0x00 0x64 0x10 0xdd # CHECK: dmuhu $2, $3, $4
0x00 0x64 0x10 0x9c # CHECK: dmul $2, $3, $4
0x00 0x64 0x10 0x9d # CHECK: dmulu $2, $3, $4
+0x00 0x03 0x10 0x2e # CHECK: dneg $2, $3
+0x00 0x03 0x10 0x2f # CHECK: dnegu $2, $3
0x41 0x60 0x60 0x20 # CHECK: ei
0x41 0x6e 0x60 0x20 # CHECK: ei $14
0x00 0x80 0xfc 0x09 # CHECK: jalr.hb $4