Macro rvv_asm

rvv_asm!() { /* proc-macro */ }

Convert RISC-V Vector Extension to .byte 0x00, 0x11, 0xaa, 0xbb format asm instructions.

NOTE:

Since currently don’t find a way to tell llvm don’t reorder instructions, please make sure all rvv_asm! macros not inlined, the typical way is putting all rvv_asm! in #[inline(never)] function.

Example:

Compile will fail due to target not supported on develop/CI machine.

let lo: i64;
unsafe {
    rvv_asm::rvv_asm!(
        "vsetvl x5, s3, t6",
        "1: vle256.v v3, (a0), vm",
        "2:",
        "li {lo}, 4",
        lo = out(reg) lo,
    );
}