.extInstruction insn1, 7, 0x21, SUFFIX_NONE, SYNTAX_3OP
.extInstruction insn2, 7, 0x21, SUFFIX_NONE, SYNTAX_2OP
.extInstruction insn3, 7, 0x21, SUFFIX_NONE, SYNTAX_1OP
.extInstruction insn4, 7, 0x21, SUFFIX_NONE, SYNTAX_NOP
start:
insn1 r0,r1,r2
insn2 r0,r1
insn3 r1
insn4