[AArch64] Implement FP8 Neon reinterpret intrinsics

[fixup] Remove some opt passes from tests, regenerate tests

Author: momchil-velikov

clang/include/clang/Basic/arm_neon.td

@@ -1304,7 +1304,7 @@ def VQTBX4_A64 : WInst<"vqtbx4", "..(4Q)U", "UccPcQUcQcQPc">;
 // NeonEmitter implicitly takes the cartesian product of the type string with
 // itself during generation so, unlike all other intrinsics, this one should
 // include *all* types, not just additional ones.
-def VVREINTERPRET : REINTERPRET_CROSS_SELF<"csilUcUsUiUlhfdPcPsPlQcQsQiQlQUcQUsQUiQUlQhQfQdQPcQPsQPlQPk"> {
+def VVREINTERPRET : REINTERPRET_CROSS_SELF<"csilUcUsUiUlmhfdPcPsPlQcQsQiQlQUcQUsQUiQUlQmQhQfQdQPcQPsQPlQPk"> {
   let ArchGuard = "defined(__aarch64__) || defined(__arm64ec__)";
   let BigEndianSafe = 1;
 }