Constant core::arch::x86_64::_XCR_XFEATURE_ENABLED_MASK

pub const _XCR_XFEATURE_ENABLED_MASK: u32 = 0;

This is supported on (non-crate feature miri-test-libstd or test or doctest) and x86-64 only.

XFEATURE_ENABLED_MASK for XCR

This intrinsic maps to XSETBV instruction.