.*: Assembler messages:
.*: Error: unrecognized opcode `c.mul a0,a1'
.*: Error: unrecognized opcode `c.sext.b a0'
.*: Error: unrecognized opcode `c.sext.h a0'
.*: Error: unrecognized opcode `c.zext.h a0'
.*: Error: unrecognized opcode `c.zext.w a0'
