errors, could you take a look?
> 
> (The old spec link is dead, now svrsw60t59b is a part of iommu [riscv-non-isa/riscv-iommu#605](https://github.com/riscv-non-isa/riscv-iommu/pull/605))

Huh? That's not the ISA spec, that's the IOMMU spec, it's not relevant. https://github.com/riscv/riscv-isa-manual/pull/2241 is the change that added Svrsw60t59b to the ISA spec.

https://github.com/llvm/llvm-project/pull/132321