Scott McMurray 1de2257c3f Add intrinsics::transmute_unchecked
This takes a whole 3 lines in `compiler/` since it lowers to `CastKind::Transmute` in MIR *exactly* the same as the existing `intrinsics::transmute` does, it just doesn't have the fancy checking in `hir_typeck`.

Added to enable experimenting with the request in <https://github.com/rust-lang/rust/pull/106281#issuecomment-1496648190> and because the portable-simd folks might be interested for dependently-sized array-vector conversions.

It also simplifies a couple places in `core`.
2023-04-22 17:22:03 -07:00
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2023-01-17 16:23:22 +01:00
2023-01-17 16:23:22 +01:00