[llvm] [LangRef] Cap maximum value of vscale at 2^31-1. (PR #144607)

[Eli Friedman via llvm-commits]

efriedma-quic wrote:

> runtime VF vscale x V generated by LoopVectorize won't wrap when using i64 index types

What about 32-bit targets?

(Not that I'm objecting to this... you'd need to be doing something really unusual with your target to end up with vscales above 1000.)

https://github.com/llvm/llvm-project/pull/144607