Macro std::llvm_asm

macro_rules! llvm_asm {
    ("assembly template"
                        : $("output"(operand),)*
                        : $("input"(operand),)*
                        : $("clobbers",)*
                        : $("options",)*) => { ... };
}

🔬 This is a nightly-only experimental API. (llvm_asm #70173)

prefer using the new asm! syntax instead

LLVM-style inline assembly.

Read the unstable book for the usage.