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sub_lo_byte
2019 Mar 25
2
Overlapping register groups in old 8-bit MC6809 processor.
...t;
}
class MC6809RegWithSubregs<bits<4> num, string n, list<Register> subregs, list<string> alt = []>
: RegisterWithSubRegs<n, subregs> {
field bits<4> Num = num;
let Namespace = "MC6809";
let HWEncoding{3-0} = num;
let AltNames = alt;
}
def sub_lo_byte : SubRegIndex<8, 8>;
def sub_hi_byte : SubRegIndex<8>;
def sub_lo_word : SubRegIndex<16, 16>;
def sub_hi_word : SubRegIndex<16>;
//===----------------------------------------------------------------------===//
// Registers
//===-------------------------------------------...