4e20754629
Allow raw pointers in SIMD types Closes #85915 by loosening the strictness in typechecking and adding a test to guarantee it passes. This still might be too strict, as references currently do pass monomorphization, but my understanding is that they are not guaranteed to be "scalar" in the same way.
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.