When compiling from assembly, the bcopy instruction either cannot be parsed or is parsed incorrectly.

Scenario 1:
If the instruction is written correctly, e.g. bcopy $26 = $25, 0, $p1, then compilation using patmos-clang throws the error:

error: too few operands for instruction
                         bcopy  $r26 = $r25, 0, $p1

Scenario 2:
If we add a comma to the end of the operand list, e.g. bcopy $26 = $25, 0, $p1, then compilation won't fail, but the instruction is not output to the final object file. I.e. its is just ignored.

Both scenarios also manifest in inline assembly, e.g:

int main(){
  asm(
    "bcopy  $r26 = $r25, 0, $p1"
  );
}