Function `permlanex16_u32`

pub unsafe fn permlanex16_u32<const FI: bool, const BOUND_CONTROL: bool>(old: u32, src0: u32, src1: u32, src2: u32) -> u32

Performs arbitrary gather-style operation across two rows (16 contiguous lanes) of the second input operand.

The third and fourth inputs must be uniform across the current wavefront. These are combined into a single 64-bit value representing lane selects used to swizzle within each row.

This intrinsic does not behave like a normal function call; it is a "convergent" operation and as such has non-standard control-flow effects which need special treatment by the language. Rust currently does not properly support convergent operations. This operation is hence provided on a best-effort basis. Using it may result in incorrect code under some circumstances.