Implementation notes: riscv64, riscvunleashed000, crypto_dh/kumfp61e2g

Computer: riscvunleashed000
Architecture: riscv64
CPU ID: unknown CPU ID
SUPERCOP version: 20210326
Operation: crypto_dh
Primitive: kumfp61e2g

Compiler output

Implementation: T:v01/var
Security model: timingleaks
Compiler: clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE
divisor_dbl.s: divisor_dbl.s:9:9: error: unrecognized operand modifier
divisor_dbl.s: pushq %rbx
divisor_dbl.s: ^
divisor_dbl.s: divisor_dbl.s:9:9: error: unknown operand
divisor_dbl.s: pushq %rbx
divisor_dbl.s: ^
divisor_dbl.s: divisor_dbl.s:10:9: error: unrecognized operand modifier
divisor_dbl.s: pushq %r12
divisor_dbl.s: ^
divisor_dbl.s: divisor_dbl.s:10:9: error: unknown operand
divisor_dbl.s: pushq %r12
divisor_dbl.s: ^
divisor_dbl.s: divisor_dbl.s:11:9: error: unrecognized operand modifier
divisor_dbl.s: pushq %r13
divisor_dbl.s: ^
divisor_dbl.s: divisor_dbl.s:11:9: error: unknown operand
divisor_dbl.s: pushq %r13
divisor_dbl.s: ^
divisor_dbl.s: divisor_dbl.s:12:9: error: unrecognized operand modifier
divisor_dbl.s: pushq %r14
divisor_dbl.s: ^
divisor_dbl.s: divisor_dbl.s:12:9: error: unknown operand
divisor_dbl.s: pushq %r14
divisor_dbl.s: ^
divisor_dbl.s: divisor_dbl.s:13:9: error: unrecognized operand modifier
divisor_dbl.s: ...

Number of similar (compiler,implementation) pairs: 1, namely:
CompilerImplementations
clang -mcpu=native -O3 -fomit-frame-pointer -fwrapv -Qunused-arguments -fPIC -fPIE T:v01/var