Memory format
C*Core
C++def LDW : Mari4<0x8, (outs GR32:$Rz), (ins MEMri:$addr),
"ldw\t$Rz, ($addr)", [(set GR32:$Rz, (load ADDRri:$addr))]>;
C++def MEMri : Operand<i32> {
let PrintMethod = "printMemOperand";
let MIOperandInfo = (ops GR32, i32imm);
}