error: unrecognized platform-specific intrinsic function: `simd_shuffle2` etc. with nightly

[KonradHoeffner]

With rustc 1.73.0-nightly (f3623871c 2023-08-06), using rsdict causes the following errors:

If one has the rsdict repository checked out:

$ cargo test --features packed_simd
...

or otherwise:

$ cargo new mwe
$ cd mwe
mwe$ cargo add rsdict --features packed_simd
    Updating crates.io index
      Adding rsdict v0.0.6 to dependencies.
             Features:
             + packed_simd
             - afl
             - fuzz
             - simd
    Updating crates.io index
mwe$ cargo check
   Compiling libm v0.1.4
   Compiling packed_simd_2 v0.3.8
    Checking cfg-if v1.0.0
   Compiling rsdict v0.0.6
error: unrecognized platform-specific intrinsic function: `simd_shuffle2`
  --> /home/konrad/.cargo/registry/src/index.crates.io-6f17d22bba15001f/packed_simd_2-0.3.8/src/codegen/llvm.rs:10:5
   |
10 |     pub fn simd_shuffle2<T, U>(x: T, y: T, idx: [u32; 2]) -> U;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unrecognized platform-specific intrinsic function: `simd_shuffle4`
  --> /home/konrad/.cargo/registry/src/index.crates.io-6f17d22bba15001f/packed_simd_2-0.3.8/src/codegen/llvm.rs:11:5
   |
11 |     pub fn simd_shuffle4<T, U>(x: T, y: T, idx: [u32; 4]) -> U;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unrecognized platform-specific intrinsic function: `simd_shuffle8`
  --> /home/konrad/.cargo/registry/src/index.crates.io-6f17d22bba15001f/packed_simd_2-0.3.8/src/codegen/llvm.rs:12:5
   |
12 |     pub fn simd_shuffle8<T, U>(x: T, y: T, idx: [u32; 8]) -> U;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unrecognized platform-specific intrinsic function: `simd_shuffle16`
  --> /home/konrad/.cargo/registry/src/index.crates.io-6f17d22bba15001f/packed_simd_2-0.3.8/src/codegen/llvm.rs:13:5
   |
13 |     pub fn simd_shuffle16<T, U>(x: T, y: T, idx: [u32; 16]) -> U;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unrecognized platform-specific intrinsic function: `simd_shuffle32`
  --> /home/konrad/.cargo/registry/src/index.crates.io-6f17d22bba15001f/packed_simd_2-0.3.8/src/codegen/llvm.rs:14:5
   |
14 |     pub fn simd_shuffle32<T, U>(x: T, y: T, idx: [u32; 32]) -> U;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unrecognized platform-specific intrinsic function: `simd_shuffle64`
  --> /home/konrad/.cargo/registry/src/index.crates.io-6f17d22bba15001f/packed_simd_2-0.3.8/src/codegen/llvm.rs:15:5
   |
15 |     pub fn simd_shuffle64<T, U>(x: T, y: T, idx: [u32; 64]) -> U;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: could not compile `packed_simd_2` (lib) due to 6 previous errors

[sujayakar]

fixed by #8