Attribute Macro multiversion::target_clones

#[target_clones]

Provides automatic function multiversioning by compiling clones of the function for each target.

The proper function clone is invoked depending on runtime CPU feature detection. Priority is evaluated left-to-right, selecting the first matching target. If no matching target is found, a clone with no required features is called.

Example

The function square runs with AVX or SSE compiler optimizations when detected on the CPU at runtime.

use multiversion::target_clones;

#[target_clones("[x86|x86_64]+avx", "x86+sse")]
fn square(x: &mut [f32]) {
    for v in x {
        *v *= *v;
    }
}