[llvm] [DAG] visitFREEZE - always allow freezing multiple operands (PR #145939)

[Jordan Rupprecht via llvm-commits]

rupprecht wrote:

> Sure - to save me time please can you create a llc-only repro?

The provided repro also crashes via `llc -relocation-model=pic -code-model=medium < repro.ll`

https://godbolt.org/z/aMso1cqME

The full debug info may not be necessary to crash, but I couldn't figure out how to reduce that further. The `%load` line also appears not to be necessary.

https://github.com/llvm/llvm-project/pull/145939