Macro std::is_powerpc_feature_detected

macro_rules! is_powerpc_feature_detected {
    ("altivec") => { ... };
    ("vsx") => { ... };
    ("power8") => { ... };
    ($t : tt,) => { ... };
    ($t : tt) => { ... };
}

🔬 This is a nightly-only experimental API. (stdsimd #27731)

This is supported on PowerPC only.

Checks if powerpc feature is enabled.