Constant core::arch::aarch64::_TMFAILURE_CNCL

pub const _TMFAILURE_CNCL: u64 = 1 << 16; // 0x0000_0000_0001_0000u64

🔬 This is a nightly-only experimental API. (stdsimd #48556)

This is supported on AArch64 only.

事务执行了 TCANCEL 指令