[llvm] [ARM] Add mayRaiseFPException to appropriate instructions and mark all instructions that read/write fpscr rounding bits as doing so (PR #160698)

[David Green via llvm-commits]

https://github.com/davemgreen commented:

Thanks - I looked through again, do we need to add these too?
```
VJCVT
VRINTAD
VRINTAH
VRINTAS
VRINTMD
VRINTMH
VRINTMS
VRINTND
VRINTNH
VRINTNS
VRINTPD
VRINTPH
VRINTPS
VRINTRD
VRINTRH
VRINTRS
VRINTZD
VRINTZH
VRINTZS
VSHTOD
VSHTOH
VSHTOS
VSITOD
VSITOH
VSITOS
VSLTOD
VSLTOH
VSLTOS
VUHTOD
VUHTOH
VUHTOS
VUITOD
VUITOH
VUITOS
VULTOD
VULTOH
VULTOS
```
Otherwise this looks OK to me.

https://github.com/llvm/llvm-project/pull/160698